Installing the package

• Level: Beginner

• Reading Time: 2 minutes

• Checked with: Unity 2018.3.14f1

Introduction

The package contains two distinct sub packages and these prefabs can be included in a Unity software project via the Unity Package Manager.

Interactors

The Interactors/Interactions.Interactor prefab provides a mechanism for determining when an interactable object has been touched and can have an action injected to determine when to send the grab signal, which simply passes over this state to the interactable object being touched. Upon the interactable object receiving this state, it will execute the appropriate action such as following the interactor (to represent grabbing).

The Interactors/Interactions.ActionPublisher prefab provides a mechanism for sending action data from the interactor over to a Interactors/Interactions.ActionReceiver prefab in the form of boolean, float or vector2 actions. This can be useful for sending custom controller button data to be used within the interactable object.

Interactables

The Interactables/Interactions.Interactable prefab provides a structure to determine a Unity GameObject as an interactable object within the spatial scene. It receives data from the appropriate interactor to inform the interactable when it is being touched or should be manipulated.

The Interactors/Interactions.ActionReceiver prefab provides a mechanism for receiving action data from the valid Interactors/Interactions.ActionPublisher prefab in the form of boolean, float or vector2 actions. This received data can then be tied specifically to an individual or multiple interactable objects to provide custom controls.

Let's Start

Step 1: Creating a Unity project

You may skip this step if you already have a Unity project to import the package into.

• Create a new project in the Unity software version 2018.3.10f1 (or above) using 3D Template or open an existing project.

Step 2: Configuring the Unity project

• Ensure the project Scripting Runtime Version is set to .NET 4.x Equivalent:
  • In the Unity software select Main Menu -> Edit -> Project Settings to open the Project Settings inspector.
  • Select Player from the left hand menu in the Project Settings window.
  • In the Player settings panel expand Other Settings.
  • Ensure the Scripting Runtime Version is set to .NET 4.x Equivalent.

Step 3: Adding the package to the Unity project manifest

• Navigate to the Packages directory of your project.

• Adjust the project manifest file manifest.json in a text editor.

  • Ensure https://registry.npmjs.org/ is part of scopedRegistries.
    • Ensure io.extendreality is part of scopes.
  • Add io.extendreality.tilia.interactions.interactables.unity to dependencies, stating the latest version.

  A minimal example ends up looking like this. Please note that the version X.Y.Z stated here is to be replaced with the latest released version which is currently .

  {
    "scopedRegistries": [
      {
        "name": "npmjs",
        "url": "https://registry.npmjs.org/",
        "scopes": [
          "io.extendreality"
        ]
      }
    ],
    "dependencies": {
      "io.extendreality.tilia.interactions.interactables.unity": "X.Y.Z",
      ...
    }
  }
  

• Switch back to the Unity software and wait for it to finish importing the added package.

Done

The Tilia Interactions Interactables Unity package will now be available in your Unity project Packages directory ready for use in your project.

The package will now also show up in the Unity Package Manager UI. From then on the package can be updated by selecting the package in the Unity Package Manager and clicking on the Update button or using the version selection UI.