ActionScript 3.0 :: Hittestpoint Returns True Even After Object Is Removed?
Nov 29, 2009
I have six objects which are on the stage when my game loads up. I have stored them in an array in my Document class. Occassionaly I run through this array and check if something has hit these objects and remove them if so. i don't actually remove them from the array though. I'm finding though that even after these objects have been removed from the stage, the hittestpoint still returns true when something crosses the area where these objects once where?! Doesn't the object have to be there for hitTestPoint to return true?
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Nov 4, 2011
I have a load file and a write to file method. We all know what they do. How ever load always returns true and write always returns false....Right there you know somethings wrong. Because The forums have an issue with me posting code...I posted it here: [URL] Based on this code what is the issue here? why is write always returning false and why is load always returning true? (even for files that do not exist). My understanding is that if flash cannot find the file it should write to it will create it and if it cant load said file, then that method should return false.
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Jun 2, 2009
Testing this function and running it 11k times on a shape where I use:
shape.opaqueBackground = true; shape.cacheAsBitmap = true;
Is extremely slow.. It seems to take 4 to 5 seconds to check a 101 x 101 tectangular area.I'm wondering how it is implemented...I know the code for the SDK is available?I can 'getPixel' from a bitmap to get the very exact color of that pixel in 1/1000 that time.If I happen to have the bitmap data.But with a shape that is already 'treated as a bitmap' (see above) using hitTestPoint can stop your system. It should not be vastly inferior to work with Shapes than it is with bmp data..
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Sep 18, 2011
I have a movieclip I drawn, called Map. It has a child with the name Wall. I'm trying to make a function that returns a 2d tile array of if there is something in that tile or not, for pathfinding. The problem is, levelGrid is entirely false. I'm not sure what I am doing wrong. I have filled the whole movieclip (Wall) with bright red, and yes it still returns false. The x and y of both Map and Wall is 0, so I don't think there should be issues with hitTestPoint accepting global x / y.
[Code]...
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May 12, 2011
Title explains teh problem - anyone ever encountered this issue or have a solution. have tried everything - tearing my brains out
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May 12, 2011
I try, in standalone test environment it always returns true - it should return false -
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Mar 10, 2006
For some reason my hitTest in the following function is not working. With each onEnterFrame of the mc being "fired", I am checking to see if it is touching one of the "clouds" I have floating by. My traces tell me that I am targeting everything correctly, but for some reason, hitTest never returns true. Even when I see the mcs colliding. The "clouds" are dynamically attached and pushed into an array (cloudsArr) The clouds and the "fire" mcs are on differnent timelines, but should that matter if I am targeting them correctly?
[Code]...
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Dec 15, 2011
I'm trying to create a boundary for a player object, controlled with arrow keys, in my game using the main stage's height and width. For example, one test point is at the top edge of the player object's bounding box so that when the player object's head touches the stage's top edge, the player can't move anymore to the north. The player object is manually instantiated to the center of the stage by using the Flash stage editor so it will start at the center before the program starts.The problem is that right at the start of the program, I can no longer move the player object up or down with the arrow keys but I can still move it left or right. The intention is to allow the player to move north until the player object's head touches the top edge of the main stage.[code]
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Jun 28, 2010
Recently I was trying to use hitTestPoint with a nested movieclip against another non-nested one. Then if the nested movieclip was found to collide with the the registration point of the other movieclip (shapeFlag was set to true of course), the nested movieclip would move down by 1 pixel until it wasn't colliding.[code]What happens is that the while statement doesn't kick in until the registration point of obj3 is over obj2, but it doesn't break until obj3 is not over the bounding box of obj. Alternatively, if I change obj1.obj2.y to obj3.y it does stop at the correct spot.Actually I guess the problem isn't obj2 being nested in obj1, the problem still occurs when it's taken out of obj1.
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May 20, 2011
I am instantiating the 'Target' object five times on the stage. This is happening, but only one object is able to have hitTestPoint performed on it. Can anyone help as to why this is happening?[code]
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Jan 5, 2011
I'm having a problem changing the direction of a movieclip using hitTestPoint. I have some balls on the screen that only move left, right, up and down. and pending the way they are moving they have to change direction. if they're moving right they have to change to up. left to down, up to right and down to left. I tried the following code for getting a ball moving moving right to change to up. note: movingDir is just a string i use to keep track of how the ball is moving and is defined initially in another class. here is a snippet from the ball class:
[Code]...
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Jan 5, 2011
I'm having a problem changing the direction of a movieclip using hitTestPoint. I have some balls on the screen that only move left, right, up and down. and pending the way they are moving they have to change direction. if they're moving right they have to change to up. left to down, up to right and down to left. I tried the following code for getting a ball moving moving right to change to up.
note: movingDir is just a string i use to keep track of how the ball is moving and is defined initially in another class.
here is a snippet from the ball class:
Code: Select allthis._movingDir = "right";
this._speedR = 5;
this.x += this._speedR;
[Code]....
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Jan 1, 2011
Which one is more efficient? Or is there even a noticeable difference? I did tests of a circle moving closer to a square and stopping when hitTestPoint returns true. The square was at 0 and the circle was at 500. My first test I did using hitTestPoint the entire time, my second test I did by checking the distance (Pythagorean Theorem way) and if it's below 50 then check with hitTestPoint.
I compared the FPS of each test but they were the same at 30 FPS with 200 circles and at 11-12 FPS with 500 circles. I thought the first test would be slower because I was testing every pixel the entire time while the second test I was only calculating the distance for the most part before testing every pixel.
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Aug 17, 2009
if i have a movie clip with an even listener attached to it, is the event listener being removed automatically when the movie clip is removed from the stage or should i always remove the event listeners manually?
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Apr 7, 2011
I want to remove all children of the name (mc1) but be able to add new one when I call the add function again Heres what I have
// Draws the squares
Code:
function drawIt(e:Event=null):void{
mc1.graphics.lineStyle(1);
mc1.graphics.beginFill(ITsColor);
[code]....
Removing all the (mc1) movieclips works fine, but when i click on the butotn to call drawIt again, all previous mc1's are displayed again with the new ones
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Sep 26, 2009
the example is this, wich i am trying to remove a movieClip wich is 'mc' by clicking button, but after i click it, the object mc is still traced every time the startTrace initiates, that means its still there right? im using flash cs4,
Quote:
var mcRef;
var mc:MovieClip = new MovieClip();
this.addChild(mc);
mc.name = 'mc';
[Code].....
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Aug 12, 2010
I have two FLV files playing on the stage. The main FLV is instance is: MyVideothe 2nd is MyVideo2I have imported the videos using the wizard. The 2nd video is just a movie I created in Affter Effects that says...loading please wait....this is a really nice video and I don't want it to just use a standard preloader. Anyway, the goal is when the playback for "MyVideo" begins I would like "Myvideo2" to = visible = false;I have tried this many different ways and have been unsuccessful. I am obviously a newb at this. Also, does anyone know where I can get a list of all available eventListener actions...etc?
//var nc:NetConnection = new NetConnection();
//connection_nc.connect();
//var stream_ns:NetStream = new NetStream(connection_nc);
[code].....
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Jan 25, 2010
Here's the code I'm having trouble with:
function offNav(e:MouseEvent):void {
if (mouseX >= 0 && mouseY >= 0 && mouseX <= 36.45 && mouseY <= 325) {
TweenLite.to(navPanel,.5,{x:0});
TweenLite.to(home_btn,.5,{x:15.65});
TweenLite.to(work_btn,.5,{x:11.5});
[Code] .....
The problem is with smallImg_mc. Later on when it is clicked, it gets removed using the removeChild(smallImg_mc) command, and my question is how do I signal it through an if statement where it says
if (smallImg_mc.visible !== false) {
setChildIndex(smallImg_mc,1);
setChildIndex(logo,1);
}
It's causing annoying output errors.
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Jul 1, 2010
I have some MXML elements which i would like to remove and add to a parent element. Unfortunately I am constrained to removing the MXML object as this is handled by the custom component. So is there any way to reinstate a removed MXML element back into the display list?
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Nov 21, 2010
Anyone know if there's a way to check for objects in memory that have been removed from a display object but not set to null?
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Oct 4, 2011
I read some articles about ActionScript's weak references. There are two types.
Trick with Dictionary class.
EventDispatcher class.
I expected weakly referenced object to be disappeared immediately when last strong reference removed.(regardless of GC behavior) But those tricks didn't work like that. The object referenced only weakly still live a while, and looks disappear when next GC time.Removing all of strong references didn't make weakly referenced object to be disappeared from object graph.(I know it'll not be deleted immediately)
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May 3, 2010
I am trying to create a custom object in AS3 to pass information to and from a server, which in this case will be Red5. In the below screenshots you will see that I am able to send a request for an object from as3, and receive it successfully from the java server. However, when I try to cast the received object to my defined objectType using 'as', it takes the value of null. It is my understanding that that when using "as" you're checking to see if your variable is a member of the specified data type. If the variable is not, then null will be returned.
This screenshot illustrates that I am have successfully received my object 'o' from red5 and I am just about to cast it to the (supposedly) identical datatype testObject of LobbyData:
[Code]...
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Nov 23, 2010
I am consuming a web service and it is returning an object, how can I access this data? Below is the XML returned by the service.
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Mar 15, 2010
I'm actually rendering quite a complex 3D scene (complex is a relative term here, doing a similar scene in d3d or opengl would be a breeze, but they're hardware accelerated so you'd expect that). I've built a 3D engine with some basic features including depth sorting, 3D tweening, and mapping between polar and cartesian coordinates. This last bit should be a give away as to what I'm doing - I'm rendering a 2d grid onto a sphere that I then unravel, spin around, squash, expand all so the Client goes ooh and aah. The trouble, is that on anything other than my workstation, rendering crawls. From discussions with other flash programmers and my own investigations, the slow down is most definitely caused by the rendering itself, and not my relatively swift matrix and sorting calculations (they take around 5-14ms tops depending on the complexity of the scene) .
So, my question is, what exactly does happen when I set cacheAsBitmap to true on a display object? I see no texture map distortion so I'm under the impression that flash automatically splits the cached bitmap into polygons for rendering, but how good is flash at doing this? I don't care about texture distortion on objects beyond a certain z value because they're far away, and try as I might I have found no way of setting the equivalent of a display objects 3d render quality. I'm certain that if I could set such a value, I'd at least double the render speed of my scene by only rendering many polys for objects near the camera. Failing this, is there a way to coerce flash into rendering a low poly object? Perhaps by making invisible any graphically complex children?
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Sep 4, 2009
about.buttonMode = true;
about.useHandCursor = true;
I have this on a MC I use for a button - and it works but only on HALF of the object - how can I make so it works on the whole object itself?
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Oct 20, 2010
I have a movieclip that contains two frames, each frame contains a different set of buttons.
it seems that i cannot add the event listeners to buttons that are not in my current viewed frame.
so.. problem one: is there a way to add event listeners to all the elements in the movieclip even if the elements are in a different frame.
problem two: after I added an event listener to some elements in current frame and then I move forward to the next frame and go back to the same frame, all the event listeners are removed and i need to initialize them again. is there a way to resolve the issue without the need to re-initialize the event listeners ?
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Jun 11, 2004
I know how to do this in other codes, but..if (condition1=true) AND (condition2=true) then... How do you do this in AS?
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Dec 8, 2009
I've been spending some of my spare time working a set of collections for ActionScript 3 but I've hit a pretty serious roadblock for the way ActionScript 3 handles equality checks inside Dictionary Objects. When you compare a key in a dictionary, ActionScript uses the === operator to perform the comparison, this has a bit of a nasty side effect whereby only references to the same instance will resolve true and not objects of equality. Here's what I mean:
[Code]...
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Sep 10, 2009
I have a button at the start and end of a short timeline, it works fine. But when I add a simple MC to the up state of the button, flash gives me this error: TypeError: Error #1009: Cannot access a property or method of a null object reference. at BtnWithMCinside_fla::MainTimeline/frame18() The 'mc within a button' method has worked great until that button is placed beyond the first frame. why this is happening and how to fix it? (SWF attached)
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Mar 9, 2010
In my flash application, I've got multiple windows which use Scrollpanes. The scrollDrag property is set to true on these because I want that functionality. If I close (within my application) one of these 'windows' and open another, I seem to get a whole lot of this error showing up in my logs:TypeError: Error #1009: Cannot access a property or method of a null object reference.at fl.containers::ScrollPane/endDrag()Sometimes I get thousands of these, which I'm guessing is probably slowing my app down a bit, but otherwise is not causing a problem. Looking through the adobe code for scrollpane, endDrag is really simple:
protected function endDrag(event:MouseEvent):void {
stage.removeEventListener(MouseEvent.MOUSE_MOVE, doDrag);
}
The stage var is the only thing that could be null here.The only thing I can think to do is set scrollDrag=false before the window in my application closes so that nothing is listening for the event
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