Document battle_anim_mons, 1

18 files changed, 97 insertions, 95 deletions

diff --git a/include/battle.h b/include/battle.h
index 0d0f1635b..424cade00 100644
--- a/include/battle.h
+++ b/include/battle.h
@@ -671,8 +671,8 @@ extern u8 gActionSelectionCursor[MAX_BATTLERS_COUNT];
 extern void (*gPreBattleCallback1)(void);
 extern bool8 gDoingBattleAnim;
 extern struct PokedudeBattlerState *gPokedudeBattlerStates[MAX_BATTLERS_COUNT];
-extern u8 *gUnknown_2022BB8;
-extern u8 *gUnknown_2022BBC;
+extern u8 *gBattleAnimMons_BgTilesBuffer;
+extern u8 *gBattleAnimMons_BgTilemapBuffer;
 extern void (*gBattleMainFunc)(void);
 extern u8 gMoveSelectionCursor[MAX_BATTLERS_COUNT];
 extern u32 gUnknown_2022B54;
diff --git a/include/battle_anim.h b/include/battle_anim.h
index 456f6db78..cf5f07af1 100644
--- a/include/battle_anim.h
+++ b/include/battle_anim.h
@@ -158,7 +158,7 @@ void SetAnimBgAttribute(u8 bgId, u8 attributeId, u8 value);
 s32 GetAnimBgAttribute(u8 bgId, u8 attributeId);
 void HandleIntroSlide(u8 terrain);
 void sub_80BC41C(u8 taskId);
-void sub_80BCEF4(s32 bgId, u8 arg1, u8 arg2, u8 battlerPosition, u8 arg4, u8 *arg5, u16 *arg6, u16 tilesOffset);
+void CopyBattlerSpriteToBg(s32 bgId, u8 x, u8 y, u8 battlerPosition, u8 palno, u8 *tilesDest, u16 *tilemapDest, u16 tilesOffset);
 
 // battle_anim_effects_1.c
 extern const union AnimCmd *const gMusicNotesAnimTable[];
@@ -392,14 +392,14 @@ u8 GetBattlerAtPosition(u8 position);
 bool8 IsBattlerSpritePresent(u8 battlerId);
 bool8 IsDoubleBattle(void);
 void GetBattleAnimBg1Data(struct BattleAnimBgData *animBgData);
-void sub_80752C8(struct BattleAnimBgData *animBgData, u32 arg1);
-void sub_8075300(struct BattleAnimBgData *animBgData, u8 unused);
-void sub_8075358(u32 bgId);
+void GetBattleAnimBgData(struct BattleAnimBgData *animBgData, u32 bgId);
+void GetBattleAnimBgDataByPriorityRank(struct BattleAnimBgData *animBgData, u8 unused);
+void InitBattleAnimBg(u32 bgId);
 void AnimLoadCompressedBgGfx(u32 bgId, const u32 *src, u32 tilesOffset);
 void InitAnimBgTilemapBuffer(u32 bgId, const void *src);
 void AnimLoadCompressedBgTilemap(u32 bgId, const u32 *src);
 u8 GetBattleBgPaletteNum(void);
-void sub_8075458(bool8 arg0);
+void ToggleBg3Mode(bool8 arg0);
 void StartSpriteLinearTranslationFromCurrentPos(struct Sprite *sprite);
 void InitSpriteDataForLinearTranslation(struct Sprite *sprite);
 void InitAnimLinearTranslation(struct Sprite *sprite);
@@ -407,8 +407,8 @@ void StartAnimLinearTranslation(struct Sprite *sprite);
 void PlayerThrowBall_StartAnimLinearTranslation(struct Sprite *sprite);
 bool8 AnimTranslateLinear(struct Sprite *sprite);
 void RunLinearTranslation_ThenceSetCBtoStoredInData6(struct Sprite *sprite);
-void sub_8075678(struct Sprite *sprite);
-void sub_80756A4(struct Sprite *sprite);
+void BattleAnim_InitLinearTranslationWithDuration(struct Sprite *sprite);
+void BattleAnim_InitAndRunLinearTranslationWithDuration(struct Sprite *sprite);
 void InitAndRunAnimFastLinearTranslation(struct Sprite *sprite);
 bool8 AnimFastTranslateLinear(struct Sprite *sprite);
 void InitAnimFastLinearTranslationWithSpeed(struct Sprite *sprite);
diff --git a/src/battle_anim.c b/src/battle_anim.c
index f9b620025..0b011b0f3 100644
--- a/src/battle_anim.c
+++ b/src/battle_anim.c
@@ -2278,13 +2278,14 @@ void MoveBattlerSpriteToBG(u8 battlerId, bool8 toBG_2)
         LoadPalette(&gPlttBufferUnfaded[0x100 + battlerId * 16], animBg.paletteId * 16, 0x20);
         CpuCopy32(&gPlttBufferUnfaded[0x100 + battlerId * 16], (void*)(BG_PLTT + animBg.paletteId * 32), 0x20);
 
-        sub_80BCEF4(1, 0, 0, GetBattlerPosition(battlerId), animBg.paletteId, animBg.bgTiles, animBg.bgTilemap, animBg.tilesOffset);
+        CopyBattlerSpriteToBg(1, 0, 0, GetBattlerPosition(battlerId), animBg.paletteId, animBg.bgTiles,
+                              animBg.bgTilemap, animBg.tilesOffset);
     }
     else
     {
         RequestDma3Fill(0, (void*)(BG_SCREEN_ADDR(12)), 0x2000, DMA3_32BIT);
         RequestDma3Fill(0, (void*)(BG_SCREEN_ADDR(30)), 0x1000, DMA3_32BIT);
-        sub_80752C8(&animBg, 2);
+        GetBattleAnimBgData(&animBg, 2);
         CpuFill16(0, animBg.bgTiles + 0x1000, 0x1000);
         CpuFill16(0, animBg.bgTilemap + 0x400, 0x800);
         SetAnimBgAttribute(2, BG_ANIM_PRIORITY, 2);
@@ -2302,7 +2303,8 @@ void MoveBattlerSpriteToBG(u8 battlerId, bool8 toBG_2)
         LoadPalette(&gPlttBufferUnfaded[0x100 + battlerId * 16], 0x90, 0x20);
         CpuCopy32(&gPlttBufferUnfaded[0x100 + battlerId * 16], (void*)(BG_PLTT + 0x120), 0x20);
 
-        sub_80BCEF4(2, 0, 0, GetBattlerPosition(battlerId), animBg.paletteId, animBg.bgTiles + 0x1000, animBg.bgTilemap + 0x400, animBg.tilesOffset);
+        CopyBattlerSpriteToBg(2, 0, 0, GetBattlerPosition(battlerId), animBg.paletteId, animBg.bgTiles + 0x1000,
+                              animBg.bgTilemap + 0x400, animBg.tilesOffset);
     }
 }
 
@@ -2333,13 +2335,13 @@ void ResetBattleAnimBg(bool8 to_BG2)
 
     if (!to_BG2)
     {
-        sub_8075358(1);
+        InitBattleAnimBg(1);
         gBattle_BG1_X = 0;
         gBattle_BG1_Y = 0;
     }
     else
     {
-        sub_8075358(2);
+        InitBattleAnimBg(2);
         gBattle_BG2_X = 0;
         gBattle_BG2_Y = 0;
     }
diff --git a/src/battle_anim_effects_2.c b/src/battle_anim_effects_2.c
index 3dacfe9ba..dcffedb0e 100644
--- a/src/battle_anim_effects_2.c
+++ b/src/battle_anim_effects_2.c
@@ -1738,7 +1738,7 @@ void AnimCoinThrow(struct Sprite *sprite)
     sprite->data[0] = gBattleAnimArgs[4];
     sprite->data[2] = r6;
     sprite->data[4] = r7;
-    sprite->callback = sub_80756A4;
+    sprite->callback = BattleAnim_InitAndRunLinearTranslationWithDuration;
     StoreSpriteCallbackInData6(sprite, DestroyAnimSprite);
 }
 
@@ -3283,7 +3283,7 @@ static void HeartsBackground_Step(u8 taskId)
         break;
     case 3:
         GetBattleAnimBg1Data(&animBg);
-        sub_8075358(animBg.bgId);
+        InitBattleAnimBg(animBg.bgId);
         gTasks[taskId].data[12]++;
         break;
     case 4:
@@ -3371,8 +3371,8 @@ static void ScaryFace_Step(u8 taskId)
         break;
     case 3:
         GetBattleAnimBg1Data(&animBg);
-        sub_8075358(1);
-        sub_8075358(2);
+        InitBattleAnimBg(1);
+        InitBattleAnimBg(2);
         gTasks[taskId].data[12]++;
         // fall through
     case 4:
diff --git a/src/battle_anim_effects_3.c b/src/battle_anim_effects_3.c
index b08783528..4778cb55e 100644
--- a/src/battle_anim_effects_3.c
+++ b/src/battle_anim_effects_3.c
@@ -2216,7 +2216,7 @@ void AnimTask_TransformMon(u8 taskId)
         break;
     case 2:
         HandleSpeciesGfxDataChange(gBattleAnimAttacker, gBattleAnimTarget, gTasks[taskId].data[10]);
-        sub_8075300(&animBg, gBattleAnimAttacker);
+        GetBattleAnimBgDataByPriorityRank(&animBg, gBattleAnimAttacker);
         if (IsContest())
             position = 0;
         else
@@ -2349,7 +2349,7 @@ void AnimTask_MorningSunLightBeam(u8 taskId)
         break;
     case 4:
         GetBattleAnimBg1Data(&animBg);
-        sub_8075358(animBg.bgId);
+        InitBattleAnimBg(animBg.bgId);
         if (!IsContest())
             SetAnimBgAttribute(1, BG_ANIM_CHAR_BASE_BLOCK, 0);
 
@@ -2541,7 +2541,7 @@ void AnimTask_DoomDesireLightBeam(u8 taskId)
         break;
     case 5:
         GetBattleAnimBg1Data(&animBg);
-        sub_8075358(animBg.bgId);
+        InitBattleAnimBg(animBg.bgId);
         if (!IsContest())
             SetAnimBgAttribute(1, BG_ANIM_CHAR_BASE_BLOCK, 0);
 
diff --git a/src/battle_anim_mons.c b/src/battle_anim_mons.c
index 25888a9d0..46f62a03c 100644
--- a/src/battle_anim_mons.c
+++ b/src/battle_anim_mons.c
@@ -20,8 +20,8 @@
 
 static u8 GetBattlerSpriteFinal_Y(u8 battlerId, u16 species, bool8 a3);
 static void PlayerThrowBall_RunLinearTranslation_ThenceSetCBtoStoredInData6(struct Sprite *sprite);
-static void sub_80757E8(struct Sprite *sprite);
-static bool8 sub_80758DC(void);
+static void SpriteCB_RunAnimFastLinearTranslation(struct Sprite *sprite);
+static bool8 Dummy_ReturnFalse(void);
 static void AnimThrowProjectile_Step(struct Sprite *sprite);
 static void sub_80760D0(u8 taskId);
 static void AnimTask_BlendMonInAndOutSetup(struct Task *task);
@@ -803,24 +803,24 @@ bool8 IsDoubleBattle(void)
 
 void GetBattleAnimBg1Data(struct BattleAnimBgData *animBgData)
 {
-    animBgData->bgTiles = gUnknown_2022BB8;
-    animBgData->bgTilemap = (u16 *)gUnknown_2022BBC;
+    animBgData->bgTiles = gBattleAnimMons_BgTilesBuffer;
+    animBgData->bgTilemap = (u16 *)gBattleAnimMons_BgTilemapBuffer;
     animBgData->paletteId = 8;
     animBgData->bgId = 1;
     animBgData->tilesOffset = 0x200;
     animBgData->unused = 0;
 }
 
-void sub_80752C8(struct BattleAnimBgData *animBgData, u32 arg1)
+void GetBattleAnimBgData(struct BattleAnimBgData *animBgData, u32 bgId)
 {
-    if (arg1 == 1)
+    if (bgId == 1)
     {
         GetBattleAnimBg1Data(animBgData);
     }
     else
     {
-        animBgData->bgTiles = gUnknown_2022BB8;
-        animBgData->bgTilemap = (u16 *)gUnknown_2022BBC;
+        animBgData->bgTiles = gBattleAnimMons_BgTilesBuffer;
+        animBgData->bgTilemap = (u16 *)gBattleAnimMons_BgTilemapBuffer;
         animBgData->paletteId = 9;
         animBgData->bgId = 2;
         animBgData->tilesOffset = 0x300;
@@ -828,10 +828,10 @@ void sub_80752C8(struct BattleAnimBgData *animBgData, u32 arg1)
     }
 }
 
-void sub_8075300(struct BattleAnimBgData *animBgData, u8 unused)
+void GetBattleAnimBgDataByPriorityRank(struct BattleAnimBgData *animBgData, u8 unused)
 {
-    animBgData->bgTiles = gUnknown_2022BB8;
-    animBgData->bgTilemap = (u16 *)gUnknown_2022BBC;
+    animBgData->bgTiles = gBattleAnimMons_BgTilesBuffer;
+    animBgData->bgTilemap = (u16 *)gBattleAnimMons_BgTilemapBuffer;
     if (GetBattlerSpriteBGPriorityRank(gBattleAnimAttacker) == 1)
     {
         animBgData->paletteId = 8;
@@ -848,11 +848,11 @@ void sub_8075300(struct BattleAnimBgData *animBgData, u8 unused)
     }
 }
 
-void sub_8075358(u32 bgId)
+void InitBattleAnimBg(u32 bgId)
 {
     struct BattleAnimBgData animBgData;
 
-    sub_80752C8(&animBgData, bgId);
+    GetBattleAnimBgData(&animBgData, bgId);
     CpuFill32(0, animBgData.bgTiles, 0x2000);
     LoadBgTiles(bgId, animBgData.bgTiles, 0x2000, animBgData.tilesOffset);
     FillBgTilemapBufferRect(bgId, 0, 0, 0, 32, 64, 17);
@@ -861,9 +861,9 @@ void sub_8075358(u32 bgId)
 
 void AnimLoadCompressedBgGfx(u32 bgId, const u32 *src, u32 tilesOffset)
 {
-    CpuFill32(0, gUnknown_2022BB8, 0x2000);
-    LZDecompressWram(src, gUnknown_2022BB8);
-    LoadBgTiles(bgId, gUnknown_2022BB8, 0x2000, tilesOffset);
+    CpuFill32(0, gBattleAnimMons_BgTilesBuffer, 0x2000);
+    LZDecompressWram(src, gBattleAnimMons_BgTilesBuffer);
+    LoadBgTiles(bgId, gBattleAnimMons_BgTilesBuffer, 0x2000, tilesOffset);
 }
 
 void InitAnimBgTilemapBuffer(u32 bgId, const void *src)
@@ -883,7 +883,7 @@ u8 GetBattleBgPaletteNum(void)
     return 2;
 }
 
-void sub_8075458(bool8 arg0)
+void ToggleBg3Mode(bool8 arg0)
 {
     if (!arg0)
     {
@@ -1003,7 +1003,7 @@ static void PlayerThrowBall_RunLinearTranslation_ThenceSetCBtoStoredInData6(stru
         SetCallbackToStoredInData6(sprite);
 }
 
-void sub_8075678(struct Sprite *sprite)
+void BattleAnim_InitLinearTranslationWithDuration(struct Sprite *sprite)
 {
     s32 v1 = abs(sprite->sTransl_DestX - sprite->sTransl_InitX) << 8;
 
@@ -1011,11 +1011,11 @@ void sub_8075678(struct Sprite *sprite)
     InitAnimLinearTranslation(sprite);
 }
 
-void sub_80756A4(struct Sprite *sprite)
+void BattleAnim_InitAndRunLinearTranslationWithDuration(struct Sprite *sprite)
 {
     sprite->sTransl_InitX = sprite->pos1.x;
     sprite->sTransl_InitY = sprite->pos1.y;
-    sub_8075678(sprite);
+    BattleAnim_InitLinearTranslationWithDuration(sprite);
     sprite->callback = RunLinearTranslation_ThenceSetCBtoStoredInData6;
     sprite->callback(sprite);
 }
@@ -1050,7 +1050,7 @@ void InitAndRunAnimFastLinearTranslation(struct Sprite *sprite)
     sprite->sTransl_InitX = sprite->pos1.x;
     sprite->sTransl_InitY = sprite->pos1.y;
     InitAnimFastLinearTranslation(sprite);
-    sprite->callback = sub_80757E8;
+    sprite->callback = SpriteCB_RunAnimFastLinearTranslation;
     sprite->callback(sprite);
 }
 
@@ -1080,7 +1080,7 @@ bool8 AnimFastTranslateLinear(struct Sprite *sprite)
     return FALSE;
 }
 
-static void sub_80757E8(struct Sprite *sprite)
+static void SpriteCB_RunAnimFastLinearTranslation(struct Sprite *sprite)
 {
     if (AnimFastTranslateLinear(sprite))
         SetCallbackToStoredInData6(sprite);
@@ -1099,7 +1099,7 @@ void sub_8075830(struct Sprite *sprite)
     sprite->data[1] = sprite->pos1.x;
     sprite->data[3] = sprite->pos1.y;
     InitAnimFastLinearTranslationWithSpeed(sprite);
-    sprite->callback = sub_80757E8;
+    sprite->callback = SpriteCB_RunAnimFastLinearTranslation;
     sprite->callback(sprite);
 }
 
@@ -1112,7 +1112,7 @@ void SetSpriteRotScale(u8 spriteId, s16 xScale, s16 yScale, u16 rotation)
     src.xScale = xScale;
     src.yScale = yScale;
     src.rotation = rotation;
-    if (sub_80758DC())
+    if (Dummy_ReturnFalse())
         src.xScale = -src.xScale;
     i = gSprites[spriteId].oam.matrixNum;
     ObjAffineSet(&src, &matrix, 1, 2);
@@ -1122,7 +1122,7 @@ void SetSpriteRotScale(u8 spriteId, s16 xScale, s16 yScale, u16 rotation)
     gOamMatrices[i].d = matrix.d;
 }
 
-static bool8 sub_80758DC(void)
+static bool8 Dummy_ReturnFalse(void)
 {
     return FALSE;
 }
@@ -1177,7 +1177,7 @@ void TrySetSpriteRotScale(struct Sprite *sprite, bool8 recalcCenterVector, s16 x
         src.xScale = xScale;
         src.yScale = yScale;
         src.rotation = rotation;
-        if (sub_80758DC())
+        if (Dummy_ReturnFalse())
             src.xScale = -src.xScale;
         i = sprite->oam.matrixNum;
         ObjAffineSet(&src, &matrix, 1, 2);
diff --git a/src/battle_anim_utility_funcs.c b/src/battle_anim_utility_funcs.c
index 117924b47..ae2a4a407 100644
--- a/src/battle_anim_utility_funcs.c
+++ b/src/battle_anim_utility_funcs.c
@@ -33,9 +33,9 @@ static void sub_80BC19C(u8 taskId);
 
 static EWRAM_DATA struct AnimStatsChangeData *sAnimStatsChangeData = NULL;
 
-static const u16 gUnknown_83E7CC8[] = { RGB(31, 31, 31) };
-const u8 gUnknown_83E7CCA[] = { REG_OFFSET_BG0CNT, REG_OFFSET_BG1CNT, REG_OFFSET_BG2CNT, REG_OFFSET_BG3CNT };
-const u8 gUnknown_83E7CCE[] = { REG_OFFSET_BG0CNT, REG_OFFSET_BG1CNT, REG_OFFSET_BG2CNT, REG_OFFSET_BG3CNT };
+static const u16 sRgbWhite[] = { RGB(31, 31, 31) };
+const u8 gBattleAnimRegOffsBgCnt[] = { REG_OFFSET_BG0CNT, REG_OFFSET_BG1CNT, REG_OFFSET_BG2CNT, REG_OFFSET_BG3CNT };
+const u8 gBattleIntroRegOffsBgCnt[] = { REG_OFFSET_BG0CNT, REG_OFFSET_BG1CNT, REG_OFFSET_BG2CNT, REG_OFFSET_BG3CNT };
 
 // gBattleAnimArgs[0] is a bitfield.
 // Bits 0-10 result in the following palettes being selected:
@@ -336,7 +336,7 @@ void AnimTask_SetUpCurseBackground(u8 taskId)
     if (IsContest())
         sub_80730C0(animBgData.paletteId, animBgData.bgTilemap, 0, 0);
     AnimLoadCompressedBgGfx(animBgData.bgId, gFile_graphics_battle_anims_masks_curse_sheet, animBgData.tilesOffset);
-    LoadPalette(gUnknown_83E7CC8, animBgData.paletteId * 16 + 1, 2);
+    LoadPalette(sRgbWhite, animBgData.paletteId * 16 + 1, 2);
     gBattle_BG1_X = -gSprites[spriteId].pos1.x + 32;
     gBattle_BG1_Y = -gSprites[spriteId].pos1.y + 32;
     gTasks[taskId].data[0] = newSpriteId;
@@ -378,7 +378,7 @@ static void sub_80BAF38(u8 taskId)
             sprite = &gSprites[gTasks[taskId].data[0]];
             DestroySprite(sprite);
             GetBattleAnimBg1Data(&animBgData);
-            sub_8075358(animBgData.bgId);
+            InitBattleAnimBg(animBgData.bgId);
             if (gTasks[taskId].data[6] == 1)
                 ++gSprites[gBattlerSpriteIds[BATTLE_PARTNER(gBattleAnimAttacker)]].oam.priority;
             gBattle_BG1_Y = 0;
@@ -663,7 +663,7 @@ void AnimTask_StartSlidingBg(u8 taskId)
 {
     u8 newTaskId;
 
-    sub_8075458(0);
+    ToggleBg3Mode(0);
     newTaskId = CreateTask(sub_80BB8A4, 5);
     if (gBattleAnimArgs[2] && GetBattlerSide(gBattleAnimAttacker) != B_SIDE_PLAYER)
     {
@@ -689,7 +689,7 @@ static void sub_80BB8A4(u8 taskId)
     {
         gBattle_BG3_X = 0;
         gBattle_BG3_Y = 0;
-        sub_8075458(1);
+        ToggleBg3Mode(1);
         DestroyTask(taskId);
     }
 }
diff --git a/src/battle_intro.c b/src/battle_intro.c
index 996b8d3a6..9b1391fab 100644
--- a/src/battle_intro.c
+++ b/src/battle_intro.c
@@ -9,8 +9,8 @@
 
 static EWRAM_DATA u16 sBgCnt = 0;
 
-extern const u8 gUnknown_83E7CCA[];
-extern const u8 gUnknown_83E7CCE[];
+extern const u8 gBattleAnimRegOffsBgCnt[];
+extern const u8 gBattleIntroRegOffsBgCnt[];
 
 static void BattleIntroSlide1(u8 taskId);
 static void BattleIntroSlide2(u8 taskId);
@@ -35,7 +35,7 @@ void SetAnimBgAttribute(u8 bgId, u8 attributeId, u8 value)
 {
     if (bgId < 4)
     {
-        sBgCnt = GetGpuReg(gUnknown_83E7CCA[bgId]);
+        sBgCnt = GetGpuReg(gBattleAnimRegOffsBgCnt[bgId]);
         switch (attributeId)
         {
         case BG_ANIM_SCREEN_SIZE:
@@ -60,7 +60,7 @@ void SetAnimBgAttribute(u8 bgId, u8 attributeId, u8 value)
             ((struct BgCnt *)&sBgCnt)->screenBaseBlock = value;
             break;
         }
-        SetGpuReg(gUnknown_83E7CCA[bgId], sBgCnt);
+        SetGpuReg(gBattleAnimRegOffsBgCnt[bgId], sBgCnt);
     }
 }
 
@@ -70,7 +70,7 @@ s32 GetAnimBgAttribute(u8 bgId, u8 attributeId)
 
     if (bgId < 4)
     {
-        bgCnt = GetGpuReg(gUnknown_83E7CCE[bgId]);
+        bgCnt = GetGpuReg(gBattleIntroRegOffsBgCnt[bgId]);
         switch (attributeId)
         {
         case BG_ANIM_SCREEN_SIZE:
@@ -465,18 +465,18 @@ static void BattleIntroSlideLink(u8 taskId)
     }
 }
 
-void sub_80BCEF4(s32 bgId, u8 arg1, u8 arg2, u8 battlerPosition, u8 arg4, u8 *arg5, u16 *arg6, u16 tilesOffset)
+void CopyBattlerSpriteToBg(s32 bgId, u8 x, u8 y, u8 battlerPosition, u8 palno, u8 *tilesDest, u16 *tilemapDest, u16 tilesOffset)
 {
     s32 i, j;
     u8 battler = GetBattlerAtPosition(battlerPosition);
     s32 offset = tilesOffset;
 
-    CpuCopy16(gMonSpritesGfxPtr->sprites[battlerPosition] + BG_SCREEN_SIZE * gBattleMonForms[battler], arg5, BG_SCREEN_SIZE);
-    LoadBgTiles(bgId, arg5, 0x1000, tilesOffset);
-    for (i = arg2; i < arg2 + 8; ++i)
-        for (j = arg1; j < arg1 + 8; ++j)
-            arg6[i * 32 + j] = offset++ | (arg4 << 12);
-    LoadBgTilemap(bgId, arg6, BG_SCREEN_SIZE, 0);
+    CpuCopy16(gMonSpritesGfxPtr->sprites[battlerPosition] + BG_SCREEN_SIZE * gBattleMonForms[battler], tilesDest, BG_SCREEN_SIZE);
+    LoadBgTiles(bgId, tilesDest, 0x1000, tilesOffset);
+    for (i = y; i < y + 8; ++i)
+        for (j = x; j < x + 8; ++j)
+            tilemapDest[i * 32 + j] = offset++ | (palno << 12);
+    LoadBgTilemap(bgId, tilemapDest, BG_SCREEN_SIZE, 0);
 }
 
 // not used
diff --git a/src/battle_main.c b/src/battle_main.c
index 500c55012..14e44cb45 100644
--- a/src/battle_main.c
+++ b/src/battle_main.c
@@ -130,8 +130,8 @@ EWRAM_DATA u32 gBattleTypeFlags = 0;
 EWRAM_DATA u8 gBattleTerrain = 0;
 EWRAM_DATA u32 gUnknown_2022B54 = 0;
 EWRAM_DATA struct MultiBattlePokemonTx gMultiPartnerParty[3] = {0};
-EWRAM_DATA u8 *gUnknown_2022BB8 = NULL;
-EWRAM_DATA u8 *gUnknown_2022BBC = NULL;
+EWRAM_DATA u8 *gBattleAnimMons_BgTilesBuffer = NULL;
+EWRAM_DATA u8 *gBattleAnimMons_BgTilemapBuffer = NULL;
 EWRAM_DATA u16 *sUnknownDebugSpriteDataBuffer = NULL;
 EWRAM_DATA u8 gBattleBufferA[MAX_BATTLERS_COUNT][0x200] = {0};
 EWRAM_DATA u8 gBattleBufferB[MAX_BATTLERS_COUNT][0x200] = {0};
diff --git a/src/battle_util2.c b/src/battle_util2.c
index 7b3a36d4e..b1036ef0b 100644
--- a/src/battle_util2.c
+++ b/src/battle_util2.c
@@ -29,10 +29,10 @@ void AllocateBattleResources(void)
     gBattleResources->AI_ScriptsStack = AllocZeroed(sizeof(*gBattleResources->AI_ScriptsStack));
     gLinkBattleSendBuffer = AllocZeroed(BATTLE_BUFFER_LINK_SIZE);
     gLinkBattleRecvBuffer = AllocZeroed(BATTLE_BUFFER_LINK_SIZE);
-    gUnknown_2022BB8 = AllocZeroed(0x2000);
-    gUnknown_2022BBC = AllocZeroed(0x1000);
-    SetBgTilemapBuffer(1, gUnknown_2022BBC);
-    SetBgTilemapBuffer(2, gUnknown_2022BBC);
+    gBattleAnimMons_BgTilesBuffer = AllocZeroed(0x2000);
+    gBattleAnimMons_BgTilemapBuffer = AllocZeroed(0x1000);
+    SetBgTilemapBuffer(1, gBattleAnimMons_BgTilemapBuffer);
+    SetBgTilemapBuffer(2, gBattleAnimMons_BgTilemapBuffer);
 }
 
 void FreeBattleResources(void)
@@ -62,8 +62,8 @@ void FreeBattleResources(void)
         FREE_AND_SET_NULL(gBattleResources);
         FREE_AND_SET_NULL(gLinkBattleSendBuffer);
         FREE_AND_SET_NULL(gLinkBattleRecvBuffer);
-        FREE_AND_SET_NULL(gUnknown_2022BB8);
-        FREE_AND_SET_NULL(gUnknown_2022BBC);
+        FREE_AND_SET_NULL(gBattleAnimMons_BgTilesBuffer);
+        FREE_AND_SET_NULL(gBattleAnimMons_BgTilemapBuffer);
     }
 }
 
diff --git a/src/bug.c b/src/bug.c
index 6e6b8f400..896fbcbf6 100644
--- a/src/bug.c
+++ b/src/bug.c
@@ -264,7 +264,7 @@ static void AnimTranslateWebThread(struct Sprite *sprite)
     {
         SetAverageBattlerPositions(gBattleAnimTarget, 1, &sprite->data[2], &sprite->data[4]);
     }
-    sub_8075678(sprite);
+    BattleAnim_InitLinearTranslationWithDuration(sprite);
     sprite->data[5] = gBattleAnimArgs[3];
     sprite->callback = sub_80B41C0;
 }
diff --git a/src/dark.c b/src/dark.c
index d9c2900ba..142366fea 100644
--- a/src/dark.c
+++ b/src/dark.c
@@ -840,7 +840,7 @@ static void sub_80B8920(u8 taskId)
                 SetGreyscaleOrOriginalPalette(paletteNum, 1);
             DestroySprite(&gSprites[gTasks[taskId].data[0]]);
             GetBattleAnimBg1Data(&animBg);
-            sub_8075358(animBg.bgId);
+            InitBattleAnimBg(animBg.bgId);
             if (gTasks[taskId].data[6] == 1)
                 gSprites[gBattlerSpriteIds[BATTLE_PARTNER(gBattleAnimAttacker)]].oam.priority++;
         }
diff --git a/src/fighting.c b/src/fighting.c
index 9bbb09d87..a7dd18ce8 100644
--- a/src/fighting.c
+++ b/src/fighting.c
@@ -940,7 +940,7 @@ void AnimTask_MoveSkyUppercutBg(u8 taskId)
     switch (task->data[0])
     {
     case 0:
-        sub_8075458(0);
+        ToggleBg3Mode(0);
         task->data[8] = gBattleAnimArgs[0];
         ++task->data[0];
         break;
@@ -965,7 +965,7 @@ void AnimTask_MoveSkyUppercutBg(u8 taskId)
     {
         gBattle_BG3_X = 0;
         gBattle_BG3_Y = 0;
-        sub_8075458(1);
+        ToggleBg3Mode(1);
         DestroyAnimVisualTask(taskId);
     }
 }
diff --git a/src/fire.c b/src/fire.c
index 54b7948f3..3a3e6be9b 100644
--- a/src/fire.c
+++ b/src/fire.c
@@ -1016,7 +1016,7 @@ static void AnimWillOWispOrb(struct Sprite *sprite)
             sprite->data[2] = GetBattlerSpriteCoord(gBattleAnimTarget, 2);
             sprite->data[3] = sprite->pos1.y;
             sprite->data[4] = GetBattlerSpriteCoord(gBattleAnimTarget, 3);
-            sub_8075678(sprite);
+            BattleAnim_InitLinearTranslationWithDuration(sprite);
             sprite->callback = sub_80AD690;
         }
         break;
diff --git a/src/ghost.c b/src/ghost.c
index e7b715bbc..0efcc28d4 100644
--- a/src/ghost.c
+++ b/src/ghost.c
@@ -226,7 +226,7 @@ static void AnimConfuseRayBallBounce(struct Sprite *sprite)
     sprite->data[2] = GetBattlerSpriteCoord(gBattleAnimTarget, 2);
     sprite->data[3] = sprite->pos1.y;
     sprite->data[4] = GetBattlerSpriteCoord(gBattleAnimTarget, 3);
-    sub_8075678(sprite);
+    BattleAnim_InitLinearTranslationWithDuration(sprite);
     sprite->callback = sub_80B52D0;
     sprite->data[6] = 16;
     SetGpuReg(REG_OFFSET_BLDCNT, (BLDCNT_EFFECT_BLEND | BLDCNT_TGT2_ALL));
@@ -1314,12 +1314,12 @@ static void sub_80B6BE4(u8 taskId)
         gBattle_BG2_Y = 0;
         SetGpuReg(REG_OFFSET_BG2HOFS, gBattle_BG2_X);
         SetGpuReg(REG_OFFSET_BG2VOFS, gBattle_BG2_Y);
-        sub_80752C8(&animBgData, 2);
+        GetBattleAnimBgData(&animBgData, 2);
         AnimLoadCompressedBgGfx(animBgData.bgId, gBattleAnim_ScaryFaceGfx, animBgData.tilesOffset);
         LoadCompressedPalette(gBattleAnim_ScaryFacePal, 16 * animBgData.paletteId, 0x20);
         break;
     case 3:
-        sub_80752C8(&animBgData, 2);
+        GetBattleAnimBgData(&animBgData, 2);
         gMonSpritesGfxPtr->multiUseBuffer = AllocZeroed(0x2000);
         LZDecompressWram(gBattleAnimBgTilemap_ScaryFacePlayer, gMonSpritesGfxPtr->multiUseBuffer);
         sub_80730C0(animBgData.paletteId, gMonSpritesGfxPtr->multiUseBuffer, 256, 0);
@@ -1417,7 +1417,7 @@ static void sub_80B6FC4(u8 taskId)
         SetAnimBgAttribute(2, BG_ANIM_PRIORITY, 2);
         break;
     case 3:
-        sub_8075358(2);
+        InitBattleAnimBg(2);
         FillPalette(0, 0x90, 0x20);
         SetAnimBgAttribute(2, BG_ANIM_CHAR_BASE_BLOCK, 0);
         task->data[1] = 12;
diff --git a/src/ice.c b/src/ice.c
index eb8420c63..ed0c93430 100644
--- a/src/ice.c
+++ b/src/ice.c
@@ -993,8 +993,8 @@ static void AnimTask_Haze2(u8 taskId)
         break;
     case 3:
         GetBattleAnimBg1Data(&animBg);
-        sub_8075358(1);
-        sub_8075358(2);
+        InitBattleAnimBg(1);
+        InitBattleAnimBg(2);
         ++gTasks[taskId].data[12];
         // fall through
     case 4:
@@ -1088,8 +1088,8 @@ static void AnimTask_OverlayFogTiles(u8 taskId)
         break;
     case 3:
         GetBattleAnimBg1Data(&animBg);
-        sub_8075358(1);
-        sub_8075358(2);
+        InitBattleAnimBg(1);
+        InitBattleAnimBg(2);
         ++gTasks[taskId].data[12];
         // fall through
     case 4:
@@ -1230,7 +1230,7 @@ static void MovePoisonGasCloud(struct Sprite *sprite)
                 sprite->data[2] = -0x10;
             ++sprite->data[7];
             sprite->pos2.x = sprite->pos2.y = 0;
-            sub_8075678(sprite);
+            BattleAnim_InitLinearTranslationWithDuration(sprite);
         }
         break;
     case 2:
diff --git a/src/rock.c b/src/rock.c
index 4243e5102..c5b78fe31 100644
--- a/src/rock.c
+++ b/src/rock.c
@@ -465,7 +465,7 @@ static void sub_80B490C(u8 taskId)
         break;
     case 3:
         GetBattleAnimBg1Data(&animBg);
-        sub_8075358(animBg.bgId);
+        InitBattleAnimBg(animBg.bgId);
         ++gTasks[taskId].data[12];
         break;
     case 4:
@@ -795,14 +795,14 @@ void AnimTask_MoveSeismicTossBg(u8 taskId)
 {
     if (gTasks[taskId].data[0] == 0)
     {
-        sub_8075458(0);
+        ToggleBg3Mode(0);
         gTasks[taskId].data[1] = 200;
     }
     gBattle_BG3_Y += gTasks[taskId].data[1] / 10;
     gTasks[taskId].data[1] -= 3;
     if (gTasks[taskId].data[0] == 120)
     {
-        sub_8075458(1);
+        ToggleBg3Mode(1);
         DestroyAnimVisualTask(taskId);
     }
     ++gTasks[taskId].data[0];
@@ -812,7 +812,7 @@ void AnimTask_SeismicTossBgAccelerateDownAtEnd(u8 taskId)
 {
     if (gTasks[taskId].data[0] == 0)
     {
-        sub_8075458(0);
+        ToggleBg3Mode(0);
         ++gTasks[taskId].data[0];
         gTasks[taskId].data[2] = gBattle_BG3_Y;
     }
@@ -822,7 +822,7 @@ void AnimTask_SeismicTossBgAccelerateDownAtEnd(u8 taskId)
     if (gBattleAnimArgs[7] == 0xFFF)
     {
         gBattle_BG3_Y = 0;
-        sub_8075458(1);
+        ToggleBg3Mode(1);
         DestroyAnimVisualTask(taskId);
     }
 }
diff --git a/src/water.c b/src/water.c
index 9fbfd4d9a..8a1737e58 100644
--- a/src/water.c
+++ b/src/water.c
@@ -928,8 +928,8 @@ static void AnimTask_CreateSurfWave_Step2(u8 taskId)
     u16 *BGptrY = &gBattle_BG1_Y;
     if (gTasks[taskId].data[0] == 0)
     {
-        sub_8075358(1);
-        sub_8075358(2);
+        InitBattleAnimBg(1);
+        InitBattleAnimBg(2);
         gTasks[taskId].data[0]++;
     }
     else