Gabriel Kwa

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XR Multiplayer 3D Drawing app

I made a 3D drawing app with cross-play that can handle up to 4 players (+1 Host Device).
Use your client devices to draw in 3D space and see the artwork on the host device.

Tech used:

Unity Transport
Google ARKit
ZXing

Requirements:

Client devices need a camera, magnetometer, gyro and accelerometer.
Devices must be connected on the same network, its a LAN “game”.
Lighting must be adequate for good tracking

Download APK here

Download PC Host here

How to Play

Install and launch the app/program.
Select [Host] to start a room instance on any device (Ideally one that isn’t moving)
Select [Client] on another device to connect to the host by either:
- Typing in the Host’s IP (Displayed on screen)
- Scan the QR Code by pressing the QR icon, if unsuccessful, try manually typing in the other displayed addresses
You should now see a little head pop up in the room.
Stand the centre of an unobstructed area and face the host device
Bring your device close to your body’s torso and press [Centre]
Without moving, bring your device in front of you at about an arm’s length away from your body and press [Far]
Press [Calculate] to calculate the player position
Press [Offset] to reset your position to the middle of the room

Invite more players

Select the [JOIN QR] button on the Host Device and follow the instructions above.

Drawing

Press and hold [Draw] to draw a line, try moving your device and see it draw in real time.
Press and hold [Erase] to erase a line by colliding your player head with the line you want to erase
Press [Clear] on the host device to clear all lines.