Unable to create Johnson Valley scenario on BeamNG.tech 0.34.2.0

[raymondsong00]

Unable to load johnson_valley scenario with BeamNG.tech 0.34.2.0.

Version: BeamNG.tech 0.34.2.0, beamngpy 1.31
OS: Ubuntu 22.04 and Windows 10

Code (Modified from Readme):

from beamngpy import BeamNGpy, Scenario, Vehicle

if __name__ == "__main__":
    bng = BeamNGpy("localhost", 25252)
    bng.open()
    scenario = Scenario("johnson_valley", "example") 
    vehicle = Vehicle("ego_vehicle", model="etk800", license="PYTHON")

    scenario.add_vehicle(vehicle, rot_quat=(0, 0, 0, 1))
    scenario.make(bng)

    bng.scenario.load(scenario)
    bng.scenario.start()
    input("Hit Enter when done...")
    bng.disconnect()

Expected Behavior:
Create new Johnson Valley Scenario with vehicle and load in BeamNG.tech v0.34.2.0.

Actual Behavior:
Error message: beamngpy.logging.BNGValueError: Level not found: "/levels/johnson_valley/main.level.json"

Additional Context:
This code works as intended on

• BeamNG.tech 0.33.3.0, BeamNGpy 1.30, Ubuntu 22.04
• BeamNG.tech 0.31.3.0, BeamNGpy 1.28, Ubuntu 22.04
• BeamNG.tech 0.31.3.0, BeamNGpy 1.28, Windows 10

Tried 0.34.2.0 + Ubuntu with a clean download and userpath with the same issue.

Loading scenarios from Johnson Valley with bng.scenario.get_scenarios()['johnson_valley'] works as intended.

[aivora-beamng]

Hi @raymondsong00,
thank you very much for the detailed report! There's a bug in the load_scenario implementation, we will try to fix it ASAP on the upstream version. In the meantime, you can use this patched version of techCore.lua for BeamNG.tech 0.34.2.0, which you can copy over to %BNG_HOME%/lua/ge/extensions/tech:

techCore.lua.zip

[raymondsong00]

Thanks for the quick fix! Worked on both Windows 10 and Ubuntu 22.04.

I will leave the issue open for now until the upstream version is fixed.