private void setCurrentBallStartingPosition() {
		firedBall.setPosChange(4, 4);
		switch (setCannon) {
		case 0: firedBall.setPos(118, 18); break;
		case 1: firedBall.setPos(635, 18); break;
		case 2: firedBall.setPos(635, 535); break;
		case 3: firedBall.setPos(118, 535); break;
		}
	}