Grid the landscape, and shortcircuit checks on the collision array if there are no nearby checked in collisions to be collided with. This is a big win for fire's ammoshove in particular. Also add a +2 that seemed missing in the check, and update fire accordingly.

/*
 *  InstallController.cpp
 *  
 *
 *  Created by Vittorio on 28/09/09.
 *  Copyright 2009 __MyCompanyName__. All rights reserved.
 *
 */

#include "InstallController.h"

InstallController::~InstallController()
{
}