Everywhere Action - Update action

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1

Hi :slight_smile:

Is there an Everywhere Update Action? Because I want to do some logic in Update, but I can’t seem to make it work on iOS Quicklook, without this.

br,
Max

2

Hi Max,

Yes, there are ways to perform actions akin to an “Everywhere Update Action” in Needle Engine, especially for iOS QuickLook. The typical approach would involve using the available low-level triggers and actions to create custom actions tailored to your needs.

In the context of QuickLook, you can create custom Everywhere Actions using the TriggerBuilder and ActionBuilder API. Since QuickLook doesn’t support all functionalities, make sure to think creatively about possible implementations. For example, you could cover placement areas with invisible objects to simulate raycasting.

To implement functionality in an update-like manner, consider using a combination of the available low-level actions such as ActionBuilder.transformAction or ActionBuilder.playAudioAction based on specific triggers like TriggerBuilder.tapTrigger.

Here’s a brief outline of how you might structure a custom Everywhere Action for your logic:

  1. Define a new action that utilizes ActionBuilder to perform the desired behavior.
  2. Set up triggers that will call this action, for instance, on tap or scene start.
  3. Export your custom behavior in a way compatible with QuickLook and browser/WebXR.

For more specific guidance, consulting the documentation about creating your custom actions could be beneficial: Needle Engine Docs.

If you encounter further issues or have specific requirements for your logic, feel free to share more details to assist you better!

Best regards.

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3

Can you show me how to use ActionBuilder.transformAction?

4

Hi Max,

To use ActionBuilder.transformAction, you can follow the structure below. This action moves an object to a target’s position, and you can specify the duration of the transformation and whether the movement is relative or absolute.

Here’s a code snippet demonstrating how to implement ActionBuilder.transformAction:

import { ActionBuilder, TriggerBuilder, BehaviorModel } from "@needle-tools/engine";

class MoveObjectOnClick {
  object: Object3D; // The object you want to transform
  target: Object3D; // The target position object
  duration: number; // Duration of the movement
  relativeMotion: boolean; // If true, moves relative to the object's current position

  constructor(object: Object3D, target: Object3D, duration: number, relativeMotion: boolean) {
    this.object = object;
    this.target = target;
    this.duration = duration;
    this.relativeMotion = relativeMotion;
  }

  setupMovementBehavior(ext: BehaviorExtension) {
    const moveAction = new BehaviorModel(
      "Move " + this.target.name,
      TriggerBuilder.tapTrigger(this.object), // Trigger the movement on tap
      ActionBuilder.transformAction(this.object, this.target, this.duration, this.relativeMotion ? "relative" : "absolute")
    );

    ext.addBehavior(moveAction);
  }
}

Explanation:

  • object: This is the object that you want to move.
  • target: This is the target position you want the object to move to.
  • duration: This is the time it takes to reach the target position.
  • relativeMotion: If set to true, the object will move relative to its current position; if false, it will move to an absolute position defined by the target’s position.

You would instantiate MoveObjectOnClick, passing in the necessary objects and parameters, and then call setupMovementBehavior with the extension context.

For additional details on working with various actions and triggers, refer to the Needle Engine documentation.

If you need more specific adjustments or explanations, please let me know!

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