protected void controlTransform(int kc) {
		if (kc == forwardKey) {
			moveUp();
		} else {
			if (kc == backKey) {
				moveDown();
			} else {
				if (kc == leftKey) {
					rollLeft();
				} else {
					if (kc == rightKey) {
						rollRight();
					}
				}
			}
		}
	}