Kiến trúc: Mẫu Service Locator

using UnityEngine;
using System.Collections.Generic;

// 1. Service Locator: Một class static để đăng ký và lấy các services
public static class ServiceLocator
{
    private static readonly Dictionary<System.Type, object> services = new Dictionary<System.Type, object>();

    public static void Register<T>(T service) where T : class
    {
        var type = typeof(T);
        if (services.ContainsKey(type))
        {
            Debug.LogWarning($"Service of type {type} is already registered.");
            return;
        }
        services[type] = service;
        Debug.Log($"Service registered: {type.Name}");
    }

    public static T Get<T>() where T : class
    {
        var type = typeof(T);
        if (!services.TryGetValue(type, out var service))
        {
            Debug.LogError($"Service of type {type} not found.");
            return null;
        }
        return (T)service;
    }
    
    public static void Unregister<T>() where T : class {
        services.Remove(typeof(T));
    }
}

// 2. Một interface cho service (ví dụ: IAudioManager)
public interface IAudioManager {
    void PlaySound(string soundName);
}

// 3. Class triển khai service
public class AudioManager : MonoBehaviour, IAudioManager
{
    void Awake()
    {
        // Đăng ký chính nó vào Service Locator
        ServiceLocator.Register<IAudioManager>(this);
    }

    void OnDestroy() {
        ServiceLocator.Unregister<IAudioManager>();
    }

    public void PlaySound(string soundName) {
        Debug.Log("Playing sound: " + soundName);
    }
}

// 4. Một class khác sử dụng service
public class Player : MonoBehaviour
{
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Space))
        {
            // Lấy AudioManager từ Service Locator và sử dụng
            IAudioManager audioManager = ServiceLocator.Get<IAudioManager>();
            audioManager?.PlaySound("Player_Jump");
        }
    }
}