Is there a way to create a collision mask that has indents?
Each collision mask has to be a convex polygon (any number of vertices), but you can have multiple collision masks, so you can simulate any complex shape (even concave ones)
You can’t do it:
But you can do it:
Take into account that increasing the number of vertices and collision masks reduce the performace per collision test, specially in HTML5, but I have never tested it though…
Ah okay, great. Does it matter if they overlap? (trying to minimize potential missed collisions).
No, GD doesn’t check overlaps with the object itself