Question

我建立一个依靠通过在命中区域重复mouse_down来获得积分的游戏，但我希望玩家只有在hit是pressing的情况下才能获得积分活性。如果我没有收到语法错误，则不会发生任何事情。我知道代码错了。

我需要onPressing才能使onPressing成为真，然后触发noot，然后， mouse_over将var score:int = 0 score = 0; var pressing:Boolean = false; hit.addEventListener(MouseEvent.MOUSE_DOWN, maketrue); function maketrue(evt:Event){ pressing = true; trace("honk"); onPressing(); } } function onPressing(evt:Event){ if (pressing==true){ noot(); } } function noot(event:MouseEvent = null)// this should be mouse_over, gain points { score++; trace("Moused over"); trace("Score: " + score); }作为app.post('/doneList/:id',function(req, res){ var id = mongojs.ObjectId(req.params.id); var oneTodo; db.todoList.findAndModify( { "query": { "_id": id }, "remove": true }, function(err,doc) { if (doc) { db.doneList.insert(doc,function(err,doc){ // respond moved }); } else { // respond was not found } );触发，每个mouse_over都会记录一个得分点并跟踪它。

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Answer 1

要仅在触发另一个事件时才有事件，您需要一个简单的设置：

// In this example mouseOver event will only activate when mouseDown event has fired
// for the sake of simplicity this has been done in a frame, not in a class

import flash.display.Sprite;
import flash.events.MouseEvent;

var mySprite:Sprite = new Sprite(); // we'll use this as a button
mySprite.graphics.beginFill( 0xFF0000, 1);
mySprite.graphics.drawCircle( 0, 0, 50 );
mySprite.graphics.endFill();
mySprite.x = 50;
mySprite.y = 50;
mySprite.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDownHandler);
addChild(mySprite);

var myMouseOverSprite:Sprite = new Sprite(); // this sprite will be used to roll over the mouse on
myMouseOverSprite.graphics.beginFill(0x00FF00, 1);
myMouseOverSprite.graphics.drawCircle( 0, 0, 70 );
myMouseOverSprite.graphics.endFill();
myMouseOverSprite.x = 150;
myMouseOverSprite.y = 150;
addChild(myMouseOverSprite);


function onMouseDownHandler(e:MouseEvent):void
{
    trace("mouse is down on mySprite");
    myMouseOverSprite.addEventListener(MouseEvent.ROLL_OVER, onMouseRollOverHandler);
    stage.addEventListener(MouseEvent.MOUSE_UP, onStageMouseUpHandler); // this is important so we don't have roll over firing after mouse is up
}

function onStageMouseUpHandler(e:MouseEvent):void
{
    myMouseOverSprite.graphics.clear();
    myMouseOverSprite.graphics.beginFill( 0x00FF00, 1); // return sprite to original color
    myMouseOverSprite.graphics.drawCircle( 0, 0, 70 );
    myMouseOverSprite.graphics.endFill();
    myMouseOverSprite.removeEventListener(MouseEvent.ROLL_OVER, onMouseRollOverHandler);
}

function onMouseRollOverHandler(e:MouseEvent):void
{
    trace("mouse is rolling over myMouseOverSprite");
    myMouseOverSprite.graphics.clear();
    myMouseOverSprite.graphics.beginFill( Math.random() * int.MAX_VALUE >> 0, 1); // change sprite to a random color
    myMouseOverSprite.graphics.drawCircle( 0, 0, 70 );
    myMouseOverSprite.graphics.endFill();
}

在此示例中，您将看到两个圆圈。红色是一个按钮 - 当您按下它时，绿色圆圈将准备好接收ROLL_OVER事件。当你让鼠标再次上升时，绿色圆圈将返回到它的开始状态。

Answer 2

一些事情：

有一个额外的＆＃34;}＆＃34;在onPressing（）
onPressing（）需要一个参数 - 我建议＆＃34; evt＆＃34;

修复这些问题后，每次单击匹配符号时，跟踪都会起作用，并且分数会递增。

但是，为了达到你描述的效果，当用户按下鼠标按钮时鼠标悬停在命中区域上时，用户反复得分，我建议不要使用＆＃34;鼠标悬停＆＃34;。这是因为鼠标悬停只会在鼠标实际移动时触发。当用户在命中区域顶部滚动并停止时，它将不会触发Mouse Over事件。

我建议进行以下调整：

var score:int = 0
score = 0;
var pressing:Boolean = false;

//stage listens for mouse down
stage.addEventListener(MouseEvent.MOUSE_DOWN, maketrue);
function maketrue(evt:Event){
    pressing = true;
    trace("honk");
}

//stage listens for mouse up
stage.addEventListener(MouseEvent.MOUSE_UP, makefalse);

function makefalse(evt:Event){
    pressing = false;
    trace("unhonk");
}

hit.addEventListener(Event.ENTER_FRAME, checkCollision);

function checkCollision(evt:Event):void{
    //pseudocode
    /*
    if(hitting cursor) && pressing){
        score++;
        trace("Score: " + score);
    }
    */
}

如何在mouse_down事件处于活动状态时触发mouse_over事件？

2 个答案: