Issues about colliders (rigidbody)

[system]

Hello, I’m creating a racing game but I’m having a problem on my colliders, I experimented on colliders and worked out with this setup.

Car:
Rigidbody, Mass:1500, Drag: 0, Angular Drag: 0
Box Collider, Material: Metal

Bridge:
Mesh Collider, Material: Wood

First problem is whenever i pass through the bridge i got this shaking movement on my car and it inclined to the left.

Second, I placed box colliders on each side of the bridge so that the car wont fall. Once the car collide on this colliders sideways it works but I can pass through it if I intentionally go to it perpendicularly.

Can someone help me?

[Steven-Walker]

Based on the comments above, I’d venture to say that your problem is applying transforms to the car rather than using the rigidbody. Collisions won’t work correctly if you transform the object. Instead, use rigidbody.MovePosition()

http://unity3d.com/support/documentation/ScriptReference/Rigidbody.MovePosition.html

It might be as simple as a one-line code change, though could be more involved based on what else your script does:

rigidbody.MovePosition (forwardSpeed*Input.GetAxis(“Player1Forward”))/800,0,0);

[system]

I am trying to work on rigidbody script i removed the issues on the floats and ints though i have another error

Object reference not set to an instance of an object

here is the script

var target : Transform;

private var speed = 1;

function Update ()

{

var forward = Vector3(speed*Input.GetAxis("Player1Forward")/800,0,0);

var back = Vector3(0,Input.GetAxis("Player1Back")/200,0);

var slow = Vector3(speed*Time.deltaTime*1/10,0,0);

rigidbody.MovePosition (rigidbody.position + forward);

rigidbody.MovePosition (rigidbody.position + slow);

rigidbody.MovePosition (rigidbody.position + back);

transform.Rotate (0,0,Input.GetAxis ("Player1Horizontal"));

}