As we successfully created our targeting Quest 2 device in the previous post, now we will get insight into one of the most powerful set of capabilities provided by Meta via Presence Platform. first Unity project What is Meta’s Presence Platform? The Presence Platform is to create a sense of shared presence and interaction in virtual reality environments. It enables people to connect, interact, engage with each other in immersive virtual spaces using VR headsets. designed Features and capabilities of Meta's Presence Platform include: The Presence Platform allows users to create and customize their digital avatars, which represent them in the virtual world. These avatars can mimic users' real-life movements, expressions, and gestures, enhancing the feeling of presence and social interaction. Avatar System: Users can meet and interact with friends and other people in shared virtual environments. They can engage in various activities together, such as playing games, attending virtual events, watching videos, and more. Social Interaction: The platform incorporates spatial audio, which means that the sound in the virtual environment is location-based. This creates a more realistic and immersive audio experience, as users can hear sounds coming from specific directions, just like in the real world. Spatial Audio: The Presence Platform supports hand tracking technology, enabling users to use their hands and fingers directly in VR without the need for controllers. This makes interactions more natural and intuitive. Hand Tracking: The platform is designed to work across different Oculus VR headsets, allowing users with different devices to join and interact with each other seamlessly. Cross-Platform Support: For developers, the Presence Platform provides tools and APIs to create and publish VR applications, games, and experiences, enabling a thriving ecosystem of virtual content. Content Creation Tools: Starting with Hand tracking As you can see Presence Platform is comprehensive set of sub-system/features, and I will cover each of them in detail, but to get started - let’s start from hand tracking as one of the basic requirements for VR game development - we will setup, build and launch hand tracking game like experience. A perfect starting point is experience provided by oculus-samples . Unity-FirstHand repo Again, please refer to on setting up development environment, and make sure various dependencies are installed. previous post Ensure you have Git LFS installed, run this command: git lfs install Then, clone repo using the "Code", opening in Github desktop and running the following command: git clone https://github.com/oculus-samples/Unity-FirstHand.git All of the actual project files are in Assets → Project. This folder includes all scripts and assets to run the sample, excluding Interaction SDK itself. The project includes v41 of the Oculus SDK, including Interaction SDK. You can find Interaction SDK in [Assets/Oculus/Interaction]{Assets/Oculus/Interaction). After installing all required dependencies and configuring build to run on Quest device you will get something similar to above in your editor. Build and run Go to File → Build Settings if you are using Mac. If you followed instruction from my previous post and connected your device, below is what you should see in Build Settings. Click Build and Run, allow a few minutes to Unity to build and wait for messages that your app is deploying to connected Quest device. Customization and making changes I strongly suggest you play with this example and try to customize components and scripts to learn how it works internally, to be able to do it head to Project section of your Unity editor and expand project directories hierarchy. We will be customizing LazerProjectile: public class LazerProjectile : ActiveStateObserver
    {
        [SerializeField] Transform _target;
        [SerializeField] GameObject _effect;
        [SerializeField] float _rayCastDelay = 0.5f;
        [SerializeField] float _fadeOutTime = 0.1f;
        [SerializeField] float _delayBetweenShots = 0.5f;
        [SerializeField] AudioTrigger _chargeUp;
        [SerializeField, Optional] AudioTrigger _chargeUpComplete;

        protected override void Update()
        {
            base.Update();

            Vector3 endPos = Vector3.Lerp(_target.position, transform.position + transform.forward * 20, 5 * Time.deltaTime);
            _target.position = endPos;
        }

        //......
    } Let’s increase Ray cast delay and test the app on the headset by replacing float _rayCastDelay = 0.1f; to float _rayCastDelay = 0.5f; Here is how it works! Try it yourself and let me know what you want to build using hand tracking.

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