Nosebot

o1.robots.Nosebot
class Nosebot(name: String, body: RobotBody) extends RobotBrain

The class Nosebot represents the “brains” of robots that move in the direction their nose points, in straight lines, only turning when they have to. They always turn right.

Parameters

body

the robot body whose actions the nosebot brain will control

name

the name of the nosebot

Attributes

Graph
Supertypes
trait RobotBrain
class Object
trait Matchable
class Any

Members list

Value members

Concrete methods

Attempts to move the robot one step forward in its current heading (as per advanceCarefully). Failing that, turns the robot 90 degrees clockwise instead.

Attempts to move the robot one step forward in its current heading (as per advanceCarefully). Failing that, turns the robot 90 degrees clockwise instead.

Attributes

Returns

true if the robot moved forward, false if the route was blocked and the robot turned instead

override def mayAdvance(direction: CompassDir): Boolean

Checks the square that neighbors the nosebot in the given direction to see if it contains something that the nosebot considers an obstacle. Nosebots are careful: they consider every square that isn’t empty to be an obstacle. This behavior overrides the default implementation from class RobotBrain.

Checks the square that neighbors the nosebot in the given direction to see if it contains something that the nosebot considers an obstacle. Nosebots are careful: they consider every square that isn’t empty to be an obstacle. This behavior overrides the default implementation from class RobotBrain.

(A consequence of this is that a nosebot will consider itself stuck unless there is at least one empty square next to it. See isStuck and controlTurn.)

Attributes

Definition Classes
def moveBody(): Unit

Moves the robot. A nosebot first looks at the next square in the direction it is currently facing. If that square is empty, it moves there and ends its turn. If the square was not empty, the bot turns 90 degrees clockwise and immediately tries again (during the same turn): it again moves a step forward if possible, and turns to check the next direction if necessary. In case the robot completes a 360-degree turnabout without finding a suitable square to move in, it ends its turn without changing location.

Moves the robot. A nosebot first looks at the next square in the direction it is currently facing. If that square is empty, it moves there and ends its turn. If the square was not empty, the bot turns 90 degrees clockwise and immediately tries again (during the same turn): it again moves a step forward if possible, and turns to check the next direction if necessary. In case the robot completes a 360-degree turnabout without finding a suitable square to move in, it ends its turn without changing location.

If other words, a nosebot uses its turn to call attemptMove up to four times.

As a nosebot always looks where it’s going, so it can never collide with anything during its own turn. A nosebot only ever moves a single square per turn.

This method assumes that it is not called if the robot is broken or stuck.

Attributes

Inherited methods

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.

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.

Attributes

Returns

true if the move was successful and the robot is now in the next square, false if it was blocked

Inherited from:
RobotBrain
def controlTurn(): Unit

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.

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.

Attributes

Inherited from:
RobotBrain

Returns the direction this robot is facing in.

Returns the direction this robot is facing in.

Attributes

Inherited from:
RobotBrain

Determines whether or not 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 unpassable obstacles, as defined by the mayAdvance method. Only the four nearest squares in the main compass directions are considered.

Determines whether or not 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 unpassable obstacles, as defined by the mayAdvance method. Only the four nearest squares in the main compass directions are considered.

Attributes

Inherited from:
RobotBrain

Returns the location of this robot in its robot world.

Returns the location of this robot in its robot world.

Attributes

Inherited from:
RobotBrain

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

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

Attributes

Inherited from:
RobotBrain
def name_=(newName: String): Unit

Changes the robot’s name to the given one.

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.

Attributes

Inherited from:
RobotBrain

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 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.

Attributes

Inherited from:
RobotBrain

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

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

Attributes

Inherited from:
RobotBrain
override def toString: String

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

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

Attributes

Definition Classes
Inherited from:
RobotBrain

Returns the world that this robot is located in.

Returns the world that this robot is located in.

Attributes

Inherited from:
RobotBrain