start working on battle anim

3 files changed, 652 insertions, 2 deletions

diff --git a/src/battle_anim.c b/src/battle_anim.c
new file mode 100644
index 000000000..6c316157f
--- /dev/null
+++ b/src/battle_anim.c
@@ -0,0 +1,650 @@
+#include "global.h"
+#include "battle.h"
+#include "battle_anim.h"
+#include "sprite.h"
+#include "contest.h"
+#include "m4a.h"
+#include "pokemon.h"
+#include "battle_interface.h"
+#include "task.h"
+#include "decompress.h"
+#include "sound.h"
+#include "dma3.h"
+#include "bg.h"
+#include "gpu_regs.h"
+#include "palette.h"
+
+// sprites start at 10000 and thus must be subtracted of 10000 to account for the true index.
+#define GET_TRUE_SPRITE_INDEX(i) ((i - 10000))
+#define SCRIPT_READ_32(ptr) ((ptr)[0] | (ptr)[1] << 8 | (ptr)[2] << 16 | (ptr)[3] << 24)
+#define SCRIPT_READ_32_(ptr) (((ptr)[0]) + ((ptr)[1] << 8) + ((ptr)[2] << 16) + ((ptr)[3] << 24))
+#define SCRIPT_READ_16(ptr) ((ptr)[0] | ((ptr)[1] << 8))
+#define SCRIPT_READ_16_(ptr) ((ptr)[0] + ((ptr)[1] << 8))
+
+#define ANIM_SPRITE_INDEX_COUNT 8
+#define ANIM_ARGS_COUNT 8
+
+extern u8 gBankAttacker;
+extern u8 gBankTarget;
+extern u16 gBattle_WIN0H;
+extern u16 gBattle_WIN0V;
+extern u16 gBattle_WIN1H;
+extern u16 gBattle_WIN1V;
+extern u16 gBattle_BG1_X;
+extern u16 gBattle_BG1_Y;
+extern u16 gBattle_BG2_X;
+extern u16 gBattle_BG2_Y;
+extern u16 gBattlePartyID[BATTLE_BANKS_COUNT];
+extern u8 gBankSpriteIds[BATTLE_BANKS_COUNT];
+extern struct MusicPlayerInfo gMPlay_BGM;
+extern struct MusicPlayerInfo gMPlay_SE1;
+extern struct MusicPlayerInfo gMPlay_SE2;
+
+EWRAM_DATA const u8 *gBattleAnimScriptPtr = NULL;
+EWRAM_DATA const u8 *gBattleAnimScriptRetAddr = NULL;
+EWRAM_DATA void (*gAnimScriptCallback)(void) = NULL;
+EWRAM_DATA s8 gAnimFramesToWait = 0;
+EWRAM_DATA bool8 gAnimScriptActive = FALSE;
+EWRAM_DATA u8 gAnimVisualTaskCount = 0;
+EWRAM_DATA u8 gAnimSoundTaskCount = 0;
+EWRAM_DATA struct DisableStruct *gAnimDisableStructPtr = NULL;
+EWRAM_DATA u32 gAnimMoveDmg = 0;
+EWRAM_DATA u16 gAnimMovePower = 0;
+EWRAM_DATA u16 gAnimSpriteIndexArray[ANIM_SPRITE_INDEX_COUNT] = {0};
+EWRAM_DATA u8 gAnimFriendship = 0;
+EWRAM_DATA u16 gWeatherMoveAnim = 0;
+EWRAM_DATA s16 gBattleAnimArgs[ANIM_ARGS_COUNT] = {0};
+EWRAM_DATA u16 gSoundAnimFramesToWait = 0;
+EWRAM_DATA u8 gMonAnimTaskIdArray[2] = {0};
+EWRAM_DATA u8 gUnknown_02038432 = 0;
+EWRAM_DATA u8 gUnknown_02038433 = 0;
+EWRAM_DATA u16 gAnimMoveIndex = 0; // set but unused.
+EWRAM_DATA u8 gAnimBankAttacker = 0;
+EWRAM_DATA u8 gAnimBankTarget = 0;
+EWRAM_DATA u16 gAnimSpeciesByBanks[BATTLE_BANKS_COUNT] = {0};
+EWRAM_DATA u8 gUnknown_02038440 = 0;
+
+extern void (* const sScriptCmdTable[])(void);
+extern const u16 gUnknown_082C8D64[];
+extern const u8 * const gBattleAnims_Moves[];
+extern const struct CompressedSpriteSheet gBattleAnimPicTable[];
+extern const struct CompressedSpritePalette gBattleAnimPaletteTable[];
+
+extern void sub_80A8278(void); // rom_80A5C6C.s
+extern void sub_80A6B30(struct UnknownAnimStruct2*); // rom_80A5C6C.s
+extern void sub_80A6B90(struct UnknownAnimStruct2*, u32 arg1); // rom_80A5C6C.s
+extern u8 sub_80A82E4(u8 bank); // rom_80A5C6C.s
+extern u8 sub_80A5C6C(u8 bank, u8 attributeId); // rom_80A5C6C.s
+extern bool8 AnimBankSpriteExists(u8 bank); // rom_80A5C6C.s
+
+// this file's functions
+void RunAnimScriptCommand(void);
+void task_pA_ma0A_obj_to_bg_pal(u8 taskId);
+void sub_80A46A0(void);
+
+void ClearBattleAnimationVars(void)
+{
+    s32 i;
+
+    gAnimFramesToWait = 0;
+    gAnimScriptActive = FALSE;
+    gAnimVisualTaskCount = 0;
+    gAnimSoundTaskCount = 0;
+    gAnimDisableStructPtr = NULL;
+    gAnimMoveDmg = 0;
+    gAnimMovePower = 0;
+    gAnimFriendship = 0;
+
+    // clear index array.
+    for (i = 0; i < ANIM_SPRITE_INDEX_COUNT; i++)
+        gAnimSpriteIndexArray[i] |= 0xFFFF;
+
+    // clear anim args.
+    for (i = 0; i < ANIM_ARGS_COUNT; i++)
+        gBattleAnimArgs[i] = 0;
+
+    gMonAnimTaskIdArray[0] = 0xFF;
+    gMonAnimTaskIdArray[1] = 0xFF;
+    gUnknown_02038432 = 0;
+    gUnknown_02038433 = 0;
+    gAnimMoveIndex = 0;
+    gAnimBankAttacker = 0;
+    gAnimBankTarget = 0;
+    gUnknown_02038440 = 0;
+}
+
+void DoMoveAnim(u16 move)
+{
+    gAnimBankAttacker = gBankAttacker;
+    gAnimBankTarget = gBankTarget;
+    DoBattleAnim(gBattleAnims_Moves, move, TRUE);
+}
+
+void DoBattleAnim(const u8 *const animsTable[], u16 tableId, bool8 isMoveAnim)
+{
+    s32 i;
+
+    if (!IsContest())
+    {
+        sub_80A8278();
+        sub_8072A88(0);
+        for (i = 0; i < BATTLE_BANKS_COUNT; i++)
+        {
+            if (GetBankSide(i) != 0)
+                gAnimSpeciesByBanks[i] = GetMonData(&gEnemyParty[gBattlePartyID[i]], MON_DATA_SPECIES);
+            else
+                gAnimSpeciesByBanks[i] = GetMonData(&gPlayerParty[gBattlePartyID[i]], MON_DATA_SPECIES);
+        }
+    }
+    else
+    {
+        for (i = 0; i < 4; i++)
+            gAnimSpeciesByBanks[i] = gContestResources->field_18->field_0;
+    }
+
+    if (!isMoveAnim)
+        gAnimMoveIndex = 0;
+    else
+        gAnimMoveIndex = tableId;
+
+    for (i = 0; i < ANIM_ARGS_COUNT; i++)
+        gBattleAnimArgs[i] = 0;
+
+    gMonAnimTaskIdArray[0] = 0xFF;
+    gMonAnimTaskIdArray[1] = 0xFF;
+    gBattleAnimScriptPtr = animsTable[tableId];
+    gAnimScriptActive = TRUE;
+    gAnimFramesToWait = 0;
+    gAnimScriptCallback = RunAnimScriptCommand;
+
+    for (i = 0; i < ANIM_SPRITE_INDEX_COUNT; i++)
+        gAnimSpriteIndexArray[i] |= 0xFFFF;
+
+    if (isMoveAnim)
+    {
+        for (i = 0; gUnknown_082C8D64[i] != 0xFFFF; i++)
+        {
+            if (tableId == gUnknown_082C8D64[i])
+            {
+                m4aMPlayVolumeControl(&gMPlay_BGM, 0xFFFF, 128);
+                break;
+            }
+        }
+    }
+
+    gBattle_WIN0H = 0;
+    gBattle_WIN0V = 0;
+    gBattle_WIN1H = 0;
+    gBattle_WIN1V = 0;
+}
+
+void DestroyAnimSprite(struct Sprite *sprite)
+{
+    FreeSpriteOamMatrix(sprite);
+    DestroySprite(sprite);
+    gAnimVisualTaskCount--;
+}
+
+void DestroyAnimVisualTask(u8 taskId)
+{
+    DestroyTask(taskId);
+    gAnimVisualTaskCount--;
+}
+
+void DestroyAnimSoundTask(u8 taskId)
+{
+    DestroyTask(taskId);
+    gAnimSoundTaskCount--;
+}
+
+/*static*/ void AddSpriteIndex(u16 index)
+{
+    s32 i;
+
+    for (i = 0; i < ANIM_SPRITE_INDEX_COUNT; i++)
+    {
+        if (gAnimSpriteIndexArray[i] == 0xFFFF)
+        {
+            gAnimSpriteIndexArray[i] = index;
+            return;
+        }
+    }
+}
+
+/*static*/ void ClearSpriteIndex(u16 index)
+{
+    s32 i;
+
+    for (i = 0; i < ANIM_SPRITE_INDEX_COUNT; i++)
+    {
+        if (gAnimSpriteIndexArray[i] == index)
+        {
+            gAnimSpriteIndexArray[i] |= 0xFFFF;
+            return;
+        }
+    }
+}
+
+/*static*/ void WaitAnimFrameCount(void)
+{
+    if (gAnimFramesToWait <= 0)
+    {
+        gAnimScriptCallback = RunAnimScriptCommand;
+        gAnimFramesToWait = 0;
+    }
+    else
+    {
+        gAnimFramesToWait--;
+    }
+}
+
+/*static*/ void RunAnimScriptCommand(void)
+{
+    do
+    {
+        sScriptCmdTable[gBattleAnimScriptPtr[0]]();
+    } while (gAnimFramesToWait == 0 && gAnimScriptActive);
+}
+
+/*static*/ void ScriptCmd_loadspritegfx(void)
+{
+    u16 index;
+
+    gBattleAnimScriptPtr++;
+    index = SCRIPT_READ_16(gBattleAnimScriptPtr);
+    LoadCompressedObjectPicUsingHeap(&gBattleAnimPicTable[GET_TRUE_SPRITE_INDEX(index)]);
+    LoadCompressedObjectPaletteUsingHeap(&gBattleAnimPaletteTable[GET_TRUE_SPRITE_INDEX(index)]);
+    gBattleAnimScriptPtr += 2;
+    AddSpriteIndex(GET_TRUE_SPRITE_INDEX(index));
+    gAnimFramesToWait = 1;
+    gAnimScriptCallback = WaitAnimFrameCount;
+}
+
+/*static*/ void ScriptCmd_unloadspritegfx(void)
+{
+    u16 index;
+
+    gBattleAnimScriptPtr++;
+    index = SCRIPT_READ_16(gBattleAnimScriptPtr);
+    FreeSpriteTilesByTag(gBattleAnimPicTable[GET_TRUE_SPRITE_INDEX(index)].tag);
+    FreeSpritePaletteByTag(gBattleAnimPicTable[GET_TRUE_SPRITE_INDEX(index)].tag);
+    gBattleAnimScriptPtr += 2;
+    ClearSpriteIndex(GET_TRUE_SPRITE_INDEX(index));
+}
+
+/*static*/ void ScriptCmd_createsprite(void)
+{
+    s32 i;
+    const struct SpriteTemplate *template;
+    u8 argVar;
+    u8 argsCount;
+    s16 subpriority;
+
+    gBattleAnimScriptPtr++;
+    template = (const struct SpriteTemplate *)(SCRIPT_READ_32_(gBattleAnimScriptPtr));
+    gBattleAnimScriptPtr += 4;
+
+    argVar = gBattleAnimScriptPtr[0];
+    gBattleAnimScriptPtr++;
+
+    argsCount = gBattleAnimScriptPtr[0];
+    gBattleAnimScriptPtr++;
+    for (i = 0; i < argsCount; i++)
+    {
+        gBattleAnimArgs[i] = SCRIPT_READ_16(gBattleAnimScriptPtr);
+        gBattleAnimScriptPtr += 2;
+    }
+
+    if (argVar & 0x80)
+    {
+        argVar ^= 0x80;
+        if (argVar >= 0x40)
+            argVar -= 0x40;
+        else
+            argVar *= -1;
+
+        subpriority = sub_80A82E4(gAnimBankTarget) + (s8)(argVar);
+    }
+    else
+    {
+        if (argVar >= 0x40)
+            argVar -= 0x40;
+        else
+            argVar *= -1;
+
+        subpriority = sub_80A82E4(gAnimBankAttacker) + (s8)(argVar);
+    }
+
+    if (subpriority < 3)
+        subpriority = 3;
+
+    CreateSpriteAndAnimate(template, sub_80A5C6C(gAnimBankTarget, 2), sub_80A5C6C(gAnimBankTarget, 3), subpriority);
+    gAnimVisualTaskCount++;
+}
+
+/*static*/ void ScriptCmd_createvisualtask(void)
+{
+    TaskFunc taskFunc;
+    u8 taskPriority;
+    u8 taskId;
+    u8 numArgs;
+    s32 i;
+
+    gBattleAnimScriptPtr++;
+
+    taskFunc = (TaskFunc)SCRIPT_READ_32_(gBattleAnimScriptPtr);
+    gBattleAnimScriptPtr += 4;
+
+    taskPriority = gBattleAnimScriptPtr[0];
+    gBattleAnimScriptPtr++;
+
+    numArgs = gBattleAnimScriptPtr[0];
+    gBattleAnimScriptPtr++;
+
+    for (i = 0; i < numArgs; i++)
+    {
+        gBattleAnimArgs[i] = SCRIPT_READ_16(gBattleAnimScriptPtr);
+        gBattleAnimScriptPtr += 2;
+    }
+
+    taskId = CreateTask(taskFunc, taskPriority);
+    taskFunc(taskId);
+    gAnimVisualTaskCount++;
+}
+
+/*static*/ void ScriptCmd_delay(void)
+{
+    gBattleAnimScriptPtr++;
+    gAnimFramesToWait = gBattleAnimScriptPtr[0];
+    if (gAnimFramesToWait == 0)
+        gAnimFramesToWait = -1;
+    gBattleAnimScriptPtr++;
+    gAnimScriptCallback = WaitAnimFrameCount;
+}
+
+// wait for visual tasks to finish.
+/*static*/ void ScriptCmd_waitforvisualfinish(void)
+{
+    if (gAnimVisualTaskCount == 0)
+    {
+        gBattleAnimScriptPtr++;
+        gAnimFramesToWait = 0;
+    }
+    else
+    {
+        gAnimFramesToWait = 1;
+    }
+}
+
+/*static*/ void ScriptCmd_hang1(void)
+{
+}
+
+/*static*/ void ScriptCmd_hang2(void)
+{
+}
+
+/*static*/ void ScriptCmd_end(void)
+{
+    s32 i;
+    bool32 continuousAnim = FALSE;
+
+    // keep waiting as long as there is animations to be done.
+    if (gAnimVisualTaskCount != 0 || gAnimSoundTaskCount != 0
+     || gMonAnimTaskIdArray[0] != 0xFF || gMonAnimTaskIdArray[1] != 0xFF)
+    {
+        gSoundAnimFramesToWait = 0;
+        gAnimFramesToWait = 1;
+        return;
+    }
+
+    // finish the sound effects.
+    if (IsSEPlaying())
+    {
+        if (++gSoundAnimFramesToWait <= 90) // wait 90 frames, then halt the sound effect.
+        {
+            gAnimFramesToWait = 1;
+            return;
+        }
+        else
+        {
+            m4aMPlayStop(&gMPlay_SE1);
+            m4aMPlayStop(&gMPlay_SE2);
+        }
+    }
+
+    // the SE has halted, so set the SE Frame Counter to 0 and continue.
+    gSoundAnimFramesToWait = 0;
+
+    for (i = 0; i < ANIM_SPRITE_INDEX_COUNT; i++)
+    {
+        if (gAnimSpriteIndexArray[i] != 0xFFFF)
+        {
+            FreeSpriteTilesByTag(gBattleAnimPicTable[gAnimSpriteIndexArray[i]].tag);
+            FreeSpritePaletteByTag(gBattleAnimPicTable[gAnimSpriteIndexArray[i]].tag);
+            gAnimSpriteIndexArray[i] |= 0xFFFF; // set terminator.
+        }
+    }
+
+    if (!continuousAnim) // may have been used for debug?
+    {
+        m4aMPlayVolumeControl(&gMPlay_BGM, 0xFFFF, 256);
+        if (!IsContest())
+        {
+            sub_80A8278();
+            sub_8072A88(1);
+        }
+        gAnimScriptActive = FALSE;
+    }
+}
+
+/*static*/ void ScriptCmd_playse(void)
+{
+    gBattleAnimScriptPtr++;
+    PlaySE(SCRIPT_READ_16(gBattleAnimScriptPtr));
+    gBattleAnimScriptPtr += 2;
+}
+
+#define t1_MONBG_BANK           0
+#define t1_MON_IN_BG2           1
+#define t1_CREATE_ANOTHER_TASK  2
+#define t1_IS_SECONDMON_BG      3
+
+#define t2_BANK_SPRITE_ID       0
+#define t2_MON_IN_BG2           5
+#define t2_MONBG_BANK           6
+
+/*static*/ void sub_80A40F4(u8 taskId)
+{
+    u8 newTaskId;
+
+    s16 *selfData = gTasks[taskId].data;
+    u8 bankSpriteId = gBankSpriteIds[selfData[t1_MONBG_BANK]];
+    gSprites[bankSpriteId].invisible = 1;
+
+    if (!selfData[t1_CREATE_ANOTHER_TASK])
+    {
+        DestroyAnimVisualTask(taskId);
+        return;
+    }
+
+    newTaskId = CreateTask(task_pA_ma0A_obj_to_bg_pal, 10);
+    gTasks[newTaskId].data[t2_BANK_SPRITE_ID] = bankSpriteId;
+    gTasks[newTaskId].data[1] = gSprites[bankSpriteId].pos1.x + gSprites[bankSpriteId].pos2.x;
+    gTasks[newTaskId].data[2] = gSprites[bankSpriteId].pos1.y + gSprites[bankSpriteId].pos2.y;
+
+    if (!selfData[t1_MON_IN_BG2])
+    {
+        gTasks[newTaskId].data[3] = gBattle_BG1_X;
+        gTasks[newTaskId].data[4] = gBattle_BG1_Y;
+    }
+    else
+    {
+        gTasks[newTaskId].data[3] = gBattle_BG2_X;
+        gTasks[newTaskId].data[4] = gBattle_BG2_Y;
+    }
+
+    gTasks[newTaskId].data[t2_MON_IN_BG2] = selfData[t1_MON_IN_BG2];
+    gTasks[newTaskId].data[t2_MONBG_BANK] = selfData[t1_MONBG_BANK];
+    gMonAnimTaskIdArray[selfData[t1_IS_SECONDMON_BG]] = newTaskId;
+    DestroyAnimVisualTask(taskId);
+}
+
+/*static*/ void ScriptCmd_monbg(void)
+{
+    bool8 toBG_2;
+    u8 taskId;
+    u8 bank;
+    u8 animBank;
+
+    gBattleAnimScriptPtr++;
+
+    animBank = gBattleAnimScriptPtr[0];
+    if (animBank & ANIM_BANK_TARGET)
+        bank = gAnimBankTarget;
+    else
+        bank = gAnimBankAttacker;
+
+    if (IsAnimBankSpriteVisible(bank))
+    {
+        u8 identity = GetBankIdentity(bank);
+        if (identity == IDENTITY_OPPONENT_MON1 || identity == IDENTITY_PLAYER_MON2 || IsContest())
+            toBG_2 = FALSE;
+        else
+            toBG_2 = TRUE;
+
+        sub_80A438C(bank, toBG_2, FALSE);
+        taskId = CreateTask(sub_80A40F4, 10);
+        gAnimVisualTaskCount++;
+        gTasks[taskId].data[t1_MONBG_BANK] = bank;
+        gTasks[taskId].data[t1_MON_IN_BG2] = toBG_2;
+        gTasks[taskId].data[t1_CREATE_ANOTHER_TASK] = TRUE;
+        gTasks[taskId].data[t1_IS_SECONDMON_BG] = 0;
+
+    }
+
+    bank ^= BIT_MON;
+    if (IsAnimBankSpriteVisible(bank))
+    {
+        u8 identity = GetBankIdentity(bank);
+        if (identity == IDENTITY_OPPONENT_MON1 || identity == IDENTITY_PLAYER_MON2 || IsContest())
+            toBG_2 = FALSE;
+        else
+            toBG_2 = TRUE;
+
+        sub_80A438C(bank, toBG_2, FALSE);
+        taskId = CreateTask(sub_80A40F4, 10);
+        gAnimVisualTaskCount++;
+        gTasks[taskId].data[0] = bank;
+        gTasks[taskId].data[1] = toBG_2;
+        gTasks[taskId].data[t1_CREATE_ANOTHER_TASK] = TRUE;
+        gTasks[taskId].data[t1_IS_SECONDMON_BG] = 1;
+    }
+
+    gBattleAnimScriptPtr++;
+    gAnimFramesToWait = 1;
+    gAnimScriptCallback = WaitAnimFrameCount;
+}
+
+bool8 IsAnimBankSpriteVisible(u8 bank)
+{
+    if (IsContest())
+    {
+        if (bank == gAnimBankAttacker)
+            return TRUE;
+        else
+            return FALSE;
+    }
+    if (!AnimBankSpriteExists(bank))
+        return FALSE;
+    if (IsContest())
+        return TRUE; // this line wont ever be reached.
+    if (!gBattleSpritesDataPtr->bankData[bank].invisible || !gSprites[gBankSpriteIds[bank]].invisible)
+        return TRUE;
+
+    return FALSE;
+}
+
+void sub_80A438C(u8 bank, bool8 toBG_2, bool8 setSpriteInvisible)
+{
+    struct UnknownAnimStruct2 unknownStruct;
+    u8 bankSpriteId;
+
+    if (!toBG_2)
+    {
+        u8 bankIdentity;
+
+        if (IsContest() == TRUE)
+        {
+            RequestDma3Fill(0, (void*)(VRAM + 0x8000), 0x2000, 1);
+            RequestDma3Fill(0xFF, (void*)(VRAM + 0xF000), 0x1000, 0);
+        }
+        else
+        {
+            RequestDma3Fill(0, (void*)(VRAM + 0x4000), 0x2000, 1);
+            RequestDma3Fill(0xFF, (void*)(VRAM + 0xe000), 0x1000, 0);
+        }
+
+        sub_80A6B30(&unknownStruct);
+        CpuFill16(0, unknownStruct.unk0, 0x1000);
+        CpuFill16(0xFF, unknownStruct.unk4, 0x800);
+
+        SetAnimBgAttribute(1, BG_ANIM_PRIORITY, 2);
+        SetAnimBgAttribute(1, BG_ANIM_SCREEN_SIZE, 1);
+        SetAnimBgAttribute(1, BG_ANIM_AREA_OVERFLOW_MODE, 0);
+
+        bankSpriteId = gBankSpriteIds[bank];
+
+        gBattle_BG1_X =  -(gSprites[bankSpriteId].pos1.x + gSprites[bankSpriteId].pos2.x) + 0x20;
+        if (IsContest() && IsSpeciesNotUnown(gContestResources->field_18->field_0))
+            gBattle_BG1_X--;
+
+        gBattle_BG1_Y =  -(gSprites[bankSpriteId].pos1.y + gSprites[bankSpriteId].pos2.y) + 0x20;
+        if (setSpriteInvisible)
+            gSprites[gBankSpriteIds[bank]].invisible = 1;
+
+        SetGpuReg(REG_OFFSET_BG1HOFS, gBattle_BG1_X);
+        SetGpuReg(REG_OFFSET_BG1VOFS, gBattle_BG1_Y);
+
+        LoadPalette(&gPlttBufferUnfaded[0x100 + bank * 16], unknownStruct.unk8 * 16, 0x20);
+        CpuCopy32(&gPlttBufferUnfaded[0x100 + bank * 16], (void*)(BG_PLTT + unknownStruct.unk8 * 32), 0x20);
+
+        if (IsContest())
+            bankIdentity = 0;
+        else
+            bankIdentity = GetBankIdentity(bank);
+
+        sub_8118FBC(1, 0, 0, bankIdentity, unknownStruct.unk8, unknownStruct.unk0, unknownStruct.unk4, unknownStruct.unkA);
+
+        if (IsContest())
+            sub_80A46A0();
+    }
+    else
+    {
+        RequestDma3Fill(0, (void*)(VRAM + 0x6000), 0x2000, 1);
+        RequestDma3Fill(0, (void*)(VRAM + 0xF000), 0x1000, 1);
+        sub_80A6B90(&unknownStruct, 2);
+        CpuFill16(0, unknownStruct.unk0 + 0x1000, 0x1000);
+        CpuFill16(0, unknownStruct.unk4 + 0x400, 0x800);
+        SetAnimBgAttribute(2, BG_ANIM_PRIORITY, 2);
+        SetAnimBgAttribute(2, BG_ANIM_SCREEN_SIZE, 1);
+        SetAnimBgAttribute(2, BG_ANIM_AREA_OVERFLOW_MODE, 0);
+
+        bankSpriteId = gBankSpriteIds[bank];
+
+        gBattle_BG2_X =  -(gSprites[bankSpriteId].pos1.x + gSprites[bankSpriteId].pos2.x) + 0x20;
+        gBattle_BG2_Y =  -(gSprites[bankSpriteId].pos1.y + gSprites[bankSpriteId].pos2.y) + 0x20;
+
+        if (setSpriteInvisible)
+            gSprites[gBankSpriteIds[bank]].invisible = 1;
+
+        SetGpuReg(REG_OFFSET_BG2HOFS, gBattle_BG2_X);
+        SetGpuReg(REG_OFFSET_BG2VOFS, gBattle_BG2_Y);
+
+        LoadPalette(&gPlttBufferUnfaded[0x100 + bank * 16], 0x90, 0x20);
+        CpuCopy32(&gPlttBufferUnfaded[0x100 + bank * 16], (void*)(BG_PLTT + 0x120), 0x20);
+
+        sub_8118FBC(2, 0, 0, GetBankIdentity(bank), unknownStruct.unk8, unknownStruct.unk0 + 0x1000, unknownStruct.unk4 + 0x400, unknownStruct.unkA);
+    }
+}
+
diff --git a/src/decompress.c b/src/decompress.c
index 2863ff1f5..9210799ec 100644
--- a/src/decompress.c
+++ b/src/decompress.c
@@ -465,7 +465,7 @@ u32 sub_8034974(void* ptr)
     return (ptr_[3] << 16) | (ptr_[2] << 8) | (ptr_[1]);
 }
 
-bool8 LoadCompressedObjectPicUsingHeap(struct CompressedSpriteSheet* src)
+bool8 LoadCompressedObjectPicUsingHeap(const struct CompressedSpriteSheet* src)
 {
     struct SpriteSheet dest;
     void* buffer;
diff --git a/src/sprite.c b/src/sprite.c
index 17b0f181a..daa019019 100644
--- a/src/sprite.c
+++ b/src/sprite.c
@@ -594,7 +594,7 @@ u8 CreateSpriteAt(u8 index, const struct SpriteTemplate *template, s16 x, s16 y,
     return index;
 }
 
-u8 CreateSpriteAndAnimate(struct SpriteTemplate *template, s16 x, s16 y, u8 subpriority)
+u8 CreateSpriteAndAnimate(const struct SpriteTemplate *template, s16 x, s16 y, u8 subpriority)
 {
     u8 i;