I want a script that when Link is standing in the lower level (as defined by a flag) his weapons cannot go outside of this area. But, when Link is in the upper level (anywhere other than the flag) his weapons cannot affect anything inside the lower level.
The second part might be difficult to do, I mainly want the first part.
Example:
As you can see, Link can stand in the lower level and throw the boomerang at the switch. I want it to hit the wall and bounce back. But if Link is standing in the upper level, it should not be blocked by the wall.