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.

     1

#include <QApplication>

     2

     3

#include "mainform.h"

     4

     5

int main(int argc, char *argv[])

     6

{

     7

    QApplication app(argc, argv);

     8

    MyWindow *mainWin = new MyWindow;

     9

    mainWin->show();

    10

    return app.exec();

    11

}