Projects
WheelchairTennisVR

WheelchairTennisVR

Overview

‘WheelchairTennisVR’ is a VR application based on motion sickness theory.

  • Documentation:
  • Technologies Used: |
  • Dev. Environment: Meta Quest 2
  • Dev. Period: Mar. 2024 - Jun. 2024

My Contributions

Implementation

  1. Wheelchair Movement
  • Applied torque to the Wheel Collider for forward and backward movements.
  • Used Transform Rotation for direction changes.
  • Represented handrims with rectangular cubes on the sides of the wheelchair to reflect the actual hand movements of the rider during acceleration.
  • Added sound and vibration to the wheels and handrims.
  1. Tennis Related
  • Determined racket and ball contact and differentiated weights for sweet spots and other areas.
  • Implemented elasticity using Physical Material.
  • Allowed players to gauge ball speed through ball trajectory colors.
  1. Miscellaneous
  • Provided realism with score determination and point light sources.

Motion Sickness Mitigation

  1. Stabilization
  • Implemented direction changes using Transform Rotation instead of torque to the Wheel Collider to prevent motion sickness caused by accelerated motion. Also fixed the Y-axis position.
  • Added suspension to the Wheel Collider.
  • Enhanced realism by appropriately adding sound and vibration and creating an indoor environment.

Usability Improvements

  1. Physics Adjustments
  • Adjusted the friction and stopping determination of the wheelchair to provide stable control.
  • Interpolated the basic momentum of the ball and the racket’s momentum to maintain the core experience of “hitting the ball.”
  • Positioned the racket accurately to improve tracking accuracy.

Limitations

  1. Multi-play
  • Need to implement functionality for multiple players to play the game.