Placement Layers

Placement Layers are the "third dimension" of the Terraria world. Each square on each layer can only be occupied by a single object with the exception of the Character layer, however, some objects can occupy multiple layers in the same square.


 * 1) Character Level -- Both player and non-player Characters as well as items may pass through each other so long as they occupy this layer.
 * 2) Block Layer -- Blocks like dirt, stone, ores, plants, items and Characters occupy this layer. As such, they cannot walk through blocks. Some Spells do not occupy this layer, and thus may pass through blocks. Doors can switch in and out of this layer.
 * 3) Wire -- All wires and servos occupy this layer and no other.
 * 4) Berrowing Mobs -- This is where Bosses and Worms hang out.
 * 5) Furniture -- Doors, Lights, Rope, Platforms and all manner of furniture
 * 6) Wall --