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#include "global.h"
#include "utils.h"
#include "structures.h"
#include "screen.h"
static void StoreKeyInput(Input* input, u32 keyInput);
typedef struct {
u16 paletteId;
u8 destPaletteNum;
u8 numPalettes;
} PaletteGroup;
typedef struct {
union {
int raw;
struct {
u8 filler0[0x3];
u8 unk3;
} bytes;
} unk0;
u32 dest;
u32 unk8;
} GfxItem;
extern const PaletteGroup* gPaletteGroups[];
extern const u8 gGlobalGfxAndPalettes[];
extern u32 gUsedPalettes;
extern u16 gPaletteBuffer[];
extern const GfxItem* gUnk_08100AA8[];
void MemFill16(u32 value, void* dest, u32 size) {
DmaFill16(3, value, dest, size);
}
void MemFill32(u32 value, void* dest, u32 size) {
DmaFill32(3, value, dest, size);
}
void MemClear(void* dest, u32 size) {
u32 zero = 0;
switch (((u32)dest | size) & 3) {
case 0:
MemFill32(0, dest, size);
break;
case 2:
MemFill16(0, dest, size);
break;
default:
do {
*(u8*)dest = zero;
dest++;
size--;
} while (size != 0);
}
}
void MemCopy(const void* src, void* dest, u32 size) {
switch (((u32)src | (u32)dest | size) & 3) {
case 0:
DmaCopy32(3, src, dest, size);
break;
case 2:
DmaCopy16(3, src, dest, size);
break;
default:
do {
*(u8*)dest = *(u8*)src;
src++;
dest++;
} while (--size);
}
}
void ReadKeyInput(void) {
u32 keyInput = ~REG_KEYINPUT & KEYS_MASK;
StoreKeyInput(&gInput, keyInput);
}
static void StoreKeyInput(Input* input, u32 keyInput) {
u32 heldKeys = input->heldKeys;
u32 difference = keyInput & ~heldKeys;
input->newKeys = difference;
if (keyInput == heldKeys) {
if (--input->unk7 == 0) {
input->unk7 = 4;
input->unk4 = keyInput;
} else {
input->unk4 = 0;
}
} else {
input->unk7 = 0x14;
input->unk4 = difference;
}
input->heldKeys = keyInput;
}
void LoadPaletteGroup(u32 group) {
const PaletteGroup* paletteGroup = gPaletteGroups[group];
while (1) {
u32 destPaletteNum = paletteGroup->destPaletteNum;
u32 numPalettes = paletteGroup->numPalettes & 0xF;
if (numPalettes == 0) {
numPalettes = 16;
}
LoadPalettes(&gGlobalGfxAndPalettes[paletteGroup->paletteId * 32], destPaletteNum, numPalettes);
if ((paletteGroup->numPalettes & 0x80) == 0) {
break;
}
paletteGroup++;
}
}
void LoadPalettes(const u8* src, int destPaletteNum, int numPalettes) {
u16* dest;
u32 size = numPalettes * 32;
u32 usedPalettesMask = 1 << destPaletteNum;
while (--numPalettes > 0) {
usedPalettesMask |= (usedPalettesMask << 1);
}
gUsedPalettes |= usedPalettesMask;
dest = &gPaletteBuffer[destPaletteNum * 16];
DmaCopy32(3, src, dest, size);
}
void sub_0801D79C(u32 colorIndex, u32 color) {
gPaletteBuffer[colorIndex] = color;
gUsedPalettes |= 1 << (colorIndex / 16);
}
void sub_0801D7BC(u32 color, u32 arg1) {
if (arg1) {
gScreen.lcd.unk6 = 0xE0FF;
} else {
gScreen.lcd.unk6 = 0xFFFF;
}
sub_0801D79C(0, color);
}
void LoadGfxGroup(u32 group) {
u32 terminator;
u32 dmaCtrl;
int gfxOffset;
const u8* src;
u32 dest;
int size;
const GfxItem* gfxItem = gUnk_08100AA8[group];
while (1) {
u32 loadGfx = FALSE;
u32 ctrl = gfxItem->unk0.bytes.unk3;
ctrl &= 0xF;
switch (ctrl) {
case 0x7:
loadGfx = TRUE;
break;
case 0xD:
return;
case 0xE:
if (gUnk_02000000->gameLanguage != 0 && gUnk_02000000->gameLanguage != 1) {
loadGfx = TRUE;
}
break;
case 0xF:
if (gUnk_02000000->gameLanguage != 0) {
loadGfx = TRUE;
}
break;
default:
if (ctrl == gUnk_02000000->gameLanguage) {
loadGfx = TRUE;
}
break;
}
if (loadGfx) {
gfxOffset = gfxItem->unk0.raw & 0xFFFFFF;
src = &gGlobalGfxAndPalettes[gfxOffset];
dest = gfxItem->dest;
size = gfxItem->unk8;
dmaCtrl = 0x80000000;
if (size < 0) {
if (dest >= VRAM) {
LZ77UnCompVram(src, (void*)dest);
} else {
LZ77UnCompWram(src, (void*)dest);
}
} else {
DmaSet(3, src, dest, dmaCtrl | ((u32)size >> 1));
}
}
terminator = gfxItem->unk0.bytes.unk3;
terminator &= 0x80;
gfxItem++;
if (!terminator) {
break;
}
}
}
/* TODO:
clear OAM, zMalloc, etc.
*/
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