I tried the benchmark on this site: Array vs. Vector vs. Linked list. It tests the performance of iterating over said sequences.Remarkably, iterating over a linked list is approximately 2.5x faster than a Vector.<int>. What is the reason for this counter-intuitive result?
View 1 RepliesI need to know the best method to find an item inside a list (Vector, Array, Dictionary, whatever is faster) of complex type (extensions of Objects and Sprites).I've used "Needle in Haystack" method, but it seems that it isn't fast enough.
E.g.Suppose that I have a collection of Sprites (a pool, in fact).Each sprite will be added to the stage and perform some action. After that, it will die.I don't want to pay the cost to dispose it (garbage collect) and create another (new) one every time so I'll keep the dead sprites in a collection.
Sometimes times I'll call a method that will add a sprite to the stage.This sprite can be a old one, if it is already dead, or a new one, if the pool don't have any free sprite.
One of the scenarios that pushed me to this question was a Particle System.A "head" particle leaving a "trail" of particles every frame and exploding into a flashy multitude of particles... Every frame...Some times this counts up to 50.000 PNGs with motion, rotation, alpha, event dispatching, scale, etc...But, this is JUST ONE scenario...At the moment I'm trying to use a Object Pool with a Linked List...Hopes that it will be faster that running a whole Array/Vector or create new instances every frame an let them dye with Garbage Collection.
I know there are different situations where one would be better than the other, but I'm comortable with a generalized statistic of... How much faster is blitting than using vector Sprite objects in Flash?
View 2 RepliesI am trying to improve the frame rate of a game that draws many floor tiles. Currently, the floor tiles are vector graphics and stored as different frames in a movie clip. I wanted to experiment with rasterizing a floor tile and seeing if that would provide any frame rate boosts. I did this by converting one of my tiles (one of the frames in my movie clip) to a png and replacing the vector version of this tile with this raster version. I then tested two worlds--one filled with tile A (vector) and another filled with tile B (png).
In all my tests, world with tile A (the original vector version) outperformed the world with tile B. I am guessing that the reason I am not getting the expected performance gains is because I am still rendering the tiles in the old style and not using any strict bitmap drawing calls?why it is that this method fails to boost rendering speed? Would I have to switch my rendering code to strict bitmap draw calls?
So, the actual act of scaling a vector object has a bit of a cost to the CPU, and so animating an object from one size to another has a significant cost -- but is there any additional cost for simply playing an animation that has previously been programatically scaled?
My initial thought was that if I took a character -- it's a little dude with a walk cycle, done in vector, and skooshed him to like 0.66 scaleX and scaleY then there would be some performance hit for even just playing his walk cycle in skooshed mode vs. playing it at normal size, but I can't manage to confirm my suspicion.
does setting the fixed property of a Vector to true before entering a loop is better for performance?
View 6 RepliesI am currently making a website in flash for a football team and i would like to make a list of all the players names which link to separate player profiles in the same flash document.
View 4 RepliesI know there isn't a built-in linked list in AS3, but one can easily write his own. However, I found it difficult to come up with a good solution for sorting such list.If you didn't know, linked list is a chain of "cell" objects, where each object has a reference to the next object, typically you can write it like this:
Cell1.next = Cell2;
Cell2.next = Cell3;
CellN.next = null;
(Circular linked list and bidi linked lists are out of the scope of my problem, for now at least).
I looked into other languages that do have linked lists or even standard libraries for them, however, I don't seem to be able to either port any of their solutions, or, some of them, if ported to AS3 would not be workable (since they use recursion) or would otherwise have huge overhead because of lots of method calls etc.
I think, I'm focused on 2 possible algorithms: Merge sort and Insertion sort. These two seem to be most applicable to AS3. However, I may be wrong - so, please fill free to correct me.
i need to create objects with a unique name with a loop in a way that i could get this...
var n1:node=new node(12);
var n2:node=new node(22);
var n3:node=new node(32);
[code].......
I was looking at implementing a linked list to use instead of arrays in some areas. But is it really worth it in AS3? I did some speed tests using 10000 objects (ints). Access is about the same as long as you know what node you're on. Removal is of course faster.But adding to the linked list is actually slower than push() by the same amount that it is faster in removal.So is it really worth it to use them?
View 1 RepliesI have a linked list of data in Red5server that updating every 8 second. I want to send this linked list to Flex. is it possible using shared object? or any other solution?
View 1 RepliesMy question is, does a better, faster CPU necessarily equal faster SWF compile times? Or does it rely on something else (OS, memory, etc). I only use AS3 and some of my projects take a while to compile. If certain hardware can guarantee me a faster compile time, it'd be worth including those things in my shopping list.
View 2 RepliesI can make a normal preloader, with a bar and percent shown and so on... But I want to make a little thing in the middle of the preloader that rotates faster and faster when the percent loaded goes up. This is what I thought would work:
[Code].....
[code]in my original code..function "test" will change the x axis of the images by Timer..I wanna the x axis of the images can be changed after every two seconds..but when I run it..it's obvies faster and faster every time when the Timer dispatch the TimeEvent the delay always shorter than the last time.
View 7 RepliesHow can find out the linked url of the image in the flash of a website? I looked for the image url some time. but couldn't find itif find the linked url of the image, and i want to alter an image linked url address. where is the code in?
View 3 RepliesOn the mxmlc command line, I can include paths to RSL files. I can choose to link these RSLs at runtime by setting
-static-link-runtime-shared-libraries=false What if I need to link to some rsls and embed (static-link) other rsls? Is there a way to set the link settings for each rsl?
this is what i'm trying to accomplish; With a click on a movieclip (cannon_mc)a shot is being fired (ball_mc)
The longer mouse is down, the speed of wich the ball is fired with should increase.My question to you is;
What is the most efficient way to accomplish this? With a timer or something like this;
[Code]...
I'm devloping some library classes for flocking/steering behaviours on large numbers of objects (2000+). I'm finding that at < 500 instances, performance is reasonable. As the numbers increase, framerate bogs down.
I've seen remarkable performance with libraries such as Flint or Box2D with ridiculous #'s of particles / objects, so it should be possible to optimize / refactor my code to be a bit better.
I'm aware of the basic optimizations, such as bitwise operations and optimized for loops. Are there any more fundamental approaches I should be considering? For example, currently each instance is a vector-based MovieClip. Would working with BitmapData be more efficient?
Will I take a big hit in performance using nested ViewStacks? Should I strive to handle all navigation in one ViewStack and push children manually or will the affected performance be negligible?
eg.
<viewstack>
<tabnavigator />
<tabnavigator />
<tabnavigator />
</viewstack>
We have a medium size Flex 3.6 application that contains around 20 different page views (managed via a single lazy ViewStack) each having multiple components. Most use custom renderers.All model data is loaded at startup and changes to model instances are communicated via binding and/or collection change events.Once the user has viewed each page at least once, all page views are instantiated and happily listen to update events.Which in effect means that each time a model instance changes, all interested views receive that event and compute derived data or trigger item-renderers.I have tested and confirmed this behaviour in a proof-of-concept application. Even when setting a list to being invisible, it still listens to collection change events and invalidates any renderer affected.What would you do?
View 1 RepliesI'm getting
ActionScript Code:
1067: Implicit coercion of a value of type
__AS3__.vec:Vector.ie.aro.floorplanviewer.model.buildingVOs:ConfigurationVO>[code]....
which surprises me as ConfigurationVO inherits from NodeVO.Is the compiler really not able to figure out that a Vector of a superclass should be able to hold a reference to a Vector of a subclass?
I need to import a bunch of vector work from Photoshop into Flash. Is there a trick to it. So far, on import, it's converting the layer styles into black.
View 5 RepliesIf I want to pass in a vector to a function, a vector of any object specifed would it be someVetor:Vetor.<T>? beause FB 4.5 sais T is undefined.
View 10 RepliesCreated Vector with the initial length of 100.
var v:Vector. = new Vector.(100);
v[90] = "Ninety"
v[190] ="oneninety" //RangeError: Error #1125: The index 110 is out of range 100.
//How to change the length from 100 to 200 to store a value at index 190
I am currently being confused by the Vector class.I wrote a beautiful XML to TypedClass parser. Works beautifully and without fault. UNTIL a co-worker noticed we got a Conversion Error for Vector.<Number> to Vector.<*>.
Every Vector I've ever tested all extend Vector.<*>.
Vector.<Sprite>, Vector.<String>, Vector.<Point>, Vector.<Boolean>, Vector.<TextField>, Vector.<CustomObject>, etc etc etc. ALL of them.
<type name="__AS3__.vec::Vector.<String>" base="__AS3__.vec::Vector.<*>" isDynamic="true" isFinal="false" isStatic="false">
<extendsClass type="__AS3__.vec::Vector.<*>"/>
[code]...
But then when I use describeType on Vector.<Number>, Vector.<uint> and Vector.<int>.
<type name="__AS3__.vec::Vector.<Number>" base="Object" isDynamic="true" isFinal="true" isStatic="false">
<extendsClass type="Object"/>
<constructor>
[code]....
Now I have accounted for these 3 vectors individually as even uint and int does not extend Vector.<Number> as I would have expected.
And my parsing function works for all types correctly again. But my confusion comes as to WHY this is the case, and why I couldn't find any documentation on the subject.
Class ShootGame implements IGame{
[Code]...
I have a large vector drawing (imagine 5000x5000) that i want to break up into separate pieces. I know that I can convert this vector drawing into a bitmap and then use the copyPixels method to create many separate bitmaps of the different regions of the original vector drawing, but is there any way to subdivide it into movieclips that just contain vector graphics instead of a bitmap?The reason im dividing a big chunk of vector graphics into smaller pieces is for performance reasons, so flash would only render a small part of this big chunk at a time (only certain regions/voxels/subdivisions are rendered at a time). But bitmaps apparently take up a lot of memory and the system im using would take much less memory if these subdivisions could be preserved in their original vector graphics form.
I imagine I could use masks somehow to achieve this effect (for each subdivision, duplicate the huge image and mask only the region that the subdivision represents), but I dont know the performance costs of masking or if this will create other problems.So is there anyway to split up a movieclip of vector graphics into smaller movieclips of vector graphics the same way copyPixels can with bitmaps?
I am making a flash game and I am trying to make it as efficient as possible. I need to set a timer and then do something after the timer runs out.So, that being said I am wondering which method would be faster (or more efficient):Making a timer object and listening to the TimerEvent.TIMER_COMPLETE or in the ENTER_FRAME event of the game checking a Boolean (time) and then if it is true, incrementing a variable until that variable is equal to x, then performing the operations.
[Code]...
so as my title says. I'm wondering if specifying the datatype in actionscript 3 on variables actually makes code run faster
View 1 RepliesWhat is faster Flash or Silverlight? So I mean there is working Flash quake and Silverlight quake (not totally working yet)
So what is faster after all? Or Are they all same speed?
really need to know to get an idea on what it's better to start my cool programming project.