Adjusting Roll and Pitch with Velocity

1. I'd like the roll and pitch of my submarine to react to changing direction. Going back-and-forth changes the pitch; side-to-side changes the roll.

2. I have the following code that lerps between a x and z rotation as a function of x and z velocity

Code (CSharp):

1.         xVelocity = rigidbody.velocity.x;
2.         yVelocity = rigidbody.velocity.y;
3.         zVelocity = rigidbody.velocity.z;
4.  
5.         maxXVelocityPercentage = Mathf.Abs(xVelocity / maxXVelocity);
6.         maxYVelocityPercentage = Mathf.Abs(yVelocity / maxYVelocity);
7.         maxZVelocityPercentage = Mathf.Abs(zVelocity / maxZVelocity);
8.  
9.         activeXAngle = Mathf.Lerp(0, maxXAngle, maxXVelocityPercentage);
10.         activeZAngle = Mathf.Lerp(0, maxZAngle, maxZVelocityPercentage);
11.  
12.  
13.         if (xVelocity > 0)
14.             activeXAngle = -activeXAngle;
15.         if (zVelocity > 0)
16.             activeZAngle = -activeZAngle;
17.  
18.         transform.localEulerAngles = new Vector3(activeZAngle, 0f, activeXAngle);

3. Works great when the sub is straight in the scene, however, if not, then the sub starts reading any movement as contributing towards the z velocity and giving me weird rotations.

4. Is there a way to localize velocity? Or a better way of doing what I'm trying to do?

Thanks!

 

Please see the forum sticky post about using code tags.

 

Sorry about that. Should be fixed.