private void SpreadSkyLight(IBoundedLitBlockCollection[,] chunkMap, int[,] heightMap, int lx, int ly, int lz)
{
BlockInfo primary = _blockset.GetInfo(lx, ly, lz);
int primaryLight = _blockset.GetSkyLight(lx, ly, lz);
int priLum = Math.Max(BlockInfo.MAX_LUMINANCE - primary.Opacity, 0);
if (primaryLight < priLum)
{
_blockset.SetSkyLight(lx, ly, lz, priLum);
}
if (primaryLight > BlockInfo.MAX_LUMINANCE - 1 || !primary.TransmitsLight)
{
return;
}
Queue <LightRecord> spread = new Queue <LightRecord>();
int xdim = _xdim;
int ydim = _ydim;
int zdim = _zdim;
int lxi = lx + xdim;
int lzi = lz + zdim;
int strength = (primary.Opacity > 0) ? priLum : priLum - 1;
if (ly > 0)
{
if (heightMap[lxi, lzi] > ly - 1)
{
spread.Enqueue(new LightRecord(lx, ly - 1, lz, strength));
}
else
{
spread.Enqueue(new LightRecord(lx, ly - 1, lz, priLum));
}
}
if (ly < ydim - 1)
{
if (heightMap[lxi, lzi] > ly + 1)
{
spread.Enqueue(new LightRecord(lx, ly + 1, lz, strength));
}
}
if (heightMap[lxi - 1, lzi] > ly)
{
spread.Enqueue(new LightRecord(lx - 1, ly, lz, strength));
}
if (heightMap[lxi + 1, lzi] > ly)
{
spread.Enqueue(new LightRecord(lx + 1, ly, lz, strength));
}
if (heightMap[lxi, lzi - 1] > ly)
{
spread.Enqueue(new LightRecord(lx, ly, lz - 1, strength));
}
if (heightMap[lxi, lzi + 1] > ly)
{
spread.Enqueue(new LightRecord(lx, ly, lz + 1, strength));
}
while (spread.Count > 0)
{
LightRecord rec = spread.Dequeue();
int xi = rec.x + xdim;
int zi = rec.z + zdim;
IBoundedLitBlockCollection cc = chunkMap[xi / xdim, zi / zdim];
if (cc == null)
{
continue;
}
int x = xi % xdim;
int y = rec.y;
int z = zi % zdim;
BlockInfo info = cc.GetInfo(x, y, z);
int light = cc.GetSkyLight(x, y, z);
int dimStr = Math.Max(rec.str - info.Opacity, 0);
if (dimStr > light)
{
cc.SetSkyLight(x, y, z, dimStr);
if (info.TransmitsLight)
{
strength = (info.Opacity > 0) ? dimStr : dimStr - 1;
if (rec.y > 0)
{
if (heightMap[xi, zi] > rec.y - 1)
{
spread.Enqueue(new LightRecord(rec.x, rec.y - 1, rec.z, strength));
}
else
{
spread.Enqueue(new LightRecord(rec.x, rec.y - 1, rec.z, dimStr));
}
}
if (rec.y < ydim - 1)
{
if (heightMap[xi, zi] > rec.y + 1)
{
spread.Enqueue(new LightRecord(rec.x, rec.y + 1, rec.z, strength));
}
}
if (heightMap[xi - 1, zi] > rec.y)
{
spread.Enqueue(new LightRecord(rec.x - 1, rec.y, rec.z, strength));
}
if (heightMap[xi + 1, zi] > rec.y)
{
spread.Enqueue(new LightRecord(rec.x + 1, rec.y, rec.z, strength));
}
if (heightMap[xi, zi - 1] > rec.y)
{
spread.Enqueue(new LightRecord(rec.x, rec.y, rec.z - 1, strength));
}
if (heightMap[xi, zi + 1] > rec.y)
{
spread.Enqueue(new LightRecord(rec.x, rec.y, rec.z + 1, strength));
}
}
}
}
}
private void SpreadBlockLight(IBoundedLitBlockCollection[,] chunkMap, int lx, int ly, int lz)
{
BlockInfo primary = _blockset.GetInfo(lx, ly, lz);
int primaryLight = _blockset.GetBlockLight(lx, ly, lz);
int priLum = Math.Max(primary.Luminance - primary.Opacity, 0);
if (primaryLight < priLum)
{
_blockset.SetBlockLight(lx, ly, lz, priLum);
}
if (primaryLight > primary.Luminance - 1 && !primary.TransmitsLight)
{
return;
}
int xdim = _xdim;
int ydim = _ydim;
int zdim = _zdim;
Queue <LightRecord> spread = new Queue <LightRecord>();
if (ly > 0)
{
spread.Enqueue(new LightRecord(lx, ly - 1, lz, primary.Luminance - 1));
}
if (ly < ydim - 1)
{
spread.Enqueue(new LightRecord(lx, ly + 1, lz, primary.Luminance - 1));
}
spread.Enqueue(new LightRecord(lx - 1, ly, lz, primary.Luminance - 1));
spread.Enqueue(new LightRecord(lx + 1, ly, lz, primary.Luminance - 1));
spread.Enqueue(new LightRecord(lx, ly, lz - 1, primary.Luminance - 1));
spread.Enqueue(new LightRecord(lx, ly, lz + 1, primary.Luminance - 1));
while (spread.Count > 0)
{
LightRecord rec = spread.Dequeue();
int xi = rec.x + xdim;
int zi = rec.z + zdim;
IBoundedLitBlockCollection cc = chunkMap[xi / xdim, zi / zdim];
if (cc == null)
{
continue;
}
int x = xi % xdim;
int y = rec.y;
int z = zi % zdim;
BlockInfo info = cc.GetInfo(x, y, z);
int light = cc.GetBlockLight(x, y, z);
int dimStr = Math.Max(rec.str - info.Opacity, 0);
if (dimStr > light)
{
cc.SetBlockLight(x, y, z, dimStr);
if (info.TransmitsLight)
{
int strength = (info.Opacity > 0) ? dimStr : dimStr - 1;
if (rec.y > 0)
{
spread.Enqueue(new LightRecord(rec.x, rec.y - 1, rec.z, strength));
}
if (rec.y < ydim - 1)
{
spread.Enqueue(new LightRecord(rec.x, rec.y + 1, rec.z, strength));
}
spread.Enqueue(new LightRecord(rec.x - 1, rec.y, rec.z, strength));
spread.Enqueue(new LightRecord(rec.x + 1, rec.y, rec.z, strength));
spread.Enqueue(new LightRecord(rec.x, rec.y, rec.z - 1, strength));
spread.Enqueue(new LightRecord(rec.x, rec.y, rec.z + 1, strength));
}
}
}
}
