Actionscript 3 :: Rotating Towards Another Moving Object
Feb 25, 2011
im having trouble getting this rotation function down pat. i have a turret that should be rotating towards another moving object. it should find the shortest direction to rotate. basically what ive done is converted action script rotation from using -1 -> -179 to 180 -> 359. but now im having issues when the object it is tracking passes over the zero degree point. the turrent then rotates around the other way. here is the code. my mind is getting a little boggled. it is being passed the x difference between the objects, and the y difference
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Apr 16, 2011
I have a problem with rotating and moving my map. I need to spawn buildins along the road and move them. Check the picture. What I want to do is have my player in the middle and rotate the map randomly while the buildings are sliding along the road.
imgur.com/14Ha6 <- Link to the pic
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Feb 21, 2011
I am in the midst of finishing up a design application where you can upload images and colors. I use the greensock transform manager. I am taking anything a user does and recording it so I can recreate what they made on larger scale behind the scenes (to be exported for printing purposes)
The problem I am running into is with rotation and moving x and y values. The transform manager does everything relative to a center point, but when i recreate the image object the registration point is at the top left. I have found how to rotate around the center of the object using the transform matrix, but I can't seem to move the x and y correctly because these values change when you rotate. I want to just move the image to the left or right relative to the center. How could I go about doing this.
Here is how I rotate.
private function rotateAroundCenter (ob:*, angleDegrees:Number, ptRotationPoint:Point) {
var m:Matrix=ob.transform.matrix;
m.tx -= ptRotationPoint.x;
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May 27, 2011
There are a couple of problems i'm having with this - the first is how to work out how to find where the tip of each sine curve is (ie the frequency) and the second is to work out how to rotate each object so that it slides sideways along the sine wave(note file is 800 x 600)here's my code: CarouselTest.as:
package
{
import com.greensock.easing.Sine;
[code].....
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Jun 30, 2011
i am currently having trouble with my object rotating to face another object.currently it works fine as in this picture, my object at the origin will be able to rotate and move to the object in the 3 quadrants except the quadrant with positive 90degrees to 180 degrees, my object will rotate a few full rotation for some time while moving to the object does anyone know why? the sentence that i use to rotate is rotation += (foodLocationDegrees - (rotation - 90)) * .2; whereby food is calculated using
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Oct 29, 2003
how can i grab an object and rotate it with an object which is on it rotating [meaning that the second object is on the same possition on the first object?] can i make it being horizontal all the time?
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Jun 28, 2011
currently i have a function in which my object fish will move to a food i am having trouble getting it to rotate nicely to the food currently my function is as below.if the food is above the fish my fish rotation is 0 which is facing up, if the food is below my fish i will give it a rotation of 180 which will make it face down , however the rotation is too sudden it does not give a nice and realistic effect of rotating to the food.how can i make it when rotating to move some distance and at the same time rotate? because it cant rotate to the food in the same spot as it would not be realistic.
public function moveToFood():void
{
var foodTarget:Food = fishArray[fishArray.length - 1];
[code]......
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Feb 23, 2012
I am trying to do a apply a tween for the width property on a MovieClip Object but every time it changes the width and the position too, and I don't want that. I want to change the width going to one side without changing the x and y of the object.
I tried both of thes and they gave the same result.
var c:Tween = new Tween(left, "scaleX", Strong.easeOut, 1, 1.5,20,true);
var c:Tween = new Tween(left, "width", Strong.easeOut, 20, 200,20,true);
I think it is applying the transformation according to a center of the movie clip. but I don't know how it can be changed.
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Apr 13, 2011
Im working on a small project and it involves a guy which you move with the arrow keys. The arrow keys add to his x, y velocities and his position is updated accordingly. How can i get this man to grab onto an object and spin around it (like when you grab pole and letting your momentum swing you around) . I can make him grab the object but I dont know how to modify his x,y speeds to simulate the arc.
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Sep 17, 2009
I am trying to get an object to rotate similar to the globe on this sitei have found the
code:
onClipEvent(enterFrame){
_rotation += (Math.floor(180*Math.atan2(_ymouse,_xmouse)/Math.PI)+90);
[code].....
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Jan 24, 2010
I am using FLASH CS4 and would like to know how to rotate an object?
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Nov 18, 2002
Im making a clone of lunarlander in flash mx and i cant quite figure out how to make the ship's movie clip rotate left and right.How can i make a movie clip rotate left and right?
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Oct 13, 2010
my title explains what im need but im using flash cs4 and heres what i have so far:
var centerX:Number;
var centerY:Number;
var centerZ:Number;
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ok so RBall is my first moving object and my orbiting object will be called orbit
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Aug 16, 2010
Without adjusting the fps how would I slow down an object that I have rotating CW 1 time?
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Oct 11, 2010
I am working in AS2 and I have a flash project that is almost complete but I would like 1 thing modified.I have a fish image following my mouse.
(script below)
onClipEvent (enterFrame) {
_root.yChange = Math.round(_root._ymouse-this._y);[code]...........
The problem is that I would like the fish image to "turn" and face the direction of the mouse. Currently, as is, the fish follows the mouse fine when the mouse is moving to the right, but when it goes to the left the fish swims backwards rather than turns and swims the correct way following the mouse to the left.How would I modify the script to get the fish to turn and always swim forward when going left and right?
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Oct 23, 2011
I'm a beginner at this, so this may sound like a dumb question, but I don't have the time to figure it out on my own.I'm trying to get a group of symbols to remain in the configuration that they are in, but rotate around a fixed point, and actually make them move in this circular path instead of a straight line.
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Aug 29, 2007
Ok so I'm a noob when it comes to Flash so this may be really simple but then again it could be extremely difficult I don't know. I need to create a Flash document that contains an object that can be rotated 360 degrees using a scroller using pictures of the object probably in jpeg format.
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Apr 8, 2004
I need to get a certain object to rotate by set degrees (my navigation for this project is organized on a wheel--6 sections on the wheel), and I would like to have buttons that tell this object to smoothly rotate by set degrees (intervals of 60 degrees in this case).
What I have in mind are 5 buttons that control the rotation:
1. 120 deg. ClockWise
2. 60 CW
3. 60 CCW
4. 120 CCW
5. 180 CCW
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Sep 15, 2007
I wrote some code for the thing I was working on, yet the problem is that when you grab the wheel and spin it again, I want it to stay in the same position and rotate instead of reseting.
(The holes are markers)
I don't mind if you just want to upload it. But if you do, follow my method (I don't know, say for example using masks or something), and just add new variables if needed.
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Jul 4, 2009
On the web there's a bunch of tutorial on how to rotate an object around a point ,or a stage axis..But how do we rotate this object around its own axis?
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Apr 8, 2004
getting a certain object to rotate by set degrees (my navigation for this project is organized on a wheel--6 sections on the wheel), and I would like to have buttons that tell this object to smoothly rotate by set degrees (intervals of 60 degrees in this case).What I have in mind are 5 buttons that control the rotation:1. 120 deg. ClockWise2. 60 CW3. 60 CCW4. 120 CCW5. 180 CCW
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Oct 4, 2010
I want to rotate an object using the arrows on the keyboard when the mouse is over the object and it should not be possible to rotate the object when the mouse is not on the object. I know how to rotate the object, when the mouse is over the object, but when I put the mouse outside the object I can still rotate the object. How do I make the rotation stop?
[Code]...
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Oct 13, 2010
I am trying to make an object smoothly rotate towards the mouse.
ActionScript Code:
var rot:Number = 0;
var smoothing:int = 5;
stage.addEventListener("enterFrame", step);
function step(e:Event):void {
// point_direction is a function I have created that finds the angle between 2 points. I know this functions works as it is supposed to
rot = point_direction(obj.x, obj.y, mouseX, mouseY);
obj.rotation += (rot - obj.rotation) / smoothing;
}
This code works, except when I pass the mouse over the center of the object on the left side it seems to spin the long way around. So if I move the mouse down the center of the object on it's left side, it will spin a long way counter-clockwise to reach the mouse instead of the tiny length if it had spun clockwise.
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Oct 19, 2011
i have a movie clip calle "A" i want to rotate it around its individual axes....xand y seperately the following script rotates the entire movie clip
_root.A._rotation+=50;
but say i just want to rotate the x axes and not the y..how do i do it?
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Jun 14, 2005
I'm working on creating an animation in which there are insects randomly moving around - based on tutorials on this site. Does anybody know how to make the insect rotate so that it always points towards the direction of travel.here's what's on my movie clip:
Code:
onClipEvent (load) {
scale = (random(100)+50);
this._alpha = random(50)+20;
this._xscale = scale;
[code]....
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Jun 9, 2007
I'm using the mc_tween2.as tween class and the slideTo method for moving objects around on the screen.
What I'm trying to do is to have the objects rotate "x" degrees when clicked. Right now, they move, let's say, 20px across the x-axis. But I want it to move 20px while rotating 15 degress clockwise. Is that possible using this method?
I know there's a way to rotate objects using the _rotation feature, but that doesn't move it using any tweens; it just "snaps" it into place. I'm looking to rotate the object using a tween, while sliding sliding around using the slideTo method.
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Jun 12, 2010
I have one sprite that I can rotate freely, and a second one that rotates based on the first. So, for example, Sprite A is rotated from 0 degrees to 70 degrees. I want Sprite B to gradually adjust its rotation to match A's using the shortest path. (Rotate clockwise 70 degrees, rather than rotating CCW 290 degrees.) I'm intending for it to re-calculate the shortest direction on the fly, so using the previous example, if Sprite A was 70 degrees, and B was rotating toward 70 and currently at 50 degrees, and I suddenly rotated A to -20 degrees, B would switch directions rather than take "the long way." (This part I should be able to figure out on my own once I understand the basic method, I'm just including it to make sure my intentions are clear.)
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May 15, 2005
Given up on the other thread, others tell me its gonna be quite a bit of hassle!What I want to do is as follows; I want a vinyl record on the stage to begin slowly rotating, until it hits full speed, on a mouse click. All automatic.I imagine this will involve adding a speed number to a basic rotation script. When it hits a certain speed, I want an event to be triggered.
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Sep 6, 2009
I'm trying to project "collision" points on a car for a racing game I'm making, similar to this image:
The car's registration point is the bottom center, so the bottom point is easy to place. It's also easy to get the top point using simple trigonometry. However, I can't seem to figure out how to project the two side points. I've tried drawing a bunch of different triangles to figure out how to project the points, but I can't get it to work
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Oct 2, 2010
I have a question concerning the use of the matrix objecThe following code works well to rotate the sprite from its center if its x and y properties don't change.However, if I drag and drop the clip somewhere else after having rotated it, and then add a new rotation, it keeps rotating from the previous rotation point. Even if I add point =new oint(myspr.x+myspr.width/2, myspr.y+myspr.height/2); in a function that is called at the end of the drag and drop, the rotation point remains the same.So,how to update the position of the matrix rotation point if the x and the y of the clip change on the scene after a rotation?
Code:
var myspr=new Sprite();myspr.x=100;myspr.y=100;addChild (myspr);var point:Point=new Point(myspr.x+myspr.width/2, myspr.y+myspr.height/2);rotateAroundCenter(myspr,45);
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