星际争霸之php正面模式
星际里面的战斗都是在地图上进行的,只要我们可以编辑地图,就可以创造一些新的战役。可是,星际里面的地图绘制相关的代码如果开放出来,估计大多数万家都看不懂,更不要说自己编辑地图了。
待解决的问题:在不了解地图代码的结构下,我们要让玩家自己编辑地图。
思路:对于玩家而言,他熟悉的是水晶矿,高地这些形状,他和系统通过鼠标交互。我们可以设计一个地图编辑器让玩家使用,而无需让他研究绘制地图的细节代码。(实际上暴雪公司就是这样做的,很多玩家甚至暴雪内部人员都是用星际中的地图编辑器制作地图)
正面模式(Facade)示例:
<?php //玩家的鼠标对象,记录鼠标在编辑其中的状态 class mouse { //鼠标所处的X轴坐标 public static $X; //鼠标当前能绘制的对象,比如水晶矿,河流等 public static $object; //鼠标所处的Y轴坐标 public static $Y; } //地图编辑器 class mapEdit { //绘制方法 public static function draw() { //根据鼠标对象的状态在地图上绘制各种东西 //如果是水晶矿 if(mouse::$object == "ore") { //调用水晶矿类的绘制方法,这个类定义在下面,这是真正的绘制,但玩家不必学习他的细节 ore::draw(); //如果是河流 }elseif(mouse::$object == "river"){ //调用河流类的绘制方法,这个类定义在下面,这是真正的绘制,但玩家不必学习他的细节 river::draw(); } } } //水晶矿类 class ore { //剩余的矿,以及其他属性,这里略过 public $remain; //绘制水晶矿 public static function draw() { //实际的绘制水晶矿的底层细节代码 } } //河流类 class river { //绘制河流 public static function draw() { //实际的绘制河流的底层细节代码 } } //玩家在地图编辑器上点击绘制对象列表上的水晶矿对象 mouse::$object = "ore"; //玩家移动鼠标 mouse::$X = 311; mouse::$Y = 126; //在地图上点击,表示绘制当前对象,也就是一个水晶矿 mapEdit::draw(); ?>
用途总结:正面模式让使用者集中于他所要进行的工作,而不必知道全部细节,或者说提供了一个容易使用的工具,同时屏蔽了底层细节,不必让使用者重新学习。
实现总结:需要一个类似上面地图编辑器的代码类,帮助玩家方便的进行操作。

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