Airsim: Unable to control multiple cars with Python API

[InfraredLaser]

Hello,

I have an issue controlling multiple vehicles using Python APIs.

Here are my specs:
-UE 4.24.3, VS2019, Python 3.7, Windows 10

I looked through this documentation https://microsoft.github.io/AirSim/multi_vehicle/ to pilot multiple cars as well as run a simple script in the image below. I can get multiple cars to spawn, however only the first vehicle responds to API commands.

Here is an image of my code and simulation environment:

Here is my settings.json file:

From what I can only assume, the simulator is able to identify multiple vehicles, but I am not quite sure why the second vehicle is not responding.

How am I able to use APIs to control multiple vehicles?

Thank you

[InfraredLaser]

So I took a look in to the Issues within the repository and tried/noticed a few things:

• Issue #1008 as per @buribae (Stephen Jang) states that simply adding port numbers in the settings.json like my below sample code is ineffective at controlling two vehicles with Python API.
  { "SettingsVersion": 1.2, "SimMode": "Car", "Vehicles": { "Car1": { "VehicleType": "PhysXCar", "ApiServerPort": 41451 }, "Car2": { "VehicleType": "PhysXCar", "X": -5, "Y": -4, "Z": 0, "ApiServerPort": 41452 } } }
  I thought that simply adding two SUV's by dragging and dropping their blueprints then running the simulation with the above settings.json would do the trick but it still does not work. I think you are only able to add drones by dragging and dropping their blueprints into their environments but not SUV's? I was also unable to find the file swarmControl.py from @saihv repository to see if the functionality in that file could be extracted to control multiple SUV's. Most of these responses are a few years old and I am hoping there is an easier way to add and control vehicles with API's.

[buribae]

@InfraredLaser Sharing in case you need swarmControl.py

[buribae]

@InfraredLaser BTW, it seems like AirSim people came up with codes for cars and drones.
car
drone

[InfraredLaser]

Thank you @buribae for the file PATH. I also took a look at the sample code for both car and drone above yet only the first vehicle is able to move with API's.

[InfraredLaser]

Ahhh silly me, after running the car file above yet again both vehicles suddenly moved with API's!
I took a look of the example code that I was running and compared it with the above code and it turns out that in my code I did not add the car name as a parameter in the setCarControls function, so only the first vehicle was responding to API commands.

This is the proper notation for setting the controls for a second vehicle and possible more.
client.setCarControls(car_controls_2, "Car2")

Now at least both of them can move! Thank you @buribae for the help!