Merge pull request #258 from DizzyEggg/decompile_rom_8034C54

Decompile rom 8034c54

3 files changed, 456 insertions, 8 deletions

diff --git a/src/berry_blender.c b/src/berry_blender.c
index c3b0cc80d..df4920570 100644
--- a/src/berry_blender.c
+++ b/src/berry_blender.c
@@ -818,7 +818,7 @@ static bool8 LoadBerryBlenderGfx(void)
     switch (sBerryBlenderData->loadGfxState)
     {
     case 0:
-        sBerryBlenderData->tilesBuffer = AllocZeroed(sub_8034974(sBlenderCenterGfx) + 100);
+        sBerryBlenderData->tilesBuffer = AllocZeroed(GetDecompressedDataSize(sBlenderCenterGfx) + 100);
         LZDecompressWram(sBlenderCenterGfx, sBerryBlenderData->tilesBuffer);
         sBerryBlenderData->loadGfxState++;
         break;
@@ -829,7 +829,7 @@ static bool8 LoadBerryBlenderGfx(void)
         sBerryBlenderData->loadGfxState++;
         break;
     case 2:
-        LoadBgTiles(2, sBerryBlenderData->tilesBuffer, sub_8034974(sBlenderCenterGfx), 0);
+        LoadBgTiles(2, sBerryBlenderData->tilesBuffer, GetDecompressedDataSize(sBlenderCenterGfx), 0);
         sBerryBlenderData->loadGfxState++;
         break;
     case 3:
@@ -837,7 +837,7 @@ static bool8 LoadBerryBlenderGfx(void)
         sBerryBlenderData->loadGfxState++;
         break;
     case 4:
-        LoadBgTiles(1, sBerryBlenderData->tilesBuffer, sub_8034974(gUnknown_08D91DB8), 0);
+        LoadBgTiles(1, sBerryBlenderData->tilesBuffer, GetDecompressedDataSize(gUnknown_08D91DB8), 0);
         sBerryBlenderData->loadGfxState++;
         break;
     case 5:
@@ -845,7 +845,7 @@ static bool8 LoadBerryBlenderGfx(void)
         sBerryBlenderData->loadGfxState++;
         break;
     case 6:
-        CopyToBgTilemapBuffer(1, sBerryBlenderData->tilesBuffer, sub_8034974(gUnknown_08D927EC), 0);
+        CopyToBgTilemapBuffer(1, sBerryBlenderData->tilesBuffer, GetDecompressedDataSize(gUnknown_08D927EC), 0);
         CopyBgTilemapBufferToVram(1);
         sBerryBlenderData->loadGfxState++;
         break;
diff --git a/src/decompress.c b/src/decompress.c
index 1d4165d75..83a9db0b6 100644
--- a/src/decompress.c
+++ b/src/decompress.c
@@ -459,7 +459,7 @@ _08034964:\n\
         .syntax divided");
 }
 
-u32 sub_8034974(const u8 *ptr)
+u32 GetDecompressedDataSize(const u8 *ptr)
 {
     return (ptr[3] << 16) | (ptr[2] << 8) | (ptr[1]);
 }
diff --git a/src/rom_8034C54.c b/src/rom_8034C54.c
index 4d4492524..42df51295 100644
--- a/src/rom_8034C54.c
+++ b/src/rom_8034C54.c
@@ -1,5 +1,453 @@
 #include "global.h"
+#include "rom_8034C54.h"
+#include "malloc.h"
+#include "decompress.h"
+#include "main.h"
 
-IWRAM_DATA u32 gUnknown_03000DD4;
-IWRAM_DATA u32 gUnknown_03000DD8;
-IWRAM_DATA u32 gUnknown_03000DDC;
+struct UnkStruct2
+{
+    bool8 isActive;
+    u8 firstOamId;
+    u8 field_2;
+    u8 oamCount;
+    u8 palTagIndex;
+    u8 size;
+    u8 shape;
+    u8 priority;
+    u8 xDelta;
+    u8 field_9;
+    u16 tileStart;
+    s16 x;
+    s16 y;
+    u16 tileTag;
+    u16 palTag;
+    u32 field_14;
+    s32 field_18;
+};
+
+struct UnkStruct1
+{
+    u32 count;
+    struct UnkStruct2 *array;
+};
+
+extern struct UnkStruct1 *gUnknown_02022E10;
+
+extern const struct SpriteTemplate gUnknown_0831AC88;
+
+// this file's functions
+static u8 sub_8035518(u8 arg0);;
+static void sub_8034EFC(struct UnkStruct2 *arg0);
+static void sub_80350B0(struct UnkStruct2 *arg0, s32 arg1, bool32 arg2);
+static void sub_8035164(struct UnkStruct2 *arg0, s32 arg1, bool32 arg2);
+static void sub_80352C0(struct UnkStruct2 *arg0, s32 arg1, bool32 arg2);
+static bool32 SharesTileWithAnyActive(u32 id);
+static bool32 SharesPalWithAnyActive(u32 id);
+static void sub_8035648(void);
+
+// iwram
+static IWRAM_DATA s32 gUnknown_03000DD4;
+static IWRAM_DATA s32 gUnknown_03000DD8;
+static IWRAM_DATA s32 gUnknown_03000DDC;
+
+// const rom data
+static const u8 gUnknown_082FF1C8[][4] =
+{
+    {0x01, 0x04, 0x10, 0x40},
+    {0x02, 0x04, 0x08, 0x20},
+    {0x02, 0x04, 0x08, 0x20},
+    {0x00, 0x00, 0x00, 0x00}
+};
+
+// code
+bool32 sub_8034C54(u32 count)
+{
+    u32 i;
+
+    if (gUnknown_02022E10 != NULL)
+        sub_8034CC8();
+
+    gUnknown_02022E10 = Alloc(sizeof(*gUnknown_02022E10));
+    if (gUnknown_02022E10 == NULL)
+        return FALSE;
+
+    gUnknown_02022E10->array = Alloc(sizeof(struct UnkStruct2) * count);
+    if (gUnknown_02022E10->array == NULL)
+    {
+        Free(gUnknown_02022E10);
+        return FALSE;
+    }
+
+    gUnknown_02022E10->count = count;
+    for (i = 0; i < count; i++)
+    {
+        gUnknown_02022E10->array[i].isActive = FALSE;
+        gUnknown_02022E10->array[i].firstOamId |= 0xFF;
+    }
+
+    return TRUE;
+}
+
+void sub_8034CC8(void)
+{
+    if (gUnknown_02022E10 != NULL)
+    {
+        if (gUnknown_02022E10->array != NULL)
+        {
+            u32 i;
+
+            for (i = 0; i < gUnknown_02022E10->count; i++)
+                sub_80353DC(i);
+
+            Free(gUnknown_02022E10->array);
+        }
+
+        FREE_AND_SET_NULL(gUnknown_02022E10);
+    }
+}
+
+bool32 sub_8034D14(u32 id, s32 arg1, const struct UnkStruct3 *arg2)
+{
+    u32 i;
+
+    if (gUnknown_02022E10 == NULL)
+        return FALSE;
+    if (gUnknown_02022E10->array[id].isActive)
+        return FALSE;
+
+    gUnknown_02022E10->array[id].firstOamId = sub_8035518(arg2->field_1);
+    if (gUnknown_02022E10->array[id].firstOamId == 0xFF)
+        return FALSE;
+
+    gUnknown_02022E10->array[id].tileStart = GetSpriteTileStartByTag(arg2->spriteSheet->tag);
+    if (gUnknown_02022E10->array[id].tileStart == 0xFFFF)
+    {
+        if (arg2->spriteSheet->size != 0)
+        {
+            gUnknown_02022E10->array[id].tileStart = LoadSpriteSheet(arg2->spriteSheet);
+        }
+        else
+        {
+            struct CompressedSpriteSheet compSpriteSheet;
+
+            compSpriteSheet = *(struct CompressedSpriteSheet*)(arg2->spriteSheet);
+            compSpriteSheet.size = GetDecompressedDataSize(arg2->spriteSheet->data);
+            gUnknown_02022E10->array[id].tileStart = LoadCompressedObjectPic(&compSpriteSheet);
+        }
+
+        if (gUnknown_02022E10->array[id].tileStart == 0xFFFF)
+            return FALSE;
+    }
+
+    gUnknown_02022E10->array[id].palTagIndex = IndexOfSpritePaletteTag(arg2->spritePal->tag);
+    if (gUnknown_02022E10->array[id].palTagIndex == 0xFF)
+        gUnknown_02022E10->array[id].palTagIndex = LoadSpritePalette(arg2->spritePal);
+
+    gUnknown_02022E10->array[id].field_2 = arg2->field_0_0;
+    gUnknown_02022E10->array[id].oamCount = arg2->field_1;
+    gUnknown_02022E10->array[id].x = arg2->x;
+    gUnknown_02022E10->array[id].y = arg2->y;
+    gUnknown_02022E10->array[id].shape = arg2->shape;
+    gUnknown_02022E10->array[id].size = arg2->size;
+    gUnknown_02022E10->array[id].priority = arg2->priority;
+    gUnknown_02022E10->array[id].xDelta = arg2->xDelta;
+    gUnknown_02022E10->array[id].field_9 = sub_80355F8(arg2->shape, arg2->size);
+    gUnknown_02022E10->array[id].tileTag = arg2->spriteSheet->tag;
+    gUnknown_02022E10->array[id].palTag = arg2->spritePal->tag;
+    gUnknown_02022E10->array[id].isActive = TRUE;
+    gUnknown_02022E10->array[id].field_14 = 1;
+
+    for (i = 1; i < arg2->field_1; i++)
+        gUnknown_02022E10->array[id].field_14 *= 10;
+
+    sub_8034EFC(&gUnknown_02022E10->array[id]);
+    sub_8035044(id, arg1);
+
+    return TRUE;
+}
+
+static void sub_8034EFC(struct UnkStruct2 *arg0)
+{
+    u32 i;
+    u32 oamId = arg0->firstOamId;
+    u32 x = arg0->x;
+    u32 oamCount = arg0->oamCount + 1;
+
+    CpuFill16(0, &gMain.oamBuffer[oamId], sizeof(struct OamData) * oamCount);
+    for (i = 0, oamId = arg0->firstOamId; i < oamCount; i++, oamId++)
+    {
+        gMain.oamBuffer[oamId].y = arg0->y;
+        gMain.oamBuffer[oamId].x = x;
+        gMain.oamBuffer[oamId].shape = arg0->shape;
+        gMain.oamBuffer[oamId].size = arg0->size;
+        gMain.oamBuffer[oamId].tileNum = arg0->tileStart;
+        gMain.oamBuffer[oamId].priority = arg0->priority;
+        gMain.oamBuffer[oamId].paletteNum = arg0->palTagIndex;
+
+        x += arg0->xDelta;
+    }
+
+    oamId--;
+    gMain.oamBuffer[oamId].x = arg0->x - arg0->xDelta;
+    gMain.oamBuffer[oamId].affineMode = 2;
+    gMain.oamBuffer[oamId].tileNum = arg0->tileStart + (arg0->field_9 * 10);
+}
+
+void sub_8035044(u32 id, s32 arg1)
+{
+    bool32 r2;
+
+    if (gUnknown_02022E10 == NULL)
+        return;
+    if (!gUnknown_02022E10->array[id].isActive)
+        return;
+
+    gUnknown_02022E10->array[id].field_18 = arg1;
+    if (arg1 < 0)
+    {
+        r2 = TRUE;
+        arg1 *= -1;
+    }
+    else
+    {
+        r2 = FALSE;
+    }
+
+    switch (gUnknown_02022E10->array[id].field_2)
+    {
+    case 0:
+    default:
+        sub_80350B0(&gUnknown_02022E10->array[id], arg1, r2);
+        break;
+    case 1:
+        sub_8035164(&gUnknown_02022E10->array[id], arg1, r2);
+        break;
+    case 2:
+        sub_80352C0(&gUnknown_02022E10->array[id], arg1, r2);
+        break;
+    }
+}
+
+static void sub_80350B0(struct UnkStruct2 *arg0, s32 arg1, bool32 arg2)
+{
+    u32 r5 = arg0->field_14;
+    u32 oamId = arg0->firstOamId;
+
+    while (r5 != 0)
+    {
+        u32 r4 = arg1 / r5;
+        arg1 -= (r4 * r5);
+        r5 /= 10;
+
+        gMain.oamBuffer[oamId].tileNum = (r4 * arg0->field_9) + arg0->tileStart;
+        oamId++;
+    }
+
+    if (arg2)
+        gMain.oamBuffer[oamId].affineMode = 0;
+    else
+        gMain.oamBuffer[oamId].affineMode = 2;
+}
+
+static void sub_8035164(struct UnkStruct2 *arg0, s32 arg1, bool32 arg2)
+{
+    u32 r5 = arg0->field_14;
+    gUnknown_03000DD4 = arg0->firstOamId;
+    gUnknown_03000DD8 = 0;
+    gUnknown_03000DDC = -1;
+
+    while (r5 != 0)
+    {
+        u32 r4 = arg1 / r5;
+        arg1 -= (r4 * r5);
+        r5 /= 10;
+
+        if (r4 != 0 || gUnknown_03000DDC != -1 || r5 == 0)
+        {
+            gMain.oamBuffer[gUnknown_03000DD4].tileNum = (r4 * arg0->field_9) + arg0->tileStart;
+            gMain.oamBuffer[gUnknown_03000DD4].affineMode = 0;
+
+            if (gUnknown_03000DDC == -1)
+                gUnknown_03000DDC = gUnknown_03000DD8;
+        }
+        else
+        {
+            gMain.oamBuffer[gUnknown_03000DD4].affineMode = 2;
+        }
+
+        gUnknown_03000DD4++;
+        gUnknown_03000DD8++;
+    }
+
+    if (arg2)
+    {
+        gMain.oamBuffer[gUnknown_03000DD4].affineMode = 0;
+        gMain.oamBuffer[gUnknown_03000DD4].x = arg0->x + ((gUnknown_03000DDC - 1) * arg0->xDelta);
+    }
+    else
+    {
+        gMain.oamBuffer[gUnknown_03000DD4].affineMode = 2;
+    }
+}
+
+static void sub_80352C0(struct UnkStruct2 *arg0, s32 arg1, bool32 arg2)
+{
+    u32 r5 = arg0->field_14;
+    u32 oamId = arg0->firstOamId;
+    u32 var_28 = 0;
+    s32 r9 = 0;
+
+    while (r5 != 0)
+    {
+        u32 r4 = arg1 / r5;
+        arg1 -= (r4 * r5);
+        r5 /= 10;
+
+        if (r4 != 0 || var_28 != 0 || r5 == 0)
+        {
+            var_28 = 1;
+            gMain.oamBuffer[oamId].tileNum = (r4 * arg0->field_9) + arg0->tileStart;
+            gMain.oamBuffer[oamId].affineMode = 0;
+
+            oamId++;
+            r9++;
+        }
+    }
+
+    while (r9 < arg0->oamCount)
+    {
+        gMain.oamBuffer[oamId].affineMode = 2;
+        oamId++;
+        r9++;
+    }
+
+    if (arg2)
+        gMain.oamBuffer[oamId].affineMode = 0;
+    else
+        gMain.oamBuffer[oamId].affineMode = 2;
+}
+
+void sub_80353DC(u32 id)
+{
+    s32 oamId, oamCount, i;
+
+    if (gUnknown_02022E10 == NULL)
+        return;
+    if (!gUnknown_02022E10->array[id].isActive)
+        return;
+
+    oamCount = gUnknown_02022E10->array[id].oamCount + 1;
+    oamId = gUnknown_02022E10->array[id].firstOamId;
+
+    for (i = 0; i < oamCount; i++, oamId++)
+        gMain.oamBuffer[oamId].affineMode = 2;
+
+    if (!SharesTileWithAnyActive(id))
+        FreeSpriteTilesByTag(gUnknown_02022E10->array[id].tileTag);
+    if (!SharesPalWithAnyActive(id))
+        FreeSpritePaletteByTag(gUnknown_02022E10->array[id].palTag);
+
+    gUnknown_02022E10->array[id].isActive = FALSE;
+}
+
+void sub_803547C(u32 id, bool32 arg1)
+{
+    s32 oamId, oamCount, i;
+
+    if (gUnknown_02022E10 == NULL)
+        return;
+    if (!gUnknown_02022E10->array[id].isActive)
+        return;
+
+    oamCount = gUnknown_02022E10->array[id].oamCount + 1;
+    oamId = gUnknown_02022E10->array[id].firstOamId;
+    if (arg1)
+    {
+        for (i = 0; i < oamCount; i++, oamId++)
+            gMain.oamBuffer[oamId].affineMode = 2;
+    }
+    else
+    {
+        for (i = 0; i < oamCount; i++, oamId++)
+            gMain.oamBuffer[oamId].affineMode = 0;
+
+        sub_8035044(id, gUnknown_02022E10->array[id].field_18);
+    }
+}
+
+static u8 sub_8035518(u8 arg0)
+{
+    u32 i;
+    u16 oamCount = 64;
+
+    for (i = 0; i < gUnknown_02022E10->count; i++)
+    {
+        if (!gUnknown_02022E10->array[i].isActive)
+        {
+            if (gUnknown_02022E10->array[i].firstOamId != 0xFF && gUnknown_02022E10->array[i].oamCount <= arg0)
+                return gUnknown_02022E10->array[i].firstOamId;
+        }
+        else
+        {
+            oamCount += 1 + gUnknown_02022E10->array[i].oamCount;
+        }
+    }
+
+    if (oamCount + arg0 + 1 > 128)
+        return 0xFF;
+    else
+        return oamCount;
+}
+
+static bool32 SharesTileWithAnyActive(u32 id)
+{
+    u32 i;
+
+    for (i = 0; i < gUnknown_02022E10->count; i++)
+    {
+        if (gUnknown_02022E10->array[i].isActive && i != id
+            && gUnknown_02022E10->array[i].tileTag == gUnknown_02022E10->array[id].tileTag)
+        {
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+static bool32 SharesPalWithAnyActive(u32 id)
+{
+    u32 i;
+
+    for (i = 0; i < gUnknown_02022E10->count; i++)
+    {
+        if (gUnknown_02022E10->array[i].isActive && i != id
+            && gUnknown_02022E10->array[i].palTag == gUnknown_02022E10->array[id].palTag)
+        {
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+u8 sub_80355F8(u32 arg0, u32 arg1)
+{
+    return gUnknown_082FF1C8[arg0][arg1];
+}
+
+static void sub_8035608(void)
+{
+    u8 spriteId;
+
+    ResetSpriteData();
+    spriteId = CreateSprite(&gUnknown_0831AC88, 0, 0, 0);
+    gSprites[spriteId].invisible = 1;
+    SetMainCallback2(sub_8035648);
+}
+
+static void sub_8035648(void)
+{
+    AnimateSprites();
+    BuildOamBuffer();
+}