115 lines
3.2 KiB
C++
115 lines
3.2 KiB
C++
#ifndef TILEMAP_GENERATION_H
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#define TILEMAP_GENERATION_H
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#include "biome.h"
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#include "chunk.h"
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#include "noise.h"
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#include "tilemap.h"
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#include <array>
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#include <cstdint>
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#include <vector>
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namespace istd {
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struct GenerationConfig {
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Seed seed;
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// Noise parameters
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double temperature_scale = 0.05; // Scale for temperature noise
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int temperature_octaves = 3; // Number of octaves for temperature noise
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double temperature_persistence = 0.4; // Persistence for temperature noise
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double humidity_scale = 0.05; // Scale for humidity noise
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int humidity_octaves = 3; // Number of octaves for humidity noise
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double humidity_persistence = 0.4; // Persistence for humidity noise
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double base_scale = 0.08; // Scale for base terrain noise
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int base_octaves = 3; // Number of octaves for base terrain noise
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double base_persistence = 0.5; // Persistence for base terrain noise
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};
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// Terrain generator class that manages the generation process
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class TerrainGenerator {
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private:
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GenerationConfig config_;
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UniformPerlinNoise base_noise_; // For base terrain
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UniformPerlinNoise temperature_noise_; // For temperature
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UniformPerlinNoise humidity_noise_; // For humidity
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public:
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/**
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* @brief Construct a terrain generator with the given configuration
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* @param config Generation configuration
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*/
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explicit TerrainGenerator(const GenerationConfig &config);
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/**
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* @brief Generate terrain for the entire tilemap
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* @param tilemap The tilemap to generate into
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*/
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void generate_map(TileMap &tilemap);
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private:
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/**
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* @brief Generate biome data for all chunks
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* @param tilemap The tilemap to generate biomes into
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*/
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void generate_biomes(TileMap &tilemap);
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/**
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* @brief Generate terrain for a single chunk
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* @param tilemap The tilemap to modify
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* @param chunk_x Chunk X coordinate
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* @param chunk_y Chunk Y coordinate
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*/
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void generate_chunk(
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TileMap &tilemap, std::uint8_t chunk_x, std::uint8_t chunk_y
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);
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/**
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* @brief Generate terrain for a sub-chunk with specific biome
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* @param tilemap The tilemap to modify
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* @param chunk_x Chunk X coordinate
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* @param chunk_y Chunk Y coordinate
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* @param sub_pos Sub-chunk position within the chunk
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* @param biome The biome type for this sub-chunk
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*/
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void generate_subchunk(
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TileMap &tilemap, std::uint8_t chunk_x, std::uint8_t chunk_y,
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SubChunkPos sub_pos, BiomeType biome
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);
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/**
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* @brief Get climate values at a global position
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* @param global_x Global X coordinate
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* @param global_y Global Y coordinate
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* @return Pair of (temperature, humidity) in range [0,1]
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*/
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std::pair<double, double> get_climate(
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double global_x, double global_y
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) const;
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/**
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* @brief Determine base terrain type based on noise value and biome
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* properties
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* @param noise_value Base terrain noise value [0,1]
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* @param properties Biome properties to use
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* @return The appropriate base tile type
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*/
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BaseTileType determine_base_type(
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double noise_value, const BiomeProperties &properties
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) const;
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};
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/**
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* @brief Generate a tilemap using the new biome-based system
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* @param tilemap The tilemap to generate into
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* @param config Configuration for generation
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*/
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void map_generate(TileMap &tilemap, const GenerationConfig &config);
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} // namespace istd
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#endif
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