drinkingtea/nostalgia
drinkingtea/nostalgia
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[nostalgia/core] Add tileColumns and tileRows functions

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This commit is contained in:
Gary Talent 2024-05-22 00:28:08 -05:00
parent f6a0ae2027
commit 76771e7bdd
3 changed files with 20 additions and 5 deletions
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6
src/nostalgia/modules/core/include/nostalgia/core/gfx.hpp
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@ -103,6 +103,12 @@ oxModelEnd()
void addEntry(TileSheetSet &set, ox::FileAddress path, int32_t begin = 0, int32_t size = -1) noexcept;
[[nodiscard]]
int tileColumns(Context&) noexcept;
[[nodiscard]]
int tileRows(Context&) noexcept;
ox::Error loadBgPalette(
Context &ctx,
size_t palBank,

8
src/nostalgia/modules/core/src/gba/gfx.cpp
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@ -22,8 +22,6 @@
namespace nostalgia::core {
constexpr auto GbaTileColumns = 32;
constexpr auto GbaTileRows = 32;
constexpr auto SpriteCount = 128;
struct GbaTileMapTarget {
@ -285,7 +283,7 @@ ox::Error loadSpriteTileSheet(
}
void setBgTile(Context&, uint_t bgIdx, int column, int row, BgTile const&tile) noexcept {
auto const tileIdx = static_cast<std::size_t>(row * GbaTileColumns + column);
auto const tileIdx = static_cast<std::size_t>(row * tileColumns() + column);
// see Tonc 9.3
MEM_BG_MAP[bgIdx][tileIdx] =
static_cast<uint16_t>(tile.tileIdx & 0b1'1111'1111) |
@ -294,8 +292,8 @@ void setBgTile(Context&, uint_t bgIdx, int column, int row, BgTile const&tile) n
static_cast<uint16_t>(tile.palBank << 0xc);
}
void clearBg(Context&, uint_t bgIdx) noexcept {
memset(MEM_BG_MAP[bgIdx].data(), 0, GbaTileRows * GbaTileColumns);
void clearBg(Context &ctx, uint_t bgIdx) noexcept {
memset(MEM_BG_MAP[bgIdx].data(), 0, static_cast<size_t>(tileRows(ctx) * tileColumns(ctx)));
}
uint8_t bgStatus(Context&) noexcept {

11
src/nostalgia/modules/core/src/gfx.cpp
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@ -6,6 +6,17 @@
namespace nostalgia::core {
constexpr auto GbaTileColumns = 32;
constexpr auto GbaTileRows = 32;
int tileColumns(Context&) noexcept {
return GbaTileColumns;
}
int tileRows(Context&) noexcept {
return GbaTileRows;
}
// map ASCII values to the nostalgia charset
constexpr ox::Array<char, 128> charMap = {
0,