Merge pull request #96 from DizzyEggg/decompile_evo_scene_graphics

Decompile Evolution graphics/scene

5 files changed, 2122 insertions, 5 deletions

diff --git a/src/battle_2.c b/src/battle_2.c
index fd1b88b48..24b43bdbd 100644
--- a/src/battle_2.c
+++ b/src/battle_2.c
@@ -85,7 +85,7 @@ extern u16 gTrainerBattleOpponent_B;
 extern struct BattleEnigmaBerry gEnigmaBerries[BATTLE_BANKS_COUNT];
 extern void (*gPreBattleCallback1)(void);
 extern void (*gBattleMainFunc)(void);
-extern void (*gUnknown_030061E8)(void);
+extern void (*gCB2_AfterEvolution)(void);
 extern struct UnknownPokemonStruct2 gUnknown_02022FF8[3]; // what is it used for?
 extern struct UnknownPokemonStruct2* gUnknown_02023058; // what is it used for?
 extern u8 gUnknown_02039B28[]; // possibly a struct?
@@ -4938,7 +4938,7 @@ static void HandleEndTurn_FinishBattle(void)
         BeginFastPaletteFade(3);
         FadeOutMapMusic(5);
         gBattleMainFunc = FreeResetData_ReturnToOvOrDoEvolutions;
-        gUnknown_030061E8 = BattleMainCB2;
+        gCB2_AfterEvolution = BattleMainCB2;
     }
     else
     {
diff --git a/src/battle_dome_cards.c b/src/battle_dome_cards.c
index 5251ee06a..e6c67b20e 100644
--- a/src/battle_dome_cards.c
+++ b/src/battle_dome_cards.c
@@ -124,7 +124,7 @@ static void sub_818D0C4(u16 species, u32 otId, u32 personality, u8 paletteSlot,
         else
         {
             gUnknown_0203CCEC.paletteTag = paletteTag;
-            LoadCompressedObjectPalette(sub_806E7CC(species, otId, personality));
+            LoadCompressedObjectPalette(GetMonSpritePalStructFromOtIdPersonality(species, otId, personality));
         }
     }
     else
diff --git a/src/evolution_graphics.c b/src/evolution_graphics.c
new file mode 100644
index 000000000..eca5d4bdc
--- /dev/null
+++ b/src/evolution_graphics.c
@@ -0,0 +1,611 @@
+#include "global.h"
+#include "evolution_graphics.h"
+#include "sprite.h"
+#include "trig.h"
+#include "rng.h"
+#include "decompress.h"
+#include "task.h"
+#include "sound.h"
+#include "songs.h"
+#include "palette.h"
+
+// this file's functions
+static void EvoSparkle_DummySpriteCb(struct Sprite* sprite);
+static void EvoTask_BeginPreSet1_FadeAndPlaySE(u8 taskID);
+static void EvoTask_CreatePreEvoSparkleSet1(u8 taskID);
+static void EvoTask_WaitForPre1SparklesToGoUp(u8 taskID);
+static void EvoTask_BeginPreSparklesSet2(u8 taskID);
+static void EvoTask_CreatePreEvoSparklesSet2(u8 taskID);
+static void EvoTask_DestroyPreSet2Task(u8 taskID);
+static void EvoTask_BeginPostSparklesSet1(u8 taskID);
+static void EvoTask_CreatePostEvoSparklesSet1(u8 taskID);
+static void EvoTask_DestroyPostSet1Task(u8 taskID);
+static void EvoTask_BeginPostSparklesSet2_AndFlash(u8 taskID);
+static void EvoTask_CreatePostEvoSparklesSet2_AndFlash(u8 taskID);
+static void EvoTask_BeginPostSparklesSet2_AndFlash_Trade(u8 taskID);
+static void EvoTask_CreatePostEvoSparklesSet2_AndFlash_Trade(u8 taskID);
+static void EvoTask_DestroyPostSet2AndFlashTask(u8 taskID);
+static void sub_817C4EC(u8 taskID);
+static void sub_817C510(u8 taskID);
+static void PreEvoVisible_PostEvoInvisible_KillTask(u8 taskID);
+static void PreEvoInvisible_PostEvoVisible_KillTask(u8 taskID);
+static void sub_817C560(u8 taskID);
+
+static const u16 sEvoSparklePalette[] = INCBIN_U16("graphics/misc/evo_sparkle.gbapal");
+static const u8 sEvoSparkleTiles[] = INCBIN_U8("graphics/misc/evo_sparkle.4bpp.lz");
+
+static const struct CompressedSpriteSheet sEvoSparkleSpriteSheets[] =
+{
+    {sEvoSparkleTiles, 0x20, 1001},
+    {NULL, 0, 0}
+};
+
+static const struct SpritePalette sEvoSparkleSpritePals[] =
+{
+    {sEvoSparklePalette, 1001},
+    {NULL, 0}
+};
+
+static const struct OamData sOamData_EvoSparkle =
+{
+    .y = 160,
+    .affineMode = 0,
+    .objMode = 0,
+    .mosaic = 0,
+    .bpp = 0,
+    .shape = 0,
+    .x = 0,
+    .matrixNum = 0,
+    .size = 0,
+    .tileNum = 0,
+    .priority = 1,
+    .paletteNum = 0,
+    .affineParam = 0,
+};
+
+static const union AnimCmd sSpriteAnim_EvoSparkle[] =
+{
+    ANIMCMD_FRAME(0, 8),
+    ANIMCMD_END
+};
+
+static const union AnimCmd *const sSpriteAnimTable_EvoSparkle[] =
+{
+    sSpriteAnim_EvoSparkle,
+};
+
+static const struct SpriteTemplate sEvoSparkleSpriteTemplate =
+{
+    .tileTag = 1001,
+    .paletteTag = 1001,
+    .oam = &sOamData_EvoSparkle,
+    .anims = sSpriteAnimTable_EvoSparkle,
+    .images = NULL,
+    .affineAnims = gDummySpriteAffineAnimTable,
+    .callback = EvoSparkle_DummySpriteCb
+};
+
+static const s16 sEvoSparkleMatrices[] =
+{
+    0x3C0, 0x380, 0x340, 0x300, 0x2C0, 0x280, 0x240, 0x200, 0x1C0,
+    0x180, 0x140, 0x100, -4, 0x10, -3, 0x30, -2, 0x50,
+    -1, 0x70, 0x1, 0x70, 0x2, 0x50, 0x3, 0x30, 0x4, 0x10
+};
+
+static void EvoSparkle_DummySpriteCb(struct Sprite *sprite)
+{
+
+}
+
+static void SetEvoSparklesMatrices(void)
+{
+    u16 i;
+    for (i = 0; i < 12; i++)
+    {
+        SetOamMatrix(20 + i, sEvoSparkleMatrices[i], 0, 0, sEvoSparkleMatrices[i]);
+    }
+}
+
+static void SpriteCB_PreEvoSparkleSet1(struct Sprite* sprite)
+{
+    if (sprite->pos1.y > 8)
+    {
+        u8 matrixNum;
+
+        sprite->pos1.y = 88 - (sprite->data7 * sprite->data7) / 80;
+        sprite->pos2.y = Sin((u8)(sprite->data6), sprite->data5) / 4;
+        sprite->pos2.x = Cos((u8)(sprite->data6), sprite->data5);
+        sprite->data6 += 4;
+        if (sprite->data7 & 1)
+            sprite->data5--;
+        sprite->data7++;
+        if (sprite->pos2.y > 0)
+            sprite->subpriority = 1;
+        else
+            sprite->subpriority = 20;
+        matrixNum = sprite->data5 / 4 + 20;
+        if (matrixNum > 31)
+            matrixNum = 31;
+        sprite->oam.matrixNum = matrixNum;
+    }
+    else
+        DestroySprite(sprite);
+}
+
+static void CreatePreEvoSparkleSet1(u8 arg0)
+{
+    u8 spriteID = CreateSprite(&sEvoSparkleSpriteTemplate, 120, 88, 0);
+    if (spriteID != MAX_SPRITES)
+    {
+        gSprites[spriteID].data5 = 48;
+        gSprites[spriteID].data6 = arg0;
+        gSprites[spriteID].data7 = 0;
+        gSprites[spriteID].oam.affineMode = 1;
+        gSprites[spriteID].oam.matrixNum = 31;
+        gSprites[spriteID].callback = SpriteCB_PreEvoSparkleSet1;
+    }
+}
+
+static void SpriteCB_PreEvoSparkleSet2(struct Sprite* sprite)
+{
+    if (sprite->pos1.y < 88)
+    {
+        sprite->pos1.y = 8 + (sprite->data7 * sprite->data7) / 5;
+        sprite->pos2.y = Sin((u8)(sprite->data6), sprite->data5) / 4;
+        sprite->pos2.x = Cos((u8)(sprite->data6), sprite->data5);
+        sprite->data5 = 8 + Sin((u8)(sprite->data7 * 4), 40);
+        sprite->data7++;
+    }
+    else
+        DestroySprite(sprite);
+}
+
+static void CreatePreEvoSparkleSet2(u8 arg0)
+{
+    u8 spriteID = CreateSprite(&sEvoSparkleSpriteTemplate, 120, 8, 0);
+    if (spriteID != MAX_SPRITES)
+    {
+        gSprites[spriteID].data5 = 8;
+        gSprites[spriteID].data6 = arg0;
+        gSprites[spriteID].data7 = 0;
+        gSprites[spriteID].oam.affineMode = 1;
+        gSprites[spriteID].oam.matrixNum = 25;
+        gSprites[spriteID].subpriority = 1;
+        gSprites[spriteID].callback = SpriteCB_PreEvoSparkleSet2;
+    }
+}
+
+static void SpriteCB_PostEvoSparkleSet1(struct Sprite* sprite)
+{
+    if (sprite->data5 > 8)
+    {
+        sprite->pos2.y = Sin((u8)(sprite->data6), sprite->data5);
+        sprite->pos2.x = Cos((u8)(sprite->data6), sprite->data5);
+        sprite->data5 -= sprite->data3;
+        sprite->data6 += 4;
+    }
+    else
+        DestroySprite(sprite);
+}
+
+static void CreatePostEvoSparkleSet1(u8 arg0, u8 arg1)
+{
+    u8 spriteID = CreateSprite(&sEvoSparkleSpriteTemplate, 120, 56, 0);
+    if (spriteID != MAX_SPRITES)
+    {
+        gSprites[spriteID].data3 = arg1;
+        gSprites[spriteID].data5 = 120;
+        gSprites[spriteID].data6 = arg0;
+        gSprites[spriteID].data7 = 0;
+        gSprites[spriteID].oam.affineMode = 1;
+        gSprites[spriteID].oam.matrixNum = 31;
+        gSprites[spriteID].subpriority = 1;
+        gSprites[spriteID].callback = SpriteCB_PostEvoSparkleSet1;
+    }
+}
+
+static void SpriteCB_PostEvoSparkleSet2(struct Sprite* sprite)
+{
+    if (!(sprite->data7 & 3))
+        sprite->pos1.y++;
+    if (sprite->data6 < 128)
+    {
+        u8 matrixNum;
+
+        sprite->pos2.y = -Sin((u8)(sprite->data6), sprite->data5);
+        sprite->pos1.x = 120 + (sprite->data3 * sprite->data7) / 3;
+        sprite->data6++;
+        matrixNum = 31 - (sprite->data6 * 12 / 128);
+        if (sprite->data6 > 64)
+            sprite->subpriority = 1;
+        else
+        {
+            sprite->invisible = 0;
+            sprite->subpriority = 20;
+            if (sprite->data6 > 112 && sprite->data6 & 1)
+                sprite->invisible = 1;
+        }
+        if (matrixNum < 20)
+            matrixNum = 20;
+        sprite->oam.matrixNum = matrixNum;
+        sprite->data7++;
+    }
+    else
+        DestroySprite(sprite);
+}
+
+static void CreatePostEvoSparkleSet2(u8 arg0)
+{
+    u8 spriteID = CreateSprite(&sEvoSparkleSpriteTemplate, 120, 56, 0);
+    if (spriteID != MAX_SPRITES)
+    {
+        gSprites[spriteID].data3 = 3 - (Random() % 7);
+        gSprites[spriteID].data5 = 48 + (Random() & 0x3F);
+        gSprites[spriteID].data7 = 0;
+        gSprites[spriteID].oam.affineMode = 1;
+        gSprites[spriteID].oam.matrixNum = 31;
+        gSprites[spriteID].subpriority = 20;
+        gSprites[spriteID].callback = SpriteCB_PostEvoSparkleSet2;
+    }
+}
+
+void LoadEvoSparkleSpriteAndPal(void)
+{
+    LoadCompressedObjectPicUsingHeap(&sEvoSparkleSpriteSheets[0]);
+    LoadSpritePalettes(sEvoSparkleSpritePals);
+}
+
+#define tFrameCounter   data[15]
+
+u8 LaunchTask_PreEvoSparklesSet1(u16 arg0)
+{
+    u8 taskID = CreateTask(EvoTask_BeginPreSet1_FadeAndPlaySE, 0);
+    gTasks[taskID].data[1] = arg0;
+    return taskID;
+}
+
+static void EvoTask_BeginPreSet1_FadeAndPlaySE(u8 taskID)
+{
+    SetEvoSparklesMatrices();
+    gTasks[taskID].tFrameCounter = 0;
+    BeginNormalPaletteFade(3 << gTasks[taskID].data[1], 0xA, 0, 0x10, 0x7FFF);
+    gTasks[taskID].func = EvoTask_CreatePreEvoSparkleSet1;
+    PlaySE(SE_W025);
+}
+
+static void EvoTask_CreatePreEvoSparkleSet1(u8 taskID)
+{
+    if (gTasks[taskID].tFrameCounter < 64)
+    {
+        if (!(gTasks[taskID].tFrameCounter & 7))
+        {
+            u8 i;
+            for (i = 0; i < 4; i++)
+                CreatePreEvoSparkleSet1((0x78 & gTasks[taskID].tFrameCounter) * 2 + i * 64);
+        }
+        gTasks[taskID].tFrameCounter++;
+    }
+    else
+    {
+        gTasks[taskID].tFrameCounter = 96;
+        gTasks[taskID].func = EvoTask_WaitForPre1SparklesToGoUp;
+    }
+}
+
+static void EvoTask_WaitForPre1SparklesToGoUp(u8 taskID)
+{
+    if (gTasks[taskID].tFrameCounter != 0)
+        gTasks[taskID].tFrameCounter--;
+    else
+        DestroyTask(taskID);
+}
+
+u8 LaunchTask_PreEvoSparklesSet2(void)
+{
+    return CreateTask(EvoTask_BeginPreSparklesSet2, 0);
+}
+
+static void EvoTask_BeginPreSparklesSet2(u8 taskID)
+{
+    SetEvoSparklesMatrices();
+    gTasks[taskID].tFrameCounter = 0;
+    gTasks[taskID].func = EvoTask_CreatePreEvoSparklesSet2;
+    PlaySE(SE_W062B);
+}
+
+static void EvoTask_CreatePreEvoSparklesSet2(u8 taskID)
+{
+    if (gTasks[taskID].tFrameCounter < 96)
+    {
+        if (gTasks[taskID].tFrameCounter < 6)
+        {
+            u8 i;
+            for (i = 0; i < 9; i++)
+                CreatePreEvoSparkleSet2(i * 16);
+        }
+        gTasks[taskID].tFrameCounter++;
+    }
+    else
+        gTasks[taskID].func = EvoTask_DestroyPreSet2Task;
+}
+
+static void EvoTask_DestroyPreSet2Task(u8 taskID)
+{
+    DestroyTask(taskID);
+}
+
+u8 LaunchTask_PostEvoSparklesSet1(void)
+{
+    return CreateTask(EvoTask_BeginPostSparklesSet1, 0);
+}
+
+static void EvoTask_BeginPostSparklesSet1(u8 taskID)
+{
+    SetEvoSparklesMatrices();
+    gTasks[taskID].tFrameCounter = 0;
+    gTasks[taskID].func = EvoTask_CreatePostEvoSparklesSet1;
+    PlaySE(SE_REAPOKE);
+}
+
+static void EvoTask_CreatePostEvoSparklesSet1(u8 taskID)
+{
+    if (gTasks[taskID].tFrameCounter < 48)
+    {
+        if (gTasks[taskID].tFrameCounter == 0)
+        {
+            u8 i;
+            for (i = 0; i < 16; i++)
+                CreatePostEvoSparkleSet1(i * 16, 4);
+        }
+        if (gTasks[taskID].tFrameCounter == 32)
+        {
+            u8 i;
+            for (i = 0; i < 16; i++)
+                CreatePostEvoSparkleSet1(i * 16, 8);
+        }
+        gTasks[taskID].tFrameCounter++;
+    }
+    else
+        gTasks[taskID].func = EvoTask_DestroyPostSet1Task;
+}
+
+static void EvoTask_DestroyPostSet1Task(u8 taskID)
+{
+    DestroyTask(taskID);
+}
+
+u8 LaunchTask_PostEvoSparklesSet2AndFlash(u16 species)
+{
+    u8 taskID = CreateTask(EvoTask_BeginPostSparklesSet2_AndFlash, 0);
+    gTasks[taskID].data[2] = species;
+    return taskID;
+}
+
+static void EvoTask_BeginPostSparklesSet2_AndFlash(u8 taskID)
+{
+    SetEvoSparklesMatrices();
+    gTasks[taskID].tFrameCounter = 0;
+    CpuSet(&gPlttBufferFaded[0x20], &gPlttBufferUnfaded[0x20], 0x30);
+    BeginNormalPaletteFade(0xFFF9041C, 0, 0, 0x10, 0x7FFF); // was 0xFFF9001C in R/S
+    gTasks[taskID].func = EvoTask_CreatePostEvoSparklesSet2_AndFlash;
+    PlaySE(SE_W080);
+}
+
+static void EvoTask_CreatePostEvoSparklesSet2_AndFlash(u8 taskID)
+{
+    if (gTasks[taskID].tFrameCounter < 128)
+    {
+        u8 i;
+        switch (gTasks[taskID].tFrameCounter)
+        {
+        default:
+            if (gTasks[taskID].tFrameCounter < 50)
+                CreatePostEvoSparkleSet2(Random() & 7);
+            break;
+        case 0:
+            for (i = 0; i < 8; i++)
+                CreatePostEvoSparkleSet2(i);
+            break;
+        case 32:
+            BeginNormalPaletteFade(0xFFFF041C, 0x10, 0x10, 0, 0x7FFF); // was 0xFFF9001C in R/S
+            break;
+        }
+        gTasks[taskID].tFrameCounter++;
+    }
+    else
+        gTasks[taskID].func = EvoTask_DestroyPostSet2AndFlashTask;
+}
+
+static void EvoTask_DestroyPostSet2AndFlashTask(u8 taskID)
+{
+    if (!gPaletteFade.active)
+        DestroyTask(taskID);
+}
+
+u8 LaunchTask_PostEvoSparklesSet2AndFlash_Trade(u16 species)
+{
+    u8 taskID = CreateTask(EvoTask_BeginPostSparklesSet2_AndFlash_Trade, 0);
+    gTasks[taskID].data[2] = species;
+    return taskID;
+}
+
+static void EvoTask_BeginPostSparklesSet2_AndFlash_Trade(u8 taskID)
+{
+    SetEvoSparklesMatrices();
+    gTasks[taskID].tFrameCounter = 0;
+    CpuSet(&gPlttBufferFaded[0x20], &gPlttBufferUnfaded[0x20], 0x30);
+    BeginNormalPaletteFade(0xFFF90400, 0, 0, 0x10, 0x7FFF); // was 0xFFFF0001 in R/S
+    gTasks[taskID].func = EvoTask_CreatePostEvoSparklesSet2_AndFlash_Trade;
+    PlaySE(SE_W080);
+}
+
+static void EvoTask_CreatePostEvoSparklesSet2_AndFlash_Trade(u8 taskID)
+{
+    if (gTasks[taskID].tFrameCounter < 128)
+    {
+        u8 i;
+        switch (gTasks[taskID].tFrameCounter)
+        {
+        default:
+            if (gTasks[taskID].tFrameCounter < 50)
+                CreatePostEvoSparkleSet2(Random() & 7);
+            break;
+        case 0:
+            for (i = 0; i < 8; i++)
+                CreatePostEvoSparkleSet2(i);
+            break;
+        case 32:
+            BeginNormalPaletteFade(0xFFFF0400, 0x10, 0x10, 0, 0x7FFF); // was 0xFFFF0001 in R/S
+            break;
+        }
+        gTasks[taskID].tFrameCounter++;
+    }
+    else
+        gTasks[taskID].func = EvoTask_DestroyPostSet2AndFlashTask;
+}
+
+#undef tFrameCounter
+
+static void PokeEvoSprite_DummySpriteCB(struct Sprite* sprite)
+{
+
+}
+
+#define tPreEvoSpriteID     data[1]
+#define tPostEvoSpriteID    data[2]
+#define tEvoStopped         data[8]
+
+u8 sub_817C3A0(u8 preEvoSpriteID, u8 postEvoSpriteID)
+{
+    u16 i;
+    u16 stack[16];
+    u8 taskID;
+    s32 toDiv;
+
+    for (i = 0; i < 16; i++)
+        stack[i] = 0x7FFF;
+
+    taskID = CreateTask(sub_817C4EC, 0);
+    gTasks[taskID].tPreEvoSpriteID = preEvoSpriteID;
+    gTasks[taskID].tPostEvoSpriteID = postEvoSpriteID;
+    gTasks[taskID].data[3] = 256;
+    gTasks[taskID].data[4] = 16;
+
+    toDiv = 65536;
+    SetOamMatrix(30, 256, 0, 0, 256);
+    SetOamMatrix(31, toDiv / gTasks[taskID].data[4], 0, 0, toDiv / gTasks[taskID].data[4]);
+
+    gSprites[preEvoSpriteID].callback = PokeEvoSprite_DummySpriteCB;
+    gSprites[preEvoSpriteID].oam.affineMode = 1;
+    gSprites[preEvoSpriteID].oam.matrixNum = 30;
+    gSprites[preEvoSpriteID].invisible = 0;
+    CpuSet(stack, &gPlttBufferFaded[0x100 + (gSprites[preEvoSpriteID].oam.paletteNum * 16)], 16);
+
+    gSprites[postEvoSpriteID].callback = PokeEvoSprite_DummySpriteCB;
+    gSprites[postEvoSpriteID].oam.affineMode = 1;
+    gSprites[postEvoSpriteID].oam.matrixNum = 31;
+    gSprites[postEvoSpriteID].invisible = 0;
+    CpuSet(stack, &gPlttBufferFaded[0x100 + (gSprites[postEvoSpriteID].oam.paletteNum * 16)], 16);
+
+    gTasks[taskID].tEvoStopped = FALSE;
+    return taskID;
+}
+
+static void sub_817C4EC(u8 taskID)
+{
+    gTasks[taskID].data[5] = 0;
+    gTasks[taskID].data[6] = 8;
+    gTasks[taskID].func = sub_817C510;
+}
+
+static void sub_817C510(u8 taskID)
+{
+    if (gTasks[taskID].tEvoStopped)
+        PreEvoVisible_PostEvoInvisible_KillTask(taskID);
+    else if (gTasks[taskID].data[6] == 128)
+        PreEvoInvisible_PostEvoVisible_KillTask(taskID);
+    else
+    {
+        gTasks[taskID].data[6] += 2;
+        gTasks[taskID].data[5] ^= 1;
+        gTasks[taskID].func = sub_817C560;
+    }
+}
+
+static void sub_817C560(u8 taskID)
+{
+    if (gTasks[taskID].tEvoStopped)
+        gTasks[taskID].func = PreEvoVisible_PostEvoInvisible_KillTask;
+    else
+    {
+        u16 oamMatrixArg;
+        u8 r6 = 0;
+        if (gTasks[taskID].data[5] == 0)
+        {
+            if (gTasks[taskID].data[3] < 256 - gTasks[taskID].data[6])
+                gTasks[taskID].data[3] += gTasks[taskID].data[6];
+            else
+            {
+                gTasks[taskID].data[3] = 256;
+                r6++;
+            }
+            if (gTasks[taskID].data[4] > 16 + gTasks[taskID].data[6])
+                gTasks[taskID].data[4]  -= gTasks[taskID].data[6];
+            else
+            {
+                gTasks[taskID].data[4] = 16;
+                r6++;
+            }
+        }
+        else
+        {
+            if (gTasks[taskID].data[4] < 256 - gTasks[taskID].data[6])
+                gTasks[taskID].data[4] += gTasks[taskID].data[6];
+            else
+            {
+                gTasks[taskID].data[4] = 256;
+                r6++;
+            }
+            if (gTasks[taskID].data[3] > 16 + gTasks[taskID].data[6])
+                gTasks[taskID].data[3]  -= gTasks[taskID].data[6];
+            else
+            {
+                gTasks[taskID].data[3] = 16;
+                r6++;
+            }
+        }
+        oamMatrixArg = 65536 / gTasks[taskID].data[3];
+        SetOamMatrix(30, oamMatrixArg, 0, 0, oamMatrixArg);
+
+        oamMatrixArg = 65536 / gTasks[taskID].data[4];
+        SetOamMatrix(31, oamMatrixArg, 0, 0, oamMatrixArg);
+        if (r6 == 2)
+            gTasks[taskID].func = sub_817C510;
+    }
+}
+
+static void PreEvoInvisible_PostEvoVisible_KillTask(u8 taskID)
+{
+    gSprites[gTasks[taskID].tPreEvoSpriteID].oam.affineMode = 0;
+    gSprites[gTasks[taskID].tPreEvoSpriteID].oam.matrixNum = 0;
+    gSprites[gTasks[taskID].tPreEvoSpriteID].invisible = 1;
+
+    gSprites[gTasks[taskID].tPostEvoSpriteID].oam.affineMode = 0;
+    gSprites[gTasks[taskID].tPostEvoSpriteID].oam.matrixNum = 0;
+    gSprites[gTasks[taskID].tPostEvoSpriteID].invisible = 0;
+
+    DestroyTask(taskID);
+}
+
+static void PreEvoVisible_PostEvoInvisible_KillTask(u8 taskID)
+{
+    gSprites[gTasks[taskID].tPreEvoSpriteID].oam.affineMode = 0;
+    gSprites[gTasks[taskID].tPreEvoSpriteID].oam.matrixNum = 0;
+    gSprites[gTasks[taskID].tPreEvoSpriteID].invisible = 0;
+
+    gSprites[gTasks[taskID].tPostEvoSpriteID].oam.affineMode = 0;
+    gSprites[gTasks[taskID].tPostEvoSpriteID].oam.matrixNum = 0;
+    gSprites[gTasks[taskID].tPostEvoSpriteID].invisible = 1;
+
+    DestroyTask(taskID);
+}
diff --git a/src/evolution_scene.c b/src/evolution_scene.c
new file mode 100644
index 000000000..68731a14a
--- /dev/null
+++ b/src/evolution_scene.c
@@ -0,0 +1,1506 @@
+#include "global.h"
+#include "evolution_scene.h"
+#include "evolution_graphics.h"
+#include "sprite.h"
+#include "malloc.h"
+#include "task.h"
+#include "palette.h"
+#include "main.h"
+#include "text.h"
+#include "text_window.h"
+#include "pokemon.h"
+#include "string_util.h"
+#include "battle.h"
+#include "unknown_task.h"
+#include "decompress.h"
+#include "m4a.h"
+#include "menu.h"
+#include "pokedex.h"
+#include "species.h"
+#include "sound.h"
+#include "songs.h"
+#include "overworld.h"
+#include "battle_message.h"
+#include "gpu_regs.h"
+#include "bg.h"
+#include "link.h"
+#include "blend_palette.h"
+#include "trig.h"
+
+struct EvoInfo
+{
+    u8 preEvoSpriteID;
+    u8 postEvoSpriteID;
+    u8 evoTaskID;
+    u8 field_3;
+    u16 savedPalette[48];
+};
+
+static EWRAM_DATA struct EvoInfo *sEvoStructPtr = NULL;
+static EWRAM_DATA u16 *sEvoMovingBgPtr = NULL;
+
+extern u16 gBattle_BG0_X;
+extern u16 gBattle_BG0_Y;
+extern u16 gBattle_BG1_X;
+extern u16 gBattle_BG1_Y;
+extern u16 gBattle_BG2_X;
+extern u16 gBattle_BG2_Y;
+extern u16 gBattle_BG3_X;
+extern u16 gBattle_BG3_Y;
+extern u8 gBattleTerrain;
+extern struct SpriteTemplate gUnknown_0202499C;
+extern bool8 gAffineAnimsDisabled;
+extern u16 gMoveToLearn;
+
+extern u8 gBattleCommunication[];
+#define sEvoCursorPos           gBattleCommunication[1] // when learning a new move
+#define sEvoGraphicsTaskID      gBattleCommunication[2]
+
+extern const struct WindowTemplate gUnknown_0833900C;
+extern const struct CompressedSpriteSheet gMonFrontPicTable[];
+extern const u8 gUnknown_085B58C9[][4];
+extern const u16 gUnknown_085B5884[];
+extern const u8 gUnknown_085B58D9[];
+extern const u16 gUnknown_085B51E4[];
+extern const u32 gUnknown_085B4134[];
+extern const u32 gUnknown_085B482C[];
+extern const u32 gUnknown_085B4D10[];
+
+// strings
+extern const u8 gText_ShedinjaJapaneseName2[];
+extern const u8 gText_PkmnIsEvolving[];
+extern const u8 gText_CongratsPkmnEvolved[];
+extern const u8 gText_BattleYesNoChoice[];
+extern const u8 gText_PkmnStoppedEvolving[];
+extern const u8 gText_EllipsisQuestionMark[];
+extern const u8 gText_CommunicationStandby5[];
+
+extern void copy_decompressed_tile_data_to_vram_autofree(u8 arg0, const void *arg1, bool32 arg2, u16 arg3, u8 arg4);
+extern u32 sub_80391E0(u8, u8);
+extern void SpriteCallbackDummy_2(struct Sprite *sprite);
+extern void sub_80356D0(void);
+extern void sub_807B154(void);
+extern void sub_806A068(u16, u8);
+extern void sub_807F19C(void);
+extern void sub_807B140(void);
+extern void EvolutionRenameMon(struct Pokemon *mon, u16 oldSpecies, u16 newSpecies);
+extern void sub_8085784(void);
+extern void sub_81BFA38(struct Pokemon *party, u8 monId, u8 partyCount, void *CB2_ptr, u16 move);
+extern u8 sub_81C1B94(void);
+extern void sub_807F1A8(u8 arg0, const u8 *arg1, u8 arg2);
+extern void sub_800E084(void);
+
+// this file's functions
+static void Task_EvolutionScene(u8 taskID);
+static void Task_TradeEvolutionScene(u8 taskID);
+static void CB2_EvolutionSceneUpdate(void);
+static void CB2_TradeEvolutionSceneUpdate(void);
+static void EvoDummyFunc(void);
+static void VBlankCB_EvolutionScene(void);
+static void VBlankCB_TradeEvolutionScene(void);
+static void sub_81150D8(void);
+static void sub_8140134(void);
+static void EvoScene_DoMonAnimation(u8 monSpriteId, u16 speciesId);
+static bool32 EvoScene_IsMonAnimFinished(u8 monSpriteId);
+static void InitMovingBackgroundTask(bool8 isLink);
+static void sub_813FEE8(u8 taskId);
+static void sub_8140174(void);
+
+static void CB2_BeginEvolutionScene(void)
+{
+    UpdatePaletteFade();
+    RunTasks();
+}
+
+#define tState              data[0]
+#define tPreEvoSpecies      data[1]
+#define tPostEvoSpecies     data[2]
+#define tCanStop            data[3]
+#define tBits               data[3]
+#define tLearnsFirstMove    data[4]
+#define tLearnMoveState     data[6]
+#define tData7              data[7]
+#define tData8              data[8]
+#define tEvoWasStopped      data[9]
+#define tPartyID            data[10]
+
+#define TASK_BIT_CAN_STOP       0x1
+#define TASK_BIT_LEARN_MOVE     0x80
+
+static void Task_BeginEvolutionScene(u8 taskID)
+{
+    struct Pokemon* mon = NULL;
+    switch (gTasks[taskID].tState)
+    {
+    case 0:
+        BeginNormalPaletteFade(-1, 0, 0, 0x10, 0);
+        gTasks[taskID].tState++;
+        break;
+    case 1:
+        if (!gPaletteFade.active)
+        {
+            u16 speciesToEvolve;
+            bool8 canStopEvo;
+            u8 partyID;
+
+            mon = &gPlayerParty[gTasks[taskID].tPartyID];
+            speciesToEvolve = gTasks[taskID].tPostEvoSpecies;
+            canStopEvo = gTasks[taskID].tCanStop;
+            partyID = gTasks[taskID].tPartyID;
+
+            DestroyTask(taskID);
+            EvolutionScene(mon, speciesToEvolve, canStopEvo, partyID);
+        }
+        break;
+    }
+}
+
+void BeginEvolutionScene(struct Pokemon* mon, u16 speciesToEvolve, bool8 canStopEvo, u8 partyID)
+{
+    u8 taskID = CreateTask(Task_BeginEvolutionScene, 0);
+    gTasks[taskID].tState = 0;
+    gTasks[taskID].tPostEvoSpecies = speciesToEvolve;
+    gTasks[taskID].tCanStop = canStopEvo;
+    gTasks[taskID].tPartyID = partyID;
+    SetMainCallback2(CB2_BeginEvolutionScene);
+}
+
+void EvolutionScene(struct Pokemon* mon, u16 speciesToEvolve, bool8 canStopEvo, u8 partyID)
+{
+    u8 name[20];
+    u16 currSpecies;
+    u32 trainerId, personality;
+    const struct CompressedSpritePalette* pokePal;
+    u8 ID;
+
+    SetHBlankCallback(NULL);
+    SetVBlankCallback(NULL);
+    CpuFill32(0, (void*)(VRAM), VRAM_SIZE);
+
+    SetGpuReg(REG_OFFSET_MOSAIC, 0);
+    SetGpuReg(REG_OFFSET_WIN0H, 0);
+    SetGpuReg(REG_OFFSET_WIN0V, 0);
+    SetGpuReg(REG_OFFSET_WIN1H, 0);
+    SetGpuReg(REG_OFFSET_WIN1V, 0);
+    SetGpuReg(REG_OFFSET_WININ, 0);
+    SetGpuReg(REG_OFFSET_WINOUT, 0);
+
+    ResetPaletteFade();
+
+    gBattle_BG0_X = 0;
+    gBattle_BG0_Y = 0;
+    gBattle_BG1_X = 0;
+    gBattle_BG1_Y = 0;
+    gBattle_BG2_X = 0;
+    gBattle_BG2_Y = 0;
+    gBattle_BG3_X = 256;
+    gBattle_BG3_Y = 0;
+
+    gBattleTerrain = BATTLE_TERRAIN_PLAIN;
+
+    sub_80356D0();
+    LoadBattleTextboxAndBackground();
+    ResetSpriteData();
+    remove_some_task();
+    ResetTasks();
+    FreeAllSpritePalettes();
+
+    gReservedSpritePaletteCount = 4;
+
+    sEvoStructPtr = AllocZeroed(sizeof(struct EvoInfo));
+    AllocateMonSpritesGfx();
+
+    GetMonData(mon, MON_DATA_NICKNAME, name);
+    StringCopy10(gStringVar1, name);
+    StringCopy(gStringVar2, gSpeciesNames[speciesToEvolve]);
+
+    // preEvo sprite
+    currSpecies = GetMonData(mon, MON_DATA_SPECIES);
+    trainerId = GetMonData(mon, MON_DATA_OT_ID);
+    personality = GetMonData(mon, MON_DATA_PERSONALITY);
+    DecompressPicFromTable_2(&gMonFrontPicTable[currSpecies],
+                             gMonSpritesGfxPtr->sprites[1],
+                             currSpecies);
+    pokePal = GetMonSpritePalStructFromOtIdPersonality(currSpecies, trainerId, personality);
+    LoadCompressedPalette(pokePal->data, 0x110, 0x20);
+
+    sub_806A068(currSpecies, 1);
+    gUnknown_0202499C.affineAnims = gDummySpriteAffineAnimTable;
+    sEvoStructPtr->preEvoSpriteID = ID = CreateSprite(&gUnknown_0202499C, 120, 64, 30);
+
+    gSprites[ID].callback = SpriteCallbackDummy_2;
+    gSprites[ID].oam.paletteNum = 1;
+    gSprites[ID].invisible = 1;
+
+    // postEvo sprite
+    DecompressPicFromTable_2(&gMonFrontPicTable[speciesToEvolve],
+                             gMonSpritesGfxPtr->sprites[3],
+                             speciesToEvolve);
+    pokePal = GetMonSpritePalStructFromOtIdPersonality(speciesToEvolve, trainerId, personality);
+    LoadCompressedPalette(pokePal->data, 0x120, 0x20);
+
+    sub_806A068(speciesToEvolve, 3);
+    gUnknown_0202499C.affineAnims = gDummySpriteAffineAnimTable;
+    sEvoStructPtr->postEvoSpriteID = ID = CreateSprite(&gUnknown_0202499C, 120, 64, 30);
+    gSprites[ID].callback = SpriteCallbackDummy_2;
+    gSprites[ID].oam.paletteNum = 2;
+    gSprites[ID].invisible = 1;
+
+    LoadEvoSparkleSpriteAndPal();
+
+    sEvoStructPtr->evoTaskID = ID = CreateTask(Task_EvolutionScene, 0);
+    gTasks[ID].tState = 0;
+    gTasks[ID].tPreEvoSpecies = currSpecies;
+    gTasks[ID].tPostEvoSpecies = speciesToEvolve;
+    gTasks[ID].tCanStop = canStopEvo;
+    gTasks[ID].tLearnsFirstMove = TRUE;
+    gTasks[ID].tEvoWasStopped = FALSE;
+    gTasks[ID].tPartyID = partyID;
+
+    memcpy(&sEvoStructPtr->savedPalette, &gPlttBufferUnfaded[0x20], 0x60);
+
+    SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_OBJ_ON | DISPCNT_BG_ALL_ON | DISPCNT_OBJ_1D_MAP);
+
+    SetHBlankCallback(EvoDummyFunc);
+    SetVBlankCallback(VBlankCB_EvolutionScene);
+    m4aMPlayAllStop();
+    SetMainCallback2(CB2_EvolutionSceneUpdate);
+}
+
+static void CB2_EvolutionSceneLoadGraphics(void)
+{
+    u8 ID;
+    const struct CompressedSpritePalette* pokePal;
+    u16 postEvoSpecies;
+    u32 trainerId, personality;
+    struct Pokemon* Mon = &gPlayerParty[gTasks[sEvoStructPtr->evoTaskID].tPartyID];
+
+    postEvoSpecies = gTasks[sEvoStructPtr->evoTaskID].tPostEvoSpecies;
+    trainerId = GetMonData(Mon, MON_DATA_OT_ID);
+    personality = GetMonData(Mon, MON_DATA_PERSONALITY);
+
+    SetHBlankCallback(NULL);
+    SetVBlankCallback(NULL);
+    CpuFill32(0, (void*)(VRAM), VRAM_SIZE);
+
+    SetGpuReg(REG_OFFSET_MOSAIC, 0);
+    SetGpuReg(REG_OFFSET_WIN0H, 0);
+    SetGpuReg(REG_OFFSET_WIN0V, 0);
+    SetGpuReg(REG_OFFSET_WIN1H, 0);
+    SetGpuReg(REG_OFFSET_WIN1V, 0);
+    SetGpuReg(REG_OFFSET_WININ, 0);
+    SetGpuReg(REG_OFFSET_WINOUT, 0);
+
+    ResetPaletteFade();
+
+    gBattle_BG0_X = 0;
+    gBattle_BG0_Y = 0;
+    gBattle_BG1_X = 0;
+    gBattle_BG1_Y = 0;
+    gBattle_BG2_X = 0;
+    gBattle_BG2_Y = 0;
+    gBattle_BG3_X = 256;
+    gBattle_BG3_Y = 0;
+
+    gBattleTerrain = BATTLE_TERRAIN_PLAIN;
+
+    sub_80356D0();
+    LoadBattleTextboxAndBackground();
+    ResetSpriteData();
+    FreeAllSpritePalettes();
+    gReservedSpritePaletteCount = 4;
+
+    DecompressPicFromTable_2(&gMonFrontPicTable[postEvoSpecies],
+                             gMonSpritesGfxPtr->sprites[3],
+                             postEvoSpecies);
+    pokePal = GetMonSpritePalStructFromOtIdPersonality(postEvoSpecies, trainerId, personality);
+
+    LoadCompressedPalette(pokePal->data, 0x120, 0x20);
+
+    sub_806A068(postEvoSpecies, 3);
+    gUnknown_0202499C.affineAnims = gDummySpriteAffineAnimTable;
+    sEvoStructPtr->postEvoSpriteID = ID = CreateSprite(&gUnknown_0202499C, 120, 64, 30);
+
+    gSprites[ID].callback = SpriteCallbackDummy_2;
+    gSprites[ID].oam.paletteNum = 2;
+
+    SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_OBJ_ON | DISPCNT_BG_ALL_ON | DISPCNT_OBJ_1D_MAP);
+
+    SetHBlankCallback(EvoDummyFunc);
+    SetVBlankCallback(VBlankCB_EvolutionScene);
+    SetMainCallback2(CB2_EvolutionSceneUpdate);
+
+    BeginNormalPaletteFade(-1, 0, 0x10, 0, 0);
+
+    ShowBg(0);
+    ShowBg(1);
+    ShowBg(2);
+    ShowBg(3);
+}
+
+static void CB2_TradeEvolutionSceneLoadGraphics(void)
+{
+    struct Pokemon* Mon = &gPlayerParty[gTasks[sEvoStructPtr->evoTaskID].tPartyID];
+    u16 postEvoSpecies = gTasks[sEvoStructPtr->evoTaskID].tPostEvoSpecies;
+
+    switch (gMain.state)
+    {
+    case 0:
+        SetGpuReg(REG_OFFSET_DISPCNT, 0);
+        SetHBlankCallback(NULL);
+        SetVBlankCallback(NULL);
+        ResetSpriteData();
+        FreeAllSpritePalettes();
+        gReservedSpritePaletteCount = 4;
+        gBattle_BG0_X = 0;
+        gBattle_BG0_Y = 0;
+        gBattle_BG1_X = 0;
+        gBattle_BG1_Y = 0;
+        gBattle_BG2_X = 0;
+        gBattle_BG2_Y = 0;
+        gBattle_BG3_X = 256;
+        gBattle_BG3_Y = 0;
+        gMain.state++;
+        break;
+    case 1:
+        ResetPaletteFade();
+        SetHBlankCallback(EvoDummyFunc);
+        SetVBlankCallback(VBlankCB_TradeEvolutionScene);
+        gMain.state++;
+        break;
+    case 2:
+        sub_807F19C();
+        gMain.state++;
+        break;
+    case 3:
+        FillBgTilemapBufferRect(1, 0, 0, 0, 0x20, 0x20, 0x11);
+        CopyBgTilemapBufferToVram(1);
+        gMain.state++;
+        break;
+    case 4:
+        {
+            const struct CompressedSpritePalette* pokePal;
+            u32 trainerId = GetMonData(Mon, MON_DATA_OT_ID);
+            u32 personality = GetMonData(Mon, MON_DATA_PERSONALITY);
+            DecompressPicFromTable_2(&gMonFrontPicTable[postEvoSpecies],
+                                     gMonSpritesGfxPtr->sprites[3],
+                                     postEvoSpecies);
+            pokePal = GetMonSpritePalStructFromOtIdPersonality(postEvoSpecies, trainerId, personality);
+            LoadCompressedPalette(pokePal->data, 0x120, 0x20);
+            gMain.state++;
+        }
+        break;
+    case 5:
+        {
+            u8 ID;
+
+            sub_806A068(postEvoSpecies, 1);
+            gUnknown_0202499C.affineAnims = gDummySpriteAffineAnimTable;
+            sEvoStructPtr->postEvoSpriteID = ID = CreateSprite(&gUnknown_0202499C, 120, 64, 30);
+
+            gSprites[ID].callback = SpriteCallbackDummy_2;
+            gSprites[ID].oam.paletteNum = 2;
+            gMain.state++;
+            sub_807B154();
+        }
+        break;
+    case 6:
+        if (gLinkVSyncDisabled)
+        {
+            sub_800E0E8();
+            sub_800DFB4(0, 0);
+        }
+        BlendPalettes(-1,0x10, 0);
+        gMain.state++;
+        break;
+    case 7:
+        BeginNormalPaletteFade(-1, 0, 0x10, 0, 0);
+        sub_807B140();
+        ShowBg(0);
+        ShowBg(1);
+        SetMainCallback2(CB2_TradeEvolutionSceneUpdate);
+        SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_OBJ_ON | DISPCNT_BG0_ON | DISPCNT_BG1_ON | DISPCNT_OBJ_1D_MAP);
+        break;
+    }
+}
+
+void TradeEvolutionScene(struct Pokemon* mon, u16 speciesToEvolve, u8 preEvoSpriteID, u8 partyID)
+{
+    u8 name[20];
+    u16 currSpecies;
+    u32 trainerId, personality;
+    const struct CompressedSpritePalette* pokePal;
+    u8 ID;
+
+    GetMonData(mon, MON_DATA_NICKNAME, name);
+    StringCopy10(gStringVar1, name);
+    StringCopy(gStringVar2, gSpeciesNames[speciesToEvolve]);
+
+    gAffineAnimsDisabled = TRUE;
+
+    // preEvo sprite
+    currSpecies = GetMonData(mon, MON_DATA_SPECIES);
+    personality = GetMonData(mon, MON_DATA_PERSONALITY);
+    trainerId = GetMonData(mon, MON_DATA_OT_ID);
+
+    sEvoStructPtr = AllocZeroed(sizeof(struct EvoInfo));
+    sEvoStructPtr->preEvoSpriteID = preEvoSpriteID;
+
+    DecompressPicFromTable_2(&gMonFrontPicTable[speciesToEvolve],
+                            gMonSpritesGfxPtr->sprites[1],
+                            speciesToEvolve);
+
+    pokePal = GetMonSpritePalStructFromOtIdPersonality(speciesToEvolve, trainerId, personality);
+    LoadCompressedPalette(pokePal->data, 0x120, 0x20);
+
+    sub_806A068(speciesToEvolve, 1);
+    gUnknown_0202499C.affineAnims = gDummySpriteAffineAnimTable;
+    sEvoStructPtr->postEvoSpriteID = ID = CreateSprite(&gUnknown_0202499C, 120, 64, 30);
+
+    gSprites[ID].callback = SpriteCallbackDummy_2;
+    gSprites[ID].oam.paletteNum = 2;
+    gSprites[ID].invisible = 1;
+
+    LoadEvoSparkleSpriteAndPal();
+
+    sEvoStructPtr->evoTaskID = ID = CreateTask(Task_TradeEvolutionScene, 0);
+    gTasks[ID].tState = 0;
+    gTasks[ID].tPreEvoSpecies = currSpecies;
+    gTasks[ID].tPostEvoSpecies = speciesToEvolve;
+    gTasks[ID].tLearnsFirstMove = TRUE;
+    gTasks[ID].tEvoWasStopped = FALSE;
+    gTasks[ID].tPartyID = partyID;
+
+    gBattle_BG0_X = 0;
+    gBattle_BG0_Y = 0;
+    gBattle_BG1_X = 0;
+    gBattle_BG1_Y = 0;
+    gBattle_BG2_X = 0;
+    gBattle_BG2_Y = 0;
+    gBattle_BG3_X = 256;
+    gBattle_BG3_Y = 0;
+
+    gTextFlags.flag_1 = 1;
+
+    SetVBlankCallback(VBlankCB_TradeEvolutionScene);
+    SetMainCallback2(CB2_TradeEvolutionSceneUpdate);
+}
+
+static void CB2_EvolutionSceneUpdate(void)
+{
+    AnimateSprites();
+    BuildOamBuffer();
+    RunTextPrinters();
+    UpdatePaletteFade();
+    RunTasks();
+}
+
+static void CB2_TradeEvolutionSceneUpdate(void)
+{
+    AnimateSprites();
+    BuildOamBuffer();
+    RunTextPrinters();
+    UpdatePaletteFade();
+    RunTasks();
+}
+
+static void CreateShedinja(u16 preEvoSpecies, struct Pokemon* mon)
+{
+    u32 data = 0;
+    if (gEvolutionTable[preEvoSpecies].evolutions[0].method == EVO_LEVEL_NINJASK && gPlayerPartyCount < 6)
+    {
+        s32 i;
+        struct Pokemon* Shedinja = &gPlayerParty[gPlayerPartyCount];
+        const struct EvolutionData* evoTable;
+        const struct EvolutionData* evos;
+
+        CopyMon(&gPlayerParty[gPlayerPartyCount], mon, sizeof(struct Pokemon));
+        SetMonData(&gPlayerParty[gPlayerPartyCount], MON_DATA_SPECIES, (&gEvolutionTable[preEvoSpecies].evolutions[1].targetSpecies));
+        SetMonData(&gPlayerParty[gPlayerPartyCount], MON_DATA_NICKNAME, (gSpeciesNames[gEvolutionTable[preEvoSpecies].evolutions[1].targetSpecies]));
+        SetMonData(&gPlayerParty[gPlayerPartyCount], MON_DATA_HELD_ITEM, (&data));
+        SetMonData(&gPlayerParty[gPlayerPartyCount], MON_DATA_MARKINGS, (&data));
+        SetMonData(&gPlayerParty[gPlayerPartyCount], MON_DATA_10, (&data));
+
+        for (i = MON_DATA_COOL_RIBBON; i < MON_DATA_COOL_RIBBON + 5; i++)
+            SetMonData(&gPlayerParty[gPlayerPartyCount], i, (&data));
+        for (i = MON_DATA_CHAMPION_RIBBON; i <= MON_DATA_FATEFUL_ENCOUNTER; i++)
+            SetMonData(&gPlayerParty[gPlayerPartyCount], i, (&data));
+
+        SetMonData(&gPlayerParty[gPlayerPartyCount], MON_DATA_STATUS, (&data));
+        data = 0xFF;
+        SetMonData(&gPlayerParty[gPlayerPartyCount], MON_DATA_MAIL, (&data));
+
+        CalculateMonStats(&gPlayerParty[gPlayerPartyCount]);
+        CalculatePlayerPartyCount();
+
+        // can't match it otherwise, ehh
+        evoTable = gEvolutionTable;
+        evos = evoTable + preEvoSpecies;
+        GetSetPokedexFlag(SpeciesToNationalPokedexNum(evos->evolutions[1].targetSpecies), FLAG_SET_SEEN);
+        GetSetPokedexFlag(SpeciesToNationalPokedexNum(evos->evolutions[1].targetSpecies), FLAG_SET_CAUGHT);
+
+        if (GetMonData(Shedinja, MON_DATA_SPECIES) == SPECIES_SHEDINJA
+            && GetMonData(Shedinja, MON_DATA_LANGUAGE) == LANGUAGE_JAPANESE
+            && GetMonData(mon, MON_DATA_SPECIES) == SPECIES_NINJASK)
+                SetMonData(Shedinja, MON_DATA_NICKNAME, gText_ShedinjaJapaneseName2);
+    }
+}
+
+static void Task_EvolutionScene(u8 taskID)
+{
+    u32 var;
+    struct Pokemon* mon = &gPlayerParty[gTasks[taskID].tPartyID];
+
+    // check if B Button was held, so the evolution gets stopped
+    if (gMain.heldKeys == B_BUTTON
+        && gTasks[taskID].tState == 8
+        && gTasks[sEvoGraphicsTaskID].isActive
+        && gTasks[taskID].tBits & TASK_BIT_CAN_STOP)
+    {
+        gTasks[taskID].tState = 17;
+        gTasks[sEvoGraphicsTaskID].EvoGraphicsTaskEvoStop = TRUE;
+        sub_8140134();
+        return;
+    }
+
+    switch (gTasks[taskID].tState)
+    {
+    case 0:
+        BeginNormalPaletteFade(-1, 0, 0x10, 0, 0);
+        gSprites[sEvoStructPtr->preEvoSpriteID].invisible = 0;
+        gTasks[taskID].tState++;
+        ShowBg(0);
+        ShowBg(1);
+        ShowBg(2);
+        ShowBg(3);
+        break;
+    case 1: // print 'whoa, poke is evolving!!!' msg
+        if (!gPaletteFade.active)
+        {
+            StringExpandPlaceholders(gStringVar4, gText_PkmnIsEvolving);
+            BattleHandleAddTextPrinter(gStringVar4, 0);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 2: // wait for string, animate mon(and play its cry)
+        if (!IsTextPrinterActive(0))
+        {
+            EvoScene_DoMonAnimation(sEvoStructPtr->preEvoSpriteID, gTasks[taskID].tPreEvoSpecies);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 3:
+        if (EvoScene_IsMonAnimFinished(sEvoStructPtr->preEvoSpriteID)) // wait for animation, play tu du SE
+        {
+            PlaySE(BGM_ME_SHINKA);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 4: // play evolution music and fade screen black
+        if (!IsSEPlaying())
+        {
+            PlayNewMapMusic(BGM_SHINKA);
+            gTasks[taskID].tState++;
+            BeginNormalPaletteFade(0x1C, 4, 0, 0x10, 0);
+        }
+        break;
+    case 5: // launch moving bg task, preapre evo sparkles
+        if (!gPaletteFade.active)
+        {
+            InitMovingBackgroundTask(FALSE);
+            sEvoGraphicsTaskID = LaunchTask_PreEvoSparklesSet1(17);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 6: // another set of evo sparkles
+        if (!gTasks[sEvoGraphicsTaskID].isActive)
+        {
+            gTasks[taskID].tState++;
+            sEvoStructPtr->field_3 = 1;
+            sEvoGraphicsTaskID = LaunchTask_PreEvoSparklesSet2();
+        }
+        break;
+    case 7: // launch task that flashes pre evo with post evo sprites
+        if (!gTasks[sEvoGraphicsTaskID].isActive)
+        {
+            sEvoGraphicsTaskID = sub_817C3A0(sEvoStructPtr->preEvoSpriteID, sEvoStructPtr->postEvoSpriteID);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 8: // wait for the above task to finish
+        if (--sEvoStructPtr->field_3 == 0)
+        {
+            sEvoStructPtr->field_3 = 3;
+            if (!gTasks[sEvoGraphicsTaskID].isActive)
+                gTasks[taskID].tState++;
+        }
+        break;
+    case 9: // post evo sparkles
+        sEvoGraphicsTaskID = LaunchTask_PostEvoSparklesSet1();
+        gTasks[taskID].tState++;
+        break;
+    case 10:
+        if (!gTasks[sEvoGraphicsTaskID].isActive)
+        {
+            sEvoGraphicsTaskID = LaunchTask_PostEvoSparklesSet2AndFlash(gTasks[taskID].tPostEvoSpecies);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 11: // play tu du sound after evolution
+        if (!gTasks[sEvoGraphicsTaskID].isActive)
+        {
+            PlaySE(SE_EXP);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 12: // stop music, return screen to pre-fade state
+        if (IsSEPlaying())
+        {
+            m4aMPlayAllStop();
+            memcpy(&gPlttBufferUnfaded[0x20], sEvoStructPtr->savedPalette, 0x60);
+            sub_8140174();
+            BeginNormalPaletteFade(0x1C, 0, 0x10, 0, 0);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 13: // animate mon
+        if (!gPaletteFade.active)
+        {
+            EvoScene_DoMonAnimation(sEvoStructPtr->postEvoSpriteID, gTasks[taskID].tPostEvoSpecies);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 14: // congratulations string and rename prompt
+        if (IsCryFinished())
+        {
+            StringExpandPlaceholders(gStringVar4, gText_CongratsPkmnEvolved);
+            BattleHandleAddTextPrinter(gStringVar4, 0);
+            PlayBGM(BGM_FANFA5);
+            gTasks[taskID].tState++;
+            SetMonData(mon, MON_DATA_SPECIES, (void*)(&gTasks[taskID].tPostEvoSpecies));
+            CalculateMonStats(mon);
+            EvolutionRenameMon(mon, gTasks[taskID].tPreEvoSpecies, gTasks[taskID].tPostEvoSpecies);
+            GetSetPokedexFlag(SpeciesToNationalPokedexNum(gTasks[taskID].tPostEvoSpecies), FLAG_SET_SEEN);
+            GetSetPokedexFlag(SpeciesToNationalPokedexNum(gTasks[taskID].tPostEvoSpecies), FLAG_SET_CAUGHT);
+            IncrementGameStat(GAME_STAT_EVOLVED_POKEMON);
+        }
+        break;
+    case 15: // check if it wants to learn a new move
+        if (!IsTextPrinterActive(0))
+        {
+            var = MonTryLearningNewMove(mon, gTasks[taskID].tLearnsFirstMove);
+            if (var != 0 && !gTasks[taskID].tEvoWasStopped)
+            {
+                u8 text[20];
+
+                if (!(gTasks[taskID].tBits & TASK_BIT_LEARN_MOVE))
+                {
+                    StopMapMusic();
+                    sub_8085784();
+                }
+
+                gTasks[taskID].tBits |= TASK_BIT_LEARN_MOVE;
+                gTasks[taskID].tLearnsFirstMove = FALSE;
+                gTasks[taskID].tLearnMoveState = 0;
+                GetMonData(mon, MON_DATA_NICKNAME, text);
+                StringCopy10(gBattleTextBuff1, text);
+
+                if (var == 0xFFFF) // no place to learn it
+                    gTasks[taskID].tState = 22;
+                else if (var == 0xFFFE) // it already knows that move
+                    break;
+                else
+                    gTasks[taskID].tState = 20; // has less than 4 moves, so it's been learned
+            }
+            else // no move to learn
+            {
+                BeginNormalPaletteFade(-1, 0, 0, 0x10, 0);
+                gTasks[taskID].tState++;
+            }
+        }
+        break;
+    case 16: // task has finished, return
+        if (!gPaletteFade.active)
+        {
+            if (!(gTasks[taskID].tBits & TASK_BIT_LEARN_MOVE))
+            {
+                StopMapMusic();
+                sub_8085784();
+            }
+            if (!gTasks[taskID].tEvoWasStopped)
+                CreateShedinja(gTasks[taskID].tPreEvoSpecies, mon);
+
+            DestroyTask(taskID);
+            FreeMonSpritesGfx();
+            Free(sEvoStructPtr);
+            sEvoStructPtr = NULL;
+            FreeAllWindowBuffers();
+            SetMainCallback2(gCB2_AfterEvolution);
+        }
+        break;
+    case 17: // evolution has been canceled, stop music and re-fade palette
+        if (!gTasks[sEvoGraphicsTaskID].isActive)
+        {
+            m4aMPlayAllStop();
+            BeginNormalPaletteFade(0x6001C, 0, 0x10, 0, 0x7FFF);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 18: // animate pokemon trying to evolve again, evolution has been stopped
+        if (!gPaletteFade.active)
+        {
+            EvoScene_DoMonAnimation(sEvoStructPtr->preEvoSpriteID, gTasks[taskID].tPreEvoSpecies);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 19: // after the animation, print the string 'WHOA IT DID NOT EVOLVE!!!'
+        if (EvoScene_IsMonAnimFinished(sEvoStructPtr->preEvoSpriteID))
+        {
+            if (gTasks[taskID].tEvoWasStopped)
+                StringExpandPlaceholders(gStringVar4, gText_EllipsisQuestionMark);
+            else // Fire Red leftover probably
+                StringExpandPlaceholders(gStringVar4, gText_PkmnStoppedEvolving);
+
+            BattleHandleAddTextPrinter(gStringVar4, 0);
+            gTasks[taskID].tEvoWasStopped = TRUE;
+            gTasks[taskID].tState = 15;
+        }
+        break;
+    case 20: // pokemon learned a new move, print string and play a fanfare
+        if (!IsTextPrinterActive(0) && !IsSEPlaying())
+        {
+            BufferMoveToLearnIntoBattleTextBuff2();
+            PlayFanfare(BGM_FANFA1);
+            BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[3]);
+            BattleHandleAddTextPrinter(gDisplayedStringBattle, 0);
+            gTasks[taskID].tLearnsFirstMove = 0x40; // re-used as a counter
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 21: // wait a bit and check if can learn another move
+        if (!IsTextPrinterActive(0) && !IsSEPlaying() && --gTasks[taskID].tLearnsFirstMove == 0)
+            gTasks[taskID].tState = 15;
+        break;
+    case 22: // try to learn a new move
+        switch (gTasks[taskID].tLearnMoveState)
+        {
+        case 0:
+            if (!IsTextPrinterActive(0) && !IsSEPlaying())
+            {
+                BufferMoveToLearnIntoBattleTextBuff2();
+                BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[4]);
+                BattleHandleAddTextPrinter(gDisplayedStringBattle, 0);
+                gTasks[taskID].tLearnMoveState++;
+            }
+            break;
+        case 1:
+            if (!IsTextPrinterActive(0) && !IsSEPlaying())
+            {
+                BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[5]);
+                BattleHandleAddTextPrinter(gDisplayedStringBattle, 0);
+                gTasks[taskID].tLearnMoveState++;
+            }
+            break;
+        case 2:
+            if (!IsTextPrinterActive(0) && !IsSEPlaying())
+            {
+                BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[6]);
+                BattleHandleAddTextPrinter(gDisplayedStringBattle, 0);
+                gTasks[taskID].tData7 = 5;
+                gTasks[taskID].tData8 = 10;
+                gTasks[taskID].tLearnMoveState++;
+            }
+        case 3:
+            if (!IsTextPrinterActive(0) && !IsSEPlaying())
+            {
+                HandleBattleWindow(0x18, 8, 0x1D, 0xD, 0);
+                BattleHandleAddTextPrinter(gText_BattleYesNoChoice, 0xC);
+                gTasks[taskID].tLearnMoveState++;
+                sEvoCursorPos = 0;
+                BattleCreateYesNoCursorAt(0);
+            }
+            break;
+        case 4:
+            if (gMain.newKeys & DPAD_UP && sEvoCursorPos != 0)
+            {
+                PlaySE(SE_SELECT);
+                BattleDestroyYesNoCursorAt(sEvoCursorPos);
+                sEvoCursorPos = 0;
+                BattleCreateYesNoCursorAt(0);
+            }
+            if (gMain.newKeys & DPAD_DOWN && sEvoCursorPos == 0)
+            {
+                PlaySE(SE_SELECT);
+                BattleDestroyYesNoCursorAt(sEvoCursorPos);
+                sEvoCursorPos = 1;
+                BattleCreateYesNoCursorAt(1);
+            }
+            if (gMain.newKeys & A_BUTTON)
+            {
+                HandleBattleWindow(0x18, 8, 0x1D, 0xD, WINDOW_CLEAR);
+                PlaySE(SE_SELECT);
+
+                if (sEvoCursorPos != 0)
+                {
+                    gTasks[taskID].tLearnMoveState = gTasks[taskID].tData8;
+                }
+                else
+                {
+                    gTasks[taskID].tLearnMoveState = gTasks[taskID].tData7;
+                    if (gTasks[taskID].tLearnMoveState == 5)
+                        BeginNormalPaletteFade(-1, 0, 0, 0x10, 0);
+                }
+            }
+            if (gMain.newKeys & B_BUTTON)
+            {
+                HandleBattleWindow(0x18, 8, 0x1D, 0xD, WINDOW_CLEAR);
+                PlaySE(SE_SELECT);
+                gTasks[taskID].tLearnMoveState = gTasks[taskID].tData8;
+            }
+            break;
+        case 5:
+            if (!gPaletteFade.active)
+            {
+                FreeAllWindowBuffers();
+                sub_81BFA38(gPlayerParty, gTasks[taskID].tPartyID,
+                            gPlayerPartyCount - 1, CB2_EvolutionSceneLoadGraphics,
+                            gMoveToLearn);
+                gTasks[taskID].tLearnMoveState++;
+            }
+            break;
+        case 6:
+            if (!gPaletteFade.active && gMain.callback2 == CB2_EvolutionSceneUpdate)
+            {
+                var = sub_81C1B94(); // moveID
+                if (var == 4)
+                {
+                    gTasks[taskID].tLearnMoveState = 10;
+                }
+                else
+                {
+                    u16 move = GetMonData(mon, var + MON_DATA_MOVE1);
+                    if (IsHMMove2(move))
+                    {
+                        BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[307]);
+                        BattleHandleAddTextPrinter(gDisplayedStringBattle, 0);
+                        gTasks[taskID].tLearnMoveState = 12;
+                    }
+                    else
+                    {
+                        PREPARE_MOVE_BUFFER(gBattleTextBuff2, move)
+
+                        RemoveMonPPBonus(mon, var);
+                        SetMonMoveSlot(mon, gMoveToLearn, var);
+                        gTasks[taskID].tLearnMoveState++;
+                    }
+                }
+            }
+            break;
+        case 7:
+            BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[207]);
+            BattleHandleAddTextPrinter(gDisplayedStringBattle, 0);
+            gTasks[taskID].tLearnMoveState++;
+            break;
+        case 8:
+            if (!IsTextPrinterActive(0) && !IsSEPlaying())
+            {
+                BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[7]);
+                BattleHandleAddTextPrinter(gDisplayedStringBattle, 0);
+                gTasks[taskID].tLearnMoveState++;
+            }
+            break;
+        case 9:
+            if (!IsTextPrinterActive(0) && !IsSEPlaying())
+            {
+                BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[208]);
+                BattleHandleAddTextPrinter(gDisplayedStringBattle, 0);
+                gTasks[taskID].tState = 20;
+            }
+            break;
+        case 10:
+            BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[8]);
+            BattleHandleAddTextPrinter(gDisplayedStringBattle, 0);
+            gTasks[taskID].tData7 = 11;
+            gTasks[taskID].tData8 = 0;
+            gTasks[taskID].tLearnMoveState = 3;
+            break;
+        case 11:
+            BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[9]);
+            BattleHandleAddTextPrinter(gDisplayedStringBattle, 0);
+            gTasks[taskID].tState = 15;
+            break;
+        case 12:
+            if (!IsTextPrinterActive(0) && !IsSEPlaying())
+                gTasks[taskID].tLearnMoveState = 5;
+            break;
+        }
+        break;
+    }
+}
+
+static void Task_TradeEvolutionScene(u8 taskID)
+{
+    u32 var = 0;
+    struct Pokemon* mon = &gPlayerParty[gTasks[taskID].tPartyID];
+
+    switch (gTasks[taskID].tState)
+    {
+    case 0:
+        StringExpandPlaceholders(gStringVar4, gText_PkmnIsEvolving);
+        sub_807F1A8(0, gStringVar4, 1);
+        gTasks[taskID].tState++;
+        break;
+    case 1:
+        if (!IsTextPrinterActive(0))
+        {
+            PlayCry1(gTasks[taskID].tPreEvoSpecies, 0);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 2:
+        if (IsCryFinished())
+        {
+            m4aSongNumStop(BGM_SHINKA);
+            PlaySE(BGM_ME_SHINKA);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 3:
+        if (!IsSEPlaying())
+        {
+            PlayBGM(BGM_SHINKA);
+            gTasks[taskID].tState++;
+            BeginNormalPaletteFade(0x1C, 4, 0, 0x10, 0);
+        }
+        break;
+    case 4:
+        if (!gPaletteFade.active)
+        {
+            InitMovingBackgroundTask(TRUE);
+            var = gSprites[sEvoStructPtr->preEvoSpriteID].oam.paletteNum + 16;
+            sEvoGraphicsTaskID = LaunchTask_PreEvoSparklesSet1(var);
+            gTasks[taskID].tState++;
+            SetGpuReg(REG_OFFSET_BG3CNT, 0x603);
+        }
+        break;
+    case 5:
+        if (!gTasks[sEvoGraphicsTaskID].isActive)
+        {
+            gTasks[taskID].tState++;
+            sEvoStructPtr->field_3 = 1;
+            sEvoGraphicsTaskID = LaunchTask_PreEvoSparklesSet2();
+        }
+        break;
+    case 6:
+        if (!gTasks[sEvoGraphicsTaskID].isActive)
+        {
+            sEvoGraphicsTaskID = sub_817C3A0(sEvoStructPtr->preEvoSpriteID, sEvoStructPtr->postEvoSpriteID);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 7:
+        if (--sEvoStructPtr->field_3 == 0)
+        {
+            sEvoStructPtr->field_3 = 3;
+            if (!gTasks[sEvoGraphicsTaskID].isActive)
+                gTasks[taskID].tState++;
+        }
+        break;
+    case 8:
+        sEvoGraphicsTaskID = LaunchTask_PostEvoSparklesSet1();
+        gTasks[taskID].tState++;
+        break;
+    case 9:
+        if (!gTasks[sEvoGraphicsTaskID].isActive)
+        {
+            sEvoGraphicsTaskID = LaunchTask_PostEvoSparklesSet2AndFlash_Trade(gTasks[taskID].tPostEvoSpecies);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 10:
+        if (!gTasks[sEvoGraphicsTaskID].isActive)
+        {
+            PlaySE(SE_EXP);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 11:
+        if (IsSEPlaying())
+        {
+            Free(sEvoMovingBgPtr);
+            EvoScene_DoMonAnimation(sEvoStructPtr->postEvoSpriteID, gTasks[taskID].tPostEvoSpecies);
+            memcpy(&gPlttBufferUnfaded[0x20], sEvoStructPtr->savedPalette, 0x60);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 12:
+        if (IsCryFinished())
+        {
+            StringExpandPlaceholders(gStringVar4, gText_CongratsPkmnEvolved);
+            sub_807F1A8(0, gStringVar4, 1);
+            PlayFanfare(BGM_FANFA5);
+            gTasks[taskID].tState++;
+            SetMonData(mon, MON_DATA_SPECIES, (&gTasks[taskID].tPostEvoSpecies));
+            CalculateMonStats(mon);
+            EvolutionRenameMon(mon, gTasks[taskID].tPreEvoSpecies, gTasks[taskID].tPostEvoSpecies);
+            GetSetPokedexFlag(SpeciesToNationalPokedexNum(gTasks[taskID].tPostEvoSpecies), FLAG_SET_SEEN);
+            GetSetPokedexFlag(SpeciesToNationalPokedexNum(gTasks[taskID].tPostEvoSpecies), FLAG_SET_CAUGHT);
+            IncrementGameStat(GAME_STAT_EVOLVED_POKEMON);
+        }
+        break;
+    case 13:
+        if (!IsTextPrinterActive(0) && IsFanfareTaskInactive() == TRUE)
+        {
+            var = MonTryLearningNewMove(mon, gTasks[taskID].tLearnsFirstMove);
+            if (var != 0 && !gTasks[taskID].tEvoWasStopped)
+            {
+                u8 text[20];
+
+                gTasks[taskID].tBits |= TASK_BIT_LEARN_MOVE;
+                gTasks[taskID].tLearnsFirstMove = FALSE;
+                gTasks[taskID].tLearnMoveState = 0;
+                GetMonData(mon, MON_DATA_NICKNAME, text);
+                StringCopy10(gBattleTextBuff1, text);
+
+                if (var == 0xFFFF)
+                    gTasks[taskID].tState = 20;
+                else if (var == 0xFFFE)
+                    break;
+                else
+                    gTasks[taskID].tState = 18;
+            }
+            else
+            {
+                PlayBGM(BGM_SHINKA);
+                sub_807F1A8(0, gText_CommunicationStandby5, 1);
+                gTasks[taskID].tState++;
+            }
+        }
+        break;
+    case 14:
+        if (!IsTextPrinterActive(0))
+        {
+            DestroyTask(taskID);
+            Free(sEvoStructPtr);
+            sEvoStructPtr = NULL;
+            gTextFlags.flag_1 = 0;
+            SetMainCallback2(gCB2_AfterEvolution);
+        }
+        break;
+    case 15:
+        if (!gTasks[sEvoGraphicsTaskID].isActive)
+        {
+            m4aMPlayAllStop();
+            BeginNormalPaletteFade((1 << (gSprites[sEvoStructPtr->preEvoSpriteID].oam.paletteNum + 16)) | (0x4001C), 0, 0x10, 0, 0x7FFF);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 16:
+        if (!gPaletteFade.active)
+        {
+            EvoScene_DoMonAnimation(sEvoStructPtr->preEvoSpriteID, gTasks[taskID].tPreEvoSpecies);
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 17:
+        if (EvoScene_IsMonAnimFinished(sEvoStructPtr->preEvoSpriteID))
+        {
+            StringExpandPlaceholders(gStringVar4, gText_EllipsisQuestionMark);
+            sub_807F1A8(0, gStringVar4, 1);
+            gTasks[taskID].tEvoWasStopped = 1;
+            gTasks[taskID].tState = 13;
+        }
+        break;
+    case 18:
+        if (!IsTextPrinterActive(0) && !IsSEPlaying())
+        {
+            BufferMoveToLearnIntoBattleTextBuff2();
+            PlayFanfare(BGM_FANFA1);
+            BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[3]);
+            sub_807F1A8(0, gDisplayedStringBattle, 1);
+            gTasks[taskID].tLearnsFirstMove = 0x40; // re-used as a counter
+            gTasks[taskID].tState++;
+        }
+        break;
+    case 19:
+        if (!IsTextPrinterActive(0) && IsFanfareTaskInactive() == TRUE && --gTasks[taskID].tLearnsFirstMove == 0)
+            gTasks[taskID].tState = 13;
+        break;
+    case 20:
+        switch (gTasks[taskID].tLearnMoveState)
+        {
+        case 0:
+            if (!IsTextPrinterActive(0) && !IsSEPlaying())
+            {
+                BufferMoveToLearnIntoBattleTextBuff2();
+                BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[4]);
+                sub_807F1A8(0, gDisplayedStringBattle, 1);
+                gTasks[taskID].tLearnMoveState++;
+            }
+            break;
+        case 1:
+            if (!IsTextPrinterActive(0) && !IsSEPlaying())
+            {
+                BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[5]);
+                sub_807F1A8(0, gDisplayedStringBattle, 1);
+                gTasks[taskID].tLearnMoveState++;
+            }
+            break;
+        case 2:
+            if (!IsTextPrinterActive(0) && !IsSEPlaying())
+            {
+                BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[6]);
+                sub_807F1A8(0, gDisplayedStringBattle, 1);
+                gTasks[taskID].tData7 = 5;
+                gTasks[taskID].tData8 = 9;
+                gTasks[taskID].tLearnMoveState++;
+            }
+        case 3:
+            if (!IsTextPrinterActive(0) && !IsSEPlaying())
+            {
+                sub_809882C(0, 0xA8, 0xE0);
+                CreateYesNoMenu(&gUnknown_0833900C, 0xA8, 0xE, 0);
+                sEvoCursorPos = 0;
+                gTasks[taskID].tLearnMoveState++;
+                sEvoCursorPos = 0;
+            }
+            break;
+        case 4:
+            switch (sub_8198C58())
+            {
+            case 0:
+                sEvoCursorPos = 0;
+                BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[292]);
+                sub_807F1A8(0, gDisplayedStringBattle, 1);
+                gTasks[taskID].tLearnMoveState = gTasks[taskID].tData7;
+                if (gTasks[taskID].tLearnMoveState == 5)
+                    BeginNormalPaletteFade(-1, 0, 0, 0x10, 0);
+                break;
+            case 1:
+            case -1:
+                sEvoCursorPos = 1;
+                BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[292]);
+                sub_807F1A8(0, gDisplayedStringBattle, 1);
+                gTasks[taskID].tLearnMoveState = gTasks[taskID].tData8;
+                break;
+            }
+            break;
+        case 5:
+            if (!gPaletteFade.active)
+            {
+                if (gLinkVSyncDisabled)
+                    sub_800E084();
+
+                Free(GetBgTilemapBuffer(3));
+                Free(GetBgTilemapBuffer(1));
+                Free(GetBgTilemapBuffer(0));
+                FreeAllWindowBuffers();
+
+                sub_81BFA38(gPlayerParty, gTasks[taskID].tPartyID,
+                            gPlayerPartyCount - 1, CB2_TradeEvolutionSceneLoadGraphics,
+                            gMoveToLearn);
+                gTasks[taskID].tLearnMoveState++;
+            }
+            break;
+        case 6:
+            if (!gPaletteFade.active && gMain.callback2 == CB2_TradeEvolutionSceneUpdate)
+            {
+                var = sub_81C1B94(); // moveID
+                if (var == 4)
+                {
+                    gTasks[taskID].tLearnMoveState = 9;
+                }
+                else
+                {
+                    u16 move = GetMonData(mon, var + MON_DATA_MOVE1);
+                    if (IsHMMove2(move))
+                    {
+                        BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[307]);
+                        sub_807F1A8(0, gDisplayedStringBattle, 1);
+                        gTasks[taskID].tLearnMoveState = 11;
+                    }
+                    else
+                    {
+                        PREPARE_MOVE_BUFFER(gBattleTextBuff2, move)
+
+                        RemoveMonPPBonus(mon, var);
+                        SetMonMoveSlot(mon, gMoveToLearn, var);
+                        BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[207]);
+                        sub_807F1A8(0, gDisplayedStringBattle, 1);
+                        gTasks[taskID].tLearnMoveState++;
+                    }
+                }
+            }
+            break;
+        case 7:
+            if (!IsTextPrinterActive(0) && !IsSEPlaying())
+            {
+                BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[7]);
+                sub_807F1A8(0, gDisplayedStringBattle, 1);
+                gTasks[taskID].tLearnMoveState++;
+            }
+            break;
+        case 8:
+            if (!IsTextPrinterActive(0) && !IsSEPlaying())
+            {
+                BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[208]);
+                sub_807F1A8(0, gDisplayedStringBattle, 1);
+                gTasks[taskID].tState = 18;
+            }
+            break;
+        case 9:
+            BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[8]);
+            sub_807F1A8(0, gDisplayedStringBattle, 1);
+            gTasks[taskID].tData7 = 10;
+            gTasks[taskID].tData8 = 0;
+            gTasks[taskID].tLearnMoveState = 3;
+            break;
+        case 10:
+            BattleStringExpandPlaceholdersToDisplayedString(gBattleStringsTable[9]);
+            sub_807F1A8(0, gDisplayedStringBattle, 1);
+            gTasks[taskID].tState = 13;
+            break;
+        case 11:
+            if (!IsTextPrinterActive(0) && !IsSEPlaying())
+                gTasks[taskID].tLearnMoveState = 5;
+            break;
+        }
+        break;
+    }
+}
+
+#undef tState
+#undef tPreEvoSpecies
+#undef tPostEvoSpecies
+#undef tCanStop
+#undef tBits
+#undef tLearnsFirstMove
+#undef tLearnMoveState
+#undef tData7
+#undef tData8
+#undef tEvoWasStopped
+#undef tPartyID
+
+static void EvoDummyFunc(void)
+{
+}
+
+static void VBlankCB_EvolutionScene(void)
+{
+    SetGpuReg(REG_OFFSET_BG0HOFS, gBattle_BG0_X);
+    SetGpuReg(REG_OFFSET_BG0VOFS, gBattle_BG0_Y);
+    SetGpuReg(REG_OFFSET_BG1HOFS, gBattle_BG1_X);
+    SetGpuReg(REG_OFFSET_BG1VOFS, gBattle_BG1_Y);
+    SetGpuReg(REG_OFFSET_BG2HOFS, gBattle_BG2_X);
+    SetGpuReg(REG_OFFSET_BG2VOFS, gBattle_BG2_Y);
+    SetGpuReg(REG_OFFSET_BG3HOFS, gBattle_BG3_X);
+    SetGpuReg(REG_OFFSET_BG3VOFS, gBattle_BG3_Y);
+
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    TransferPlttBuffer();
+    sub_80BA0A8();
+}
+
+static void VBlankCB_TradeEvolutionScene(void)
+{
+    SetGpuReg(REG_OFFSET_BG0HOFS, gBattle_BG0_X);
+    SetGpuReg(REG_OFFSET_BG0VOFS, gBattle_BG0_Y);
+    SetGpuReg(REG_OFFSET_BG1HOFS, gBattle_BG1_X);
+    SetGpuReg(REG_OFFSET_BG1VOFS, gBattle_BG1_Y);
+    SetGpuReg(REG_OFFSET_BG2HOFS, gBattle_BG2_X);
+    SetGpuReg(REG_OFFSET_BG2VOFS, gBattle_BG2_Y);
+    SetGpuReg(REG_OFFSET_BG3HOFS, gBattle_BG3_X);
+    SetGpuReg(REG_OFFSET_BG3VOFS, gBattle_BG3_Y);
+
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    TransferPlttBuffer();
+    sub_80BA0A8();
+}
+
+static void sub_813FDEC(u8 taskId)
+{
+    s16 *data = gTasks[taskId].data;
+
+    if (data[6] != 0)
+        return;
+    if (data[5]++ < 20)
+        return;
+
+    if (data[0]++ > gUnknown_085B58C9[data[2]][3])
+    {
+        if (gUnknown_085B58C9[data[2]][1] == data[1])
+        {
+            data[3]++;
+            if (data[3] == gUnknown_085B58C9[data[2]][2])
+            {
+                data[3] = 0;
+                data[2]++;
+            }
+            data[1] = gUnknown_085B58C9[data[2]][0];
+        }
+        else
+        {
+            LoadPalette(&sEvoMovingBgPtr[data[1] * 16], 0xA0, 0x20);
+            data[0] = 0;
+            data[1]++;
+        }
+    }
+
+    if (data[2] == 4)
+        DestroyTask(taskId);
+}
+
+static void sub_813FEA4(bool8 isLink)
+{
+    u8 taskId = CreateTask(sub_813FEE8, 7);
+
+    if (!isLink)
+        gTasks[taskId].data[2] = 0;
+    else
+        gTasks[taskId].data[2] = 1;
+}
+
+static void sub_813FEE8(u8 taskId)
+{
+    u16 *outer_X, *outer_Y;
+
+    u16 *inner_X = &gBattle_BG1_X;
+    u16 *inner_Y = &gBattle_BG1_Y;
+
+    if (!gTasks[taskId].data[2])
+    {
+        outer_X = &gBattle_BG2_X;
+        outer_Y = &gBattle_BG2_Y;
+    }
+    else
+    {
+        outer_X = &gBattle_BG3_X;
+        outer_Y = &gBattle_BG3_Y;
+    }
+
+    gTasks[taskId].data[0] = (gTasks[taskId].data[0] + 5) & 0xFF;
+    gTasks[taskId].data[1] = (gTasks[taskId].data[0] + 0x80) & 0xFF;
+
+    *inner_X = Cos(gTasks[taskId].data[0], 4) + 8;
+    *inner_Y = Sin(gTasks[taskId].data[0], 4) + 16;
+
+    *outer_X = Cos(gTasks[taskId].data[1], 4) + 8;
+    *outer_Y = Sin(gTasks[taskId].data[1], 4) + 16;
+
+    if (!FuncIsActiveTask(sub_813FDEC))
+    {
+        DestroyTask(taskId);
+
+        *inner_X = 0;
+        *inner_Y = 0;
+
+        *outer_X = 256;
+        *outer_Y = 0;
+    }
+}
+
+static void InitMovingBgValues(u16 *movingBgs)
+{
+    s32 i, j;
+
+    for (i = 0; i < 50; i++)
+    {
+        for (j = 0; j < 16; j++)
+        {
+            movingBgs[i * 16 + j] = gUnknown_085B5884[gUnknown_085B58D9[i * 16 + j]];
+        }
+    }
+}
+
+static void InitMovingBackgroundTask(bool8 isLink)
+{
+    u8 innerBgId, outerBgId;
+
+    sEvoMovingBgPtr = AllocZeroed(0x640);
+    InitMovingBgValues(sEvoMovingBgPtr);
+
+    if (!isLink)
+        innerBgId = 1, outerBgId = 2;
+    else
+        innerBgId = 1, outerBgId = 3;
+
+    LoadPalette(gUnknown_085B51E4, 0xA0, 0x20);
+
+    copy_decompressed_tile_data_to_vram_autofree(1, gUnknown_085B4134, FALSE, 0, 0);
+    CopyToBgTilemapBuffer(1, gUnknown_085B482C, 0, 0);
+    CopyToBgTilemapBuffer(outerBgId, gUnknown_085B4D10, 0, 0);
+    CopyBgTilemapBufferToVram(1);
+    CopyBgTilemapBufferToVram(outerBgId);
+
+    if (!isLink)
+    {
+        SetGpuReg(REG_OFFSET_BLDCNT, 0x442);
+        SetGpuReg(REG_OFFSET_BLDALPHA, 0x808);
+        SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_OBJ_ON | DISPCNT_BG2_ON | DISPCNT_BG1_ON | DISPCNT_BG0_ON | DISPCNT_OBJ_1D_MAP);
+
+        SetBgAttribute(innerBgId, BG_CTRL_ATTR_MOSAIC, 2);
+        SetBgAttribute(outerBgId, BG_CTRL_ATTR_MOSAIC, 2);
+
+        ShowBg(1);
+        ShowBg(2);
+    }
+    else
+    {
+        SetGpuReg(REG_OFFSET_BLDCNT, 0x842);
+        SetGpuReg(REG_OFFSET_BLDALPHA, 0x808);
+        SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_OBJ_ON | DISPCNT_BG3_ON | DISPCNT_BG1_ON | DISPCNT_BG0_ON | DISPCNT_OBJ_1D_MAP);
+    }
+
+    CreateTask(sub_813FDEC, 5);
+    sub_813FEA4(isLink);
+}
+
+static void sub_8140100(void) // unused
+{
+    u8 taskId = FindTaskIdByFunc(sub_813FDEC);
+
+    if (taskId != 0xFF)
+        gTasks[taskId].data[6] = 1;
+
+    FillPalette(0, 0xA0, 0x20);
+}
+
+static void sub_8140134(void)
+{
+    u8 taskId;
+
+    if ((taskId = FindTaskIdByFunc(sub_813FDEC)) != 0xFF)
+        DestroyTask(taskId);
+    if ((taskId = FindTaskIdByFunc(sub_813FEE8)) != 0xFF)
+        DestroyTask(taskId);
+
+    FillPalette(0, 0xA0, 0x20);
+    sub_8140174();
+}
+
+static void sub_8140174(void)
+{
+    SetGpuReg(REG_OFFSET_BLDCNT, 0);
+    gBattle_BG1_X = 0;
+    gBattle_BG1_Y = 0;
+    gBattle_BG2_X = 0;
+    SetBgAttribute(1, BG_CTRL_ATTR_MOSAIC, sub_80391E0(1, 5));
+    SetBgAttribute(2, BG_CTRL_ATTR_MOSAIC, sub_80391E0(2, 5));
+    SetGpuReg(REG_OFFSET_DISPCNT, DISPCNT_OBJ_ON | DISPCNT_BG3_ON | DISPCNT_BG0_ON | DISPCNT_OBJ_1D_MAP);
+    Free(sEvoMovingBgPtr);
+}
+
+static void EvoScene_DoMonAnimation(u8 monSpriteId, u16 speciesId)
+{
+    DoMonFrontSpriteAnimation(&gSprites[monSpriteId], speciesId, FALSE, 0);
+}
+
+static bool32 EvoScene_IsMonAnimFinished(u8 monSpriteId)
+{
+    if (gSprites[monSpriteId].callback == SpriteCallbackDummy)
+        return TRUE;
+
+    return FALSE;
+}
diff --git a/src/pokemon_3.c b/src/pokemon_3.c
index 73d23fe6f..27da8b18e 100644
--- a/src/pokemon_3.c
+++ b/src/pokemon_3.c
@@ -1267,10 +1267,10 @@ const struct CompressedSpritePalette *sub_806E794(struct Pokemon *mon)
     u16 species = GetMonData(mon, MON_DATA_SPECIES2, 0);
     u32 otId = GetMonData(mon, MON_DATA_OT_ID, 0);
     u32 personality = GetMonData(mon, MON_DATA_PERSONALITY, 0);
-    return sub_806E7CC(species, otId, personality);
+    return GetMonSpritePalStructFromOtIdPersonality(species, otId, personality);
 }
 
-const struct CompressedSpritePalette *sub_806E7CC(u16 species, u32 otId , u32 personality)
+const struct CompressedSpritePalette *GetMonSpritePalStructFromOtIdPersonality(u16 species, u32 otId , u32 personality)
 {
     u32 shinyValue;