Thursday, 2 April, 2020 UTC

How-To: Setup A Basic VR Multiplayer Ball Toss Using Normcore

How-To: Setup A Basic VR Multiplayer Ball Toss Using Normcore

Summary

7 Steps To Setup A Basic VR Multiplayer Ball Toss Using Normcore

Here’s how you can setup a functional multiplayer ball toss in less than 10 minutes. I saw a lot of people who had never worked with Multiplayer setup asking how to setup this scenario. It also took me a while to figure it out despite how simple Normcore makes it compared to other Multiplayer services. To save ya’ll the effort, here is my 7 step solution:
Setting Up The VR Player-
*This tutorial assumes you’ve already setup your OVRPlayerController through Oculus Integration
  1. Download Normcore and Import it into your Unity project here (Sign-Up required — It’s Worth It!)
  2. Once imported, setup VR player — Find “Realtime + VR Player” and drag it into Hierarchy (Normal>Examples>VR Player)
Add “Realtime + VR Player”
3. Create “App Key” here. Enter that App Key into “App Key” field on Realtime + VR Player”
Enter App Key
4. Drag “OVRPlayerController” onto the “Root” field, “CenterEyeAnchor” onto “Head”, “LeftHandAnchor” onto “Left Hand”, “RightHandAnchor” onto “Right Hand”
Add OVRPlayer to Avatar Manager Fields

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Setting Up The Throwable Object-
5. Create Prefab of Throwable Object — named “NormcoreGrabbable” (Add Rigidbody, Collider, OVRGrabbable script [assign grab point], RealTimeView script [uncheck ‘Owned by Creating Client’], RealTime Transform script, custom script to detect grab and ownership request (example GrabRequest script below)
Create Cube & Add Components
6. Place this prefab in the “Resources” folder (then delete from hierarchy)
Drag Cube to Resources (prefab)
7. Create InstantiateGrabbableObject script (example below), drag it onto “RealTime + VR Player” object currently in hierarchy.
Add InstantiateGrabbableObject

BOOM! You’re Done. Make a VR build and send it to a friend to test that shit out (because who wants to test out multiplayer features alone).

GrabRequest script-
using UnityEngine;
using Normal.Realtime;
public class GrabRequest : MonoBehaviour
{
private RealtimeView _realtimeView;
private RealtimeTransform _realtimeTransform;
private void Awake()
{
_realtimeView = GetComponent<RealtimeView>();
_realtimeTransform = GetComponent<RealtimeTransform>();
}
private void Update(){
if (gameObject.GetComponent<OVRGrabbable>().isGrabbed)
{
_realtimeTransform.RequestOwnership();
}
}
}
IntiantiateGrabbableObject script-
using UnityEngine;
using Normal.Realtime;
public class InstantiateGrabbableObject : MonoBehaviour
{
private Realtime _realtime;
private void Awake()
{
// Get the Realtime component on this game object
_realtime = GetComponent<Realtime>();
// Notify us when Realtime successfully connects to the room
_realtime.didConnectToRoom += DidConnectToRoom;
}
private void DidConnectToRoom(Realtime realtime)
{
//Instantiate the CubePlayer for this client once we've successfully connected to the room
Realtime.Instantiate("NormcoreGrabbable",                 // Prefab name
position: Vector3.up,          // Start 1 meter in the air
rotation: Quaternion.identity, // No rotation
ownedByClient: false,   // Make sure the RealtimeView on this prefab is NOT owned by this client
preventOwnershipTakeover: false,                // DO NOT prevent other clients from calling RequestOwnership() on the root RealtimeView.
useInstance: realtime);           // Use the instance of Realtime that fired the didConnectToRoom event.
}
}
**If you read this far, checkout our Asynchronous Multiplayer VR Game here to see how this works when done.
  • **not a Normcore employee, so all errors in above instruction are liable due to poor instruction by the writer, no fault of Normcore.

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https://medium.com/media/1e1f2ee7654748bb938735cbca6f0fd3/href
How-To: Setup A Basic VR Multiplayer Ball Toss Using Normcore was originally published in AR/VR Journey: Augmented & Virtual Reality Magazine on Medium, where people are continuing the conversation by highlighting and responding to this story.

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