Action on a list of objects

[lemiran]

Hi there

I was used to play with Flash several years ago and today i'm trying to create some funny staff in order to learn AS3 and Animate basics.

I have a "truck" movie clip on my scene. This movie clip has a stop(); action on the first frame and a gotoAndPlay(2); on the last frame of its timeline.

When the global timeline plays i wrote this code in order to get the truck bigger and to get it play if the truck's x is greater than 300.

I have 3 questions:

1 -  is it possible to simplify my code specify x > 300 and < 900

2 - is it possible to scale x and y in the same time (rather than scaleX and scaleY)

3 - I would like to apply this code to several other movie clips, is there a way to for example list my objects and then apply my code to all this objects

addEventListener(Event.ENTER_FRAME, transform_objects);

function transform_objects(event:Event):void
{

	truck.x += 5;
	if(truck.x >= 1400){
		truck.x = -150;
	}
if(truck.x >= 300){
		truck.play();
	truck.scaleX = 1.4;
	truck.scaleY = 1.4;
	truck.alpha = 1;
}
if(truck.x >= 900){
		truck.gotoAndStop(1);
	truck.scaleX = 1;
	truck.scaleY = 1;
	truck.alpha = 0.16;
}
}

Thank you very much for your help

Regards

Miran

[kglad]

you could use:

addEventListener(Event.ENTER_FRAME, transform_objects);

function transform_objects(event:Event):void
{

truck.x += 5;
if(truck.x >= 1400){
truck.x = -150;
}
if(truck.x >= 300 && truck.x <= 900){  // note: your previous code was incorrect (or your q 1 was)
truck.play();
truck.scaleX = 1.4;  // see below
truck.scaleY = 1.4;  // you could use truck.scaleX = truck.scaleY = 1.4, but that's not really a simplification
truck.alpha = 1;
}
}

[lemiran]

Hi kglad

Thank you very much for your reply.

I coorrected the error, you are right!

The simplification is indeed very usefull as i can change in the future this value for both (x and y) at the same time.

So is there a trick to apply this code (transform the object if its x is between 300&900) to several objects.

I tought that it would be possible to say to animate :

Here is my list of objects : A,B,C,D,E...)

If any of my objects is in a particular x position, then transform it

[kglad · Accepted solution]

if there are more than say 3 object, and they're going to be treated as a group in code (ie, when one undergoes a property change, the others will too), it's easier to use and maintain if they're listed in an array:

var objectA:Array = [A,B,C,D,E,...]; 

addEventListener(Event.ENTER_FRAME, transform_objects);

function transform_objects(event:Event):void {

for(var i:int=0;i<objectA.length;i++){

objectA[i].x += 5;

if(objectA[i].x >= 1400){
objectA[i].x = -150;
}

if(objectA[i].x>=300 && objectA[i[.x <=900){

objectA[i].play();

objectA[i].scaleX = 1.4;

objectA[i].scaleY = 1.4

}

}

}

[lemiran]

Good idea!

In my case, i would like to transform the objects one after other and not the all at the same time.

Would it work?

(i will test it 🙂 )

[kglad]

it won't work in a for-loop.  they all update on the stage at the same time.