AutotileGenerator

Generates a tilemap usable for autotiles from subtiles (e.g. in Godot)

Generating the subtiles

We start with a small tileset including all required subtiles (inner and outer borders as well as center tile and variations)

We cut this tileset into according subtiles and save them with the given nomenclature as single files:

tyx.png -> t: Inner/Outer, y: Top/Center/Bottom, x: Left/Center/Right

I: Inner
T: Top
B: Bottom
C: Center
L: Left
R: Right

Special cases are OC0.png and OCi.png for variations of the center tiles. In the current script it's assumed that OC0.png, OC1.png and OC2.png exist. Additionally one tile NNN.png of full transparency with according size is required.

e.g.

ITL.png	ITR.png
IBL.png	IBR.png

OTL.png	OTC.png	OTR.png
OCL.png	OC0.png	OCR.png
OBL.png	OBC.png	OBR.png

Running the script AutotileGenerator.py

A png is created which can be used for autotiling:

Godot Example

The generated png can be e.g. used with Godot's Autotile: