scripts

Pause.CS

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

public class Pause : MonoBehaviour
{

    public GameObject pausePanel;
    public PlayerController controller;

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

    }



    // Update is called once per frame
    void Update()
    {
    if (Input.GetKeyDown(KeyCode.Escape))
        {
            pausePanel.SetActive(!pausePanel.activeSelf);
            controller.isActive = !pausePanel.activeSelf;

            if (pausePanel.activeSelf)
                Time.timeScale = 0;
            else
                Time.timeScale = 1;

          //  Time.timeScale = pausePanel.activeSelf ? 0 : 1;
        }
    }

    public void Unpause()
    {
        pausePanel.SetActive(!pausePanel.activeSelf);
        controller.isActive = !pausePanel.activeSelf;
        Time.timeScale = 1;
    }

    public void QuitGame()
    {
        Application.Quit();
    }
}


StartMenu.cs

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

public class StartMenu : MonoBehaviour
{

    public PlayerController controller;
    // Start is called before the first frame update
    void Start()
    {

    }

    // Update is called once per frame
    void Update()
    {
    }

    public void StartGame()
    {
        Debug.Log("test");
        SceneManager.LoadScene("Gam120Project1");
    }

    public void QuitGame()
    {
        Application.Quit();
    }


}

PlayerController.cs

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

public class PlayerController : MonoBehaviour
{

    public float horizontal = 0;
    public float vertical = 0;
    private Rigidbody2D rb;
    [SerializeField]private SpriteRenderer sr;
    public float moveSpeed = 5;
    private Animator anim;
    private float jumpforce = 8;
    private bool isjumping = false;
    private bool isgrounded = true;

    public bool isActive = true;
    // Start is called before the first frame update
    void Start()
    {
        rb = GetComponent<Rigidbody2D>();
        anim = GetComponent<Animator>();
    }

    // Update is called once per frame
    void Update()
    {
        if (isActive)
        {
            horizontal = Input.GetAxisRaw("Horizontal");
            isjumping = Input.GetKeyDown(KeyCode.Space);

            anim.SetBool("IsMoving", horizontal != 0 || vertical != 0);

            if (horizontal < 0 && sr.flipX == false)
                sr.flipX = true;
            else if (horizontal > 0 && sr.flipX == true)
                sr.flipX = false;
        }

    }

    void FixedUpdate()
    {
        print (isgrounded);

        Vector2 NewMovement = new Vector2(horizontal, 0).normalized * moveSpeed;


        if (isjumping && isgrounded) NewMovement += new Vector2(0, jumpforce);
        else NewMovement += new Vector2(0, rb.velocity.y);

        rb.velocity = NewMovement;
    }

    private void OnCollisionEnter2D(Collision2D collision)
    {
        isgrounded = true;
    }
    private void OnCollisionExit2D(Collision2D collision)
    {
        isgrounded = false;
    }
    private void OnCollisionStay2D(Collision2D collision)
    {
        isgrounded = true;
    }
}