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C#-Quelltext

 private Rigidbody rigid;
    private float movementSpeed = 20;
    private float jumpPower = 50;
    private float gravity = 5;
    private float distanceToGround;
    private float groundCheckSpacing = 0.1f;
    private float smoothRotation = 50;
    private float verticalVelocity;
    Vector3 movement;

    private void Start()
    {
        rigid = GetComponent<Rigidbody>();
        distanceToGround = GetComponent<Collider>().bounds.extents.y + groundCheckSpacing;
    }

    private void FixedUpdate()
    {
        if (GroundCheck())
        {
            verticalVelocity = -gravity;
            if (Input.GetButtonDown("Jump"))
            {
                verticalVelocity = jumpPower;
            }
        }
        else
        {
            verticalVelocity -= gravity;
        }

        movement.x = Input.GetAxis("Horizontal") * movementSpeed;
        movement.y = verticalVelocity;
        movement.z = Input.GetAxis("Vertical") * movementSpeed;

        Transform tempTransform = Camera.main.transform;
        tempTransform.position = new Vector3(tempTransform.position.x, transform.position.y, tempTransform.position.z);
        tempTransform.LookAt(transform);
        movement = tempTransform.TransformDirection(movement).normalized * movementSpeed;

        rigid.velocity = movement;

        if (movement.magnitude != 0)
        {
            Quaternion targetRotation = Quaternion.LookRotation(new Vector3(movement.x, 0, movement.z));
            transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, smoothRotation);
        }
    }

    private bool GroundCheck()
    {
        return Physics.Raycast(transform.position, -Vector3.up, distanceToGround);
    }