After clicking the Green Flag, click anywhere on the Stage to add a point at the position of the mouse. You may also edit the Backdrop to add custom obstacles.
Note: Due to extreme FPS Drops while the script is running, it is highly recommended to run this in Turbowarp: https://turbowarp.org/1227054994 This Project also uses the Scratch Addons debugging tool, so Custom Blocks without a definition are blocks from said tool.