games.java

一个java的游戏程序

class Games 
{
    private Game _games[];
    private int _last;
    private int _current;
    private int _max;

    public Games()
    {
	_max = 4;
	_last = 0;
	_current = -1;
	_games = new Game[_max];
    }

    public Game getCurrent()
    {
	if(_current == -1)
	    return null;
	else
	    return _games[_current];
    }

    public void add(Game game)
    {
	if(_last < _max) 
	    {
		_games[_last++] = game;
	    }
    }

    public boolean isCurrent(String name)
    {
	return (getCurrent() != null) && (getCurrent().getName() == name);
    }

    public Game select(String name)
    {
	int i;
	for(i = 0; i < _max; i++)
	    {
		if(_games[i] != null && name.equals(_games[i].getName()))
		    {
			_current = i;
			return _games[_current];
		    }
	    }
	Game g = createGame(name);
	if(g != null)
	    {
		add(g);
		_current = _last - 1;
	    }
	return g;	    
    }

    public Game createGame(String name)
    {
	if(name == "TicTacToe")
	    {
		return new Game();
	    }
	else
	    {
		System.out.println("no such game: " + name);
		return null;
	    }
    }

}