How to Create and Import a 15 Block Auto-Tiler sprite for Gamemaker

How to create the 16 block auto-tiler sprite

Using the Create a 16 block Auto-Tileset sprite, a 8 by 2 sprite strip is needed for GameMaker engine to read and use.

What does 8 by 2 mean?

Each unit represents a block. Each block is a set size (8, 16, 32, etc.. pixels)

So if the Tileset was created using 32 pixel blocks, the total size of the 8 by 2 sprite strip

Dimensions are measured in the order of width and height.

So 8 by 2 is shorter way of saying, 8 blocks width and 2 blocks height.

What is the total size of the 8 by 2 Sprite Sheet?

The reason why the units of size is described in blocks is because tileset sizes vary from game to game.

If the block size is 32 pixels, then the 8 by 2 Auto-Tile Sheet will be:

32 x 8 = 256 pixels width

32 x 2 = 64 pixels heightb

256 by 64

Gamemaker uses a 8x2 sprite sheet for its 15 block auto-tilers. Note that the 16th block is an empty tile.

How to import and use an auto-tiler sprite sheet in gamemaker***

Follow these steps inside of Gamemaker Studio 2 to utilize the auto-tiler feature

Create a Room
Create a New Tileset Layer that is above your Objects, Block Object and Background Layers
Make sure the Tileset Layer is Visible
Adjust the Tileset Layer so it appears behind Objects but above the Block Object/Background Layers