zinger.nibbles.drivers
Class SnakeDriverAdapter

java.lang.Object
  |
  +--zinger.nibbles.drivers.SnakeDriverAdapter

All Implemented Interfaces:

SnakeDriver

Direct Known Subclasses:

KeyboardSnakeDriver, SynchronousSnakeDriverAdapter

public class SnakeDriverAdapter

extends java.lang.Object

implements SnakeDriver

A simple adapter class for SnakeDriver interface. Direction can be changed asynchrously by calling enqueue(int) method. To receive notifications override the where method and return its result at the end. Because of this behavior, extensions of this class should not be assigned to more than one instance of Snake.

See Also:

enqueue(int), where(zinger.nibbles.Snake), Snake

Field Summary

private int	direction
private int[]	directionQueue
private int	offset
private int	start

Constructor Summary

SnakeDriverAdapter()

Method Summary

protected void	clear() Clears the queue.
protected void	enqueue(int direction)
int	where(Snake snake) This method is called on every turn as initiated by Field.

Methods inherited from class java.lang.Object

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

Field Detail

direction

private int direction

directionQueue

private int[] directionQueue

start

private int start

offset

private int offset

Constructor Detail

SnakeDriverAdapter

public SnakeDriverAdapter()

Method Detail

where

public int where(Snake snake)

Description copied from interface: SnakeDriver

This method is called on every turn as initiated by Field.

Specified by:

where in interface SnakeDriver

Following copied from interface: zinger.nibbles.SnakeDriver

See Also:

Field.timeCall(zinger.nibbles.Timer)

enqueue

protected void enqueue(int direction)

clear

protected void clear()

Clears the queue. Because of the circular array implementation of the queue, this operation is extremely cheap.