ActionScript 3 Optimization Tips

ACTIONSCRIPT 3:
COMMON OPTIMIZATION
Teerasej Jiraphatchandej
User Group Manager, Thai Adobe Developer Community

Create by Teerasej Jiraphatchandej.
All rights reserved . Thai Adobe Developer Community . http://thaiadc.groups.adobe.com

Understand:

CODE
EXECUTION

CODE EXECUTION

24 fps


CODE EXECUTION

• Phase 1: event & enter frame

• Phase 2: rendering


CODE EXECUTION

Phase 1 Phase 2


CODE EXECUTION

< 24 fps


Guideline:

OPTIMIZATION


AVOID OPTIMIZATION EARLY
All rights reserved .
Thai Adobe Developer Community .
http://thaiadc.groups.adobe.com

http://www.flickr.com/photos/23912215@N02/4112230589/


SOME OPS, NOT NOTICEABLE

6264966_82f69fd170_b.jpg from flickr


OPTIMIZED IS HARD MAINTAIN

http://www.flickr.com/photos/nigelmeng/636115602/


DON’T USE FILTER

http://www.flickr.com/photos/kwerfeldein/1693519458/


AVOID MOTION

http://www.flickr.com/photos/saxonmoseley/106432807/


PERFORMANCE TEST

1717925528_1aba213644_o.jpg from flickr

Tips 1:

USE
BITMAP

FLASH CS6 BITMAP

• Normal

• Cache as Bitmap

• Export as Bitmap


CACHE AS BITMAP

• Possible use more memory than vector.

• Apply to each graphic, not animated movie clip.

• Don’t use with container that has animating children


EXPORT AS BITMAP

• Good for static object

• Increase SWF file size.


Tips 2:

CONSERVING
MEMORY

DISPLAY OBJECT TYPE

• Shape
• Sprite
• MovieClip


SHAPE


SPRITE


MOVIE CLIP


PRIMITIVE

• Around 4 - 8 KB
• String depend on used
• Can’t optimize more


Tips 3:

REUSING
OBJECT

REUSING OBJECT

for ( ... ) {
var a : Object = new ...
}


REUSING OBJECT

var a:Object;

for ( ... ) {
a = new ...
}


Tips 4:

FREE MEMORY

GARBAGE COLLECTOR


GARBAGE COLLECTOR
Stage

MovieClip
MovieClip

MovieClip
MovieClip

MovieClip

GARBAGE COLLECTOR
Stage

MovieClip
GC MovieClip

MovieClip
MovieClip

MovieClip

FORCE GC TO WORK

• remove all reference to object

• Remove event listener

• Set object to null


FORCE GC TO WORK

obj.removeEventListener();


BEWARE!!

• Set object to null, not force GC to run immediately

• GC use CPU and memory in running.

• Adobe AIR force GC using: System.GC();


Tips 5:

DEACTIVATE

ACTIVATE AND DEACTIVATE

• Object that removed from stage, doesn’t be destroyed
immediately

• Use framework to optimize performance


FORCE GC TO WORK

Event.ADD_TO_STAGE
EVENT.REMOVE_FROM_STAGE


Tips 6:

DISABLE
MOUSE

DISABLE MOUSE

• obj.mouseEnable = false;

• obj.mouseChildren = false;


GUIDELINE SUMMARY

• Don’t optimize too early

• Some optimization will not be noticeable by user

• Don’t use filter

• Avoid motion

• Do performance test

TIPS SUMMARY

• Use BitMap

• Conserving memory

• Reusing object

• Free memory

• Activate & Deactivate

• Disable Mouse

TEERASEJ
JIRAPHATCHANDEJ
USER GROUP MANAGER
THAI ADOBE DEVELOPER COMMUNITY

teerasej@gmail.com

teerasej

thaiadc.com

ActionScript 3 Optimization Tips

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