ActionScript 3.0 :: HitTestPoint( X, Y, True); Implementation?
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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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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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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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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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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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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Nov 18, 2003
I am pulling the words "true" and "false" from a query, but in flash I need them to be the values of true and false, not strings, is there a way to convert this datatype?
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Aug 28, 2010
Selectedcolor, true to the text true or false is false text into print.colorPicker component in, I select Export to a selected color, the color value myMC texte into summer, but accuracy can not control.
var myColorPicker:ColorPicker = new ColorPicker();myColorPicker.editable = false;myColorPicker.visible = false;myMC.visible= false;myColorPicker.addEventListener(MouseEvent.CLICK, clickHandler);myColorPicker.addEventListener(ColorPickerEvent.CHANGE, changeHandler);[code].........
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Jun 15, 2010
I'm trying to make a simple platform shooter game, although I just cant seem to get jumping right. hitTestObject works fine, but hitTestPoint doesn't seem to work at all.[code]on that last bit, if I use hitTestObject instead, it works fine, but when i use hitTestPoint, I just fall through the ground as if nothing is there.and I want to use hitTestPoint so I can make floating blocks
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Jun 9, 2011
I'm probably missing something about which parameters I'm supposed to be passing.Here is the code:In the first class (the hitting object belongs to this class):[code]It always traces "Didn't work" when I drag the instance of the first class over the instance of the second class. What am I not understanding about the hitTestPoint function?
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Sep 19, 2011
Why does hitTestPoint isn't working on DisplayObjects that has cacheAsBitmap set to true?It does work, but it takes the Whole rectangle of Display object, not respecting wheather or not pixel is transparent or not (transparent pixels return true after hiTestPoint)
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Jan 20, 2011
im trying to create a menu that drops down when you roll over it. however I cant get hittestPoint to work.I have a movieClip on my stage with a class attached. Inside this movieClip is another movieClip with an instance name of "hitBox"
ActionScript Code:
package {
import flash.display.*;
import flash.events.*;[code].....
Is it possibly to do with the mouseX and mouseY being local?
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Nov 20, 2011
Anyone know why "hitTestPoint(character.x, character,y, true)" would be hit testing off the origin point in the center of the character, and not the whole shape??This is my code from my document class. There's a custom splat class in there, but don't worry about that. This code is inside 2(1 nested) for loops.[code]
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May 19, 2009
I have been using hitTestPoint so far with mouse_move listener, which means if the mouse was stationary over target area when that listener was added the desired action wont happen until mouse moves.
Basically I have this window in the middle of the stage where loader loads pictures and when picture loads if the mouse moves over that window some other stuff appears.The listener is added after each picture is added and if the mouse was stationary above the loader when that happened it doesnt trigger hitTestPoint (until mouse moves).
I have seen somewhere this same effect, but it worked even if the mouse was stationary above the image when image appeared.
[Code]...
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Mar 3, 2011
I have the beginning of a game that looks a bit like Asteroids. The first version of the game worked, but was very code-heavy (every object was individually coded) so I decided to move the bulk of the code to document classes.
I wanted to have certain objects interact with eachother (bullets with asteroids, asteroids with ship, etc.) but they can't find eachother. Also, as you may notice in like a second from now, the whole code is handled by a single document. I guess I should do something about that as well?
Code:
package
{
import flash.display.MovieClip;
import flash.text.TextField;
[code]....
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Jun 18, 2010
I want to put an IRC client in my webpage. I know there are many clients but not opensource ones (I didn't find any). So, do you know some free and open source projects to implement an irc client on a webpage? I mean is it a good idea to have one made in flash?, one made in html5?, one made in javascript/php?.
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Nov 10, 2011
All the program does is you click a button and it tells you how many times you clicked the button in a textfield. Document Class: This is the entry point of the code.
[Code]...
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Mar 26, 2009
How would I change this to do a few test points,if (mydude.hitTestObject(myratarray[i])){
is it along these lines? if (mydude.hitTestPoint(myratarray[i].34,myratarray[i].12,true)){
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Jun 26, 2011
I'm not sure this is even possible, but does anyone know how to get the hitTestPoint function to ignore transparency for a MC containing a png image?
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Oct 20, 2010
Google says that[code]...
is the way to test for the mouse being over a DisplayObject. This works if my movie is displayed at 100% scale. But if maximise my browser window so the Flash movie changes scale, it all goes to pieces.
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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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Nov 1, 2010
I have my two MovieClips and I both of them collide and the hitTestPoint works, but I want to make that one MovieClip will not be able to go on if that second MovieClip is in front of it but its can turn so that it to another side so that it can move.
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Oct 8, 2011
Why does this happen ?
Code:
Main:
ActionScript Code:
import flash.events.Event;
import flash.events.MouseEvent;
import flash.display.MovieClip;
[Code].....
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Mar 4, 2012
I've followed a tutorial and everthing works fine but I'd like to use hit-tests instead of the intersect-code. change the code so it works just the same with hit-tests.I dont get the same result.
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Aug 16, 2009
PHP Code:
//Move Enemies Events
function moveEnemies():void {
//Runs through every enemy stored in the array.
for(var c=0; c<enemyArray.length; c++) {
[code]....
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Feb 15, 2010
[Code]....
This code serves the purpose of raising the character upon going up a hill. However, since the game will be on a large space (larger than the document size 1000x750) I am moving the ground (mc_Blockers) instead. This code is supposed to push the mc_Blockers down then it intercepts with the characters y. But instead, it just throws the character really high. When I examined it closely, it seemed to me that it threw the character up till the bounding box of the mc_Blockers (the whole stage is drawn, I'm not using blocks for floor, etc.).
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Aug 14, 2009
Is something like this possible in Actionscript?
Java:
URLFetcherFactory.setCreator(
new IURLFetcherCreator() {
public IURLFetcher create() {
return new URLFetcher();
[code].....
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Jul 17, 2010
This is working, but is this a good example of polymorphism?[code]...
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Mar 1, 2011
I have been trying to implement the Round Up Power Of 2 algorithm outlined in the following link in AS3.
[Code]...
The algorithm works great for most of the values I've tested. It is mentioned that this will return 0 when given an input value of 0 which is technically incorrect but I'm ok with that output. What I'm not ok with is when given an input of 1 I get and output of 1. I'm thinking that this must be a caveat of AS3 and its wonky uint implementation but I can't seem to figure it out. I have also tried using the >>> logical shift operator to the same result. My C is a little rusty, but I'm not sure how this would even return 2 in C. Can someone explain to me whats going wrong here? I assume if an input of 1 was a special case it would have been mentioned in the above link.
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Sep 11, 2011
I have created the following classes for sharing images. They implement an interface, but I need a way of switching between them with user interaction. I've done it the following way:As you can see, service 1 and service 2 implement iSharingServices, and inherit from PolimorphSharing.PolimorphSharing is simply and an abstract class that implements the methods I want public from Service 1 and Service 2. Those methods will then be overridden on the Service 1 and Service 2. Because I need a way to switch the service in runtime, I've created a gateway class that inherits from PolimorphSharing. I can then call it the following way:
private var sharingService:PolimorphSharing = new SharingServicesGW('svc1').createService();
This all works flawlessly, and I can now switch between services with no problem whatsoever. However, I feel there's something wrong about it, so I would like to ask you guys for some advice on how to better implement this.
UPDATE:
Just adding some more insight to this. Basically the idea here is for my client to be able to upload images with various different public sharing services such as imageshack, imgur etc. I want my client to be able to select the service in which the image is to be published to (hence the "switching between them with user interaction" bit of the question.
The method that does the uploading bit, is requestShareImage(), processResults() simply turns whatever gets returned to a unique format, so my client can read off it always the same way. getObject() is my accessor, and onIOError will handle exceptions with any of the public API's
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