ActionScript 3 Working with Timers Random timer example
Example
package {
import flash.events.TimerEvent;
import flash.events.TimerEvent;
import flash.utils.Timer;
public class RandomTimer extends Timer {
public var minimumDelay:Number;
public var maximumDelay:Number;
private var _count:uint = 0;
private var _repeatCount:int = 0;
public function RandomTimer(min:Number, max:Number, repeatCount:int = 0) {
super(delay, repeatCount);
minimumDelay = min;
maximumDelay = max;
_repeatCount = repeatCount;
}
override public function start():void {
delay = nextDelay();
addEventListener(TimerEvent.TIMER, timerHandler);
super.start();
}
private function nextDelay():Number {
return (minimumDelay + (Math.random() * (maximumDelay - minimumDelay)));
}
override public function stop():void {
removeEventListener(TimerEvent.TIMER, timerHandler);
super.stop();
}
protected function timerHandler(event:TimerEvent):void {
_count++;
if ((_repeatCount > 0) && (_count >= _repeatCount)) {
stop();
dispatchEvent(new TimerEvent(TimerEvent.TIMER_COMPLETE));
}
delay = nextDelay();
}
override public function reset():void {
_count = 0;
super.reset();
}
}
}
This RandomTimer extends Timer, and is used exactly the same, except that it dispatches at random intervals.
Example usage, dispatching randomly between 1 and 5-seconds:
var t:int = getTimer();
var timer:RandomTimer = new RandomTimer(1000, 5000);
timer.addEventListener(TimerEvent.TIMER, timerHandler);
timer.start();
function timerHandler(event:TimerEvent):void {
trace("Time since last dispatch: " + (getTimer() - t));
t = getTimer();
}
Above example would output:
[trace] Time since last dispatch: 1374
[trace] Time since last dispatch: 2459
[trace] Time since last dispatch: 3582
[trace] Time since last dispatch: 1335
[trace] Time since last dispatch: 4249
