public void UpdateHeightMap(int lx, int ly, int lz)
{
BlockInfo info = _blockset.GetInfo(lx, ly, lz);
int h = Math.Min(ly + 1, _ydim - 1);
int height = _blockset.GetHeight(lx, lz);
if (h < height)
{
return;
}
if (h == height && !info.ObscuresLight)
{
for (int i = ly - 1; i >= 0; i--)
{
BlockInfo info2 = _blockset.GetInfo(lx, i, lz);
if (info2.ObscuresLight)
{
_blockset.SetHeight(lx, lz, Math.Min(i + 1, _ydim - 1));
break;
}
}
UpdateBlockSkyLight(lx, h, lz);
}
else if (h > height && info.ObscuresLight)
{
_blockset.SetHeight(lx, lz, h);
UpdateBlockSkyLight(lx, h, lz);
}
}
private int NeighborHeight(int x, int z)
{
IBoundedLitBlockCollection src = LocalChunk(x, 0, z);
if (src == null)
{
return(_ydim - 1);
}
x = (x + _xdim * 2) % _xdim;
z = (z + _zdim * 2) % _zdim;
return(src.GetHeight(x, z));
}
private void UpdateBlockSkyLight()
{
IBoundedLitBlockCollection[,] chunkMap = LocalBlockLightMap();
int xdim = _xdim;
int ydim = _ydim;
int zdim = _zdim;
while (_update.Count > 0)
{
BlockKey k = _update.Dequeue();
int index = LightBitmapIndex(k);
_lightbit[index] = false;
int xi = k.x + xdim;
int zi = k.z + zdim;
IBoundedLitBlockCollection cc = chunkMap[xi / xdim, zi / zdim];
if (cc == null)
{
continue;
}
int x = xi % xdim;
int y = k.y;
int z = zi % zdim;
int lightval = cc.GetSkyLight(x, y, z);
BlockInfo info = cc.GetInfo(x, y, z);
int light = BlockInfo.MIN_LUMINANCE;
if (cc.GetHeight(x, z) <= y)
{
light = BlockInfo.MAX_LUMINANCE;
}
else
{
int lle = NeighborSkyLight(chunkMap, k.x, k.y, k.z - 1);
int lln = NeighborSkyLight(chunkMap, k.x - 1, k.y, k.z);
int lls = NeighborSkyLight(chunkMap, k.x, k.y, k.z + 1);
int llw = NeighborSkyLight(chunkMap, k.x + 1, k.y, k.z);
int lld = NeighborSkyLight(chunkMap, k.x, k.y - 1, k.z);
int llu = NeighborSkyLight(chunkMap, k.x, k.y + 1, k.z);
light = Math.Max(light, lle);
light = Math.Max(light, lln);
light = Math.Max(light, lls);
light = Math.Max(light, llw);
light = Math.Max(light, lld);
light = Math.Max(light, llu);
}
light = Math.Max(light - info.Opacity, 0);
if (light != lightval)
{
//Console.WriteLine("Block SkyLight: ({0},{1},{2}) " + lightval + " -> " + light, k.x, k.y, k.z);
cc.SetSkyLight(x, y, z, light);
if (info.TransmitsLight)
{
if (k.y > 0)
{
QueueRelight(new BlockKey(k.x, k.y - 1, k.z));
}
if (k.y < ydim - 1)
{
QueueRelight(new BlockKey(k.x, k.y + 1, k.z));
}
QueueRelight(new BlockKey(k.x - 1, k.y, k.z));
QueueRelight(new BlockKey(k.x + 1, k.y, k.z));
QueueRelight(new BlockKey(k.x, k.y, k.z - 1));
QueueRelight(new BlockKey(k.x, k.y, k.z + 1));
}
}
}
}
