test the 2d shadows editor: 0 none (test your map, you can drag the green circle) 1 dragging points 2 adding points (you can insert a point in a wall) 3 connecting points 4 deleting walls and points fun fact: this is a random flat i remember from my childhood, idk where or who's it is tho LOL
highly inspired by @alltrue \ oh261401's off scratch project @arzenist for the current tri filler
