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#include "global.h"
#include "field_effect.h"
#include "weather.h"
#include "sprite.h"
typedef bool8 (*FldEffCmd)(u8 **, u32 *);
static u8 sActiveList[32];
extern u8 *gFieldEffectScriptPointers[];
extern FldEffCmd gFieldEffectScriptFuncs[];
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;
}
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