Subscribing to Events from other plugins and scripts

[kevynm]

I’m using the Touchscript plugin and I want to subscribe to its TapGesture class Tapped Event. How do I do that? Or How do I subscribe to Events in general and just listen to them through my custom event node. Also, is it easier to do this in NodeCanvas? If so, How?

Thanks!

[Gavalakis]

Hello,

The included “Code Event” node is only able to subscribe to events of type System.Action or System.Action(T). this is the case in NodeCanvas as well.
If you have created a custom event node though, here is an example of how:

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using UnityEngine; using System.Collections;   namespace FlowCanvas.Nodes{   public class CustomEventNodeExample : EventNode {   private FlowOutput raised;   protected override void RegisterPorts(){ raised = AddFlowOutput("Out"); }   public override void OnGraphStarted(){ TapGesture.Tapped += EventRaised; }   public override void OnGraphStoped(){ TapGesture.Tapped -= EventRaised; }   void EventRaised(){ raised.Call(new Flow()); } } }

Is this what you mean or something different?
Thanks

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[kevynm]

Because Tapped Gesture is a component attached to the same gameobject. So, I can reference it inside my custom event node and subcribe to it?

[Gavalakis]

Hello,

Sorry. I though the TapGesture is a static class. You can do the same for components by some small alterations to the code above. Here it is:

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using UnityEngine; using System.Collections; namespace FlowCanvas.Nodes{ public class CustomEventNodeExample : EventNode<TapGesture> { private FlowOutput raised; protected override string[] GetTargetEvents(){return null;} //you don't need this in this case.   protected override void RegisterPorts(){ raised = AddFlowOutput("Out"); } public override void OnGraphStarted(){ base.OnGraphStarted(); //make sure to call base target.value.Tapped += EventRaised; } public override void OnGraphStoped(){ base.OnGraphStoped(); //make sure to call base target.value.Tapped -= EventRaised; } void EventRaised(){ raised.Call(new Flow()); } } }

Notice that here, we instead derive from the generic class of EventNode, with an type argument of the type we need.
‘target.value’ gives you the actual component which is always the same type as the generic argument.
As with all the other event nodes, you can either leave the field in the node inspector empty to get the component automaticaly from the FlowScriptController gameobject, or you can assign a reference manualy.

Let me know if this works for you.

Thanks

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[kevynm]

Yes it works! Thank you very much!

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