public int sample(int side) {
if ((sampled & 1 << side) == 0) {
c.set(pos).offset(side);
Block block = access.getBlock(c.x, c.y, c.z);
samples[side] =
access.getLightBrightnessForSkyBlocks(
c.x, c.y, c.z, block.getLightValue(access, c.x, c.y, c.z));
sampled |= 1 << side;
}
return samples[side];
}
public void locate(IBlockAccess a, int x, int y, int z) {
access = a;
pos.set(x, y, z);
sampled = 0;
}