UIBindingManager (ACHENGINE_R3)

UIBindingManager is a type-based pub/sub message bus backed by R3's Subject<T>. UI components can exchange events without direct dependencies on each other.

Requires the R3 package (com.cysharp.r3). The class is excluded from compilation when R3 is not installed.

Publish

using AchEngine.UI;

// Define a message type
public struct GoldChangedMessage
{
    public int Amount;
}

// Publish
UIBindingManager.Publish(new GoldChangedMessage { Amount = 500 });

Subscribe

using AchEngine.UI;

// Store the IDisposable and dispose it in OnDisable/OnDestroy
private IDisposable _subscription;

private void OnEnable()
{
    _subscription = UIBindingManager.Subscribe<GoldChangedMessage>(msg =>
    {
        goldLabel.text = msg.Amount.ToString();
    });
}

private void OnDisable()
{
    _subscription?.Dispose();
}

Utility Methods

// Check whether a Subject for the type has been created
bool exists = UIBindingManager.Contains<GoldChangedMessage>();

// Clear all subjects (e.g. on scene unload)
UIBindingManager.ClearAll();

API Summary

Method	Description
Publish<T>(T)	Publish a message
Subscribe<T>(Action<T>)	Subscribe to messages, returns IDisposable
Contains<T>()	Whether a Subject for the type exists
ClearAll()	Remove all subjects

Without R3, UIBindingManager is excluded from compilation. Check install status under Window › AchEngine › AchEngine Info.