Decompile event_data.s

7 files changed, 335 insertions, 10 deletions

diff --git a/src/event_data.c b/src/event_data.c
new file mode 100644
index 000000000..105567fe8
--- /dev/null
+++ b/src/event_data.c
@@ -0,0 +1,325 @@
+#include "global.h"
+#include "event_data.h"
+#include "item_menu.h"
+#include "quest_log.h"
+
+static bool8 IsFlagOrVarStoredInQuestLog(u16 idx, u8 a1);
+
+EWRAM_DATA u16 gSpecialVar_0x8000 = 0;
+EWRAM_DATA u16 gSpecialVar_0x8001 = 0;
+EWRAM_DATA u16 gSpecialVar_0x8002 = 0;
+EWRAM_DATA u16 gSpecialVar_0x8003 = 0;
+EWRAM_DATA u16 gSpecialVar_0x8004 = 0;
+EWRAM_DATA u16 gSpecialVar_0x8005 = 0;
+EWRAM_DATA u16 gSpecialVar_0x8006 = 0;
+EWRAM_DATA u16 gSpecialVar_0x8007 = 0;
+EWRAM_DATA u16 gSpecialVar_0x8008 = 0;
+EWRAM_DATA u16 gSpecialVar_0x8009 = 0;
+EWRAM_DATA u16 gSpecialVar_0x800A = 0;
+EWRAM_DATA u16 gSpecialVar_0x800B = 0;
+EWRAM_DATA u16 gSpecialVar_Result = 0;
+EWRAM_DATA u16 gSpecialVar_LastTalked = 0;
+EWRAM_DATA u16 gSpecialVar_Facing = 0;
+EWRAM_DATA u16 gSpecialVar_MonBoxId = 0;
+EWRAM_DATA u16 gSpecialVar_MonBoxPos = 0;
+EWRAM_DATA u16 gSpecialVar_TextColor = 0;
+EWRAM_DATA u16 gSpecialVar_PrevTextColor = 0;
+EWRAM_DATA u16 gUnknown_20370DE = 0;
+EWRAM_DATA u8 gUnknown_20370E0[SPECIAL_FLAGS_COUNT] = {};
+
+u16 gUnknown_300507C;
+
+extern u16 *const gSpecialVars[];
+
+void InitEventData(void)
+{
+    memset(gSaveBlock1Ptr->flags, 0, FLAGS_COUNT);
+    memset(gSaveBlock1Ptr->vars, 0, VARS_COUNT * 2);
+    memset(gUnknown_20370E0, 0, SPECIAL_FLAGS_COUNT);
+}
+
+void sub_806E110(void)
+{
+    memset(gSaveBlock1Ptr->flags, 0, 4);
+    memset(gSaveBlock1Ptr->vars, 0, 16 * 2);
+    FlagClear(FLAG_SYS_WHITE_FLUTE_ACTIVE);
+    FlagClear(FLAG_SYS_BLACK_FLUTE_ACTIVE);
+    FlagClear(FLAG_SYS_STRENGTH_ACTIVE);
+    FlagClear(FLAG_SYS_SPECIAL_WILD_BATTLE);
+    FlagClear(FLAG_SYS_INFORMED_OF_LOCAL_WIRELESS_PLAYER);
+}
+
+void sub_806E168(void)
+{
+    u16 *ptr = GetVarPointer(VAR_0x403C);
+    gSaveBlock2Ptr->pokedex.nationalMagic = 0;
+    *ptr = 0;
+    FlagClear(FLAG_0x838);
+}
+
+void sub_806E190(void)
+{
+    u16 *ptr = GetVarPointer(VAR_0x403C);
+    gSaveBlock2Ptr->pokedex.nationalMagic = 0xDA;
+    *ptr = 0x0302;
+    FlagSet(FLAG_0x838);
+}
+
+bool32 sub_806E1C0(void)
+{
+    if (gSaveBlock2Ptr->pokedex.nationalMagic != 0xDA)
+        return FALSE;
+    if (VarGet(VAR_0x403C) != 0x0302)
+        return FALSE;
+    if (!FlagGet(FLAG_0x838))
+        return FALSE;
+    return TRUE;
+}
+
+void sub_806E204(void)
+{
+    u16 *ptr = GetVarPointer(VAR_0x404E);
+    gSaveBlock2Ptr->pokedex.unknown2 = 0;
+    *ptr = 0;
+    FlagClear(FLAG_SYS_NATIONAL_DEX);
+}
+
+void EnableNationalPokedex(void)
+{
+    u16 *ptr = GetVarPointer(VAR_0x404E);
+    gSaveBlock2Ptr->pokedex.unknown2 = 0xB9;
+    *ptr = 0x6258;
+    FlagSet(FLAG_SYS_NATIONAL_DEX);
+}
+
+bool32 IsNationalPokedexEnabled(void)
+{
+    if (gSaveBlock2Ptr->pokedex.unknown2 != 0xB9)
+        return FALSE;
+    if (VarGet(VAR_0x404E) != 0x6258)
+        return FALSE;
+    if (!FlagGet(FLAG_SYS_NATIONAL_DEX))
+        return FALSE;
+    return TRUE;
+}
+
+void DisableMysteryGift(void)
+{
+    FlagClear(FLAG_SYS_MYSTERY_GIFT_ENABLED);
+}
+
+void EnableMysteryGift(void)
+{
+    FlagSet(FLAG_SYS_MYSTERY_GIFT_ENABLED);
+}
+
+bool32 IsMysteryGiftEnabled(void)
+{
+    return FlagGet(FLAG_SYS_MYSTERY_GIFT_ENABLED);
+}
+
+void sub_806E2D0(void)
+{
+    FlagClear(FLAG_MYSTERY_EVENT_DONE);
+    FlagClear(FLAG_0x3D9);
+    FlagClear(FLAG_0x3DA);
+    FlagClear(FLAG_0x3DB);
+    FlagClear(FLAG_0x3DC);
+    FlagClear(FLAG_0x3DD);
+    FlagClear(FLAG_0x3DE);
+    FlagClear(FLAG_0x3DF);
+    FlagClear(FLAG_0x3E0);
+    FlagClear(FLAG_0x3E1);
+    FlagClear(FLAG_0x3E2);
+    FlagClear(FLAG_0x3E3);
+    FlagClear(FLAG_0x3E4);
+    FlagClear(FLAG_0x3E5);
+    FlagClear(FLAG_0x3E6);
+    FlagClear(FLAG_0x3E7);
+}
+
+void sub_806E370(void)
+{
+    VarSet(VAR_EVENT_PICHU_SLOT, 0);
+    VarSet(VAR_0x40B6, 0);
+    VarSet(VAR_0x40B7, 0);
+    VarSet(VAR_0x40B8, 0);
+    VarSet(VAR_0x40B9, 0);
+    VarSet(VAR_0x40BA, 0);
+    VarSet(VAR_0x40BB, 0);
+    VarSet(VAR_0x40BC, 0);
+    VarSet(VAR_ALTERING_CAVE_WILD_SET, 0);
+}
+
+void DisableResetRTC(void)
+{
+    VarSet(VAR_0x4032, 0);
+    FlagClear(FLAG_0x837);
+}
+
+void EnableResetRTC(void)
+{
+    VarSet(VAR_0x4032, 0x0920);
+    FlagSet(FLAG_0x837);
+}
+
+bool32 CanResetRTC(void)
+{
+    if (!FlagGet(FLAG_0x837))
+        return FALSE;
+    if (VarGet(VAR_0x4032) != 0x0920)
+        return FALSE;
+    return TRUE;
+}
+
+u16 *GetVarPointer(u16 idx)
+{
+    u16 *ptr;
+    if (idx < VARS_START)
+        return NULL;
+    if (idx < SPECIAL_VARS_START)
+    {
+        switch (gUnknown_3005E88)
+        {
+        case 0:
+        default:
+            break;
+        case 1:
+            ptr = sub_8112D40(0, idx);
+            if (ptr != NULL)
+                gSaveBlock1Ptr->vars[idx - VARS_START] = *ptr;
+            break;
+        case 2:
+            if (IsFlagOrVarStoredInQuestLog(idx - VARS_START, 1) == TRUE)
+            {
+                gUnknown_300507C = idx - VARS_START;
+                sub_8112DB0(0, idx, gSaveBlock1Ptr->vars[idx - VARS_START]);
+            }
+            break;
+        }
+        return &gSaveBlock1Ptr->vars[idx - VARS_START];
+    }
+    return gSpecialVars[idx - SPECIAL_VARS_START];
+}
+
+static bool8 IsFlagOrVarStoredInQuestLog(u16 idx, u8 a1)
+{
+    if (a1 == 0)
+    {
+        if (idx < STORY_FLAGS_START)
+            return FALSE;
+        if (idx >= SYS_FLAGS && idx < PERMA_SYS_FLAGS_START)
+            return FALSE;
+    }
+    else
+    {
+        if (idx < VAR_0x4030 - VARS_START)
+            return FALSE;
+        if (idx >= VAR_MAP_SCENE_PALLET_TOWN_OAK - VARS_START && idx < VAR_PORTHOLE - VARS_START)
+            return FALSE;
+    }
+    return TRUE;
+}
+
+u16 VarGet(u16 idx)
+{
+    u16 *ptr = GetVarPointer(idx);
+    if (ptr == NULL)
+        return idx;
+    return *ptr;
+}
+
+bool8 VarSet(u16 idx, u16 val)
+{
+    u16 *ptr = GetVarPointer(idx);
+    if (ptr == NULL)
+        return FALSE;
+    *ptr = val;
+    return TRUE;
+}
+
+u8 VarGetFieldObjectGraphicsId(u8 idx)
+{
+    return VarGet(0x4010 + idx);
+}
+
+u8 *GetFlagAddr(u16 idx)
+{
+    u8 *ptr;
+    if (idx == 0)
+        return NULL;
+    if (idx < SPECIAL_FLAGS_START)
+    {
+        switch (gUnknown_3005E88)
+        {
+        case 0:
+        default:
+            break;
+        case 1:
+            ptr = sub_8112D40(1, idx);
+            if (ptr != NULL)
+                gSaveBlock1Ptr->flags[idx >> 3] = *ptr;
+            break;
+        case 2:
+            if (IsFlagOrVarStoredInQuestLog(idx, 0) == TRUE)
+            {
+                gUnknown_300507C = idx;
+                sub_8112DB0(1, idx, gSaveBlock1Ptr->flags[idx / 8]);
+            }
+            break;
+        }
+        return &gSaveBlock1Ptr->flags[idx / 8];
+    }
+    return &gUnknown_20370E0[(idx - SPECIAL_FLAGS_START) / 8];
+}
+
+bool8 FlagSet(u16 idx)
+{
+    u8 *ptr = GetFlagAddr(idx);
+    if (ptr != NULL)
+        *ptr |= 1 << (idx & 7);
+    return FALSE;
+}
+
+bool8 FlagClear(u16 idx)
+{
+    u8 *ptr = GetFlagAddr(idx);
+    if (ptr != NULL)
+        *ptr &= ~(1 << (idx & 7));
+    return FALSE;
+}
+
+bool8 FlagGet(u16 idx)
+{
+    u8 *ptr = GetFlagAddr(idx);
+    if (ptr == NULL)
+        return FALSE;
+    if (!(*ptr & 1 << (idx & 7)))
+        return FALSE;
+    return TRUE;
+}
+
+void ResetSpecialVars(void)
+{
+    gSpecialVar_0x8000 = 0;
+    gSpecialVar_0x8001 = 0;
+    gSpecialVar_0x8002 = 0;
+    gSpecialVar_0x8003 = 0;
+    gSpecialVar_0x8004 = 0;
+    gSpecialVar_0x8005 = 0;
+    gSpecialVar_0x8006 = 0;
+    gSpecialVar_0x8007 = 0;
+    gSpecialVar_0x8008 = 0;
+    gSpecialVar_0x8009 = 0;
+    gSpecialVar_0x800A = 0;
+    gSpecialVar_0x800B = 0;
+    gSpecialVar_Facing = 0;
+    gSpecialVar_Result = 0;
+    gSpecialVar_ItemId = 0;
+    gSpecialVar_LastTalked = 0;
+    gSpecialVar_MonBoxId = 0;
+    gSpecialVar_MonBoxPos = 0;
+    gSpecialVar_TextColor = 0;
+    gSpecialVar_PrevTextColor = 0;
+    gUnknown_20370DE = 0;
+}
diff --git a/src/main_menu.c b/src/main_menu.c
index cf788fa21..542bcf8ea 100644
--- a/src/main_menu.c
+++ b/src/main_menu.c
@@ -240,7 +240,7 @@ static void Task_SetWin0BldRegsAndCheckSaveFile(u8 taskId)
         {
         case SAVE_STATUS_OK:
             LoadUserFrameToBg(0);
-            if (Flag_0x839_IsSet() == TRUE)
+            if (IsMysteryGiftEnabled() == TRUE)
             {
                 gTasks[taskId].tMenuType = MAIN_MENU_MYSTERYGIFT;
             }
@@ -259,7 +259,7 @@ static void Task_SetWin0BldRegsAndCheckSaveFile(u8 taskId)
             SetStdFrame0OnBg(0);
             gTasks[taskId].tMenuType = MAIN_MENU_CONTINUE;
             PrintSaveErrorStatus(taskId, gText_SaveFileCorruptedPrevWillBeLoaded);
-            if (Flag_0x839_IsSet() == TRUE)
+            if (IsMysteryGiftEnabled() == TRUE)
             {
                 gTasks[taskId].tMenuType = MAIN_MENU_MYSTERYGIFT;
             }
diff --git a/src/menews_jisan.c b/src/menews_jisan.c
index 2f6172bbc..4605b162b 100644
--- a/src/menews_jisan.c
+++ b/src/menews_jisan.c
@@ -59,7 +59,7 @@ u16 sub_8146CE8(void)
     struct MysteryEventStruct *r4 = sub_8143D94();
     u16 r5;
 
-    if (!Flag_0x839_IsSet() || !ValidateReceivedWonderNews())
+    if (!IsMysteryGiftEnabled() || !ValidateReceivedWonderNews())
         return 0;
 
     r5 = sub_8146E0C(r4);
diff --git a/src/new_game.c b/src/new_game.c
index bede6ce94..e27c862bb 100644
--- a/src/new_game.c
+++ b/src/new_game.c
@@ -103,7 +103,7 @@ void ResetMenuAndMonGlobals(void)
     BerryPouch_CursorResetToTop();
     sub_811089C();
     sub_8083214(Random());
-    sub_806E6FC();
+    ResetSpecialVars();
 }
 
 void NewGameInitData(void)
diff --git a/src/quest_log.c b/src/quest_log.c
index 11d57341b..11046b59f 100644
--- a/src/quest_log.c
+++ b/src/quest_log.c
@@ -982,7 +982,7 @@ void sub_8111274(u8 a0, u8 a1)
 static void sub_8111368(void)
 {
     gUnknown_203ADFA = 2;
-    sub_806E6FC();
+    ResetSpecialVars();
     ClearBag();
     ClearPCItemSlots();
     if (sub_8110AC8() == 1)
@@ -1231,7 +1231,7 @@ static void sub_8111914(void)
 
 static void sub_8111984(void)
 {
-    sub_806E6FC();
+    ResetSpecialVars();
     Save_ResetSaveCounters();
     Save_LoadGameData(0);
     SetMainCallback2(sub_8057430);
diff --git a/src/scrcmd.c b/src/scrcmd.c
index ae994fceb..7a70d09c7 100644
--- a/src/scrcmd.c
+++ b/src/scrcmd.c
@@ -1263,8 +1263,8 @@ bool8 ScrCmd_release(struct ScriptContext *ctx)
 
 bool8 ScrCmd_textcolor(struct ScriptContext *ctx)
 {
-    gUnknown_20370DC = gUnknown_20370DA;
-    gUnknown_20370DA = ScriptReadByte(ctx);
+    gSpecialVar_PrevTextColor = gSpecialVar_TextColor;
+    gSpecialVar_TextColor = ScriptReadByte(ctx);
     return FALSE;
 }
 
diff --git a/src/trainer_tower.c b/src/trainer_tower.c
index c5631ee1b..d74da5542 100644
--- a/src/trainer_tower.c
+++ b/src/trainer_tower.c
@@ -920,8 +920,8 @@ void sub_815E068(u8 battleType, u8 facilityClass)
             }
             break;
     }
-    gUnknown_20370DC = gUnknown_20370DA;
-    gUnknown_20370DA = r5;
+    gSpecialVar_PrevTextColor = gSpecialVar_TextColor;
+    gSpecialVar_TextColor = r5;
 }
 
 void sub_815E114(void)