WASD for move "0" to select Editor Mode, "p" to pause the game in Editor mode clic "o" to have the costume you are touching whit the mouse Sorry for some (or maybe to much) bugs in this project
Based in @griffpatch tutorials, but whit my code . https://turbowarp.org/715485329?hqpen&offscreen if you can have the game whit 60 FPS it is much better.