ActionScript 2.0 :: Avoiding Class Collisions / Overwrites

Dec 30, 2009

I'm working with AS2 and running into a problem when loading a bunch of SWFs that share classes. I have a main SWF that loads several child swfs. The main and the children often share some core classes. The issue is that these SWFs were not all created at the same time, and some of the core classes have changed between SWF compilations. It appears that the first instance of any class to load gets used for all following references to that class - regardless of which version of that class was used in compiling the following SWFs.In AS3, the ApplicationDomain can be set to circumvent this issue, is there any that can be done in AS2 to avoid this collision/overwriting?

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Nov 9, 2004

I have run into this problem twice now, for two different reasons. Technically the more recent time it isn't a roadblock, but rather I just want to avoid memory waste by not using nested functions for my event handlers.[URL]

The reason I've come to this forum is that I always went on my merry way, defining event handler functions on movieclips within functions, until today, I read "I really didn't like the idea of defining an event handling function within a method of a class. I don't think nested functions are a really good practice." in the archives of the BIT-101 blog. So I decided to try to extract these and assign only a reference to each movieclip that needs the function. The problem is, it's in a class - and I need access to the properties of the movieclip from within the function. I figured I might be able to extend MovieClip, but I don't want anything in the library, so I run into the problem of how I would use my new movieclip-extending class - I read something about using the Linkage name of "__Packages."+[classname] - is that really proper? Either way, my final question is - if it's not good practice to use nested functions within the class, where do I create my event handler functions?

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ActionScript 3.0 :: Separate Touching Collisions From Overlapping Collisions?

Nov 22, 2010

I'm working on a game (my first) where objects touching is A-Ok, but I want to detect overlapping collisions ahead of time, prevent them, and react. This seems like a pretty basic and common thing, such as a character walking along a platform (even though by touching it it's 'colliding'), but of all the many many collision detection tutorials I've looked at, none of them have covered this case--they all assume that objects touching should be indistinguishable from overlapping. I've been using a workaround of a slightly smaller hitbox to use for collisions, but it has issues of it's own that make it not so good. So basically I'm looking to redo my CD from scratch.

So, like I said, I'd like to know how to differentiate between 'touching' collisions and overlapping collisions, but even a way to keep touching collisions from triggering entirely would work.

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ActionScript 2.0 :: SWF Within Another Overwrites Values?

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Action script for Flash MX I made this swf here from the random circle motion tute though slightly adapted, and want to use it as a cursor in another movie. The actual swf is smaller but appears bigger here for some unknown reason.

<hr>
<OBJECT classid="clsid27CDB6E-AE6D-11cf-96B8-444553540000"
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[code]....

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ActionScript 2.0 :: Avoiding Mouse Objects?

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I have a Flash based game for the browser which sends users' scores to a php backend script which stores the score and the user id in the database.

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I have a problem regarding flash, actionscript3 and movieclips.

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ActionScript 2.0 :: Avoiding SWFs Being Downloading To Client System?

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I'm working on a Flex application that uses MVVM. I understand that it's recommended to have a 1-to-1 mapping between views and view-models. How then do I avoid performing the same calculations and storing the same data multiple times if it is needed in multiple views?

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ActionScript 3.0 :: Flash Avoiding Registering Events With Multiple MovieClips

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Imagine that you have a lots and lots of the same library item on stage - movieclips - and you want each of them to be clickable. Normally, you would iterate through each of these and register an event listener on MouseEvent.CLICK for each one. It seems to me that if there are large quantities of these items this could be quite inefficient - on memory mostly - to have all these event listeners. I'm trying to figure out if there's a more "central" way to do this, where your main document class just registers once with some kind of central dispatcher using a custom event? Any time ANY of the movieclips are clicked, that fires this custom event and you can just query the event to figure out which clip was clicked.

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Code:
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I have shortened this example to keep it simple, otherwise I wouldnt be doint this

I need to pass different variables to function inForLoop each time.

Code:
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[Code]....

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for example:

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[code].....

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Cant Get Collisions To Work

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I am making a game and I cant get my collisions to work. I will give a link to the files because I use external .as files.

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ActionScript 2.0 :: Any Way To Check Collisions By Arrays?

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I am trying to apply code to all instances of the enemy that appear randomly but I've run into problems. Firstly the enemies appear when you press space and the collision doesn't seem to work. I kind of thought you have to push the enemies into an array and hitTest that array right?

Actionscript Code:
stop();
var ship_speed:Number = 10;var lazer_speed:Number = 20;
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[Code] .....

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ActionScript 2.0 :: Flash Car Collisions / Hit Test

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I've been using flash for a long time. I know some stuff, but not enough for what I am trying to do. Basically, I am making a little car minigame of a car in a city. This is my engine on the car:

onClipEvent(load){
speed =0 ;
} onClipEvent (enterFrame) {
if (Key.isDown(Key.UP)) {
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[Code] .....

I am fine with all of it but the collisions, as the car will only bounce when the registration point of the car collides with 'wall', so it looks all funny and that and the car goes into any thing collable half way then bounces back, and occasionally gets stuck in the wall. Reall annoying. Ive tried fixing it but whenever I remove the hittest parts the car wont even move or turn. How to get the wall collides with the car (27.7 x 13) and not the registration. I need a strong engine which works with curves as well, and requires me just putting the code into the car, but if I have to put it into the walls/frame i suppose its okay, but theres no way im going through every single building and that.

Also, it would be cool if:
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I'm trying to create a air-hockey game, in flash using AS3.At the moment, I am using an enter frame function to check the positioning of the 3 objects, 2 paddles and a ball, then it checks to see if they are in contact, if they are it then initiates a detect collision function.However it's checking every time the frame is loaded, and at 25 fps, this is quite a lot and the app lags.

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[Code]...

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I've been experimenting with circle vs. circle collisons. Ive been using the code below to check for collisions and seperate the objects.It works just fine, except in conditions where more than two circles are touching at the same time. For example, if three circles or more are colliding at the same time, they can sometimes overlap and then struggle to separate.

I think I know why this is happening. The code loops through the object array and checks for a collision between each object one at a time and alters their positions and velocities. The problem is that if it finds a collision between objects at the end of the array, the positions of the objects could be changed in such a way that they cause an overlap with an object that was checked earlier, for which no collision was detected. This new collision then goes undetected and this flaw is amplified when the loop runs again.

Code:
function circleCollision(circleOne:MovieClip, circleTwo:MovieClip):void
{
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[code]....

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ActionScript 1/2 :: Use The HitTest Function To Check For Collisions

Apr 17, 2009

I know you use the HitTest function to check for collisions, but how would I do that the moment a movie clip is dynamically created. So the moment the clip is created it would check if it is overlapping another clip. Also, does it matter if the clips are at different depths?

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Flex :: Detect Visual Collisions Between Objects?

May 3, 2010

I would like to avoid the tags overlapping each other in this small Flex project: I've this small FLEX project: [URL]..

The items are LinkButtons. How can I check if they are colliding or not ?

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Flash :: Using A Custom Event To Listen For Collisions?

Feb 13, 2012

I'm new to flash and programming in general but am learning it to make games. I'm currently messing around with hit detection and its not to hard to test in the game tick ( fired from onEnterFrame). What I'm wondering is if it would be possible / useful to create a custom event that i can listen for. And make the eventListener hear when a collision happens. Also would this be better or worse for the cpu than testing the collisions of lots of enemies on a screen?

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