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packed chunk data

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This commit is contained in:
Simon Pribylski
2025-07-31 19:03:41 +02:00
parent 1a455a3d6b
commit fa663d0481
5 changed files with 51 additions and 104 deletions
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31
include/td/game/WorldTypes.h
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@@ -65,7 +65,7 @@ using AllTiles = std::tuple<EmptyTile, TowerTile, WalkableTile, DecorationTile>;
using TileFactory = sp::MessageFactory<Tile, AllTiles>;
class TileHandler : public sp::GenericHandler<AllTiles>{};
class TileHandler : public sp::GenericHandler<AllTiles> {};
using TilePtr = std::shared_ptr<sp::SerializableMessage<TileFactory>>;
@@ -79,35 +79,14 @@ typedef std::uint32_t TileIndex;
// 32 x 32 area
struct Chunk {
enum { ChunkWidth = 32, ChunkHeight = 32, ChunkSize = ChunkWidth * ChunkHeight };
typedef std::array<std::uint16_t, ChunkSize> ChunkData;
using ChunkData = std::array<std::uint16_t, ChunkSize>;
using ChunkPackedData = std::vector<uint64_t>;
// stores index of tile palette
ChunkData m_Tiles{0};
ChunkPalette m_Palette;
ChunkPackedData m_Data;
TileIndex GetTileIndex(std::uint16_t tileNumber) const {
TileIndex chunkPaletteIndex = m_Tiles.at(tileNumber);
if (chunkPaletteIndex == 0) // index 0 means empty tile index 1 = first tile
return 0;
return m_Palette.at(chunkPaletteIndex);
}
// TODO: keep data packed
/*
std::size_t startLong = static_cast<std::size_t>((tileNumber * bitsPerTile) / BITS_IN_LONG);
std::size_t startOffset = static_cast<std::size_t>((tileNumber * bitsPerTile) % BITS_IN_LONG);
std::size_t endLong = static_cast<std::size_t>(((tileNumber + 1) * bitsPerTile - 1) / BITS_IN_LONG);
std::uint64_t value = static_cast<std::uint64_t>(a_Chunk->m_Tiles[tileNumber]);
value &= individualValueMask;
chunkData[startLong] |= (value << startOffset);
if (startLong != endLong) {
chunkData[endLong] = (value >> (BITS_IN_LONG - startOffset));
}
*/
TileIndex GetTileIndex(std::uint16_t tileNumber) const;
};
typedef std::shared_ptr<Chunk> ChunkPtr;