You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

103 lines
4.9 KiB
Markdown

This file contains ambiguous Unicode characters!

This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.

# Create a Custom Scripting Event Sender node
> [!NOTE]
> Before you create a Custom Scripting Event Sender node, you must create a Custom Scripting Event node. [!include[tasks-note-end](./snippets/custom-events/vs-tasks-note-end.md)].
After you create a Custom Scripting Event node, you can create a Custom Scripting Event Sender node to trigger the Event from any other Script Graph in the same scene, or the same Script Graph.
You can also choose to create a separate script to trigger the Event from code. For more information, see [Trigger a Custom Scripting Event from a C# script](vs-create-own-custom-event-node-trigger-code.md).
## Create a node and add it to the fuzzy finder
To create a Custom Scripting Event Sender node and add it to the fuzzy finder:
1. [!include[open-project-window](./snippets/vs-open-project-window.md)]
1. [!include[right-click-project](./snippets/custom-events/vs-right-click-project.md)]
1. [!include[create-c-script-project](./snippets/vs-create-c-script-project.md)]
1. Enter a name, such as `SendMyEventNode`, for the new script file.
1. Press Enter.
1. [!include[open-new-external-code](./snippets/vs-open-new-external-code.md)]
1. In your external editor, copy and paste the following code into the C# script:
```csharp
using Unity.VisualScripting;
using UnityEngine;
//Custom node to send the Event
[UnitTitle("Send My Custom Event")]
[UnitCategory("Events\\MyEvents")]//Setting the path to find the node in the fuzzy finder as Events > My Events.
public class SendMyEvent : Unit
{
[DoNotSerialize]// Mandatory attribute, to make sure we dont serialize data that should never be serialized.
[PortLabelHidden]// Hide the port label, as we normally hide the label for default Input and Output triggers.
public ControlInput inputTrigger { get; private set; }
[DoNotSerialize]
public ValueInput myValue;
[DoNotSerialize]
[PortLabelHidden]// Hide the port label, as we normally hide the label for default Input and Output triggers.
public ControlOutput outputTrigger { get; private set; }
protected override void Definition()
{
inputTrigger = ControlInput(nameof(inputTrigger), Trigger);
myValue = ValueInput<int>(nameof(myValue),1);
outputTrigger = ControlOutput(nameof(outputTrigger));
Succession(inputTrigger, outputTrigger);
}
//Send the Event MyCustomEvent with the integer value from the ValueInput port myValueA.
private ControlOutput Trigger(Flow flow)
{
EventBus.Trigger(EventNames.MyCustomEvent, flow.GetValue<int>(myValue));
return outputTrigger;
}
}
```
1. [!include[save-script](./snippets/vs-save-script.md)]
1. [!include[return-unity](./snippets/vs-return-unity.md)]
1. [!include[regen-node-library](./snippets/vs-regen-node-library.md)]
After you regenerate your Node Library, the Custom Scripting Event Sender node appears in the fuzzy finder. If you didn't change the `[UnitCategory]` or `[UnitTitle]` from the sample code, then the fuzzy finder displays the node under **Events** &gt; **MyEvents**, as the **Send My Custom Event** node. For more information on the fuzzy finder, see [The interface](vs-interface-overview.md#the-fuzzy-finder).
## Trigger your Custom Scripting Event node
You might use your **Send My Custom Event** node to trigger your Event based on keyboard input:
1. [Open a Script Graph](vs-open-graph-edit.md) where you want to add the new node. This can be the same or a different Script Graph from the one that contains your Custom Scripting Event node.
2. [!include[open-fuzzy-finder](./snippets/vs-open-fuzzy-finder.md)].
1. Go to **Events** &gt; **Input**.
1. Select the **On Keyboard Input** node to add it to the graph.
3. Right-click again in the Graph Editor to open the fuzzy finder.
1. Go to **Events** &gt; **My Events**.
1. Select your **Send My Custom Event** node to add it to the graph.
4. Connect the **On Keyboard Input** node's Trigger output port to the **Send My Custom Event** node's Input Trigger input port, as shown in the following image.
![An image of the Graph Editor. An On Keyboard Input node with its Key set to Space and its Action set to Up connects to the Send My Custom Event node.](images/vs-custom-event-send-my-custom-event-node-keyboard.png)
5. Select **Play** from [the Unity Editor's Toolbar](https://docs.unity3d.com/Manual/Toolbar.html) to enter Play mode.
1. Press and release the Spacebar in the [Game view](https://docs.unity3d.com/Manual/GameView.html).
The Custom Scripting Event Sender node triggers the Custom Scripting Event in your graph and sends the Event the value from **My Value A**.
## Next steps
After you create a Custom Scripting Event Sender node, you can [create a script to trigger your Event from code](vs-create-own-custom-event-node-trigger-code.md) or [create a script to listen to your Event](vs-create-own-custom-event-listen-code.md).