OpenMinecraft.InfdevHandler.CompressLight C# (CSharp) Method

		public void CompressLight(ref byte[] lightdata, bool sky, int x, int y, int z, byte val)
        {
            int index = GetBlockIndex(x, y, z);
            int lightval = lightdata[index >> 1];
            if ((y % 2) !=0)
            {
                if (sky)
                {
                    lightval &= 0x0f;
                    lightval |= val << 4;
                } else {
                    lightval &= 0xf;
                    lightval |= val << 4;
                }
            }
            else
            {
                if (sky)
                {
                    lightval &= 0xf0;
                    lightval |= val;
                } else {
                    lightval &= 0xf0;
                    lightval |= val;
                }
            }
            lightdata[index >> 1] = val;
		}