The Unity-Technologies/XR-Interaction-Toolkit-Examples repository provides a collection of example scenes and scripts that demonstrate the usage of the XR Interaction Toolkit, a set of components and scripts in Unity that make it easier to build VR and AR applications. The examples cover a wide range of interaction scenarios and features of the toolkit.

Pros

• Comprehensive Examples: The repository contains a diverse set of example scenes and scripts that cover various aspects of the XR Interaction Toolkit, making it a valuable resource for learning and exploration.
• Active Development: The repository is actively maintained by the Unity Technologies team, ensuring that the examples stay up-to-date with the latest version of the toolkit.
• Detailed Documentation: Each example comes with a detailed README file that explains the purpose of the example and how to use it.
• Customizable: The examples are designed to be easily customizable, allowing developers to use them as a starting point for their own projects.

Cons

• Dependency on Unity: The examples are specific to the Unity game engine and may not be directly applicable to other development platforms.
• Steep Learning Curve: The XR Interaction Toolkit itself has a steep learning curve, and the examples may not be immediately accessible to developers who are new to Unity or VR/AR development.
• Limited Scope: While the examples cover a wide range of interaction scenarios, they may not address all the specific needs of a particular project.
• Potential Compatibility Issues: As the toolkit and Unity evolve, there may be compatibility issues with older versions of the examples.

Code Examples

Here are a few code examples from the repository:

1. Grab Interactable Example:

public class GrabInteractable : MonoBehaviour, IGrabInteractable
{
    public void ProcessInteractable(XRInteractionUpdateOrder.UpdatePhase updatePhase)
    {
        switch (updatePhase)
        {
            case XRInteractionUpdateOrder.UpdatePhase.Dynamic:
                // Update the object's position and rotation based on the interactor's movement
                transform.position = m_Interactor.transform.position;
                transform.rotation = m_Interactor.transform.rotation;
                break;
        }
    }

    public void OnSelectEntered(SelectEnterEventArgs args)
    {
        // Perform any necessary setup when the object is selected
        m_Interactor = args.interactor;
    }

    public void OnSelectExited(SelectExitEventArgs args)
    {
        // Perform any necessary cleanup when the object is deselected
        m_Interactor = null;
    }
}

This code example demonstrates how to implement a simple grab interactable object using the XR Interaction Toolkit.

2. Teleportation Example:

public class TeleportationProvider : MonoBehaviour, ITeleportationProvider
{
    public void StartTeleportation(TeleportRequest teleportRequest)
    {
        // Perform the teleportation logic
        transform.position = teleportRequest.destinationPosition;
        transform.rotation = teleportRequest.destinationRotation;
    }

    public bool CanTeleport(TeleportRequest teleportRequest)
    {
        // Check if the teleportation request is valid
        return true;
    }
}

This code example demonstrates how to implement a simple teleportation provider using the XR Interaction Toolkit.

3. Locomotion Example:

public class LocomotionSystem : MonoBehaviour, ILocomotionSystem
{
    public void UpdateLocomotion(LocomotionSystem.UpdatePhase updatePhase, float deltaTime)
    {
        switch (updatePhase)
        {
            case LocomotionSystem.UpdatePhase.Fixed:
                // Update the player's position and rotation based on the input
                transform.position += transform.forward * m_MoveSpeed * deltaTime;
                break;
        }
    }

    public void EnableLocomotion()
    {
        // Enable the locomotion system
        enabled = true;
    }

    public void DisableLocomotion()
    {
        // Disable the locomotion system
        enabled = false;
    }