php Flyweight享元模式使用例子

//机枪兵享元

class MarineFlyweight

{

  //绘制机枪兵的图像动画，参数为状态，比如属于哪一个玩家

  public function drawMarine($state)

  {

  //绘制机枪兵

  }

}

//享元工厂

class FlyweightFactory

{

  //享元数组，用于存放多个享元

  private $flyweights;

  //获取享元的方法

  public function getFlyweight($name)

  {

    if (!isset($flyweights[$name]))

    {

      $flyweights[$name] = new $name."Flyweight";

    }

    return $flyweights[$name];

  }

}

//初始化享元工厂

$flyweightFactory = new FlyweightFactory();

//当我们需要绘制一个机枪兵的时候，同时传递一个状态数组，里面包含剩余的血等等

$marine = $flyweightFactory->getFlyweight("Marine");

$marine->drawMarine($status);

?>