Stone pillars now use a separate rectangular collision to determine hiding zones, preventing the player from hiding along the outer edges of the pillar. Release Build 9948.
//NOTE: Marking a monster for deletion does not trigger any death events. It just simply removes the monster from the field!!
// The way this works is that monsters marked for deletion will cause the monster update loop to detect there's at least one or more monsters that must be deleted and will call erase_if on the list at the end of the iteration loop.