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.

#include <stdio.h>
#include "openalbridge.h"

int main (int argc, int **argv) {
    
    openal_init();
    
    openal_close();
    
    return 0;
}