UPDATE 2023-01-17: All files(Phantasyxxxxxxx.xxx) have been updated. The debug tools now work as intended even for keyboard users.
UPDATE 2021-12-24: You can now download the project file(GMS2 2.3+) from the link below. It includes only the crawler engine itself, but the code is solid. We will see when I can upload a tutorial on this. At least you can now play around and experiment with the code as you like. Merry Christmas!
https://drive.google.com/drive/folder...