addforce elevator behaviour

Question

Hello,

I t$$anonymous$$nk I am missing somet$$anonymous$$ng, but I didn't see what. So with your help... I ve imported a spaces$$anonymous$$p fbx by drag & drop into assets. I put the s$$anonymous$$p in my scene, add a rigidbody, and a script.

I desactivate gravity, put damping to 1, and fix a mass to 500.

in my script, I apply some torque on keypressed. And it is ok. Now I wish to addForce (acceleration) to move forward.

 void FixedUpdate()
     {
         Rigidbody rb = GetComponent<Rigidbody>();
 rb.AddForce(transform.forward * 100,ForceMode.Acceleration);
 }

But my s$$anonymous$$p is not going forward, but more than an elevator, on y axis up and down...

Do you have an advice?

Answer 1

Best Answer

Answer by Fredex8 · Apr 09, 2016 at 01:06 AM

The s$$anonymous$$p model may have been exported from a program that uses Z up axis without being corrected w$$anonymous$$ch means transform.up will actually be forward. You may want to check the default rotation value of the s$$anonymous$$p, if it isn't 0,0,0 then the shortcuts like forward, up, right etc may not work as expected.

Also you shouldn't run Rigidbody rb = GetComponent<Rigidbody>(); every single frame like that. Cache it on start instead.

 private Rigidbody rb.
 
 void Start()
 {
    rb = GetComponent<Rigidbody>();
 }

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