Bit curious after JamaicanBacon said the spot wasn't cade-able.

In grass, under the room guarded by a code. Is a room, with a gated wall and telephone on the wall. Now you can only get in if you crotch.

C: What I was doing is. Leaving it open until a zombie comes in. Shooting a vending machine onto them.
Q: Illegal? Since I am keeping entrance open but using the area objects to my advantage?