src/world/Generator.hpp

   1 #ifndef BLANK_WORLD_GENERATOR_HPP_
   2 #define BLANK_WORLD_GENERATOR_HPP_
   3
   4 #include "../rand/SimplexNoise.hpp"
   5 #include "../rand/WorleyNoise.hpp"
   6
   7 #include <cstdint>
   8 #include <glm/glm.hpp>
   9
  10
  11 namespace blank {
  12
  13 class Block;
  14 class BlockTypeRegistry;
  15 class Chunk;
  16
  17 class Generator {
  18
  19 public:
  20         struct Config {
  21                 std::uint64_t seed = 0;
  22                 struct NoiseParam {
  23                         std::uint64_t seed_mask;
  24                         int octaves;
  25                         float persistence;
  26                         float frequency;
  27                         float amplitude;
  28                         float growth;
  29                 };
  30                 NoiseParam solidity = { 0xA85033F6BCBDD110, 3, 0.5f, 1.0f/64.0f, 2.0f, 2.0f };
  31                 NoiseParam humidity = { 0x3A463FB24B04A901, 3, 0.5f, 1.0f/256.0f, 2.0f, 2.0f };
  32                 NoiseParam temperature = { 0x2530BA6C6134A9FB, 3, 0.5f, 1.0f/512.0f, 2.0f, 2.0f };
  33                 NoiseParam richness = { 0x95A179F180103446, 3, 0.5f, 1.0f/128.0f, 2.0f, 2.0f };
  34                 NoiseParam randomness = { 0x074453EEE1496390, 3, 0.5f, 1.0f/16.0f, 2.0f, 2.0f };
  35         };
  36
  37         explicit Generator(const Config &, const BlockTypeRegistry &) noexcept;
  38
  39         // scan types for generation
  40         void Scan();
  41
  42         void operator ()(Chunk &) const noexcept;
  43
  44 private:
  45         Block Generate(const glm::vec3 &position) const noexcept;
  46         static float GetValue(
  47                 const SimplexNoise &,
  48                 const glm::vec3 &,
  49                 const Config::NoiseParam &) noexcept;
  50
  51 private:
  52         const Config &config;
  53         const BlockTypeRegistry &types;
  54         SimplexNoise solidity_noise;
  55         SimplexNoise humidity_noise;
  56         SimplexNoise temperature_noise;
  57         SimplexNoise richness_noise;
  58         SimplexNoise random_noise;
  59
  60 };
  61
  62 }
  63
  64 #endif