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 <QApplication>

#include "mainform.h"

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