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refactor: use fBM for heightmap generation

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zhenyan121
2026-05-22 17:16:15 +08:00
parent b824504502
commit 17c7ad989d
14 changed files with 208 additions and 69 deletions
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2
include/Cubed/gameplay/biome.hpp
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@@ -6,7 +6,7 @@
namespace Cubed {
constexpr float BIOME_NOISE_FREQUENCY = 0.03f;
constexpr float HEIGHTMAP_NOISE_FREQUENCY = 0.001f;
enum class BiomeType { PLAIN = 0, FOREST, DESERT, MOUNTAIN, RIVER, NONE };
struct BiomeHeightRange {

13
include/Cubed/gameplay/chunk.hpp
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@@ -48,12 +48,21 @@ public:
Chunk(Chunk&&) noexcept;
Chunk& operator=(Chunk&&) noexcept;
static std::tuple<int, int, int> world_to_block(int world_x, int world_y,
int world_z, int chunk_x,
int chunk_z);
static std::tuple<int, int, int> world_to_block(const glm::ivec3& block_pos,
ChunkPos chunk_pos);
static std::tuple<int, int, int> block_to_world(int x, int y, int z,
int chunk_x, int chunk_z);
static std::tuple<int, int, int> block_to_world(const glm::ivec3& block_pos,
ChunkPos chunk_pos);
BiomeType get_biome() const;
ChunkPos get_chunk_pos() const;
const std::vector<BlockType>& get_chunk_blocks() const;
HeightMapArray get_heightmap() const;
static int get_index(int x, int y, int z);
static int get_index(const glm::vec3& pos);
static int index(int x, int y, int z);
static int index(const glm::vec3& pos);
// Init Chunk
// Determine biome from temperature and humidity noise
void gen_phase_one();

17
include/Cubed/tools/perlin_noise.hpp
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@@ -4,7 +4,7 @@
namespace Cubed {
class PerlinNoise {
class PerlinNoise3D {
public:
static void init(unsigned seed);
static float noise(float x, float y, float z);
@@ -18,4 +18,19 @@ private:
static float grad(int hash, float x, float y, float z);
};
class PerlinNoise2D {
public:
static void init(unsigned seed);
static float noise(float x, float y);
static void reload(unsigned seed);
private:
static inline std::atomic<bool> is_init = false;
static inline std::vector<int> p;
static float fade(float t);
static float lerp(float t, float a, float b);
static float grad(int hash, float x, float y);
};
} // namespace Cubed