我的变量不会递增

Question

我的代码：

import flash.utils.Timer;
import flash.events.KeyboardEvent;
import flash.events.Event;
var tid:Timer = new Timer(5000);
var rightArrow:Boolean;
var leftArrow:Boolean;
var upArrow:Boolean;
var downArrow:Boolean;
var speed:int = 10;
var score:int = 0

tid.addEventListener(TimerEvent.TIMER, flyttRandom);
stage.addEventListener(KeyboardEvent.KEY_DOWN, keyPressed);
stage.addEventListener(KeyboardEvent.KEY_UP, keyReleased);
stage.addEventListener(Event.ENTER_FRAME, everyFrame);

txtScore.text = score.toString();

function flyttRandom (evt:TimerEvent):void
    {
    troll.x = Math.random() * (550 - 0) + 0;
    troll.y = Math.random() * (350 - 0) + 0;
    }
tid.start();
function keyPressed(event:KeyboardEvent):void 
    {
if (event.keyCode == Keyboard.RIGHT)
    {
    rightArrow = true;
    }
if (event.keyCode == Keyboard.LEFT) 
    {
    leftArrow = true;
    }
if (event.keyCode == Keyboard.UP) 
    {
    upArrow = true;
    }
if (event.keyCode == Keyboard.DOWN) 
    {
    downArrow = true;
    }   
if (meg.hitTestObject(troll) == true)
    {
    score = score+1;
    troll.x = Math.random() * (550 - 0) + 0;
    troll.y = Math.random() * (350 - 0) + 0;
    }   
}
function keyReleased(event:KeyboardEvent):void 
{
if (event.keyCode == Keyboard.RIGHT) 
    {
    rightArrow = false;
    }
if (event.keyCode == Keyboard.LEFT) 
    {
    leftArrow = false;
    }
if (event.keyCode == Keyboard.UP) 
    {
    upArrow = false;
    }
if (event.keyCode == Keyboard.DOWN) 
    {
    downArrow = false;
    }
}
function everyFrame(event:Event):void 
{
if (rightArrow) 
    {
    meg.x += speed;
    }
if (leftArrow) 
    {
    meg.x -= speed;
    }
if (upArrow) 
    {
    meg.y -= speed;
    }
if (downArrow) 
    {
    meg.y += speed;
    }
}

因此，我试图在flash中创建这个简单的游戏，每当对象"meg"击中对象"troll"时，变量得分就会增加1，我的代码运行得很好，没有错误，但我的问题是，当它们击中时，变量不会增加。看到我已经尝试了一段时间，但没有成功，而且我的技能很低，我就不知所措了。

Answer 1

您有兴趣看到"txtScore"中的增量吗？看起来你只设置了一次TextField，但当分数增加时永远不会重置它。

尝试：

if (meg.hitTestObject(troll) == true)
{
    score = score+1;
    txtScore.text = score.toString();           // show the new score
    troll.x = Math.random() * (550 - 0) + 0;
    troll.y = Math.random() * (350 - 0) + 0;
}