smithers.logicpuzzles
Class SlitherlinkState

java.lang.Object
  smithers.logicpuzzles.SlitherlinkState

All Implemented Interfaces:

PuzzleState<Slitherlink>

public class SlitherlinkState
extends java.lang.Object
implements PuzzleState<Slitherlink>

Represents a state of a slitherlink puzzle. Note: isSolved() is not implemented yet.

Constructor Summary

SlitherlinkState(Slitherlink puzzle)
Constructs a state for the specified puzzle.

Method Summary

void	clearState() Clears the state of the puzzle.
int	getHorizontalState(int row, int column) Gets the state of the specified horizontal wall.
Slitherlink	getPuzzle() Returns the puzzle which this is a state of.
int	getVerticalState(int row, int column) Gets the state of the specified vertical wall.
boolean	isSolved() Determines whether or not the puzzle has been completely solved.
void	setHorizontalState(int row, int column, int state) Adds or removes a horizontal wall.
void	setVerticalState(int row, int column, int state) Adds or removes a vertical wall.
java.lang.String	toString() Generates a String representing the current situation of the puzzle.

Methods inherited from class java.lang.Object

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

Constructor Detail

SlitherlinkState

public SlitherlinkState(Slitherlink puzzle)

Constructs a state for the specified puzzle.

Parameters:

puzzle - the puzzle that this is a state of

Method Detail

getPuzzle

public Slitherlink getPuzzle()

Description copied from interface: PuzzleState

Returns the puzzle which this is a state of.

Specified by:

getPuzzle in interface PuzzleState<Slitherlink>

Returns:

the Puzzle which this PuzzleState relates to.

getHorizontalState

public int getHorizontalState(int row,
                              int column)

Gets the state of the specified horizontal wall.

Parameters:

row - the row index (from 0)

column - the column index (from 0)

Returns:

1 if the wall is present, 0 if not present, or -1 if unknown

getVerticalState

public int getVerticalState(int row,
                            int column)

Gets the state of the specified vertical wall.

Parameters:

row - the row index (from 0)

column - the column index (from 0)

Returns:

1 if the wall is present, 0 if not present, or -1 if unknown

setHorizontalState

public void setHorizontalState(int row,
                               int column,
                               int state)

Adds or removes a horizontal wall.

Parameters:

row - the row index (from 0)

column - the column index (from 0)

state - 1 to add the wall, 0 to remove, or -1 to set unknown

setVerticalState

public void setVerticalState(int row,
                             int column,
                             int state)

Adds or removes a vertical wall.

Parameters:

row - the row index (from 0)

column - the column index (from 0)

state - 1 to add the wall, 0 to remove, or -1 to set unknown

clearState

public void clearState()

Clears the state of the puzzle.

isSolved

public boolean isSolved()

Description copied from interface: PuzzleState

Determines whether or not the puzzle has been completely solved.

Specified by:

isSolved in interface PuzzleState<Slitherlink>

Returns:

true iff the puzzle has been completely solved

toString

public java.lang.String toString()

Generates a String representing the current situation of the puzzle. Represents a wall as '|' or '-', corners as '+', no wall as ' ', and unsure as '?'.

Specified by:

toString in interface PuzzleState<Slitherlink>

Overrides:

toString in class java.lang.Object

Returns:

a String representing the state