javascript - OO Javascript Game，如何将玩家添加到游戏的玩家数组中？

Question

这是一个非常简单的面向对象的 JavaScript 游戏的开始。我在将玩家添加到 Games Players[] 数组时遇到问题。如何做到这一点？

我删除了所有与问题无关的代码

var BobsGame = function(){
this.Players = [];
}

BobsGame.prototype.addPlayer = function(Player){
//not working
Player.Game = this;
this.Players.push(Player);
Player.setId = function(this.Players.length) {
    return this.Players.length;
}
return this;
}

var Player = function(name){
this.Game = null;
this.score = 0;
this.name = name;
this.id = null;
//  return alert('Player ' + this.name + ' has been created');
}

var myGame = new BobsGame();

var Player1 = new Player("Tom");
var Player2 = new Player("Bob");

myGame.addPlayer(Player1); 

Answer 1

我认为你正在尝试:

var BobsGame = function () {
    this.Players = [];
};

BobsGame.prototype.addPlayer = function (Player) {
    this.Players.push(Player);
    Player.id = this.Players.length;
    return this;
};

var Player = function (name) {
    this.score = 0;
    this.name = name;
    this.id = null;
    //  return alert('Player ' + this.name + ' has been created');
};

var myGame = new BobsGame();

var Player1 = new Player("Tom");
var Player2 = new Player("Bob");

myGame.addPlayer(Player1);

错误出现在以下代码中:

Player.setId = function(this.Players.length) {
    return this.Players.length;
}

在这里，您尝试创建一个名为 setId 的函数，但您无法定义 this.Players.length作为一个论点。因此，假设您尝试将玩家的 id 设置为玩家数组的长度，您可以像这样简单地分配它:

Player.id = this.Players.length;

顺便说一句，我建议您不要调用 addPlayer 的参数“Player ”，因为这将隐藏已定义的函数 Player 。您可能想将其重命名为“player ”。