becker.robots
Class Flasher

java.lang.Object
  becker.robots.Sim
      becker.robots.Thing
          becker.robots.Light
              becker.robots.Flasher

public class Flasher
extends Light

A flasher is commonly used to mark construction hazards on streets and avenues. Flashers are small enough for a robot to pick up and carry. They do not obstruct the movement of robots. Like all lights, they can be turned on and off. Unlike some kinds of lights, when flashers are "on" their lights cycle on and off. When flashers are turned "off" their lights stay off.

Author:

Byron Weber Becker

Constructor Summary

Flasher(City city, int avenue, int street)
Construct a new flasher, initially turned off.

Flasher(City city, int avenue, int street, boolean isOn)
Construct a new flasher.

Flasher(Robot heldBy)
Construct a new flasher held by a robot.

Method Summary

protected void	save(String indent, PrintWriter out) Save a representation of this flasher to an output stream.
String	toString() Print this object represented as a string.
void	turnOff() Turn the flasher off.
void	turnOn() Turn the flasher on so that it begins to flash.

Methods inherited from class becker.robots.Light

isOn

Methods inherited from class becker.robots.Thing

blocksIntersectionEntry, blocksIntersectionExit, canBeCarried, getIntersection, setBlocksEntry, setBlocksEntry, setBlocksExit, setBlocksExit, setCanBeCarried

Methods inherited from class becker.robots.Sim

getCity, getColor, getIcon, keyTyped, notifyObservers, notifyObservers, setColor, setIcon

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Flasher

public Flasher(City city,
               int avenue,
               int street)

Construct a new flasher, initially turned off.

Parameters:

city - The city in which the flasher will exist.

avenue - The flasher's initial avenue within the city.

street - The flasher's initial street within the city.

Flasher

public Flasher(City city,
               int avenue,
               int street,
               boolean isOn)

Construct a new flasher.

Parameters:

city - The city in which the flasher will exist.

avenue - The flasher's initial avenue within the city.

street - The flasher's initial street within the city.

isOn - True if the flasher is on; false otherwise.

Flasher

public Flasher(Robot heldBy)

Construct a new flasher held by a robot.

Parameters:

heldBy - the robot holding the flasher.

Method Detail

turnOn

public void turnOn()

Turn the flasher on so that it begins to flash.

Overrides:

turnOn in class Light

turnOff

public void turnOff()

Turn the flasher off.

Overrides:

turnOff in class Light

save

protected void save(String indent,
                    PrintWriter out)

Save a representation of this flasher to an output stream.

Overrides:

save in class Thing

Parameters:

indent - the indentation, for formatting purposes

out - the output stream

toString

public String toString()

Print this object represented as a string.

Overrides:

toString in class Thing