diff options
author | camthesaxman <cameronghall@cox.net> | 2017-07-07 17:24:18 -0500 |
---|---|---|
committer | camthesaxman <cameronghall@cox.net> | 2017-07-07 17:24:18 -0500 |
commit | cd37b81feec01c4139dda047f3008be4ce28ecee (patch) | |
tree | cf316cc6c56805ed7d45bace0fe1688fe4c949d7 | |
parent | bc14a02ef3b1b2923b285e163c5eca4142678504 (diff) |
util.c formatting
-rw-r--r-- | src/util.c | 105 |
1 files changed, 66 insertions, 39 deletions
diff --git a/src/util.c b/src/util.c index 36577d6d7..582b9f806 100644 --- a/src/util.c +++ b/src/util.c @@ -108,29 +108,33 @@ static const u16 gCrc16Table[] = 0xE70E, 0xF687, 0xC41C, 0xD595, 0xA12A, 0xB0A3, 0x8238, 0x93B1, 0x6B46, 0x7ACF, 0x4854, 0x59DD, 0x2D62, 0x3CEB, 0x0E70, 0x1FF9, 0xF78F, 0xE606, 0xD49D, 0xC514, 0xB1AB, 0xA022, 0x92B9, 0x8330, - 0x7BC7, 0x6A4E, 0x58D5, 0x495C, 0x3DE3, 0x2C6A, 0x1EF1, 0x0F78, + 0x7BC7, 0x6A4E, 0x58D5, 0x495C, 0x3DE3, 0x2C6A, 0x1EF1, 0x0F78, }; const u8 gMiscBlank_Gfx[] = INCBIN_U8("graphics/interface/blank.4bpp"); -u8 CreateInvisibleSpriteWithCallback(void (*callback)(struct Sprite *)) { +u8 CreateInvisibleSpriteWithCallback(void (*callback)(struct Sprite *)) +{ u8 sprite = CreateSprite(&gInvisibleSpriteTemplate, 248, 168, 14); gSprites[sprite].invisible = TRUE; gSprites[sprite].callback = callback; return sprite; } -void StoreWordInTwoHalfwords(u16 *h, u32 w) { +void StoreWordInTwoHalfwords(u16 *h, u32 w) +{ h[0] = (u16)(w); h[1] = (u16)(w >> 16); } -void LoadWordFromTwoHalfwords(u16 *h, u32 *w) { +void LoadWordFromTwoHalfwords(u16 *h, u32 *w) +{ *w = h[0] | (s16)h[1] << 16; } -void SetBgAffineStruct(struct BgAffineSrcData *src, u32 texX, u32 texY, s16 scrX, s16 scrY, s16 sx, s16 sy, u16 alpha) { +void SetBgAffineStruct(struct BgAffineSrcData *src, u32 texX, u32 texY, s16 scrX, s16 scrY, s16 sx, s16 sy, u16 alpha) +{ src->texX = texX; src->texY = texY; src->scrX = scrX; @@ -140,15 +144,11 @@ void SetBgAffineStruct(struct BgAffineSrcData *src, u32 texX, u32 texY, s16 scrX src->alpha = alpha; } -void DoBgAffineSet(struct BgAffineDstData *dest, u32 texX, u32 texY, s16 scrX, s16 scrY, s16 sx, s16 sy, u16 alpha) { +void DoBgAffineSet(struct BgAffineDstData *dest, u32 texX, u32 texY, s16 scrX, s16 scrY, s16 sx, s16 sy, u16 alpha) +{ struct BgAffineSrcData src; - SetBgAffineStruct( - &src, - texX, texY, - scrX, scrY, - sx, sy, - alpha - ); + + SetBgAffineStruct(&src, texX, texY, scrX, scrY, sx, sy, alpha); BgAffineSet(&src, dest, 1); } @@ -156,24 +156,34 @@ void DoBgAffineSet(struct BgAffineDstData *dest, u32 texX, u32 texY, s16 scrX, s // Functionally equivalent. // Only the two yflip loops don't match. -void CopySpriteTiles(u8 shape, u8 size, u8 *tiles, u16 *tilemap, u8 *output) { +void CopySpriteTiles(u8 shape, u8 size, u8 *tiles, u16 *tilemap, u8 *output) +{ u8 x, y; s8 i, j; u8 xflip[32]; u8 h = gSpriteDimensions[shape][size][1]; u8 w = gSpriteDimensions[shape][size][0]; - for (y = 0; y < h; y++) { + + for (y = 0; y < h; y++) + { int filler = 32 - w; - for (x = 0; x < w; x++) { + + for (x = 0; x < w; x++) + { int tile = (*tilemap & 0x3ff) * 32; int attr = *tilemap & 0xc00; - if (attr == 0) { + + if (attr == 0) + { void *src = tiles + tile; void *dest = output; int length = 32; DmaCopy32(3, src, dest, length); - } else if (attr == 0x800) { // yflip - for (i = 0; i < 8; i++) { + } + else if (attr == 0x800) // yflip + { + for (i = 0; i < 8; i++) + { void *src = tiles; void *dest = output; int length = 4; @@ -182,22 +192,30 @@ void CopySpriteTiles(u8 shape, u8 size, u8 *tiles, u16 *tilemap, u8 *output) { dest += i * 4; DmaCopy32(3, src, dest, length); } - } else { // xflip - for (i = 0; i < 8; i++) { - for (j = 0; j < 4; j++) { + } + else // xflip + { + for (i = 0; i < 8; i++) + { + for (j = 0; j < 4; j++) + { u8 i2 = i * 4; xflip[i2 + (3-j)] = (tiles[tile + i2 + j] & 0xf) << 4; xflip[i2 + (3-j)] |= tiles[tile + i2 + j] >> 4; } } - if (*tilemap & 0x800) { // yflip - for (i = 0; i < 8; i++) { + if (*tilemap & 0x800) // yflip + { + for (i = 0; i < 8; i++) + { void *src = xflip + (7-i) * 4; void *dest = output + i*4; int length = 4; DmaCopy32(3, src, dest, length); } - } else { + } + else + { void *src = xflip; void *dest = output; int length = 32; @@ -213,7 +231,8 @@ void CopySpriteTiles(u8 shape, u8 size, u8 *tiles, u16 *tilemap, u8 *output) { #else -__attribute__((naked)) void CopySpriteTiles(u8 shape, u8 size, u8 *tiles, u16 *tilemap, u8 *output) { +__attribute__((naked)) void CopySpriteTiles(u8 shape, u8 size, u8 *tiles, u16 *tilemap, u8 *output) +{ asm("\n" " .syntax unified\n" " push {r4-r7,lr}\n" @@ -457,39 +476,47 @@ __attribute__((naked)) void CopySpriteTiles(u8 shape, u8 size, u8 *tiles, u16 *t #endif -int CountTrailingZeroBits(u32 value) { +int CountTrailingZeroBits(u32 value) +{ u8 i; - for (i = 0; i < 32; i++) { - if ((value & 1) == 0) { + + for (i = 0; i < 32; i++) + { + if ((value & 1) == 0) value >>= 1; - } else { + else return i; - } } return 0; } -u16 CalcCRC16(u8 *data, int length) { +u16 CalcCRC16(u8 *data, int length) +{ u16 i, j; u16 crc = 0x1121; - for (i = 0; i < length; i++) { + + for (i = 0; i < length; i++) + { crc ^= data[i]; - for (j = 0; j < 8; j++) { - if (crc & 1) { + for (j = 0; j < 8; j++) + { + if (crc & 1) crc = (crc >> 1) ^ 0x8408; - } else { + else crc >>= 1; - } } } return ~crc; } -u16 CalcCRC16WithTable(u8 *data, int length) { +u16 CalcCRC16WithTable(u8 *data, int length) +{ u16 i; u16 crc = 0x1121; u8 byte; - for (i = 0; i < length; i++) { + + for (i = 0; i < length; i++) + { byte = crc >> 8; crc ^= data[i]; crc = byte ^ gCrc16Table[(u8)crc]; |