fCraft.FloatingIslandMapGenState.Erode C# (CSharp) Method

        void Erode() {
            for( int x = 0; x < map.Width; x++ ) {
                for( int y = 0; y < map.Length; y++ ) {
                    for( int z = map.Height - 1; z > 0; z-- ) {
                        if( map.GetBlock( x, y, z ) == Block.Dirt && map.GetBlock( x, y, z - 1 ) == Block.Air &&
                            rand.NextDouble() > .5 ) {
                            map.SetBlock( x, y, z, Block.Air );
                        }
                    }
                }
            }
        }