RandomWalkRobot.py

class RandomWalkRobot(Robot):
    """
    A RandomWalkRobot is a robot with the "random walk" movement strategy: it
    chooses a new direction at random at the end of each time-step.
    """
    def updatePositionAndClean(self):
        """
        Simulate the raise passage of a single time-step.

        Move the robot to a new position and mark the tile it is on as having
        been cleaned.
        """
        prev_pos = self.pos
        self.setRobotPosition(self.getRobotPosition().getNewPosition(random.randrange(360), self.speed))
        if (self.room.isPositionInRoom(self.pos)):
            self.room.cleanTileAtPosition(self.pos)
        else:
            self.pos = prev_pos
        self.setRobotDirection(random.randrange(360))