Question

我正在尝试创建一个简单的游戏，船只通过键在左右之间移动。移动是好的，但是当我尝试检测左边的右端时它根本不起作用。以下是代码的一部分。可能有什么不对？


    stage.addEventListener(Event.ENTER_FRAME,moveBoat);

function moveBoat(event:Event):void {
if(! boat.x >= 700){

 if(moveLeft) {
  boat.x -= 5;
  boat.scaleX = 1;
 }
 if (moveRight) {
  boat.x += 5;
  boat.scaleX = -1;
 }


}
}

Answer 1

如果你已经解决了碰撞问题，那么这就是你投掷炸弹问题的答案。通过拥有5个布尔变量来实现它将是一种相当复杂的方法;相反，只需使用一个整数来记录你的船只有多少炸弹掉落，每次掉落一个，将这个值减少1.以下是一些示例代码：

//Create a variable to hold the number of bombs left.
var bombsLeft:int = 5;

//Create an event listener to listen for mouse clicks; upon a click, we'll drop a bomb.
addEventListener(MouseEvent.CLICK, dropBomb);

//The function dropBomb:
function dropBomb(event:MouseEvent):void
{
    if (bombsLeft > 0)
    {
       //Create a new instance of the Bomb class; this could be an object in your Library (if you're using the Flash IDE), which has a graphic inside it of a bomb.
       var newBomb:Bomb = new Bomb();
       //Position the bomb.
       newBomb.x = boat.x;
       newBomb.y = boat.y;
       //Add it to the stage
       addChild(newBomb);
       //Reduce the number of bombs you have left.
       bombsLeft--;
    }
    //At this point you could check if bombsLeft is equal to zero, and maybe increase it again to some other value.
}

这不包括向下移动炸弹的代码，但你可以相当简单地使用更新循环。如果你正在努力做到这一点，请告诉我，我会给你另一个例子。

希望有所帮助。

得不

检测位置？

1 个答案: