[SCRIPT] Entity collide that uses every entity in the level?

[HappyMatt12345]

You see, I'm working on a custom story called "Order of the Skull" and I am trying to make a script that will do something if one of any movable entity in the level that will fit in the location of the area is placed in that area, and the player presses a button, I know I could do 30 different AddEntityCollideCallback's but that just seems impractical, and I feel there must be a more efficient way. Any ideas and/or suggestions are much appreciated