Signals from/to C# script

[spayke]

Hi, can you please give example on:
how to send or catch signals(“Signal Definiion”) with C# script
and how to send/accept FlowCanvases “Custom Events” in C# too

[Gavalakis]

Hello,
The two of them work differently. Here are example code with explanation comments for you.

SIGNAL:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

using NodeCanvas.Framework; using UnityEngine;   public class ExampleSignal : MonoBehaviour {     public SignalDefinition signal;       //To catch, subscribe to the signal     void OnEnable() { signal.onInvoke += OnSinglaInvoke; }     void OnDisable() { signal.onInvoke -= OnSinglaInvoke; }       //Called when signal is invoked     void OnSinglaInvoke(Transform sender, Transform receiver, bool isGlobal, params object[] args) {         //handling receiver and isGlobal is optional but this is what the nodes are doing         if ( isGlobal || receiver == this.transform ) {             Debug.Log("Sender = " + sender);             Debug.Log("arg0 = " + args[0]);             Debug.Log("arg1 = " + args[1]);         }     }       //Invoke a signal in code     void Update() {         if ( Input.GetKeyDown(KeyCode.Space) ) {               //invoke the signal only to be received by this transform as target receiver.             signal.Invoke(this.transform, this.transform, false, "hello", 13f);               //invoke the signal globaly without a specific target receiver.             signal.Invoke(this.transform, null, true, "hello", 13f);         }     } }

CUSTOM EVENT:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

using FlowCanvas; using ParadoxNotion; using ParadoxNotion.Services; using UnityEngine;   public class ExampleCustomEvent : MonoBehaviour {     public FlowScriptController graphOwner;       //All custom events are handled through the EventRouter component.     //To catch events in code we need to get or add an EventRouter if it does not exist already     //on the gameobject of the graphowner that we want to catch events from.     //Then subscribe to its onCustomEvent.     void OnEnable() {         var router = graphOwner.GetComponent<EventRouter>();         if ( router == null ) { router = graphOwner.gameObject.AddComponent<EventRouter>(); }         router.onCustomEvent += OnCustomEventInvoke;     }       //To unsubscribe we only care if the EventRouter component was there in the first place.     //If so, unsubscribe from its onCustomEvent.     void OnDisable() {         var router = graphOwner.GetComponent<EventRouter>();         if ( router != null ) {             router.onCustomEvent -= OnCustomEventInvoke;         }     }       //Called when the event is invoked/sent     void OnCustomEventInvoke(string eventName, IEventData eventData) {         Debug.Log("Sender = " + eventData.sender);         Debug.Log("Event Value = " + eventData.valueBoxed);     }       //Send an event in code     void Update() {         if ( Input.GetKeyDown(KeyCode.Space) ) {               //send an event to the graph owner with null value and this sender             graphOwner.SendEvent("MyEventName", null, this);               //send an event to the graph owner with a float value and this sender             graphOwner.SendEvent<float>("MyEventName", 13f, this);         }     } }

If you need any clarification please let me know. 🙂

Join us on Discord: https://discord.gg/97q2Rjh

[spayke]

This is very useful, thank you very much!

[Gavalakis]

You are very welcome 🙂

Join us on Discord: https://discord.gg/97q2Rjh

[Author]

Posts