Question How to use signals outside of Timeline

I want to use Signals outside of timelines to broadcast when events have been triggered. Yes I could make my own system, but why have multiple systems when I'm already using signals for timeline and it just so happens I need to talk to the same objects anyway and have a signalreviever on them already.

My specific use case is when a player walks over a certain area I want to trigger a signal that will present the player with a quest.

However, neither the SignalAsset or SignalEmitter seem to have a method I can call to trigger or emit the signal?

 

The signal is sent over

INotificationReceiver.OnNotify

, so you can call it in your collider area trigger script.

 

I'm not sure what you mean.

INotificationReceiver.OnNotify

is an callback triggered at the receiver end, but I want to know to emit a signal in the first place.

In my collider script I have a reference to a SignalAsset, what method on that object can I call to emit the signal? or method on something else and pass the signal in.

So per your suggestion, how do I call

INotificationReceiver.OnNotify

in my collider?

 

Triggering an event is simply just a "call the callback" process, so just call it in your OnTriggerEnter or other. Here's an example:

Code (CSharp):

1.  
2. public class SignalArea : MonoBehaviour
3. {
4.     [SerializeField] private SignalAsset signalToSend;
5.     private SignalEmitter runtimeEmitter;
6.  
7.     private void Awake()
8.     {
9.         runtimeEmitter = ScriptableObject.CreateInstance<SignalEmitter>();
10.         runtimeEmitter.asset = signalToSend;
11.     }
12.  
13.     private void OnDestroy()
14.     {
15.         Destroy(runtimeEmitter);
16.     }
17.  
18.     private void OnTriggerEnter(Collider other)
19.     {
20.         // check if there is a receiver on the other object
21.         // your player needs a SignalReceiver component to get event from this component
22.         if (!other.TryGetComponent<SignalReceiver>(out var receiver)) return;
23.  
24.         // sends the signal
25.         receiver.OnNotify(default, runtimeEmitter, default);
26.     }
27. }