public static void swap(Platform p1, Platform p2)
{
p1.floatToPoint(p2.transform.position);
p2.floatToPoint(p1.transform.position);
if (swapStarted != null) swapStarted(p1, p2);
PlatformDelegate onFinish = (p) => {
if (!p1.floating && !p2.floating && swapFinished != null) swapFinished(p1, p2);
};
p1.stoppedFloating += onFinish;
p2.stoppedFloating += onFinish;
}