vacworld

Class Direction

java.lang.Object

vacworld.Direction

public class Direction
extends java.lang.Object

A utility class that encapsulates information about compass directions. It includes a constant for each direction as well as two arrays, DELTA_X and DELTA_Y, that can be used to compute coordinates of a position one step in a given direction. For example, to compute the coordinates (northX,northY) of the position directly to the north of (x,y):

 int northX = x + DELTA_X[NORTH];
 int northY = y + DELTA_Y[NORTH];
 

Field Summary

Fields

Modifier and Type	Field and Description
static int[]	DELTA_X An array for determining the change in X position that would correspond to a step in the direction indexed.
static int[]	DELTA_Y An array for determining the change in Y position that would correspond to a step in the direction indexed.
static int	EAST
static int	NORTH
static int	SOUTH
static int	WEST

Constructor Summary

Constructors

Constructor and Description
Direction()

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.String	toString(int direction)

Methods inherited from class java.lang.Object

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

Field Detail

NORTH

public static final int NORTH

See Also:

Constant Field Values

EAST

public static final int EAST

See Also:

Constant Field Values

SOUTH

public static final int SOUTH

See Also:

Constant Field Values

WEST

public static final int WEST

See Also:

Constant Field Values

DELTA_X

public static final int[] DELTA_X

An array for determining the change in X position that would correspond to a step in the direction indexed.

DELTA_Y

public static final int[] DELTA_Y

An array for determining the change in Y position that would correspond to a step in the direction indexed.

Constructor Detail

Direction

public Direction()

Method Detail

toString

public static java.lang.String toString(int direction)