Class Direction

java.lang.Object
Direction
public class Direction extends Object
A notion of the eight directions things can move in.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    EAST
     
    static final int
    MAX_DIRECTION
    The largest possible direction value.
    static final int
    MIN_DIRECTION
    The smallest possible direction value.
    static final int
    NE
     
    static final int
    NONE
     
    static final int
    NORTH
     
    static final int
    NUM_DIRECTIONS
    The number of direction values.
    static final int
    NW
     
    static final int
    SE
     
    static final int
    SOUTH
     
    static final int
    SW
     
    static final int
    WEST
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    Direction()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static int
    random()
    Return a random direction-value.
    static int
    turn(int dir, int amount)
    Return a direction-value which is the specified turn from the specified direction value.

    Methods inherited from class java.lang.Object

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

  • Field Details

  • Constructor Details

    • Direction

      public Direction()

  • Method Details

    • turn

      public static int turn(int dir, int amount)
      Return a direction-value which is the specified turn from the specified direction value. The turn amount is the number of directions to turn - e.g. turn(Direction.NORTH,2) will return Direction.EAST. A negative amount means to turn counter-clockwise, a positive amount turns clockwise.
      Parameters:
      dir - the direction (MIN_DIRECTION <= dir <= MAX_DIRECTION)
      amount - the number of directions to turn from the current direction (positive = clockwise, negative = counter-clockwise)
      Returns:
      the new direction

    • random

      public static int random()
      Return a random direction-value.
      Returns:
      random direction value