Merge pull request #102 from PikalaxALT/field_fadetransition

Field fadetransition

2 files changed, 966 insertions, 1 deletions

diff --git a/src/field_fadetransition.c b/src/field_fadetransition.c
new file mode 100644
index 000000000..b8ed41c06
--- /dev/null
+++ b/src/field_fadetransition.c
@@ -0,0 +1,965 @@
+#include "global.h"
+#include "palette.h"
+#include "field_fadetransition.h"
+#include "overworld.h"
+#include "fldeff.h"
+#include "field_weather.h"
+#include "map_preview_screen.h"
+#include "field_player_avatar.h"
+#include "task.h"
+#include "script.h"
+#include "cable_club.h"
+#include "fieldmap.h"
+#include "metatile_behavior.h"
+#include "quest_log.h"
+#include "link.h"
+#include "map_obj_80688E4.h"
+#include "sound.h"
+#include "field_door.h"
+#include "field_effect.h"
+#include "field_screen_effect.h"
+#include "field_map_obj.h"
+#include "field_map_obj_helpers.h"
+#include "field_specials.h"
+#include "map_obj_lock.h"
+#include "start_menu.h"
+#include "constants/songs.h"
+
+static void sub_807DF4C(u8 a0);
+static void sub_807DFBC(u8 taskId);
+static void task_map_chg_seq_0807E20C(u8 taskId);
+static void task_map_chg_seq_0807E2CC(u8 taskId);
+static void sub_807E31C(u8 taskId);
+static void sub_807E718(u8 taskId);
+static void sub_807E784(u8 taskId);
+static void sub_807E80C(u8 taskId);
+static void sub_807E980(u8 taskId);
+static void sub_807EB64(u16, s16*, s16*);
+static void sub_807EBBC(u8 a0, s16 *a1, s16 *a2);
+static void sub_807EAC4(s16, s16, s16*, s16*, s16*);
+static void sub_807EC34(u8 taskId);
+static void sub_807ECBC(s16 *, s16 *, s16 *, s16 *, s16 *);
+static bool8 sub_807EDA0(s16 *, s16 *, s16 *, s16 *, s16 *);
+
+void palette_bg_faded_fill_white(void)
+{
+    CpuFastFill16(RGB_WHITE, gPlttBufferFaded, 0x400);
+}
+
+void palette_bg_faded_fill_black(void)
+{
+    CpuFastFill16(RGB_BLACK, gPlttBufferFaded, 0x400);
+}
+
+void pal_fill_for_maplights(void)
+{
+    switch (sub_80C9DCC(get_map_light_from_warp0(), GetCurrentMapType()))
+    {
+    case 0:
+        palette_bg_faded_fill_black();
+        fade_screen(0, 0);
+        palette_bg_faded_fill_black();
+        break;
+    case 1:
+        palette_bg_faded_fill_white();
+        fade_screen(2, 0);
+        palette_bg_faded_fill_white();
+        break;
+    }
+}
+
+static void sub_807DBAC(void)
+{
+    switch (sub_80C9DCC(get_map_light_from_warp0(), GetCurrentMapType()))
+    {
+    case 0:
+        palette_bg_faded_fill_black();
+        fade_screen(0, 3);
+        palette_bg_faded_fill_black();
+        break;
+    case 1:
+        palette_bg_faded_fill_white();
+        fade_screen(2, 3);
+        palette_bg_faded_fill_white();
+        break;
+    }
+}
+
+void sub_807DC00(void)
+{
+    palette_bg_faded_fill_black();
+    fade_screen(0, 0);
+    palette_bg_faded_fill_black();
+}
+
+void sub_807DC18(void)
+{
+    const struct MapHeader *header = warp1_get_mapheader();
+    if (header->regionMapSectionId != gMapHeader.regionMapSectionId && sub_80F8110(header->regionMapSectionId, FALSE))
+        fade_screen(1, 0);
+    else
+    {
+        switch (sub_80C9D7C(GetCurrentMapType(), header->mapType))
+        {
+        case 0:
+            fade_screen(1, 0);
+            break;
+        case 1:
+            fade_screen(3, 0);
+            break;
+        }
+    }
+}
+
+static void sub_807DC70(void)
+{
+    switch (sub_80C9D7C(GetCurrentMapType(), warp1_get_mapheader()->mapType))
+    {
+    case 0:
+        fade_screen(1, 3);
+        break;
+    case 1:
+        fade_screen(3, 3);
+        break;
+    }
+}
+
+static void sub_807DCB0(bool8 arg)
+{
+    sub_805CB04(!arg);
+}
+
+static void task0A_nop_for_a_while(u8 taskId)
+{
+    if (sub_807E418() == TRUE)
+        DestroyTask(taskId);
+}
+
+void sub_807DCE4(void)
+{
+    ScriptContext2_Enable();
+    Overworld_PlaySpecialMapMusic();
+    sub_807DC00();
+    CreateTask(task0A_nop_for_a_while, 10);
+}
+
+static void task0A_asap_script_env_2_enable_and_set_ctx_running(u8 taskId)
+{
+    if (sub_807E418() == TRUE)
+    {
+        DestroyTask(taskId);
+        EnableBothScriptContexts();
+    }
+}
+
+void FieldCallback_ReturnToEventScript2(void)
+{
+    ScriptContext2_Enable();
+    Overworld_PlaySpecialMapMusic();
+    sub_807DC00();
+    CreateTask(task0A_asap_script_env_2_enable_and_set_ctx_running, 10);
+}
+
+void sub_807DD44(void)
+{
+    ScriptContext2_Enable();
+    sub_807DC00();
+    CreateTask(task0A_asap_script_env_2_enable_and_set_ctx_running, 10);
+}
+
+static void task_mpl_807DD60(u8 taskId)
+{
+    struct Task *task = &gTasks[taskId];
+    switch (task->data[0])
+    {
+    case 0:
+        task->data[1] = sub_8081150();
+        task->data[0]++;
+        break;
+    case 1:
+        if (gTasks[task->data[1]].isActive != TRUE)
+        {
+            pal_fill_for_maplights();
+            task->data[0]++;
+        }
+        break;
+    case 2:
+        if (sub_807E418() == TRUE)
+        {
+            ScriptContext2_Disable();
+            DestroyTask(taskId);
+        }
+        break;
+    }
+}
+
+void sub_807DDD0(void)
+{
+    ScriptContext2_Enable();
+    Overworld_PlaySpecialMapMusic();
+    palette_bg_faded_fill_black();
+    CreateTask(task_mpl_807DD60, 10);
+}
+
+static void sub_807DDF0(u8 taskId)
+{
+    struct Task *task = &gTasks[taskId];
+    switch (task->data[0])
+    {
+    case 0:
+        sub_800AB9C();
+        task->data[0]++;
+        break;
+    case 1:
+        if (IsLinkTaskFinished())
+        {
+            pal_fill_for_maplights();
+            task->data[0]++;
+        }
+        break;
+    case 2:
+        if (sub_807E418() == TRUE)
+        {
+            sub_8009FE8();
+            ScriptContext2_Disable();
+            DestroyTask(taskId);
+        }
+        break;
+    }
+}
+
+void sub_807DE58(void)
+{
+    ScriptContext2_Enable();
+    Overworld_PlaySpecialMapMusic();
+    palette_bg_faded_fill_black();
+    CreateTask(sub_807DDF0, 10);
+}
+
+static void sub_807DE78(bool8 a0)
+{
+    s16 x, y;
+    u32 behavior;
+    TaskFunc func;
+
+    PlayerGetDestCoords(&x, &y);
+    behavior = MapGridGetMetatileBehaviorAt(x, y);
+    if (MetatileBehavior_IsWarpDoor_2(behavior) == TRUE)
+    {
+        func = sub_807DFBC;
+        switch (sub_80C9DCC(get_map_light_from_warp0(), GetCurrentMapType()))
+        {
+        case 0:
+            palette_bg_faded_fill_black();
+            break;
+        case 1:
+            palette_bg_faded_fill_white();
+            break;
+        }
+    }
+    else
+    {
+        sub_807DF4C(a0);
+        if (MetatileBehavior_IsCaveDoor(behavior) == TRUE)
+            func = task_map_chg_seq_0807E20C;
+        else if (MetatileBehavior_IsUnknownWarp6C_to_6F(behavior) == TRUE)
+        {
+            u8 tmp = gUnknown_2031DE0;
+            func = task_map_chg_seq_0807E2CC;
+            if (!tmp)
+                func = sub_807EC34;
+        }
+        else
+            func = task_map_chg_seq_0807E2CC;
+    }
+    gUnknown_2031DE0 = FALSE;
+    CreateTask(func, 10);
+}
+
+static void sub_807DF4C(bool8 a0)
+{
+    if (!a0)
+        pal_fill_for_maplights();
+    else
+        sub_807DC00();
+}
+
+void sub_807DF64(void)
+{
+    Overworld_PlaySpecialMapMusic();
+    sub_8111CF0();
+    sub_807DE78(FALSE);
+    ScriptContext2_Enable();
+}
+
+void sub_807DF7C(void)
+{
+    Overworld_PlaySpecialMapMusic();
+    sub_8111CF0();
+    sub_807DE78(TRUE);
+    ScriptContext2_Enable();
+}
+
+static void sub_807DF94(void)
+{
+    Overworld_PlaySpecialMapMusic();
+    pal_fill_for_maplights();
+    sub_8111CF0();
+    PlaySE(SE_RU_GASHIN);
+    CreateTask(sub_807E31C, 10);
+    ScriptContext2_Enable();
+}
+
+static void sub_807DFBC(u8 taskId)
+{
+    struct Task * task = &gTasks[taskId];
+    s16 *x = &task->data[2];
+    s16 *y = &task->data[3];
+
+    if (task->data[0] == 0)
+        task->data[0] = 5;
+
+    switch (task->data[0])
+    {
+    case 0: // Never reached
+        sub_807DCB0(0);
+        player_bitmagic();
+        PlayerGetDestCoords(x, y);
+        FieldSetDoorOpened(*x, *y);
+        task->data[0] = 1;
+        break;
+    case 5:
+        sub_807DCB0(0);
+        player_bitmagic();
+        sub_807F114();
+        sub_807DBAC();
+        task->data[0] = 6;
+        break;
+    case 6:
+        task->data[15]++;
+        if (task->data[15] == 25)
+        {
+            PlayerGetDestCoords(x, y);
+            PlaySE(GetDoorSoundEffect(*x, *y));
+            FieldAnimateDoorOpen(*x, *y);
+            task->data[0] = 7;
+        }
+        break;
+    case 7:
+        if (!FieldIsDoorAnimationRunning())
+        {
+            PlayerGetDestCoords(&task->data[12], &task->data[13]);
+            sub_807DCB0(TRUE);
+            FieldObjectSetHeldMovement(&gMapObjects[GetFieldObjectIdByLocalIdAndMap(0xFF, 0, 0)], 16);
+            task->data[0] = 8;
+        }
+        break;
+    case 8:
+        task->data[14]++;
+        if (task->data[14] == 14)
+        {
+            FieldAnimateDoorClose(task->data[12], task->data[13]);
+            task->data[0] = 9;
+        }
+        break;
+    case 9:
+        if (sub_807E418() && walkrun_is_standing_still() && !FieldIsDoorAnimationRunning() && !FuncIsActiveTask(sub_807F204))
+        {
+            FieldObjectClearHeldMovementIfFinished(&gMapObjects[GetFieldObjectIdByLocalIdAndMap(0xFF, 0, 0)]);
+            task->data[0] = 4;
+        }
+        break;
+    // Legacy RS
+    case 1:
+        if (sub_807E418())
+        {
+            sub_807DCB0(TRUE);
+            FieldObjectSetHeldMovement(&gMapObjects[GetFieldObjectIdByLocalIdAndMap(0xFF, 0, 0)], 16);
+            task->data[0] = 2;
+        }
+        break;
+    case 2:
+        if (walkrun_is_standing_still())
+        {
+            task->data[1] = FieldAnimateDoorClose(*x, *y);
+            FieldObjectClearHeldMovementIfFinished(&gMapObjects[GetFieldObjectIdByLocalIdAndMap(0xFF, 0, 0)]);
+            task->data[0] = 3;
+        }
+        break;
+    case 3:
+        if (task->data[1] < 0 || gTasks[task->data[1]].isActive != TRUE)
+            task->data[0] = 4;
+        break;
+    case 4:
+        UnfreezeMapObjects();
+        ScriptContext2_Disable();
+        DestroyTask(taskId);
+        break;
+    }
+}
+
+static void task_map_chg_seq_0807E20C(u8 taskId)
+{
+    struct Task * task = &gTasks[taskId];
+    s16 *x = &task->data[2];
+    s16 *y = &task->data[3];
+
+    switch (task->data[0])
+    {
+    case 0:
+        sub_807DCB0(0);
+        player_bitmagic();
+        PlayerGetDestCoords(x, y);
+        task->data[0] = 1;
+        break;
+    case 1:
+        if (sub_807E418())
+        {
+            sub_807DCB0(TRUE);
+            FieldObjectSetHeldMovement(&gMapObjects[GetFieldObjectIdByLocalIdAndMap(0xFF, 0, 0)], sub_8063F84(GetPlayerFacingDirection()));
+            task->data[0] = 2;
+        }
+        break;
+    case 2:
+        if (walkrun_is_standing_still())
+        {
+            task->data[0] = 3;
+        }
+        break;
+    case 3:
+        UnfreezeMapObjects();
+        ScriptContext2_Disable();
+        DestroyTask(taskId);
+        break;
+    }
+}
+
+static void task_map_chg_seq_0807E2CC(u8 taskId)
+{
+    switch (gTasks[taskId].data[0])
+    {
+    case 0:
+        player_bitmagic();
+        ScriptContext2_Enable();
+        gTasks[taskId].data[0]++;
+        break;
+    case 1:
+        if (sub_807E418())
+        {
+            UnfreezeMapObjects();
+            ScriptContext2_Disable();
+            DestroyTask(taskId);
+        }
+        break;
+    }
+}
+
+static void sub_807E31C(u8 taskId)
+{
+    switch (gTasks[taskId].data[0])
+    {
+    case 0:
+        player_bitmagic();
+        ScriptContext2_Enable();
+        sub_805DC04();
+        gTasks[taskId].data[0]++;
+        break;
+    case 1:
+        if (sub_807E418() && sub_805DC24() != TRUE)
+        {
+            UnfreezeMapObjects();
+            ScriptContext2_Disable();
+            DestroyTask(taskId);
+        }
+        break;
+    }
+}
+
+static void sub_807E378(u8 taskId)
+{
+    if (sub_807E418() == TRUE)
+    {
+        DestroyTask(taskId);
+        CreateTask(sub_806F1F0, 80);
+    }
+}
+
+void sub_807E3A0(void)
+{
+    sub_807DC00();
+    CreateTask(sub_807E378, 80);
+    ScriptContext2_Enable();
+}
+
+bool32 sub_807E3BC(void)
+{
+    sub_806F1D4();
+    return FALSE;
+}
+
+static void task_mpl_807E3C8(u8 taskId)
+{
+    if (sub_807E418() == TRUE)
+    {
+        ScriptContext2_Disable();
+        DestroyTask(taskId);
+        sub_80696C0();
+    }
+}
+
+void sub_807E3EC(void)
+{
+    ScriptContext2_Enable();
+    Overworld_PlaySpecialMapMusic();
+    sub_807DC00();
+    CreateTask(task_mpl_807E3C8, 10);
+}
+
+static bool32 sub_807E40C(void)
+{
+    return gPaletteFade.active;
+}
+
+bool32 sub_807E418(void)
+{
+    if (sub_807AA70() == TRUE && sub_80F83B0())
+        return TRUE;
+    else
+        return FALSE;
+}
+
+void DoWarp(void)
+{
+    ScriptContext2_Enable();
+    sub_8055F88();
+    sub_807DC18();
+    PlayRainStoppingSoundEffect();
+    PlaySE(SE_KAIDAN);
+    gFieldCallback = sub_807DF64;
+    CreateTask(sub_807E718, 10);
+}
+
+void DoDiveWarp(void)
+{
+    ScriptContext2_Enable();
+    sub_8055F88();
+    sub_807DC18();
+    PlayRainStoppingSoundEffect();
+    gFieldCallback = sub_807DF64;
+    CreateTask(sub_807E718, 10);
+}
+
+void sub_807E4A0(u16 a, u16 b)
+{
+    u8 taskId = CreateTask(sub_807E980, 10);
+    gTasks[taskId].data[1] = a;
+    gTasks[taskId].data[15] = b;
+    sub_807E980(taskId);
+}
+
+void DoDoorWarp(void)
+{
+    ScriptContext2_Enable();
+    gFieldCallback = sub_807DF64;
+    CreateTask(sub_807E80C, 10);
+}
+
+void sub_807E500(void)
+{
+    ScriptContext2_Enable();
+    CreateTask(sub_807E718, 10);
+    gFieldCallback = sub_807DF94;
+}
+
+void sub_807E524(void)
+{
+    ScriptContext2_Enable();
+    gFieldCallback = sub_807DF64;
+    CreateTask(sub_807E784, 10);
+}
+
+void DoFallWarp(void)
+{
+    DoDiveWarp();
+    gFieldCallback = sub_8084454;
+}
+
+void sub_807E560(u8 a0)
+{
+    ScriptContext2_Enable();
+    sub_8084784(a0, 10);
+}
+
+void sub_807E57C(void)
+{
+    ScriptContext2_Enable();
+    sub_8084F2C(10);
+}
+
+void sub_807E58C(void)
+{
+    ScriptContext2_Enable();
+    sub_80853CC(10);
+}
+
+void sub_807E59C(void)
+{
+    ScriptContext2_Enable();
+    sub_8055F88();
+    CreateTask(sub_807E784, 10);
+    gFieldCallback = sub_807DF94;
+}
+
+void sub_807E5C4(void)
+{
+    ScriptContext2_Enable();
+    sub_807DC18();
+    CreateTask(sub_807E718, 10);
+    gFieldCallback = nullsub_60;
+}
+
+static void sub_807E5EC(u8 taskId)
+{
+    struct Task * task = &gTasks[taskId];
+    switch (task->data[0])
+    {
+    case 0:
+        ScriptContext2_Enable();
+        task->data[0]++;
+        break;
+    case 1:
+        if (!sub_807E40C() && sub_8055FC4())
+            task->data[0]++;
+        break;
+    case 2:
+        WarpIntoMap();
+        SetMainCallback2(sub_8056788);
+        DestroyTask(taskId);
+        break;
+    }
+}
+
+void sub_807E654(void)
+{
+    ScriptContext2_Enable();
+    sub_8055F88();
+    sub_807DC18();
+    PlaySE(SE_KAIDAN);
+    CreateTask(sub_807E5EC, 10);
+}
+
+static void sub_807E678(u8 taskId)
+{
+    s16 * data = gTasks[taskId].data;
+    switch (data[0])
+    {
+    case 0:
+        sub_800A068();
+        fade_screen(1, 0);
+        sub_8055F88();
+        PlaySE(SE_KAIDAN);
+        data[0]++;
+        break;
+    case 1:
+        if (!sub_807E40C() && sub_8055FC4())
+        {
+            sub_800AAC0();
+            data[0]++;
+        }
+        break;
+    case 2:
+        if (gReceivedRemoteLinkPlayers == 0)
+        {
+            WarpIntoMap();
+            SetMainCallback2(CB2_LoadMap);
+            DestroyTask(taskId);
+        }
+        break;
+    }
+}
+
+void sub_807E704(void)
+{
+    CreateTask(sub_807E678, 10);
+}
+
+static void sub_807E718(u8 taskId)
+{
+    struct Task *task = &gTasks[taskId];
+    switch (task->data[0])
+    {
+    case 0:
+        player_bitmagic();
+        ScriptContext2_Enable();
+        task->data[0]++;
+        break;
+    case 1:
+        if (!sub_807E40C() && sub_8055FC4())
+            task->data[0]++;
+        break;
+    case 2:
+        WarpIntoMap();
+        SetMainCallback2(CB2_LoadMap);
+        DestroyTask(taskId);
+        break;
+    }
+}
+
+static void sub_807E784(u8 taskId)
+{
+    struct Task *task = &gTasks[taskId];
+    switch (task->data[0])
+    {
+    case 0:
+        player_bitmagic();
+        ScriptContext2_Enable();
+        PlaySE(SE_FU_ZUZUZU);
+        sub_805DAB0();
+        task->data[0]++;
+        break;
+    case 1:
+        if (!sub_805DAD0())
+        {
+            sub_807DC18();
+            task->data[0]++;
+        }
+        break;
+    case 2:
+        if (!sub_807E40C() && sub_8055FC4())
+            task->data[0]++;
+        break;
+    case 3:
+        WarpIntoMap();
+        SetMainCallback2(CB2_LoadMap);
+        DestroyTask(taskId);
+        break;
+    }
+}
+
+static void sub_807E80C(u8 taskId)
+{
+    struct Task *task = &gTasks[taskId];
+    s16 * xp = &task->data[2];
+    s16 * yp = &task->data[3];
+    switch (task->data[0])
+    {
+    case 0:
+        player_bitmagic();
+        PlayerGetDestCoords(xp, yp);
+        PlaySE(GetDoorSoundEffect(*xp, *yp - 1));
+        task->data[1] = FieldAnimateDoorOpen(*xp, *yp - 1);
+        task->data[0] = 1;
+        break;
+    case 1:
+        if (task->data[1] < 0 || gTasks[task->data[1]].isActive != TRUE)
+        {
+            FieldObjectClearAnimIfSpecialAnimActive(&gMapObjects[GetFieldObjectIdByLocalIdAndMap(0xFF, 0, 0)]);
+            FieldObjectSetHeldMovement(&gMapObjects[GetFieldObjectIdByLocalIdAndMap(0xFF, 0, 0)], 17);
+            task->data[0] = 2;
+        }
+        break;
+    case 2:
+        if (walkrun_is_standing_still())
+        {
+            task->data[1] = FieldAnimateDoorClose(*xp, *yp - 1);
+            FieldObjectClearHeldMovementIfFinished(&gMapObjects[GetFieldObjectIdByLocalIdAndMap(0xFF, 0, 0)]);
+            sub_807DCB0(FALSE);
+            task->data[0] = 3;
+        }
+        break;
+    case 3:
+        if (task->data[1] < 0 || gTasks[task->data[1]].isActive != TRUE)
+        {
+            task->data[0] = 4;
+        }
+        break;
+    case 4:
+        sub_8055F88();
+        sub_807DC18();
+        PlayRainStoppingSoundEffect();
+        task->data[0] = 0;
+        task->func = sub_807E718;
+        break;
+    case 5:
+        sub_8055F88();
+        PlayRainStoppingSoundEffect();
+        task->data[0] = 0;
+        task->func = sub_807E718;
+        break;
+    }
+}
+
+static void sub_807E980(u8 taskId)
+{
+    s16 * data = gTasks[taskId].data;
+    struct MapObject *playerObj = &gMapObjects[gPlayerAvatar.mapObjectId];
+    struct Sprite *playerSpr = &gSprites[gPlayerAvatar.spriteId];
+    switch (data[0])
+    {
+    case 0:
+        ScriptContext2_Enable();
+        player_bitmagic();
+        CameraObjectReset2();
+        data[0]++;
+        break;
+    case 1:
+        if (!FieldObjectIsMovementOverridden(playerObj) || FieldObjectClearHeldMovementIfFinished(playerObj))
+        {
+            if (data[15] != 0)
+                data[15]--;
+            else
+            {
+                sub_8055F88();
+                PlayRainStoppingSoundEffect();
+                playerSpr->oam.priority = 1;
+                sub_807EB64(data[1], &data[2], &data[3]);
+                PlaySE(SE_KAIDAN);
+                data[0]++;
+            }
+        }
+        break;
+    case 2:
+        sub_807EAC4(data[2], data[3], &data[4], &data[5], &data[6]);
+        data[15]++;
+        if (data[15] >= 12)
+        {
+            sub_807DC18();
+            data[0]++;
+        }
+        break;
+    case 3:
+        sub_807EAC4(data[2], data[3], &data[4], &data[5], &data[6]);
+        if (!sub_807E40C() && sub_8055FC4())
+            data[0]++;
+        break;
+    default:
+        gFieldCallback = sub_807DF64;
+        WarpIntoMap();
+        SetMainCallback2(CB2_LoadMap);
+        DestroyTask(taskId);
+        break;
+    }
+}
+
+static void sub_807EAC4(s16 a0, s16 a1, s16 *a2, s16 *a3, s16 *a4)
+{
+    struct Sprite *playerSpr = &gSprites[gPlayerAvatar.spriteId];
+    struct MapObject *playerObj = &gMapObjects[gPlayerAvatar.mapObjectId];
+    if (a1 > 0 || *a4 > 6)
+        *a3 += a1;
+    *a2 += a0;
+    (*a4)++;
+    playerSpr->pos2.x = *a2 >> 5;
+    playerSpr->pos2.y = *a3 >> 5;
+    if (playerObj->mapobj_bit_7)
+    {
+        FieldObjectForceSetSpecialAnim(playerObj, GetStepInPlaceDelay16AnimId(GetPlayerFacingDirection()));
+    }
+}
+
+static void sub_807EB64(u16 a0, s16 *a1, s16 *a2)
+{
+    FieldObjectForceSetSpecialAnim(&gMapObjects[gPlayerAvatar.mapObjectId], GetStepInPlaceDelay16AnimId(GetPlayerFacingDirection()));
+    sub_807EBBC(a0, a1, a2);
+}
+
+static void sub_807EBBC(u8 a0, s16 *a1, s16 *a2)
+{
+    if (MetatileBehavior_IsUnknownWarp6C(a0))
+    {
+        *a1 = 16;
+        *a2 = -10;
+    }
+    else if (MetatileBehavior_IsUnknownWarp6D(a0))
+    {
+        *a1 = -17;
+        *a2 = -10;
+    }
+    else if (MetatileBehavior_IsUnknownWarp6E(a0))
+    {
+        *a1 = 17;
+        *a2 = 3;
+    }
+    else if (MetatileBehavior_IsUnknownWarp6F(a0))
+    {
+        *a1 = -17;
+        *a2 = 3;
+    }
+    else
+    {
+        *a1 = 0;
+        *a2 = 0;
+    }
+}
+
+static void sub_807EC34(u8 taskId)
+{
+    s16 * data = gTasks[taskId].data;
+    switch (data[0])
+    {
+    default:
+        if (sub_807E418() == TRUE)
+        {
+            CameraObjectReset1();
+            ScriptContext2_Disable();
+            DestroyTask(taskId);
+        }
+        break;
+    case 0:
+        Overworld_PlaySpecialMapMusic();
+        pal_fill_for_maplights();
+        ScriptContext2_Enable();
+        sub_807ECBC(&data[1], &data[2], &data[3], &data[4], &data[5]);
+        data[0]++;
+        break;
+    case 1:
+        if (!sub_807EDA0(&data[1], &data[2], &data[3], &data[4], &data[5]))
+            data[0]++;
+        break;
+    }
+}
+
+static void sub_807ECBC(s16 *a0, s16 *a1, s16 *a2, s16 *a3, s16 *a4)
+{
+    s16 x, y;
+    u8 behavior;
+    s32 r1;
+    struct Sprite *sprite;
+    PlayerGetDestCoords(&x, &y);
+    behavior = MapGridGetMetatileBehaviorAt(x, y);
+    if (MetatileBehavior_IsUnknownWarp6E(behavior) || MetatileBehavior_IsUnknownWarp6C(behavior))
+        r1 = 3;
+    else
+        r1 = 4;
+    FieldObjectForceSetSpecialAnim(&gMapObjects[gPlayerAvatar.mapObjectId], sub_8064270(r1));
+    sub_807EBBC(behavior, a0, a1);
+    *a2 = *a0 * 16;
+    *a3 = *a1 * 16;
+    *a4 = 16;
+    sprite = &gSprites[gPlayerAvatar.spriteId];
+    sprite->pos2.x = *a2 >> 5;
+    sprite->pos2.y = *a3 >> 5;
+    *a0 *= -1;
+    *a1 *= -1;
+}
+
+static bool8 sub_807EDA0(s16 *a0, s16 *a1, s16 *a2, s16 *a3, s16 *a4)
+{
+    struct Sprite *sprite;
+    sprite = &gSprites[gPlayerAvatar.spriteId];
+    if (*a4 != 0)
+    {
+        *a2 += *a0;
+        *a3 += *a1;
+        sprite->pos2.x = *a2 >> 5;
+        sprite->pos2.y = *a3 >> 5;
+        (*a4)--;
+        return TRUE;
+    }
+    else
+    {
+        sprite->pos2.x = 0;
+        sprite->pos2.y = 0;
+        return FALSE;
+    }
+}
diff --git a/src/map_preview_screen.c b/src/map_preview_screen.c
index a17f37802..7d9fa935e 100644
--- a/src/map_preview_screen.c
+++ b/src/map_preview_screen.c
@@ -461,7 +461,7 @@ u16 sub_80F8318(u8 mapsec)
     return windowId;
 }
 
-bool8 sub_80F83B0(void)
+bool32 sub_80F83B0(void)
 {
     if (FuncIsActiveTask(sub_80F83D0) == TRUE)
     {