ai
Class Variation

java.lang.Object
  ai.Variation

public class Variation
extends Object

A Variation represents the sequence of optimal plays from a game state. It is an immutable linked list, where each cell contains a move, the value associated with that cell, and the length of the list.

Specification Fields

• value : int // The value that the current player gets // by playing optimally.
• depth : int //The number of plays this Variation is known to.
• move : Move //The current move to make
• variation : Variation //The next player's Variation after the move Abstract invariant depth = length(variation) value is consistent.

Constructor Summary

Variation(int value)

Method Summary

Variation	cdr()
Variation	cons(Move move)
int	getDepth()
Move	getMove()
int	getValue()

Methods inherited from class java.lang.Object

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

Constructor Detail

Variation

public Variation(int value)

Method Detail

getValue

public int getValue()

Returns:

The value for this player with this variation.

getMove

public Move getMove()

Returns:

The move at this point of the variation.

getDepth

public int getDepth()

Returns:

The depth from this point of the variation.

cons

public Variation cons(Move move)

Returns:

A new variation with a given Move as the first move and this as the rest.

cdr

public Variation cdr()

Returns:

The rest of the Variation.