Merge branch 'master' of https://github.com/pret/pokeemerald into intro

35 files changed, 5707 insertions, 153 deletions

diff --git a/src/battle_script_commands.c b/src/battle_script_commands.c
index 75f05e86f..2da48de49 100644
--- a/src/battle_script_commands.c
+++ b/src/battle_script_commands.c
@@ -76,7 +76,7 @@ extern bool8 sub_81B1250(void); // ?
 extern bool8 InBattlePike(void);
 extern bool8 InBattlePyramid(void);
 extern u16 GetBattlePyramidPickupItemId(void);
-extern u8 sav1_map_get_light_level(void);
+extern u8 Overworld_GetMapTypeOfSaveblockLocation(void);
 extern u8 sub_813B21C(void);
 extern u16 get_unknown_box_id(void);
 
@@ -10578,7 +10578,7 @@ static void atkEF_handleballthrow(void)
                     ballMultiplier = 10;
                 break;
             case ITEM_DIVE_BALL:
-                if (sav1_map_get_light_level() == 5)
+                if (Overworld_GetMapTypeOfSaveblockLocation() == 5)
                     ballMultiplier = 35;
                 else
                     ballMultiplier = 10;
diff --git a/src/battle_setup.c b/src/battle_setup.c
index fdf6e77b6..5b2bf4d98 100644
--- a/src/battle_setup.c
+++ b/src/battle_setup.c
@@ -49,6 +49,8 @@ struct TrainerBattleParameter
     u8 ptrType;
 };
 
+extern void (*gFieldCallback)(void);
+
 extern bool8 InBattlePyramid(void);
 extern bool8 InBattlePike(void);
 extern bool32 InTrainerHill(void);
@@ -472,7 +474,7 @@ void StartWallyTutorialBattle(void)
 {
     CreateMaleMon(&gEnemyParty[0], SPECIES_RALTS, 5);
     ScriptContext2_Enable();
-    gMain.savedCallback = c2_exit_to_overworld_1_continue_scripts_restart_music;
+    gMain.savedCallback = CB2_ReturnToFieldContinueScript;
     gBattleTypeFlags = BATTLE_TYPE_WALLY_TUTORIAL;
     CreateBattleStartTask(B_TRANSITION_SLICE, 0);
 }
@@ -601,7 +603,7 @@ static void CB2_EndWildBattle(void)
     }
     else
     {
-        SetMainCallback2(c2_exit_to_overworld_2_switch);
+        SetMainCallback2(CB2_ReturnToField);
         gFieldCallback = sub_80AF6F0;
     }
 }
@@ -614,13 +616,13 @@ static void CB2_EndScriptedWildBattle(void)
     if (IsPlayerDefeated(gBattleOutcome) == TRUE)
     {
         if (InBattlePyramid())
-            SetMainCallback2(c2_exit_to_overworld_1_continue_scripts_restart_music);
+            SetMainCallback2(CB2_ReturnToFieldContinueScript);
         else
             SetMainCallback2(CB2_WhiteOut);
     }
     else
     {
-        SetMainCallback2(c2_exit_to_overworld_1_continue_scripts_restart_music);
+        SetMainCallback2(CB2_ReturnToFieldContinueScript);
     }
 }
 
@@ -937,7 +939,7 @@ static void CB2_StartFirstBattle(void)
 static void CB2_EndFirstBattle(void)
 {
     Overworld_ClearSavedMusic();
-    SetMainCallback2(c2_exit_to_overworld_1_continue_scripts_restart_music);
+    SetMainCallback2(CB2_ReturnToFieldContinueScript);
 }
 
 static void sub_80B1218(void)
@@ -1313,18 +1315,18 @@ static void CB2_EndTrainerBattle(void)
 {
     if (gTrainerBattleOpponent_A == SECRET_BASE_OPPONENT)
     {
-        SetMainCallback2(c2_exit_to_overworld_1_continue_scripts_restart_music);
+        SetMainCallback2(CB2_ReturnToFieldContinueScript);
     }
     else if (IsPlayerDefeated(gBattleOutcome) == TRUE)
     {
         if (InBattlePyramid() || sub_81D5C18())
-            SetMainCallback2(c2_exit_to_overworld_1_continue_scripts_restart_music);
+            SetMainCallback2(CB2_ReturnToFieldContinueScript);
         else
             SetMainCallback2(CB2_WhiteOut);
     }
     else
     {
-        SetMainCallback2(c2_exit_to_overworld_1_continue_scripts_restart_music);
+        SetMainCallback2(CB2_ReturnToFieldContinueScript);
         if (!InBattlePyramid() && !sub_81D5C18())
         {
             RegisterTrainerInMatchCall();
@@ -1337,7 +1339,7 @@ static void CB2_EndRematchBattle(void)
 {
     if (gTrainerBattleOpponent_A == SECRET_BASE_OPPONENT)
     {
-        SetMainCallback2(c2_exit_to_overworld_1_continue_scripts_restart_music);
+        SetMainCallback2(CB2_ReturnToFieldContinueScript);
     }
     else if (IsPlayerDefeated(gBattleOutcome) == TRUE)
     {
@@ -1345,7 +1347,7 @@ static void CB2_EndRematchBattle(void)
     }
     else
     {
-        SetMainCallback2(c2_exit_to_overworld_1_continue_scripts_restart_music);
+        SetMainCallback2(CB2_ReturnToFieldContinueScript);
         RegisterTrainerInMatchCall();
         SetBattledTrainersFlags();
         HandleRematchVarsOnBattleEnd();
diff --git a/src/battle_transition.c b/src/battle_transition.c
index e0d208f23..8b9b50140 100644
--- a/src/battle_transition.c
+++ b/src/battle_transition.c
@@ -919,7 +919,7 @@ static void CB2_TestBattleTransition(void)
         if (IsBattleTransitionDone())
         {
             sTestingTransitionState = 0;
-            SetMainCallback2(c2_exit_to_overworld_2_switch);
+            SetMainCallback2(CB2_ReturnToField);
         }
         break;
     }
diff --git a/src/berry_blender.c b/src/berry_blender.c
index 23594ba46..1ac52dd6c 100644
--- a/src/berry_blender.c
+++ b/src/berry_blender.c
@@ -161,7 +161,7 @@ extern void copy_textbox_border_tile_patterns_to_vram(u8, u16, u8);
 extern void sub_81AABF0(void (*callback)(void));
 extern void sub_800B4C0(void);
 extern void ClearLinkCallback(void);
-extern void c2_exit_to_overworld_1_continue_scripts_restart_music(void);
+extern void CB2_ReturnToFieldContinueScript(void);
 extern void sub_8153430(void);
 extern bool8 sub_8153474(void);
 extern void sub_80EECEC(void);
@@ -2692,7 +2692,7 @@ static void CB2_HandlePlayerLinkPlayAgainChoice(void)
         if (gReceivedRemoteLinkPlayers == 0)
         {
             FREE_AND_SET_NULL(sBerryBlenderData);
-            SetMainCallback2(c2_exit_to_overworld_1_continue_scripts_restart_music);
+            SetMainCallback2(CB2_ReturnToFieldContinueScript);
         }
         break;
     }
@@ -2742,7 +2742,7 @@ static void CB2_HandlePlayerPlayAgainChoice(void)
             if (sBerryBlenderData->playAgainState == PLAY_AGAIN_OK)
                 SetMainCallback2(DoBerryBlending);
             else
-                SetMainCallback2(c2_exit_to_overworld_1_continue_scripts_restart_music);
+                SetMainCallback2(CB2_ReturnToFieldContinueScript);
 
             FreeAllWindowBuffers();
             UnsetBgTilemapBuffer(2);
diff --git a/src/birch_pc.c b/src/birch_pc.c
new file mode 100644
index 000000000..0f44824f7
--- /dev/null
+++ b/src/birch_pc.c
@@ -0,0 +1,93 @@
+#include "global.h"
+#include "event_data.h"
+#include "field_message_box.h"
+#include "pokedex.h"
+#include "constants/species.h"
+#include "strings.h"
+
+extern u16 gSpecialVar_0x8004;
+extern u16 gSpecialVar_0x8005;
+extern u16 gSpecialVar_0x8006;
+
+bool16 ScriptGetPokedexInfo(void)
+{
+    if (gSpecialVar_0x8004 == 0) // is national dex not present?
+    {
+        gSpecialVar_0x8005 = GetHoennPokedexCount(0);
+        gSpecialVar_0x8006 = GetHoennPokedexCount(1);
+    }
+    else
+    {
+        gSpecialVar_0x8005 = GetNationalPokedexCount(0);
+        gSpecialVar_0x8006 = GetNationalPokedexCount(1);
+    }
+
+    return IsNationalPokedexEnabled();
+}
+
+// This shows your Hoenn Pokedex rating and not your National Dex.
+const u8 *GetPokedexRatingText(u16 count)
+{
+    if (count < 10)
+        return gBirchDexRatingText_LessThan10;
+    if (count < 20)
+        return gBirchDexRatingText_LessThan20;
+    if (count < 30)
+        return gBirchDexRatingText_LessThan30;
+    if (count < 40)
+        return gBirchDexRatingText_LessThan40;
+    if (count < 50)
+        return gBirchDexRatingText_LessThan50;
+    if (count < 60)
+        return gBirchDexRatingText_LessThan60;
+    if (count < 70)
+        return gBirchDexRatingText_LessThan70;
+    if (count < 80)
+        return gBirchDexRatingText_LessThan80;
+    if (count < 90)
+        return gBirchDexRatingText_LessThan90;
+    if (count < 100)
+        return gBirchDexRatingText_LessThan100;
+    if (count < 110)
+        return gBirchDexRatingText_LessThan110;
+    if (count < 120)
+        return gBirchDexRatingText_LessThan120;
+    if (count < 130)
+        return gBirchDexRatingText_LessThan130;
+    if (count < 140)
+        return gBirchDexRatingText_LessThan140;
+    if (count < 150)
+        return gBirchDexRatingText_LessThan150;
+    if (count < 160)
+        return gBirchDexRatingText_LessThan160;
+    if (count < 170)
+        return gBirchDexRatingText_LessThan170;
+    if (count < 180)
+        return gBirchDexRatingText_LessThan180;
+    if (count < 190)
+        return gBirchDexRatingText_LessThan190;
+    if (count < 200)
+        return gBirchDexRatingText_LessThan200;
+    if (count == 200)
+    {
+        if (GetSetPokedexFlag(SpeciesToNationalPokedexNum(SPECIES_JIRACHI), 1)
+         || GetSetPokedexFlag(SpeciesToNationalPokedexNum(SPECIES_DEOXYS), 1)) // Jirachi or Deoxys is not counted towards the dex completion. If either of these flags are enabled, it means the actual count is less than 200.
+            return gBirchDexRatingText_LessThan200;
+        return gBirchDexRatingText_DexCompleted;
+    }
+    if (count == 201)
+    {
+        if (GetSetPokedexFlag(SpeciesToNationalPokedexNum(SPECIES_JIRACHI), 1)
+         && GetSetPokedexFlag(SpeciesToNationalPokedexNum(SPECIES_DEOXYS), 1)) // If both of these flags are enabled, it means the actual count is less than 200.
+            return gBirchDexRatingText_LessThan200;
+        return gBirchDexRatingText_DexCompleted;
+    }
+    if (count == 202)
+        return gBirchDexRatingText_DexCompleted; // Hoenn dex is considered complete, even though the hoenn dex count is 210.
+    return gBirchDexRatingText_LessThan10;
+}
+
+void ShowPokedexRatingMessage(void)
+{
+    ShowFieldMessage(GetPokedexRatingText(gSpecialVar_0x8004));
+}
diff --git a/src/clock.c b/src/clock.c
index 7cea30166..71c433ed2 100644
--- a/src/clock.c
+++ b/src/clock.c
@@ -83,7 +83,7 @@ static void UpdatePerMinute(struct Time *localTime)
 static void ReturnFromStartWallClock(void)
 {
     InitTimeBasedEvents();
-    SetMainCallback2(c2_exit_to_overworld_1_continue_scripts_restart_music);
+    SetMainCallback2(CB2_ReturnToFieldContinueScript);
 }
 
 void StartWallClock(void)
diff --git a/src/daycare.c b/src/daycare.c
index 89c0a48d8..36e8b208d 100644
--- a/src/daycare.c
+++ b/src/daycare.c
@@ -46,7 +46,7 @@ extern void sub_819746C(u8, bool8);
 extern void NewMenuHelpers_DrawStdWindowFrame(u8, bool8);
 extern void sub_81B9328(void);
 extern void sub_81AF078(u32, bool8, struct ListMenu *);
-extern void c2_exit_to_overworld_2_switch(void);
+extern void CB2_ReturnToField(void);
 
 // this file's functions
 static void ClearDaycareMonMisc(struct DaycareMiscMon *misc);
@@ -1315,5 +1315,5 @@ void ShowDaycareLevelMenu(void)
 void ChooseSendDaycareMon(void)
 {
     sub_81B9328();
-    gMain.savedCallback = c2_exit_to_overworld_2_switch;
+    gMain.savedCallback = CB2_ReturnToField;
 }
diff --git a/src/decoration.c b/src/decoration.c
index 8eb875560..c1b12a4d3 100644
--- a/src/decoration.c
+++ b/src/decoration.c
@@ -38,6 +38,8 @@
 #include "decoration.h"
 #include "graphics.h"
 
+extern void (*gFieldCallback)(void);
+
 // Static type declarations
 
 #define OVERWORLD_PLACE_DECOR_SELECTOR_PAL_TAG 0xbe5
@@ -1682,7 +1684,7 @@ void c1_overworld_prev_quest(u8 taskId)
             sub_812A3C8();
             FreeSpritePaletteByTag(OVERWORLD_PLACE_DECOR_SELECTOR_PAL_TAG);
             gFieldCallback = sub_8128CD4;
-            SetMainCallback2(c2_exit_to_overworld_2_switch);
+            SetMainCallback2(CB2_ReturnToField);
             DestroyTask(taskId);
             break;
     }
@@ -2673,7 +2675,7 @@ void sub_812A25C(u8 taskId)
         case 1:
             sub_812A3C8();
             gFieldCallback = sub_812A334;
-            SetMainCallback2(c2_exit_to_overworld_2_switch);
+            SetMainCallback2(CB2_ReturnToField);
             DestroyTask(taskId);
             break;
     }
diff --git a/src/egg_hatch.c b/src/egg_hatch.c
index b78b9433e..e64a98ab1 100644
--- a/src/egg_hatch.c
+++ b/src/egg_hatch.c
@@ -63,7 +63,7 @@ extern void FadeScreen(u8, u8);
 extern void overworld_free_bg_tilemaps(void);
 extern void sub_80AF168(void);
 extern void ScanlineEffect_Stop(void);
-extern void c2_exit_to_overworld_2_switch(void);
+extern void CB2_ReturnToField(void);
 extern void play_some_sound(void);
 extern void DoNamingScreen(u8, const u8*, u16, u8, u32, MainCallback);
 extern u16 sub_80D22D0(void);
@@ -564,7 +564,7 @@ static void EggHatchSetMonNickname(void)
     SetMonData(&gPlayerParty[gSpecialVar_0x8004], MON_DATA_NICKNAME, gStringVar3);
     FreeMonSpritesGfx();
     Free(sEggHatchData);
-    SetMainCallback2(c2_exit_to_overworld_2_switch);
+    SetMainCallback2(CB2_ReturnToField);
 }
 
 static void Task_EggHatchPlayBGM(u8 taskID)
@@ -688,7 +688,7 @@ static void CB2_EggHatch_1(void)
             UnsetBgTilemapBuffer(0);
             UnsetBgTilemapBuffer(1);
             Free(sEggHatchData);
-            SetMainCallback2(c2_exit_to_overworld_2_switch);
+            SetMainCallback2(CB2_ReturnToField);
         }
         break;
     }
diff --git a/src/field_map_obj.c b/src/field_map_obj.c
index 906eff4b7..a5be62442 100644
--- a/src/field_map_obj.c
+++ b/src/field_map_obj.c
@@ -198,7 +198,7 @@ static void npcs_clear_ids_and_state(void)
 
 void sub_808D438(void)
 {
-    strange_npc_table_clear();
+    ZeroAllLinkPlayerMapObjects();
     npcs_clear_ids_and_state();
     ClearPlayerAvatarInfo();
     sub_808D450();
@@ -1673,7 +1673,7 @@ struct MapObjectTemplate *GetFieldObjectTemplateByLocalIdAndMap(u8 localId, u8 m
     }
     else
     {
-        mapHeader = get_mapheader_by_bank_and_number(mapGroup, mapNum);
+        mapHeader = Overworld_GetMapHeaderByGroupAndId(mapGroup, mapNum);
         templates = mapHeader->events->mapObjects;
         count = mapHeader->events->mapObjectCount;
     }
diff --git a/src/fldeff_softboiled.c b/src/fldeff_softboiled.c
new file mode 100644
index 000000000..b61cf9f32
--- /dev/null
+++ b/src/fldeff_softboiled.c
@@ -0,0 +1,109 @@
+#include "global.h"
+#include "menu.h"
+#include "party_menu.h"
+#include "pokemon.h"
+#include "constants/songs.h"
+#include "sound.h"
+#include "sprite.h"
+#include "string_util.h"
+#include "strings.h"
+#include "task.h"
+
+void sub_816166C(u8 taskId);
+void sub_81617B8(u8 taskId);
+void sub_81616C0(u8 taskId);
+void sub_8161724(u8 taskId);
+
+bool8 SetUpFieldMove_SoftBoiled(void)
+{
+    u16 maxHp;
+    u16 hp;
+    u16 minHp;
+
+    maxHp = GetMonData(&gPlayerParty[GetCursorSelectionMonId()], MON_DATA_MAX_HP);
+    hp = GetMonData(&gPlayerParty[GetCursorSelectionMonId()], MON_DATA_HP);
+
+    minHp = (maxHp / 5);
+    if (hp > minHp)
+        return TRUE;
+    return FALSE;
+}
+
+void sub_8161560(u8 taskId)
+{
+    gUnknown_0203CEC8.unkB = 0xA;
+    gUnknown_0203CEC8.unkA =  gUnknown_0203CEC8.unk9;
+    sub_81B0FCC(GetCursorSelectionMonId(), 0x1);
+    display_pokemon_menu_message(0x5);
+    gTasks[taskId].func = sub_81B1370;
+}
+
+void sub_81615A8(u8 taskId)
+{
+    u16 hp;
+
+    u8 unk9 = gUnknown_0203CEC8.unk9;
+    u8 pokemonIndex = gUnknown_0203CEC8.unkA;
+    if(pokemonIndex > 6)
+    {
+        gUnknown_0203CEC8.unkB = 0;
+        display_pokemon_menu_message(0x0);
+        gTasks[taskId].func = sub_81B1370;
+        return;
+    }
+
+    hp = GetMonData(&gPlayerParty[pokemonIndex], MON_DATA_HP);
+    if(hp == 0 || unk9 == pokemonIndex || GetMonData(&gPlayerParty[pokemonIndex], MON_DATA_MAX_HP) == hp)
+    {
+        sub_81617B8(taskId);
+        return;
+    }
+
+    PlaySE(SE_KAIFUKU);
+    sub_81B1F18(taskId, unk9, -1, GetMonData(&gPlayerParty[unk9], MON_DATA_MAX_HP)/5, sub_816166C);
+}
+
+void sub_816166C(u8 taskId)
+{
+    PlaySE(SE_KAIFUKU);
+    sub_81B1F18(taskId, gUnknown_0203CEC8.unkA, 1, GetMonData(&gPlayerParty[gUnknown_0203CEC8.unk9], MON_DATA_MAX_HP)/5, sub_81616C0);
+}
+
+void sub_81616C0(u8 taskId)
+{
+    GetMonNickname(&gPlayerParty[gUnknown_0203CEC8.unkA], gStringVar1);
+    StringExpandPlaceholders(gStringVar4, gText_PkmnHPRestoredByVar2);
+    sub_81B1B5C(gStringVar4, 0);
+    schedule_bg_copy_tilemap_to_vram(2);
+    gTasks[taskId].func = sub_8161724;
+}
+
+void sub_8161724(u8 taskId)
+{
+    if(sub_81B1BD4() == 1)
+        return;
+    gUnknown_0203CEC8.unkB = 0x0;
+    sub_81B0FCC(gUnknown_0203CEC8.unk9, 0);
+    gUnknown_0203CEC8.unk9 = gUnknown_0203CEC8.unkA;
+    sub_81B0FCC(gUnknown_0203CEC8.unkA, 1);
+    sub_8198070(0x6, FALSE);
+    ClearWindowTilemap(0x6);
+    display_pokemon_menu_message(0);
+    gTasks[taskId].func = sub_81B1370;
+}
+
+void sub_8161784(u8 taskId)
+{
+    if(sub_81B1BD4() == 1)
+        return;
+    display_pokemon_menu_message(0x5);
+    gTasks[taskId].func = sub_81B1370;
+}
+
+void sub_81617B8(u8 taskId)
+{
+    PlaySE(SE_SELECT);
+    sub_81B1B5C(&gText_CantBeUsedOnPkmn, 0);
+    schedule_bg_copy_tilemap_to_vram(2);
+    gTasks[taskId].func = sub_8161784;
+}
diff --git a/src/fldeff_strength.c b/src/fldeff_strength.c
new file mode 100644
index 000000000..c1965d983
--- /dev/null
+++ b/src/fldeff_strength.c
@@ -0,0 +1,44 @@
+#include "global.h"
+#include "event_data.h"
+#include "event_scripts.h"
+#include "field_effect.h"
+#include "party_menu.h"
+#include "rom6.h"
+#include "script.h"
+#include "task.h"
+
+void FldEff_UseStrength(void);
+void sub_8145E74(void);
+
+bool8 SetUpFieldMove_Strength(void)
+{
+    if (npc_before_player_of_type(87) == TRUE)
+    {
+        gSpecialVar_Result = GetCursorSelectionMonId();
+        gUnknown_03005DB0 = FieldCallback_Teleport;
+        gUnknown_0203CEEC = FldEff_UseStrength;
+        return TRUE;
+    }
+    return FALSE;
+}
+
+void FldEff_UseStrength(void)
+{
+    gFieldEffectArguments[0] = GetCursorSelectionMonId();
+    ScriptContext1_SetupScript(FieryPath_EventScript_2908FD);
+}
+
+bool8 sub_8145E2C(void)
+{
+    u8 taskId = oei_task_add();
+    gTasks[taskId].data[8] = (u32)sub_8145E74 >> 16;
+    gTasks[taskId].data[9] = (u32)sub_8145E74;
+    GetMonNickname(&gPlayerParty[gFieldEffectArguments[0]], gStringVar1);
+    return FALSE;
+}
+
+void sub_8145E74(void)
+{
+    FieldEffectActiveListRemove(FLDEFF_USE_STRENGTH);
+    EnableBothScriptContexts();
+}
diff --git a/src/fldeff_sweetscent.c b/src/fldeff_sweetscent.c
new file mode 100644
index 000000000..3dfcd640d
--- /dev/null
+++ b/src/fldeff_sweetscent.c
@@ -0,0 +1,97 @@
+#include "global.h"
+#include "constants/rgb.h"
+#include "constants/songs.h"
+#include "event_data.h"
+#include "event_scripts.h"
+#include "field_effect.h"
+#include "field_player_avatar.h"
+#include "field_screen.h"
+#include "fldeff_groundshake.h"
+#include "palette.h"
+#include "party_menu.h"
+#include "rom6.h"
+#include "script.h"
+#include "sound.h"
+#include "sprite.h"
+#include "task.h"
+#include "wild_encounter.h"
+
+void hm2_sweet_scent(void);
+void sub_8159F5C(void);
+void sub_8159FEC(u8 taskId);
+void sub_815A090(u8 taskId);
+
+bool8 SetUpFieldMove_SweetScent(void)
+{
+    gUnknown_03005DB0 = FieldCallback_Teleport;
+    gUnknown_0203CEEC = hm2_sweet_scent;
+    return TRUE;
+}
+
+void hm2_sweet_scent(void)
+{
+    FieldEffectStart(FLDEFF_SWEET_SCENT);
+    gFieldEffectArguments[0] = GetCursorSelectionMonId();
+}
+
+bool8 FldEff_SweetScent()
+{
+    u8 taskId;
+
+    sub_80AC3D0();
+    taskId = oei_task_add();
+    gTasks[taskId].data[8] = (u32)sub_8159F5C >> 16;
+    gTasks[taskId].data[9] = (u32)sub_8159F5C;
+    return FALSE;
+}
+
+void sub_8159F5C(void)
+{
+    u8 taskId;
+
+    PlaySE(SE_W230);
+    CpuFastSet(gPlttBufferUnfaded, gPaletteDecompressionBuffer, 0x100);
+    CpuFastSet(gPlttBufferFaded, gPlttBufferUnfaded, 0x100);
+    BeginNormalPaletteFade(~(1 << (gSprites[GetPlayerAvatarObjectId()].oam.paletteNum + 16)), 4, 0, 8, RGB_RED);
+    taskId = CreateTask(sub_8159FEC, 0);
+    gTasks[taskId].data[0] = 0;
+    FieldEffectActiveListRemove(FLDEFF_SWEET_SCENT);
+}
+
+void sub_8159FEC(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        sub_81BE72C();
+        BlendPalettes(0x00000040, 8, RGB_RED);
+        if (gTasks[taskId].data[0] == 64)
+        {
+            gTasks[taskId].data[0] = 0;
+            if (SweetScentWildEncounter() == TRUE)
+            {
+                DestroyTask(taskId);
+            }
+            else
+            {
+                gTasks[taskId].func = sub_815A090;
+                BeginNormalPaletteFade(~(1 << (gSprites[GetPlayerAvatarObjectId()].oam.paletteNum + 16)), 4, 8, 0, RGB_RED);
+                sub_81BE6B8();
+            }
+        }
+        else
+        {
+            gTasks[taskId].data[0]++;
+        }
+    }
+}
+
+void sub_815A090(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        CpuFastSet(gPaletteDecompressionBuffer, gPlttBufferUnfaded, 0x100);
+        sub_80AC3E4();
+        ScriptContext1_SetupScript(EventScript_290CAE);
+        DestroyTask(taskId);
+    }
+}
diff --git a/src/fldeff_teleport.c b/src/fldeff_teleport.c
index 5b3492db0..e675ef0a5 100644
--- a/src/fldeff_teleport.c
+++ b/src/fldeff_teleport.c
@@ -7,17 +7,14 @@
 #include "rom6.h"
 #include "task.h"
 
-extern bool8 (*gUnknown_03005DB0)(void);
-extern void (*gUnknown_0203CEEC)(void);
-
 bool8 SetUpFieldMove_Teleport(void)
 {
     if (Overworld_MapTypeAllowsTeleportAndFly(gMapHeader.mapType) == TRUE)
     {
         gUnknown_03005DB0 = FieldCallback_Teleport;
-        gUnknown_0203CEEC = hm_teleport_run_dp02scr;   
+        gUnknown_0203CEEC = hm_teleport_run_dp02scr;
         return TRUE;
-    } 
+    }
     return FALSE;
 }
 
diff --git a/src/hof_pc.c b/src/hof_pc.c
index e772f04e8..e5b6f96f8 100644
--- a/src/hof_pc.c
+++ b/src/hof_pc.c
@@ -25,7 +25,7 @@ void AccessHallOfFamePC(void)
 
 void ReturnFromHallOfFamePC(void)
 {
-    SetMainCallback2(c2_exit_to_overworld_2_switch);
+    SetMainCallback2(CB2_ReturnToField);
     gFieldCallback = ReshowPCMenuAfterHallOfFamePC;
 }
 
diff --git a/src/item_menu.c b/src/item_menu.c
index b14ae403e..e88d1c2d3 100755
--- a/src/item_menu.c
+++ b/src/item_menu.c
@@ -155,19 +155,19 @@ void sub_81AD6FC(u8 taskId);
 // .rodata
 
 const struct BgTemplate gUnknown_08613F90[3] = {
-    {0, 0, 31, 0, 0, 1, 0}, 
-    {1, 0, 30, 0, 0, 0, 0}, 
+    {0, 0, 31, 0, 0, 1, 0},
+    {1, 0, 30, 0, 0, 0, 0},
     {2, 3, 29, 0, 0, 2, 0}
 };
-    
+
 const struct ListMenuTemplate gUnknown_08613F9C = {
     NULL, bag_menu_change_item_callback, sub_81AB520, 0, 0, 0, 0, 8, 0, 1, 1, 0, 3, 0, 0, 0, 7, 0
 };
 
 const struct MenuAction gUnknown_08613FB4[] = {
-    {gMenuText_Use, ItemMenu_UseOutOfBattle}, 
-    {gMenuText_Toss, ItemMenu_Toss}, 
-    {gMenuText_Register, ItemMenu_Register}, 
+    {gMenuText_Use, ItemMenu_UseOutOfBattle},
+    {gMenuText_Toss, ItemMenu_Toss},
+    {gMenuText_Register, ItemMenu_Register},
     {gMenuText_Give, ItemMenu_Give},
     {gText_Cancel2, ItemMenu_Cancel},
     {gMenuText_Use, ItemMenu_UseInBattle},
@@ -214,12 +214,12 @@ const struct YesNoFuncTable gUnknown_08614084 = {BagMenuActuallyToss, BagMenuCan
 
 const struct YesNoFuncTable gUnknown_0861408C = {sub_81AD84C, sub_81AD6FC};
 
-const u16 gUnknown_08614094[] = {0x1C00, 0x110, 0x1064, -1, -1, 0x6F, 0x6F, 0};
+const struct ArrowStruct gUnknown_08614094 = {0, 0x1C, 16, 1, 100, 16, -1, -1, 0x6F, 0x6F, 0};
 
 const u8 gUnknown_086140A4[] = INCBIN_U8("graphics/interface/select_button.4bpp");
 
 const u8 gUnknown_08614164[][3] = {
-    {0, 1, 3}, 
+    {0, 1, 3},
     {0, 1, 4},
     {0, 3, 6},
     {2, 1, 3},
@@ -252,7 +252,7 @@ const struct WindowTemplate gUnknown_086141AC[] = {
 // .text
 
 struct BagStruct {
-    void (*bagCallback)(void); 
+    void (*bagCallback)(void);
     u8 location;
     u8 pocket;
     u8 unk6[2];
@@ -339,7 +339,7 @@ void ResetBagScrollPositions(void)
 
 void CB2_BagMenuFromStartMenu(void)
 {
-    GoToBagMenu(0, 5, sub_8086194);
+    GoToBagMenu(0, 5, CB2_ReturnToFieldWithOpenMenu);
 }
 
 void sub_81AABB0(void)
@@ -630,7 +630,7 @@ void load_bag_item_list_buffers(u8 pocketId)
     u16 i;
     struct BagPocket *pocket = &gBagPockets[pocketId];
     struct ListMenuItem *subBuffer;
-    
+
     if (!gUnknown_0203CE54->unk81B_2)
     {
         for (i = 0; i < gUnknown_0203CE54->unk829[pocketId] - 1; i++)
@@ -903,7 +903,7 @@ u8 sub_81ABB2C(u8 a)
 void DisplayItemMessage(u8 taskId, u8 fontId, const u8 *str, void ( *callback)(u8 taskId))
 {
     s16* data = gTasks[taskId].data;
-    
+
     data[10] = AddItemMessageWindow(4);
     FillWindowPixelBuffer(data[10], 17);
     DisplayMessageAndContinueTask(taskId, data[10], 10, 13, fontId, GetPlayerTextSpeed(), str, callback);
@@ -1056,7 +1056,7 @@ void SwitchBagPocket(u8 taskId, s16 deltaBagPocketId, u16 a3)
     s16* data = gTasks[taskId].data;
     u8 pocketId;
 
-    
+
     data[13] = 0;
     data[12] = 0;
     data[11] = deltaBagPocketId;
@@ -1244,7 +1244,7 @@ _081AC09A:\n\
 void sub_81AC10C(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     if (!sub_81221AC() && !IsWallysBag())
     {
         switch (GetSwitchBagPocketDirection())
@@ -1317,7 +1317,7 @@ bool8 sub_81AC2C0(void)
 void bag_menu_swap_items(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     sub_81AF15C(data[0], 16, 1);
     data[1] = gUnknown_0203CE58.scrollPosition[gUnknown_0203CE58.pocket] + gUnknown_0203CE58.cursorPosition[gUnknown_0203CE58.pocket];
     gUnknown_0203CE54->unk81A = data[1];
@@ -1335,7 +1335,7 @@ void sub_81AC3C0(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
     int r7;
-    
+
     if (sub_81221EC() != TRUE)
     {
         if (gMain.newKeys & SELECT_BUTTON)
@@ -1375,7 +1375,7 @@ void sub_81AC498(u8 taskId)
     u16* scrollPos = &gUnknown_0203CE58.scrollPosition[gUnknown_0203CE58.pocket];
     u16* cursorPos = &gUnknown_0203CE58.cursorPosition[gUnknown_0203CE58.pocket];
     u16 realPos = (*scrollPos + *cursorPos);
-    
+
     if (data[1] == realPos || data[1] == (realPos - 1))
         sub_81AC590(taskId);
     else
@@ -1398,7 +1398,7 @@ void sub_81AC590(u8 taskId)
     s16* data = gTasks[taskId].data;
     u16* scrollPos = &gUnknown_0203CE58.scrollPosition[gUnknown_0203CE58.pocket];
     u16* cursorPos = &gUnknown_0203CE58.cursorPosition[gUnknown_0203CE58.pocket];
-    
+
     gUnknown_0203CE54->unk81A = -1;
     sub_81AE6C8(data[0], scrollPos, cursorPos);
     if (data[1] < (*scrollPos + *cursorPos))
@@ -1689,7 +1689,7 @@ void ItemMenu_UseOutOfBattle(u8 taskId)
 void ItemMenu_Toss(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     bag_menu_remove_some_window();
     data[8] = 1;
     if (data[2] == 1)
@@ -1710,7 +1710,7 @@ void ItemMenu_Toss(u8 taskId)
 void BagMenuConfirmToss(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     CopyItemName(gSpecialVar_ItemId, gStringVar1);
     ConvertIntToDecimalStringN(gStringVar2, data[8], 0, 3);
     StringExpandPlaceholders(gStringVar4, gText_ConfirmTossItems);
@@ -1722,7 +1722,7 @@ void BagMenuConfirmToss(u8 taskId)
 void BagMenuCancelToss(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     bag_menu_print_description_box_text(data[1]);
     bag_menu_print_cursor_(data[0], 0);
     set_callback3_to_bag(taskId);
@@ -1731,7 +1731,7 @@ void BagMenuCancelToss(u8 taskId)
 void Task_ChooseHowManyToToss(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     if (AdjustQuantityAccordingToDPadInput(&data[8], data[2]) == TRUE)
     {
         sub_81ABC54(gUnknown_0203CE54->unk817, data[8]);
@@ -1753,7 +1753,7 @@ void Task_ChooseHowManyToToss(u8 taskId)
 void BagMenuActuallyToss(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     CopyItemName(gSpecialVar_ItemId, gStringVar1);
     ConvertIntToDecimalStringN(gStringVar2, data[8], 0, 3);
     StringExpandPlaceholders(gStringVar4, gText_ThrewAwayVar2Var1s);
@@ -1767,7 +1767,7 @@ void Task_ActuallyToss(u8 taskId)
     s16* data = gTasks[taskId].data;
     u16* scrollPos = &gUnknown_0203CE58.scrollPosition[gUnknown_0203CE58.pocket];
     u16* cursorPos = &gUnknown_0203CE58.cursorPosition[gUnknown_0203CE58.pocket];
-    
+
     if (gMain.newKeys & (A_BUTTON | B_BUTTON))
     {
         PlaySE(SE_SELECT);
@@ -1787,7 +1787,7 @@ void ItemMenu_Register(u8 taskId)
     s16* data = gTasks[taskId].data;
     u16* scrollPos = &gUnknown_0203CE58.scrollPosition[gUnknown_0203CE58.pocket];
     u16* cursorPos = &gUnknown_0203CE58.cursorPosition[gUnknown_0203CE58.pocket];
-    
+
     if (gSaveBlock1Ptr->registeredItem == gSpecialVar_ItemId)
         gSaveBlock1Ptr->registeredItem = 0;
     else
@@ -1852,7 +1852,7 @@ void ItemMenu_CheckTag(u8 taskId)
 void ItemMenu_Cancel(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     bag_menu_remove_some_window();
     bag_menu_print_description_box_text(data[1]);
     schedule_bg_copy_tilemap_to_vram(0);
@@ -1910,7 +1910,7 @@ void item_menu_type_b(u8 taskId)
 bool8 UseRegisteredKeyItemOnField(void)
 {
     u8 taskId;
-    
+
     if (InUnionRoom() == TRUE || InBattlePyramid() || InBattlePike() || InMultiBattleRoom() == TRUE)
         return FALSE;
     HideMapNamePopUpWindow();
@@ -1938,14 +1938,14 @@ bool8 UseRegisteredKeyItemOnField(void)
 void display_sell_item_ask_str(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     if (itemid_get_market_price(gSpecialVar_ItemId) == 0)
     {
         CopyItemName(gSpecialVar_ItemId, gStringVar2);
         StringExpandPlaceholders(gStringVar4, gText_CantBuyKeyItem);
         DisplayItemMessage(taskId, 1, gStringVar4, bag_menu_inits_lists_menu);
     }
-    else 
+    else
     {
         data[8] = 1;
         if (data[2] == 1)
@@ -1965,7 +1965,7 @@ void display_sell_item_ask_str(u8 taskId)
 void sub_81AD680(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     ConvertIntToDecimalStringN(gStringVar1, (itemid_get_market_price(gSpecialVar_ItemId) / 2) * data[8], 0, 6);
     StringExpandPlaceholders(gStringVar4, gText_ICanPayVar1);
     DisplayItemMessage(taskId, 1, gStringVar4, sub_81AD6E4);
@@ -1979,7 +1979,7 @@ void sub_81AD6E4(u8 taskId)
 void sub_81AD6FC(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     bag_menu_remove_money_window();
     bag_menu_RemoveBagItem_message_window(4);
     bag_menu_print_cursor_(data[0], 0);
@@ -1990,7 +1990,7 @@ void sub_81AD730(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
     u8 windowId = bag_menu_add_window(8);
-    
+
     sub_81ABCC0(windowId, 1, (itemid_get_market_price(gSpecialVar_ItemId) / 2) * data[8]);
     bag_menu_AddMoney_window();
     gTasks[taskId].func = sub_81AD794;
@@ -1999,7 +1999,7 @@ void sub_81AD730(u8 taskId)
 void sub_81AD794(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     if (AdjustQuantityAccordingToDPadInput(&data[8], data[2]) == TRUE)
     {
         sub_81ABCC0(gUnknown_0203CE54->unk818, data[8], (itemid_get_market_price(gSpecialVar_ItemId) / 2) * data[8]);
@@ -2024,7 +2024,7 @@ void sub_81AD794(u8 taskId)
 void sub_81AD84C(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     CopyItemName(gSpecialVar_ItemId, gStringVar2);
     ConvertIntToDecimalStringN(gStringVar1, (itemid_get_market_price(gSpecialVar_ItemId) / 2) * data[8], 0, 6);
     StringExpandPlaceholders(gStringVar4, gText_TurnedOverVar1ForVar2);
@@ -2036,7 +2036,7 @@ void sub_81AD8C8(u8 taskId)
     s16* data = gTasks[taskId].data;
     u16* scrollPos = &gUnknown_0203CE58.scrollPosition[gUnknown_0203CE58.pocket];
     u16* cursorPos = &gUnknown_0203CE58.cursorPosition[gUnknown_0203CE58.pocket];
-    
+
     PlaySE(SE_REGI);
     RemoveBagItem(gSpecialVar_ItemId, data[8]);
     AddMoney(&gSaveBlock1Ptr->money, (itemid_get_market_price(gSpecialVar_ItemId) / 2) * data[8]);
@@ -2063,7 +2063,7 @@ void sub_81AD9C0(u8 taskId)
 void display_deposit_item_ask_str(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     data[8] = 1;
     if (data[2] == 1)
     {
@@ -2083,7 +2083,7 @@ void display_deposit_item_ask_str(u8 taskId)
 void sub_81ADA7C(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     if (AdjustQuantityAccordingToDPadInput(&data[8], data[2]) == TRUE)
     {
         sub_81ABC54(gUnknown_0203CE54->unk817, data[8]);
@@ -2107,7 +2107,7 @@ void sub_81ADA7C(u8 taskId)
 void sub_81ADB14(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     FillWindowPixelBuffer(1, 0);
     if (itemid_is_unique(gSpecialVar_ItemId))
     {
@@ -2132,7 +2132,7 @@ void sub_81ADB14(u8 taskId)
 void sub_81ADC0C(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     if (gMain.newKeys & (A_BUTTON | B_BUTTON))
     {
         PlaySE(SE_SELECT);
@@ -2152,7 +2152,7 @@ bool8 IsWallysBag(void)
 void PrepareBagForWallyTutorial(void)
 {
     u32 i;
-    
+
     gUnknown_0203CE80 = AllocZeroed(sizeof(struct TempWallyStruct));
     memcpy(gUnknown_0203CE80->bagPocket_Items, gSaveBlock1Ptr->bagPocket_Items, sizeof(gSaveBlock1Ptr->bagPocket_Items));
     memcpy(gUnknown_0203CE80->bagPocket_PokeBalls, gSaveBlock1Ptr->bagPocket_PokeBalls, sizeof(gSaveBlock1Ptr->bagPocket_PokeBalls));
@@ -2170,7 +2170,7 @@ void PrepareBagForWallyTutorial(void)
 void RestoreBagAfterWallyTutorial(void)
 {
     u32 i;
-    
+
     memcpy(gSaveBlock1Ptr->bagPocket_Items, gUnknown_0203CE80->bagPocket_Items, sizeof(gUnknown_0203CE80->bagPocket_Items));
     memcpy(gSaveBlock1Ptr->bagPocket_PokeBalls, gUnknown_0203CE80->bagPocket_PokeBalls, sizeof(gUnknown_0203CE80->bagPocket_PokeBalls));
     gUnknown_0203CE58.pocket = gUnknown_0203CE80->pocket;
@@ -2193,7 +2193,7 @@ void DoWallyTutorialBagMenu(void)
 void Task_WallyTutorialBagMenu(u8 taskId)
 {
     s16* data = gTasks[taskId].data;
-    
+
     if (!gPaletteFade.active)
     {
         switch (data[8])
@@ -2235,7 +2235,7 @@ void unknown_ItemMenu_Show(u8 taskId)
 void bag_menu_leave_maybe_3(void)
 {
     gFieldCallback = sub_819FA50;
-    SetMainCallback2(c2_exit_to_overworld_2_switch);
+    SetMainCallback2(CB2_ReturnToField);
 }
 
 void unknown_ItemMenu_Give2(u8 taskId)
@@ -2249,7 +2249,7 @@ void unknown_ItemMenu_Give2(u8 taskId)
 void bag_menu_leave_maybe_2(void)
 {
     gFieldCallback = sub_818DEF4;
-    SetMainCallback2(c2_exit_to_overworld_2_switch);
+    SetMainCallback2(CB2_ReturnToField);
 }
 
 void unknown_ItemMenu_Confirm2(u8 taskId)
@@ -2262,7 +2262,7 @@ void unknown_ItemMenu_Confirm2(u8 taskId)
 void bag_menu_leave_maybe(void)
 {
     gFieldCallback = sub_818E564;
-    SetMainCallback2(c2_exit_to_overworld_2_switch);
+    SetMainCallback2(CB2_ReturnToField);
 }
 
 void bag_menu_print_pocket_names(u8 *pocketName1, u8 *pocketName2)
@@ -2270,7 +2270,7 @@ void bag_menu_print_pocket_names(u8 *pocketName1, u8 *pocketName2)
     struct WindowTemplate window = {0, 0, 0, 0, 0, 0, 0};
     u16 windowId;
     int offset;
-    
+
     window.width = 16;
     window.height = 2;
     windowId = AddWindow(&window);
@@ -2304,7 +2304,7 @@ void bag_menu_copy_pocket_name_to_window(u32 a)
 void setup_bag_menu_textboxes(void)
 {
     u8 i;
-    
+
     InitWindows(gUnknown_08614174);
     DeactivateAllTextPrinters();
     sub_809882C(0, 1, -32);
@@ -2328,7 +2328,7 @@ void bag_menu_print(u8 a, u8 b, const u8 *str, u8 c, u8 d, u8 e, u8 f, u8 g, u8
 u8 sub_81AE124(u8 a)
 {
     return gUnknown_0203CE54->unk810[a];
-}    
+}
 
 u8 bag_menu_add_window(u8 a)
 {
@@ -2409,7 +2409,7 @@ void PrintTMHMMoveData(u16 itemId)
     u8 i;
     u16 moveId;
     const u8* text;
-    
+
     FillWindowPixelBuffer(4, 0);
     if (itemId == ITEM_NONE)
     {
diff --git a/src/item_use.c b/src/item_use.c
index 2e47e6f14..3b6b286b7 100755
--- a/src/item_use.c
+++ b/src/item_use.c
@@ -1,6 +1,7 @@
 #include "global.h"
 #include "item_use.h"
 #include "battle.h"
+#include "main.h"
 #include "berry.h"
 #include "bike.h"
 #include "coins.h"
@@ -45,7 +46,7 @@ extern void ItemUseOutOfBattle_EvolutionStone(u8 b);
 extern void bag_menu_mail_related(void);
 extern void OpenPokeblockCase(u8 a, void(*b)(void));
 extern void overworld_free_bg_tilemaps(void);
-extern bool32 sav1_map_is_biking_allowed(void);
+extern bool32 Overworld_IsBikingAllowed(void);
 extern bool8 IsPlayerFacingSurfableFishableWater(void);
 extern bool8 sub_81221AC(void);
 extern u8 gText_ItemFinderNothing[];
@@ -85,11 +86,12 @@ extern void sub_81C59BC(void);
 extern void sub_81AB9A8(u8);
 extern void sub_81ABA88(u8);
 extern void sub_80B7CC8(void);
-extern void flagmods_08054D70(void);
+extern void Overworld_ResetStateAfterDigEscRope(void);
 extern u8* sub_806CF78(u16);
 extern void sub_81B89F0(void);
 extern u8 GetItemEffectType(u16);
 extern struct MapConnection *sub_8088A8C(s16, s16);
+extern void (*gFieldCallback)(void);
 
 void MapPostLoadHook_UseItem(void);
 void sub_80AF6D4(void);
@@ -119,7 +121,7 @@ void DisplayItemMessageOnField(u8 taskId, u8* str, void(*callback)(u8 taskId));
 void sub_81C6714(u8 taskId);
 void CleanUpAfterFailingToUseRegisteredKeyItemOnField(u8 taskId);
 void StartFishing(u8 a);
-bool8 ItemfinderCheckForHiddenItems(struct MapEvents *, u8);
+bool8 ItemfinderCheckForHiddenItems(const struct MapEvents *, u8);
 u8 sub_80FD9B0(s16 a, s16 b);
 void sub_80FDA24(u8 a);
 void sub_80FD8E0(u8 taskId, s16 x, s16 y);
@@ -236,7 +238,7 @@ void ItemUseOutOfBattle_Bike(u8 taskId)
         DisplayCannotDismountBikeMessage(taskId, data[3]);
     else
     {
-        if (sav1_map_is_biking_allowed() == TRUE && IsBikingDisallowedByPlayer() == 0)
+        if (Overworld_IsBikingAllowed() == TRUE && IsBikingDisallowedByPlayer() == 0)
         {
             gUnknown_0203A0F4 = ItemUseOnFieldCB_Bike;
             SetUpItemUseOnFieldCallback(taskId);
@@ -363,7 +365,7 @@ void sub_80FD5CC(u8 taskId)
     DestroyTask(taskId);
 }
 
-bool8 ItemfinderCheckForHiddenItems(struct MapEvents *events, u8 taskId)
+bool8 ItemfinderCheckForHiddenItems(const struct MapEvents *events, u8 taskId)
 {
     int distanceX, distanceY;
     s16 x, y, i, newDistanceX, newDistanceY;
@@ -390,7 +392,7 @@ bool8 ItemfinderCheckForHiddenItems(struct MapEvents *events, u8 taskId)
         return FALSE;
 }
 
-bool8 sub_80FD6D4(struct MapEvents *events, s16 x, s16 y)
+bool8 sub_80FD6D4(const struct MapEvents *events, s16 x, s16 y)
 {
     u8 bgEventCount = events->bgEventCount;
     struct BgEvent *bgEvent = events->bgEvents;
@@ -637,7 +639,7 @@ void sub_80FDC00(u8 taskId)
     if (!gPaletteFade.active)
     {
         overworld_free_bg_tilemaps();
-        OpenPokeblockCase(0, c2_exit_to_overworld_2_switch);
+        OpenPokeblockCase(0, CB2_ReturnToField);
         DestroyTask(taskId);
     }
 }
@@ -678,7 +680,7 @@ void sub_80FDD10(u8 taskId)
     {
         gUnknown_0203A0F4 = sub_80FDD74;
         gFieldCallback = MapPostLoadHook_UseItem;
-        *gUnknown_0203CE54 = c2_exit_to_overworld_2_switch;
+        *gUnknown_0203CE54 = CB2_ReturnToField;
         unknown_ItemMenu_Confirm(taskId);
     }
     else
@@ -904,7 +906,7 @@ void task08_080A1C44(u8 taskId)
 
 void re_escape_rope(u8 taskId)
 {
-    flagmods_08054D70();
+    Overworld_ResetStateAfterDigEscRope();
     sub_80FE058();
     gTasks[taskId].data[0] = 0;
     DisplayItemMessageOnField(taskId, gStringVar4, task08_080A1C44);
diff --git a/src/lilycove_lady.c b/src/lilycove_lady.c
index dcdf9b45a..81a10f8a4 100644
--- a/src/lilycove_lady.c
+++ b/src/lilycove_lady.c
@@ -1079,7 +1079,7 @@ void sub_818E914(void)
 
 void sub_818E92C(void)
 {
-    OpenPokeblockCase(3, c2_exit_to_overworld_2_switch);
+    OpenPokeblockCase(3, CB2_ReturnToField);
 }
 
 void sub_818E940(void)
diff --git a/src/link.c b/src/link.c
index 8f7aa71b6..292ffecf2 100644
--- a/src/link.c
+++ b/src/link.c
@@ -28,6 +28,8 @@
 #include "link.h"
 #include "link_rfu.h"
 
+extern u16 gUnknown_03005DA8;
+
 // Static type declarations
 
 struct BlockTransfer
diff --git a/src/link_rfu.c b/src/link_rfu.c
index 186d54fd3..a1917ed24 100644
--- a/src/link_rfu.c
+++ b/src/link_rfu.c
@@ -16,6 +16,8 @@
 #include "rom_8011DC0.h"
 #include "link_rfu.h"
 
+extern u16 gUnknown_03005DA8;
+
 // Static type declarations
 
 // Static RAM declarations
diff --git a/src/load_save.c b/src/load_save.c
index a516c08c2..e3de66bb8 100644
--- a/src/load_save.c
+++ b/src/load_save.c
@@ -133,12 +133,12 @@ void MoveSaveBlocks_ResetHeap(void)
 }
 
 
-u8 sav2_x1_query_bit1(void)
+u32 GetSecretBase2Field_9(void)
 {
     return gSaveBlock2Ptr->specialSaveWarp & 1;
 }
 
-void sav2_x9_clear_bit1(void)
+void ClearSecretBase2Field_9(void)
 {
     gSaveBlock2Ptr->specialSaveWarp &= ~1;
 }
diff --git a/src/main_menu.c b/src/main_menu.c
index 8608159c2..3d6c1df76 100644
--- a/src/main_menu.c
+++ b/src/main_menu.c
@@ -1,15 +1,1977 @@
 
 // Includes
 #include "global.h"
+#include "battle_dome_cards.h"
+#include "bg.h"
+#include "constants/flags.h"
+#include "constants/rgb.h"
+#include "constants/songs.h"
+#include "constants/species.h"
+#include "decompress.h"
+#include "event_data.h"
+#include "field_effect.h"
+#include "gpu_regs.h"
+#include "graphics.h"
+#include "international_string_util.h"
+#include "link.h"
+#include "main.h"
+#include "menu.h"
+#include "menu_indicators.h"
+#include "mystery_event_menu.h"
+#include "naming_screen.h"
+#include "option_menu.h"
+#include "overworld.h"
+#include "palette.h"
+#include "pokeball.h"
+#include "pokedex.h"
+#include "pokemon_3.h"
+#include "random.h"
+#include "rtc.h"
+#include "save.h"
+#include "scanline_effect.h"
+#include "sound.h"
+#include "sprite.h"
+#include "string.h"
+#include "strings.h"
+#include "string_util.h"
+#include "task.h"
+#include "text.h"
+#include "text_window.h"
+#include "title_screen.h"
+#include "window.h"
 
 // Static type declarations
 
 // Static RAM declarations
 
+EWRAM_DATA u8 gUnknown_02022D04 = 0;
+EWRAM_DATA u16 gUnknown_02022D06 = 0;
+
 IWRAM_DATA u8 gUnknown_03000DD0;
 
 // Static ROM declarations
 
+u32 InitMainMenu(bool8);
+void Task_MainMenuCheckSaveFile(u8);
+void Task_MainMenuCheckBattery(u8);
+void Task_WaitForSaveFileErrorWindow(u8);
+void CreateMainMenuErrorWindow(const u8*);
+void sub_8032250(const struct WindowTemplate*);
+void Task_DisplayMainMenu(u8);
+void Task_WaitForBatteryDryErrorWindow(u8);
+void fmt_savegame(void);
+void HighlightSelectedMainMenuItem(u8, u8, s16);
+void Task_HandleMainMenuInput(u8);
+void Task_HandleMainMenuAPressed(u8);
+void Task_HandleMainMenuBPressed(u8);
+void task_new_game_prof_birch_speech_1(u8);
+void Task_DisplayMainMenuInvalidActionError(u8);
+void AddBirchSpeechObjects(u8);
+void task_new_game_prof_birch_speech_2(u8);
+void sub_8031BAC(u8, u8);
+void sub_8031D34(u8, u8);
+void task_new_game_prof_birch_speech_3(u8);
+void unknown_rbox_to_vram(u8, u8);
+void sub_8032318(u8);
+void task_new_game_prof_birch_speech_4(u8);
+void task_new_game_prof_birch_speech_5(u8);
+void sub_80323A0(struct TextSubPrinter *printer, u16 a);
+void task_new_game_prof_birch_speech_6(u8);
+void sub_8030B14(u8);
+void task_new_game_prof_birch_speech_7(u8);
+void sub_8031ACC(u8, u8);
+void sub_8031C88(u8, u8);
+void task_new_game_prof_birch_speech_8(u8);
+void task_new_game_prof_birch_speech_9(u8);
+void task_new_game_prof_birch_speech_10(u8);
+void task_new_game_prof_birch_speech_11(u8);
+void LoadMainMenuWindowFrameTiles(u8, u16);
+void DrawMainMenuWindowBorder(const struct WindowTemplate*, u16);
+void Task_HighlightSelectedMainMenuItem(u8);
+void task_new_game_prof_birch_speech_12(u8);
+void task_new_game_prof_birch_speech_13(u8);
+void sub_8031D74(void);
+s8 sub_8031DB4(void);
+void sub_80322E0(u8, u8);
+void task_new_game_prof_birch_speech_14(u8);
+void sub_8030ED4(u8);
+void sub_8030F7C(u8);
+void task_new_game_prof_birch_speech_15(u8);
+void task_new_game_prof_birch_speech_16(u8);
+void task_new_game_prof_birch_speech_17(u8);
+void new_game_prof_birch_speech_part2_start(void);
+void set_default_player_name(u8);
+void task_new_game_prof_birch_speech_part2_3(u8);
+void task_new_game_prof_birch_speech_part2_4(u8);
+void sub_80323CC(u8, u8, u16, u16, u8, u8);
+void task_new_game_prof_birch_speech_part2_5(u8);
+void task_new_game_prof_birch_speech_part2_6(u8);
+void task_new_game_prof_birch_speech_part2_7(u8);
+void task_new_game_prof_birch_speech_part2_8(u8);
+void task_new_game_prof_birch_speech_part2_9(u8);
+void sub_80318D8(struct Sprite*);
+void task_new_game_prof_birch_speech_part2_10(u8);
+void task_new_game_prof_birch_speech_part2_11(u8);
+void task_new_game_prof_birch_speech_part2_12(u8);
+void nullsub_11();
+void task_new_game_prof_birch_speech_part2_1(u8);
+void fmt_time(void);
+void fmt_pokedex(void);
+void fmt_player(void);
+void fmt_badges(void);
+void sub_8032474(u8, u8, u8, u8, u8, u8);
+
 // .rodata
 
+const u16 gUnknown_082FECFC[][16] = {
+    INCBIN_U16("graphics/birch_speech/bg0.gbapal"),
+    INCBIN_U16("graphics/birch_speech/bg1.gbapal")
+};
+
+const u8 gBirchIntroShadowGfx[] = INCBIN_U8("graphics/birch_speech/shadow.4bpp.lz");
+const u8 gUnknown_082FEEF0[] = INCBIN_U8("graphics/birch_speech/map.bin.lz");
+const u16 gUnknown_082FF018[] = INCBIN_U16("graphics/birch_speech/bg2.gbapal");
+const u16 gUnknown_082FF028[] = {0, 0, 0, 0, 0, 0, 0, 0};
+
+const struct WindowTemplate gUnknown_082FF038[] = {
+    {0, 2, 1, 26, 2, 15, 1},
+    {0, 2, 5, 26, 2, 15, 0x35}
+};
+
+const struct WindowTemplate gUnknown_082FF048[] = {
+    {0, 2, 1, 26, 6, 15, 1},
+    {0, 2, 9, 26, 2, 15, 0x9D},
+    {0, 2, 13, 26, 2, 15, 0xD1},
+    {0, 2, 17, 26, 2, 15, 0x105},
+    {0, 2, 21, 26, 2, 15, 0x139}
+};
+
+const struct WindowTemplate gUnknown_082FF070[] = {
+    {0, 2, 15, 26, 4, 15, 0x16D},
+    {0xFF, 0, 0, 0, 0, 0, 0}
+};
+
+const struct WindowTemplate gUnknown_082FF080[] = {
+    {0, 2, 15, 27, 4, 15, 1},
+    {0, 3, 5, 6, 4, 15, 0x6D},
+    {0, 3, 2, 9, 10, 15, 0x85},
+    {0xFF, 0, 0, 0, 0, 0, 0}
+};
+
+const u16 gMainMenuBgPal[] = INCBIN_U16("graphics/misc/main_menu_bg.gbapal");
+const u16 gMainMenuTextPal[] = INCBIN_U16("graphics/misc/main_menu_text.gbapal");
+
+const u8 gUnknown_082FF0E0[] = {10, 11, 12};
+const u8 gUnknown_082FF0E3[] = {10, 1, 12};
+
+const struct BgTemplate gUnknown_082FF0E8[] = {
+    {
+        .bg = 0,
+        .charBaseIndex = 2,
+        .mapBaseIndex = 30,
+        .screenSize = 0,
+        .paletteMode = 0,
+        .priority = 0,
+        .baseTile = 0
+    },
+    {
+        .bg = 1,
+        .charBaseIndex = 0,
+        .mapBaseIndex = 7,
+        .screenSize = 0,
+        .paletteMode = 0,
+        .priority = 3,
+        .baseTile = 0
+    }
+};
+
+const struct BgTemplate gUnknown_082FF0F0 = {
+    .bg = 0,
+    .charBaseIndex = 3,
+    .mapBaseIndex = 30,
+    .screenSize = 0,
+    .paletteMode = 0,
+    .priority = 0,
+    .baseTile = 0
+};
+
+const struct ArrowStruct gUnknown_082FF0F4 = {2, 0x78, 8, 3, 0x78, 0x98, 3, 4, 1, 1, 0};
+
+const union AffineAnimCmd gUnknown_082FF104[] = {
+    AFFINEANIMCMD_FRAME(-2, -2, 0, 0x30),
+    AFFINEANIMCMD_END
+};
+
+const union AffineAnimCmd *const gUnknown_082FF114 = gUnknown_082FF104;
+
+const struct MenuAction gUnknown_082FF118[] = {
+    {gText_BirchBoy, NULL},
+    {gText_BirchGirl, NULL}
+};
+
+const u8 *const gMalePresetNames[] = {
+    gText_DefaultNameStu,
+	gText_DefaultNameMilton,
+	gText_DefaultNameTom,
+	gText_DefaultNameKenny,
+	gText_DefaultNameReid,
+	gText_DefaultNameJude,
+	gText_DefaultNameJaxson,
+	gText_DefaultNameEaston,
+	gText_DefaultNameWalker,
+	gText_DefaultNameTeru,
+	gText_DefaultNameJohnny,
+	gText_DefaultNameBrett,
+	gText_DefaultNameSeth,
+	gText_DefaultNameTerry,
+	gText_DefaultNameCasey,
+	gText_DefaultNameDarren,
+	gText_DefaultNameLandon,
+	gText_DefaultNameCollin,
+	gText_DefaultNameStanley,
+	gText_DefaultNameQuincy
+};
+
+const u8 *const gFemalePresetNames[] = {
+    gText_DefaultNameKimmy,
+    gText_DefaultNameTiara,
+    gText_DefaultNameBella,
+    gText_DefaultNameJayla,
+    gText_DefaultNameAllie,
+    gText_DefaultNameLianna,
+    gText_DefaultNameSara,
+    gText_DefaultNameMonica,
+    gText_DefaultNameCamila,
+    gText_DefaultNameAubree,
+    gText_DefaultNameRuthie,
+    gText_DefaultNameHazel,
+    gText_DefaultNameNadine,
+    gText_DefaultNameTanja,
+    gText_DefaultNameYasmin,
+    gText_DefaultNameNicola,
+    gText_DefaultNameLillie,
+    gText_DefaultNameTerra,
+    gText_DefaultNameLucy,
+    gText_DefaultNameHalie
+};
+
 // .text
+
+enum
+{
+    HAS_NO_SAVED_GAME,  //NEW GAME, OPTION
+    HAS_SAVED_GAME,     //CONTINUE, NEW GAME, OPTION
+    HAS_MYSTERY_GIFT,   //CONTINUE, NEW GAME, MYSTERY EVENTS, OPTION
+    HAS_MYSTERY_EVENTS,
+};
+
+#define MAIN_MENU_BORDER_TILE   0x1D5
+
+void CB2_MainMenu(void)
+{
+    RunTasks();
+    AnimateSprites();
+    BuildOamBuffer();
+    UpdatePaletteFade();
+}
+
+void VBlankCB_MainMenu(void)
+{
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    TransferPlttBuffer();
+}
+
+void CB2_InitMainMenu(void)
+{
+    InitMainMenu(FALSE);
+}
+
+void CB2_ReinitMainMenu(void)
+{
+    InitMainMenu(TRUE);
+}
+
+u32 InitMainMenu(bool8 returningFromOptionsMenu)
+{
+    SetVBlankCallback(NULL);
+
+    SetGpuReg(REG_OFFSET_DISPCNT, 0);
+    SetGpuReg(REG_OFFSET_BG2CNT, 0);
+    SetGpuReg(REG_OFFSET_BG1CNT, 0);
+    SetGpuReg(REG_OFFSET_BG0CNT, 0);
+    SetGpuReg(REG_OFFSET_BG2HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG2VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG1HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG1VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG0HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG0VOFS, 0);
+
+    DmaFill16(3, 0, (void *)VRAM, VRAM_SIZE);
+    DmaFill32(3, 0, (void *)OAM, OAM_SIZE);
+    DmaFill16(3, 0, (void *)(PLTT + 2), PLTT_SIZE - 2);
+
+    ResetPaletteFade();
+    LoadPalette(gMainMenuBgPal, 0, 32);
+    LoadPalette(gMainMenuTextPal, 0xF0, 32);
+    ScanlineEffect_Stop();
+    ResetTasks();
+    ResetSpriteData();
+    FreeAllSpritePalettes();
+    if (returningFromOptionsMenu)
+        BeginNormalPaletteFade(-1, 0, 0x10, 0, 0x0000); // fade to black
+    else
+        BeginNormalPaletteFade(-1, 0, 0x10, 0, 0xFFFF); // fade to white
+    ResetBgsAndClearDma3BusyFlags(0);
+    InitBgsFromTemplates(0, gUnknown_082FF0E8, 2);
+    ChangeBgX(0, 0, 0);
+    ChangeBgY(0, 0, 0);
+    ChangeBgX(1, 0, 0);
+    ChangeBgY(1, 0, 0);
+    InitWindows(gUnknown_082FF038);
+    DeactivateAllTextPrinters();
+    LoadMainMenuWindowFrameTiles(0, MAIN_MENU_BORDER_TILE);
+
+    SetGpuReg(REG_OFFSET_WIN0H, 0);
+    SetGpuReg(REG_OFFSET_WIN0V, 0);
+    SetGpuReg(REG_OFFSET_WININ, 0);
+    SetGpuReg(REG_OFFSET_WINOUT, 0);
+    SetGpuReg(REG_OFFSET_BLDCNT, 0);
+    SetGpuReg(REG_OFFSET_BLDALPHA, 0);
+    SetGpuReg(REG_OFFSET_BLDY, 0);
+
+    EnableInterrupts(1);
+    SetVBlankCallback(VBlankCB_MainMenu);
+    SetMainCallback2(CB2_MainMenu);
+    SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_WIN0_ON | DISPCNT_OBJ_ON | DISPCNT_OBJ_1D_MAP);
+    ShowBg(0);
+    HideBg(1);
+    CreateTask(Task_MainMenuCheckSaveFile, 0);
+
+    return 0;
+}
+
+void Task_MainMenuCheckSaveFile(u8 taskId)
+{
+    s16* data = gTasks[taskId].data;
+
+    if (!gPaletteFade.active)
+    {
+        SetGpuReg(REG_OFFSET_WIN0H, 0);
+        SetGpuReg(REG_OFFSET_WIN0V, 0);
+        SetGpuReg(REG_OFFSET_WININ, 17);
+        SetGpuReg(REG_OFFSET_WINOUT, 0x31);
+        SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_EFFECT_DARKEN | BLDCNT_TGT1_BG0);
+        SetGpuReg(REG_OFFSET_BLDALPHA, 0);
+        SetGpuReg(REG_OFFSET_BLDY, 7);
+
+        if (sub_80093CC())
+            data[15] = 1;
+        switch (gSaveFileStatus)
+        {
+            case 1:
+                data[0] = HAS_SAVED_GAME;
+                if (IsMysteryGiftEnabled())
+                    data[0]++;
+                gTasks[taskId].func = Task_MainMenuCheckBattery;
+                break;
+            case 2:
+                CreateMainMenuErrorWindow(gText_SaveFileErased);
+                data[0] = 0;
+                gTasks[taskId].func = Task_WaitForSaveFileErrorWindow;
+                break;
+            case 0xFF:
+                CreateMainMenuErrorWindow(gText_SaveFileCorrupted);
+                gTasks[taskId].func = Task_WaitForSaveFileErrorWindow;
+                data[0] = HAS_SAVED_GAME;
+                if (IsMysteryGiftEnabled() == TRUE)
+                    data[0]++;
+                break;
+            case 0:
+            default:
+                data[0] = HAS_NO_SAVED_GAME;
+                gTasks[taskId].func = Task_MainMenuCheckBattery;
+                break;
+            case 4:
+                CreateMainMenuErrorWindow(gJPText_No1MSubCircuit);
+                gTasks[taskId].data[0] = HAS_NO_SAVED_GAME;
+                gTasks[taskId].func = Task_WaitForSaveFileErrorWindow;
+                break;
+        }
+        if (gUnknown_02022D06 & 0x8000)
+        {
+            switch (data[0])
+            {
+                case HAS_NO_SAVED_GAME:
+                case HAS_SAVED_GAME:
+                    gUnknown_02022D06 = data[0] + 1;
+                    break;
+                case HAS_MYSTERY_GIFT:
+                    gUnknown_02022D06 = 3;
+                    break;
+                case 3:
+                    gUnknown_02022D06 = 4;
+                    break;
+            }
+        }
+        gUnknown_02022D06 &= 0x7FFF;
+        data[1] = gUnknown_02022D06;
+        data[12] = data[0] + 2;
+    }
+}
+
+void Task_WaitForSaveFileErrorWindow(u8 taskId)
+{
+    RunTextPrinters();
+    if (!IsTextPrinterActive(7) && (gMain.newKeys & A_BUTTON))
+    {
+        ClearWindowTilemap(7);
+        sub_8032250(gUnknown_082FF070);
+        gTasks[taskId].func = Task_MainMenuCheckBattery;
+    }
+}
+
+void Task_MainMenuCheckBattery(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        SetGpuReg(REG_OFFSET_WIN0H, 0);
+        SetGpuReg(REG_OFFSET_WIN0V, 0);
+        SetGpuReg(REG_OFFSET_WININ, 17);
+        SetGpuReg(REG_OFFSET_WINOUT, 0x31);
+        SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_EFFECT_DARKEN | BLDCNT_TGT1_BG0);
+        SetGpuReg(REG_OFFSET_BLDALPHA, 0);
+        SetGpuReg(REG_OFFSET_BLDY, 7);
+
+        if (!(RtcGetErrorStatus() & RTC_ERR_FLAG_MASK))
+        {
+            gTasks[taskId].func = Task_DisplayMainMenu;
+        }
+        else
+        {
+            CreateMainMenuErrorWindow(gText_BatteryRunDry);
+            gTasks[taskId].func = Task_WaitForBatteryDryErrorWindow;
+        }
+    }
+}
+
+void Task_WaitForBatteryDryErrorWindow(u8 taskId)
+{
+    RunTextPrinters();
+    if (!IsTextPrinterActive(7) && (gMain.newKeys & A_BUTTON))
+    {
+        ClearWindowTilemap(7);
+        sub_8032250(gUnknown_082FF070);
+        gTasks[taskId].func = Task_DisplayMainMenu;
+    }
+}
+
+void Task_DisplayMainMenu(u8 taskId)
+{
+    s16* data = gTasks[taskId].data;
+    u16 palette;
+
+    if (!gPaletteFade.active)
+    {
+        SetGpuReg(REG_OFFSET_WIN0H, 0);
+        SetGpuReg(REG_OFFSET_WIN0V, 0);
+        SetGpuReg(REG_OFFSET_WININ, 17);
+        SetGpuReg(REG_OFFSET_WINOUT, 0x31);
+        SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_EFFECT_DARKEN | BLDCNT_TGT1_BG0);
+        SetGpuReg(REG_OFFSET_BLDALPHA, 0);
+        SetGpuReg(REG_OFFSET_BLDY, 7);
+
+        palette = RGB_BLACK;
+        LoadPalette(&palette, 254, 2);
+
+        palette = RGB_WHITE;
+        LoadPalette(&palette, 250, 2);
+
+        palette = RGB(12, 12, 12);
+        LoadPalette(&palette, 251, 2);
+
+        palette = RGB(26, 26, 25);
+        LoadPalette(&palette, 252, 2);
+
+        if (gSaveBlock2Ptr->playerGender == MALE)
+        {
+            palette = RGB(4, 16, 31);
+            LoadPalette(&palette, 241, 2);
+        }
+        else
+        {
+            palette = RGB(31, 3, 21);
+            LoadPalette(&palette, 241, 2);
+        }
+
+        switch (gTasks[taskId].data[0])
+        {
+            case HAS_NO_SAVED_GAME:
+            default:
+                FillWindowPixelBuffer(0, 0xAA);
+                FillWindowPixelBuffer(1, 0xAA);
+                box_print(0, 1, 0, 1, gUnknown_082FF0E0, -1, gText_MainMenuNewGame);
+                box_print(1, 1, 0, 1, gUnknown_082FF0E0, -1, gText_MainMenuOption);
+                PutWindowTilemap(0);
+                PutWindowTilemap(1);
+                CopyWindowToVram(0, 2);
+                CopyWindowToVram(1, 2);
+                DrawMainMenuWindowBorder(gUnknown_082FF038, MAIN_MENU_BORDER_TILE);
+                DrawMainMenuWindowBorder(&gUnknown_082FF038[1], MAIN_MENU_BORDER_TILE);
+                break;
+            case HAS_SAVED_GAME:
+                FillWindowPixelBuffer(2, 0xAA);
+                FillWindowPixelBuffer(3, 0xAA);
+                FillWindowPixelBuffer(4, 0xAA);
+                box_print(2, 1, 0, 1, gUnknown_082FF0E0, -1, gText_MainMenuContinue);
+                box_print(3, 1, 0, 1, gUnknown_082FF0E0, -1, gText_MainMenuNewGame);
+                box_print(4, 1, 0, 1, gUnknown_082FF0E0, -1, gText_MainMenuOption);
+                fmt_savegame();
+                PutWindowTilemap(2);
+                PutWindowTilemap(3);
+                PutWindowTilemap(4);
+                CopyWindowToVram(2, 2);
+                CopyWindowToVram(3, 2);
+                CopyWindowToVram(4, 2);
+                DrawMainMenuWindowBorder(gUnknown_082FF048, MAIN_MENU_BORDER_TILE);
+                DrawMainMenuWindowBorder(&gUnknown_082FF048[1], MAIN_MENU_BORDER_TILE);
+                DrawMainMenuWindowBorder(&gUnknown_082FF048[2], MAIN_MENU_BORDER_TILE);
+                break;
+            case HAS_MYSTERY_GIFT:
+                FillWindowPixelBuffer(2, 0xAA);
+                FillWindowPixelBuffer(3, 0xAA);
+                FillWindowPixelBuffer(4, 0xAA);
+                FillWindowPixelBuffer(5, 0xAA);
+                box_print(2, 1, 0, 1, gUnknown_082FF0E0, -1, gText_MainMenuContinue);
+                box_print(3, 1, 0, 1, gUnknown_082FF0E0, -1, gText_MainMenuNewGame);
+                box_print(4, 1, 0, 1, gUnknown_082FF0E0, -1, gText_MainMenuMysteryGift);
+                box_print(5, 1, 0, 1, gUnknown_082FF0E0, -1, gText_MainMenuOption);
+                fmt_savegame();
+                PutWindowTilemap(2);
+                PutWindowTilemap(3);
+                PutWindowTilemap(4);
+                PutWindowTilemap(5);
+                CopyWindowToVram(2, 2);
+                CopyWindowToVram(3, 2);
+                CopyWindowToVram(4, 2);
+                CopyWindowToVram(5, 2);
+                DrawMainMenuWindowBorder(gUnknown_082FF048, MAIN_MENU_BORDER_TILE);
+                DrawMainMenuWindowBorder(&gUnknown_082FF048[1], MAIN_MENU_BORDER_TILE);
+                DrawMainMenuWindowBorder(&gUnknown_082FF048[2], MAIN_MENU_BORDER_TILE);
+                DrawMainMenuWindowBorder(&gUnknown_082FF048[3], MAIN_MENU_BORDER_TILE);
+                break;
+            case HAS_MYSTERY_EVENTS:
+                FillWindowPixelBuffer(2, 0xAA);
+                FillWindowPixelBuffer(3, 0xAA);
+                FillWindowPixelBuffer(4, 0xAA);
+                FillWindowPixelBuffer(5, 0xAA);
+                FillWindowPixelBuffer(6, 0xAA);
+                box_print(2, 1, 0, 1, gUnknown_082FF0E0, -1, gText_MainMenuContinue);
+                box_print(3, 1, 0, 1, gUnknown_082FF0E0, -1, gText_MainMenuNewGame);
+                box_print(4, 1, 0, 1, gUnknown_082FF0E0, -1, gText_MainMenuMysteryGift2);
+                box_print(5, 1, 0, 1, gUnknown_082FF0E0, -1, gText_MainMenuMysteryEvents);
+                box_print(6, 1, 0, 1, gUnknown_082FF0E0, -1, gText_MainMenuOption);
+                fmt_savegame();
+                PutWindowTilemap(2);
+                PutWindowTilemap(3);
+                PutWindowTilemap(4);
+                PutWindowTilemap(5);
+                PutWindowTilemap(6);
+                CopyWindowToVram(2, 2);
+                CopyWindowToVram(3, 2);
+                CopyWindowToVram(4, 2);
+                CopyWindowToVram(5, 2);
+                CopyWindowToVram(6, 2);
+                DrawMainMenuWindowBorder(gUnknown_082FF048, MAIN_MENU_BORDER_TILE);
+                DrawMainMenuWindowBorder(&gUnknown_082FF048[1], MAIN_MENU_BORDER_TILE);
+                DrawMainMenuWindowBorder(&gUnknown_082FF048[2], MAIN_MENU_BORDER_TILE);
+                DrawMainMenuWindowBorder(&gUnknown_082FF048[3], MAIN_MENU_BORDER_TILE);
+                DrawMainMenuWindowBorder(&gUnknown_082FF048[4], MAIN_MENU_BORDER_TILE);
+                data[13] = AddScrollIndicatorArrowPair(&gUnknown_082FF0F4, &gUnknown_02022D06);
+                gTasks[data[13]].func = Task_ScrollIndicatorArrowPairOnMainMenu;
+                if (gUnknown_02022D06 == 4)
+                {
+                    ChangeBgY(0, 0x2000, 1);
+                    ChangeBgY(1, 0x2000, 1);
+                    data[14] = 1;
+                    gTasks[data[13]].data[15] = 1;
+                }
+                break;
+        }
+        gTasks[taskId].func = Task_HighlightSelectedMainMenuItem;
+    }
+}
+
+void Task_HighlightSelectedMainMenuItem(u8 taskId)
+{
+    HighlightSelectedMainMenuItem(gTasks[taskId].data[0], gTasks[taskId].data[1], gTasks[taskId].data[14]);
+    gTasks[taskId].func = Task_HandleMainMenuInput;
+}
+
+bool8 HandleMainMenuInput(u8 taskId)
+{
+    s16* data = gTasks[taskId].data;
+
+    if (gMain.newKeys & A_BUTTON)
+    {
+        PlaySE(SE_SELECT);
+        sub_80093CC();
+        BeginNormalPaletteFade(-1, 0, 0, 0x10, RGB_BLACK);
+        gTasks[taskId].func = Task_HandleMainMenuAPressed;
+    }
+    else if (gMain.newKeys & B_BUTTON)
+    {
+        PlaySE(SE_SELECT);
+        BeginNormalPaletteFade(-1, 0, 0, 0x10, RGB_WHITEALPHA);
+        SetGpuReg(REG_OFFSET_WIN0H, 0xF0);
+        SetGpuReg(REG_OFFSET_WIN0V, 0xA0);
+        gTasks[taskId].func = Task_HandleMainMenuBPressed;
+    }
+    else if ((gMain.newKeys & DPAD_UP) && data[1] > 0)
+    {
+        if (data[0] == 3 && data[14] == 1 && data[1] == 1)
+        {
+            ChangeBgY(0, 0x2000, 2);
+            ChangeBgY(1, 0x2000, 2);
+            gTasks[data[13]].data[15] = data[14] = 0;
+        }
+        data[1]--;
+        gUnknown_02022D06 = data[1];
+        return TRUE;
+    }
+    else if ((gMain.newKeys & DPAD_DOWN) && data[1] < data[12] - 1)
+    {
+        if (data[0] == 3 && data[1] == 3 && data[14] == 0)
+        {
+            ChangeBgY(0, 0x2000, 1);
+            ChangeBgY(1, 0x2000, 1);
+            gTasks[data[13]].data[15] = data[14] = 1;
+        }
+        data[1]++;
+        gUnknown_02022D06 = data[1];
+        return TRUE;
+    }
+    return FALSE;
+}
+
+void Task_HandleMainMenuInput(u8 taskId)
+{
+    if (HandleMainMenuInput(taskId))
+        gTasks[taskId].func = Task_HighlightSelectedMainMenuItem;
+}
+
+void Task_HandleMainMenuAPressed(u8 taskId)
+{
+    bool8 r2;
+    u8 action;
+
+    if (!gPaletteFade.active)
+    {
+        if (gTasks[taskId].data[0] == 3)
+            RemoveScrollIndicatorArrowPair(gTasks[taskId].data[13]);
+        sub_819746C(0, 1);
+        sub_819746C(1, 1);
+        sub_819746C(2, 1);
+        sub_819746C(3, 1);
+        sub_819746C(4, 1);
+        sub_819746C(5, 1);
+        sub_819746C(6, 1);
+        sub_819746C(7, 1);
+        r2 = sub_80093CC();
+        switch (gTasks[taskId].data[0])
+        {
+            case HAS_NO_SAVED_GAME:
+            default:
+                switch (gTasks[taskId].data[1])
+                {
+                    case 0:
+                    default:
+                        action = 0;
+                        break;
+                    case 1:
+                        action = 2;
+                        break;
+                }
+                break;
+            case HAS_SAVED_GAME:
+                switch (gTasks[taskId].data[1])
+                {
+                    case 0:
+                    default:
+                        action = 1;
+                        break;
+                    case 1:
+                        action = 0;
+                        break;
+                    case 2:
+                        action = 2;
+                        break;
+                }
+                break;
+            case HAS_MYSTERY_GIFT:
+                switch (gTasks[taskId].data[1])
+                {
+                    case 0:
+                    default:
+                        action = 1;
+                        break;
+                    case 1:
+                        action = 0;
+                        break;
+                    case 2:
+                        action = 3;
+                        if (r2 == FALSE)
+                        {
+                            action = 6;
+                            gTasks[taskId].data[0] = 0;
+                        }
+                        break;
+                    case 3:
+                        action = 2;
+                        break;
+                }
+                break;
+            case HAS_MYSTERY_EVENTS:
+                switch (gTasks[taskId].data[1])
+                {
+                    case 0:
+                    default:
+                        action = 1;
+                        break;
+                    case 1:
+                        action = 0;
+                        break;
+                    case 2:
+                        if (gTasks[taskId].data[15])
+                        {
+                            action = 3;
+                            if (r2 == FALSE)
+                            {
+                                action = 6;
+                                gTasks[taskId].data[0] = 0;
+                            }
+                        }
+                        else if (r2)
+                        {
+                            action = 6;
+                            gTasks[taskId].data[0] = 1;
+                        }
+                        else
+                        {
+                            action = 5;
+                        }
+                        break;
+                    case 3:
+                        if (r2)
+                        {
+                            action = 6;
+                            gTasks[taskId].data[0] = 2;
+                        }
+                        else
+                        {
+                            action = 4;
+                        }
+                        break;
+                    case 4:
+                        action = 2;
+                        break;
+                }
+                break;
+        }
+        ChangeBgY(0, 0, 0);
+        ChangeBgY(1, 0, 0);
+        switch (action)
+        {
+            case 0:
+            default:
+                gPlttBufferUnfaded[0] = RGB_BLACK;
+                gPlttBufferFaded[0] = RGB_BLACK;
+                gTasks[taskId].func = task_new_game_prof_birch_speech_1;
+                break;
+            case 1:
+                gPlttBufferUnfaded[0] = RGB_BLACK;
+                gPlttBufferFaded[0] = RGB_BLACK;
+                SetMainCallback2(CB2_ContinueSavedGame);
+                DestroyTask(taskId);
+                break;
+            case 2:
+                gMain.savedCallback = CB2_ReinitMainMenu;
+                SetMainCallback2(CB2_InitOptionMenu);
+                DestroyTask(taskId);
+                break;
+            case 3:
+                SetMainCallback2(c2_mystery_gift);
+                DestroyTask(taskId);
+                break;
+            case 4:
+                SetMainCallback2(CB2_InitMysteryEventMenu);
+                DestroyTask(taskId);
+                break;
+            case 5:
+                SetMainCallback2(sub_801867C);
+                DestroyTask(taskId);
+                break;
+            case 6:
+                gTasks[taskId].data[1] = 0;
+                gTasks[taskId].func = Task_DisplayMainMenuInvalidActionError;
+                gPlttBufferUnfaded[0xF1] = RGB_WHITE;
+                gPlttBufferFaded[0xF1] = RGB_WHITE;
+                SetGpuReg(REG_OFFSET_BG2HOFS, 0);
+                SetGpuReg(REG_OFFSET_BG2VOFS, 0);
+                SetGpuReg(REG_OFFSET_BG1HOFS, 0);
+                SetGpuReg(REG_OFFSET_BG1VOFS, 0);
+                SetGpuReg(REG_OFFSET_BG0HOFS, 0);
+                SetGpuReg(REG_OFFSET_BG0VOFS, 0);
+                BeginNormalPaletteFade(-1, 0, 16, 0, 0);
+                return;
+        }
+        FreeAllWindowBuffers();
+        if (action != 2)
+            gUnknown_02022D06 = 0;
+        else
+            gUnknown_02022D06 |= 0x8000;
+    }
+}
+
+void Task_HandleMainMenuBPressed(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        if (gTasks[taskId].data[0] == 3)
+            RemoveScrollIndicatorArrowPair(gTasks[taskId].data[13]);
+        gUnknown_02022D06 = 0;
+        FreeAllWindowBuffers();
+        SetMainCallback2(CB2_InitTitleScreen);
+        DestroyTask(taskId);
+    }
+}
+
+void Task_DisplayMainMenuInvalidActionError(u8 taskId)
+{
+    switch (gTasks[taskId].data[1])
+    {
+        case 0:
+            FillBgTilemapBufferRect_Palette0(0, 0, 0, 0, 30, 20);
+            switch (gTasks[taskId].data[0])
+            {
+                case 0:
+                    CreateMainMenuErrorWindow(gText_WirelessNotConnected);
+                    break;
+                case 1:
+                    CreateMainMenuErrorWindow(gText_MysteryGiftCantUse);
+                    break;
+                case 2:
+                    CreateMainMenuErrorWindow(gText_MysteryEventsCantUse);
+                    break;
+            }
+            gTasks[taskId].data[1]++;
+            break;
+        case 1:
+            if (!gPaletteFade.active)
+                gTasks[taskId].data[1]++;
+            break;
+        case 2:
+            RunTextPrinters();
+            if (!IsTextPrinterActive(7))
+                gTasks[taskId].data[1]++;
+            break;
+        case 3:
+            if (gMain.newKeys & (A_BUTTON | B_BUTTON))
+            {
+                PlaySE(SE_SELECT);
+                BeginNormalPaletteFade(-1, 0, 0, 16, RGB_BLACK);
+                gTasks[taskId].func = Task_HandleMainMenuBPressed;
+            }
+    }
+}
+
+void HighlightSelectedMainMenuItem(u8 menuType, u8 selectedMenuItem, s16 a)
+{
+    SetGpuReg(REG_OFFSET_WIN0H, 0x9E7);
+
+    switch (menuType)
+    {
+        case HAS_NO_SAVED_GAME:
+        default:
+            switch (selectedMenuItem)
+            {
+                case 0:
+                default:
+                    SetGpuReg(REG_OFFSET_WIN0V, 0x11F);
+                    break;
+                case 1:
+                    SetGpuReg(REG_OFFSET_WIN0V, 0x213F);
+                    break;
+            }
+            break;
+        case HAS_SAVED_GAME:
+            switch (selectedMenuItem)
+            {
+                case 0:
+                default:
+                    SetGpuReg(REG_OFFSET_WIN0V, 0x13F);
+                    break;
+                case 1:
+                    SetGpuReg(REG_OFFSET_WIN0V, 0x415F);
+                    break;
+                case 2:
+                    SetGpuReg(REG_OFFSET_WIN0V, 0x617F);
+                    break;
+            }
+            break;
+        case HAS_MYSTERY_GIFT:
+            switch (selectedMenuItem)
+            {
+                case 0:
+                default:
+                    SetGpuReg(REG_OFFSET_WIN0V, 0x13F);
+                    break;
+                case 1:
+                    SetGpuReg(REG_OFFSET_WIN0V, 0x415F);
+                    break;
+                case 2:
+                    SetGpuReg(REG_OFFSET_WIN0V, 0x617F);
+                    break;
+                case 3:
+                    SetGpuReg(REG_OFFSET_WIN0V, 0x819F);
+                    break;
+            }
+            break;
+        case HAS_MYSTERY_EVENTS:
+            switch (selectedMenuItem)
+            {
+                case 0:
+                default:
+                    SetGpuReg(REG_OFFSET_WIN0V, 0x13F);
+                    break;
+                case 1:
+                    if (a)
+                        SetGpuReg(REG_OFFSET_WIN0V, 0x213F);
+                    else
+                        SetGpuReg(REG_OFFSET_WIN0V, 0x415F);
+                    break;
+                case 2:
+                    if (a)
+                        SetGpuReg(REG_OFFSET_WIN0V, 0x415F);
+                    else
+                        SetGpuReg(REG_OFFSET_WIN0V, 0x617F);
+                    break;
+                case 3:
+                    if (a)
+                        SetGpuReg(REG_OFFSET_WIN0V, 0x617F);
+                    else
+                        SetGpuReg(REG_OFFSET_WIN0V, 0x819F);
+                    break;
+                case 4:
+                    SetGpuReg(REG_OFFSET_WIN0V, 0x819F);
+                    break;
+            }
+            break;
+    }
+}
+
+void task_new_game_prof_birch_speech_1(u8 taskId)
+{
+    SetGpuReg(REG_OFFSET_DISPCNT, 0);
+    SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_OBJ_ON | DISPCNT_OBJ_1D_MAP);
+    InitBgFromTemplate(&gUnknown_082FF0F0);
+    SetGpuReg(REG_OFFSET_WIN0H, 0);
+    SetGpuReg(REG_OFFSET_WIN0V, 0);
+    SetGpuReg(REG_OFFSET_WININ, 0);
+    SetGpuReg(REG_OFFSET_WINOUT, 0);
+    SetGpuReg(REG_OFFSET_BLDCNT, 0);
+    SetGpuReg(REG_OFFSET_BLDALPHA, 0);
+    SetGpuReg(REG_OFFSET_BLDY, 0);
+
+    LZ77UnCompVram(gBirchIntroShadowGfx, (void*)VRAM);
+    LZ77UnCompVram(gUnknown_082FEEF0, (void*)(VRAM + 0x3800));
+    LoadPalette(gUnknown_082FECFC, 0, 64);
+    LoadPalette(gUnknown_082FF028, 1, 16);
+    ScanlineEffect_Stop();
+    ResetSpriteData();
+    FreeAllSpritePalettes();
+    dp13_810BB8C();
+    AddBirchSpeechObjects(taskId);
+    BeginNormalPaletteFade(-1, 0, 16, 0, 0);
+    gTasks[taskId].data[4] = 0;
+    gTasks[taskId].func = task_new_game_prof_birch_speech_2;
+    gTasks[taskId].data[2] = 0xFF;
+    gTasks[taskId].data[3] = 0xFF;
+    gTasks[taskId].data[7] = 0xD8;
+    PlayBGM(MUS_DOORO_X4);
+    ShowBg(0);
+    ShowBg(1);
+}
+
+void task_new_game_prof_birch_speech_2(u8 taskId)
+{
+    u8 spriteId;
+
+    if (gTasks[taskId].data[7])
+    {
+        gTasks[taskId].data[7]--;
+    }
+    else
+    {
+        spriteId = gTasks[taskId].data[8];
+        gSprites[spriteId].pos1.x = 0x88;
+        gSprites[spriteId].pos1.y = 0x3C;
+        gSprites[spriteId].invisible = 0;
+        gSprites[spriteId].oam.objMode = 1;
+        sub_8031BAC(taskId, 10);
+        sub_8031D34(taskId, 20);
+        gTasks[taskId].data[7] = 0x50;
+        gTasks[taskId].func = task_new_game_prof_birch_speech_3;
+    }
+}
+
+void task_new_game_prof_birch_speech_3(u8 taskId)
+{
+    if (gTasks[taskId].data[5])
+    {
+        gSprites[gTasks[taskId].data[8]].oam.objMode = 0;
+        if (gTasks[taskId].data[7])
+        {
+            gTasks[taskId].data[7]--;
+        }
+        else
+        {
+            InitWindows(gUnknown_082FF080);
+            LoadMainMenuWindowFrameTiles(0, 0xF3);
+            copy_textbox_border_tile_patterns_to_vram(0, 0xFC,  0xF0);
+            unknown_rbox_to_vram(0, 1);
+            PutWindowTilemap(0);
+            CopyWindowToVram(0, 2);
+            sub_8032318(0);
+            StringExpandPlaceholders(gStringVar4, gText_Birch_Welcome);
+            AddTextPrinterForMessage(1);
+            gTasks[taskId].func = task_new_game_prof_birch_speech_4;
+        }
+    }
+}
+
+void task_new_game_prof_birch_speech_4(u8 taskId)
+{
+    if (!gPaletteFade.active && !sub_8197224())
+    {
+        gTasks[taskId].func = task_new_game_prof_birch_speech_5;
+        StringExpandPlaceholders(gStringVar4, gText_ThisIsAPokemon);
+        AddTextPrinterWithCallbackForMessage(1, sub_80323A0);
+        gUnknown_03000DD0 = taskId;
+    }
+}
+
+void task_new_game_prof_birch_speech_5(u8 taskId)
+{
+    if (!sub_8197224())
+    {
+        StringExpandPlaceholders(gStringVar4, gText_Birch_MainSpeech);
+        AddTextPrinterForMessage(1);
+        gTasks[taskId].func = task_new_game_prof_birch_speech_6;
+    }
+}
+
+void sub_8030A70(u8 taskId)
+{
+    u8 spriteId = gTasks[gUnknown_03000DD0].data[9];
+
+    gSprites[spriteId].pos1.x = 0x64;
+    gSprites[spriteId].pos1.y = 0x4B;
+    gSprites[spriteId].invisible = 0;
+    gSprites[spriteId].data[0] = 0;
+
+    CreatePokeballSpriteToReleaseMon(spriteId, gSprites[spriteId].oam.paletteNum, 0x70, 0x3A, 0, 0, 0x20, 0xFFFF, SPECIES_LOTAD);
+    gTasks[taskId].func = sub_8030B14;
+    gTasks[gUnknown_03000DD0].data[7] = 0;
+}
+
+void sub_8030B14(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+    struct Sprite *sprite = &gSprites[gTasks[gUnknown_03000DD0].data[9]];
+
+    switch (data[0])
+    {
+        case 0:
+            if (sprite->callback == SpriteCallbackDummy)
+            {
+                sprite->oam.affineMode = 0;
+                goto _08030B98_inc_data0;
+            }
+            break;
+        case 1:
+            if (gTasks[gUnknown_03000DD0].data[7] >= 0x60)
+            {
+                DestroyTask(taskId);
+                if (gTasks[gUnknown_03000DD0].data[7] < 0x4000)
+                    gTasks[gUnknown_03000DD0].data[7]++;
+            }
+            break;
+        _08030B98_inc_data0:
+        default:
+            data[0]++;
+            if (gTasks[gUnknown_03000DD0].data[7] < 0x4000)
+                gTasks[gUnknown_03000DD0].data[7]++;
+            break;
+    }
+}
+
+void task_new_game_prof_birch_speech_6(u8 taskId)
+{
+    if (!sub_8197224())
+    {
+        gUnknown_02022D04 = 0;
+        StringExpandPlaceholders(gStringVar4, gText_Birch_AndYouAre);
+        AddTextPrinterForMessage(1);
+        gTasks[taskId].func = task_new_game_prof_birch_speech_7;
+    }
+}
+
+void task_new_game_prof_birch_speech_7(u8 taskId)
+{
+    if (!sub_8197224())
+    {
+        gSprites[gTasks[taskId].data[8]].oam.objMode = 1;
+        gSprites[gTasks[taskId].data[9]].oam.objMode = 1;
+        sub_8031ACC(taskId, 2);
+        sub_8031C88(taskId, 1);
+        gTasks[taskId].data[7] = 0x40;
+        gTasks[taskId].func = task_new_game_prof_birch_speech_8;
+    }
+}
+
+void task_new_game_prof_birch_speech_8(u8 taskId)
+{
+    if (gTasks[taskId].data[4] != -60)
+    {
+        gTasks[taskId].data[4] -= 2;
+        SetGpuReg(REG_OFFSET_BG1HOFS, gTasks[taskId].data[4]);
+    }
+    else
+    {
+        gTasks[taskId].data[4] = -60;
+        gTasks[taskId].func = task_new_game_prof_birch_speech_9;
+    }
+}
+
+void task_new_game_prof_birch_speech_9(u8 taskId)
+{
+    if (gTasks[taskId].data[5])
+    {
+        gSprites[gTasks[taskId].data[8]].invisible = 1;
+        gSprites[gTasks[taskId].data[9]].invisible = 1;
+        if (gTasks[taskId].data[7])
+        {
+            gTasks[taskId].data[7]--;
+        }
+        else
+        {
+            u8 spriteId = gTasks[taskId].data[10];
+
+            gSprites[spriteId].pos1.x = 0xB4;
+            gSprites[spriteId].pos1.y = 0x3C;
+            gSprites[spriteId].invisible = 0;
+            gSprites[spriteId].oam.objMode = 1;
+            gTasks[taskId].data[2] = spriteId;
+            gTasks[taskId].data[6] = 0;
+            sub_8031BAC(taskId, 2);
+            sub_8031D34(taskId, 1);
+            gTasks[taskId].func = task_new_game_prof_birch_speech_10;
+        }
+    }
+}
+
+void task_new_game_prof_birch_speech_10(u8 taskId)
+{
+    if (gTasks[taskId].data[5])
+    {
+        gSprites[gTasks[taskId].data[2]].oam.objMode = 0;
+        gTasks[taskId].func = task_new_game_prof_birch_speech_11;
+    }
+}
+
+void task_new_game_prof_birch_speech_11(u8 taskId)
+{
+    sub_8032318(0);
+    StringExpandPlaceholders(gStringVar4, gText_Birch_BoyOrGirl);
+    AddTextPrinterForMessage(1);
+    gTasks[taskId].func = task_new_game_prof_birch_speech_12;
+}
+
+void task_new_game_prof_birch_speech_12(u8 taskId)
+{
+    if (!sub_8197224())
+    {
+        sub_8031D74();
+        gTasks[taskId].func = task_new_game_prof_birch_speech_13;
+    }
+}
+
+void task_new_game_prof_birch_speech_13(u8 taskId)
+{
+    int gender = sub_8031DB4();
+    int r3;
+
+    switch (gender)
+    {
+        case MALE:
+            PlaySE(SE_SELECT);
+            gSaveBlock2Ptr->playerGender = gender;
+            sub_80322E0(1, 1);
+            gTasks[taskId].func = task_new_game_prof_birch_speech_14;
+            break;
+        case FEMALE:
+            PlaySE(SE_SELECT);
+            gSaveBlock2Ptr->playerGender = gender;
+            sub_80322E0(1, 1);
+            gTasks[taskId].func = task_new_game_prof_birch_speech_14;
+            break;
+    }
+    r3 = GetMenuCursorPos();
+    if (r3 != gTasks[taskId].data[6])
+    {
+        gTasks[taskId].data[6] = r3;
+        gSprites[gTasks[taskId].data[2]].oam.objMode = 1;
+        sub_8031ACC(taskId, 0);
+        gTasks[taskId].func = sub_8030ED4;
+    }
+}
+
+void sub_8030ED4(u8 taskId)
+{
+    u8 spriteId = gTasks[taskId].data[2];
+    if (gTasks[taskId].data[5] == 0)
+    {
+        gSprites[spriteId].pos1.x += 4;
+    }
+    else
+    {
+        gSprites[spriteId].invisible = 1;
+        if (gTasks[taskId].data[6])
+            spriteId = gTasks[taskId].data[11];
+        else
+            spriteId = gTasks[taskId].data[10];
+        gSprites[spriteId].pos1.x = 0xF0;
+        gSprites[spriteId].pos1.y = 0x3C;
+        gSprites[spriteId].invisible = 0;
+        gTasks[taskId].data[2] = spriteId;
+        gSprites[spriteId].oam.objMode = 1;
+        sub_8031BAC(taskId, 0);
+        gTasks[taskId].func = sub_8030F7C;
+    }
+}
+
+void sub_8030F7C(u8 taskId)
+{
+    u8 spriteId = gTasks[taskId].data[2];
+
+    if (gSprites[spriteId].pos1.x > 0xB4)
+    {
+        gSprites[spriteId].pos1.x -= 4;
+    }
+    else
+    {
+        gSprites[spriteId].pos1.x = 0xB4;
+        if (gTasks[taskId].data[5])
+        {
+            gSprites[spriteId].oam.objMode = 0;
+            gTasks[taskId].func = task_new_game_prof_birch_speech_13;
+        }
+    }
+}
+
+void task_new_game_prof_birch_speech_14(u8 taskId)
+{
+    sub_8032318(0);
+    StringExpandPlaceholders(gStringVar4, gText_Birch_WhatsYourName);
+    AddTextPrinterForMessage(1);
+    gTasks[taskId].func = task_new_game_prof_birch_speech_15;
+}
+
+void task_new_game_prof_birch_speech_15(u8 taskId)
+{
+    if (!sub_8197224())
+        gTasks[taskId].func = task_new_game_prof_birch_speech_16;
+}
+
+void task_new_game_prof_birch_speech_16(u8 taskId)
+{
+    if ((gMain.newKeys & A_BUTTON) || (gMain.newKeys & B_BUTTON))
+    {
+        BeginNormalPaletteFade(-1, 0, 0, 16, RGB_BLACK);
+        gTasks[taskId].func = task_new_game_prof_birch_speech_17;
+    }
+}
+
+void task_new_game_prof_birch_speech_17(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        FreeAllWindowBuffers();
+        sub_818D820(gTasks[taskId].data[9]);
+        set_default_player_name(Random() % 20);
+        DestroyTask(taskId);
+        DoNamingScreen(0, gSaveBlock2Ptr->playerName, gSaveBlock2Ptr->playerGender, 0, 0, new_game_prof_birch_speech_part2_start);
+    }
+}
+
+void task_new_game_prof_birch_speech_part2_2(u8 taskId)
+{
+    sub_8032318(0);
+    StringExpandPlaceholders(gStringVar4, gText_Birch_SoItsPlayer);
+    AddTextPrinterForMessage(1);
+    gTasks[taskId].func = task_new_game_prof_birch_speech_part2_3;
+}
+
+void task_new_game_prof_birch_speech_part2_3(u8 taskId)
+{
+    if (!sub_8197224())
+    {
+        sub_80323CC(2, 1, 0xF3, 0xDF, 2, 15);
+        gTasks[taskId].func = task_new_game_prof_birch_speech_part2_4;
+    }
+}
+
+void task_new_game_prof_birch_speech_part2_4(u8 taskId)
+{
+    switch (ProcessMenuInputNoWrap_())
+    {
+        case 0:
+            PlaySE(SE_SELECT);
+            gSprites[gTasks[taskId].data[2]].oam.objMode = 1;
+            sub_8031ACC(taskId, 2);
+            sub_8031C88(taskId, 1);
+            gTasks[taskId].func = task_new_game_prof_birch_speech_part2_5;
+            break;
+        case -1:
+        case 1:
+            PlaySE(SE_SELECT);
+            gTasks[taskId].func = task_new_game_prof_birch_speech_11;
+    }
+}
+
+void task_new_game_prof_birch_speech_part2_5(u8 taskId)
+{
+    if (gTasks[taskId].data[4])
+    {
+        gTasks[taskId].data[4] += 2;
+        SetGpuReg(REG_OFFSET_BG1HOFS, gTasks[taskId].data[4]);
+    }
+    else
+    {
+        gTasks[taskId].func = task_new_game_prof_birch_speech_part2_6;
+    }
+}
+
+void task_new_game_prof_birch_speech_part2_6(u8 taskId)
+{
+    u8 spriteId;
+
+    if (gTasks[taskId].data[5])
+    {
+        gSprites[gTasks[taskId].data[10]].invisible = TRUE;
+        gSprites[gTasks[taskId].data[11]].invisible = TRUE;
+        spriteId = gTasks[taskId].data[8];
+        gSprites[spriteId].pos1.x = 0x88;
+        gSprites[spriteId].pos1.y = 0x3C;
+        gSprites[spriteId].invisible = FALSE;
+        gSprites[spriteId].oam.objMode = 1;
+        spriteId = gTasks[taskId].data[9];
+        gSprites[spriteId].pos1.x = 0x64;
+        gSprites[spriteId].pos1.y = 0x4B;
+        gSprites[spriteId].invisible = FALSE;
+        gSprites[spriteId].oam.objMode = 1;
+        sub_8031BAC(taskId, 2);
+        sub_8031D34(taskId, 1);
+        sub_8032318(0);
+        StringExpandPlaceholders(gStringVar4, gText_Birch_YourePlayer);
+        AddTextPrinterForMessage(1);
+        gTasks[taskId].func = task_new_game_prof_birch_speech_part2_7;
+    }
+}
+
+void task_new_game_prof_birch_speech_part2_7(u8 taskId)
+{
+    if (gTasks[taskId].data[5])
+    {
+        gSprites[gTasks[taskId].data[8]].oam.objMode = 0;
+        gSprites[gTasks[taskId].data[9]].oam.objMode = 0;
+        if (!sub_8197224())
+        {
+            gSprites[gTasks[taskId].data[8]].oam.objMode = 1;
+            gSprites[gTasks[taskId].data[9]].oam.objMode = 1;
+            sub_8031ACC(taskId, 2);
+            sub_8031C88(taskId, 1);
+            gTasks[taskId].data[7] = 64;
+            gTasks[taskId].func = task_new_game_prof_birch_speech_part2_8;
+        }
+    }
+}
+
+void task_new_game_prof_birch_speech_part2_8(u8 taskId)
+{
+    u8 spriteId;
+
+    if (gTasks[taskId].data[5])
+    {
+        gSprites[gTasks[taskId].data[8]].invisible = 1;
+        gSprites[gTasks[taskId].data[9]].invisible = 1;
+        if (gTasks[taskId].data[7])
+        {
+            gTasks[taskId].data[7]--;
+            return;
+        }
+        if (gSaveBlock2Ptr->playerGender != MALE)
+            spriteId = gTasks[taskId].data[11];
+        else
+            spriteId = gTasks[taskId].data[10];
+        gSprites[spriteId].pos1.x = 0x78;
+        gSprites[spriteId].pos1.y = 0x3C;
+        gSprites[spriteId].invisible = 0;
+        gSprites[spriteId].oam.objMode = 1;
+        gTasks[taskId].data[2] = spriteId;
+        sub_8031BAC(taskId, 2);
+        sub_8031D34(taskId, 1);
+        StringExpandPlaceholders(gStringVar4, gText_Birch_AreYouReady);
+        AddTextPrinterForMessage(1);
+        gTasks[taskId].func = task_new_game_prof_birch_speech_part2_9;
+    }
+}
+
+void task_new_game_prof_birch_speech_part2_9(u8 taskId)
+{
+    u8 spriteId;
+
+    if (gTasks[taskId].data[5])
+    {
+        gSprites[gTasks[taskId].data[2]].oam.objMode = 0;
+        if (!sub_8197224())
+        {
+            spriteId = gTasks[taskId].data[2];
+            gSprites[spriteId].oam.affineMode = 1;
+            gSprites[spriteId].affineAnims = &gUnknown_082FF114;
+            InitSpriteAffineAnim(&gSprites[spriteId]);
+            StartSpriteAffineAnim(&gSprites[spriteId], 0);
+            gSprites[spriteId].callback = sub_80318D8;
+            BeginNormalPaletteFade(0x0000FFFF, 0, 0, 16, RGB_BLACK);
+            FadeOutBGM(4);
+            gTasks[taskId].func = task_new_game_prof_birch_speech_part2_10;
+        }
+    }
+}
+
+void task_new_game_prof_birch_speech_part2_10(u8 taskId)
+{
+    u8 spriteId = gTasks[taskId].data[2];
+
+    if (gSprites[spriteId].affineAnimEnded)
+        gTasks[taskId].func = task_new_game_prof_birch_speech_part2_11;
+}
+
+void task_new_game_prof_birch_speech_part2_11(u8 taskId)
+{
+    u8 spriteId;
+
+    if (!gPaletteFade.active)
+    {
+        spriteId = gTasks[taskId].data[2];
+        gSprites[spriteId].callback = nullsub_11;
+        SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_OBJ_ON | DISPCNT_OBJ_1D_MAP);
+        BeginNormalPaletteFade(0xFFFF0000, 0, 0, 16, RGB_WHITEALPHA);
+        gTasks[taskId].func = task_new_game_prof_birch_speech_part2_12;
+    }
+}
+
+void task_new_game_prof_birch_speech_part2_12(u8 taskId)
+{
+    if (!gPaletteFade.active)
+    {
+        FreeAllWindowBuffers();
+        sub_818D820(gTasks[taskId].data[9]);
+        dp13_810BB8C();
+        SetMainCallback2(CB2_NewGame);
+        DestroyTask(taskId);
+    }
+}
+
+void new_game_prof_birch_speech_part2_start(void)
+{
+    u8 taskId;
+    u8 spriteId;
+    u16 savedIme;
+
+    ResetBgsAndClearDma3BusyFlags(0);
+    SetGpuReg(REG_OFFSET_DISPCNT, 0);
+    SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_OBJ_ON | DISPCNT_OBJ_1D_MAP);
+    InitBgsFromTemplates(0, gUnknown_082FF0E8, 2);
+    InitBgFromTemplate(&gUnknown_082FF0F0);
+    SetVBlankCallback(NULL);
+    SetGpuReg(REG_OFFSET_BG2CNT, 0);
+    SetGpuReg(REG_OFFSET_BG1CNT, 0);
+    SetGpuReg(REG_OFFSET_BG0CNT, 0);
+    SetGpuReg(REG_OFFSET_BG2HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG2VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG1HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG1VOFS, 0);
+    SetGpuReg(REG_OFFSET_BG0HOFS, 0);
+    SetGpuReg(REG_OFFSET_BG0VOFS, 0);
+    DmaFill16(3, 0, VRAM, VRAM_SIZE);
+    DmaFill32(3, 0, OAM, OAM_SIZE);
+    DmaFill16(3, 0, PLTT, PLTT_SIZE);
+    ResetPaletteFade();
+    LZ77UnCompVram(gBirchIntroShadowGfx, (u8*)VRAM);
+    LZ77UnCompVram(gUnknown_082FEEF0, (u8*)(VRAM + 0x3800));
+    LoadPalette(gUnknown_082FECFC, 0, 64);
+    LoadPalette(&gUnknown_082FF018[1], 1, 16);
+    ResetTasks();
+    taskId = CreateTask(task_new_game_prof_birch_speech_part2_1, 0);
+    gTasks[taskId].data[7] = 5;
+    gTasks[taskId].data[4] = -60;
+    ScanlineEffect_Stop();
+    ResetSpriteData();
+    FreeAllSpritePalettes();
+    dp13_810BB8C();
+    AddBirchSpeechObjects(taskId);
+    if (gSaveBlock2Ptr->playerGender != MALE)
+    {
+        gTasks[taskId].data[6] = FEMALE;
+        spriteId = gTasks[taskId].data[11];
+    }
+    else
+    {
+        gTasks[taskId].data[6] = MALE;
+        spriteId = gTasks[taskId].data[10];
+    }
+    gSprites[spriteId].pos1.x = 0xB4;
+    gSprites[spriteId].pos1.y = 0x3C;
+    gSprites[spriteId].invisible = 0;
+    gTasks[taskId].data[2] = spriteId;
+    SetGpuReg(REG_OFFSET_BG1HOFS, -60);
+    BeginNormalPaletteFade(-1, 0, 16, 0, 0);
+    SetGpuReg(REG_OFFSET_WIN0H, 0);
+    SetGpuReg(REG_OFFSET_WIN0V, 0);
+    SetGpuReg(REG_OFFSET_WININ, 0);
+    SetGpuReg(REG_OFFSET_WINOUT, 0);
+    SetGpuReg(REG_OFFSET_BLDCNT, 0);
+    SetGpuReg(REG_OFFSET_BLDALPHA, 0);
+    SetGpuReg(REG_OFFSET_BLDY, 0);
+    ShowBg(0);
+    ShowBg(1);
+    savedIme = REG_IME;
+    REG_IME = 0;
+    REG_IE |= 1;
+    REG_IME = savedIme;
+    SetVBlankCallback(VBlankCB_MainMenu);
+    SetMainCallback2(CB2_MainMenu);
+    InitWindows(gUnknown_082FF080);
+    LoadMainMenuWindowFrameTiles(0, 0xF3);
+    copy_textbox_border_tile_patterns_to_vram(0, 0xFC, 0xF0);
+    PutWindowTilemap(0);
+    CopyWindowToVram(0, 3);
+}
+
+void nullsub_11(struct Sprite *sprite)
+{
+}
+
+void sub_80318D8(struct Sprite *sprite)
+{
+    u32 y;
+
+    y = (sprite->pos1.y << 16) + sprite->data[0] + 0xC000;
+    sprite->pos1.y = y >> 16;
+    sprite->data[0] = y;
+}
+
+u8 sub_80318F4(u8 a, u8 b)
+{
+    return sub_818D3E4(SPECIES_LOTAD, 8, 0, 1, a, b, 14, -1);
+}
+
+void AddBirchSpeechObjects(u8 taskId)
+{
+    u8 spriteId = AddNewGameBirchObject(0x88, 0x3C, 1);
+    u8 spriteId2;
+    u8 spriteId3;
+    u8 spriteId4;
+
+    gSprites[spriteId].callback = nullsub_11;
+    gSprites[spriteId].oam.priority = 0;
+    gSprites[spriteId].invisible = TRUE;
+    gTasks[taskId].data[8] = spriteId;
+    spriteId2 = sub_80318F4(100, 0x4B);
+    gSprites[spriteId2].callback = nullsub_11;
+    gSprites[spriteId2].oam.priority = 0;
+    gSprites[spriteId2].invisible = TRUE;
+    gTasks[taskId].data[9] = spriteId2;
+    spriteId3 = CreateTrainerSprite(FacilityClassToPicIndex(0x3C), 0x78, 0x3C, 0, gDecompressionBuffer);
+    gSprites[spriteId3].callback = nullsub_11;
+    gSprites[spriteId3].invisible = TRUE;
+    gSprites[spriteId3].oam.priority = 0;
+    gTasks[taskId].data[10] = spriteId3;
+    spriteId4 = CreateTrainerSprite(FacilityClassToPicIndex(0x3F), 0x78, 0x3C, 0, &gDecompressionBuffer[0x800]);
+    gSprites[spriteId4].callback = nullsub_11;
+    gSprites[spriteId4].invisible = TRUE;
+    gSprites[spriteId4].oam.priority = 0;
+    gTasks[taskId].data[11] = spriteId4;
+}
+
+void sub_8031A5C(u8 taskId)
+{
+    int alpha;
+
+    if (gTasks[taskId].data[1] == 0)
+    {
+        gTasks[gTasks[taskId].data[0]].data[5] = 1;
+        DestroyTask(taskId);
+    }
+    else if (gTasks[taskId].data[4])
+    {
+        gTasks[taskId].data[4]--;
+    }
+    else
+    {
+        gTasks[taskId].data[4] = gTasks[taskId].data[3];
+        gTasks[taskId].data[1]--;
+        gTasks[taskId].data[2]++;
+        alpha = gTasks[taskId].data[2] << 8;
+        SetGpuReg(REG_OFFSET_BLDALPHA, gTasks[taskId].data[1] + alpha);
+    }
+}
+
+void sub_8031ACC(u8 taskId, u8 a)
+{
+    u8 taskId2;
+
+    SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_TGT2_BG1 | BLDCNT_EFFECT_BLEND | BLDCNT_TGT1_OBJ);
+    SetGpuReg(REG_OFFSET_BLDALPHA, BLDALPHA_BLEND(16, 0));
+    SetGpuReg(REG_OFFSET_BLDY, 0);
+    gTasks[taskId].data[5] = 0;
+    taskId2 = CreateTask(sub_8031A5C, 0);
+    gTasks[taskId2].data[0] = taskId;
+    gTasks[taskId2].data[1] = 16;
+    gTasks[taskId2].data[2] = 0;
+    gTasks[taskId2].data[3] = a;
+    gTasks[taskId2].data[4] = a;
+}
+
+void sub_8031B3C(u8 taskId)
+{
+    int alpha;
+
+    if (gTasks[taskId].data[1] == 16)
+    {
+        gTasks[gTasks[taskId].data[0]].data[5] = 1;
+        DestroyTask(taskId);
+    }
+    else if (gTasks[taskId].data[4])
+    {
+        gTasks[taskId].data[4]--;
+    }
+    else
+    {
+        gTasks[taskId].data[4] = gTasks[taskId].data[3];
+        gTasks[taskId].data[1]++;
+        gTasks[taskId].data[2]--;
+        alpha = gTasks[taskId].data[2] << 8;
+        SetGpuReg(REG_OFFSET_BLDALPHA, gTasks[taskId].data[1] + alpha);
+    }
+}
+
+void sub_8031BAC(u8 taskId, u8 a)
+{
+    u8 taskId2;
+
+    SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_TGT2_BG1 | BLDCNT_EFFECT_BLEND | BLDCNT_TGT1_OBJ);
+    SetGpuReg(REG_OFFSET_BLDALPHA, BLDALPHA_BLEND(0, 16));
+    SetGpuReg(REG_OFFSET_BLDY, 0);
+    gTasks[taskId].data[5] = 0;
+    taskId2 = CreateTask(sub_8031B3C, 0);
+    gTasks[taskId2].data[0] = taskId;
+    gTasks[taskId2].data[1] = 0;
+    gTasks[taskId2].data[2] = 16;
+    gTasks[taskId2].data[3] = a;
+    gTasks[taskId2].data[4] = a;
+}
+
+void sub_8031C1C(u8 taskId)
+{
+    if (gTasks[taskId].data[2])
+    {
+        gTasks[taskId].data[2]--;
+    }
+    else if (gTasks[taskId].data[1] == 8)
+    {
+        DestroyTask(taskId);
+    }
+    else if (gTasks[taskId].data[4])
+    {
+        gTasks[taskId].data[4]--;
+    }
+    else
+    {
+        gTasks[taskId].data[4] = gTasks[taskId].data[3];
+        gTasks[taskId].data[1]++;
+        LoadPalette(&gUnknown_082FF018[gTasks[taskId].data[1]], 1, 16);
+    }
+}
+
+void sub_8031C88(u8 taskId, u8 a)
+{
+    u8 taskId2;
+
+    taskId2 = CreateTask(sub_8031C1C, 0);
+    gTasks[taskId2].data[0] = taskId;
+    gTasks[taskId2].data[1] = 0;
+    gTasks[taskId2].data[2] = 8;
+    gTasks[taskId2].data[3] = a;
+    gTasks[taskId2].data[4] = a;
+}
+
+void sub_8031CC8(u8 taskId)
+{
+    if (gTasks[taskId].data[2])
+    {
+        gTasks[taskId].data[2]--;
+    }
+    else if (gTasks[taskId].data[1] == 0)
+    {
+        DestroyTask(taskId);
+    }
+    else if (gTasks[taskId].data[4])
+    {
+        gTasks[taskId].data[4]--;
+    }
+    else
+    {
+        gTasks[taskId].data[4] = gTasks[taskId].data[3];
+        gTasks[taskId].data[1]--;
+        LoadPalette(&gUnknown_082FF018[gTasks[taskId].data[1]], 1, 16);
+    }
+}
+
+void sub_8031D34(u8 taskId, u8 a)
+{
+    u8 taskId2;
+
+    taskId2 = CreateTask(sub_8031CC8, 0);
+    gTasks[taskId2].data[0] = taskId;
+    gTasks[taskId2].data[1] = 8;
+    gTasks[taskId2].data[2] = 8;
+    gTasks[taskId2].data[3] = a;
+    gTasks[taskId2].data[4] = a;
+}
+
+void sub_8031D74(void)
+{
+    DrawMainMenuWindowBorder(&gUnknown_082FF080[1], 0xF3);
+    FillWindowPixelBuffer(1, 17);
+    PrintMenuTable(1, 2, gUnknown_082FF118);
+    InitMenuInUpperLeftCornerPlaySoundWhenAPressed(1, 2, 0);
+    PutWindowTilemap(1);
+    CopyWindowToVram(1, 3);
+}
+
+s8 sub_8031DB4(void)
+{
+    return ProcessMenuInputNoWrapAround();
+}
+
+void set_default_player_name(u8 nameId)
+{
+    const u8* name;
+    u8 i;
+
+    if (gSaveBlock2Ptr->playerGender == MALE)
+        name = gMalePresetNames[nameId];
+    else
+        name = gFemalePresetNames[nameId];
+    for (i = 0; i < 7; i++)
+        gSaveBlock2Ptr->playerName[i] = name[i];
+    gSaveBlock2Ptr->playerName[7] = 0xFF;
+}
+
+void CreateMainMenuErrorWindow(const u8* str)
+{
+    FillWindowPixelBuffer(7, 17);
+    PrintTextOnWindow(7, 1, str, 0, 1, 2, 0);
+    PutWindowTilemap(7);
+    CopyWindowToVram(7, 2);
+    DrawMainMenuWindowBorder(gUnknown_082FF070, MAIN_MENU_BORDER_TILE);
+    SetGpuReg(REG_OFFSET_WIN0H, 0x9E7);
+    SetGpuReg(REG_OFFSET_WIN0V, 0x719F);
+}
+
+void fmt_savegame(void)
+{
+    fmt_time();
+    fmt_pokedex();
+    fmt_player();
+    fmt_badges();
+}
+
+void fmt_time(void)
+{
+    StringExpandPlaceholders(gStringVar4, gText_ContinueMenuPlayer);
+    box_print(2, 1, 0, 17, gUnknown_082FF0E3, -1, gStringVar4);
+    box_print(2, 1, GetStringRightAlignXOffset(1, gSaveBlock2Ptr->playerName, 100), 17, gUnknown_082FF0E3, -1, gSaveBlock2Ptr->playerName);
+}
+
+void fmt_player(void)
+{
+    u8 str[0x20];
+    u8* ptr;
+
+    StringExpandPlaceholders(gStringVar4, gText_ContinueMenuTime);
+    box_print(2, 1, 0x6C, 17, gUnknown_082FF0E3, -1, gStringVar4);
+    ptr = ConvertIntToDecimalStringN(str, gSaveBlock2Ptr->playTimeHours, 0, 3);
+    *ptr = 0xF0;
+    ConvertIntToDecimalStringN(ptr + 1, gSaveBlock2Ptr->playTimeMinutes, 2, 2);
+    box_print(2, 1, GetStringRightAlignXOffset(1, str, 0xD0), 17, gUnknown_082FF0E3, -1, str);
+}
+
+void fmt_pokedex(void)
+{
+    u8 str[0x20];
+    u16 dexCount;
+
+    if (FlagGet(FLAG_SYS_POKEDEX_GET) == TRUE)
+    {
+        if (IsNationalPokedexEnabled())
+            dexCount = GetNationalPokedexCount(1);
+        else
+            dexCount = GetHoennPokedexCount(1);
+        StringExpandPlaceholders(gStringVar4, gText_ContinueMenuPokedex);
+        box_print(2, 1, 0, 33, gUnknown_082FF0E3, -1, gStringVar4);
+        ConvertIntToDecimalStringN(str, dexCount, 0, 3);
+        box_print(2, 1, GetStringRightAlignXOffset(1, str, 100), 33, gUnknown_082FF0E3, -1, str);
+    }
+}
+
+void fmt_badges(void)
+{
+    u8 str[0x20];
+    u8 badgeCount = 0;
+    u32 i;
+
+    for (i = FLAG_BADGE01_GET; i <= FLAG_BADGE08_GET; i++)
+    {
+        if (FlagGet(i))
+            badgeCount++;
+    }
+    StringExpandPlaceholders(gStringVar4, gText_ContinueMenuBadges);
+    box_print(2, 1, 0x6C, 33, gUnknown_082FF0E3, -1, gStringVar4);
+    ConvertIntToDecimalStringN(str, badgeCount, 2, 1);
+    box_print(2, 1, GetStringRightAlignXOffset(1, str, 0xD0), 33, gUnknown_082FF0E3, -1, str);
+}
+
+void LoadMainMenuWindowFrameTiles(u8 bgId, u16 tileOffset)
+{
+    LoadBgTiles(bgId, GetWindowFrameTilesPal(gSaveBlock2Ptr->optionsWindowFrameType)->tiles, 0x120, tileOffset);
+    LoadPalette(GetWindowFrameTilesPal(gSaveBlock2Ptr->optionsWindowFrameType)->pal, 32, 32);
+}
+
+void DrawMainMenuWindowBorder(const struct WindowTemplate *template, u16 baseTileNum)
+{
+    u16 r9 = 1 + baseTileNum;
+    u16 r10 = 2 + baseTileNum;
+    u16 sp18 = 3 + baseTileNum;
+    u16 spC = 5 + baseTileNum;
+    u16 sp10 = 6 + baseTileNum;
+    u16 sp14 = 7 + baseTileNum;
+    u16 r6 = 8 + baseTileNum;
+
+    FillBgTilemapBufferRect(template->priority, baseTileNum, template->tilemapLeft - 1, template->tilemapTop - 1, 1, 1, 2);
+    FillBgTilemapBufferRect(template->priority, r9, template->tilemapLeft, template->tilemapTop - 1, template->width, 1, 2);
+    FillBgTilemapBufferRect(template->priority, r10, template->tilemapLeft + template->width, template->tilemapTop - 1, 1, 1, 2);
+    FillBgTilemapBufferRect(template->priority, sp18, template->tilemapLeft - 1, template->tilemapTop, 1, template->height, 2);
+    FillBgTilemapBufferRect(template->priority, spC, template->tilemapLeft + template->width, template->tilemapTop, 1, template->height, 2);
+    FillBgTilemapBufferRect(template->priority, sp10, template->tilemapLeft - 1, template->tilemapTop + template->height, 1, 1, 2);
+    FillBgTilemapBufferRect(template->priority, sp14, template->tilemapLeft, template->tilemapTop + template->height, template->width, 1, 2);
+    FillBgTilemapBufferRect(template->priority, r6, template->tilemapLeft + template->width, template->tilemapTop + template->height, 1, 1, 2);
+    CopyBgTilemapBufferToVram(template->priority);
+}
+
+void sub_8032250(const struct WindowTemplate *template)
+{
+    FillBgTilemapBufferRect(template->priority, 0, template->tilemapLeft - 1, template->tilemapTop - 1, template->tilemapLeft + template->width + 1, template->tilemapTop + template->height + 1, 2);
+    CopyBgTilemapBufferToVram(template->priority);
+}
+
+void sub_8032298(u8 a, u8 b, u8 c, u8 d, u8 e, u8 unused)
+{
+    FillBgTilemapBufferRect(a, 0, b + 0xFF, c + 0xFF, d + 2, e + 2, 2);
+}
+
+void sub_80322E0(u8 windowId, u8 a)
+{
+    CallWindowFunction(windowId, sub_8032298);
+    FillWindowPixelBuffer(windowId, 0x11);
+    ClearWindowTilemap(windowId);
+    if (a == 1)
+        CopyWindowToVram(windowId, 3);
+}
+
+void sub_8032318(u8 a)
+{
+    u8 fontAttribute = GetFontAttribute(1, 6);
+    u8 fontAttribute2 = GetFontAttribute(1, 0);
+    u8 fontAttribute3 = GetFontAttribute(1, 1);
+    u8 windowAttribute = GetWindowAttribute(a, 3);
+    u8 windowAttribute2 = GetWindowAttribute(a, 4);
+
+    FillWindowPixelRect(a, fontAttribute, 0, 0, fontAttribute2 * windowAttribute, fontAttribute3 * windowAttribute2);
+    CopyWindowToVram(a, 2);
+}
+
+void sub_80323A0(struct TextSubPrinter *printer, u16 a)
+{
+    if (*(printer->current_text_offset - 2) == 8 && gUnknown_02022D04 == 0)
+    {
+        gUnknown_02022D04 = 1;
+        CreateTask(sub_8030A70, 0);
+    }
+}
+
+void sub_80323CC(u8 a, u8 b, u16 c, u16 d, u8 e, u8 f)
+{
+    struct WindowTemplate sp;
+
+    sp = sub_8198A50(0, a + 1, b + 1, 5, 4, f, d);
+    CreateYesNoMenu(&sp, c, e, 0);
+}
+
+void unknown_rbox_to_vram(u8 windowId, u8 a)
+{
+    CallWindowFunction(windowId, sub_8032474);
+    FillWindowPixelBuffer(windowId, 17);
+    PutWindowTilemap(windowId);
+    if (a == 1)
+        CopyWindowToVram(windowId, 3);
+}
+
+void sub_8032474 (u8 a, u8 b, u8 c, u8 d, u8 e, u8 f)
+{
+    FillBgTilemapBufferRect(a, 0xFD,  b-2,   c-1, 1,   1, f);
+    FillBgTilemapBufferRect(a, 0xFF,  b-1,   c-1, 1,   1, f);
+    FillBgTilemapBufferRect(a, 0x100, b,     c-1, d,   1, f);
+    FillBgTilemapBufferRect(a, 0x101, b+d-1, c-1, 1,   1, f);
+    FillBgTilemapBufferRect(a, 0x102, b+d,   c-1, 1,   1, f);
+    FillBgTilemapBufferRect(a, 0x103, b-2,   c,   1,   5, f);
+    FillBgTilemapBufferRect(a, 0x105, b-1,   c,   d+1, 5, f);
+    FillBgTilemapBufferRect(a, 0x106, b+d,   c,   1,   5, f);
+    FillBgTilemapBufferRect(a, BG_TILE_V_FLIP(0xFD), b-2,   c+e, 1,   1, f);
+    FillBgTilemapBufferRect(a, BG_TILE_V_FLIP(0xFF), b-1,   c+e, 1,   1, f);
+    FillBgTilemapBufferRect(a, BG_TILE_V_FLIP(0x100), b,     c+e, d-1, 1, f);
+    FillBgTilemapBufferRect(a, BG_TILE_V_FLIP(0x101), b+d-1, c+e, 1,   1, f);
+    FillBgTilemapBufferRect(a, BG_TILE_V_FLIP(0x102), b+d,   c+e, 1,   1, f);
+}
+
+void task_new_game_prof_birch_speech_part2_1(u8 taskId)
+{
+    if (gTasks[taskId].data[7]-- <= 0)
+    {
+        unknown_rbox_to_vram(0, 1);
+        gTasks[taskId].func = task_new_game_prof_birch_speech_part2_2;
+    }
+}
diff --git a/src/menu.c b/src/menu.c
index d06f950d3..b20ab5164 100644
--- a/src/menu.c
+++ b/src/menu.c
@@ -63,7 +63,7 @@ static EWRAM_DATA void *gUnknown_0203CDAC[0x20] = {NULL};
 const u16 gUnknown_0860F074[] = INCBIN_U16("graphics/interface/860F074.gbapal");
 static const u8 gUnknown_0860F094[] = { 8, 4, 1 };
 
-static const struct WindowTemplate gUnknown_0860F098[] = 
+static const struct WindowTemplate gUnknown_0860F098[] =
 {
     { 0x00, 0x02, 0x0F, 0x1B, 0x04, 0x0F, 0x194 },
     DUMMY_WIN_TEMPLATE
@@ -76,7 +76,7 @@ static const struct WindowTemplate gUnknown_0860F0A8 =
 
 const u16 gUnknown_0860F0B0[] = INCBIN_U16("graphics/interface/860F0B0.gbapal");
 const u8 gUnknown_0860F0D0[] = { 15, 1, 2 };
-const struct SomeUnkStruct_60F0D4 gUnknown_0860F0D4[] = 
+const struct SomeUnkStruct_60F0D4 gUnknown_0860F0D4[] =
 {
     { 12, 12, 0x00 },
     { 32, 12, 0x20 },
@@ -151,7 +151,7 @@ u16 sub_8197224(void)
 u16 AddTextPrinterParameterized(u8 windowId, u8 fontId, const u8 *str, u8 speed, void (*callback)(struct TextSubPrinter *, u16), u8 fgColor, u8 bgColor, u8 shadowColor)
 {
     struct TextSubPrinter printer;
-    
+
     printer.current_text_offset = str;
     printer.windowId = windowId;
     printer.fontId = fontId;
@@ -165,9 +165,9 @@ u16 AddTextPrinterParameterized(u8 windowId, u8 fontId, const u8 *str, u8 speed,
     printer.fgColor = fgColor;
     printer.bgColor = bgColor;
     printer.shadowColor = shadowColor;
-    
+
     gTextFlags.flag_1 = 0;
-    return AddTextPrinter(&printer, speed, callback); 
+    return AddTextPrinter(&printer, speed, callback);
 }
 
 void AddTextPrinterForMessage(bool8 allowSkippingDelayWithButtonPress)
@@ -234,7 +234,7 @@ void sub_819746C(u8 windowId, bool8 copyToVram)
 void DrawStandardFrame(u8 bg, u8 tilemapLeft, u8 tilemapTop, u8 width, u8 height, u8 paletteNum)
 {
     int i;
-    
+
     FillBgTilemapBufferRect(bg,
                             STD_WINDOW_BASE_TILE_NUM + 0,
                             tilemapLeft - 1,
@@ -256,7 +256,7 @@ void DrawStandardFrame(u8 bg, u8 tilemapLeft, u8 tilemapTop, u8 width, u8 height
                             1,
                             1,
                             STD_WINDOW_PALETTE_NUM);
-    
+
     for (i = tilemapTop; i < tilemapTop + height; i++)
     {
         FillBgTilemapBufferRect(bg,
@@ -274,7 +274,7 @@ void DrawStandardFrame(u8 bg, u8 tilemapLeft, u8 tilemapTop, u8 width, u8 height
                                 1,
                                 STD_WINDOW_PALETTE_NUM);
     }
-    
+
     FillBgTilemapBufferRect(bg,
                             STD_WINDOW_BASE_TILE_NUM + 6,
                             tilemapLeft - 1,
@@ -1941,7 +1941,7 @@ void box_print(u8 windowId, u8 fontId, u8 left, u8 top, const u8 *color, s8 spee
     printer.fgColor = color[1];
     printer.bgColor = color[0];
     printer.shadowColor = color[2];
-    
+
     AddTextPrinter(&printer, speed, NULL);
 }
 
@@ -1962,7 +1962,7 @@ void AddTextPrinterParameterized2(u8 windowId, u8 fontId, u8 left, u8 top, u8 le
     printer.fgColor = color[1];
     printer.bgColor = color[0];
     printer.shadowColor = color[2];
-    
+
     AddTextPrinter(&printer, speed, NULL);
 }
 
@@ -2373,14 +2373,14 @@ void sub_819A344(u8 a0, u8 *a1, u8 a2)
     s32 flagCount;
     u8 *endOfString;
     u8 *string = a1;
-    
+
     *(string++) = EXT_CTRL_CODE_BEGIN;
     *(string++) = EXT_CTRL_CODE_COLOR;
     *(string++) = a2;
     *(string++) = EXT_CTRL_CODE_BEGIN;
     *(string++) = EXT_CTRL_CODE_SHADOW;
     *(string++) = a2 + 1;
-    
+
     switch (a0)
     {
         case 0:
@@ -2388,9 +2388,9 @@ void sub_819A344(u8 a0, u8 *a1, u8 a2)
             break;
         case 1:
             if (IsNationalPokedexEnabled())
-                string = ConvertIntToDecimalStringN(string, pokedex_count(1), 0, 3);
+                string = ConvertIntToDecimalStringN(string, GetNationalPokedexCount(1), 0, 3);
             else
-                string = ConvertIntToDecimalStringN(string, sub_80C0844(1), 0, 3);
+                string = ConvertIntToDecimalStringN(string, GetHoennPokedexCount(1), 0, 3);
             *string = EOS;
             break;
         case 2:
diff --git a/src/naming_screen.c b/src/naming_screen.c
index 47d8b8ad1..be306c765 100644
--- a/src/naming_screen.c
+++ b/src/naming_screen.c
@@ -1798,22 +1798,22 @@ static bool8 sub_80E503C(u8 character)
 
 static void sub_80E5074(void)
 {
-    DoNamingScreen(0, gSaveBlock2Ptr->playerName, gSaveBlock2Ptr->playerGender, 0, 0, sub_8086194);
+    DoNamingScreen(0, gSaveBlock2Ptr->playerName, gSaveBlock2Ptr->playerGender, 0, 0, CB2_ReturnToFieldWithOpenMenu);
 }
 
 static void sub_80E509C(void)
 {
-    DoNamingScreen(1, gSaveBlock2Ptr->playerName, gSaveBlock2Ptr->playerGender, 0, 0, sub_8086194);
+    DoNamingScreen(1, gSaveBlock2Ptr->playerName, gSaveBlock2Ptr->playerGender, 0, 0, CB2_ReturnToFieldWithOpenMenu);
 }
 
 static void sub_80E50C4(void)
 {
-    DoNamingScreen(2, gSaveBlock2Ptr->playerName, gSaveBlock2Ptr->playerGender, 0, 0, sub_8086194);
+    DoNamingScreen(2, gSaveBlock2Ptr->playerName, gSaveBlock2Ptr->playerGender, 0, 0, CB2_ReturnToFieldWithOpenMenu);
 }
 
 static void sub_80E50EC(void)
 {
-    DoNamingScreen(3, gSaveBlock2Ptr->playerName, gSaveBlock2Ptr->playerGender, 0, 0, sub_8086194);
+    DoNamingScreen(3, gSaveBlock2Ptr->playerName, gSaveBlock2Ptr->playerGender, 0, 0, CB2_ReturnToFieldWithOpenMenu);
 }
 
 //--------------------------------------------------
diff --git a/src/overworld.c b/src/overworld.c
index c538595f2..6ee338cb8 100644
--- a/src/overworld.c
+++ b/src/overworld.c
@@ -1,19 +1,3185 @@
-
-// Includes
 #include "global.h"
+#include "overworld.h"
+#include "main.h"
+#include "battle_setup.h"
+#include "berry.h"
+// #include "cable_club.h"
+#include "clock.h"
+#include "event_data.h"
+#include "field_camera.h"
+#include "field_control_avatar.h"
+#include "field_effect.h"
+#include "field_fadetransition.h"
+#include "field_ground_effect.h"
+#include "field_map_obj.h"
+#include "field_map_obj_helpers.h"
+#include "field_message_box.h"
+#include "field_player_avatar.h"
+#include "field_screen_effect.h"
+// #include "field_special_scene.h"
+#include "field_specials.h"
+#include "field_tasks.h"
+#include "field_weather.h"
+#include "fieldmap.h"
+// #include "fldeff_flash.h"
+#include "heal_location.h"
+#include "link.h"
+#include "load_save.h"
+#include "main.h"
+#include "m4a.h"
+#include "constants/maps.h"
+#include "map_name_popup.h"
+#include "menu.h"
+#include "metatile_behavior.h"
+#include "new_game.h"
+#include "palette.h"
+#include "play_time.h"
+#include "random.h"
+#include "roamer.h"
+// #include "rotating_gate.h"
+#include "safari_zone.h"
+#include "script.h"
+// #include "script_pokemon_80C4.h"
+#include "secret_base.h"
+#include "constants/songs.h"
+#include "sound.h"
+#include "constants/species.h"
+#include "start_menu.h"
+#include "task.h"
+// #include "tileset_anim.h"
+#include "time_events.h"
+#include "tv.h"
+#include "scanline_effect.h"
+#include "wild_encounter.h"
+#include "bg.h"
+#include "money.h"
+#include "save_location.h"
+#include "constants/abilities.h"
+#include "malloc.h"
+#include "gpu_regs.h"
+#include "link_rfu.h"
+
+// event scripts
+extern const u8 EventScript_WhiteOut[];
+extern const u8 EventScript_271862[];
+extern const u8 EventScript_277513[];
+extern const u8 EventScript_TradeRoom_TooBusyToNotice[];
+extern const u8 EventScript_TradeRoom_ReadTrainerCard1[];
+extern const u8 EventScript_TradeRoom_ReadTrainerCard2[];
+extern const u8 gUnknown_08277388[];
+extern const u8 gUnknown_082773A3[];
+extern const u8 gUnknown_082773BE[];
+extern const u8 gUnknown_082773D9[];
+extern const u8 gUnknown_0827741D[];
+extern const u8 gUnknown_08277432[];
+extern const u8 gUnknown_08277447[];
+extern const u8 gUnknown_0827745C[];
+extern const u8 gUnknown_08277374[];
+extern const u8 gUnknown_0827737E[];
+extern const u8 gUnknown_082773FF[];
+extern const u8 gUnknown_082773F5[];
+extern const u8 gUnknown_082774EF[];
+extern const u8 gUnknown_08277509[];
+
+// vars
+extern const struct MapData *const gMapAttributes[];
+extern const struct MapHeader *const *const gMapGroups[];
+extern const s32 gMaxFlashLevel;
+extern const u16 gUnknown_82EC7C4[];
+
+extern u16 gSaveFileStatus;
+extern u16 gUnknown_03005DA8;
+extern u8 *gUnknown_03005DA0;
+extern u8 *gUnknown_03005D9C;
+extern u8 *gUnknown_03005DA4;
+extern bool8 (*gUnknown_03005DB0)(void);
+extern u8 gUnknown_03005DB4;
+extern u8 gFieldLinkPlayerCount;
+extern MainCallback gFieldCallback;
+
+// functions
+extern void HealPlayerParty(void);
+extern void move_tilemap_camera_to_upper_left_corner(void);
+extern void cur_mapheader_run_tileset_funcs_after_some_cpuset(void);
+extern void DrawWholeMapView(void);
+extern void copy_map_tileset1_tileset2_to_vram(const struct MapData *);
+extern void apply_map_tileset1_tileset2_palette(const struct MapData *);
+extern void ResetCyclingRoadChallengeData(void);
+extern void ApplyNewEncryptionKeyToWord(u32 *word, u32 newKey);
+extern void mapheader_run_script_with_tag_x5(void);
+extern void ResetFieldTasksArgs(void);
+extern void sub_80A0A2C(void);
+extern void not_trainer_hill_battle_pyramid(void);
+extern void apply_map_tileset2_palette(const struct MapData *);
+extern void copy_map_tileset2_to_vram_2(const struct MapData *);
+extern void prev_quest_postbuffer_cursor_backup_reset(void);
+extern void ShowMapNamePopup(void);
+extern bool32 InTrainerHill(void);
+extern bool32 sub_808651C(void);
+extern bool8 sub_80AF6A4(void);
+extern bool8 sub_81A9E6C(void);
+extern bool8 sub_80E909C(void);
+extern void sub_81AA1D8(void);
+extern void c2_change_map(void);
+extern void sub_81D5DF8(void);
+extern void sub_80EB218(void);
+extern void sub_81BE72C(void);
+extern void sub_80AF3C8(void);
+extern void sub_81971F4(void);
+extern void sub_808B578(void);
+extern void sub_80AF314(void);
+extern void sub_80AF214(void);
+extern void sub_80AF188(void);
+extern void door_upload_tiles(void);
+extern void RotatingGate_InitPuzzleAndGraphics(void);
+extern void sub_80AF168(void);
+extern void sub_80AF3C8(void);
+extern void ExecuteTruckSequence(void);
+extern void sub_80A0A38(void);
+extern void trainer_hill_map_load_related(void);
+extern void sub_8087D74(void);
+extern void battle_pyramid_map_load_related(u8);
+extern void sub_80B00E8(u8);
+extern void UpdateTVScreensOnMap(u32, u32);
+extern void sub_80E9238(u8);
+extern void sub_81A3908(void);
+extern void sub_81AA2F8(void);
+extern void sub_8195E10(void);
+extern void sub_80EDB44(void);
+extern void sub_81D64C0(void);
+extern void sub_81BE6AC(void);
+extern void sub_8098128(void);
+extern void copy_map_tileset1_to_vram(const struct MapData *);
+extern void copy_map_tileset2_to_vram(const struct MapData *);
+extern void FieldUpdateBgTilemapScroll(void);
+extern void TransferTilesetAnimsBuffer(void);
+extern bool32 sub_81D5F48(void);
+extern u8 GetCurrentTrainerHillMapId(void);
+extern bool8 warp0_in_pokecenter(void);
+extern void dp13_810BB8C(void);
+extern void FieldEffectActiveListClear(void);
+extern void SetUpFieldTasks(void);
+extern void sub_81BE6B8(void);
+extern void sub_80AAFA4(void);
+extern void sub_809FA9C(void);
+extern void sub_80AEE84(void);
+extern void mapldr_default(void);
+extern void npc_paltag_set_load(u8);
+extern void sub_8088B3C(u16, u16);
+extern bool32 sub_800F0B8(void);
+extern bool32 sub_8009F3C(void);
+extern void sub_8010198(void);
+extern u32 sub_800B4DC(void);
+extern bool32 sub_80B39D4(u8);
+extern const u8* sub_809C2C8(struct MapPosition *a1, u8, u8);
+extern u8 *sub_809D0F4(void*);
+extern u8 sub_808BD6C(u8);
+extern u8 sub_808BD7C(u8);
+extern void sub_80979D4(struct Sprite*, u8);
+
+// this file's functions
+static void Overworld_ResetStateAfterWhiteOut(void);
+static void c2_80567AC(void);
+static void CB2_LoadMap2(void);
+static void VBlankCB_Field(void);
+static void SpriteCB_LinkPlayer(struct Sprite *sprite);
+static void ChooseAmbientCrySpecies(void);
+static void do_load_map_stuff_loop(u8 *state);
+static bool32 map_loading_iteration_3(u8 *state);
+static bool32 sub_8086638(u8 *state);
+static bool32 load_map_stuff(u8 *state, u32);
+static bool32 map_loading_iteration_2_link(u8 *state);
+static void mli4_mapscripts_and_other(void);
+static void map_loading_lcd_reset(void);
+static u8 sub_8087858(u8);
+static u16 sub_80871C0(u32 a1);
+static void sub_80867C8(void);
+static void sub_80867D8(void);
+static void sub_8086AE4(void);
+static void sub_80869DC(void);
+static void sub_8086B14(void);
+static void sub_8086AAC(void);
+static void sub_8086988(bool32 arg0);
+static void sub_8086A80(void);
+static void sub_8086A68(void);
+static void sub_8086860(void);
+static void sub_8086AC8(void);
+static void sub_8086B9C(void);
+static void sub_8086C40(void);
+static void sub_8086C90(void);
+static void sub_8086FA0(u16);
+static void sub_8086F38(u16*, s32);
+static u8 npc_something3(u8 a1, u8 a2);
+static u8 LinkPlayerDetectCollision(u8 selfMapObjId, u8 a2, s16 x, s16 y);
+static void CreateLinkPlayerSprite(u8 linkPlayerId, u8 gameVersion);
+static void sub_8087878(u8 linkPlayerId, u16 *x, u16 *y);
+static u8 sub_80878A0(u8 linkPlayerId);
+static u8 sub_80878C0(u8 linkPlayerId);
+static s32 sub_80878E4(u8 linkPlayerId);
+static u8 GetLinkPlayerIdAt(s16 x, s16 y);
+static void sub_808796C(u8 linkPlayerId, u8 a2);
+static void ZeroMapObject(struct MapObject *mapObj);
+static void SpawnLinkPlayerMapObject(u8 linkPlayerId, s16 x, s16 y, u8 a4);
+static void InitLinkPlayerMapObjectPos(struct MapObject *mapObj, s16 x, s16 y);
+static void sub_80877DC(u8 linkPlayerId, u8 a2);
+static void sub_808780C(u8 linkPlayerId);
+static u8 sub_8087858(u8 linkPlayerId);
+static void sub_8087584(void);
+static u32 sub_8087690(void);
+static void ZeroLinkPlayerMapObject(struct LinkPlayerMapObject *linkPlayerMapObj);
+static const u8 *sub_80873B4(struct UnkStruct_8054FF8 *a1);
+static u16 sub_8087480(const u8 *script);
+static void sub_8087510(void);
+static void sub_808751C(void);
+static void sub_8087530(const u8 *script);
+static void sub_808754C(void);
+static void sub_8087568(const u8 *script);
+static void sub_80872D8(s32 linkPlayerId, s32 a2, struct UnkStruct_8054FF8 *a3);
+static bool32 sub_8087340(struct UnkStruct_8054FF8 *a1);
+static bool32 sub_8087358(struct UnkStruct_8054FF8 *a1);
+static u8 *sub_8087370(struct UnkStruct_8054FF8 *a1);
+static bool32 sub_8087388(struct UnkStruct_8054FF8 *a1);
+static const u8 *sub_80873B4(struct UnkStruct_8054FF8 *a1);
+static u16 sub_808711C(u32);
+static u16 sub_8087140(u32);
+static void sub_808709C(u16 *a1);
+static u16 sub_80870B0(u32 a1);
+static u16 sub_80870F8(u32 a1);
+static u16 sub_8087068(u16 a1);
+static void c1_link_related(void);
+static void c1_link_related_func_set(u16 (*func)(u32));
+static void SetFieldVBlankCallback(void);
+static void FieldClearVBlankHBlankCallbacks(void);
+static void sub_8085810(void);
+static u8 sub_808532C(struct UnkPlayerStruct *playerStruct, u16 a2, u8 a3);
+static u8 sub_808538C(struct UnkPlayerStruct *playerStruct, u8 a2, u16 a3, u8 a4);
+static u16 cur_mapdata_block_role_at_screen_center_acc_to_sav1(void);
+
+// IWRAM bss vars
+IWRAM_DATA static void *sUnknown_03000E0C;
+IWRAM_DATA static u8 sUnknown_03000E10[4];
+IWRAM_DATA static u16 (*sUnknown_03000E14)(u32);
+IWRAM_DATA static u8 sUnknown_03000E18;
+IWRAM_DATA static u8 sUnknown_03000E19;
+IWRAM_DATA static u32 sUnusedVar;
+
+// EWRAM vars
+EWRAM_DATA static u8 sUnknown_020322D8 = 0;
+EWRAM_DATA struct WarpData gUnknown_020322DC = {0};
+EWRAM_DATA static struct WarpData sWarpDestination = {0};  // new warp position
+EWRAM_DATA static struct WarpData sUnknown_020322EC = {0};
+EWRAM_DATA static struct WarpData sUnknown_020322F4 = {0};
+EWRAM_DATA static u16 sLastMapSectionId = 0;
+EWRAM_DATA static struct UnkPlayerStruct sUnknown_02032300 = {0};
+EWRAM_DATA static u16 sAmbientCrySpecies = 0;
+EWRAM_DATA static bool8 sIsAmbientCryWaterMon = FALSE;
+EWRAM_DATA struct LinkPlayerMapObject gLinkPlayerMapObjects[4] = {0};
+
+// const rom data
+static const struct WarpData sDummyWarpData =
+{
+    .mapGroup = -1,
+    .mapNum = -1,
+    .warpId = -1,
+    .x = -1,
+    .y = -1,
+};
+
+static const u8 sUnusedData[] =
+{
+    0xB0, 0x04, 0x00, 0x00,
+    0x10, 0x0E, 0x00, 0x00,
+    0xB0, 0x04, 0x00, 0x00,
+    0x60, 0x09, 0x00, 0x00,
+    0x32, 0x00, 0x00, 0x00,
+    0x50, 0x00, 0x00, 0x00,
+    0xD4, 0xFF, 0xFF, 0xFF,
+    0x2C, 0x00, 0x00, 0x00,
+};
+
+const struct UCoords32 gUnknown_08339D64[] =
+{
+    { 0,  0},
+    { 0,  1},
+    { 0, -1},
+    {-1,  0},
+    { 1,  0},
+    {-1,  1},
+    { 1,  1},
+    {-1, -1},
+    { 1, -1},
+};
+
+static const struct BgTemplate gUnknown_08339DAC[] =
+{
+    {
+        .bg = 0,
+        .charBaseIndex = 2,
+        .mapBaseIndex = 31,
+        .screenSize = 0,
+        .paletteMode = 0,
+        .priority = 0,
+        .baseTile = 0
+    },
+    {
+        .bg = 1,
+        .charBaseIndex = 0,
+        .mapBaseIndex = 29,
+        .screenSize = 0,
+        .paletteMode = 0,
+        .priority = 1,
+        .baseTile = 0
+    },
+    {
+        .bg = 2,
+        .charBaseIndex = 0,
+        .mapBaseIndex = 28,
+        .screenSize = 0,
+        .paletteMode = 0,
+        .priority = 2,
+        .baseTile = 0
+    },
+    {
+        .bg = 3,
+        .charBaseIndex = 0,
+        .mapBaseIndex = 30,
+        .screenSize = 0,
+        .paletteMode = 0,
+        .priority = 3,
+        .baseTile = 0
+    }
+};
+
+static const struct ScanlineEffectParams gUnknown_08339DBC =
+{
+    (void *)REG_ADDR_WIN0H,
+    ((DMA_ENABLE | DMA_START_HBLANK | DMA_REPEAT | DMA_DEST_RELOAD) << 16) | 1,
+    1,
+    0,
+};
+
+static u8 sub_80879D8(struct LinkPlayerMapObject *, struct MapObject *, u8);
+static u8 sub_80879F8(struct LinkPlayerMapObject *, struct MapObject *, u8);
+static u8 sub_80879FC(struct LinkPlayerMapObject *, struct MapObject *, u8);
+
+static u8 (*const gUnknown_08339DC8[])(struct LinkPlayerMapObject *, struct MapObject *, u8) =
+{
+    sub_80879D8,
+    sub_80879F8,
+    sub_80879FC,
+};
+
+static u8 sub_8087A1C(struct LinkPlayerMapObject *, struct MapObject *, u8);
+static u8 sub_8087A20(struct LinkPlayerMapObject *, struct MapObject *, u8);
+static u8 sub_8087A88(struct LinkPlayerMapObject *, struct MapObject *, u8);
+
+static u8 (*const gUnknown_08339DD4[])(struct LinkPlayerMapObject *, struct MapObject *, u8) =
+{
+    sub_8087A1C,
+    sub_8087A20,
+    sub_8087A20,
+    sub_8087A20,
+    sub_8087A20,
+    sub_8087A1C,
+    sub_8087A1C,
+    sub_8087A88,
+    sub_8087A88,
+    sub_8087A88,
+    sub_8087A88,
+};
+
+static void sub_8087AA0(struct LinkPlayerMapObject *, struct MapObject *);
+static void sub_8087AA8(struct LinkPlayerMapObject *, struct MapObject *);
+
+static void (*const gUnknown_08339E00[])(struct LinkPlayerMapObject *, struct MapObject *) =
+{
+    sub_8087AA0,
+    sub_8087AA8,
+};
+
+// code
+void DoWhiteOut(void)
+{
+    ScriptContext2_RunNewScript(EventScript_WhiteOut);
+    SetMoney(&gSaveBlock1Ptr->money, GetMoney(&gSaveBlock1Ptr->money) / 2);
+    HealPlayerParty();
+    Overworld_ResetStateAfterWhiteOut();
+    Overworld_SetWarpDestToLastHealLoc();
+    warp_in();
+}
+
+void Overworld_ResetStateAfterFly(void)
+{
+    player_avatar_init_params_reset();
+    FlagClear(FLAG_SYS_CYCLING_ROAD);
+    FlagClear(FLAG_SYS_CRUISE_MODE);
+    FlagClear(FLAG_SYS_SAFARI_MODE);
+    FlagClear(FLAG_SYS_USE_STRENGTH);
+    FlagClear(FLAG_SYS_USE_FLASH);
+}
+
+void Overworld_ResetStateAfterTeleport(void)
+{
+    player_avatar_init_params_reset();
+    FlagClear(FLAG_SYS_CYCLING_ROAD);
+    FlagClear(FLAG_SYS_CRUISE_MODE);
+    FlagClear(FLAG_SYS_SAFARI_MODE);
+    FlagClear(FLAG_SYS_USE_STRENGTH);
+    FlagClear(FLAG_SYS_USE_FLASH);
+    ScriptContext2_RunNewScript(EventScript_271862);
+}
+
+void Overworld_ResetStateAfterDigEscRope(void)
+{
+    player_avatar_init_params_reset();
+    FlagClear(FLAG_SYS_CYCLING_ROAD);
+    FlagClear(FLAG_SYS_CRUISE_MODE);
+    FlagClear(FLAG_SYS_SAFARI_MODE);
+    FlagClear(FLAG_SYS_USE_STRENGTH);
+    FlagClear(FLAG_SYS_USE_FLASH);
+}
+
+static void Overworld_ResetStateAfterWhiteOut(void)
+{
+    player_avatar_init_params_reset();
+    FlagClear(FLAG_SYS_CYCLING_ROAD);
+    FlagClear(FLAG_SYS_CRUISE_MODE);
+    FlagClear(FLAG_SYS_SAFARI_MODE);
+    FlagClear(FLAG_SYS_USE_STRENGTH);
+    FlagClear(FLAG_SYS_USE_FLASH);
+    if (VarGet(VAR_0x4039) == 1)
+    {
+        VarSet(VAR_0x4039, 0);
+        VarSet(VAR_0x4037, 0);
+    }
+}
+
+static void sub_8084788(void)
+{
+    FlagClear(FLAG_SYS_SAFARI_MODE);
+    ChooseAmbientCrySpecies();
+    ResetCyclingRoadChallengeData();
+    UpdateLocationHistoryForRoamer();
+    RoamerMoveToOtherLocationSet();
+}
+
+void ResetGameStats(void)
+{
+    s32 i;
+
+    for (i = 0; i < NUM_GAME_STATS; i++)
+        SetGameStat(i, 0);
+}
+
+void IncrementGameStat(u8 index)
+{
+    if (index < NUM_USED_GAME_STATS)
+    {
+        u32 statVal = GetGameStat(index);
+        if (statVal < 0xFFFFFF)
+            statVal++;
+        else
+            statVal = 0xFFFFFF;
+
+        SetGameStat(index, statVal);
+    }
+}
+
+u32 GetGameStat(u8 index)
+{
+    if (index >= NUM_USED_GAME_STATS)
+        return 0;
+
+    return gSaveBlock1Ptr->gameStats[index] ^ gSaveBlock2Ptr->encryptionKey;
+}
+
+void SetGameStat(u8 index, u32 value)
+{
+    if (index < NUM_USED_GAME_STATS)
+        gSaveBlock1Ptr->gameStats[index] = value ^ gSaveBlock2Ptr->encryptionKey;
+}
+
+void ApplyNewEncryptionKeyToGameStats(u32 newKey)
+{
+    u8 i;
+
+    for (i = 0; i < NUM_GAME_STATS; i++)
+        ApplyNewEncryptionKeyToWord(&gSaveBlock1Ptr->gameStats[i], newKey);
+}
+
+void LoadMapObjTemplatesFromHeader(void)
+{
+    // Clear map object templates
+    CpuFill32(0, gSaveBlock1Ptr->mapObjectTemplates, sizeof(gSaveBlock1Ptr->mapObjectTemplates));
+
+    // Copy map header events to save block
+    CpuCopy32(gMapHeader.events->mapObjects,
+              gSaveBlock1Ptr->mapObjectTemplates,
+              gMapHeader.events->mapObjectCount * sizeof(struct MapObjectTemplate));
+}
+
+void LoadSaveblockMapObjScripts(void)
+{
+    struct MapObjectTemplate *mapHeaderObjTemplates = gMapHeader.events->mapObjects;
+    struct MapObjectTemplate *savObjTemplates = gSaveBlock1Ptr->mapObjectTemplates;
+    s32 i;
+
+    for (i = 0; i < 64; i++)
+        savObjTemplates[i].script = mapHeaderObjTemplates[i].script;
+}
+
+void Overworld_SetMapObjTemplateCoords(u8 localId, s16 x, s16 y)
+{
+    s32 i;
+    struct MapObjectTemplate *savObjTemplates = gSaveBlock1Ptr->mapObjectTemplates;
+
+    for (i = 0; i < 64; i++)
+    {
+        struct MapObjectTemplate *mapObjectTemplate = &savObjTemplates[i];
+        if (mapObjectTemplate->localId == localId)
+        {
+            mapObjectTemplate->x = x;
+            mapObjectTemplate->y = y;
+            return;
+        }
+    }
+}
+
+void Overworld_SetMapObjTemplateMovementType(u8 localId, u8 movementType)
+{
+    s32 i;
+
+    struct MapObjectTemplate *savObjTemplates = gSaveBlock1Ptr->mapObjectTemplates;
+    for (i = 0; i < 64; i++)
+    {
+        struct MapObjectTemplate *mapObjectTemplate = &savObjTemplates[i];
+        if (mapObjectTemplate->localId == localId)
+        {
+            mapObjectTemplate->movementType = movementType;
+            return;
+        }
+    }
+}
+
+static void mapdata_load_assets_to_gpu_and_full_redraw(void)
+{
+    move_tilemap_camera_to_upper_left_corner();
+    copy_map_tileset1_tileset2_to_vram(gMapHeader.mapData);
+    apply_map_tileset1_tileset2_palette(gMapHeader.mapData);
+    DrawWholeMapView();
+    cur_mapheader_run_tileset_funcs_after_some_cpuset();
+}
+
+const struct MapData *get_mapdata_header(void)
+{
+    u16 mapDataId = gSaveBlock1Ptr->mapDataId;
+    if (mapDataId)
+        return gMapAttributes[mapDataId - 1];
+    return NULL;
+}
+
+void ApplyCurrentWarp(void)
+{
+    gUnknown_020322DC = gSaveBlock1Ptr->location;
+    gSaveBlock1Ptr->location = sWarpDestination;
+    sUnknown_020322EC = sDummyWarpData;
+    sUnknown_020322F4 = sDummyWarpData;
+}
+
+void set_warp2_warp3_to_neg_1(void)
+{
+    sUnknown_020322EC = sDummyWarpData;
+    sUnknown_020322F4 = sDummyWarpData;
+}
+
+void SetWarpData(struct WarpData *warp, s8 mapGroup, s8 mapNum, s8 warpId, s8 x, s8 y)
+{
+    warp->mapGroup = mapGroup;
+    warp->mapNum = mapNum;
+    warp->warpId = warpId;
+    warp->x = x;
+    warp->y = y;
+}
+
+bool32 warp_data_is_not_neg_1(struct WarpData *warp)
+{
+    if (warp->mapGroup != -1)
+        return FALSE;
+    else if (warp->mapNum != -1)
+        return FALSE;
+    else if (warp->warpId != -1)
+        return FALSE;
+    else if (warp->x != -1)
+        return FALSE;
+    else if (warp->y != -1)
+        return FALSE;
+    else
+        return TRUE;
+}
+
+const struct MapHeader *Overworld_GetMapHeaderByGroupAndId(u16 mapGroup, u16 mapNum)
+{
+    return gMapGroups[mapGroup][mapNum];
+}
+
+const struct MapHeader *warp1_get_mapheader(void)
+{
+    return Overworld_GetMapHeaderByGroupAndId(sWarpDestination.mapGroup, sWarpDestination.mapNum);
+}
+
+void set_current_map_header_from_sav1_save_old_name(void)
+{
+    sLastMapSectionId = gMapHeader.regionMapSectionId;
+    gMapHeader = *Overworld_GetMapHeaderByGroupAndId(gSaveBlock1Ptr->location.mapGroup, gSaveBlock1Ptr->location.mapNum);
+    gSaveBlock1Ptr->mapDataId = gMapHeader.mapDataId;
+    gMapHeader.mapData = get_mapdata_header();
+}
+
+void LoadSaveblockMapHeader(void)
+{
+    gMapHeader = *Overworld_GetMapHeaderByGroupAndId(gSaveBlock1Ptr->location.mapGroup, gSaveBlock1Ptr->location.mapNum);
+    gMapHeader.mapData = get_mapdata_header();
+}
+
+void update_camera_pos_from_warpid(void)
+{
+    if (gSaveBlock1Ptr->location.warpId >= 0 && gSaveBlock1Ptr->location.warpId < gMapHeader.events->warpCount)
+    {
+        gSaveBlock1Ptr->pos.x = gMapHeader.events->warps[gSaveBlock1Ptr->location.warpId].x;
+        gSaveBlock1Ptr->pos.y = gMapHeader.events->warps[gSaveBlock1Ptr->location.warpId].y;
+    }
+    else if (gSaveBlock1Ptr->location.x >= 0 && gSaveBlock1Ptr->location.y >= 0)
+    {
+        gSaveBlock1Ptr->pos.x = gSaveBlock1Ptr->location.x;
+        gSaveBlock1Ptr->pos.y = gSaveBlock1Ptr->location.y;
+    }
+    else
+    {
+        gSaveBlock1Ptr->pos.x = gMapHeader.mapData->width / 2;
+        gSaveBlock1Ptr->pos.y = gMapHeader.mapData->height / 2;
+    }
+}
+
+void warp_in(void)
+{
+    ApplyCurrentWarp();
+    set_current_map_header_from_sav1_save_old_name();
+    update_camera_pos_from_warpid();
+}
+
+void Overworld_SetWarpDestination(s8 mapGroup, s8 mapNum, s8 warpId, s8 x, s8 y)
+{
+    SetWarpData(&sWarpDestination, mapGroup, mapNum, warpId, x, y);
+}
+
+void warp1_set_2(s8 mapGroup, s8 mapNum, s8 warpId)
+{
+    Overworld_SetWarpDestination(mapGroup, mapNum, warpId, -1, -1);
+}
+
+void saved_warp2_set(s32 unused, s8 mapGroup, s8 mapNum, s8 warpId)
+{
+    SetWarpData(&gSaveBlock1Ptr->warp2, mapGroup, mapNum, warpId, gSaveBlock1Ptr->pos.x, gSaveBlock1Ptr->pos.y);
+}
+
+void saved_warp2_set_2(s32 unused, s8 mapGroup, s8 mapNum, s8 warpId, s8 x, s8 y)
+{
+    SetWarpData(&gSaveBlock1Ptr->warp2, mapGroup, mapNum, warpId, x, y);
+}
+
+void copy_saved_warp2_bank_and_enter_x_to_warp1(u8 unused)
+{
+    sWarpDestination = gSaveBlock1Ptr->warp2;
+}
+
+void sub_8084CCC(u8 a1)
+{
+    const struct HealLocation *warp = GetHealLocationPointer(a1);
+
+    if (warp)
+        Overworld_SetWarpDestination(warp->group, warp->map, -1, warp->x, warp->y);
+}
+
+void Overworld_SetWarpDestToLastHealLoc(void)
+{
+    sWarpDestination = gSaveBlock1Ptr->lastHealLocation;
+}
+
+void Overworld_SetHealLocationWarp(u8 healLocationId)
+{
+    const struct HealLocation *healLocation = GetHealLocationPointer(healLocationId);
+
+    if (healLocation != NULL)
+        SetWarpData(&gSaveBlock1Ptr->lastHealLocation, healLocation->group, healLocation->map, -1, healLocation->x, healLocation->y);
+}
+
+void sub_8084D5C(s16 a1, s16 a2)
+{
+    u8 currMapType = Overworld_GetMapTypeOfSaveblockLocation();
+    u8 destMapType = GetMapTypeByGroupAndId(sWarpDestination.mapGroup, sWarpDestination.mapNum);
+    if (is_light_level_1_2_3_5_or_6(currMapType) && is_light_level_1_2_3_5_or_6(destMapType) != TRUE)
+        sub_8084DD4(gSaveBlock1Ptr->location.mapGroup, gSaveBlock1Ptr->location.mapNum, -1, a1 - 7, a2 - 6);
+}
+
+void sub_8084DD4(s8 mapGroup, s8 mapNum, s8 warpId, s8 x, s8 y)
+{
+    SetWarpData(&gSaveBlock1Ptr->warp4, mapGroup, mapNum, warpId, x, y);
+}
+
+void sub_8084E14(void)
+{
+    sWarpDestination = gSaveBlock1Ptr->warp4;
+}
+
+void sub_8084E2C(s8 mapGroup, s8 mapNum, s8 warpId, s8 x, s8 y)
+{
+    SetWarpData(&sUnknown_020322EC, mapGroup, mapNum, warpId, x, y);
+}
+
+void warp1_set_to_warp2(void)
+{
+    sWarpDestination = sUnknown_020322EC;
+}
+
+void sub_8084E80(s8 mapGroup, s8 mapNum, s8 warpId, s8 x, s8 y)
+{
+    SetWarpData(&sUnknown_020322F4, mapGroup, mapNum, warpId, x, y);
+}
+
+void sub_8084EBC(s16 x, s16 y)
+{
+    if (warp_data_is_not_neg_1(&sUnknown_020322F4) == TRUE)
+        sWarpDestination = gUnknown_020322DC;
+    else
+        Overworld_SetWarpDestination(sUnknown_020322F4.mapGroup, sUnknown_020322F4.mapNum, -1, x, y);
+}
+
+void warp1_set_to_sav1w(void)
+{
+    sWarpDestination = gSaveBlock1Ptr->warp1;
+}
+
+void sub_8084F2C(s8 mapGroup, s8 mapNum, s8 warpId, s8 x, s8 y)
+{
+    SetWarpData(&gSaveBlock1Ptr->warp1, mapGroup, mapNum, warpId, x, y);
+}
+
+void sub_8084F6C(u8 a1)
+{
+    const struct HealLocation *warp = GetHealLocationPointer(a1);
+    if (warp)
+        SetWarpData(&gSaveBlock1Ptr->warp1, warp->group, warp->map, -1, warp->x, warp->y);
+}
+
+void sub_8084FAC(void)
+{
+    gSaveBlock1Ptr->warp1 = gSaveBlock1Ptr->warp2;
+}
+
+const struct MapConnection *GetMapConnection(u8 dir)
+{
+    s32 i;
+    s32 count = gMapHeader.connections->count;
+    const struct MapConnection *connection = gMapHeader.connections->connections;
+
+    if (connection == NULL)
+        return NULL;
+
+    for(i = 0; i < count; i++, connection++)
+        if (connection->direction == dir)
+            return connection;
+
+    return NULL;
+}
+
+bool8 sub_8084FF8(u8 dir, u16 x, u16 y)
+{
+    const struct MapConnection *connection = GetMapConnection(dir);
+
+    if (connection != NULL)
+    {
+        Overworld_SetWarpDestination(connection->mapGroup, connection->mapNum, -1, x, y);
+    }
+    else
+    {
+        mapheader_run_script_with_tag_x6();
+        if (warp_data_is_not_neg_1(&sUnknown_020322EC))
+            return FALSE;
+        warp1_set_to_warp2();
+    }
+    return TRUE;
+}
+
+bool8 sub_8085058(u16 x, u16 y)
+{
+    return sub_8084FF8(CONNECTION_EMERGE, x, y);
+}
+
+bool8 sub_8085078(u16 x, u16 y)
+{
+    return sub_8084FF8(CONNECTION_DIVE, x, y);
+}
+
+void mliX_load_map(u8 mapGroup, u8 mapNum)
+{
+    s32 paletteIndex;
+
+    Overworld_SetWarpDestination(mapGroup, mapNum, -1, -1, -1);
+    if (gMapHeader.regionMapSectionId != 0x3A)
+        sub_8085810();
+
+    ApplyCurrentWarp();
+    set_current_map_header_from_sav1_save_old_name();
+    LoadMapObjTemplatesFromHeader();
+    TrySetMapSaveWarpStatus();
+    ClearTempFieldEventData();
+    ResetCyclingRoadChallengeData();
+    prev_quest_postbuffer_cursor_backup_reset();
+    TryUpdateRandomTrainerRematches(mapGroup, mapNum);
+    DoTimeBasedEvents();
+    SetSav1WeatherFromCurrMapHeader();
+    ChooseAmbientCrySpecies();
+    SetDefaultFlashLevel();
+    Overworld_ClearSavedMusic();
+    mapheader_run_script_with_tag_x3();
+    not_trainer_hill_battle_pyramid();
+    copy_map_tileset2_to_vram_2(gMapHeader.mapData);
+    apply_map_tileset2_palette(gMapHeader.mapData);
+
+    for (paletteIndex = 6; paletteIndex < 13; paletteIndex++)
+        ApplyWeatherGammaShiftToPal(paletteIndex);
+
+    sub_80A0A2C();
+    UpdateLocationHistoryForRoamer();
+    RoamerMove();
+    DoCurrentWeather();
+    ResetFieldTasksArgs();
+    mapheader_run_script_with_tag_x5();
+
+    if (gMapHeader.regionMapSectionId != 0x3A || gMapHeader.regionMapSectionId != sLastMapSectionId)
+        ShowMapNamePopup();
+}
+
+static void mli0_load_map(u32 a1)
+{
+    bool8 v2;
+    bool8 indoors;
+
+    set_current_map_header_from_sav1_save_old_name();
+    if (!(sUnknown_020322D8 & 1))
+    {
+        if (gMapHeader.mapDataId == 0x169)
+            sub_81AA1D8();
+        else if (InTrainerHill())
+            sub_81D5DF8();
+        else
+            LoadMapObjTemplatesFromHeader();
+    }
+
+    v2 = is_light_level_1_2_3_5_or_6(gMapHeader.mapType);
+    indoors = Overworld_MapTypeIsIndoors(gMapHeader.mapType);
+
+    sub_80EB218();
+    TrySetMapSaveWarpStatus();
+    ClearTempFieldEventData();
+    ResetCyclingRoadChallengeData();
+    prev_quest_postbuffer_cursor_backup_reset();
+    TryUpdateRandomTrainerRematches(gSaveBlock1Ptr->location.mapGroup, gSaveBlock1Ptr->location.mapNum);
+    if (a1 != 1)
+        DoTimeBasedEvents();
+    SetSav1WeatherFromCurrMapHeader();
+    ChooseAmbientCrySpecies();
+    if (v2)
+        FlagClear(FLAG_SYS_USE_FLASH);
+    SetDefaultFlashLevel();
+    Overworld_ClearSavedMusic();
+    mapheader_run_script_with_tag_x3();
+    UpdateLocationHistoryForRoamer();
+    RoamerMoveToOtherLocationSet();
+    if (gMapHeader.mapDataId == 0x169)
+        battle_pyramid_map_load_related(0);
+    else if (InTrainerHill())
+        trainer_hill_map_load_related();
+    else
+        not_trainer_hill_battle_pyramid();
+
+    if (a1 != 1 && indoors)
+    {
+        UpdateTVScreensOnMap(gUnknown_03005DC0.width, gUnknown_03005DC0.height);
+        sub_80E9238(1);
+    }
+}
+
+void player_avatar_init_params_reset(void)
+{
+    sUnknown_02032300.player_field_1 = 1;
+    sUnknown_02032300.player_field_0 = 1;
+}
+
+void walkrun_find_lowest_active_bit_in_bitfield(void)
+{
+    sUnknown_02032300.player_field_1 = player_get_direction_lower_nybble();
+
+    if (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_MACH_BIKE))
+        sUnknown_02032300.player_field_0 = 2;
+    else if (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_ACRO_BIKE))
+        sUnknown_02032300.player_field_0 = 4;
+    else if (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_SURFING))
+        sUnknown_02032300.player_field_0 = 8;
+    else if (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_4))
+        sUnknown_02032300.player_field_0 = 16;
+    else
+        sUnknown_02032300.player_field_0 = 1;
+}
+
+static struct UnkPlayerStruct *sub_80852D4(void)
+{
+    struct UnkPlayerStruct playerStruct;
+    u8 mapType = Overworld_GetMapTypeOfSaveblockLocation();
+    u16 v2 = cur_mapdata_block_role_at_screen_center_acc_to_sav1();
+    u8 v4 = sub_808532C(&sUnknown_02032300, v2, mapType);
+    playerStruct.player_field_0 = v4;
+    playerStruct.player_field_1 = sub_808538C(&sUnknown_02032300, v4, v2, mapType);
+    sUnknown_02032300 = playerStruct;
+    return &sUnknown_02032300;
+}
+
+static u8 sub_808532C(struct UnkPlayerStruct *playerStruct, u16 a2, u8 a3)
+{
+    if (a3 != 8 && FlagGet(FLAG_SYS_CRUISE_MODE))
+        return 1;
+    else if (a3 == 5)
+        return 16;
+    else if (MetatileBehavior_IsSurfableWaterOrUnderwater(a2) == 1)
+        return 8;
+    else if (Overworld_IsBikingAllowed() != TRUE)
+        return 1;
+    else if (playerStruct->player_field_0 == 2)
+        return 2;
+    else if (playerStruct->player_field_0 != 4)
+        return 1;
+    else
+        return 4;
+}
+
+static u8 sub_808538C(struct UnkPlayerStruct *playerStruct, u8 a2, u16 a3, u8 a4)
+{
+    if (FlagGet(FLAG_SYS_CRUISE_MODE) && a4 == 6)
+        return 4;
+    else if (MetatileBehavior_IsDeepSouthWarp(a3) == TRUE)
+        return 2;
+    else if (MetatileBehavior_IsNonAnimDoor(a3) == TRUE || MetatileBehavior_IsDoor(a3) == TRUE)
+        return 1;
+    else if (MetatileBehavior_IsSouthArrowWarp(a3) == TRUE)
+        return 2;
+    else if (MetatileBehavior_IsNorthArrowWarp(a3) == TRUE)
+        return 1;
+    else if (MetatileBehavior_IsWestArrowWarp(a3) == TRUE)
+        return 4;
+    else if (MetatileBehavior_IsEastArrowWarp(a3) == TRUE)
+        return 3;
+    else if ((playerStruct->player_field_0 == 16 && a2 == 8)
+     || (playerStruct->player_field_0 == 8 && a2 == 16))
+        return playerStruct->player_field_1;
+    else if (MetatileBehavior_IsLadder(a3) == TRUE)
+        return playerStruct->player_field_1;
+    else
+        return 1;
+}
+
+static u16 cur_mapdata_block_role_at_screen_center_acc_to_sav1(void)
+{
+    return MapGridGetMetatileBehaviorAt(gSaveBlock1Ptr->pos.x + 7, gSaveBlock1Ptr->pos.y + 7);
+}
+
+bool32 Overworld_IsBikingAllowed(void)
+{
+    if (!(gMapHeader.flags & 1))
+        return FALSE;
+    else
+        return TRUE;
+}
+
+void SetDefaultFlashLevel(void)
+{
+    if (!gMapHeader.cave)
+        gSaveBlock1Ptr->flashLevel = 0;
+    else if (FlagGet(FLAG_SYS_USE_FLASH))
+        gSaveBlock1Ptr->flashLevel = 1;
+    else
+        gSaveBlock1Ptr->flashLevel = gMaxFlashLevel - 1;
+}
+
+void Overworld_SetFlashLevel(s32 flashLevel)
+{
+    if (flashLevel < 0 || flashLevel > gMaxFlashLevel)
+        flashLevel = 0;
+    gSaveBlock1Ptr->flashLevel = flashLevel;
+}
+
+u8 Overworld_GetFlashLevel(void)
+{
+    return gSaveBlock1Ptr->flashLevel;
+}
+
+void sub_8085524(u16 mapDataId)
+{
+    gSaveBlock1Ptr->mapDataId = mapDataId;
+    gMapHeader.mapData = get_mapdata_header();
+}
+
+void sub_8085540(u8 var)
+{
+    sUnknown_020322D8 = var;
+}
+
+u8 sub_808554C(void)
+{
+    return sUnknown_020322D8;
+}
+
+static bool16 ShouldLegendaryMusicPlayAtLocation(struct WarpData *warp)
+{
+    if (!FlagGet(FLAG_SYS_WEATHER_CTRL))
+        return FALSE;
+    if (warp->mapGroup == 0)
+    {
+        switch (warp->mapNum)
+        {
+        case MAP_NUM(LILYCOVE_CITY):
+        case MAP_NUM(MOSSDEEP_CITY):
+        case MAP_NUM(SOOTOPOLIS_CITY):
+        case MAP_NUM(EVER_GRANDE_CITY):
+        case MAP_NUM(ROUTE124):
+        case MAP_NUM(ROUTE125):
+        case MAP_NUM(ROUTE126):
+        case MAP_NUM(ROUTE127):
+        case MAP_NUM(ROUTE128):
+            return TRUE;
+        default:
+            if (VarGet(VAR_0x405E) < 4)
+                return FALSE;
+            switch (warp->mapNum)
+            {
+            case MAP_NUM(ROUTE129):
+            case MAP_NUM(ROUTE130):
+            case MAP_NUM(ROUTE131):
+                return TRUE;
+            }
+        }
+    }
+    return FALSE;
+}
+
+static bool16 NoMusicInSotopolisWithLegendaries(struct WarpData *warp)
+{
+    if (VarGet(VAR_0x40CA) != 1)
+        return FALSE;
+    else if (warp->mapGroup != MAP_GROUP(SOOTOPOLIS_CITY))
+        return FALSE;
+    else if (warp->mapNum == MAP_NUM(SOOTOPOLIS_CITY))
+        return TRUE;
+    else
+        return FALSE;
+}
+
+static bool16 IsInfiltratedWeatherInstitute(struct WarpData *warp)
+{
+    if (VarGet(VAR_WEATHER_INSTITUTE_STATE))
+        return FALSE;
+    else if (warp->mapGroup != MAP_GROUP(ROUTE119_WEATHER_INSTITUTE_1F))
+        return FALSE;
+    else if (warp->mapNum == MAP_NUM(ROUTE119_WEATHER_INSTITUTE_1F)
+     || warp->mapNum == MAP_NUM(ROUTE119_WEATHER_INSTITUTE_2F))
+        return TRUE;
+    else
+        return FALSE;
+}
+
+static bool16 IsInflitratedSpaceCenter(struct WarpData *warp)
+{
+    if (VarGet(VAR_0x405D) == 0)
+        return FALSE;
+    else if (VarGet(VAR_0x405D) > 2)
+        return FALSE;
+    else if (warp->mapGroup != MAP_GROUP(MOSSDEEP_CITY_SPACE_CENTER_1F))
+        return FALSE;
+    else if (warp->mapNum == MAP_NUM(MOSSDEEP_CITY_SPACE_CENTER_1F)
+     || warp->mapNum == MAP_NUM(MOSSDEEP_CITY_SPACE_CENTER_2F))
+        return TRUE;
+    return FALSE;
+}
+
+u16 GetLocationMusic(struct WarpData *warp)
+{
+    if (NoMusicInSotopolisWithLegendaries(warp) == TRUE)
+        return 0xFFFF;
+    else if (ShouldLegendaryMusicPlayAtLocation(warp) == TRUE)
+        return MUS_OOAME;
+    else if (IsInflitratedSpaceCenter(warp) == TRUE)
+        return MUS_MGM0;
+    else if (IsInfiltratedWeatherInstitute(warp) == TRUE)
+        return MUS_TOZAN;
+    else
+        return Overworld_GetMapHeaderByGroupAndId(warp->mapGroup, warp->mapNum)->music;
+}
+
+u16 GetCurrLocationDefaultMusic(void)
+{
+    u16 music;
+
+    // Play the desert music only when the sandstorm is active on Route 111.
+    if (gSaveBlock1Ptr->location.mapGroup == MAP_GROUP(ROUTE111)
+     && gSaveBlock1Ptr->location.mapNum == MAP_NUM(ROUTE111)
+     && GetSav1Weather() == 8)
+        return MUS_ASHROAD;
+
+    music = GetLocationMusic(&gSaveBlock1Ptr->location);
+    if (music != 0x7FFF)
+    {
+        return music;
+    }
+    else
+    {
+        if (gSaveBlock1Ptr->pos.x < 24)
+            return MUS_DOORO_X1;
+        else
+            return MUS_GRANROAD;
+    }
+}
+
+u16 GetWarpDestinationMusic(void)
+{
+    u16 music = GetLocationMusic(&sWarpDestination);
+    if (music != 0x7FFF)
+    {
+        return music;
+    }
+    else
+    {
+        if (gSaveBlock1Ptr->location.mapGroup == MAP_GROUP(MAUVILLE_CITY)
+         && gSaveBlock1Ptr->location.mapNum == MAP_NUM(MAUVILLE_CITY))
+            return MUS_DOORO_X1;
+        else
+            return MUS_GRANROAD;
+    }
+}
+
+void Overworld_ResetMapMusic(void)
+{
+    ResetMapMusic();
+}
+
+void Overworld_PlaySpecialMapMusic(void)
+{
+    u16 music = GetCurrLocationDefaultMusic();
+
+    if (music != MUS_OOAME && music != 0xFFFF)
+    {
+        if (gSaveBlock1Ptr->savedMusic)
+            music = gSaveBlock1Ptr->savedMusic;
+        else if (Overworld_GetMapTypeOfSaveblockLocation() == MAP_TYPE_UNDERWATER)
+            music = MUS_DEEPDEEP;
+        else if (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_SURFING))
+            music = MUS_NAMINORI;
+    }
+
+    if (music != GetCurrentMapMusic())
+        PlayNewMapMusic(music);
+}
+
+void Overworld_SetSavedMusic(u16 songNum)
+{
+    gSaveBlock1Ptr->savedMusic = songNum;
+}
+
+void Overworld_ClearSavedMusic(void)
+{
+    gSaveBlock1Ptr->savedMusic = 0;
+}
+
+static void sub_8085810(void)
+{
+    if (FlagGet(FLAG_SPECIAL_FLAG_0x4001) != TRUE)
+    {
+        u16 newMusic = GetWarpDestinationMusic();
+        u16 currentMusic = GetCurrentMapMusic();
+        if (newMusic != MUS_OOAME && newMusic != 0xFFFF)
+        {
+            if (currentMusic == MUS_DEEPDEEP || currentMusic == MUS_NAMINORI)
+                return;
+            if (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_SURFING))
+                newMusic = MUS_NAMINORI;
+        }
+        if (newMusic != currentMusic)
+        {
+            if (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_MACH_BIKE | PLAYER_AVATAR_FLAG_ACRO_BIKE))
+                FadeOutAndFadeInNewMapMusic(newMusic, 4, 4);
+            else
+                FadeOutAndPlayNewMapMusic(newMusic, 8);
+        }
+    }
+}
+
+void Overworld_ChangeMusicToDefault(void)
+{
+    u16 currentMusic = GetCurrentMapMusic();
+    if (currentMusic != GetCurrLocationDefaultMusic())
+        FadeOutAndPlayNewMapMusic(GetCurrLocationDefaultMusic(), 8);
+}
+
+void Overworld_ChangeMusicTo(u16 newMusic)
+{
+    u16 currentMusic = GetCurrentMapMusic();
+    if (currentMusic != newMusic && currentMusic != MUS_OOAME)
+        FadeOutAndPlayNewMapMusic(newMusic, 8);
+}
+
+u8 GetMapMusicFadeoutSpeed(void)
+{
+    const struct MapHeader *mapHeader = warp1_get_mapheader();
+    if (Overworld_MapTypeIsIndoors(mapHeader->mapType) == TRUE)
+        return 2;
+    else
+        return 4;
+}
+
+void music_something(void)
+{
+    u16 currentMusic = GetCurrentMapMusic();
+    u16 warpMusic = GetWarpDestinationMusic();
+    if (FlagGet(FLAG_SPECIAL_FLAG_0x4001) != TRUE && warpMusic != GetCurrentMapMusic())
+    {
+        if (currentMusic == MUS_NAMINORI
+            && VarGet(VAR_0x40CA) == 2
+            && gSaveBlock1Ptr->location.mapGroup == MAP_GROUP(SOOTOPOLIS_CITY)
+            && gSaveBlock1Ptr->location.mapNum == MAP_NUM(SOOTOPOLIS_CITY)
+            && sWarpDestination.mapGroup == MAP_GROUP(SOOTOPOLIS_CITY)
+            && sWarpDestination.mapNum == MAP_NUM(SOOTOPOLIS_CITY)
+            && sWarpDestination.x == 0x1D
+            && sWarpDestination.y == 0x35)
+            return;
+        FadeOutMapMusic(GetMapMusicFadeoutSpeed());
+    }
+}
+
+bool8 sub_80859A0(void)
+{
+    return IsNotWaitingForBGMStop();
+}
+
+void Overworld_FadeOutMapMusic(void)
+{
+    FadeOutMapMusic(4);
+}
+
+static void PlayAmbientCry(void)
+{
+    s16 x, y;
+    s8 pan;
+    s8 volume;
+
+    PlayerGetDestCoords(&x, &y);
+    if (sIsAmbientCryWaterMon == TRUE
+     && !MetatileBehavior_IsSurfableWaterOrUnderwater(MapGridGetMetatileBehaviorAt(x, y)))
+        return;
+    pan = (Random() % 88) + 212;
+    volume = (Random() % 30) + 50;
+    PlayCry2(sAmbientCrySpecies, pan, volume, 1);
+}
+
+void UpdateAmbientCry(s16 *state, u16 *delayCounter)
+{
+    u8 i, monsCount, divBy;
+
+    switch (*state)
+    {
+    case 0:
+        if (sAmbientCrySpecies == SPECIES_NONE)
+            *state = 4;
+        else
+            *state = 1;
+        break;
+    case 1:
+        *delayCounter = (Random() % 2400) + 1200;
+        *state = 3;
+        break;
+    case 2:
+        divBy = 1;
+        monsCount = CalculatePlayerPartyCount();
+        for (i = 0; i < monsCount; i++)
+        {
+            if (!GetMonData(&gPlayerParty[i], MON_DATA_SANITY_BIT3)
+                && GetMonAbility(&gPlayerParty[0]) == ABILITY_SWARM)
+            {
+                divBy = 2;
+                break;
+            }
+        }
+        *delayCounter = ((Random() % 1200) + 1200) / divBy;
+        *state = 3;
+        break;
+    case 3:
+        (*delayCounter)--;
+        if (*delayCounter == 0)
+        {
+            PlayAmbientCry();
+            *state = 2;
+        }
+        break;
+    case 4:
+        break;
+    }
+}
+
+static void ChooseAmbientCrySpecies(void)
+{
+    if ((gSaveBlock1Ptr->location.mapGroup == MAP_GROUP(ROUTE130)
+     && gSaveBlock1Ptr->location.mapNum == MAP_NUM(ROUTE130))
+     && !IsMirageIslandPresent())
+    {
+        // Only play water pokemon cries on this route
+        // when Mirage Island is not present
+        sIsAmbientCryWaterMon = TRUE;
+        sAmbientCrySpecies = GetLocalWaterMon();
+    }
+    else
+    {
+        sAmbientCrySpecies = GetLocalWildMon(&sIsAmbientCryWaterMon);
+    }
+}
+
+u8 GetMapTypeByGroupAndId(s8 mapGroup, s8 mapNum)
+{
+    return Overworld_GetMapHeaderByGroupAndId(mapGroup, mapNum)->mapType;
+}
+
+u8 GetMapTypeByWarpData(struct WarpData *warp)
+{
+    return GetMapTypeByGroupAndId(warp->mapGroup, warp->mapNum);
+}
+
+u8 Overworld_GetMapTypeOfSaveblockLocation(void)
+{
+    return GetMapTypeByWarpData(&gSaveBlock1Ptr->location);
+}
+
+u8 get_map_light_from_warp0(void)
+{
+    return GetMapTypeByWarpData(&gUnknown_020322DC);
+}
+
+bool8 is_light_level_1_2_3_5_or_6(u8 mapType)
+{
+    if (mapType == MAP_TYPE_ROUTE
+     || mapType == MAP_TYPE_TOWN
+     || mapType == MAP_TYPE_UNDERWATER
+     || mapType == MAP_TYPE_CITY
+     || mapType == MAP_TYPE_6)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+bool8 Overworld_MapTypeAllowsTeleportAndFly(u8 mapType)
+{
+    if (mapType == MAP_TYPE_ROUTE
+     || mapType == MAP_TYPE_TOWN
+     || mapType == MAP_TYPE_6
+     || mapType == MAP_TYPE_CITY)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+bool8 Overworld_MapTypeIsIndoors(u8 mapType)
+{
+    if (mapType == MAP_TYPE_INDOOR
+     || mapType == MAP_TYPE_SECRET_BASE)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+u8 sav1_saved_warp2_map_get_name(void)
+{
+    return Overworld_GetMapHeaderByGroupAndId(gSaveBlock1Ptr->warp2.mapGroup, gSaveBlock1Ptr->warp2.mapNum)->regionMapSectionId;
+}
+
+u8 sav1_map_get_name(void)
+{
+    return Overworld_GetMapHeaderByGroupAndId(gSaveBlock1Ptr->location.mapGroup, gSaveBlock1Ptr->location.mapNum)->regionMapSectionId;
+}
+
+u8 GetCurrentMapBattleScene(void)
+{
+    return Overworld_GetMapHeaderByGroupAndId(gSaveBlock1Ptr->location.mapGroup, gSaveBlock1Ptr->location.mapNum)->battleType;
+}
+
+static void overworld_bg_setup(void)
+{
+    InitBgsFromTemplates(0, gUnknown_08339DAC, ARRAY_COUNT(gUnknown_08339DAC));
+    SetBgAttribute(1, BG_CTRL_ATTR_PALETTEMODE, 1);
+    SetBgAttribute(2, BG_CTRL_ATTR_PALETTEMODE, 1);
+    SetBgAttribute(3, BG_CTRL_ATTR_PALETTEMODE, 1);
+    gUnknown_03005DA0 = AllocZeroed(0x800);
+    gUnknown_03005D9C = AllocZeroed(0x800);
+    gUnknown_03005DA4 = AllocZeroed(0x800);
+    SetBgTilemapBuffer(1, gUnknown_03005DA0);
+    SetBgTilemapBuffer(2, gUnknown_03005D9C);
+    SetBgTilemapBuffer(3, gUnknown_03005DA4);
+    sub_81971D0();
+}
+
+void overworld_free_bg_tilemaps(void)
+{
+    sub_81BE72C();
+    sub_81971F4();
+    if (gUnknown_03005DA4 != NULL)
+        FREE_AND_SET_NULL(gUnknown_03005DA4);
+    if (gUnknown_03005D9C != NULL)
+        FREE_AND_SET_NULL(gUnknown_03005D9C);
+    if (gUnknown_03005DA0 != NULL)
+        FREE_AND_SET_NULL(gUnknown_03005DA0);
+}
+
+static void ResetSafariZoneFlag_(void)
+{
+    ResetSafariZoneFlag();
+}
+
+bool32 is_c1_link_related_active(void)
+{
+    if (gMain.callback1 == c1_link_related)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+static void DoCB1_Overworld(u16 newKeys, u16 heldKeys)
+{
+    struct FieldInput inputStruct;
+
+    sub_808B578();
+    FieldClearPlayerInput(&inputStruct);
+    FieldGetPlayerInput(&inputStruct, newKeys, heldKeys);
+    if (!ScriptContext2_IsEnabled())
+    {
+        if (sub_809C014(&inputStruct) == 1)
+        {
+            ScriptContext2_Enable();
+            HideMapNamePopUpWindow();
+        }
+        else
+        {
+            player_step(inputStruct.dpadDirection, newKeys, heldKeys);
+        }
+    }
+}
+
+void CB1_Overworld(void)
+{
+    if (gMain.callback2 == CB2_Overworld)
+        DoCB1_Overworld(gMain.newKeys, gMain.heldKeys);
+}
+
+static void OverworldBasic(void)
+{
+    ScriptContext2_RunScript();
+    RunTasks();
+    AnimateSprites();
+    CameraUpdate();
+    UpdateCameraPanning();
+    BuildOamBuffer();
+    UpdatePaletteFade();
+    sub_80A0A38();
+    do_scheduled_bg_tilemap_copies_to_vram();
+}
+
+// This CB2 is used when starting
+void CB2_OverworldBasic(void)
+{
+    OverworldBasic();
+}
+
+void CB2_Overworld(void)
+{
+    bool32 fading = (gPaletteFade.active != 0);
+    if (fading)
+        SetVBlankCallback(NULL);
+    OverworldBasic();
+    if (fading)
+        SetFieldVBlankCallback();
+}
+
+void SetMainCallback1(MainCallback cb)
+{
+    gMain.callback1 = cb;
+}
+
+void sub_8085E94(void *a0)
+{
+    sUnknown_03000E0C = a0;
+}
+
+static bool8 map_post_load_hook_exec(void)
+{
+    if (gUnknown_03005DB0 != NULL)
+    {
+        if (!gUnknown_03005DB0())
+        {
+            return FALSE;
+        }
+        else
+        {
+            gUnknown_03005DB0 = NULL;
+            gFieldCallback = NULL;
+        }
+    }
+    else
+    {
+        if (gFieldCallback != NULL)
+            gFieldCallback();
+        else
+            mapldr_default();
+
+        gFieldCallback = NULL;
+    }
+
+    return TRUE;
+}
+
+void CB2_NewGame(void)
+{
+    FieldClearVBlankHBlankCallbacks();
+    StopMapMusic();
+    ResetSafariZoneFlag_();
+    NewGameInitData();
+    player_avatar_init_params_reset();
+    PlayTimeCounter_Start();
+    ScriptContext1_Init();
+    ScriptContext2_Disable();
+    gFieldCallback = ExecuteTruckSequence;
+    gUnknown_03005DB0 = NULL;
+    do_load_map_stuff_loop(&gMain.state);
+    SetFieldVBlankCallback();
+    SetMainCallback1(CB1_Overworld);
+    SetMainCallback2(CB2_Overworld);
+}
+
+void CB2_WhiteOut(void)
+{
+    u8 val;
+
+    if (++gMain.state >= 120)
+    {
+        FieldClearVBlankHBlankCallbacks();
+        StopMapMusic();
+        ResetSafariZoneFlag_();
+        DoWhiteOut();
+        player_avatar_init_params_reset();
+        ScriptContext1_Init();
+        ScriptContext2_Disable();
+        gFieldCallback = sub_80AF3C8;
+        val = 0;
+        do_load_map_stuff_loop(&val);
+        SetFieldVBlankCallback();
+        SetMainCallback1(CB1_Overworld);
+        SetMainCallback2(CB2_Overworld);
+    }
+}
+
+void CB2_LoadMap(void)
+{
+    FieldClearVBlankHBlankCallbacks();
+    ScriptContext1_Init();
+    ScriptContext2_Disable();
+    SetMainCallback1(NULL);
+    SetMainCallback2(c2_change_map);
+    gMain.savedCallback = CB2_LoadMap2;
+}
+
+static void CB2_LoadMap2(void)
+{
+    do_load_map_stuff_loop(&gMain.state);
+    SetFieldVBlankCallback();
+    SetMainCallback1(CB1_Overworld);
+    SetMainCallback2(CB2_Overworld);
+}
+
+void sub_8086024(void)
+{
+    if (!gMain.state)
+    {
+        FieldClearVBlankHBlankCallbacks();
+        ScriptContext1_Init();
+        ScriptContext2_Disable();
+        SetMainCallback1(NULL);
+    }
+    if (load_map_stuff(&gMain.state, 1))
+    {
+        SetFieldVBlankCallback();
+        SetMainCallback1(CB1_Overworld);
+        SetMainCallback2(CB2_Overworld);
+    }
+}
+
+void sub_8086074(void)
+{
+    FieldClearVBlankHBlankCallbacks();
+    gFieldCallback = sub_80AF314;
+    SetMainCallback2(c2_80567AC);
+}
+
+static void c2_80567AC(void)
+{
+    if (map_loading_iteration_3(&gMain.state))
+    {
+        SetFieldVBlankCallback();
+        SetMainCallback1(c1_link_related);
+        sub_8086C2C();
+        SetMainCallback2(CB2_Overworld);
+    }
+}
+
+void CB2_ReturnToField(void)
+{
+    if (is_c1_link_related_active() == TRUE)
+    {
+        SetMainCallback2(CB2_ReturnToFieldLink);
+    }
+    else
+    {
+        FieldClearVBlankHBlankCallbacks();
+        SetMainCallback2(CB2_ReturnToFieldLocal);
+    }
+}
+
+void CB2_ReturnToFieldLocal(void)
+{
+    if (sub_8086638(&gMain.state))
+    {
+        SetFieldVBlankCallback();
+        SetMainCallback2(CB2_Overworld);
+    }
+}
+
+void CB2_ReturnToFieldLink(void)
+{
+    if (!sub_8087598() && map_loading_iteration_2_link(&gMain.state))
+        SetMainCallback2(CB2_Overworld);
+}
+
+void c2_8056854(void)
+{
+    FieldClearVBlankHBlankCallbacks();
+    StopMapMusic();
+    SetMainCallback1(c1_link_related);
+    sub_8086C2C();
+
+    if (gWirelessCommType != 0)
+        gFieldCallback = sub_80AF314;
+    else
+        gFieldCallback = sub_80AF214;
+
+    ScriptContext1_Init();
+    ScriptContext2_Disable();
+    CB2_ReturnToField();
+}
+
+void CB2_ReturnToFieldWithOpenMenu(void)
+{
+    FieldClearVBlankHBlankCallbacks();
+    gUnknown_03005DB0 = sub_80AF6A4;
+    CB2_ReturnToField();
+}
+
+void sub_80861B0(void)
+{
+    FieldClearVBlankHBlankCallbacks();
+    gFieldCallback = sub_80AF188;
+    CB2_ReturnToField();
+}
+
+void CB2_ReturnToFieldContinueScript(void)
+{
+    FieldClearVBlankHBlankCallbacks();
+    gFieldCallback = sub_80AF168;
+    CB2_ReturnToField();
+}
+
+void sub_80861E8(void)
+{
+    FieldClearVBlankHBlankCallbacks();
+    gFieldCallback = sub_80AF3C8;
+    CB2_ReturnToField();
+}
+
+static void sub_8086204(void)
+{
+    if ((gMapHeader.flags & 0xF8) == 8 && sub_80E909C() == TRUE)
+        ShowMapNamePopup();
+    sub_80AF3C8();
+}
+
+void CB2_ContinueSavedGame(void)
+{
+    u8 trainerHillMapId;
+
+    FieldClearVBlankHBlankCallbacks();
+    StopMapMusic();
+    ResetSafariZoneFlag_();
+    if (gSaveFileStatus == 0xFF)
+        sub_81A3908();
+
+    LoadSaveblockMapHeader();
+    set_warp2_warp3_to_neg_1();
+    trainerHillMapId = GetCurrentTrainerHillMapId();
+    if (gMapHeader.mapDataId == 0x169)
+        sub_81AA2F8();
+    else if (trainerHillMapId != 0 && trainerHillMapId != 6)
+        sub_81D5F48();
+    else
+        LoadSaveblockMapObjScripts();
+
+    UnfreezeMapObjects();
+    DoTimeBasedEvents();
+    sub_8084788();
+    if (gMapHeader.mapDataId == 0x169)
+        battle_pyramid_map_load_related(1);
+    else if (trainerHillMapId != 0)
+        trainer_hill_map_load_related();
+    else
+        sub_8087D74();
+
+    PlayTimeCounter_Start();
+    ScriptContext1_Init();
+    ScriptContext2_Disable();
+    sub_8195E10();
+    if (GetSecretBase2Field_9() == 1)
+    {
+        ClearSecretBase2Field_9();
+        warp1_set_to_sav1w();
+        warp_in();
+        sub_80EDB44();
+        SetMainCallback2(CB2_LoadMap);
+    }
+    else
+    {
+        sub_80EDB44();
+        gFieldCallback = sub_8086204;
+        SetMainCallback1(CB1_Overworld);
+        CB2_ReturnToField();
+    }
+}
+
+static void FieldClearVBlankHBlankCallbacks(void)
+{
+    if (warp0_in_pokecenter() == TRUE)
+        CloseLink();
+
+    if (gWirelessCommType != 0)
+    {
+        EnableInterrupts(INTR_FLAG_VBLANK | INTR_FLAG_VCOUNT | INTR_FLAG_TIMER3 | INTR_FLAG_SERIAL);
+        DisableInterrupts(INTR_FLAG_HBLANK);
+    }
+    else
+    {
+        u16 savedIme = REG_IME;
+        REG_IME = 0;
+        REG_IE &= ~INTR_FLAG_HBLANK;
+        REG_IE |= INTR_FLAG_VBLANK;
+        REG_IME = savedIme;
+    }
+
+    SetVBlankCallback(NULL);
+    SetHBlankCallback(NULL);
+}
+
+static void SetFieldVBlankCallback(void)
+{
+    SetVBlankCallback(VBlankCB_Field);
+}
+
+static void VBlankCB_Field(void)
+{
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    ScanlineEffect_InitHBlankDmaTransfer();
+    FieldUpdateBgTilemapScroll();
+    TransferPlttBuffer();
+    TransferTilesetAnimsBuffer();
+}
+
+static void sub_80863B0(void)
+{
+    u8 val;
+
+    if (sub_81A9E6C())
+    {
+        door_upload_tiles();
+        ScanlineEffect_SetParams(gUnknown_08339DBC);
+    }
+    else if ((val = Overworld_GetFlashLevel()))
+    {
+        sub_80B00E8(val);
+        ScanlineEffect_SetParams(gUnknown_08339DBC);
+    }
+}
+
+static bool32 map_loading_iteration_3(u8 *state)
+{
+    switch (*state)
+    {
+    case 0:
+        overworld_bg_setup();
+        ScriptContext1_Init();
+        ScriptContext2_Disable();
+        sub_80867C8();
+        sub_80867D8();
+        (*state)++;
+        break;
+    case 1:
+        mli0_load_map(1);
+        (*state)++;
+        break;
+    case 2:
+        sub_8086988(TRUE);
+        (*state)++;
+        break;
+    case 3:
+        sub_8086AE4();
+        sub_80869DC();
+        sub_8086B14();
+        sub_8086AAC();
+        (*state)++;
+        break;
+    case 4:
+        sub_80863B0();
+        map_loading_lcd_reset();
+        sub_8197200();
+        (*state)++;
+        break;
+    case 5:
+        move_tilemap_camera_to_upper_left_corner();
+        (*state)++;
+        break;
+    case 6:
+        copy_map_tileset1_to_vram(gMapHeader.mapData);
+        (*state)++;
+        break;
+    case 7:
+        copy_map_tileset2_to_vram(gMapHeader.mapData);
+        (*state)++;
+        break;
+    case 8:
+        if (free_temp_tile_data_buffers_if_possible() != TRUE)
+        {
+            apply_map_tileset1_tileset2_palette(gMapHeader.mapData);
+            (*state)++;
+        }
+        break;
+    case 9:
+        DrawWholeMapView();
+        (*state)++;
+        break;
+    case 10:
+        cur_mapheader_run_tileset_funcs_after_some_cpuset();
+        (*state)++;
+        break;
+    case 11:
+        if (gWirelessCommType != 0)
+        {
+            sub_800E0E8();
+            CreateWirelessStatusIndicatorSprite(0, 0);
+        }
+        (*state)++;
+        break;
+    case 12:
+        if (map_post_load_hook_exec())
+            (*state)++;
+        break;
+    case 13:
+        return TRUE;
+    }
+
+    return FALSE;
+}
+
+static bool32 load_map_stuff(u8 *state, u32 a2)
+{
+    switch (*state)
+    {
+    case 0:
+        FieldClearVBlankHBlankCallbacks();
+        mli0_load_map(a2);
+        (*state)++;
+        break;
+    case 1:
+        sub_80867C8();
+        sub_80867D8();
+        (*state)++;
+        break;
+    case 2:
+        sub_8086988(a2);
+        (*state)++;
+        break;
+    case 3:
+        mli4_mapscripts_and_other();
+        sub_8086A80();
+        (*state)++;
+        break;
+    case 4:
+        sub_80863B0();
+        map_loading_lcd_reset();
+        sub_8197200();
+        (*state)++;
+        break;
+    case 5:
+        move_tilemap_camera_to_upper_left_corner();
+        (*state)++;
+        break;
+    case 6:
+        copy_map_tileset1_to_vram(gMapHeader.mapData);
+        (*state)++;
+        break;
+    case 7:
+        copy_map_tileset2_to_vram(gMapHeader.mapData);
+        (*state)++;
+        break;
+    case 8:
+        if (free_temp_tile_data_buffers_if_possible() != TRUE)
+        {
+            apply_map_tileset1_tileset2_palette(gMapHeader.mapData);
+            (*state)++;
+        }
+        break;
+    case 9:
+        DrawWholeMapView();
+        (*state)++;
+        break;
+    case 10:
+        cur_mapheader_run_tileset_funcs_after_some_cpuset();
+        (*state)++;
+        break;
+    case 11:
+        if ((gMapHeader.flags & 0xF8) == 8 && sub_80E909C() == 1)
+            ShowMapNamePopup();
+        (*state)++;
+        break;
+    case 12:
+        if (map_post_load_hook_exec())
+            (*state)++;
+        break;
+    case 13:
+        return TRUE;
+    }
+
+    return FALSE;
+}
+
+static bool32 sub_8086638(u8 *state)
+{
+    switch (*state)
+    {
+    case 0:
+        sub_80867C8();
+        sub_80867D8();
+        sub_8086988(0);
+        sub_8086A68();
+        sub_8086A80();
+        (*state)++;
+        break;
+    case 1:
+        sub_8086860();
+        sub_81D64C0();
+        (*state)++;
+        break;
+    case 2:
+        if (map_post_load_hook_exec())
+            (*state)++;
+        break;
+    case 3:
+        return TRUE;
+    }
+
+    return FALSE;
+}
+
+static bool32 map_loading_iteration_2_link(u8 *state)
+{
+    switch (*state)
+    {
+    case 0:
+        FieldClearVBlankHBlankCallbacks();
+        sub_80867C8();
+        sub_80867D8();
+        (*state)++;
+        break;
+    case 1:
+        sub_8086988(1);
+        (*state)++;
+        break;
+    case 2:
+        sub_8086B9C();
+        sub_8086A68();
+        sub_8086AC8();
+        (*state)++;
+        break;
+    case 3:
+        sub_80863B0();
+        map_loading_lcd_reset();
+        sub_8197200();
+        (*state)++;
+        break;
+    case 4:
+        move_tilemap_camera_to_upper_left_corner();
+        (*state)++;
+        break;
+    case 5:
+        copy_map_tileset1_to_vram(gMapHeader.mapData);
+        (*state)++;
+        break;
+    case 6:
+        copy_map_tileset2_to_vram(gMapHeader.mapData);
+        (*state)++;
+        break;
+    case 7:
+        if (free_temp_tile_data_buffers_if_possible() != TRUE)
+        {
+            apply_map_tileset1_tileset2_palette(gMapHeader.mapData);
+            (*state)++;
+        }
+        break;
+    case 8:
+        DrawWholeMapView();
+        (*state)++;
+        break;
+    case 9:
+        cur_mapheader_run_tileset_funcs_after_some_cpuset();
+        (*state)++;
+        break;
+    case 11:
+        if (gWirelessCommType != 0)
+        {
+            sub_800E0E8();
+            CreateWirelessStatusIndicatorSprite(0, 0);
+        }
+        (*state)++;
+        break;
+    case 12:
+        if (map_post_load_hook_exec())
+            (*state)++;
+        break;
+    case 10:
+        (*state)++;
+        break;
+    case 13:
+        SetFieldVBlankCallback();
+        (*state)++;
+        return TRUE;
+    }
+
+    return FALSE;
+}
+
+static void do_load_map_stuff_loop(u8 *state)
+{
+    while (!load_map_stuff(state, 0));
+}
+
+static void sub_80867C8(void)
+{
+    sub_81BE6AC();
+    MoveSaveBlocks_ResetHeap();
+}
+
+static void sub_80867D8(void)
+{
+    SetGpuReg(REG_OFFSET_DISPCNT, 0);
+    ScanlineEffect_Stop();
+
+    DmaClear16(3, PLTT + 2, PLTT_SIZE - 2);
+    DmaFillLarge16(3, 0, (void *)(VRAM + 0x0), 0x18000, 0x1000);
+    ResetOamRange(0, 128);
+    LoadOam();
+}
+
+static void sub_8086860(void)
+{
+    sub_80863B0();
+    map_loading_lcd_reset();
+    sub_8197200();
+    mapdata_load_assets_to_gpu_and_full_redraw();
+}
+
+static void map_loading_lcd_reset(void)
+{
+    clear_scheduled_bg_copies_to_vram();
+    reset_temp_tile_data_buffers();
+    SetGpuReg(REG_OFFSET_MOSAIC, 0);
+    SetGpuReg(REG_OFFSET_WININ, 0x1F1F);
+    SetGpuReg(REG_OFFSET_WINOUT, 0x101);
+    SetGpuReg(REG_OFFSET_WIN0H, 0xFF);
+    SetGpuReg(REG_OFFSET_WIN0V, 0xFF);
+    SetGpuReg(REG_OFFSET_WIN1H, 0xFFFF);
+    SetGpuReg(REG_OFFSET_WIN1V, 0xFFFF);
+    SetGpuReg(REG_OFFSET_BLDCNT, gUnknown_82EC7C4[1] | gUnknown_82EC7C4[2] | gUnknown_82EC7C4[3]
+                               | BLDCNT_TGT2_OBJ | BLDCNT_EFFECT_BLEND);
+    SetGpuReg(REG_OFFSET_BLDALPHA, BLDALPHA_BLEND(13, 7));
+    overworld_bg_setup();
+    schedule_bg_copy_tilemap_to_vram(1);
+    schedule_bg_copy_tilemap_to_vram(2);
+    schedule_bg_copy_tilemap_to_vram(3);
+    ChangeBgX(0, 0, 0);
+    ChangeBgY(0, 0, 0);
+    ChangeBgX(1, 0, 0);
+    ChangeBgY(1, 0, 0);
+    ChangeBgX(2, 0, 0);
+    ChangeBgY(2, 0, 0);
+    ChangeBgX(3, 0, 0);
+    ChangeBgY(3, 0, 0);
+    SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_OBJ_ON | DISPCNT_WIN0_ON | DISPCNT_WIN1_ON
+                                | DISPCNT_OBJ_1D_MAP | DISPCNT_HBLANK_INTERVAL);
+    ShowBg(0);
+    ShowBg(1);
+    ShowBg(2);
+    ShowBg(3);
+    sub_8098128();
+}
+
+static void sub_8086988(u32 a1)
+{
+    ResetTasks();
+    ResetSpriteData();
+    ResetPaletteFade();
+    ScanlineEffect_Clear();
+    dp13_810BB8C();
+    ResetCameraUpdateInfo();
+    InstallCameraPanAheadCallback();
+    if (!a1)
+        npc_paltag_set_load(0);
+    else
+        npc_paltag_set_load(1);
+
+    FieldEffectActiveListClear();
+    sub_80AAFA4();
+    sub_80AEE84();
+    if (!a1)
+        SetUpFieldTasks();
+    mapheader_run_script_with_tag_x5();
+    sub_81BE6B8();
+}
+
+static void sub_80869DC(void)
+{
+    gUnknown_03005DEC = 0;
+    gUnknown_03005DE8 = 0;
+    sub_808D438();
+    SpawnFieldObjectsInView(0, 0);
+    mapheader_run_first_tag4_script_list_match();
+}
+
+static void mli4_mapscripts_and_other(void)
+{
+    s16 x, y;
+    struct UnkPlayerStruct *player;
+
+    gUnknown_03005DEC = 0;
+    gUnknown_03005DE8 = 0;
+    sub_808D438();
+    sav1_camera_get_focus_coords(&x, &y);
+    player = sub_80852D4();
+    InitPlayerAvatar(x, y, player->player_field_1, gSaveBlock2Ptr->playerGender);
+    SetPlayerAvatarTransitionFlags(player->player_field_0);
+    player_avatar_init_params_reset();
+    SpawnFieldObjectsInView(0, 0);
+    mapheader_run_first_tag4_script_list_match();
+}
+
+static void sub_8086A68(void)
+{
+    sub_808E16C(0, 0);
+    RotatingGate_InitPuzzleAndGraphics();
+    mapheader_run_script_with_tag_x7();
+}
+
+static void sub_8086A80(void)
+{
+    gMapObjects[gPlayerAvatar.mapObjectId].mapobj_bit_15 = 1;
+    InitCameraUpdateCallback(gPlayerAvatar.spriteId);
+}
+
+static void sub_8086AAC(void)
+{
+    InitCameraUpdateCallback(sub_8087858(gUnknown_03005DB4));
+}
+
+static void sub_8086AC8(void)
+{
+    InitCameraUpdateCallback(sub_8087858(gUnknown_03005DB4));
+}
+
+static void sub_8086AE4(void)
+{
+    u16 x, y;
+    sav1_camera_get_focus_coords(&x, &y);
+    sub_8088B3C(x + gUnknown_03005DB4, y);
+}
+
+static void sub_8086B14(void)
+{
+    u16 i;
+    u16 x, y;
+
+    sav1_camera_get_focus_coords(&x, &y);
+    x -= gUnknown_03005DB4;
+
+    for (i = 0; i < gFieldLinkPlayerCount; i++)
+    {
+        SpawnLinkPlayerMapObject(i, i + x, y, gLinkPlayers[i].gender);
+        CreateLinkPlayerSprite(i, gLinkPlayers[i].version);
+    }
+
+    sub_8086C40();
+}
+
+static void sub_8086B9C(void)
+{
+    u16 i;
+    for (i = 0; i < gFieldLinkPlayerCount; i++)
+        CreateLinkPlayerSprite(i, gLinkPlayers[i].version);
+}
+
+static void c1_link_related(void)
+{
+    if (gWirelessCommType == 0 || !sub_800F0B8() || !sub_8009F3C())
+    {
+        u8 var = gUnknown_03005DB4;
+        sub_8086F38(gLinkPartnersHeldKeys, var);
+        sub_8086FA0(sUnknown_03000E14(var));
+        sub_8086C40();
+    }
+}
+
+void sub_8086C2C(void)
+{
+    sub_8086C90();
+    c1_link_related_func_set(sub_80870B0);
+}
+
+static void sub_8086C40(void)
+{
+    sub_808709C(gLinkPartnersHeldKeys);
+}
+
+static void c1_link_related_func_set(u16 (*func)(u32))
+{
+    sUnknown_03000E19 = 0;
+    sUnknown_03000E14 = func;
+}
+
+static void sub_8086C64(void)
+{
+    if (gWirelessCommType != 0 && ++sUnknown_03000E19 > 60)
+        sub_8010198();
+}
+
+static void sub_8086C90(void)
+{
+    s32 i;
+    for (i = 0; i < 4; i++)
+        sUnknown_03000E10[i] = 0x80;
+}
+
+static bool32 sub_8086CA8(u16 a1)
+{
+    s32 i;
+    s32 count = gFieldLinkPlayerCount;
+
+    for (i = 0; i < count; i++)
+        if (sUnknown_03000E10[i] != a1)
+            return FALSE;
+    return TRUE;
+}
+
+static bool32 sub_8086CE0(u16 a1)
+{
+    s32 i;
+    s32 count = gFieldLinkPlayerCount;
+
+    for (i = 0; i < count; i++)
+        if (sUnknown_03000E10[i] == a1)
+            return TRUE;
+    return FALSE;
+}
+
+static void sub_8086D18(u32 a1, u16 a2, struct UnkStruct_8054FF8 *a3, u16 *a4)
+{
+    const u8 *script;
+
+    if (sUnknown_03000E10[a1] == 0x80)
+    {
+        script = sub_8087370(a3);
+        if (script)
+        {
+            *a4 = sub_8087480(script);
+            sUnknown_03000E10[a1] = 0x81;
+            if (a3->b)
+            {
+                c1_link_related_func_set(sub_80870F8);
+                sub_8087530(script);
+            }
+            return;
+        }
+        if (sub_8086CE0(0x83) == 1)
+        {
+            sUnknown_03000E10[a1] = 0x81;
+            if (a3->b)
+            {
+                c1_link_related_func_set(sub_80870F8);
+                sub_8087584();
+            }
+            return;
+        }
+        switch (a2)
+        {
+        case 24:
+            if (sub_8087358(a3))
+            {
+                sUnknown_03000E10[a1] = 0x81;
+                if (a3->b)
+                {
+                    c1_link_related_func_set(sub_80870F8);
+                    sub_808751C();
+                }
+            }
+            break;
+        case 18:
+            if (sub_8087388(a3) == TRUE)
+            {
+                sUnknown_03000E10[a1] = 0x81;
+                if (a3->b)
+                {
+                    c1_link_related_func_set(sub_80870F8);
+                    sub_808754C();
+                }
+            }
+            break;
+        case 25:
+            script = sub_80873B4(a3);
+            if (script)
+            {
+                sUnknown_03000E10[a1] = 0x81;
+                if (a3->b)
+                {
+                    c1_link_related_func_set(sub_80870F8);
+                    sub_8087568(script);
+                }
+            }
+            break;
+        case 27:
+            if (sub_8087340(a3))
+            {
+                sUnknown_03000E10[a1] = 0x81;
+                if (a3->b)
+                {
+                    c1_link_related_func_set(sub_808711C);
+                    sub_8087510();
+                }
+            }
+            break;
+        case 28:
+            if (sub_8087340(a3))
+            {
+                sUnknown_03000E10[a1] = 0x81;
+                if (a3->b)
+                {
+                    c1_link_related_func_set(sub_8087140);
+                    sub_8087510();
+                }
+            }
+            break;
+        }
+    }
+
+    switch (a2)
+    {
+    case 23:
+        sUnknown_03000E10[a1] = 0x83;
+        break;
+    case 22:
+        sUnknown_03000E10[a1] = 0x82;
+        break;
+    case 26:
+        sUnknown_03000E10[a1] = 0x80;
+        if (a3->b)
+            c1_link_related_func_set(sub_80870B0);
+        break;
+    case 29:
+        if (sUnknown_03000E10[a1] == 0x82)
+            sUnknown_03000E10[a1] = 0x81;
+        break;
+    }
+}
+
+static void sub_8086F38(u16 *a1, s32 a2)
+{
+    struct UnkStruct_8054FF8 st;
+    s32 i;
+
+    for (i = 0; i < 4; i++)
+    {
+        u8 v5 = a1[i];
+        u16 v8 = 0;
+        sub_80872D8(i, a2, &st);
+        sub_8086D18(i, v5, &st, &v8);
+        if (sUnknown_03000E10[i] == 0x80)
+            v8 = sub_8087068(v5);
+        sub_808796C(i, v8);
+    }
+}
+
+static void sub_8086FA0(u16 a1)
+{
+    if (a1 >= 17 && a1 < 30)
+        gUnknown_03005DA8 = a1;
+    else
+        gUnknown_03005DA8 = 17;
+
+    if (gWirelessCommType != 0
+        && sub_8087690() > 1
+        && is_c1_link_related_active() == TRUE
+        && sub_8009F3C() == TRUE)
+    {
+        switch (a1)
+        {
+        case 17:
+        case 18:
+        case 19:
+        case 20:
+        case 21:
+        case 24:
+        case 25:
+            gUnknown_03005DA8 = 0;
+            break;
+        }
+    }
+}
+
+static u16 sub_808700C(u32 a1)
+{
+    if (gMain.heldKeys & DPAD_UP)
+        return 19;
+    else if (gMain.heldKeys & DPAD_DOWN)
+        return 18;
+    else if (gMain.heldKeys & DPAD_LEFT)
+        return 20;
+    else if (gMain.heldKeys & DPAD_RIGHT)
+        return 21;
+    else if (gMain.newKeys & START_BUTTON)
+        return 24;
+    else if (gMain.newKeys & A_BUTTON)
+        return 25;
+    else
+        return 17;
+}
+
+static u16 sub_8087068(u16 a1)
+{
+    switch (a1)
+    {
+    case 21:
+        return 4;
+    case 20:
+        return 3;
+    case 19:
+        return 1;
+    case 18:
+        return 2;
+    default:
+        return 0;
+    }
+}
+
+static void sub_808709C(u16 *a1)
+{
+    s32 i;
+    for (i = 0; i < 4; i++)
+        a1[i] = 17;
+}
+
+static u16 sub_80870B0(u32 a1)
+{
+    if (ScriptContext2_IsEnabled() == 1)
+        return 17;
+    if (sub_800B4DC() > 4)
+        return 27;
+    if (sub_8087690() <= 4)
+        return sub_808700C(a1);
+    return 28;
+}
+
+static u16 sub_80870EC(u32 a1)
+{
+    sub_8086C64();
+    return 17;
+}
+
+static u16 sub_80870F8(u32 a1)
+{
+    u16 retVal;
+    if (ScriptContext2_IsEnabled() == TRUE)
+    {
+        retVal = 17;
+    }
+    else
+    {
+        retVal = 26;
+        c1_link_related_func_set(sub_80870EC);
+    }
+    return retVal;
+}
+
+static u16 sub_808711C(u32 a1)
+{
+    u16 retVal;
+    if (sub_800B4DC() > 2)
+    {
+        retVal = 17;
+    }
+    else
+    {
+        retVal = 26;
+        ScriptContext2_Disable();
+        c1_link_related_func_set(sub_80870EC);
+    }
+    return retVal;
+}
+
+static u16 sub_8087140(u32 a1)
+{
+    u16 retVal;
+    if (sub_8087690() > 2)
+    {
+        retVal = 17;
+    }
+    else
+    {
+        retVal = 26;
+        ScriptContext2_Disable();
+        c1_link_related_func_set(sub_80870EC);
+    }
+    return retVal;
+}
+
+static u16 sub_8087164(u32 a1)
+{
+    sub_8086C64();
+    return 17;
+}
+
+static u16 sub_8087170(u32 linkPlayerId)
+{
+    if (sUnknown_03000E10[linkPlayerId] == 0x82)
+    {
+        if (gMain.newKeys & B_BUTTON)
+        {
+            c1_link_related_func_set(sub_8087164);
+            return 29;
+        }
+        else
+        {
+            return 17;
+        }
+    }
+    else
+    {
+        sub_8086C64();
+        return 17;
+    }
+}
+
+static u16 sub_80871AC(u32 a1)
+{
+    c1_link_related_func_set(sub_8087170);
+    return 22;
+}
+
+static u16 sub_80871C0(u32 a1)
+{
+    return 17;
+}
+
+static u16 sub_80871C4(u32 a1)
+{
+    if (sUnknown_03000E10[a1] != 0x83)
+        sub_8086C64();
+    if (sub_8086CA8(0x83) == TRUE)
+    {
+        ScriptContext1_SetupScript(EventScript_277513);
+        c1_link_related_func_set(sub_80871C0);
+    }
+    return 17;
+}
+
+static u16 sub_80871FC(u32 a1)
+{
+    c1_link_related_func_set(sub_80871C4);
+    return 23;
+}
+
+static u16 sub_8087210(u32 a1)
+{
+    return 17;
+}
+
+u32 sub_8087214(void)
+{
+    if (sub_8086CE0(0x83) == TRUE)
+        return 2;
+    if (sUnknown_03000E14 == sub_8087170 && sUnknown_03000E10[gUnknown_03005DB4] != 0x82)
+        return 0;
+    if (sUnknown_03000E14 == sub_8087164 && sUnknown_03000E10[gUnknown_03005DB4] == 0x81)
+        return 2;
+    if (sub_8086CA8(0x82) != 0)
+        return 1;
+    return 0;
+}
+
+bool32 sub_808727C(void)
+{
+    return sub_8086CE0(0x83);
+}
+
+u16 sub_8087288(void)
+{
+    c1_link_related_func_set(sub_80871AC);
+    return 0;
+}
+
+u16 sub_808729C(void)
+{
+    c1_link_related_func_set(sub_80870F8);
+    return 0;
+}
+
+u16 sub_80872B0(void)
+{
+    c1_link_related_func_set(sub_80871FC);
+    return 0;
+}
+
+u16 sub_80872C4(void)
+{
+    c1_link_related_func_set(sub_8087210);
+    return 0;
+}
+
+static void sub_80872D8(s32 linkPlayerId, s32 a2, struct UnkStruct_8054FF8 *a3)
+{
+    s16 x, y;
+
+    a3->a = linkPlayerId;
+    a3->b = (linkPlayerId == a2) ? 1 : 0;
+    a3->c = gLinkPlayerMapObjects[linkPlayerId].mode;
+    a3->d = sub_80878A0(linkPlayerId);
+    sub_8087878(linkPlayerId, &x, &y);
+    a3->sub.x = x;
+    a3->sub.y = y;
+    a3->sub.height = sub_80878C0(linkPlayerId);
+    a3->field_C = MapGridGetMetatileBehaviorAt(x, y);
+}
+
+static bool32 sub_8087340(struct UnkStruct_8054FF8 *a1)
+{
+    u8 v1 = a1->c;
+    if (v1 == 2 || v1 == 0)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+static bool32 sub_8087358(struct UnkStruct_8054FF8 *a1)
+{
+    u8 v1 = a1->c;
+    if (v1 == 2 || v1 == 0)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+static u8 *sub_8087370(struct UnkStruct_8054FF8 *a1)
+{
+    if (a1->c != 2)
+        return 0;
+    return sub_809D0F4(&a1->sub);
+}
+
+static bool32 sub_8087388(struct UnkStruct_8054FF8 *a1)
+{
+    if (a1->c != 2 && a1->c != 0)
+        return FALSE;
+    else if (!MetatileBehavior_IsSouthArrowWarp(a1->field_C))
+        return FALSE;
+    else if (a1->d != 1)
+        return FALSE;
+    else
+        return TRUE;
+}
+
+static const u8 *sub_80873B4(struct UnkStruct_8054FF8 *a1)
+{
+    struct MapPosition unkStruct;
+    u8 linkPlayerId;
+
+    if (a1->c && a1->c != 2)
+        return 0;
+
+    unkStruct = a1->sub;
+    unkStruct.x += gUnknown_08339D64[a1->d].x;
+    unkStruct.y += gUnknown_08339D64[a1->d].y;
+    unkStruct.height = 0;
+    linkPlayerId = GetLinkPlayerIdAt(unkStruct.x, unkStruct.y);
+
+    if (linkPlayerId != 4)
+    {
+        if (!a1->b)
+            return EventScript_TradeRoom_TooBusyToNotice;
+        else if (sUnknown_03000E10[linkPlayerId] != 0x80)
+            return EventScript_TradeRoom_TooBusyToNotice;
+        else if (!sub_80B39D4(linkPlayerId))
+            return EventScript_TradeRoom_ReadTrainerCard1;
+        else
+            return EventScript_TradeRoom_ReadTrainerCard2;
+    }
+
+    return sub_809C2C8(&unkStruct, a1->field_C, a1->d);
+}
+
+static u16 sub_8087480(const u8 *script)
+{
+    if (script == gUnknown_08277388)
+        return 10;
+    else if (script == gUnknown_082773A3)
+        return 9;
+    else if (script == gUnknown_082773BE)
+        return 10;
+    else if (script == gUnknown_082773D9)
+        return 9;
+    else if (script == gUnknown_0827741D)
+        return 10;
+    else if (script == gUnknown_08277432)
+        return 9;
+    else if (script == gUnknown_08277447)
+        return 10;
+    else if (script == gUnknown_0827745C)
+        return 9;
+    else if (script == gUnknown_08277374)
+        return 10;
+    else if (script == gUnknown_0827737E)
+        return 9;
+    else if (script == gUnknown_082773F5)
+        return 10;
+    else if (script == gUnknown_082773FF)
+        return 9;
+    else
+        return 0;
+}
+
+static void sub_8087510(void)
+{
+    ScriptContext2_Enable();
+}
+
+static void sub_808751C(void)
+{
+    PlaySE(SE_WIN_OPEN);
+    sub_809FA9C();
+    ScriptContext2_Enable();
+}
+
+static void sub_8087530(const u8 *script)
+{
+    PlaySE(SE_SELECT);
+    ScriptContext1_SetupScript(script);
+    ScriptContext2_Enable();
+}
+
+static void sub_808754C(void)
+{
+    PlaySE(SE_WIN_OPEN);
+    ScriptContext1_SetupScript(gUnknown_082774EF);
+    ScriptContext2_Enable();
+}
+
+static void sub_8087568(const u8 *script)
+{
+    PlaySE(SE_SELECT);
+    ScriptContext1_SetupScript(script);
+    ScriptContext2_Enable();
+}
+
+static void sub_8087584(void)
+{
+    ScriptContext1_SetupScript(gUnknown_08277509);
+    ScriptContext2_Enable();
+}
+
+bool32 sub_8087598(void)
+{
+    if (!is_c1_link_related_active())
+        return 0;
+    if (sub_800B4DC() >= 3)
+        sUnknown_03000E18 = 1;
+    else
+        sUnknown_03000E18 = 0;
+    return sUnknown_03000E18;
+}
+
+bool32 sub_80875C8(void)
+{
+    u8 temp;
+
+    if (sub_800B4DC() < 2)
+        return FALSE;
+    else if (is_c1_link_related_active() != TRUE)
+        return FALSE;
+    else if (sub_8009F3C() != TRUE)
+        return FALSE;
+    else if (sUnknown_03000E14 == sub_808711C)
+        return TRUE;
+    else if (sUnknown_03000E14 != sub_80870F8)
+        return FALSE;
+
+    temp = sUnknown_03000E18;
+    sUnknown_03000E18 = 0;
+
+    if (temp == TRUE)
+        return TRUE;
+    else if (gPaletteFade.active && gPaletteFade.softwareFadeFinishing)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+bool32 sub_8087634(void)
+{
+    if (sub_8087690() < 2)
+        return FALSE;
+    else if (is_c1_link_related_active() != TRUE)
+        return FALSE;
+    else if (sub_8009F3C() != TRUE)
+        return FALSE;
+    else if (sUnknown_03000E14 == sub_8087140)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+bool32 sub_808766C(void)
+{
+    if (gWirelessCommType != 0)
+        return FALSE;
+    else if (!sub_8009F3C())
+        return FALSE;
+    else
+        return TRUE;
+}
+
+static u32 sub_8087690(void)
+{
+    if (gWirelessCommType != 0)
+        return gUnknown_03005000.unk_9e8.unk_232;
+    else
+        return gLink.sendQueue.count;
+}
+
+static void ZeroLinkPlayerMapObject(struct LinkPlayerMapObject *linkPlayerMapObj)
+{
+    memset(linkPlayerMapObj, 0, sizeof(struct LinkPlayerMapObject));
+}
+
+void ZeroAllLinkPlayerMapObjects(void)
+{
+    memset(gLinkPlayerMapObjects, 0, sizeof(gLinkPlayerMapObjects));
+}
+
+static void ZeroMapObject(struct MapObject *mapObj)
+{
+    memset(mapObj, 0, sizeof(struct MapObject));
+}
+
+static void SpawnLinkPlayerMapObject(u8 linkPlayerId, s16 x, s16 y, u8 a4)
+{
+    u8 mapObjId = sub_808D4F4();
+    struct LinkPlayerMapObject *linkPlayerMapObj = &gLinkPlayerMapObjects[linkPlayerId];
+    struct MapObject *mapObj = &gMapObjects[mapObjId];
+
+    ZeroLinkPlayerMapObject(linkPlayerMapObj);
+    ZeroMapObject(mapObj);
+
+    linkPlayerMapObj->active = 1;
+    linkPlayerMapObj->linkPlayerId = linkPlayerId;
+    linkPlayerMapObj->mapObjId = mapObjId;
+    linkPlayerMapObj->mode = 0;
+
+    mapObj->active = 1;
+    mapObj->mapobj_bit_1 = a4;
+    mapObj->range.as_byte = 2;
+    mapObj->spriteId = 64;
+
+    InitLinkPlayerMapObjectPos(mapObj, x, y);
+}
+
+static void InitLinkPlayerMapObjectPos(struct MapObject *mapObj, s16 x, s16 y)
+{
+    mapObj->coords2.x = x;
+    mapObj->coords2.y = y;
+    mapObj->coords3.x = x;
+    mapObj->coords3.y = y;
+    sub_8093038(x, y, &mapObj->coords1.x, &mapObj->coords1.y);
+    mapObj->coords1.x += 8;
+    FieldObjectUpdateZCoord(mapObj);
+}
+
+static void sub_80877DC(u8 linkPlayerId, u8 a2)
+{
+    if (gLinkPlayerMapObjects[linkPlayerId].active)
+    {
+        u8 mapObjId = gLinkPlayerMapObjects[linkPlayerId].mapObjId;
+        struct MapObject *mapObj = &gMapObjects[mapObjId];
+        mapObj->range.as_byte = a2;
+    }
+}
+
+static void sub_808780C(u8 linkPlayerId)
+{
+    struct LinkPlayerMapObject *linkPlayerMapObj = &gLinkPlayerMapObjects[linkPlayerId];
+    u8 mapObjId = linkPlayerMapObj->mapObjId;
+    struct MapObject *mapObj = &gMapObjects[mapObjId];
+    if (mapObj->spriteId != 64 )
+        DestroySprite(&gSprites[mapObj->spriteId]);
+    linkPlayerMapObj->active = 0;
+    mapObj->active = 0;
+}
+
+static u8 sub_8087858(u8 linkPlayerId)
+{
+    u8 mapObjId = gLinkPlayerMapObjects[linkPlayerId].mapObjId;
+    struct MapObject *mapObj = &gMapObjects[mapObjId];
+    return mapObj->spriteId;
+}
+
+static void sub_8087878(u8 linkPlayerId, u16 *x, u16 *y)
+{
+    u8 mapObjId = gLinkPlayerMapObjects[linkPlayerId].mapObjId;
+    struct MapObject *mapObj = &gMapObjects[mapObjId];
+    *x = mapObj->coords2.x;
+    *y = mapObj->coords2.y;
+}
+
+static u8 sub_80878A0(u8 linkPlayerId)
+{
+    u8 mapObjId = gLinkPlayerMapObjects[linkPlayerId].mapObjId;
+    struct MapObject *mapObj = &gMapObjects[mapObjId];
+    return mapObj->range.as_byte;
+}
+
+static u8 sub_80878C0(u8 linkPlayerId)
+{
+    u8 mapObjId = gLinkPlayerMapObjects[linkPlayerId].mapObjId;
+    struct MapObject *mapObj = &gMapObjects[mapObjId];
+    return mapObj->mapobj_unk_0B_0;
+}
+
+static s32 sub_80878E4(u8 linkPlayerId)
+{
+    u8 mapObjId = gLinkPlayerMapObjects[linkPlayerId].mapObjId;
+    struct MapObject *mapObj = &gMapObjects[mapObjId];
+    return 16 - (s8)mapObj->mapobj_unk_21;
+}
+
+static u8 GetLinkPlayerIdAt(s16 x, s16 y)
+{
+    u8 i;
+    for (i = 0; i < 4; i++)
+    {
+        if (gLinkPlayerMapObjects[i].active
+         && (gLinkPlayerMapObjects[i].mode == 0 || gLinkPlayerMapObjects[i].mode == 2))
+        {
+            struct MapObject *mapObj = &gMapObjects[gLinkPlayerMapObjects[i].mapObjId];
+            if (mapObj->coords2.x == x && mapObj->coords2.y == y)
+                return i;
+        }
+    }
+    return 4;
+}
+
+static void sub_808796C(u8 linkPlayerId, u8 a2)
+{
+    struct LinkPlayerMapObject *linkPlayerMapObj = &gLinkPlayerMapObjects[linkPlayerId];
+    u8 mapObjId = linkPlayerMapObj->mapObjId;
+    struct MapObject *mapObj = &gMapObjects[mapObjId];
+
+    if (linkPlayerMapObj->active)
+    {
+        if (a2 > 10)
+            mapObj->mapobj_bit_2 = 1;
+        else
+            gUnknown_08339E00[gUnknown_08339DC8[linkPlayerMapObj->mode](linkPlayerMapObj, mapObj, a2)](linkPlayerMapObj, mapObj);
+    }
+}
+
+static u8 sub_80879D8(struct LinkPlayerMapObject *linkPlayerMapObj, struct MapObject *mapObj, u8 a3)
+{
+    return gUnknown_08339DD4[a3](linkPlayerMapObj, mapObj, a3);
+}
+
+static u8 sub_80879F8(struct LinkPlayerMapObject *linkPlayerMapObj, struct MapObject *mapObj, u8 a3)
+{
+    return 1;
+}
+
+static u8 sub_80879FC(struct LinkPlayerMapObject *linkPlayerMapObj, struct MapObject *mapObj, u8 a3)
+{
+    return gUnknown_08339DD4[a3](linkPlayerMapObj, mapObj, a3);
+}
+
+static u8 sub_8087A1C(struct LinkPlayerMapObject *linkPlayerMapObj, struct MapObject *mapObj, u8 a3)
+{
+    return 0;
+}
+
+static u8 sub_8087A20(struct LinkPlayerMapObject *linkPlayerMapObj, struct MapObject *mapObj, u8 a3)
+{
+    s16 x, y;
+
+    mapObj->range.as_byte = npc_something3(a3, mapObj->range.as_byte);
+    FieldObjectMoveDestCoords(mapObj, mapObj->range.as_byte, &x, &y);
+
+    if (LinkPlayerDetectCollision(linkPlayerMapObj->mapObjId, mapObj->range.as_byte, x, y))
+    {
+        return 0;
+    }
+    else
+    {
+        mapObj->mapobj_unk_21 = 16;
+        npc_coords_shift(mapObj, x, y);
+        FieldObjectUpdateZCoord(mapObj);
+        return 1;
+    }
+}
+
+static u8 sub_8087A88(struct LinkPlayerMapObject *linkPlayerMapObj, struct MapObject *mapObj, u8 a3)
+{
+    mapObj->range.as_byte = npc_something3(a3, mapObj->range.as_byte);
+    return 0;
+}
+
+static void sub_8087AA0(struct LinkPlayerMapObject *linkPlayerMapObj, struct MapObject *mapObj)
+{
+    linkPlayerMapObj->mode = 0;
+}
+
+static void sub_8087AA8(struct LinkPlayerMapObject *linkPlayerMapObj, struct MapObject *mapObj)
+{
+    mapObj->mapobj_unk_21--;
+    linkPlayerMapObj->mode = 1;
+    MoveCoords(mapObj->range.as_byte, &mapObj->coords1.x, &mapObj->coords1.y);
+    if (!mapObj->mapobj_unk_21)
+    {
+        npc_coords_shift_still(mapObj);
+        linkPlayerMapObj->mode = 2;
+    }
+}
+
+static u8 npc_something3(u8 a1, u8 a2)
+{
+    switch (a1 - 1)
+    {
+    case 0:
+    case 6:
+        return 2;
+    case 1:
+    case 7:
+        return 1;
+    case 2:
+    case 8:
+        return 3;
+    case 3:
+    case 9:
+        return 4;
+    }
+    return a2;
+}
+
+static u8 LinkPlayerDetectCollision(u8 selfMapObjId, u8 a2, s16 x, s16 y)
+{
+    u8 i;
+    for (i = 0; i < 16; i++)
+    {
+        if (i != selfMapObjId)
+        {
+            if ((gMapObjects[i].coords2.x == x && gMapObjects[i].coords2.y == y)
+             || (gMapObjects[i].coords3.x == x && gMapObjects[i].coords3.y == y))
+            {
+                return 1;
+            }
+        }
+    }
+    return MapGridIsImpassableAt(x, y);
+}
+
+static void CreateLinkPlayerSprite(u8 linkPlayerId, u8 gameVersion)
+{
+    struct LinkPlayerMapObject *linkPlayerMapObj = &gLinkPlayerMapObjects[linkPlayerId];
+    u8 mapObjId = linkPlayerMapObj->mapObjId;
+    struct MapObject *mapObj = &gMapObjects[mapObjId];
+    struct Sprite *sprite;
 
-// Static type declarations
+    if (linkPlayerMapObj->active)
+    {
+        switch (gameVersion)
+        {
+        case VERSION_FIRE_RED:
+        case VERSION_LEAF_GREEN:
+            mapObj->spriteId = AddPseudoFieldObject(sub_808BD6C(mapObj->mapobj_bit_1), SpriteCB_LinkPlayer, 0, 0, 0);
+            break;
+        case VERSION_RUBY:
+        case VERSION_SAPPHIRE:
+            mapObj->spriteId = AddPseudoFieldObject(sub_808BD7C(mapObj->mapobj_bit_1), SpriteCB_LinkPlayer, 0, 0, 0);
+            break;
+        case VERSION_EMERALD:
+            mapObj->spriteId = AddPseudoFieldObject(GetRivalAvatarGraphicsIdByStateIdAndGender(0, mapObj->mapobj_bit_1), SpriteCB_LinkPlayer, 0, 0, 0);
+            break;
+        }
 
-// Static RAM declarations
-IWRAM_DATA void *gUnknown_03000E0C;
-IWRAM_DATA u8 gUnknown_03000E10[4];
-IWRAM_DATA u8 (*gUnknown_03000E14)(u32);
-IWRAM_DATA u8 gUnknown_03000E18;
-IWRAM_DATA u8 gUnknown_03000E19;
-IWRAM_DATA void *rom4_c_unused_03000e1c;
+        sprite = &gSprites[mapObj->spriteId];
+        sprite->coordOffsetEnabled = TRUE;
+        sprite->data[0] = linkPlayerId;
+        mapObj->mapobj_bit_2 = 0;
+    }
+}
 
-// Static ROM declarations
+static void SpriteCB_LinkPlayer(struct Sprite *sprite)
+{
+    struct LinkPlayerMapObject *linkPlayerMapObj = &gLinkPlayerMapObjects[sprite->data[0]];
+    struct MapObject *mapObj = &gMapObjects[linkPlayerMapObj->mapObjId];
+    sprite->pos1.x = mapObj->coords1.x;
+    sprite->pos1.y = mapObj->coords1.y;
+    SetObjectSubpriorityByZCoord(mapObj->elevation, sprite, 1);
+    sprite->oam.priority = ZCoordToPriority(mapObj->elevation);
 
-// .rodata
+	if (!linkPlayerMapObj->mode)
+        StartSpriteAnim(sprite, FieldObjectDirectionToImageAnimId(mapObj->range.as_byte));
+    else
+        StartSpriteAnimIfDifferent(sprite, get_go_image_anim_num(mapObj->range.as_byte));
 
-// .text
+	sub_80979D4(sprite, 0);
+    if (mapObj->mapobj_bit_2)
+    {
+        sprite->invisible = ((sprite->data[7] & 4) >> 2);
+        sprite->data[7]++;
+    }
+}
diff --git a/src/pokeblock.c b/src/pokeblock.c
index b9d1d94c6..b9a1f6bf3 100644
--- a/src/pokeblock.c
+++ b/src/pokeblock.c
@@ -74,7 +74,7 @@ extern void (*gFieldCallback)(void);
 
 extern const u16 gUnknown_0860F074[];
 
-extern void c2_exit_to_overworld_2_switch(void);
+extern void CB2_ReturnToField(void);
 extern bool8 sub_81221EC(void);
 extern void sub_809882C(u8, u16, u8);
 extern void copy_textbox_border_tile_patterns_to_vram(u8, u16, u8);
@@ -374,7 +374,7 @@ void OpenPokeblockCaseInBattle(void)
 
 void OpenPokeblockCaseOnFeeder(void)
 {
-    OpenPokeblockCase(PBLOCK_CASE_FEEDER, c2_exit_to_overworld_2_switch);
+    OpenPokeblockCase(PBLOCK_CASE_FEEDER, CB2_ReturnToField);
 }
 
 static void CB2_PokeblockMenu(void)
diff --git a/src/region_map.c b/src/region_map.c
index 086c0ba68..f16787fc9 100644
--- a/src/region_map.c
+++ b/src/region_map.c
@@ -881,7 +881,7 @@ static void RegionMap_InitializeStateBasedOnPlayerLocation(void)
         return;
     }
 
-    switch (get_map_light_level_by_bank_and_number(gSaveBlock1Ptr->location.mapGroup, gSaveBlock1Ptr->location.mapNum))
+    switch (GetMapTypeByGroupAndId(gSaveBlock1Ptr->location.mapGroup, gSaveBlock1Ptr->location.mapNum))
     {
         default:
         case 1:
@@ -904,7 +904,7 @@ static void RegionMap_InitializeStateBasedOnPlayerLocation(void)
         case 7:
             if (gMapHeader.flags & 0x02)
             {
-                mapHeader = get_mapheader_by_bank_and_number(gSaveBlock1Ptr->warp4.mapGroup, gSaveBlock1Ptr->warp4.mapNum);
+                mapHeader = Overworld_GetMapHeaderByGroupAndId(gSaveBlock1Ptr->warp4.mapGroup, gSaveBlock1Ptr->warp4.mapNum);
                 gRegionMap->mapSecId = mapHeader->regionMapSectionId;
                 gRegionMap->playerIsInCave = TRUE;
                 mapWidth = mapHeader->mapData->width;
@@ -923,7 +923,7 @@ static void RegionMap_InitializeStateBasedOnPlayerLocation(void)
             }
             break;
         case 9:
-            mapHeader = get_mapheader_by_bank_and_number((u16)gSaveBlock1Ptr->warp2.mapGroup, (u16)gSaveBlock1Ptr->warp2.mapNum);
+            mapHeader = Overworld_GetMapHeaderByGroupAndId((u16)gSaveBlock1Ptr->warp2.mapGroup, (u16)gSaveBlock1Ptr->warp2.mapNum);
             gRegionMap->mapSecId = mapHeader->regionMapSectionId;
             gRegionMap->playerIsInCave = TRUE;
             mapWidth = mapHeader->mapData->width;
@@ -937,12 +937,12 @@ static void RegionMap_InitializeStateBasedOnPlayerLocation(void)
             if (gRegionMap->mapSecId != MAPSEC_DYNAMIC)
             {
                 storedWarp = &gSaveBlock1Ptr->warp4;
-                mapHeader = get_mapheader_by_bank_and_number(storedWarp->mapGroup, storedWarp->mapNum);
+                mapHeader = Overworld_GetMapHeaderByGroupAndId(storedWarp->mapGroup, storedWarp->mapNum);
             }
             else
             {
                 storedWarp = &gSaveBlock1Ptr->warp2;
-                mapHeader = get_mapheader_by_bank_and_number(storedWarp->mapGroup, storedWarp->mapNum);
+                mapHeader = Overworld_GetMapHeaderByGroupAndId(storedWarp->mapGroup, storedWarp->mapNum);
                 gRegionMap->mapSecId = mapHeader->regionMapSectionId;
             }
             if (RegionMap_IsPlayerInCave(gRegionMap->mapSecId))
@@ -1065,7 +1065,7 @@ static void RegionMap_InitializeStateBasedOnSSTidalLocation(void)
             break;
         default:
         case 0:
-            mapHeader = get_mapheader_by_bank_and_number(mapGroup, mapNum);
+            mapHeader = Overworld_GetMapHeaderByGroupAndId(mapGroup, mapNum);
 
             gRegionMap->mapSecId = mapHeader->regionMapSectionId;
             dimensionScale = mapHeader->mapData->width / gRegionMapEntries[gRegionMap->mapSecId].width;
@@ -1581,7 +1581,7 @@ void MCB2_FlyMap(void)
             gUnknown_0203A148 = malloc(sizeof(*gUnknown_0203A148));
             if (gUnknown_0203A148 == NULL)
             {
-                SetMainCallback2(sub_8086194);
+                SetMainCallback2(CB2_ReturnToFieldWithOpenMenu);
             }
             else
             {
diff --git a/src/reset_save_heap.c b/src/reset_save_heap.c
index 81321b86d..1d90448b2 100644
--- a/src/reset_save_heap.c
+++ b/src/reset_save_heap.c
@@ -26,5 +26,5 @@ void sub_81700F8(void)
         Sav2_ClearSetDefault();
     SetPokemonCryStereo(gSaveBlock2Ptr->optionsSound);
     InitHeap(gHeap, HEAP_SIZE);
-    SetMainCallback2(sub_8086230);
+    SetMainCallback2(CB2_ContinueSavedGame);
 }
diff --git a/src/safari_zone.c b/src/safari_zone.c
index dd3cf3733..ab5c38f3a 100644
--- a/src/safari_zone.c
+++ b/src/safari_zone.c
@@ -30,9 +30,9 @@ extern void sub_80EE44C(u8, u8);
 extern void IncrementGameStat(u8 index);
 extern void ScriptContext1_SetupScript(u8*);
 extern void ScriptContext2_RunNewScript(u8*);
-extern void c2_exit_to_overworld_2_switch(void);
-extern void c2_exit_to_overworld_1_continue_scripts_restart_music(void);
-extern void c2_load_new_map(void);
+extern void CB2_ReturnToField(void);
+extern void CB2_ReturnToFieldContinueScript(void);
+extern void CB2_LoadMap(void);
 extern void sub_80AF6F0(void);
 extern void ScriptContext1_Stop(void);
 extern void warp_in(void);
@@ -112,20 +112,20 @@ void CB2_EndSafariBattle(void)
         sSafariZoneCaughtMons++;
     if (gNumSafariBalls != 0)
     {
-        SetMainCallback2(c2_exit_to_overworld_2_switch);
+        SetMainCallback2(CB2_ReturnToField);
     }
     else if (gBattleOutcome == B_OUTCOME_NO_SAFARI_BALLS)
     {
         ScriptContext2_RunNewScript(EventScript_2A4B4C);
         warp_in();
         gFieldCallback = sub_80AF6F0;
-        SetMainCallback2(c2_load_new_map);
+        SetMainCallback2(CB2_LoadMap);
     }
     else if (gBattleOutcome == B_OUTCOME_CAUGHT)
     {
         ScriptContext1_SetupScript(EventScript_2A4B9B);
         ScriptContext1_Stop();
-        SetMainCallback2(c2_exit_to_overworld_1_continue_scripts_restart_music);
+        SetMainCallback2(CB2_ReturnToFieldContinueScript);
     }
 }
 
diff --git a/src/scrcmd.c b/src/scrcmd.c
index deb170c68..ef3fcbcac 100644
--- a/src/scrcmd.c
+++ b/src/scrcmd.c
@@ -2054,7 +2054,7 @@ bool8 ScrCmd_playslotmachine(struct ScriptContext *ctx)
 {
     u8 slotMachineIndex = VarGet(ScriptReadHalfword(ctx));
 
-    PlaySlotMachine(slotMachineIndex, c2_exit_to_overworld_1_continue_scripts_restart_music);
+    PlaySlotMachine(slotMachineIndex, CB2_ReturnToFieldContinueScript);
     ScriptContext1_Stop();
     return TRUE;
 }
diff --git a/src/script.c b/src/script.c
index 5a1c5daa9..8c868128b 100644
--- a/src/script.c
+++ b/src/script.c
@@ -243,7 +243,7 @@ void ScriptContext2_RunNewScript(const u8 *ptr)
 
 u8 *mapheader_get_tagged_pointer(u8 tag)
 {
-    u8 *mapScripts = gMapHeader.mapScripts;
+    const u8 *mapScripts = gMapHeader.mapScripts;
 
     if (!mapScripts)
         return NULL;
diff --git a/src/secret_base.c b/src/secret_base.c
index e3c06a75d..df754f2a0 100644
--- a/src/secret_base.c
+++ b/src/secret_base.c
@@ -3,6 +3,7 @@
 #include "global.h"
 #include "constants/decorations.h"
 #include "malloc.h"
+#include "main.h"
 #include "task.h"
 #include "palette.h"
 #include "list_menu.h"
@@ -39,6 +40,10 @@
 #include "tv.h"
 #include "secret_base.h"
 
+extern void (*gFieldCallback)(void);
+
+extern void mapldr_default(void);
+
 // Static type declarations
 
 struct SecretBaseListMenuBuffer {
@@ -244,7 +249,7 @@ void sub_80E8C98(void)
 
 void sub_80E8CB0(s16 *xPtr, s16 *yPtr, u16 tile)
 {
-    struct MapData *mapData;
+    const struct MapData *mapData;
     s16 x;
     s16 y;
 
@@ -386,7 +391,7 @@ void sub_80E8FD0(u8 taskId)
             sub_80E8F9C();
             warp_in();
             gFieldCallback = sub_80AF168;
-            SetMainCallback2(c2_load_new_map);
+            SetMainCallback2(CB2_LoadMap);
             DestroyTask(taskId);
             break;
     }
@@ -444,7 +449,7 @@ void sub_80E916C(u8 taskId)
         Overworld_SetWarpDestination(gSaveBlock1Ptr->location.mapGroup, gSaveBlock1Ptr->location.mapNum, -1, gUnknown_0858CFE8[idx + 2], gUnknown_0858CFE8[idx + 3]);
         warp_in();
         gFieldCallback = sub_80E9108;
-        SetMainCallback2(c2_load_new_map);
+        SetMainCallback2(CB2_LoadMap);
         DestroyTask(taskId);
     }
 }
@@ -642,7 +647,7 @@ void sub_80E96A4(u8 taskId)
             copy_saved_warp2_bank_and_enter_x_to_warp1(0x7e);
             warp_in();
             gFieldCallback = mapldr_default;
-            SetMainCallback2(c2_load_new_map);
+            SetMainCallback2(CB2_LoadMap);
             ScriptContext2_Disable();
             DestroyTask(taskId);
             break;
@@ -773,7 +778,7 @@ void sub_80E9AD0(void)
     u16 i;
     u16 j;
     s16 tile;
-    struct MapEvents *events;
+    const struct MapEvents *events;
 
     events = gMapHeader.events;
     for (i = 0; i < events->bgEventCount; i ++)
diff --git a/src/smokescreen.c b/src/smokescreen.c
new file mode 100644
index 000000000..9b37cd234
--- /dev/null
+++ b/src/smokescreen.c
@@ -0,0 +1,71 @@
+#include "global.h"
+#include "data2.h"
+#include "decompress.h"
+#include "sprite.h"
+#include "util.h"
+
+static void sub_8075370(struct Sprite *);
+
+u8 sub_807521C(s16 x, s16 y, u8 a3)
+{
+    u8 mainSpriteId;
+    u8 spriteId1, spriteId2, spriteId3, spriteId4;
+    struct Sprite *mainSprite;
+
+    if (GetSpriteTileStartByTag(gUnknown_0831C620.tag) == 0xFFFF)
+    {
+        LoadCompressedObjectPicUsingHeap(&gUnknown_0831C620);
+        LoadCompressedObjectPaletteUsingHeap(&gUnknown_0831C628);
+    }
+
+    mainSpriteId = CreateInvisibleSpriteWithCallback(sub_8075370);
+    mainSprite = &gSprites[mainSpriteId];
+    mainSprite->data[1] = a3;
+
+    spriteId1 = CreateSprite(&gUnknown_0831C688, x - 16, y - 16, 2);
+    gSprites[spriteId1].data[0] = mainSpriteId;
+    mainSprite->data[0]++;
+    AnimateSprite(&gSprites[spriteId1]);
+
+    spriteId2 = CreateSprite(&gUnknown_0831C688, x, y - 16, 2);
+    gSprites[spriteId2].data[0] = mainSpriteId;
+    mainSprite->data[0]++;
+    StartSpriteAnim(&gSprites[spriteId2], 1);
+    AnimateSprite(&gSprites[spriteId2]);
+
+    spriteId3 = CreateSprite(&gUnknown_0831C688, x - 16, y, 2);
+    gSprites[spriteId3].data[0] = mainSpriteId;
+    mainSprite->data[0]++;
+    StartSpriteAnim(&gSprites[spriteId3], 2);
+    AnimateSprite(&gSprites[spriteId3]);
+
+    spriteId4 = CreateSprite(&gUnknown_0831C688, x, y, 2);
+    gSprites[spriteId4].data[0] = mainSpriteId;
+    mainSprite->data[0]++;
+    StartSpriteAnim(&gSprites[spriteId4], 3);
+    AnimateSprite(&gSprites[spriteId4]);
+
+    return mainSpriteId;
+}
+
+static void sub_8075370(struct Sprite *sprite)
+{
+    if (!sprite->data[0])
+    {
+        FreeSpriteTilesByTag(gUnknown_0831C620.tag);
+        FreeSpritePaletteByTag(gUnknown_0831C628.tag);
+        if (!sprite->data[1])
+            DestroySprite(sprite);
+        else
+            sprite->callback = SpriteCallbackDummy;
+    }
+}
+
+void sub_80753B4(struct Sprite *sprite)
+{
+    if (sprite->animEnded)
+    {
+        gSprites[sprite->data[0]].data[0]--;
+        DestroySprite(sprite);
+    }
+}
diff --git a/src/tv.c b/src/tv.c
index fbe39fde0..112f2b041 100644
--- a/src/tv.c
+++ b/src/tv.c
@@ -1957,11 +1957,11 @@ void sub_80EDB44(void)
         show->rivalTrainer.badgeCount = nBadges;
         if (IsNationalPokedexEnabled())
         {
-            show->rivalTrainer.dexCount = pokedex_count(0x01);
+            show->rivalTrainer.dexCount = GetNationalPokedexCount(0x01);
         }
         else
         {
-            show->rivalTrainer.dexCount = sub_80C0844(0x01);
+            show->rivalTrainer.dexCount = GetHoennPokedexCount(0x01);
         }
         show->rivalTrainer.location = gMapHeader.regionMapSectionId;
         show->rivalTrainer.mapDataId = gMapHeader.mapDataId;
@@ -3633,7 +3633,7 @@ void ChangePokemonNickname(void)
 void ChangePokemonNickname_CB(void)
 {
     SetMonData(&gPlayerParty[gSpecialVar_0x8004], MON_DATA_NICKNAME, gStringVar2);
-    c2_exit_to_overworld_1_continue_scripts_restart_music();
+    CB2_ReturnToFieldContinueScript();
 }
 
 void ChangeBoxPokemonNickname(void)
@@ -3649,7 +3649,7 @@ void ChangeBoxPokemonNickname(void)
 void ChangeBoxPokemonNickname_CB(void)
 {
     SetBoxMonNickFromAnyBox(gSpecialVar_MonBoxId, gSpecialVar_MonBoxPos, gStringVar2);
-    c2_exit_to_overworld_1_continue_scripts_restart_music();
+    CB2_ReturnToFieldContinueScript();
 }
 
 void TV_CopyNicknameToStringVar1AndEnsureTerminated(void)
diff --git a/src/walda_phrase.c b/src/walda_phrase.c
index 59fd3fedb..04789bfb5 100644
--- a/src/walda_phrase.c
+++ b/src/walda_phrase.c
@@ -14,7 +14,7 @@ extern const u8 gText_Peekaboo[];
 extern u8 *GetWaldaPhrasePtr(void);
 extern bool32 IsWaldaPhraseEmpty(void);
 extern void sub_80AF168(void);
-extern void c2_exit_to_overworld_2_switch(void);
+extern void CB2_ReturnToField(void);
 extern void SetWaldaPhrase(const u8 *src);
 extern void SetWaldaWallpaperPatternId(u8 patternId);
 extern void SetWaldaWallpaperIconId(u8 iconId);
@@ -80,7 +80,7 @@ static void CB2_HandleGivenWaldaPhrase(void)
 
     StringCopy(gStringVar1, GetWaldaPhrasePtr());
     gFieldCallback = sub_80AF168;
-    SetMainCallback2(c2_exit_to_overworld_2_switch);
+    SetMainCallback2(CB2_ReturnToField);
 }
 
 static u32 GetWaldaPhraseInputCase(u8 *inputPtr)