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Plain C# Entry point

VContainer allows plain C# to be the starting point for application processing. Using it instead of MonoBehaviour, which has a lot of features, can help you build a simple control flow.

class FooController : IStartable
{
    void IStartable.Start()
    {
        // Do something ...
    }
}
builder.RegisterEntryPoint<FooController>();

See register

VContainer does this with its own PlayerLoopSystem.

If you register a class that implements the marker interface, it will be scheduled in Unity's PlayerLoop cycle.

Since it uses PlayerLoopSystem, it works even if you register at any time (e.g: IStartable etc)

Available interfaces​

VContainer entry pointTiming
IInitializable.Initialize()Immediately after building the container
IPostInitializable.PostInitialize()Late IInitializable.Initialize()
IStartable.Start()Nearly MonoBehaviour.Start()
IAsyncStartable.StartAsync()Nearly MonoBehaviour.Start()
IPostStartable.PostStart()After MonoBehaviour.Start()
IFixedTickable.FixedTick()Nearly MonoBehaviour.FixedUpdate()
IPostFixedTickable.PostFixedTick()After MonoBehaviour.FixedUpdate()
ITickable.Tick()Nearly MonoBehaviour.Update()
IPostTickable.PostTick()After MonoBehaviour.Update()
ILateTickable.LateTick()Nearly MonoBehaviour.LateUpdate()
IPostLateTickable.LateTick()After MonoBehaviour.LateUpdate()

And

  • IDisposable : With container disposes. (For Lifetime.Singleton / Lifetime.Scoped)

note

Unity - Manual: Order of Execution for Event Functions

async​

IAsyncStartable is available as a variant of IStartable. It has the same timing as IStartable, but async Awaitable StartAsync() is available.

If you are a UniTask user, you can also choose the UniTask version of StartAsync. UniTask integration

Handle of the exception that was not caught​

On the application side, exceptions thrown in processes such as Start() and Tick() cannot be caught outside.

By default, VContainer logs unhandled exceptions as UnityEngine.Debug.LogException. As another option, you can register a callback for each LifetimeScope.

builder.RegisterEntryPointExceptionHandler(ex =>
{
    // ...
});
caution

Default error logging will be skipped if you are using the RegisterEntryPointExceptionHandler.