AS3: Quality

[LesPaulPlayer]

Ah Ese Tres: Main

// In this tutorial, I am going to explain how to toggle quality using AS3
// Its very simple. What you need to do is access a property of stage. and set it
// to be equal to a property of StageQuality
stage.quality = StageQuality.HIGH
stage.quality = StageQuality.MEDIUM
stage.quality = StageQuality.LOW
// alternatively
stage.quality = "high"
stage.quality = "medium"
stage.quality = "low"
// easy, yes, and fairly obvious is you understand the difference between AS2 and
// AS3.

[hashbrown]

sorry to bump, but can you tell us about automatically changing the quality due to the fps and laggnes, that would be much more helpful

[Madferit]

I haven't tried this but if you do an if statement to check if the stage.frameRate is low, then set the quality.

[reality-monkey]

and is there a way to set frames to change quality on there own?

[GustTheASGuy]

On their own what? Add code to change the quality in the frames.

[Kuoke]

I think he means the AS3 equivilant of the AS2:
_quality = "autohigh"

[AAF]

and do u need to add buttons or something? or do u just put this on a frame

[GustTheASGuy]

This merely explains the usage of the property, you need to implement it on your own. Can you please make the effort of doing as much yourself?

[Paranoia]

I take it this was posted before code tags :P

Anyway, I'll just elaborate since this isn't enough of an addition to warrant its own tutorial. If you want that old favourite of a quality toggle button, here's one way of doing it:

var qual:uint = 2;

// add your own event listener for the toggle event
// for a specific key press, you'll need to add a line or two of code in the function to find the key
// e.g. if(ev.keyCode == blah){

function toggleEvent(ev:* = null):void{
  qual = (qual + 1) % 3;
  if(qual == 0){
    stage.quality = StageQuality.LOW;
  }
  else if(qual == 1){
    stage.quality = StageQuality.MEDIUM;
  }
  else{
    stage.quality = StageQuality.HIGH;
  };
  //  you can use case, switch and break for this if you prefer.  I'm not clear on which is faster,
  //  but for an occasionally called event like this the difference will be negligible anyway
};

[coolroy]

At 5/9/07 12:19 AM, hashbrown wrote: sorry to bump, but can you tell us about automatically changing the quality due to the fps and laggnes, that would be much more helpful

I tried it too, to auto toggle quailty due to lag but each time it auto toggles takes about a sec or two and it's not worth it compared to the lag, it looks even more laggy when it toggles each sec (from experience, just let the people toggle for themselves, I can give you the code if you'd like but I don't recommend...).

[freechips1]

Would this work to auto toggle the quality?

stage.quality = StageQuality.MEDIUM;

var sfr:Number = stage.frameRate;
var buffer:Number = 5;

stage.addEventListener(Event.ENTER_FRAME,quality);

function quality(event:Event):void {
	if (stage.frameRate <= sfr - buffer) {
		stage.quality = StageQuality.LOW;
	}
        if ((stage.frameRate > sfr - buffer) && (stage.frameRate < sfr + buffer)) {
		stage.quality = StageQuality.MEDIUM;
	}
	if (stage.frameRate >= sfr + buffer) {
		stage.quality = StageQuality.HIGH;
	}
	if (stage.frameRate >= sfr + buffer * 1.5) {
		stage.quality = StageQuality.BEST;
	}
}

Seems kind of long-winded though...

[D4rkm3ch]

//Default quality is Best and for this file its frame rate is 24. You can chose any numbers you want below
//When framerate is less than or equal to 14 make quality LOW
//When framerate is in between 15 and 19 INCLUDING 15 and 19 make quality MEDIUM
//When framerate is in between 20 and 23 INCLUDING 20 and 23 make quality HIGH
//If the framerate isn't under the above criteria (max frame rate) make quality BEST

var sfr:Number=stage.frameRate;

stage.quality=StageQuality.BEST;

stage.addEventListener(Event.ENTER_FRAME , quality);
function quality(event:Event):void {
trace(stage.quality);
if (stage.frameRate<=sfr-10) {
stage.quality=StageQuality.LOW;
} else if ((stage.frameRate>=sfr-9)&&(stage.frameR ate<=sfr-5)) {
stage.quality=StageQuality.MEDIUM;
} else if ((stage.frameRate>=sfr-4)&&(stage.frameR ate<=sfr-1)) {
stage.quality=StageQuality.HIGH;
} else {
stage.quality=StageQuality.BEST;
}
}

[henke37]

stage.frameRate is not changed by the player. It is the set goal framerate. Unless you assign to it, it's a constant. So yeah, nice work guys. Nice work indeed.