public void updatePosition(long timePassed) {
			long secs = (timePassed+leftTime) / 1000;
			this.leftTime = (int)(timePassed - secs); //Shouldn't be more than 1000.
			speed += acceleration * secs;
			int dx = (int)(speed * secs);
			this.curPos.setX(curPos.getX()+dx);
		}