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Add Support for Video Games as a Medium of Control/Recording #1193

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mgagvani
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This PR introduces two parts:

  1. ScreenCamera is a part in camera.py which takes screenshots and uses those as camera images.
  2. VirtualController in actuator.py is a part for an emulated Xbox controller which can be used to control a car in videogames.

I used these two parts to make a (mostly) successful pilot in Forza Horizon 3: https://youtu.be/LIuH6aonYWU

import numpy as np
from PIL import Image
import mss
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Please have a look at the failed tests, you need to add the python packages into setup.cfg in the right place. Likely we only want to support that in the PC installation but not on the robot.

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Please see my comments in the files.

self.sct = mss.mss()
self.running = True

self._monitor_thread = threading.Thread(target=self.take_screenshot, args=())
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Please have a look at other threaded parts. Threads are not started in the constructor but centrally in the car application, when adding the part as a threaded part - which is what you want to do for your part.

self.frame = img_arr
return img

def update(self):
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The method should not return but refresh the class member self.frame.

assert self.frame is not None
return self.frame

def run_threaded(self):
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No need to overwrite.

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