VRTK_TouchpadWalking

Overview

The ability to move the play area around the game world by sliding a finger over the touchpad is achieved using this script. The Touchpad Walking script is applied to the [CameraRig] prefab and adds a rigidbody and a box collider to the user's position to prevent them from walking through other collidable game objects.

If the Headset Collision Fade script has been applied to the Camera prefab, then if a user attempts to collide with an object then their position is reset to the last good known position. This can happen if the user is moving through a section where they need to crouch and then they stand up and collide with the ceiling. Rather than allow a user to do this and cause collision resolution issues it is better to just move them back to a valid location. This does break immersion but the user is doing something that isn't natural.

Inspector Parameters

• Left Controller: If this is checked then the left controller touchpad will be enabled to move the play area. It can also be toggled at runtime.
• Right Controller: If this is checked then the right controller touchpad will be enabled to move the play area. It can also be toggled at runtime.
• Max Walk Speed: The maximum speed the play area will be moved when the touchpad is being touched at the extremes of the axis. If a lower part of the touchpad axis is touched (nearer the centre) then the walk speed is slower.
• Deceleration: The speed in which the play area slows down to a complete stop when the user is no longer touching the touchpad. This deceleration effect can ease any motion sickness that may be suffered.

Example

SteamVR_Unity_Toolkit/Examples/017_CameraRig_TouchpadWalking has a collection of walls and slopes that can be traversed by the user with the touchpad. There is also an area that can only be traversed if the user is crouching. Standing up in this crouched area will cause the user to appear back at their last good known position.