Raq_GameManager.cs

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

public class Raq_GameManager : MonoBehaviour
{
    public Transform rubberball;
    public Transform raq_player;
    public Transform raq_opponent;

    public Animator opponent_anim;
    public Animator countDown;
    public Animator swipeLabel;

    public Transform servePos;
    public Transform player_servePos;
    public Transform player_receivePos;

    [SerializeField]
    GameObject nextLabel;
    [SerializeField]
    GameObject nextText;
    [SerializeField]
    GameObject outLabel;
    [SerializeField]
    GameObject Player;
    [SerializeField]
    GameObject Opponent;

    [HideInInspector]
    public bool playerServe = true;
    [HideInInspector]
    public bool befServe;

    public int playerPoints;
    public int opponentPoints;

    RubberBall ballScript;

    void Start()
    {
        playerPoints = 0;
        opponentPoints = 0;

        nextLabel.SetActive(false);
        outLabel.SetActive(false);

        playerServe = true;
        befServe = true;
        Set_Position();
        Serve();

        ballScript = rubberball.GetComponent<RubberBall>();
    }

    public void Set_Position()
    {
        if (befServe == false)
            return;

        rubberball.position = servePos.position;
        rubberball.GetComponent<Rigidbody>().velocity = Vector3.zero;

        Player.SetActive(true);
        Opponent.SetActive(true);

        if (playerServe)
        {
            raq_player.position = player_servePos.position;
            raq_opponent.position = player_receivePos.position;
        }
        else
        {
            raq_opponent.position = player_servePos.position;
            raq_player.position = player_receivePos.position;
        }
    }

    public void Serve()
    {
        if (playerServe)
        {
            swipeLabel.SetTrigger("Play");
        }
        else
        {
            StartCoroutine(Opponent_Serve());
        }
    }

    IEnumerator Opponent_Serve()
    {
        Raq_opponent opponentScript = raq_opponent.GetComponent<Raq_opponent>();

        countDown.SetTrigger("Countdown");

        yield return new WaitForSeconds(3f);

        StartCoroutine(opponentScript.Raq_JustHit());

        opponent_anim.SetTrigger("Hit right");

        yield return new WaitForSeconds(0.28f);

        opponentScript.Raq_HitBall(true, servePos);
        befServe = false;
        ballScript.after_hit = true;
        Invoke(nameof(Cancel_Afthit), ballScript.timelag);
    }

    void Cancel_Afthit()
    {
        ballScript.after_hit = false;
    }

    public void CourtTriggered(bool front_col)
    {
        befServe = true;
        outLabel.SetActive(true);

        if (front_col)
        {
            if (ballScript.GetLastHit())
            {
                WinPoint();
            }
            else
            {
                LosePoint();
            }
        }
        else
        {
            if (ballScript.GetLastHit())
            {
                LosePoint();
            }
            else
            {
                WinPoint();
            }
        }

        if (playerPoints >= 5)
        {
            nextLabel.SetActive(true);
            nextText.GetComponent<UnityEngine.UI.Text>().text = "YOU WIN!!";
            StartCoroutine(NextMatch());
        }
        else if (opponentPoints >= 5)
        {
            nextLabel.SetActive(true);
            nextText.GetComponent<UnityEngine.UI.Text>().text = "YOU LOSE";
            StartCoroutine(NextMatch());
        }
        else
        {
            StartCoroutine(NextGame());
        }
    }
    
    IEnumerator NextGame()
    {
        yield return new WaitForSeconds(4.0f);
        Player.SetActive(false);
        Opponent.SetActive(false);
        nextLabel.SetActive(true);

        nextText.GetComponent<UnityEngine.UI.Text>().text = "Player:" + playerPoints + "  Opponent:" + opponentPoints;

        yield return new WaitForSeconds(6.0f);
        outLabel.SetActive(false);
        nextLabel.SetActive(false);

        playerServe = !playerServe;
        Set_Position();
        Serve();
    }

    //add a point to the opponent score
    void LosePoint()
    {
        opponentPoints++;
    }

    //add a point to the player score
    void WinPoint()
    {
        playerPoints++;
    }

    IEnumerator NextMatch()
    {
        yield return new WaitForSeconds(4.0f);
        SceneManager.LoadScene("ContinueScene");
    }
}