How to change rigidbody force direction?

Question

I'm playing with Roll-a-ball tutorial. How can i modify sample code to rotate ball by y axis? I want to rotate ball forwards and change the direction using 'a' and 'd'.

Sample:

 float moveHorizontal = Input.GetAxis ("Horizontal");
 float moveVertical = Input.GetAxis ("Vertical");
 Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);
 rb.AddForce (movement * speed);

I tried MoveRotation, transform.Rotate, but cant get it right. I guess y axis are rotated by forward movement and y rotation are made to local y axis witch is different from world y axis?!

Answer 1

I am not sure. U want move Forward/Backward by W/S and turn left/right by A/D ? I found solution (I think) in Tank unity tutorial:

 using UnityEngine;
 using System.Collections;
 
 public class Mover : MonoBehaviour {
 
     public int speed;
     public int turnSpeed;
     private Rigidbody rb;
     
     void Start ()
     {
         rb = GetComponent<Rigidbody>();
     }
     void FixedUpdate()
     {
 
         float moveHorizontal = Input.GetAxis("Horizontal");
         float moveVertical = Input.GetAxis("Vertical");
 
         //For move Forward/Backward:
         //moveVertical change from -1 value when pressed S and 1 when pressed W
         //speed is variable   
 
         Vector3 movement = transform.forward * moveVertical * speed * Time.deltaTime;
         rb.MovePosition(rb.position + movement);
 
         //For turning left and right:
         //MoveHorizontal almost same, but u use A and D key (-1 and 1 value).
         //turnSpeed is variable
 
         float turn = moveHorizontal * turnSpeed * Time.deltaTime;
         Quaternion turnRotation = Quaternion.Euler(0f, turn, 0f);
         rb.MoveRotation(rb.rotation * turnRotation);
     }
 }

Is it working?

How to change rigidbody force direction?

1 Reply

Your answer

Follow this Question

Related Questions