fCraft.PlantTask.CanGrow C# (CSharp) Method

        private bool CanGrow( int height )
        {
            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;
        }