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feat(world-gen): larger biomes, smooth height blending, capped mountains; centralize tunables in Configuration

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Terrain feel: biome regions ~10x larger (Voronoi cell size 96->960); terrain height now eases across biome borders via a Voronoi distance blend (smooth, and ~25x cheaper than the old 169-sample box blur); mountains capped to ~2/3 world height and gentled (ridged amplitude/frequency lowered), snow line lowered to match.

Centralization: ~27 world-gen/render tuning constants (biome amplitudes & frequencies, climate-noise frequencies/octaves, biome-selection thresholds, blend width, cell size, filler depth, snow line, camera near plane, spawn offset, overlay scale) hoisted from scattered literals into a region-organized, fully-commented Configuration. Configuration is threaded into NoiseSource, the biomes, BiomeRegistry, BiomeMap (+Classify), TerrainSampler, WorldGenerator (+BlockAt filler depth), and Camera via Player. Defaults equal the prior values, so generation is unchanged; worldgen tests updated for the new constructor signatures.
This commit is contained in:
MDietermann
2026-06-03 16:27:06 +02:00
parent 96b8fffcd4
commit e034d10339
18 changed files with 367 additions and 136 deletions
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23
World/WorldGen/WorldGenerator.cs
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@@ -7,9 +7,7 @@ namespace VoxelEngine.World.WorldGen;
public sealed class WorldGenerator
{
private const int FillerDepth = 3;
private const float CellSize = 96f;
private readonly Configuration _cfg;
private readonly BlockRegistry _blocks;
private readonly BiomeMap _biomeMap;
private readonly TerrainSampler _terrain;
@@ -17,17 +15,20 @@ public sealed class WorldGenerator
public WorldGenerator(int seed, BlockRegistry blocks, Configuration cfg)
{
this._cfg = cfg;
this._blocks = blocks;
NoiseSource noise = new(seed);
VoronoiCells cells = new(seed, WorldGenerator.CellSize);
BiomeRegistry biomes = new(seed, blocks);
this._biomeMap = new BiomeMap(noise, cells, biomes);
this._terrain = new TerrainSampler(noise, this._biomeMap);
NoiseSource noise = new(seed, cfg);
VoronoiCells cells = new(seed, cfg.BiomeCellSize);
BiomeRegistry biomes = new(seed, blocks, cfg);
this._biomeMap = new BiomeMap(noise, cells, biomes, cfg);
this._terrain = new TerrainSampler(noise, this._biomeMap, cfg);
this._caves = new CaveCarver(seed, blocks, cfg);
}
public int SurfaceHeightAt(int worldX, int worldZ) => this._terrain.HeightAt(worldX, worldZ);
public string BiomeNameAt(int worldX, int worldZ) => this._biomeMap.BiomeAt(worldX, worldZ).Name;
public VoxelChunk Generate(Vector3i chunkPos)
{
VoxelChunk chunk = new();
@@ -46,7 +47,7 @@ public sealed class WorldGenerator
for (int y = 0; y < VoxelChunk.Size; y++)
{
int worldY = baseY + y;
chunk[x, y, z] = WorldGenerator.BlockAt(worldY, height, biome, this._blocks);
chunk[x, y, z] = BlockAt(worldY, height, biome, this._blocks, this._cfg.SurfaceFillerDepth);
}
}
@@ -54,13 +55,13 @@ public sealed class WorldGenerator
return chunk;
}
public static ushort BlockAt(int worldY, int surfaceHeight, IBiome biome, BlockRegistry blocks)
public static ushort BlockAt(int worldY, int surfaceHeight, IBiome biome, BlockRegistry blocks, int fillerDepth)
{
if (worldY > surfaceHeight)
return worldY <= WorldConstants.SeaLevel ? blocks.Water.Id : blocks.Air.Id;
if (worldY == surfaceHeight)
return biome.TopBlock(worldY).Id;
if (worldY >= surfaceHeight - WorldGenerator.FillerDepth)
if (worldY >= surfaceHeight - fillerDepth)
return biome.Surface.Filler.Id;
return biome.Surface.Under.Id;
}