Movement Limitation

The Movement Limitation script can be found in ExampleScripts and shows how to place a proximity sensor inside of a large space that uses the head position as a target in order to not allow a user past a certain point. When the user enters the sensor they are automatically pushed back by one meter. 

import sightlab_utils.sightlab as sl

from sightlab_utils.settings import * 

sightlab = sl.SightLab(gui=False)

env = vizfx.addChild("sightlab_resources/example_resources/lab_collision.osgb")

env.collidePlane()

sightlab.setEnvironment(env) 

transportNode = vizconnect.getTransport('main_transport').getNode3d()

import vizproximity

manager = vizproximity.Manager()

# Add main viewpoint as proximity target

target = vizproximity.Target(viz.MainView)

manager.addTarget(target)

collideBox = env.getChild('collideBox')

hallwaySensor = vizproximity.addBoundingBoxSensor(collideBox)

manager.addSensor(hallwaySensor)

manager.setDebug(viz.ON)

def pushBack(e):

print('pushed back')

newPosition = [0, 0.0, -1]

transportNode.setPosition(newPosition)

manager.onEnter(hallwaySensor,pushBack)

def sightLabExperiment():

while True:

yield viztask.waitKeyDown(' ')

yield sightlab.startTrial()

yield viztask.waitKeyDown(' ')

yield sightlab.endTrial()

viztask.schedule(sightlab.runExperiment)

viztask.schedule(sightLabExperiment)

viz.callback(viz.getEventID('ResetPosition'), sightlab.resetViewPoint)