diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/field_effect.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/src/field_effect.c b/src/field_effect.c new file mode 100644 index 000000000..97301ab50 --- /dev/null +++ b/src/field_effect.c @@ -0,0 +1,218 @@ +#include "global.h" +#include "sprite.h" + +typedef bool8 (*FldEffCmd)(u8 **, u32 *); + +static u8 sActiveList[32]; + +extern u8 *gFieldEffectScriptPointers[]; + +extern FldEffCmd gFieldEffectScriptFuncs[]; + +void FieldEffectScript_LoadTiles(u8 **script); +void FieldEffectScript_LoadFadedPalette(u8 **script); +void FieldEffectScript_LoadPalette(u8 **script); +void FieldEffectScript_CallNative(u8 **script, u32 *val); +void FieldEffectFreeGraphicsResources(struct Sprite *sprite); +void FieldEffectStop(struct Sprite *sprite, u8 id); +void FieldEffectFreeTilesIfUnused(u16 tileStart); +void FieldEffectFreePaletteIfUnused(u8 paletteNum); +void FieldEffectActiveListClear(void); +void FieldEffectActiveListAdd(u8 id); +void FieldEffectActiveListRemove(u8 id); + +u32 FieldEffectStart(u8 id) +{ + u8 *script; + u32 val; + + FieldEffectActiveListAdd(id); + + script = gFieldEffectScriptPointers[id]; + + while (gFieldEffectScriptFuncs[*script](&script, &val)) + ; + + return val; +} + +bool8 FieldEffectCmd_loadtiles(u8 **script, u32 *val) +{ + (*script)++; + FieldEffectScript_LoadTiles(script); + return TRUE; +} + +bool8 FieldEffectCmd_loadfadedpal(u8 **script, u32 *val) +{ + (*script)++; + FieldEffectScript_LoadFadedPalette(script); + return TRUE; +} + +bool8 FieldEffectCmd_loadpal(u8 **script, u32 *val) +{ + (*script)++; + FieldEffectScript_LoadPalette(script); + return TRUE; +} + +bool8 FieldEffectCmd_callnative(u8 **script, u32 *val) +{ + (*script)++; + FieldEffectScript_CallNative(script, val); + return TRUE; +} + +bool8 FieldEffectCmd_end(u8 **script, u32 *val) +{ + return FALSE; +} + +bool8 FieldEffectCmd_loadgfx_callnative(u8 **script, u32 *val) +{ + (*script)++; + FieldEffectScript_LoadTiles(script); + FieldEffectScript_LoadFadedPalette(script); + FieldEffectScript_CallNative(script, val); + return TRUE; +} + +bool8 FieldEffectCmd_loadtiles_callnative(u8 **script, u32 *val) +{ + (*script)++; + FieldEffectScript_LoadTiles(script); + FieldEffectScript_CallNative(script, val); + return TRUE; +} + +bool8 FieldEffectCmd_loadfadedpal_callnative(u8 **script, u32 *val) +{ + (*script)++; + FieldEffectScript_LoadFadedPalette(script); + FieldEffectScript_CallNative(script, val); + return TRUE; +} + +u32 FieldEffectScript_ReadWord(u8 **script) +{ + return (*script)[0] + + ((*script)[1] << 8) + + ((*script)[2] << 16) + + ((*script)[3] << 24); +} + +void FieldEffectScript_LoadTiles(u8 **script) +{ + struct SpriteSheet *sheet = (struct SpriteSheet *)FieldEffectScript_ReadWord(script); + if (GetSpriteTileStartByTag(sheet->tag) == 0xFFFF) + LoadSpriteSheet(sheet); + (*script) += 4; +} + +void FieldEffectScript_LoadFadedPalette(u8 **script) +{ + struct SpritePalette *palette = (struct SpritePalette *)FieldEffectScript_ReadWord(script); + LoadSpritePalette(palette); + sub_807D78C(IndexOfSpritePaletteTag(palette->tag)); + (*script) += 4; +} + +void FieldEffectScript_LoadPalette(u8 **script) +{ + struct SpritePalette *palette = (struct SpritePalette *)FieldEffectScript_ReadWord(script); + LoadSpritePalette(palette); + (*script) += 4; +} + +void FieldEffectScript_CallNative(u8 **script, u32 *val) +{ + u32 (*func)(void) = (u32 (*)(void))FieldEffectScript_ReadWord(script); + *val = func(); + (*script) += 4; +} + +void FieldEffectFreeGraphicsResources(struct Sprite *sprite) +{ + u16 sheetTileStart = sprite->sheetTileStart; + u32 paletteNum = sprite->oam.paletteNum; + DestroySprite(sprite); + FieldEffectFreeTilesIfUnused(sheetTileStart); + FieldEffectFreePaletteIfUnused(paletteNum); +} + +void FieldEffectStop(struct Sprite *sprite, u8 id) +{ + FieldEffectFreeGraphicsResources(sprite); + FieldEffectActiveListRemove(id); +} + +void FieldEffectFreeTilesIfUnused(u16 tileStart) +{ + u8 i; + u16 tag = GetSpriteTileTagByTileStart(tileStart); + + if (tag != 0xFFFF) + { + for (i = 0; i < MAX_SPRITES; i++) + if (gSprites[i].inUse && gSprites[i].usingSheet && tileStart == gSprites[i].sheetTileStart) + return; + FreeSpriteTilesByTag(tag); + } +} + +void FieldEffectFreePaletteIfUnused(u8 paletteNum) +{ + u8 i; + u16 tag = GetSpritePaletteTagByPaletteNum(paletteNum); + + if (tag != 0xFFFF) + { + for (i = 0; i < MAX_SPRITES; i++) + if (gSprites[i].inUse && gSprites[i].oam.paletteNum == paletteNum) + return; + FreeSpritePaletteByTag(tag); + } +} + +void FieldEffectActiveListClear(void) +{ + u8 i; + for (i = 0; i < ARRAY_COUNT(sActiveList); i++) + sActiveList[i] = 0xFF; +} + +void FieldEffectActiveListAdd(u8 id) +{ + u8 i; + for (i = 0; i < ARRAY_COUNT(sActiveList); i++) + { + if (sActiveList[i] == 0xFF) + { + sActiveList[i] = id; + return; + } + } +} + +void FieldEffectActiveListRemove(u8 id) +{ + u8 i; + for (i = 0; i < ARRAY_COUNT(sActiveList); i++) + { + if (sActiveList[i] == id) + { + sActiveList[i] = 0xFF; + return; + } + } +} + +bool8 FieldEffectActiveListContains(u8 id) +{ + u8 i; + for (i = 0; i < ARRAY_COUNT(sActiveList); i++) + if (sActiveList[i] == id) + return TRUE; + return FALSE; +} |