Isometric Character controller help!

here's the code I'm using it works fine except I get a message in the console saying

Look rotation viewing vector is zero
UnityEngine.Transform:set_forward(Vector3)
CharController:Move() (at Assets/CharController.cs:41)
CharController:Update() (at Assets/CharController.cs:31)

this means my player is facing "forward" left in my current setup every update
this is a problem because I want it to be facing forward only before a button is pressed once a button, w, a ,s ,d is pressed then it keeps the direction of the key pressed if that makes sense? looks janky as hell going back to "forward position" every update

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class CharController : MonoBehaviour {
6.  
7.     [SerializeField]
8.     float moveSpeed = 4f;
9.  
10.     Vector3 forward, right;
11.  
12.     bool jump = false;
13.     float jumpHeight = 4f, jumpSpeed = 4f;
14.     Rigidbody rb;
15.     // Start is called before the first frame update
16.     void Start()
17.     {
18.         forward = Camera.main.transform.forward;
19.         forward.y = 0;
20.         forward = Vector3.Normalize(forward);
21.         right = Quaternion.Euler(new Vector3(0, 90, 0)) * forward;
22.         rb = GetComponent<Rigidbody>();
23.     }
24.  
25.     // Update is called once per frame
26.     void Update()
27.     {
28.         if (Input.GetButtonDown("Jump") && !jump)
29.             StartCoroutine(Jump());
30.         else
31.             Move();
32.     }
33.     void Move()
34.     {
35.         Vector3 direction = new Vector3(Input.GetAxis("HorizontalKey"), 0, Input.GetAxis("VerticalKey"));
36.         Vector3 rightMovement = right * moveSpeed * Time.deltaTime * Input.GetAxis("HorizontalKey");
37.         Vector3 upMovement = forward * moveSpeed * Time.deltaTime * Input.GetAxis("VerticalKey");
38.  
39.         Vector3 heading = Vector3.Normalize(rightMovement + upMovement);
40.  
41.         transform.forward = heading;
42.         transform.position += heading * moveSpeed * Time.deltaTime;
43.     }
44.     IEnumerator Jump()
45.     {
46.         float originalHeight = transform.position.y;
47.         float maxHeight = originalHeight + jumpHeight;
48.         rb.useGravity = false;
49.  
50.         jump = true;
51.         yield return null;
52.  
53.         //rb.AddForce(Vector3.up * jumpHeight, ForceMode.Impulse);
54.         while(transform.position.y < maxHeight)
55.         {
56.             transform.position += transform.up * Time.deltaTime * jumpSpeed;
57.             yield return null;
58.         }
59.  
60.         rb.useGravity = true;
61.  
62.         while (transform.position.y > originalHeight)
63.         {
64.             yield return null;
65.         }
66.         rb.useGravity = true;
67.         jump = false;
68.         yield return null;
69.     }
70. }
71.  

 

Couple of ways to deal with it:

- Don't set direction unless there is at least a certain amount of movement (ie., greater than 0.1 total perhaps)

- Another way: calculate the facing angle and slowly tween towards it, which will prevent sharp snapping of direction.

Mathf.Atan2() and Mathf.Rad2Deg is going to get you a direction from cartesian inputs (x,y)

Mathf.DeltaAngle() and/or Mathf.MoveTowardsAngle() can help you move the facing direction smoothly.

 

Yo thank you so much for your help, but I'm having trouble finding where this fits into the code