Question

我正在为一个班级构建一个简单的Flash游戏。我想要达到二级但似乎无法使敌人独立爆炸。我使用实例名称生成了enemy2，enemy3，enemy4和enemy5符号。为了以防万一，我还做了一个单独的玩家。下面的代码是播放器的框架。任何建议都将不胜感激。

onClipEvent(load) {
    var shipSpeed:Number = 15;
    var rotationSpeed:Number = 15;
    var missileNum:Number = 0;
    var missile:Array = new Array();
    var missleSpeed:Number = 20;
}



onClipEvent (enterFrame) {
if(Key.isDown(Key.LEFT)) {
    _rotation -= shipSpeed;
}

if(Key.isDown(Key.RIGHT)) {
    _rotation += shipSpeed;
}

var radian:Number = (-1 * _rotation + 90) * Math.PI/180;

if(Key.isDown(Key.UP)) {
    _x += shipSpeed * Math.cos(radian);
    _y -= shipSpeed * Math.sin(radian);
}

if(Key.isDown(Key.DOWN)) {
    _x -= shipSpeed * Math.cos(radian);
    _y += shipSpeed * Math.sin(radian);
}


// keeps player in the frame    
if(this._x >= 800)  this._x = 11;
if(this._x <= 10)  this._x = 799;
if(this._y >= 600)  this._y = 11;
if(this._y <= 10)  this._y = 599;




 if(this.hitTest(_root.enemy2))
 {
    _root.player2.play ();
 }

if(this.hitTest(_root.enemy3))
 {
    _root.player2.play ();
 }

 if(this.hitTest(_root.enemy4))
 {
    _root.player2.play ();
 }

 if(this.hitTest(_root.enemy5))
 {
    _root.player2.play ();
 }

//Shoot missile in direction the ship is facing
if(Key.isDown(Key.SPACE)) {
    missile[missileNum] = _root.attachMovie("missile","missile"+missileNum,_root.getNextHighestDepth(),{_x:_x,_y:_y,_rotation:_rotation});
    missile[missileNum].ySpeed = Math.sin(radian)*missleSpeed;
    missile[missileNum].xSpeed = Math.cos(radian)*missleSpeed;
    missile[missileNum].onEnterFrame = function() {
        if(this.hitTest(_root.enemy2)) {
            _root.enemy2.play ();}


        if(this.hitTest(_root.enemy3)) {
            _root.enemy3.play ();}

    if(this.hitTest(_root.enemy4)) {
        _root.enemy4.play();}

    if(this.hitTest(_root.enemy5)) {
        _root.enemy5.play();}

           // this.attachMovie("enemy", "enemy", 3 );
        }
        this._y -= this.ySpeed;
        this._x += this.xSpeed;
        trace("missile: " + missileNum);
        if(0 > this._x || this._x > 800 || 0 > this._y || this._y > 600)
            this.removeMovieClip();
    }
    missileNum++;
}
}

Answer 1

您肯定需要学习如何正确缩进代码。如你所见，它不仅导致混乱，还导致许多错误。

问题在于这部分代码

    this._y -= this.ySpeed;
    this._x += this.xSpeed;
    trace("missile: " + missileNum);
    if(0 > this._x || this._x > 800 || 0 > this._y || this._y > 600)
        this.removeMovieClip();

不在missle的onEnterFrame事件监听器中。移动迷路}大括号下面这段代码。也可以将missleNum++部分放在1括号

之上换句话说，改变这个：

       // this.attachMovie("enemy", "enemy", 3 );
    }
    this._y -= this.ySpeed;
    this._x += this.xSpeed;
    trace("missile: " + missileNum);
    if(0 > this._x || this._x > 800 || 0 > this._y || this._y > 600)
        this.removeMovieClip();
}
missileNum++;

进入这个：

       // this.attachMovie("enemy", "enemy", 3 );
    this._y -= this.ySpeed;
    this._x += this.xSpeed;
    trace("missile: " + missileNum);
    if(0 > this._x || this._x > 800 || 0 > this._y || this._y > 600)
        this.removeMovieClip();

    }

missileNum++;
}

此外，您提供的代码似乎在代码末尾包含2个不必要/未使用的}括号。

让我给你完整，正确缩进“导弹”部分：

if(Key.isDown(Key.SPACE)) {
    missile[missileNum] = _root.attachMovie("missile","missile"+missileNum,_root.getNextHighestDepth(),{_x:_x,_y:_y,_rotation:_rotation});
    missile[missileNum].ySpeed = Math.sin(radian)*missleSpeed;
    missile[missileNum].xSpeed = Math.cos(radian)*missleSpeed;

    missile[missileNum].onEnterFrame = function() {
      if(this.hitTest(_root.enemy2)) {
        _root.enemy2.play ();}

      if(this.hitTest(_root.enemy3)) {
        _root.enemy3.play ();}

      if(this.hitTest(_root.enemy4)) {
        _root.enemy4.play();}

      if(this.hitTest(_root.enemy5)) {
          _root.enemy5.play();}

      // this.attachMovie("enemy", "enemy", 3 );

      this._y -= this.ySpeed;
      this._x += this.xSpeed;
      trace("missile: " + missileNum);
      if(0 > this._x || this._x > 800 || 0 > this._y || this._y > 600)
          this.removeMovieClip();
    }//end of the missle's onEnterFrame

    missileNum++;
}//end of the Key.isDown

另一个建议我会把你的敌人放在一个阵列中，让我们在开始时说“敌人”

 var enemies:Array = new Array(); //initiate them now or later

然后你可以把敌人推进去，就像你对导弹一样 enemies.push（_root.some_newly_created_enemy）;

然后再做

foreach(enemy in enemies){
  if(this.hitTest(enemy)) {
    enemy.play();}
}

而不是逐个静态地检查它们

有多个敌人的问题，如果被导弹击中就会玩

1 个答案: