EventManager.cs

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

public class EventManager : MonoBehaviour
{
    private static EventManager instance;

    public delegate void HitEventHandler(Vector3 direction);
    public static event HitEventHandler OnRaqplayerHit;

    public delegate void ServeEventHandler();
    public static event ServeEventHandler OnRaqplayerServe;

    public delegate void OutEventHandler();
    public static event OutEventHandler OnRaqgameOut;

    public delegate void NextEventHandler();
    public static event NextEventHandler OnNext;

    public static EventManager Instance
    {
        get
        {
            if (instance == null)
            {
                instance = FindObjectOfType<EventManager>();
                if (instance == null)
                {
                    GameObject obj = new GameObject("EventManager");
                    instance = obj.AddComponent<EventManager>();
                }
            }
            return instance;
        }
    }
    
    public void TriggerRaqplayerHit(Vector3 direction)
    {
        OnRaqplayerHit?.Invoke(direction);
    }

    public void TriggerRaqplayerServe()
    {
        OnRaqplayerServe?.Invoke();
    }

    public void TriggerOut()
    {
        OnRaqgameOut?.Invoke();
    }

    public void TriggerNext()
    {
        OnNext?.Invoke();
    }
}