Rigidbody.MovePosition not working correctly in unity 2017 and higher

Questions & Answers
1

void Update(){
float rotatey=Input.GetAxis(“Mouse X”);
transform.eulerAngles=new Vector3(0,transform.eulerAngles.y+rotatey2,0);
x=Input.GetAxis(“Vertical”);
z=Input.GetAxis(“Horizontal”);
Vector3 moveVector=new Vector3(-x3,0,z3);
transform.GetComponent().MovePosition(transform.position+moveVectorTime.deltaTime);
}

The script above is working perfectly in unity 5.6.1f (it allows cube to move with wsad and rotate on y axis with mouse at the same time)
However on unity 2017 and 2018 the same script is working differently. The cube moves only when it’s not rotating,so if i touch my mouse to change the rotation of the object it’s stop moving.It’s important for my project to allow objects to rotate and move at the same time,so how can i change the code to make it work on the newer versions of unity?

2

The problem lies in the fact that you’re changing the rotation of the Transform while changing the position of the Rigidbody. I won’t go into too much detail, so I’ve included some code which solves the problem while also avoiding redundant calls in Update.

using UnityEngine;

[RequireComponent(typeof(Rigidbody))]
internal sealed class Movement : MonoBehaviour
{
    private Vector2 input;

    [SerializeField]
    private float movementMultiplier = 1f, rotationMultiplier = 1f;

    private Rigidbody rb;
    private float rotation;

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

    private void FixedUpdate()
    {
        var rotation = Quaternion.Euler(
            0,
            this.rb.rotation.eulerAngles.y + (this.rotation * this.rotationMultiplier),
            0);

        this.rb.MoveRotation(rotation);

        var movement = new Vector3(
            -this.input.y * this.movementMultiplier,
            0,
            this.input.x * this.movementMultiplier);
        
        this.rb.MovePosition(this.rb.position + movement * Time.deltaTime);
    }

    private void Reset()
    {
        this.GetComponent<Rigidbody>().useGravity = false;
    }

    private void Update()
    {
        this.input.x = Input.GetAxis("Horizontal");
        this.input.y = Input.GetAxis("Vertical");
        this.rotation = Input.GetAxis("Mouse X");
    }
}