public class PuckSupply{
	protected int maxPucks;
	protected int usedPucks;
	protected PlayingField fieldPtr;

	public PuckSupply(PlayingField field){
		maxPucks = 3;
		usedPucks = 0;
		fieldPtr = field;
	}

	public int numberLeft(){
		return maxPucks - usedPucks;
	}

	public Puck getPuck() throws OutOfPucksException{
		if(usedPucks < maxPucks){
			usedPucks = usedPucks + 1;
			return new Puck(fieldPtr);
		}
		else{
			throw new OutOfPucksException();
		}
	}



};