Player moving to the corner of camera and unity giving errors

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class player : MonoBehaviour

    [SerializeField] float speed;
    float Xmax;
    float Xmin;
    float Ymax;
    float Ymin;

    // Start is called before the first frame update
    void Start()

    private void movementboundries()
        Camera gamecamera = Camera.main;
        Xmin = gamecamera.ViewportToWorldPoint(new Vector3(0, 0, 0)).x;

        Xmax = gamecamera.ViewportToWorldPoint(new Vector3(1, 0, 0)).x ;
        Ymin = gamecamera.ViewportToWorldPoint(new Vector3(0, 0, 0)).y;
        Ymax = gamecamera.ViewportToScreenPoint(new Vector3(0, 1, 0)).y;


    // Update is called once per frame
    void Update()
        var deltax = Input.GetAxis("Horizontal") * Time.deltaTime * speed ;
        var deltaY = Input.GetAxis("Vertical") * Time.deltaTime * speed;
        var newYpos =  Mathf.Clamp(transform.position.y + deltaY , Ymax, Ymin);

        var newXpos = Mathf.Clamp(transform.position.x + deltax , Xmax,Xmin);
        transform.position = new Vector2(newXpos, newYpos);

Hi Usman,

NullReferenceException means that a reference (“link”) to an instance is missing. Double click on the error message to see to which line in your code it is referring. If you exposed a field in the Inspector, make sure that it’s not empty.

Before you try to solve this, I’d recommend to check your game objects first. The yellow message indicates a missing component, so look for “Missing” in your Inspector. Maybe the NullReferenceExceptions are caused by that.

See also:

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