Fix minigun bullets sometimes failing to hit when shooting same thing twice in row alfadur says: “the stale collision cache is searched in, so if you shoot at same thing twice in a row, chances are it woudln't get hit”

#include <QApplication>

#include "mainform.h"

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MyWindow *mainWin = new MyWindow;
    mainWin->show();
    return app.exec();
}