MenuScript.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;
using UnityEngine.Audio;
using TMPro;

public class MenuScript : MonoBehaviour
{
    public GameObject optionsMenu;

    public GameObject leaderBoard;

    public AudioMixer master;

    public TextMeshProUGUI volumeText;

    private string masterParam = "Master";

    public TMP_Dropdown dropdown;

    public Slider volumeSlider;

    public Scrollbar qualitySlider;

    private void Start()
    {
        SavedPrefs();
    }

    //Check to see if the player has set up preferences for the options the choose, if not, then utilize default settings
    private void SavedPrefs()
    {
      //volume controll preferences
        if (!PlayerPrefs.HasKey("Volume"))
        {
            PlayerPrefs.SetFloat("Volume", 70);
            ChangeVolume(70);
            volumeSlider.value = 70;
            print("Vol set");

        }
        else
        {
            float vol = PlayerPrefs.GetFloat("Volume");

            volumeSlider.value = vol;

            ChangeVolume(vol);
        }

        //graphics quality preferences
        if (!PlayerPrefs.HasKey("Quality"))
        {
            PlayerPrefs.SetInt("Quality", 1);

            QualitySettings.SetQualityLevel(2, true);
            qualitySlider.value = .3f;
        }
        else
        {
            int qual = PlayerPrefs.GetInt("Quality");

            switch (qual)
            {
                case 0:
                    ChangeQuality(0);
                    qualitySlider.value = 0;
                    break;

                case 1:
                    ChangeQuality(.3f);
                    qualitySlider.value = 0.3f;
                    break;

                case 2:
                    ChangeQuality(.6666667f);
                    qualitySlider.value = .6666667f;
                    break;

                case 3:
                    ChangeQuality(1);
                    qualitySlider.value = 1;
                    break;
            }
        }

        //player Resolution preferences
        if (!PlayerPrefs.HasKey("Resolution"))
        {
            PlayerPrefs.SetInt("Resolution", 1);
            dropdown.value = 1;
        }
        else
        {
            int res = PlayerPrefs.GetInt("Resolution");

            switch (res)
            {
                case 0:
                    ChangeRes(res);
                    dropdown.value = 0;
                    break;

                case 1:
                    ChangeRes(res);
                    dropdown.value = 1;
                    break;

                case 2:
                    ChangeRes(res);
                    dropdown.value = 2;
                    break;
            }
        }
    }

    //These five methods are used for load scenes, open menus and quit the game
    public void PlaySolo()
    {
        SceneManager.LoadScene("ArenaThrow");
    }

    public void PlayMulti()
    {
        print("Multiplayer not added yet");
    }

    public void LeaderBoard()
    {
        leaderBoard.SetActive(true);
    }

    public void Options()
    {
        optionsMenu.SetActive(true);
    }

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

//Check to see if the player wants to open a menu or if they want to quit the game by pressing escape
    private void Update()
    {
        if (Input.GetKeyDown(KeyCode.Escape))
        {
            if (optionsMenu.activeInHierarchy == true)
            {
                optionsMenu.SetActive(false);
            }
            else if(leaderBoard.activeInHierarchy == true)
            {
                leaderBoard.SetActive(false);
            }
            else
            {
                Exit();
            }
        }
    }

//method used to change the graphics quality based on player preferences
    public void ChangeQuality(float QualityNum)
    {

        switch (QualityNum)
        {
            case 0:
                QualitySettings.SetQualityLevel(0, true);
                PlayerPrefs.SetInt("Quality", 0);
                break;

            case .6666667f:
                QualitySettings.SetQualityLevel(4, true);
                PlayerPrefs.SetInt("Quality", 2);
                break;

            case 1:
                QualitySettings.SetQualityLevel(5, true);
                PlayerPrefs.SetInt("Quality", 3);
                break;

            default:
                QualitySettings.SetQualityLevel(2, true);
                PlayerPrefs.SetInt("Quality", 1);
                break;
        }
    }

//method used to display to the player what the volume value is in the options menu, turning the slider data into actual volume change plus save player preferences
    public void ChangeVolume(float Volume)
    {

        float volValue = -60 + (Volume - 0) * (10 - -60) / (100 - 0);

        float prefVal = Mathf.CeilToInt(Volume);

        volumeText.text = prefVal.ToString();

        master.SetFloat(masterParam, volValue);

        print(volValue);

        PlayerPrefs.SetFloat("Volume", prefVal);
    }

    //method used to change the Resolution of the game using player preferences from a drop down menu
    public void ChangeRes(int res)
    {
        switch (res)
        {
            case 0:
                Screen.SetResolution(1280, 720, true);
                PlayerPrefs.SetInt("Resolution", res);
                break;

            case 1:
                Screen.SetResolution(1920, 1080, true);
                PlayerPrefs.SetInt("Resolution", res);
                break;

            case 2:
                Screen.SetResolution(2560, 1440, true);
                PlayerPrefs.SetInt("Resolution", res);
                break;
        }
    }

}