Move object in rotating direction.

I have an object that is being rotated constantly, I want to move that object towards that moving direction on a mouse click.

Code (CSharp):

1. void Update ()
2.     {
3.         if (stationary)
4.         {
5.             transform.rotation = Quaternion.Euler(0,0, Mathf.Sin(Time.time * 2) * 60);
6.  
7.         }
8.  
9.         if (Input.GetMouseButtonDown(0))
10.         {
11.             Debug.Log("Button");
12.             stationary = false;
13.             myBody.velocity = new Vector2(transform.rotation.z , 10);
14.         }
15.  
16.     }

The code works, but the object always move up instead towards the direction it's facing, how to fix that?

 

What's the moving direction?

A rotating object doesn't necessarily have a 'moving direction', it's rotating...

A wheel might have a direction that results from when it touches a surface. But that's determined by the rotation when applied against a surface. A wheel rotating clockwise and laying on the floor may move right, but on the wall will move up, and on the ceiling will move left.

So, you need more information.

Or, do you mean something else. Like say it's an arrow rotating, and you want it to move in the direction the arrow points when you stop? Well, again, we need more information. What's "forward", the direction the arrow points when no rotation is applied. You then would have to rotate that direction about some axis (z?) the amount of rotation it is currently at.

If say the 'forward' is <1,0> at zero rotation, and the axis rotates counter-clockwise, it my be:
<cos(theta), sin(theta)>

But again, it depends on what you define as forward, what you define as the axis of rotation, etc.

 

If you want something like: an arrow rotating and by mouse click the arrow move in arrow-direction (forwards), use:

Code (csharp):

1.  
2. 13.      myBody.velocity = myBody.forward * moveSpeed
3.  
4. or
5.  
6. 13.      transform.velocity = transform.forward * moveSpeed
7.  

This works if your object is orientated forwards in the z direction. If your object is orientated in an other axis, you have to use transform.up or transform.left instead.

 

I tried this, but it doesn't go anywhere, it stays at it is:

Code (CSharp):

1. transform.Translate(Vector3.forward * 20);
2. And
3. myBody.velocity = Vector3.forward * 20;

 

Well did you tried myBody.forward or Vector3.forward, they are not the same thing. Also, with Vector3.forward your object should move on z.

 

Is there something called 'myBody.forward" ?! it keeps giving me errors, you do realise that "myBody" is a RigidBody, right ?

 

My bad, use myBody.transform.forward, or transform.forward of the object you whant to move

Code (CSharp):

1. myBody.velocity=transform.forward*20;

Also, if the rotation is weird, take note that forward represent a vector depicting the direction in 3 dimensional space your character is facing (assuming your character is setup where forward is initially along the Z axis). So take into account initial orientation.

 

This worked, Thanks very much