ptft
Class Direction

java.lang.Object
  ptft.Direction

public final class Direction

extends java.lang.Object

This final class with a private constructor is used instead of final statics to provide type safety. (In C this would be done with an enum typedef.)

Field Summary

static Direction	E East
static Direction	N North
static Direction	NE North-East
static Direction	NW North-West
static Direction	S South
static Direction	SE South-East
static Direction	SW South-West
static Direction	W West

Method Summary

static Direction

next(Direction d) Enumerates directions.

Methods inherited from class java.lang.Object

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

Field Detail

N

public static final Direction N

North

S

public static final Direction S

South

W

public static final Direction W

West

E

public static final Direction E

East

NW

public static final Direction NW

North-West

NE

public static final Direction NE

North-East

SW

public static final Direction SW

South-West

SE

public static final Direction SE

South-East

Method Detail

next

public static Direction next(Direction d)

Enumerates directions. To enumerate all directions, pass any direction in and keep on calling this method until you get back to where you started from.

Parameters:

d - a place to start

Returns:

directions going around in a circle in the following order:
NW, N, NE, E, SE, S, SW, W, NW