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refactor Rom class and constants

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scawful
2024-08-04 21:04:26 -04:00
parent 988f89a9cc
commit 6afa707d14
4 changed files with 39 additions and 81 deletions
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28
src/app/gfx/snes_tile.cc
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@@ -9,6 +9,18 @@ namespace yaze {
namespace app {
namespace gfx {
// Bit set for object priority
constexpr ushort TilePriorityBit = 0x2000;
// Bit set for object hflip
constexpr ushort TileHFlipBit = 0x4000;
// Bit set for object vflip
constexpr ushort TileVFlipBit = 0x8000;
// Bits used for tile name
constexpr ushort TileNameMask = 0x03FF;
tile8 UnpackBppTile(const Bytes& data, const uint32_t offset,
const uint32_t bpp) {
tile8 tile;
@@ -337,28 +349,28 @@ uint16_t TileInfoToShort(TileInfo tile_info) {
uint16_t value = 0;
// vhopppcc cccccccc
if (tile_info.over_) {
value |= core::TilePriorityBit;
value |= TilePriorityBit;
}
if (tile_info.horizontal_mirror_) {
value |= core::TileHFlipBit;
value |= TileHFlipBit;
}
if (tile_info.vertical_mirror_) {
value |= core::TileVFlipBit;
value |= TileVFlipBit;
}
value |= (uint16_t)((tile_info.palette_ << 10) & 0x1C00);
value |= (uint16_t)(tile_info.id_ & core::TileNameMask);
value |= (uint16_t)(tile_info.id_ & TileNameMask);
return value;
}
TileInfo GetTilesInfo(uint16_t tile) {
// vhopppcc cccccccc
uint16_t tid = (uint16_t)(tile & core::TileNameMask);
uint16_t tid = (uint16_t)(tile & TileNameMask);
uint8_t p = (uint8_t)((tile >> 10) & 0x07);
bool o = ((tile & core::TilePriorityBit) == core::TilePriorityBit);
bool h = ((tile & core::TileHFlipBit) == core::TileHFlipBit);
bool v = ((tile & core::TileVFlipBit) == core::TileVFlipBit);
bool o = ((tile & TilePriorityBit) == TilePriorityBit);
bool h = ((tile & TileHFlipBit) == TileHFlipBit);
bool v = ((tile & TileVFlipBit) == TileVFlipBit);
return TileInfo(tid, p, v, h, o);
}