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Archive for September, 2010:

Trace MovieClips Under Mouse

Actionscript 3 | Posted on Sep 15 2010

This is handy for those times when something is blocking a mouse action and you need to see what is under your mouse.

import flash.geom.Point;
stage.addEventListener (MouseEvent.CLICK, _checkMouseEventTrail, false, 0, true);
function _checkMouseEventTrail ($e:MouseEvent):void
{

        var pt:Point = new Point (mouseX, mouseY);
    var objects:Array = this.getObjectsUnderPoint (pt);
    for (var i:int = 0; i< objects.length; i++)
    {
        trace(">>", objects[i].name,": ",objects[i]);
    }

    var p:* = $e.target;
    while (p)
    {
        trace(">>", p.name,": ",p);
        p = p.parent;
    }
};
1 Comment

Global vars in AS3

Actionscript 3 | Posted on Sep 15 2010

Found a solution to store variables in a class file that all other classes can access.

// make a class called GlobalVars.as and put inside com folder
package com
{
    public class GlobalVars
    {
        public static var vars:Object = {};
    }
}

// then in your other classes
import com.GlobalVars;
GlobalVars.vars.whatever = "something to store"

// then in any other class just do your import of com.GlobalVars, then:
trace (GlobalVars.vars.whatever) // returns "something to store"
2 Comments

AS3 Odd or Even

Actionscript 3 | Posted on Sep 15 2010

A function to check a number is odd or even which return true is even and false is odd.

function isEven(num)
{
    // if(num % 2 == 0){return true;}else{return false;} //<–old
    return !(num%2);//shorter
    // return !(num & 1);//seems the fastest one
}

trace(isEven(2));//–> true
trace(isEven(3));//–> false
0 Comments

Track Flash in Google Analytics using GAforFlash

Actionscript 3 | Posted on Sep 15 2010

GA for flash component enables you to easily make calls directly from your ActionScript code in order to track pageviews, events, conversions, etc.

// For Google Analytics tracking to work you need to link
// to the following two SWC files in Flash CS4 and above ...
// 'analytics.swc' and 'analytics_flash.swc'
// Download them from here http://code.google.com/p/gaforflash/
import com.google.analytics.GATracker;
import com.google.analytics.AnalyticsTracker;

var tracker:AnalyticsTracker;

//GATracker(display:DisplayObject, account:String, mode:String = "AS3", visualDebug:Boolean = false, config:Configuration  = null, debug:DebugConfiguration  = null);
tracker = new GATracker(this, "UA-XXXXXXX-X", "AS3", true);

// Google Analytics Event Tracking Example
// trackEvent(category:String, action:String, label:String = null, value:Number);
tracker.trackEvent("MyProject", "ButtonClicked", "HomeButton");

tracker.trackPageview("Home/Click/Start");
0 Comments

AS3 Math

Actionscript 3 | Posted on Sep 15 2010

A very useful reminder for Math function.

n = Math.random();
// 0 <= n < 1

n = Math.round(x);
// rounds x to the closest integer

n = Math.floor(x);
// rounds x downwards to the closest integer

n = Math.ceil(x);
// rounds x upwards to the closest integer

n = Math.round(Math.random()*10);
// 0 <= n <= 10

n = Math.ceil(Math.random()*10);
// 1 <= n <= 10

n = Math.floor(Math.random()*10);
// 0 <= n <= 9

n = Math.random()*10 + 5;
// 5 <= n <= 15

n = Math.round(Math.random())*2 - 1;
// n will randomly be -1 or 1
0 Comments