private Biome GetPrimaryAndHeight(Chunk chunk, int chunkPosX, int chunkPosZ, int x, int z, out double height)
{
Biome primaryBiome = chunk.GetBiome(chunkPosX, chunkPosZ, false);
double x1, x2, y1, y2;
x1 = x2 = y1 = y2 = primaryBiome.GetHeightValue(x, z);
if (AttemptFindBiomeTransition(chunk, chunkPosX, chunkPosZ, primaryBiome, x, z, Chunk.BIOME_BLEND_DISTANCE, 1, 0, out int steps1, out double biomeHeight1))
{
x2 = biomeHeight1;
}
if (AttemptFindBiomeTransition(chunk, chunkPosX, chunkPosZ, primaryBiome, x, z, Chunk.BIOME_BLEND_DISTANCE, -1, 0, out int steps2, out double biomeHeight2))
{
x1 = biomeHeight2;
}
double biasX = (1.0 - steps1 / (double)(Chunk.BIOME_BLEND_DISTANCE + 1) + steps2 / (double)(Chunk.BIOME_BLEND_DISTANCE + 1)) / 2;
if (AttemptFindBiomeTransition(chunk, chunkPosX, chunkPosZ, primaryBiome, x, z, Chunk.BIOME_BLEND_DISTANCE, 0, 1, out int steps3, out double biomeHeight3))
{
y2 = biomeHeight3;
}
if (AttemptFindBiomeTransition(chunk, chunkPosX, chunkPosZ, primaryBiome, x, z, Chunk.BIOME_BLEND_DISTANCE, 0, -1, out int steps4, out double biomeHeight4))
{
y1 = biomeHeight4;
}
double biasZ = (1.0 - steps3 / (double)(Chunk.BIOME_BLEND_DISTANCE + 1) + steps4 / (double)(Chunk.BIOME_BLEND_DISTANCE + 1)) / 2;
height = x1;
return(primaryBiome);
}
private bool AttemptFindBiomeTransition(Chunk chunk, int chunkPosX, int chunkPosZ, Biome primaryBiome, int x, int z, int maxDistance, int xMove, int zMove, out int steps, out double height)
{
for (int dist = 1; dist <= maxDistance; dist++)
{
int newX = x + xMove * dist;
int newZ = z + zMove * dist;
Biome biome = chunk.GetBiome(chunkPosX + xMove * dist, chunkPosZ + zMove * dist, false);
if (biome != primaryBiome)
{
steps = dist;
height = biome.GetHeightValue(newX, newZ);
return(true);
}
}
steps = 0;
height = 0;
return(false);
}
