75 lines
2.2 KiB
C++
75 lines
2.2 KiB
C++
#pragma once
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#include <cstdint>
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#include "World.h"
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#include "Noise.h"
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namespace vf {
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enum class Biome : uint8_t {
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Ocean = 0,
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Beach = 1,
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Plains = 2,
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Forest = 3,
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Desert = 4,
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Mountains = 5,
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Snow = 6,
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Count
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};
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struct WorldGenParams {
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uint32_t seed = 1337u;
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int seaLevel = 26;
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int maxY = 128; // world vertical extent in blocks (multiple of chunkSize)
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float biomeFrequency = 0.0055f;
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float heightFrequency = 0.012f;
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int heightOctaves = 5;
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float caveFrequency = 0.028f;
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float caveThreshold = 0.86f;
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float oreFrequency = 0.14f;
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bool trees = true;
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bool structures = true; // deterministic trees and huts stamped per column
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};
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// Deterministic infinite terrain: biomes from low-frequency climate noise,
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// heightmap scaled per biome, 3D-noise spaghetti caves, and depth-banded ore
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// veins. Generating the same chunk twice yields identical blocks.
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class WorldGen {
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public:
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explicit WorldGen(const WorldGenParams& params = {});
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Biome biomeAt(int gx, int gz) const;
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int surfaceHeight(int gx, int gz) const;
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bool isCave(int gx, int gy, int gz) const;
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int stackChunkCount() const { return params.maxY / chunkSize; }
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// Fills exactly one chunk from its coordinate (no cross-chunk writes).
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void generateChunk(Chunk& chunk, const Vec3i& chunkCoord) const;
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// Fills the whole vertical stack for one column and plants its trees.
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void generateColumn(World& world, int columnX, int columnZ) const;
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// Stamps at most one deterministic structure (tree or hut) into a column,
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// chosen from the seed and column coordinate. Confined to the column footprint
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// so the result is independent of generation order.
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void placeStructures(World& world, int columnX, int columnZ) const;
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const WorldGenParams& settings() const { return params; }
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private:
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Biome climateBiome(int gx, int gz) const;
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Block topBlock(Biome biome, int height) const;
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WorldGenParams params;
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PerlinNoise heightNoise;
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PerlinNoise tempNoise;
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PerlinNoise humidNoise;
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PerlinNoise mountainNoise;
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PerlinNoise caveNoise;
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PerlinNoise oreNoise;
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PerlinNoise treeNoise;
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};
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} // namespace vf
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