Question

我来自Ruby背景，所以有点麻烦尝试学习一些Javascript。我创建了一个名为Game的类，并将玩家数量插入其中。我有一个名为move的类的方法，它为玩家提供了一个移动。我遇到的麻烦是，如果我连续多次移动，每次运行方法时都会重置变量。

使用移动方法，我想跟踪当前玩家的移动情况，同时跟踪所玩的总骰子，无论移动的玩家是谁。

你有什么见解吗？非常感谢所有的帮助！感谢。

function Game(players) {
  _players = createPlayers(players);
  _total_dice = totalDice(players);

  this.move = function(id, dice, value) {
    current_player = _players[id - 1];
    current_player = { id: current_player.id, dice_middle: dice, value: value, dice_left: current_player.dice_left - dice }
    total_dice = _total_dice - dice;
  }
}


function createPlayers(amount) {
  var players = [];
  var player_count = new Array(amount).join().split(',').map(function(item, index){ return ++index; })

  for ( var i = 0; i < player_count.length; i++) {
    player = { id: i + 1, dice_middle: 0, value: 0, dice_left: 5 }
    players.push(player);
  }

  return players;
}

function totalDice(amount) {
  total = amount * 5;
  return total;
}

这就是我初始化Game并采取行动的方式。

var game = new Game(4);
game.move(1, 2, 3);
game.move(1, 1, 3);

每次移动，重新进入变量，所以在这个例子中，总骰子保持在20，并且玩家的移动不会“保存”。

Answer 1

函数只是函数，它们不像一个类。尝试使用ES6类，应该做你想做的事 - 下面的例子（未经测试）：

class Game {
   constructor(players) {
     this._players =  this.createPlayers(players);
     this._total_dice = this.totalDice(players)       
   }

   move (id, dice, value) {
     current_player = this._players[id - 1];
     current_player = { id: current_player.id, dice_middle: dice, value: value, dice_left: current_player.dice_left - dice }
     total_dice = this._total_dice - dice;
   }


   createPlayers(amount) {
     var players = [];
     var player_count = new Array(amount).join().split(',').map(function(item, index){ return ++index; })

     for ( var i = 0; i < player_count.length; i++) {
        player = { id: i + 1, dice_middle: 0, value: 0, dice_left: 5 }
        players.push(player);
     }

     return players;
  }


  totalDice(amount) {
     total = amount * 5;
     return total;
  }
}

Answer 2

你已写入内部移动功能

   this.move = function(id, dice, value) {
         total_dice = _total_dice - dice;
      }

如果我假设正确，则有一个拼写为total_dice，它应该是_total_dice。缺少“_”

多次使用方法时，要跟踪类中的变量

2 个答案: