PlatformEffectorComp:

platformIgnore: Set<GameObj>

A set of the objects that should not collide with this, because `shouldCollide` returned true. Objects in here are automatically removed when they stop colliding, so the casual user shouldn't need to touch this much. However, if an object is added to this set before the object collides with the platform effector, it won't collide even if `shouldCollide` returns true.