Jump using Rigidbody not working (C#)

Unity Engine
1

I don’t really see a problem with the code, and there aren’t any errors in the console. But whenever I try to jump, nothing happens. Any suggestions or help would be awesome! :slight_smile:

private CharacterController controller;
    public float speed = 6.0f;
    private Vector3 moveDir = Vector3.zero;
    public float jumpSpd = 200.0f;
    public Rigidbody rb;
    private float gravity = 9.81f;

    void Start(){
        controller = GetComponent<CharacterController>();
        rb.GetComponent<Rigidbody>();
    }
   
    void Update () {
        Move ();
    }

    void Move(){
        //makes the Vector3 use the WASD inputs
        moveDir = new Vector3(Input.GetAxis("Horizontal"), 0,Input.GetAxis("Vertical"));
        //creates a transform out of the input
        moveDir = transform.TransformDirection(moveDir);
        //controls how high or low the transform #'s are
        moveDir *= speed;
        //push down at a constant rate
        moveDir.y -= gravity;
        //If I jump the gravity will still be in effect
        if (Input.GetKey (KeyCode.Space)){
            //push up for 10 "steps" at the jump speed
            rb.AddForce(Vector3.up * jumpSpd, ForceMode.Impulse);
        }
        //move the controller
        controller.Move(moveDir * Time.deltaTime);
    }
2

Since you are already using Move function you could modify Y axis of the MoveDir to make your character jump!

if (Input.GetKey(KeyCode.Space)) {
moveDir.y = jumpSpd;
}
3

Well, I’m not sure about why but I’m wondering why do you do gravity manually ?

You’re moving your object down -9.81f every update, without even using Time.deltaTime.

        //push down at a constant rate
        moveDir.y -= gravity;

If your GameObject has a RigidBody attached to it, you should be able to enable “Use Gravity”. That will do the work for you and it will do it correctly.

4

So, if “Use Gravity” is enabled, then I don’t have to worry about it in code? awesome.
Also,

I am now going to work towards using only the rigidbody and physics for movement. I’ll post the updated code when I can if anyone wants to continue monitoring the thread.
Thanks Guys!