Package com.barrybecker4.game.twoplayer.gomoku.pattern

Class Patterns

java.lang.Object

com.barrybecker4.game.twoplayer.gomoku.pattern.Patterns

Direct Known Subclasses:

GoMokuPatterns, TicTacToePatterns

public abstract class Patterns
extends java.lang.Object

Encapsulates the domain knowledge for n in a row game. These are key patterns that can occur in the game and are weighted by importance to let the computer play better. Do not add duplicate patterns or patterns that are the reverse of other patterns.

Field Summary

Fields

Modifier and Type	Field	Description
static char	UNOCCUPIED	a blank space on the game board.

Constructor Summary

Constructors

Constructor	Description
Patterns()	Constructor.

Method Summary

Modifier and Type	Method	Description
abstract int	getMinInterestingLength()
protected abstract int	getNumPatterns()
protected abstract java.lang.String	getPatternString(int i)
protected abstract int	getWeightIndex(int i)
int	getWeightIndexForPattern(java.lang.CharSequence pattern)
int	getWeightIndexForPattern(java.lang.CharSequence pattern, int minpos, int maxpos)
abstract int	getWinRunLength()
protected void	initializePatterns()	Initialize all the gomoku patterns.
protected void	setPatternWeightInTable(java.lang.String pattern, int wtIndex)

Methods inherited from class java.lang.Object

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

Field Detail

UNOCCUPIED

public static final char UNOCCUPIED

a blank space on the game board.

See Also:

Constant Field Values

Constructor Detail

Patterns

public Patterns()

Constructor.

Method Detail

getWeightIndexForPattern

public int getWeightIndexForPattern(java.lang.CharSequence pattern,
                                    int minpos,
                                    int maxpos)

Parameters:

pattern - pattern to get the weight index for.

minpos - index of first character in pattern

maxpos - index of last character position in pattern.

Returns:

weight index

getWeightIndexForPattern

public int getWeightIndexForPattern(java.lang.CharSequence pattern)

Parameters:

pattern - pattern to get the weight index for.

Returns:

weight index

getWinRunLength

public abstract int getWinRunLength()

Returns:

how many in a row are needed to win. If M is five then the game is gomoku

getMinInterestingLength

public abstract int getMinInterestingLength()

Returns:

patterns shorter than this are not interesting and have weight 0

getNumPatterns

protected abstract int getNumPatterns()

Returns:

total number of patterns represented

initializePatterns

protected void initializePatterns()

Initialize all the gomoku patterns.

getPatternString

protected abstract java.lang.String getPatternString(int i)

getWeightIndex

protected abstract int getWeightIndex(int i)

setPatternWeightInTable

protected void setPatternWeightInTable(java.lang.String pattern,
                                       int wtIndex)