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Calling hdaModule functions in Unity

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megasets
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Hi there

So I have an HDA with a python function call attached to a button paramater as a callback. In Unity this button works if I hit teh button in the GUI
Is there a way to call the same function via the API in Unity or a nice way of pushing the button programmaticlly?

I could not find any mention of buttons in HEU_ParameterUtility

many thanks
Sam
Sam Swift-Glasman
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Five AI
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seelan
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You're correct, the HEU_ParameterUtility doesn't have an example for buttons. But button parms are integers that simply need to have their value toggled between 0 and 1. Here is a code example of how to do so:

[MenuItem("HEngineiActions/DoExportButton", false, 0)]
public static void DoExportButton()
{
	GameObject[] selectedObjects = Selection.gameObjects;
	if (selectedObjects == null || selectedObjects.Length == 0)
	{
		return;
	}

	GameObject go = selectedObjects[0];

	HEU_HoudiniAssetRoot root = go.GetComponent<HEU_HoudiniAssetRoot>();
	if (root == null || root._houdiniAsset == null)
	{
		return;
	}

	HEU_HoudiniAsset asset = root._houdiniAsset;

	// Button name is "reload". Its node must be marked as editable.
	HEU_ParameterData paramData = asset.Parameters.GetParameter("reload");
	if (paramData != null)
	{
		// Triggering button and cooking
		// Buttons are integer values that need to switch between 0 and 1 in
		// order to trigger them.
		paramData._intValues[0] = paramData._intValues[0] == 0 ? 1 : 0;
		asset.RequestCook(false, true, true, true);
	}
}
Edited by seelan - 2019年9月23日 08:42:13
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megasets
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Excellent thanks Seelan!

We'll give that a go
Sam Swift-Glasman
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Five AI
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Hugecalf
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Hello!

Seelan, thanks for your help. I've tried what you suggested, toggle the int value of the button but can't seem to get it to work.
I've made the node editable, as I saw something on another post that suggested this.

Are there any other ways of triggering the button / just running the hdaModule function within Unity?

Many thanks,

Will
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