gridWorldTest
Class CrabCritter

java.lang.Object
  info.gridworld.actor.Actor
      info.gridworld.actor.Critter
          gridWorldTest.CrabCritter

public class CrabCritter
extends Critter

A CrabCritter looks at a limited set of neighbors when it eats and moves.
This class is not tested on the AP CS A and AB exams.

Constructor Summary

CrabCritter()

Method Summary

java.util.ArrayList<Actor>	getActors() A crab gets the actors in the three locations immediately in front, to its front-right and to its front-left
java.util.ArrayList<Location>	getLocationsInDirections(int[] directions) Finds the valid adjacent locations of this critter in different directions.
java.util.ArrayList<Location>	getMoveLocations() Gets a list of possible locations for the next move.
void	makeMove(Location loc) If the crab critter doesn't move, it randomly turns left or right.

Methods inherited from class info.gridworld.actor.Critter

act, processActors, selectMoveLocation

Methods inherited from class info.gridworld.actor.Actor

getColor, getDirection, getGrid, getLocation, moveTo, putSelfInGrid, removeSelfFromGrid, setColor, setDirection, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CrabCritter

public CrabCritter()

Method Detail

getActors

public java.util.ArrayList<Actor> getActors()

A crab gets the actors in the three locations immediately in front, to its front-right and to its front-left

Overrides:

getActors in class Critter

Returns:

a list of actors occupying these locations

getMoveLocations

public java.util.ArrayList<Location> getMoveLocations()

Description copied from class: Critter

Gets a list of possible locations for the next move. These locations must be valid in the grid of this critter. Implemented to return the empty neighboring locations. Override this method in subclasses to look elsewhere for move locations.
Postcondition: The state of all actors is unchanged.

Overrides:

getMoveLocations in class Critter

Returns:

list of empty locations immediately to the right and to the left

makeMove

public void makeMove(Location loc)

If the crab critter doesn't move, it randomly turns left or right.

Overrides:

makeMove in class Critter

Parameters:

loc - the location to move to

getLocationsInDirections

public java.util.ArrayList<Location> getLocationsInDirections(int[] directions)

Finds the valid adjacent locations of this critter in different directions.

Parameters:

directions - - an array of directions (which are relative to the current direction)

Returns:

a set of valid locations that are neighbors of the current location in the given directions