Tile Maps are an exciting new feature in Xcode 8, enabling you to “paint” your levels essentially, using tiled artwork.  We’ve added a few properties to make your tile maps even more useful. The TileMaps dictionary resides in the level dictionary. Within this dictionary you will include sub-dictionaries with key names that match the name of the Tile Map node in the scene.
You can set the following properties…
- Parallax – a small, decimal number that can be used to offset the location of the tile map whenever the player moves. This can create a parallax effect. Try small numbers initially like 1.1 or -1.1
- Alpha – a decimal number value to change the alpha of the entire tile map. 0 would make the tile map completely invisible.
- CreateBody – a Boolean value. Set this to YES and the kit will make the painted tiles in the TileMap have a physics body. This won’t add a physics body to unpainted bodies.
- ForceSize – this addresses a bug with Xcode (not the kit), where the width and height of tiles default to 64 by 64 anytime Xcode crashes. Setting this value in { width ,height }  format will change them back to a specific size. Most likely though, you’ll just want to select the TileMap in the Scene Editor and set the width and height there.