private void switch_clocks() throws Exception {
activeClock.pause();
Iterator<Entry<PlayerColor, Clock>> iter = playerClocks.entrySet().iterator();
while (iter.hasNext()) {
Entry<PlayerColor, Clock> entry = iter.next();
if (entry.getValue() == activeClock) {
Entry<PlayerColor, Clock> nextEntry = null;
if (iter.hasNext()) {
nextEntry = iter.next();
} else { // next is first one
nextEntry = playerClocks.entrySet().iterator().next();
}
activeClock = nextEntry.getValue();
if (activeClock.isStarted() == false) {
activeClock.start();
} else {
activeClock.resume();
}
}
}
}
