RobotBrain

Moves the robot: causes it to change its location, turn around, or whatever else the robot does during its turn. What this means in practice depends on the type (subtype) of the robot brain.

moveBody is called by the brain’s controlTurn method every time the robot brain gets a turn, unless the robot is stuck (as defined by isStuck).

This method assumes that it is never called if the robot is broken or stuck.

Moves the robot one square forwards, if there is nothing there. If that square isn’t empty, the robot does not move, so this method never causes a collision.

(Note: This method only moves the robot in case the square in front of it is completely empty. This method does not call mayMove and is not affected by that other method’s implementation in any way.)

Controls the robot body’s actions for a single turn. If the brain considers the robot to be stuck (see isStuck), this method does nothing. If not stuck, the brain calls its own moveBody method, which carries out the actual robot actions.

Returns the direction this robot is facing in.

Determines whether the robot brain considers the robot to be stuck. A brain considers the robot stuck if and only if all the squares surrounding the robot contain obstacles, as defined by the mayMove method. Only four squares are considered: the nearest square in each of the four main compass directions.

Returns the location of this robot in its robot world.

Returns the coordinates that point at the square that is immediately in front of this robot.

Checks the square that neighbors this robot in the given direction to see if it contains something that the robot brain considers an obstacle. This method is abstract; different kinds of robot brains will have different definitions of what counts as an obstacle.

This default implementation (which may be overriden by subtypes) does not consider anything to be an obstacle. Robots that rely on this default implementation are willing to move in any direction and never consider themselves to be stuck (see isStuck).

Returns the robot’s name. If the name has been set to the empty string or contains only whitespace, returns "Incognito" instead.

Changes the robot’s name to the given one.

Note to students: In Scala, a method whose name ends in an underscore and an equals sign — like this one’s — can be called using a special syntax. For instance, this method can be called either with the statement bot.name_=("Suzy") or simply with an assignment statement: bot.name = "Suzy". You won’t find many uses for this in O1, but it’s nice to know nonetheless.

Returns the brain of the robot immediately in front of this robot. The brain is returned in an Option wrapper; None is returned if there is no robot in that square or if the robot that is there has no brain.

Returns the square that is immediately in front of this robot.

Returns a textual representation of the robot (which is the robot’s name).

Returns the world that this robot is located in.