CARLA_0.9.6/PythonAPI/carla/agents/navigation/carla_env.py [407:428]:
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    def _on_collision(self, event):
        impulse = event.normal_impulse
        intensity = math.sqrt(impulse.x ** 2 + impulse.y ** 2 + impulse.z ** 2)
        print('Collision (intensity {})'.format(intensity))
        self._collision_intensities_during_last_time_step.append(intensity)

    def reset(self):
        self.reset_vehicle()
        self.world.tick()
        self.reset_other_vehicles()
        self.world.tick()
        self.agent = RoamingAgentModified(self.vehicle, follow_traffic_lights=False)
        self.count = 0
        self.dist_s = 0
        self.return_ = 0
        self.velocities = []

        # get obs:
        obs, _, _, _ = self.step(action=None)
        return obs

    def reset_vehicle(self):
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CARLA_0.9.8/PythonAPI/carla/agents/navigation/carla_env.py [399:419]:
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    def _on_collision(self, event):
        impulse = event.normal_impulse
        intensity = math.sqrt(impulse.x ** 2 + impulse.y ** 2 + impulse.z ** 2)
        print('Collision (intensity {})'.format(intensity))
        self._collision_intensities_during_last_time_step.append(intensity)

    def reset(self):
        self.reset_vehicle()
        self.world.tick()
        self.reset_other_vehicles()
        self.world.tick()
        self.agent = RoamingAgentModified(self.vehicle, follow_traffic_lights=False)
        self.count = 0
        self.dist_s = 0
        self.return_ = 0
        self.velocities = []

        obs, _, _, _ = self.step(action=None)
        return obs

    def reset_vehicle(self):
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