unity1

public class PlayerScript : MonoBehaviour
{
    public Rigidbody rb;
    public Camera cam;
    public float movementSpeed;
    public float jumpPower;

    public int coinCount = 0;
    public int initialHealth = 3;

    public int health = 0;

    private Vector3 spawnPoint;

    // Start is called before the first frame update
    private void Start()
    {
        spawnPoint = transform.position;
        health = initialHealth;
    }

    public bool OnGround()
    {
        return Physics.Raycast(transform.position - new Vector3(0, .49f, 0), Vector3.down, .02f);
    }

    public void Die()
    {
        health = initialHealth;
        transform.position = spawnPoint;
    }

    // Update is called once per frame
    private void Update()
    {
        float rotationDegrees = Mathf.Atan2(Input.GetAxis("Vertical"), -Input.GetAxis("Horizontal")) * 180f / Mathf.PI - 90;
        Vector3 facingDirection = Camera.main.transform.forward;

        Vector2 newHorizontalVelocity = new Vector2(0, 0);
        float newVerticalVelocity = rb.velocity.y;
        if (Mathf.Abs(Input.GetAxis("Vertical")) > 0.1f || Mathf.Abs(Input.GetAxis("Horizontal")) > 0.1f)
        {
            Vector3 movementVelocity = Quaternion.AngleAxis(rotationDegrees, Vector3.up) * facingDirection * movementSpeed;
            newHorizontalVelocity = new Vector2(movementVelocity.x, movementVelocity.z);
        }

        if (Input.GetKeyDown("space") && OnGround())
        {
            newVerticalVelocity += jumpPower;
        }

        rb.velocity = new Vector3(newHorizontalVelocity.x, newVerticalVelocity, newHorizontalVelocity.y);

        if (transform.position.y < -5 || health <= 0)
        {
            Die();
        }
    }
}