62 lines
1.4 KiB
C++
62 lines
1.4 KiB
C++
#ifndef ISTD_TILEMAP_CHUNK_H
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#define ISTD_TILEMAP_CHUNK_H
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#include "tile.h"
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#include <cstdint>
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namespace istd {
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// Forward declaration
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enum class BiomeType : std::uint8_t;
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// Position within a chunk's sub-chunk grid
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struct SubChunkPos {
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std::uint8_t sub_x;
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std::uint8_t sub_y;
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constexpr SubChunkPos(std::uint8_t x, std::uint8_t y): sub_x(x), sub_y(y) {}
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};
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// Represents the position of a tile in the map, using chunk and local
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// coordinates
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struct TilePos {
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uint8_t chunk_x;
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uint8_t chunk_y;
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uint8_t local_x;
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uint8_t local_y;
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};
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struct Chunk {
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// Size of a chunk in tiles (64 x 64)
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static constexpr uint8_t size = 64;
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// Sub-chunk size in tiles
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static constexpr uint8_t subchunk_size = 4;
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// Number of sub-chunks in each dimension
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static constexpr uint8_t subchunk_count = size / subchunk_size;
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// array of tile types
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Tile tiles[size][size];
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// array of biomes for sub-chunks
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BiomeType biome[subchunk_count][subchunk_count];
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// Get biome for a specific sub-chunk position
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BiomeType &get_biome(const SubChunkPos &pos) {
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return biome[pos.sub_x][pos.sub_y];
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}
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// Get biome for a specific sub-chunk position (const version)
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const BiomeType &get_biome(const SubChunkPos &pos) const {
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return biome[pos.sub_x][pos.sub_y];
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}
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};
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// Get the starting tile coordinates for a sub-chunk
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std::pair<std::uint8_t, std::uint8_t> subchunk_to_tile_start(
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const SubChunkPos &pos
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);
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} // namespace istd
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#endif |