ActionScript 3.0 :: Change The Frame In The MC Math.atan2 According To The Direction It's Facing
Dec 14, 2009
I've got a movieclip which follows a predefined path (like in those tower defense games). Normally the mc changes the direction it faces with Math.atan2 method and then rotates the movieclip, but because this game is in a tilted view( in stead of directly from the top) I need it to change the frame in the MC according to the direction it's facing.
Is it possible to read out Math.atan2 method data, and then change the frame the MC is displaying, according to this data? I used [URl]...on-and-realism as a base for this game. If Math.atan2 method
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Mar 31, 2004
Code:
function rtd (rad) {
return rad*(180/Math.PI)
}
trace(rtd(Math.atan2(0,10))) //supposed to be 90 degrees but it return 0
trace(rtd(Math.atan2(-10,0))) // supposed to be 180 but it also return 0
what to do?
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Sep 25, 2009
wat's the difference between finding a angle using Math.atan2(y,x) function and by finding using the movie clip's rotation (mc._rotation*Math.PI/180);
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Sep 16, 2011
So let's begin. I want to build a wheel which you can spin, similar to a roulette wheel. You can do this both ways (CW and CCW, this issue causing the bug, actually). The wheel has some acceleration to it too, and I achieve this by measuring the start and final angle of the drag movement, using Math.atan2(dy, dx). The problem is the following: atan2 outputs the following angle scheme, assuming the point relative to which the math is done is in the center of the circle.
atan2 returns a value measured in radians, so I'm using the classic angle*180/Math.PI formula. I've changed this original scheme into the following, using some simple math to shift the angles a bit, to resemble more accurate circle angles (going up to 360 degrees) The problem that I'm facing at the moment is should the user decide he wants to swipe clockwise, and moves through the right point, where 0 turns into 360 or 180 turns into -180, the whole angle difference thing is capsized. It registers a CCW movement (as if the user swiped his mouse all around the circle). So, I'm looking for some ideas as to how I can work around this small issue.
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Feb 3, 2009
Basically after adding an object on stage (using actionscript), it will be situated at a random rotation angle using:
this._rotation = Math.random()* 360;
After that, I want my object to move in the direction that it is facing, (using onEnterFrame?). How do I do that?
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Dec 2, 2011
I want to know if there's a way to make a symbol move the direction it's facing.I have a character which rotates when you press Left/Right:
if(Key.isDown(Key.LEFT))
{
_rotation -= 15;
[code].....
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Sep 17, 2010
I have this code to add my missile to the screen PHP Code:
[Code]...
it adds right where my character is but I cant seem to figure out how to get the missile to actual move in the direction the character is facing. heres how it looks [URL]
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Feb 5, 2010
I'm building a simple 360 degree image rotation effect using single frames and forward and back buttons. I'm new to AS3 and have managed to create functioning buttons... (so my code may be a bit odd!)But now I also want to advance frames by clicking and dragging on the image itself (or on an invisible button sat on top of the image).Although there are some threads here which have asked the same thing, I don't understand how they were answered. My code is below, and the file I am practising with is on:URL...At the moment if you click on the image area it will advance but as there is no code detecting mouse direction, it just goes forward. Can anyone help me understand how to implement a simple direction detection and then use this to decided whether to advance or go backwards.[code]
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Aug 5, 2010
I have a MC that can be moved around with the arrow keys. When a person presses the left key I want the object to face left and perform an animation for as long as the left key is pressed. When the left key is released I want the animation to go back to it's starting frame but the MC should still be facing left. I want the same thing for the other arrow keys, but the animations will be different for each direction (for example: walk right, walk left, walk away from you, walk towards you).
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Sep 11, 2009
With mx:Box I can set the direction to be either "horizontal" or "vertical". I'd like to reverse the order of the components in the box though. For example:
Before:
|button1| |button2| |button3|
After:
|button3| |button2| |button1|
I've created a custom component that lives in a mx:Box and would like to do this in as simplest a way as possible.
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Dec 24, 2011
how to convert it to 0 and also if the number wsa 9, convert it to 1, and if it was 8 it gets converted to 2.. and so on.. where if it was 0 it would then be 10 Is there a formula? The 0 to 10, and 10 to 0 may not be possible but that's ok.
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May 3, 2010
I create a TLFTextField object at design time and need to change its direction at runtime, how this could be possible? the following code did not work and simply ignored: var myText:TLFTextField = MyText;myText.textFlow.direction = "rtl";
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Jul 15, 2010
I want to change the dropdown driection of the calender of datefield.since my width of the application is small.and also i want to reduce the size of the datefield's calender control.
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Nov 17, 2010
Is it possible to conditionally change the direction of a for loop in ActionScript?
Example:
for(if(condition){var x = 0; x<number; x++}else{var x=number; x>0; x--}){
//do something
}
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Feb 12, 2003
how I change the direction of a movie clip. And how to make it change in the same it's moving.
I have random movement code on the clip, I just want it to rotate, in the direction it goes.
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Mar 10, 2009
function moveStuff(){
if(Key.isDown(Key.DOWN)){
this._y += 5;
}
if(Key.isDown(Key.UP)){
[code]...
thats my basic Arrow key functions to move a movie clip lp_mc is my character in the left position so when left key is pressed it moves forwards but when right is presssed it moves backwards... i have a movieclip called rp_mc which is the same thing but facing the other way when right is pressed how do i swap the lp_mc for rp_mc so it changes direction?
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Mar 30, 2010
How could I get an object to follow the cursor and rotate to change direction as the cursor changes direction?
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Nov 15, 2011
i'm trying to animate a movie clip by subtracting from its y value and then when it reaches a negative value change direction and animate by adding to its y value until it's back to 0 and loop back and forth. what i have isn't working.
Code:
function Bodyloop(e:Event):void{
var direction:Boolean;
if(body.y > 0){
[Code].....
when it reaches -500 is jumps back and forth.
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Oct 14, 2009
Does anyone know the formula to determine what the width of a Sprite would be based on changes to the z-axis? I know the width property is updated after the change, I'm hoping to know what the width will be pre-change.
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May 26, 2009
Code:
animator = createEmptyMovieClip('animator',1);
bg_1 = animator.attachMovie('bg_mc','bg_1',1);
bg_2 = animator.attachMovie('bg_mc','bg_2',2);
[Code]....
how to get it to go from left to right, rather than right to left as it does now. Been messing with it for a while and have no idea what to do.
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Oct 20, 2010
what i have is a circle image (for this purpose lets say it looks like a clock). For example: when you click 3 o'clock, the whole clock needs to rotate around with the 3 o'clock btn at the 6 o'clock position (with the pivot point in the centre). each of the 'time' positions (2 o'clock, 3 o'clock, 4 o'clock ...etc) needs to be a button and thus be able to rotate around to the 6 o'clock position.This would seem simple enough by just using a.rotate value or using tween movieclips...however the tricky part is:the actionscript needs to determine which way the clock turns (anti/clockwise), dependant on where the clicked time-btn's position is. it needs to be some sort of if statement that says:if (3'oclock-btn) is positioned between 0 degrees (being original 12'oclock position) and 180 degrees (original 6 o'clock position), then rotate clockwise to the 6 o'clock position. If the (3o'clock btn) is positioned between 180degrees and 259 degrees (12 o'clock position), rotate anti-clockwise to the 6'oclock position.
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May 19, 2010
I want to make a movieclip moves smoothly and when it changes the direction, it can turn smoothly but not a sudden turn, I try out the code below. and the truning is odd:
this.rotation = (Math.atan2(targetY-this.y, targetX-this.x )/Math.PI)*180;
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Oct 18, 2010
I want to change the TLF text fields direction dynamically.
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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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Oct 24, 2010
But I have a simple problem I think.I have a moving panel of images, and I want to be able to change the direction of the panel with the click of a button. Here's what I have so far:
var panelSpeed:Number = 1;
var leftDirection:int = -1;
var rightDirection:int = +1;
[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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Jun 1, 2008
I have a embedded video animation clip that I need to control the speed it plays.The animation is of a ball spinning and when its rolls long X access i need the animation to move at the speed of the mc moves and slow down at the same rate.dose anyone know if I can control the frame rate and speed of a mc and the direction which is plays?any other option is to rotate an png but the problem im having with that is: when i import a circle png and brake it apart then remove the extra parts of the image leaving just the circle and have it aligned to the center. when i rotate it and move it along the X access base of the height of the mc it bobs up and down like this still counting the removed parts of the png in the
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Mar 22, 2006
I'm trying to set up a script which would force an object to move through the stage until a particular point and than change direction. I wrote something like that:
onClipEvent (enterFrame) {
moveUp = function () {
this._y -= 1;
if (this._y<-30) {
this.onEnterFrame = moveDown;
}};
moveDown = function () {
this._y += 1;
if (this._y>600) {
this.onEnterFrame = moveUp;
}};
this.onEnterFrame = moveUp;
}
But it doesn't work. the object moves only one direction and does not change it.
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Mar 30, 2010
Random Movement: Flip horizontal on direction change along x
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Mar 31, 2010
[I am using one of the Random Movement Tutorials and as my moving object have a front and a back I wish them to flip horizontally when the change direction.They currently start face left and start moving left, when they start moving right I wish them to flip horizontally.[code]
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