fCraft.GrassTask.CastsShadow C# (CSharp) Method

        public static bool CastsShadow( Block block )
        {
            switch ( block ) {
                case Block.Air:
                case Block.Glass:
                case Block.Leaves:
                case Block.YellowFlower:
                case Block.RedFlower:
                case Block.BrownMushroom:
                case Block.RedMushroom:
                case Block.Plant:
                    return false;
                default:
                    return true;
            }
        }

        private bool CanGrow(int height) //no shadows and enough space
        {
            for (int z = _z + 1; z < _map.Height; ++z)
            {
                if (GrassTask.CastsShadow(_map.GetBlock(_x, _y, z)))
                {
                    return(false);
                }
            }

            for (int x = _x - 5; x < _x + 5; ++x)
            {
                for (int y = _y - 5; y < _y + 5; ++y)
                {
                    for (int z = _z + 1; z < _z + height; ++z)
                    {
                        Block b = _map.GetBlock(x, y, z);
                        if (Block.Air != b && Block.Leaves != b)
                        {
                            return(false);
                        }
                    }
                }
            }

            return(true);
        }