ActionScript 2.0 :: Calculate Direction And Speed Circle Has After Colliding With A Static Circle?
Mar 8, 2005
What i need to know is how to calculate the direction and speed a circle has after colliding with a static (non-moving) circle. I know how to detect a collision between the two, but I'm not sure about the maths I need to give the circle the right speed and direction after the collision.If i do know how far away the two circle-points (in the middle of each) are to each other (in both x and y coords) would it be easy for me to find the new speed and direction of the large circle in the example above? I know that I somehow should use the angles to pretend the circle hits a flat "wall" (as it only hits one point), and then calculate the new speed/direction. My only problem is that I'm not sure how to decide the angle of this flat "wall" and how x and y speeds should change when colliding with a wall that is angled.
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Mar 8, 2005
I'm developing a game atm, and I need some help on the mathematics/coding of colliding circles (and their change in x/y speed). What i need to know is how to calculate the direction and speed a circle has after colliding with a static (non-moving) circle. I know how to detect a collision between the two, but I'm not sure about the maths I need to give the circle the right speed and direction after the collision
If i do know how far away the two circle-points (in the middle of each) are to each other (in both x and y coords) would it be easy for me to find the new speed and direction of the large circle in the example above? I know that I somehow should use the angles to pretend the circle hits a flat "wall" (as it only hits one point), and then calculate the new speed/direction. My only problem is that I'm not sure how to decide the angle of this flat "wall" and how x and y speeds should change when colliding with a wall that is angled. Does anyone here have any insight, links or tips on how I can du this?
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Feb 20, 2010
i have one problem. i create one circle and i placed more than one points outer of circle (the points are created dynamic).
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May 13, 2011
so basically I have a circle which I got to spin around and stop when the mouse is over it. However I now need it to also spin Anti-Clockwise if the mouse is near the top of the page and clockwise if the mouse is at the bottom of the page.
Can anyone help? I did the animation through tweening in flash so my code is tiny, but here's what it is. I'm new to flash so forgive me if I don't know what I'm doing.
[Code]...
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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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[Code]...
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Mar 16, 2012
I want to create circle, and put 8 points on it. So, user can drag each point in order to change it's shape.
Is there any way to do this in flash?
I have some following code:
Ref. - How to draw a continuous curved line from 3 given points at a time
package{import flash.display.Sprite;
import flash.events.MouseEvent;
import flash.geom.Point;
[Code].....
So, can anyone convert these three point curve line to 8 points circle?
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Oct 6, 2009
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Apr 10, 2010
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On my enterframe I have:
Code:
var xmov1 = xSpeed;
var ymov1 = ySpeed;
var xmov2 = ballRef.xSpeed;
var ymov2 = ballRef.ySpeed;
[code]....
Perhaps I'll go with a box2d equivalent instead of trying out my own physics shenanigans.
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Sep 19, 2004
Here I what i need is : Start drawing first circle and when first circle is on half way, Start second circle.same way second and third circles. and after completing 3 circles, just gotoAndPlay 2nd Frame .
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Feb 18, 2010
I have a simple three ring animation where the three rings fade in and out.On the stage the rings are a perfect circle, in the publish preview they look fine, but once I publish the SWF, all of the sudden the rings are not perfectly round anymore.
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Apr 26, 2011
I bought a Flash video tutorial online for Animating and the FIRST step is to create a circle with the circle tool, and the guy does it online, and it fills itself in. I repeat his actions exactly and I cannot get the same result at all. I just get a circle.
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Apr 5, 2007
I have two MC's, circular in shape. One of the circles is stationary and you can drag the other. I'm trying to get the moveable circle to be able to move around the circumference of the stationary circle, but not overlap. I'm able to detect when they overlap, not using hittest. I just can't figure out how to code it so that the draggable circle can't be moved over the stationary circle.
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Jul 5, 2010
Does anyone know of any tutorial or code example that deals with resolving circle-circle collisions including rotation?
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Jan 6, 2012
I have been trying to get this right for hours now it cant be as hard as I am finding it! but basically I have a circle and in that circle is a circle and all I want is for the inner circle to not be able to leave its parent. that's it but I just cant get it to work.
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[URL]
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var x2:Number;[code].............
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May 15, 2005
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CODE:
onClipEvent (enterFrame) {
//This code will advance the car forward.
if (Key.isDown(Key.UP)) {
speed += 1;
[code]....
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Jan 25, 2007
I have some code that works out a target speed based on how far right of the screen ur mouse is as follows:
Code:
if(this._xmouse > value1 && this._xmouse < value2){
//set targetSpeed depending on how much greater than value1 it is
targetSpeed = this._xmouse-value1;
}
Is there an elegant mathematical way to calculate the targetSpeed value so that - it increases as xmouse gets greater, until xmouse is at the value that is the midpoint of value1 and value2, from when on, targetSpeed decreases as _xmouse gets closer to value2. So if value1 = 500, and value2 = 600, then as xmouse goes over 500, targetSpeed will increase 0, 1, 2, 3, 4 - up to 50. then as xmouse goes over 550 targetSpeed will decrease until xmouse is at 600, by then targetSpeed will be back to 0.
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