Focus camera on moving current hog (probably more important to player). Should make tumbler, sine gun play, attacking off rope and saucer more playable. Also fix a typo in prior offset, and compensate for zoom.

#include <QtGui/QApplication>
#include "mainwindow.h"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    return a.exec();
}