private void OnChunkColumnGeneration(IServerChunk[] chunks, int chunkX, int chunkZ, ITreeAttribute chunkGenParams = null)
{
rnd.InitPositionSeed(chunkX, chunkZ);
IntDataMap2D forestMap = chunks[0].MapChunk.MapRegion.ForestMap;
IntDataMap2D climateMap = chunks[0].MapChunk.MapRegion.ClimateMap;
IntDataMap2D beachMap = chunks[0].MapChunk.MapRegion.BeachMap;
ushort[] heightMap = chunks[0].MapChunk.RainHeightMap;
int regionChunkSize = api.WorldManager.RegionSize / chunksize;
int rdx = chunkX % regionChunkSize;
int rdz = chunkZ % regionChunkSize;
// Amount of data points per chunk
float climateStep = (float)climateMap.InnerSize / regionChunkSize;
float forestStep = (float)forestMap.InnerSize / regionChunkSize;
float beachStep = (float)beachMap.InnerSize / regionChunkSize;
// Retrieves the map data on the chunk edges
int forestUpLeft = forestMap.GetUnpaddedInt((int)(rdx * forestStep), (int)(rdz * forestStep));
int forestUpRight = forestMap.GetUnpaddedInt((int)(rdx * forestStep + forestStep), (int)(rdz * forestStep));
int forestBotLeft = forestMap.GetUnpaddedInt((int)(rdx * forestStep), (int)(rdz * forestStep + forestStep));
int forestBotRight = forestMap.GetUnpaddedInt((int)(rdx * forestStep + forestStep), (int)(rdz * forestStep + forestStep));
int beachUpLeft = beachMap.GetUnpaddedInt((int)(rdx * beachStep), (int)(rdz * beachStep));
int beachUpRight = beachMap.GetUnpaddedInt((int)(rdx * beachStep + beachStep), (int)(rdz * beachStep));
int beachBotLeft = beachMap.GetUnpaddedInt((int)(rdx * beachStep), (int)(rdz * beachStep + beachStep));
int beachBotRight = beachMap.GetUnpaddedInt((int)(rdx * beachStep + beachStep), (int)(rdz * beachStep + beachStep));
// increasing x -> left to right
// increasing z -> top to bottom
float transitionSize = blockLayerConfig.blockLayerTransitionSize;
for (int x = 0; x < chunksize; x++)
{
for (int z = 0; z < chunksize; z++)
{
// Some weird randomnes stuff to hide fundamental bugs in the climate transition system :D T_T (maybe not bugs but just fundamental shortcomings of using lerp on a very low resolution map)
float distx = (float)distort2dx.Noise(chunkX * chunksize + x, chunkZ * chunksize + z);
float distz = (float)distort2dz.Noise(chunkX * chunksize + x, chunkZ * chunksize + z);
double posRand = (double)GameMath.MurmurHash3(x + chunkX * chunksize, 1, z + chunkZ * chunksize) / int.MaxValue;
double transitionRand = (posRand + 1) * transitionSize;
int posY = heightMap[z * chunksize + x];
int climate = climateMap.GetUnpaddedColorLerped(
rdx * climateStep + climateStep * (float)(x + distx) / chunksize,
rdz * climateStep + climateStep * (float)(z + distz) / chunksize
);
int tempUnscaled = (climate >> 16) & 0xff;
int rnd = (int)(distx / 5);
float temp = TerraGenConfig.GetScaledAdjustedTemperatureFloat(tempUnscaled, posY - TerraGenConfig.seaLevel + rnd);
float tempRel = TerraGenConfig.GetAdjustedTemperature(tempUnscaled, posY - TerraGenConfig.seaLevel + rnd) / 255f;
float rainRel = TerraGenConfig.GetRainFall((climate >> 8) & 0xff, posY + rnd) / 255f;
float forestRel = GameMath.BiLerp(forestUpLeft, forestUpRight, forestBotLeft, forestBotRight, (float)x / chunksize, (float)z / chunksize) / 255f;
float beachRel = GameMath.BiLerp(beachUpLeft, beachUpRight, beachBotLeft, beachBotRight, (float)x / chunksize, (float)z / chunksize) / 255f;
int prevY = posY;
posY = PutLayers(transitionRand, x, posY, z, chunks, rainRel, temp, tempUnscaled, heightMap);
int blockID = chunks[0].MapChunk.TopRockIdMap[z * chunksize + x];
GenBeach(x, prevY, z, chunks, rainRel, temp, beachRel, blockID);
PlaceTallGrass(x, prevY, z, chunks, rainRel, tempRel, temp, forestRel);
// Try again to put layers if above sealevel and we found over 10 air blocks
int foundAir = 0;
while (posY >= TerraGenConfig.seaLevel - 1)
{
int chunkY = posY / chunksize;
int lY = posY % chunksize;
int index3d = (chunksize * lY + z) * chunksize + x;
int blockId = chunks[chunkY].Blocks[index3d];
if (blockId == 0)
{
foundAir++;
}
else
{
if (foundAir >= 8)
{
//temp = TerraGenConfig.GetScaledAdjustedTemperatureFloat(tempUnscaled, posY - TerraGenConfig.seaLevel);
//rainRel = TerraGenConfig.GetRainFall((climate >> 8) & 0xff, posY) / 255f;
//PutLayers(transitionRand, x, posY, z, chunks, rainRel, temp, tempUnscaled, null);
break;
}
else
{
foundAir = 0;
}
}
posY--;
}
}
}
}
