ActionScript 3.0 :: HitTest Fast Moving Objects?
Aug 26, 2009
I'm just curious how you'd hitTestObject a fast moving object? The problem I'm having is that my bullet seems to skip over large areas depending on the speed. Since the speed of my bullet is 40 pixels per millisecond (I think), it seems to only appear on the stage in instances that are 40 pixels apart, so I cannot hitTest in between those instances.
Here's an image of the bullet patturn as I hold down the shoot button. It just looks like this, unchanging. I won't be able to hit the yellow object ever.
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Feb 7, 2010
has anyone found an AS3 source/Maths-lib etc that covers not just simple collision tests but swept collision tests (at least swept AABB/circle tests) for fast moving objects? I had a quick look at flixel but even that does not seem to have sweep tests for fast moving objects.
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Jan 22, 2009
I'm making a game where a character moves around a level and stays in the centre of the screen as the background scrolls past. I have created a movie clip of an enemy that moves up and down, and used hitTest to stop my character flying through the enemy and also to deduct a point from the score. However, if my character hits the enemy and stays underneath him, the enemy's movement pushes my character out of the screen, and you can no longer see him.
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May 22, 2010
I have got this annoying problem with Flash. Whenever I tween an object fast across the screen the part which points to the direction of the movement of the object gets cropped. Here is an example.The circle is moving across the screen roughly 3 times every second and as you can see, the front has magically disappeared for some reason. Same thing happens for objects moving slower aswell but the cropped off part is smaller. I could not printscreen this as the screen pauses on the current frame when you do that so that is why I used an external camera.
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Apr 28, 2009
The player chooses the right figure(A) and hits another figure(B) and then a movieclip should start to play.What happens is that if figure A is moved slowly to B the hittest seems to be not noticed - nothing happens.If the movement is normally or fast it works and the movieclip starts to play.
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May 12, 2009
I have an scrolling number of photos moving from left to right controlled by:
[Code]...
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Jun 13, 2010
ok here is the scene
_root.playa
_root.playa.feetMC
_root.corneria
_root.corneria.limitsMC
[Code]...
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Dec 17, 2009
My first post in Actionscript.org. but I'm a long time visitor / fan. I'm moving a object with mouse but using some easing values. means it will follow the mouse slower.
Here is the file.[URL].. How can i check hitTest in this situation. even if i do it normally...the object is passing the collision object simply before stopping..because its being moved with mouse..
[Code]...
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Mar 31, 2012
After read a lot about ball physics, watch some examples and few days of trying making pinball with bitmaps, I use simple (easy to work with) and fast performance Physics AS3 engine for bitmaps [URL] but still cant fix problem: if ball is moving too fast and object on path is too small, there will be no collision detection (code works perfect only with bigger objects or if ball is moving slower). I am not good at physics and maths. Here is function code which make physics for ball on every frame rate (but maybe its better to change it to setTimeout):
function showFrame(e:Event) // onEnterFrame{
var collisions:Array = collisionlist.checkCollisions();
if(collisions.length) // if collision{
var collision:Object = collisions[0]; // get collision information
var angle:Number = collision.angle; // get collision angle
[Code] .....
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Jun 29, 2009
Im trying to make a small game. Could someone take a look at the CS4 and CS3 fla files attached and tell me how to make the game reset when the red circle touches the block boxes.
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Feb 2, 2012
Basically what I'm looking to do is hitTest bullets inside an array (spawn via addChild -> pushed into an array) with another array containing ships (spawn via addChild -> pushed into an array as well).At the moment I have:
function moveEnemyLarge():void{
var target2:EnemyLarge;
for(var i2:int=0;i2<enemyShipArray.length;i2++){
[code]....
.. and a near identical function for the bullets (using variables: i, target).What is the easiest way for me to hitTest the objects within my bullet array with the objects in my ship array. Putting "target" in the PLACEHOLDER slot doesn't work, and from what I've seen some people will shove the one for() inside of the other.
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Jul 1, 2009
I have many black boxes fallling down and i want the game to reset when the black boxes touch my red circle. I used this code for my boxes:
ActionScript Code:
this.createEmptyMovieClip("canvas_mc",10);
myInterval = setInterval(addbox1,500);
function addbox1() {
[Code].....
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Apr 16, 2007
I want to make a hitTest functions that detects if a object is hitting any of several objects. Is there a way to do this? I thought I could do this with a array and for loop. But I think that will use to much CPU when this is loaded every frame. Is there any other way?
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Apr 19, 2012
I'm trying to get something quite simple to work, but can't figure out what's happening here. I have five identical MCs (Bat characters), and the user can drag a bottle to feed them.
There is a hittest object (called WormEat) inside the bat's head. When the bottle, which is attached to the cursor touches the bat's head, it toggles to frame 2 of the bottle, which should play an animation of the liquid going down to empty.
This code is all working fine, except that when the code toggles to frame 2 of the bottle, it remains static. The animated Movie Clip doesn't play.
If not, perhaps a Switch statement could work, but I'm not sure how to use that method with Hittest..
Code:
var DragArray:Array = [Bat1, Bat2, Bat3, Bat4, Bat5];
for (var i:int = 0; i < DragArray.length; i++) {
DragArray[i].addEventListener(Event.ENTER_FRAME, CollisionWorm);
[Code]....
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Jul 28, 2010
I'll try to make my question pretty short and simple.
[Code]...
So what I'm trying to do is make the character stop when it runs into something. I can do that, but it will only work for one "block" movieclip I put on the stage. What can I do to make this work for multiple "blocks"?
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Oct 25, 2010
I have several objects in a separate movie and want to perform a hitTest with them and my other object 'knexman' which is noted below in the script. Basically what's happening is that when I trace the output of the hitTest, it increments about 5 or 6 at a time with each enemy collision running into the knexman object. All I want to do is when objects run into the 'knexman', to increment and trace it by one. Once I get it to increment by one I can accurately conditionalize how many lives are left etc.
onClipEvent (load) {
function reset(){
this._y=0;
this._x=random(600)+300;
enemySpeed=random(15)+5;
this.gotoAndStop(1);
[Code] .....
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Dec 20, 2010
basically im trying this code code:
var cur:curFlap = new curFlap ;
var con:cont = new cont ;
Mouse.show();
[code].....
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Mar 24, 2004
I am trying to create a program using random motion of two movie clips and uses hitTest to determine whether the two objects collide with each other. I've gotten hitTest to work with the original movie clips, but when the user loads more movie clips (via a button and duplicateMovieClip):
[Code]...
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Dec 29, 2009
How would i make hitTest work better with a rotating object(AS2). Becase i have a circle and it if gets near the rotating object (actually pretty far away) it starts the script,(new x and y)
I think thats the rotation script, becuase i took a break for like 4 days becuase it was irritating.
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Apr 11, 2010
When I implement the hitTest all the objects stop flying. Is it becaus too much is happening and the CPU has to think - I don't think so - my game is so basic. By the way, somewhere along the line I will use loops and arrays but at the moment I know what's going on in my code.
[Code]...
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Jan 4, 2011
I'm actually working on a multiple collision detection in actionscript 3.0, using pixel collision for a game for my assignment, where an enemy patrols around and searching for the hero. So, i draw a line between the enemy and the hero, to check whether there's some collision happened between those two. if the line colllides with an obstacle such as wall, door, etc. enemy will not be able to see the hero. When i tried a single line collision with a wall (one object only) it works perfectly.
But here's the problem. For the multiple objects collision (several walls and doors included), i added those objects in an arraylist, When i used for loop to check the collision between the line and those objects in the arraylist, none seems to react , except the first object in the arraylist or index 0.
Is there any simpler way to do the multiple collision detection?
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Jun 16, 2004
I'm having troubles activating the HitTest, passing the objects name as a parameter through a global function. Let's say there is the following function on the main timeline:
[Code]...
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Feb 1, 2010
i'm not quite sure which forum to use, so therefore I post this discussion here. I want to animate an object that is turning 360 degrees around.
[Code]...
It does'nt need any navigation like this example, but it's going to just an animationmovie.This animation is going to be viewed on a widescreen tv. How do I make the animation fit the screen? I'm not sure which resolution the animation must be. I guess this has to match the resolution of the tv. But is it just as simple as changing the flash file settings in 1920 x 1080?
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Nov 25, 2011
I'm making a catching game and I only wanted the falling objects hit certain area on my catcher. My catcher is a girl with mouth open and I wanted the falling objects to hit only the mouth, not any other parts of her body like arms. So I made two objects, the full girl and just the mouth. How do I make the two objects (movieclips) move around with the mouse?I tried to embed one object into another but it didn't work....
This is actionscript I wrote so far:
package {
import flash.display.*;
[code].....
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Jan 16, 2012
I'm having a little problem with collision detection. I'm currently with very simple game, where the only thing that is off is the collision.I tried with hittestobject and (as I found) it checks for the outer layer (my objects are a circle, and a weird star), so this method was of no use to me. Then I tried with hittestpoint, and I found that it checks for the center of the objects, so game over happens only where the center of an enemy touch the center of my character.I know that I must have something missing and I found a lot of guides but all of them were with squares or with static objects
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Jun 11, 2010
I have a 2d plane rotated on its x axis, with 2d display objects I want to move around on the plane. Its pretty similar to a chess board [URL]..
The board is a rotated rectangle, and the pieces are just 2d display objects. Whats the easiest way to manipulate those objects so they appear to be moving on the board?
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Sep 1, 2010
I have this class named MovingObject which extends the MovieClip class. This class will be instantianted for several times. Inside this class is a Timer that handles the speed of the objects moving. There is another class called TheStage and this is where I will instantiate MovingObject (s).
public class MovingObject extends MovieClip{
public var tmr:Timer = new Timer(1);
public function MovingObject(){
[Code].....
Assuming that the code is working fine (I haven't debugged it), this makes the particles to move all at once. However after several seconds of running it, the particles seem not to be moving in synchronization with each other (because their distances between seem to get nearer).
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Apr 14, 2011
I have an array wich is filled with platforms that are supposed to move.
var MovingPlatformArray:Array = new Array();
for (var c:int = numChildren - 1; c >= 0; c--){
var child3:DisplayObject = getChildAt(c);
if (child3.name == "movingplatform"){
MovingPlatformArray.push(child3);
[Code]...
Right now I have 2 moving platforms in this array. But only one moves up and down. But they both register a touch with the birdie.
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Jun 23, 2009
I have a MovieClip on my stage. Inside the MovieClip there are a few buttons (all MovieClips also) and a mask layer to keep anything on the outside invisible.
Problem: My MouseEvent fires and should move objectA into position over objectB. All code in the script tells me it has moved. Tracing the x,y coordinates of objectA also tells me it has moved. The Alpha on objectA is 100% and it is positioned on the topmost layer beneath the mask layer. All this tells me that when the object moves, it should be visible on the stage (the event moves the object into the masked area). Testing disproves everything. The traces all tell me the object is where it is supposed to be but it cannot be seen. I don't understand this and it, amongst other AS3 hiccups, is seriously turning me off Flash as it seems to be a waste of time to try and learn as it seems like 90% of the scripts written will fail 90% of the time.
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Nov 3, 2011
Code:
var arrowleft_btn:Button;
var arrowright_btn:Button;
arrowleft_btn.addEventListener(MouseEvent.MOUSE_DOWN, startScroll, false, 0, true);
[Code]....
What I am trying to do to solve my first problem is have the image (which holds several smaller images in it) scroll across the screen when the user clicks on either the right or left arrow found at the top of the screen. If anyone is interested I can send them the file to have a look at? All of the instance names are the samer though, the arrows are buttons and the 'housecompilation3_mc' is a movie clip.
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