[RESOLVED] Slow rotation if my rigidbody have collider children

Hi, actually i've this script

Code (CSharp):

1. void FirstPersonShipManager()
2.     {
3.         //GESTION DES ROTATION\\
4.         float _RotZ = Input.GetAxis("Horizontal") * LateralRotSensivity * Time.fixedDeltaTime;
5.  
6.         Vector3 LateralRot = new Vector3(0, 0, -_RotZ);
7.         //Rotation AVEC rigidbody
8.         rb.AddRelativeTorque(LateralRot);
9.  
10.         transform.TransformDirection(LateralRot);
11.  
12.     }

Now, if the childrens of my object with rigidbody have collider the rotation become VERY slow.

It happend when my childrens does no touch the parent.

Somebody know why ?

 

What do you mean, the rotation is slow? Do you mean you expect the object to rotate faster than it does?

Code (CSharp):

1. transform.TransformDirection(LateralRot);

I don't think you want to modify the transform of the rigid body this way.

 

Hi, i found the solution during this night and finally i learn collider of children affect mass of parent.

It's very useful if you want realistic value but if you are in my case you have to do that :

1) Get the value of you rigidbody without children

Code (CSharp):

1.  
2. print(rb.inertiaTensorRotation);
3. print(rb.inertiaTensor);
4. print(rb.centerOfMass);

2) Edit inertiaTensorRotation - inertiaTensor - centerOfMass

Set the value you got instead of my value.

Code (CSharp):

1. rb.inertiaTensorRotation = new Quaternion(0,0,0,1f);
2. rb.inertiaTensor = new Vector3(4.2f,4.2f,4.2f);
3. rb.centerOfMass = Vector3.zero;