Question

我有什么：

买家类。买方类的对象是根据游戏时间生成的，并存储在数组中：买方。
商店课程。 Shop类的对象是在程序开始时生成的。
活动＆＃34;分配活动＆＃34;这使＆＃34; shoppingBuyer＆＃34;买方类型的Shop Object。

我想做的事情：

当我们点击买家时，如果买家2的条件已满，则1. y> = 377或者已成为= = true，则选择买方并将其保存到买方的selectedBuyer变量中。

之后，当我点击商店时，如果商店的买家对象＆＃34; shoppingBuyer＆＃34;为null，选定的买方被指定为shoppingBuyer并运行计时器。否则显示消息不会发生。

当计时器结束时，启动一个功能＆＃34; shopGetOut＆＃34;它允许买方离开商店并使购买者的商店和商店的买主无效，并以这样的方式重置商店，使其现在也可以被其他买方对象所接受。

我收到错误的地方

最初，一切都很好。但是随着越来越多的买家对象被包含在内，不知何时购物者没有被分配并保持为空，但这并不是所有时间都只发生过几次。

跟踪/访问specefic Shop对象的shoppingBuyer时出错：

TypeError：错误＃1009：无法访问空对象引用的属性或方法。在FashionFrenzy / shopGetOut（）在flash.events::EventDispatcher/dispatchEventFunction（） at flash.events::EventDispatcher/dispatchEvent(）在Shop / addTime（）在flash.utils :: Timer / _timerDispatch（）在flash.utils :: Timer / tick（）

当它跟踪商店的displayAll（）时这样：

正确显示：店铺名称：上衣购物买家：null

错误显示：商店名称：电影 TypeError：错误＃1009：无法访问空对象引用的属性或方法。在FashionFrenzy / shopGetOut（）在flash.events::EventDispatcher/dispatchEventFunction（） at flash.events::EventDispatcher/dispatchEvent(）在Shop / addTime（）在flash.utils :: Timer / _timerDispatch（）在flash.utils :: Timer / tick（）

有时甚至商店名称也没有跟踪

我的代码：

我的职能：

点击商店时：

public function shopselected(event: SelectEvent): void {



  if (SelectedBuyer != null) { //checks if we actually selected a buyer before we clicked a shop

    if (SelectedBuyer.previousShop == event.selectedshop) {
      trace("You just went in there"); // this is to not let a buyer enter the same shop they have been before to.

    } else {
      SelectedBuyer.currentShop = event.selectedshop; // changes the current shop which was previously null to the shop they are in right now

      SelectedBuyer.shopping = true;  
      SelectedShop = event.selectedshop; // the clicked shop becomes selected shop
      trace(SelectedShop.ShopName);

      if (SelectedShop.ShoppingBuyer == null && SelectedShop.ShopName != "Counter") { //check if someone is already shopping in that shop or if it's the counter
        SelectedShop.ShoppingBuyer = SelectedBuyer;

        SelectedShop.InWork(); // this starts a timer of the shop and when desired timer is reached, it dispatches the ShopOverEvent which runs the function  shopGetOut.

        if (SelectedBuyer.enteredMall == true) {

          dispatchEvent(new AssignEvent(AssignEvent.MIDDLE, SelectedBuyer.previousShop.ShopNumber)); //this has nothing to do with my probelm
        } else {
          dispatchEvent(new AssignEvent(AssignEvent.ENTRY, SelectedBuyer.laneNo)); //this has nothing to do with my probelm
        }

        SelectedBuyer.enteredMall = true;
        SelectedBuyer.x = SelectedShop.Displayart.x + 20;
        SelectedBuyer.y = SelectedShop.Displayart.y - 20;










      } else { //this all is working fine from here.
        if (SelectedShop.ShopName == "Counter") {
          SelectedBuyer.x = SelectedShop.Displayart.x + 20;
          SelectedBuyer.y = SelectedShop.Displayart.y - 20;
          if (SelectedBuyer.enteredMall) {
            dispatchEvent(new AssignEvent(AssignEvent.MIDDLE, SelectedBuyer.previousShop.ShopNumber));
          } else {
            dispatchEvent(new AssignEvent(AssignEvent.ENTRY, SelectedBuyer.laneNo));
          }

          removeChild(SelectedBuyer);
        } else {
          trace("Someone is already there");
        }


      }
    }
    removeChild(SelectBuyerOverlay);
  } else {
    trace("Please Select a Buyer first");
  }
  SelectedBuyer = null;
  SelectedShop = null;

}

在买家购物的时候商店的计时器达到限度的时候：

public function shopGetOut(event: ShopOverEvent): void {


  event.shopEnd.shopTimer.stop(); // the timer which was started is set off.
  event.shopEnd.ShoppingBuyer.y += 80; // the buyer is shifted out of the shop
  event.shopEnd.ShoppingBuyer.shopping = false; // buyer is no longer shopping 
  event.shopEnd.ShoppingBuyer.previousShop = event.shopEnd; //current shop is made previous shop 
  event.shopEnd.ShoppingBuyer.currentShop = null; // current shop is made null

  dispatchEvent(new AssignEvent(AssignEvent.MIDDLE, event.shopEnd.ShopNumber)); // this nullifies previous shop nothing to do with my problem 

  event.shopEnd = null; 


}

如果我能用更好更简单的代码做同样的事情而不会出现错误，我会很高兴。

AS3中函数的逻辑由于未知原因而给出错误

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