To run a block of trials that is set up in the GUI, first set up you experiment using the GUI and then add this line of code when SightLab is called:
sightlab = sl.SightLab(configpath = "sightlab_configs/Randomize Blocks.stlb", repetitions = 2)
configPath - the path to the sightlab_config file that was created from the GUI (the project that you saved in "sightlab_configs")
repetitions - How many blocks you want to run
How to set a condition that only happens the first block
if sightlab.getTrialNumber() == 1 and sightlab.getCurrentRepetition() == 1:
This could be something like waiting for a keypress or showing an instruction screen
yield sightlab.startTrial(condition = [KEY_PRESS,SPACEBAR])
Example in Context
Find this example in ExampleScripts- Randomize - SightLab_VR_Randomize_Blocks.py. In the included Example there are 3 trials that are set to randomize between 3 different environments (by checking "Randomize" in the GUI when configuring the .stlb file). Note: If using a condition like startExperimentText, you would need to set the condition in the GUI to be whatever is the default one and use condition = in the code. This is different than the normal setup for the GUI with instructions.
import sightlab_utils.sightlab as sl
from sightlab_utils.settings import *
#Setup SightLab Options
sightlab = sl.SightLab(configpath = "sightlab_configs/Randomize Blocks.stlb", repetitions = 2)
def sightLabExperiment():
yield viztask.waitEvent(EXPERIMENT_START)
for trial in range(sightlab.getTrialCount()):
if sightlab.getTrialNumber() == 1 and sightlab.getCurrentRepetition() == 1:
yield sightlab.startTrial(condition = [NO_CONDITION, ""], startExperimentText =
"Press trigger When Ready")
elif sightlab.getTrialNumber() > 1:
yield viztask.waitEvent(TRIAL_START)
yield viztask.waitEvent(TRIAL_END)
viztask.schedule(sightlab.runExperiment)
viztask.schedule(sightLabExperiment)
viz.callback(viz.getEventID('ResetPosition'), sightlab.resetViewPoint)