de.sfuhrm.sudoku

Class Riddle

java.lang.Object

de.sfuhrm.sudoku.GameMatrix

de.sfuhrm.sudoku.Riddle

All Implemented Interfaces:

Cloneable

public class Riddle
extends GameMatrix
implements Cloneable

The Sudoku game field. This is a game matrix that has the information whether fields may be written to or not.

Author:

Stephan Fuhrmann

Field Summary

Fields inherited from class de.sfuhrm.sudoku.GameMatrix

BLOCK_SIZE, SIZE, UNSET

Constructor Summary

Constructors

Constructor and Description
Riddle() Creates an empty full-writable riddle.

Method Summary

Modifier and Type	Method and Description
Object	clone()
int	getFreeMask(int row, int column) Gets the free mask for the given cell.
boolean	getWritable(int row, int column) Get whether a certain field is writable.
void	set(int row, int column, byte value) Set the value of a field.
void	setWritable(int row, int column, boolean set) Set a certain field writable.

Methods inherited from class de.sfuhrm.sudoku.GameMatrix

block, canSet, clear, column, equals, get, getArray, getSetCount, hashCode, isValid, parse, row, setAll, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Riddle

public Riddle()

Creates an empty full-writable riddle.

Method Detail

getWritable

public final boolean getWritable(int row,
                                 int column)

Get whether a certain field is writable.

Parameters:

row - the row of the cell to get the writability for.

column - the column of the cell to get the writability for.

Returns:

true if the cell is writable.

setWritable

public final void setWritable(int row,
                              int column,
                              boolean set)

Set a certain field writable.

Parameters:

row - the row of the cell to set the writability for.

column - the column of the cell to set the writability for.

set - the value to set for the cell, true means writable.

clone

public Object clone()

getFreeMask

public int getFreeMask(int row,
                       int column)

Description copied from class: GameMatrix

Gets the free mask for the given cell.

Parameters:

row - the row of the cell to get the free mask for.

column - the column of the to get the free mask for.

Returns:

bit mask with the bit 1 telling whether the number 1 is free, the bit 2 telling whether the number 2 is free, and so on. The bit 0 is not used.

set

public void set(int row,
                int column,
                byte value)

Description copied from class: GameMatrix

Set the value of a field.

Overrides:

set in class GameMatrix

Parameters:

row - the row of the field.

column - the column of the field.

value - the value of the field.