An attempt to run main rope code only every 8th tick: - A big win for inner loop which is O(n^2) and thus it takes 64 times less cpu now. - Look and feel is almost identical (well, to my non-pro view) - Yes, the speed is limited to 7 px per accounting tick which is potentially very bad to collisions - Ruin shoppa

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#include <QtGui/QApplication>

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#include "mainwindow.h"

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

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{

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    QApplication a(argc, argv);

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    MainWindow w;

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    w.show();

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    return a.exec();

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}