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com.homemade.pattern.observer

info

Version: 1.0.1
Github: Link
Dependencies:

This is simple package for observer, can use in any project.

1. Import​

Download from my registries​

  • Open Package Manager in Unity.
  • Select Packages tab: My Registries.
  • Download package: com.homemade.pattern.observer

Follow the setup: Click here.

Import from github​

Follow this guide: Click here.

2. How to use​

note

Before use, you need to create a script name EventID.cs

public enum EventID
{
    StartGame,
    EndGame,
}

Then you can use it more specific in any event

using com.homemade.pattern.observer;

3. Example​

Register/Remove listener​

using com.homemade.pattern.singleton;

public class PlayerManager : MonoBehaviour
{
    private void Awake()
    {
        Observer.Instance.RegisterListener(EventID.StartGame, OnStartGame);
    }

    private void OnDestroy()
    {
        Observer.Instance.RemoveListener(EventID.StartGame, OnStartGame);
    }

    private void OnStartGame(object obj)
    {
        Debug.Log("Start game");
    }
}
tip

Instead of using

Observer.Instance.RegisterListener(EventID.StartGame, OnStartGame);
Observer.Instance.RemoveListener(EventID.StartGame, OnStartGame);

You can use

this.RegisterListener(EventID.StartGame, OnStartGame);
this.RemoveListener(EventID.StartGame, OnStartGame);

Posting event​

using com.homemade.pattern.singleton;

public class GameManager : MonoBehaviour
{
    private void Start()
    {
        Observer.Instance.PostEvent(EventID.StartGame);
    }
}
tip

Instead of using

Observer.Instance.PostEvent(EventID.StartGame)

You can use

this.PostEvent(EventID.StartGame)

Passing value​

You pass any type of value in method PostEvent

using com.homemade.pattern.singleton;

public class GameManager : MonoBehaviour
{
    private void Start()
    {
        int level = 1;

        Observer.Instance.PostEvent(EventID.StartGame, level);
    }
}

You need to parse to the correct value type that was passing from the PostEvent

public class PlayerManager : MonoBehaviour
{
    private void OnStartGame(object obj)
    {
        int level = (int) obj;
        Debug.Log("Start level: " + level);
    }
}

You can checkout this article, this package is based on it.