php设计模式之策略模式实例分析【星际争霸游戏案例】

<?php
  //玩家的类
  class player
  {
    //所属种族
    public $race;

    //部队
    public $army;

    //建筑
    public $building;

    //人口供给
    public $supply;

    //构造函数，设定所属种族
    public function __construct($race)
    {
      $this->race = $race;
    }
  }

  //初始化的接口
  interface initialPlayer 
  {
    //制造初始化的部队
    public function giveArmy($player);

    //制造初始化的建筑
    public function giveBuilding($player);

    //初始化人口供给
    public function giveSupply($player);
  }

  //虫族的初始化算法
  class zergInitial implements initialPlayer 
  {
    //制造初始化的部队
    public function giveArmy($player)
    {
      //一个Overlord
      $player->army[] = new Overlord();

      //四个虫族农民
      for($i=0; $i<4;$i++)
      {
        $player->army[] = new Drone();
      }
    }

    //制造初始化的建筑
    public function giveBuilding($player)
    {
      //一个基地
      $player->building[] = new Hatchery();
    }

    //初始化人口供给
    public function giveSupply($player)
    {
      //虫族初始人口供给为9
      $player->supply = 9;
    }
  }

  //人族的初始化算法
  class terranInitial implements initialPlayer 
  {
    //制造初始化的部队
    public function giveArmy($player)
    {
      //四个人族农民
      for($i=0; $i<4;$i++)
      {
        $player->army[] = new SVC();
      }
    }

    //制造初始化的建筑
    public function giveBuilding($player)
    {
      //一个基地
      $player->building[] = new Hatchery();
    }

    //初始化人口供给
    public function giveSupply($player)
    {
      //人族初始人口供给为10
      $player->supply = 10;
    }
  }

  //初始化的控制类
  class initialController 
  {
    //构造函数，参数为玩家的数组
    public function __construct($playerArray)
    {
      foreach ($playerArray as $player)
      {
        switch ($player->race)
        {
          case 'zerg':
            $initialController = new zergInitial();
            break;
          case 'terran':
            $initialController = new terranInitial();
            break;
        }

        $initialController->giveArmy($player);
        $initialController->giveBuilding($player);
        $initialController->giveSupply($player);
      }
    }
  }

  //假设两个虫族，一个人族
  $playerArray = array(
    new player('zerg'), 
    new player('zerg'), 
    new player('terran'),
  );

  //进行初始化工作
  $initialController = new initialController($playerArray);
?>