ActionScript 2.0 :: Finding (X And Y) Coordinates For HitTest
May 5, 2010
I have a line dynamically drawn in a coordinatesystem. The line is drawn by the user. Now I wonder if there is a way to find out where the line crosses the y-axis. I know about hittest but how can I get exacltly where (x- and y-coordinates) for the hitpoint?
I'd like to use the x and y mouse coordinates as variables in a program. I'm very new to Flash and ActionScript and I'm not even sure which classes I need to import or which listeners or handlers I need to use.
We have a client server architecture where a C++ server talks to Flash clients. I'm developing the server and would like to send through tcp an xy coord to simulate a button press where the receiving flash client would find the topmost visible object at that coord and send a mouse event to it such that we could simulate play without a human present. I'm told this is incredibly difficult, but it seems to me that there must be a way to do this. Am I off the mark? Or is there a mechanism in flash to iterate through all objects regardless of parent child relationships to find a visible button at an x, y coord and signal a press event?
I have made a few posts now, and I'd like to especially Prid for not only answering them, but for giving me guidance on how to learn AS2. I am progressing very nicely, and have made a couple of simple games without any tutorials, but theres one thing I couldn't find. I have this character which can move, up and down, left and right. I also have an enemy trying to shoot at him. However, this enemy needs to know where the character is. I already have the shooting code (Prid), but it was for shooting in the direction of the mouse. What I need now is to replace the bit of code that finds the mouse coordinates with code that finds the coordinates of the player.
The shooting code is on the frame (doubt that is important to say, but still) and the instance AND name of the Character is, well, Character. So basically, I need a code to calculate coordinates of a movie clip that does not have a fixed position. Oh and one more thing, should I post simple stuff like this in the beginner section, because I've seen waaay more complicated stuff there than in the AS2 section.
what i am trying to do is find the coridanates of anywhere there is the color red and save this in 2 variables. one for the corodanets of the color on the x axis and one of the corordonates on the y axis.
I get the feeling the title is misleading... What I try to achieve is quite simple (at least it sounds like a simple thing to do). I am trying to find the intersection of 2 objects in relation to each other. One of them is the character for my game, and the other is the obstacle (the floor, a barrel, etc). I need to find the coordinates of the character in relation to the obstacle. Here's a picture to make it a bit clearer:
Here the coordinates (and the cross) represent the origin of my objects, and the two squares are my character (twice to better represent the multiple possibilities). The number after the slash for the square is what I should get as the .x when my character hits the obstacle. I tried using getBounds(), but I really don't know about it and tried stuff based on the little knowledge I have about it (I won't post the code here, first it was horrible, and it also didn't survive the rage I had trying to get this to work...).
i have a game in which the character shoots bullets and kills enemies and whatnot. Now, i am trying to get the bullet to disappear when it collides with a wall.[code]when the bullet goes out of bounds, the bullet disappears, but when it hits the enemy or wall, it seems that the collision is not detected. I have checked each instance name and linkage, but have so far come up with nothing.
I'm in the process of making a board game in Flash; as part of process of getting fully to grips with Flash AS3.
I have a JPEG of the original board. This contains ~ 1000 circles that players may move pieces between. Pretty standard board-game stuff. The circles are not in any way regularly spaced.
So far, I've drawn the circles in Flash, by hand, and positioned them where they need to be. This looks great - I can see all my places.
What I want to do now is create these circles programatically. I want to be able to do this so I can adjust how the spaces look (depending on game state). Eventually I'll want to be able to zoom / pan the entire game board as well.
My question is, is there a way of tagging each circle with a unique reference and then looping through and recording locations?
I'm thinking something a bit like the Javascript DOM "getElementsByTagName" or similar.
At the moment I can only see two options:
Convert each circle to a symbol and give it a unique class name so I can access it from code Go through and write down the X/Y of each circle (add to my DB of board locations that I already have) so I can plot them programatically
I've got 30 movie clips on the stage and I want to see if any of them are overlapping a drop point I have at the bottom (i.e., if any of them have been "dropped off".)I could say dropPoint.hitTestObject(obj1) and then dropPoint.hitTestObject(obj2). (Assuming that because of the object's names there is is no way to do a for loop). But that's a lot of code.It would be way easier if I could just say "What object is overlapping dropPoint?" instead of "Is object 1 overlapping dropPoint? No? Well, is object 2 overlapping dropPoint?" etc.
i've been working on a problem for a while now, which involves targeting the closest movieClip in relation to the x y coords of the mouse, I've attached a nice little acompanying graphic.Each mc added to the stage has it's own sub-class (HotSpots) which uses Pythag to measure distance from mouse. At this stage i can determine the closest value from my Main class but can't figure out how to reference it back to the movieclip... hope this makes sense. Below are the two Classes.My Main Class which attachs the mcs, and monitors mouse movement and traces closest value.[code]
I have a Movieclip (MC1) with and moving object (OBJ1) inside it and using AS3. I want to do a hit test on it with another object (OBJ2) that is on the stage. Normally I would just do MC1.x + OBJ1.x to get my coords for the hit test. But how do I do it if MC1 has been rotated?
Imagine two movieclips, both on the same Y axis. I want one MC to be able to diagonally move to the other MC X axis, all while making a perfect diagonal line until it reaches 100y. So just like this picture, that MC moves in a perfect diagonal until it matches the other MC.x, and 100y (no matter what, it can't go past 100y but must equal 100y). I probably made it sound more complicated than it is.
I was trying to convert global coordinates to local coordinates of a UIComplenent in my flex project using below code using below code
var gp:Point = new Point(e.stageX,e.stageY); //global point var lp:Point = uic.globalToLocal(gp); //local point
uic is UIComponent in which I have subclass of Sprite for drawing something I have set the sprite's mouseEnabled and mouseChildren to false to not interrupt the mouse event. above code is within uic's mousemove event where I was tracing the gp and lp gp was giving correct value and suprisingly lp was giving negetive values. when I move the move to the top left corner of uic i expect lp to be 0,0 but it is giving the -width of of uic. I broke my head for hours and ended up finding an alternate by using offsets. Infact my original code was much simpler like this which was same issue
var lp:Point = new Point(e.localX,e.localY);
I am not sure what exactly is causing this problem. the workaround had lot of issues and it creating a mess in my rest of the algorithms.Just now I found even more interesting thing (which is actually weird). for some reason I went and create a new lp2
var lp2:Point = new Point(e.localX,e.localY);
now surprisingly it was giving correct values as expected and I went back and changed the code as
var gp:Point = new Point(e.stageX,e.stageY); //global point var lp:Point = uic.globalToLocal(gp); //local point var lp2:Point = new Point(e.localX,e.localY); var lp2:Point = uic.globalToLocal(gp);
now it is expected to have all the lp, lp2 and lp3 variables to be same but weiredly lp two is giving wrong value and lp2 and lp3 were giving correct. I am suspecting using the variable lp has something to do. I am not sure about that but above proves it so right now I am using lp2.
I was reading the 'Isometric Transformations' tutorial by Danko Kozar and I have a few questions. I understand what all the code does, but not how it does it. First of all, how does the following code work:
transforms x,y,z coordinates into Flash x coordinate xFla = function (x, y, z) { // cartesian coordinates[code].....
I understand that it converts 3d coordinates to 2d coordinates, but I don't understand how. What numbers whould be punched into x, y, and z to acquire certain desired effects?Also, what's the difference between moveTo and lineTo:
red line style(1, "0xFF0000", 100); plot(0, 0, 0); draw(200, 0, 0);
Im making a little app in flash using papervision I want to make a regular movieClip show up in the same place as a papervision object. The coordinates seem like perspective is affecting the number displayed.
i just would like to know how to create an "hitTest" script inside a movieclip that is actually part of that hitTest code?I mean... I have mc A, and mc B. and the current hitTest code im using (that is on the timeline) makes mc A, destroy mc B when collide with it... but there are many mc B on the stage (with the same instance name) so, when mc A collide with one mc B, it destroys ALL mc's B... but i want it to destroy only the mc B that he collides, not all the others... maybe an hitTest script inside a movieclip B would work (somethig like "if MC A hitTest ME = i die" (not all the others)).
i am controlling a tractor mc with right and left keyboard keys and let the user move the tractor till it reach a certain point where it touch a mc i want to go to a certain frame and stop the keyboard event listener and also the hit test listenerso finally the tractor is moved by user till it touches the mc then we will jump to a certain framethis certain frame will not have both of the tractor and the mcPHP Code:
I need to find an instance of a movieclip that is on my flash file. It is really big and uses a lot of memory. It says on the number of times used that there is one instance of the object on the flash file, but I can't find it. I thought I deleted them all but there must be one left. How do I go about finding it? It's a really large flash file with many layers, and I don't want to just delete the library file. Is there any way I can find where the object is placed in my file?
This should be a simple one. I am running an IF statement that needs to check the 5th value in a pre-populated array. I'm finding it hard to find the right method of searching the array.
[Code]....
indexOf seems to just return where the value is...but I already know where it is! I just want to know WHAT it is! There will also be values that are exactly the same in other positions in the array. I have to focus in specifically on the 5th value.
I need to break a number down to be represented by a randomly ordered sequence of 2s and 3s.[code]I'm currently doing this with a loop in ActionScript 3 but have been looking into the possibility of using some kind of mathematical formula to save me a few lines of code. I'm a bit of a sop when it comes to Math and I've not yet found anything suitable.
At some point I will have created a MC on the stage. Later on, I want to put a different on in its place. The original MC may, or may not, be there.So I need to first check and see if it is there, whack it if it is, then add my new one.I know the name of the variable I used to create the MC, but I think the problem is I did this from INSIDE another clip. When I am trying to find it and remove it, I am outside that clip, so I don't think the main timeline knows of that variable. So when I try:if(ribbonEGM) removeChild(ribbonEGM);[code]How can I test and remove the ribbonEGM clip from the main timeline?
My main loads an external swf. Then it creates a bunch of ball movie clips on the stage. I need to reference the content from labeled frames in the external swf. In AS2 all you had to do was use _level.