dorian
/
justcheckers
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Raw translation of Java code into Python code.

This commit is contained in:
Dorian 2014-08-18 23:29:13 -04:00
parent cf103bcbb8
commit d791840bdd
2 changed files with 536 additions and 702 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

749
justcheckers/game/board.py
View File

@ -17,477 +17,342 @@
# Please share and enjoy! # Please share and enjoy!
# #
/** from enum import Enum
* Container for the state of the checker board during a game.
*
* The size of the board is defined by the number of squares along one side,
* since all checker boards are square. The board coordinate system has both
* horizontal and vertical numeric components ranging from 0 to boardSize-1.
* Depicted on-screen, the horizontal component extends to the right and the
* vertical component extends downwards, making the upper left square (0, 0) and
* the lower right square (boardSize-1, boardSize-1).
*
* <b>Navigating through the Board</b> Internally, the checker board is
* organized as a two-dimensional array. So when iterating through the board,
* you first specify the vertical component and then the horizontal component.
* Another way of thinking about is first specifying which row you want to look
* at from top to bottom. Then you specify how across the row you are looking at
* from left to right.
*
* <b>Players Places</b> The light player (the starting player) starts at the
* top of the board. The dark player starts at the bottom of the board.
*
* @author Dorian Pula
* @author Ross Etchells
*/
public class Board {
/** Constant representing a dark king. */ from justcheckers.game import rules
public static final int DARK_KING = 4;
/** Constant representing a dark single man. */
public static final int DARK_PAWN = 3;
/** Constant representing an empty space. */
public static final int EMPTY_SPACE = 0;
// -- Constants ------------------------------------------------------------
/**
* Constant representing an illegal square. That is a white square in
* checkers.
*/
public static final int ILLEGAL_SPACE = -1;
/** Constant representing a light king. */
public static final int LIGHT_KING = 2;
/** Constant representing a light single man. */
public static final int LIGHT_PAWN = 1;
// -- Object Fields --------------------------------------------------------
/** Is the board mirrored or a regular checker board. */ class Square(Enum):
private final boolean amIMirrored; """Represents the state of a single square on a checkerboard."""
/** WHITE = -1
* Holds the positions of the pieces on the board. EMPTY = 0
*/ LIGHT_PAWN = 1
private final int[][] board; LIGHT_KING = 2
/** The size of the board. */ DARK_PAWN = 3
private final int boardSize; DARK_KING = 4
/** A reference to the rules being used. */
private final Rulebook myRules;
// -- Constructors ---------------------------------------------------------
/**
* Creates a new board for checkers.
*
* @param rules
* The rules for this board.
*/
public Board(Rulebook rules) {
this.myRules = rules;
final int size = this.myRules.getBoardSize();
this.board = new int[size][size];
this.boardSize = size;
this.amIMirrored = this.myRules.isBoardMirrored();
}
// -- Public Methods (Setting Up the Board) -------------------------------- class Board(object):
/** """
* Clears the board of pieces. Creates a brand new empty board already laid * Container for the state of the checker board during a game.
* out by the rules (regular or mirrored). *
*/ * The size of the board is defined by the number of squares along one side,
public void clearBoard() { * since all checker boards are square. The board coordinate system has both
for (int row = 0; this.boardSize > row; row++) { * horizontal and vertical numeric components ranging from 0 to boardSize-1.
for (int col = 0; this.boardSize > col; col++) { * Depicted on-screen, the horizontal component extends to the right and the
* vertical component extends downwards, making the upper left square (0, 0) and
* the lower right square (boardSize-1, boardSize-1).
*
* <b>Navigating through the Board</b> Internally, the checker board is
* organized as a two-dimensional array. So when iterating through the board,
* you first specify the vertical component and then the horizontal component.
* Another way of thinking about is first specifying which row you want to look
* at from top to bottom. Then you specify how across the row you are looking at
* from left to right.
*
* <b>Players Places</b> The light player (the starting player) starts at the
* top of the board. The dark player starts at the bottom of the board.
*
* @author Dorian Pula
* @author Ross Etchells
"""
// Mirrored has opposite setup to a regular board. def __init__(self, size=rules.Rules.STANDARD_BOARD_SIZE, mirrored=False):
if (row % 2 == 0 && col % 2 == 0) { self.board_size = size
if (this.amIMirrored) { self._board = [[]]
this.board[row][col] = Board.ILLEGAL_SPACE;
} else {
this.board[row][col] = Board.EMPTY_SPACE;
}
} else if (row % 2 == 0 && col % 2 == 1) {
if (this.amIMirrored) {
this.board[row][col] = Board.EMPTY_SPACE;
} else {
this.board[row][col] = Board.ILLEGAL_SPACE;
}
} else if (row % 2 == 1 && col % 2 == 0) {
if (this.amIMirrored) {
this.board[row][col] = Board.EMPTY_SPACE;
} else {
this.board[row][col] = Board.ILLEGAL_SPACE;
}
} else {
if (this.amIMirrored) {
this.board[row][col] = Board.ILLEGAL_SPACE;
} else {
this.board[row][col] = Board.EMPTY_SPACE;
}
}
} # /**
} # * Clears the board of pieces. Creates a brand new empty board already laid
} # * out by the rules (regular or mirrored).
# */
for row in xrange(0, size):
for col in xrange(0, size):
// -- Get/Set Methods ------------------------------------------------------ # Mirrored has opposite setup to a regular board.
/** if (row % 2 == 0) and (col % 2 == 0):
* Gets the size of the board. The board size is measured as the number of if mirrored:
* squares down one side of the board. self._board[row][col] = Square.WHITE
* else:
* @return The size of the board. self._board[row][col] = Square.EMPTY
*/
public int getBoardSize() {
return this.boardSize;
}
/** elif (row % 2 == 0) and (col % 2 == 1):
* Provides a reference to a 2 dimensional array representation of the if mirrored:
* current board state. This is for use by the user interface. Each self._board[row][col] = Square.EMPTY
* dimension of the array extends from 0 to boardSize - 1. Note that the else:
* referenced array is a clone of the internal board representation. Changes self._board[row][col] = Square.WHITE
* made to the array will not affect the board state.
*
* @return A 2 dimensional array representing the current state of the
* board.
*/
public int[][] getBoardState() {
final int[][] repBoard = new int[this.boardSize][this.boardSize];
System.arraycopy(this.board, 0, repBoard, 0, this.boardSize);
return repBoard;
}
/** elif (row % 2 == 1) and (col % 2 == 0):
* Determines whether the piece at board coordinate (row, col) is dark. If if mirrored:
* the coordinates do not exist on the board or are empty, this method will self._board[row][col] = Square.EMPTY
* return false. else:
* self._board[row][col] = Square.WHITE
* @param row else:
* The row of the square. if mirrored:
* @param col self._board[row][col] = Square.WHITE
* The column of the square. else:
* @return True if the piece at the specified coordinate is dark. False if self._board[row][col] = Square.EMPTY
* otherwise.
*/
public boolean isDark(int row, int col) {
if (row >= 0 && row < this.boardSize && col >= 0
&& col < this.boardSize) {
return this.board[row][col] == Board.DARK_KING
|| this.board[row][col] == Board.DARK_PAWN;
}
return false;
}
/** def is_inside_board(self, row, col):
* Determines whether the piece at board coordinate (row, col) is empty. If return (0 <= row < self.board_size) and (0 <= col < self.board_size)
* the coordinates do not exist on the board or is illegal, this method will
* return false.
*
* @param row
* The row of the square.
* @param col
* The column of the square.
* @return True if the piece at the specified coordinate is empty. False if
* otherwise.
*/
public boolean isEmpty(int row, int col) {
if (row >= 0 && row < this.boardSize && col >= 0
&& col < this.boardSize) {
return this.board[row][col] == Board.EMPTY_SPACE;
}
return false;
}
/** def is_dark(self, row, col):
* Determines whether the board coordinate (x, y) is used in the game. In """
* most cases, all light spaces on the board will be considered illegal. /**
* Also, any coordinate which does not exist is also considered illegal. * Determines whether the piece at board coordinate (row, col) is dark. If
* * the coordinates do not exist on the board or are empty, this method will
* @param row * return false.
* The row of the square. *
* @param col * @param row
* The column of the square. * The row of the square.
* @return True if the specified coordinate is nonexistent or unused in the * @param col
* current rules. False if otherwise. * The column of the square.
*/ * @return True if the piece at the specified coordinate is dark. False if
public boolean isIllegalSpace(int row, int col) { * otherwise.
if (row >= 0 && row < this.boardSize && col >= 0 */
&& col < this.boardSize) { """
return this.board[row][col] == Board.ILLEGAL_SPACE; return self.is_inside_board(row, col) and self._board[row][col] in [Square.DARK_KING, Square.DARK_PAWN]
}
return false;
}
/** def is_empty(self, row, col):
* Determines whether the piece at board coordinate (row, col) is a king. If """
* the coordinates do not exist on the board or are empty, this method will /**
* return false. * Determines whether the piece at board coordinate (row, col) is empty. If
* * the coordinates do not exist on the board or is illegal, this method will
* @param row * return False.
* The row of the square. *
* @param col * @param row
* The column of the square. * The row of the square.
* @return True if the piece at the specified coordinate is a king. False if * @param col
* otherwise. * The column of the square.
*/ * @return True if the piece at the specified coordinate is empty. False if
public boolean isKing(int row, int col) { * otherwise.
if (row >= 0 && row < this.boardSize && col >= 0 */
&& col < this.boardSize) { """
return this.board[row][col] == Board.LIGHT_KING return self.is_inside_board(row, col) and self._board[row][col] == Square.EMPTY
|| this.board[row][col] == Board.DARK_KING;
}
return false;
}
/** def is_illegal_space(self, row, col):
* Returns if a position specified is legal. Returns true if the position is """
* on the board, and if the space is not an illegal white space. Returns /**
* false otherwise. * Determines whether the board coordinate (x, y) is used in the game. In
* * most cases, all light spaces on the board will be considered illegal.
* @param row * Also, any coordinate which does not exist is also considered illegal.
* The row coordinate of the position. *
* @param col * @param row
* The column coordinate of the position. * The row of the square.
* @return Returns true if the position is a legal playing position. * @param col
*/ * The column of the square.
public boolean isLegalPosition(int row, int col) { * @return True if the specified coordinate is nonexistent or unused in the
return row >= 0 && row < this.boardSize && col >= 0 * current rules. False if otherwise.
&& col < this.boardSize && !this.isIllegalSpace(row, col); */
} """
return self.is_inside_board(row, col) and self._board[row][col] == Square.WHITE
/** # /**
* Determines whether the piece at board coordinate (row, col) is light. If # * Determines whether the piece at board coordinate (row, col) is a king. If
* the coordinates do not exist on the board or are empty, this method will # * the coordinates do not exist on the board or are empty, this method will
* return false. # * return False.
* # *
* @param row # * @param row
* The row of the square. # * The row of the square.
* @param col # * @param col
* The column of the square. # * The column of the square.
* @return True if the piece at the specified coordinate is light. False if # * @return True if the piece at the specified coordinate is a king. False if
* otherwise. # * otherwise.
*/ # */
public boolean isLight(int row, int col) { def is_king(self, row, col):
if (row >= 0 && row < this.boardSize && col >= 0 return self.is_inside_board(row, col) and self._board[row][col] in [Square.LIGHT_KING, Square.DARK_KING]
&& col < this.boardSize) {
return this.board[row][col] == Board.LIGHT_KING
|| this.board[row][col] == Board.LIGHT_PAWN;
}
return false;
}
/** # /**
* Determines whether the piece at board coordinate (row, col) is a pawn. If # * Returns if a position specified is legal. Returns true if the position is
* the coordinates do not exist on the board or are empty, this method will # * on the board, and if the space is not an illegal white space. Returns
* return false. # * False otherwise.
* # *
* @param row # * @param row
* The row of the square. # * The row coordinate of the position.
* @param col # * @param col
* The column of the square. # * The column coordinate of the position.
* @return True if the piece at the specified coordinate is a pawn. False if # * @return Returns true if the position is a legal playing position.
* otherwise. # */
*/ def is_legal_position(self, row, col):
public boolean isPawn(int row, int col) { return self.is_inside_board(row, col) and not self.is_illegal_space(row, col)
if (row >= 0 && row < this.boardSize && col >= 0
&& col < this.boardSize) {
return this.board[row][col] == Board.LIGHT_PAWN
|| this.board[row][col] == Board.DARK_PAWN;
}
return false;
}
// -- Board Updating Methods ----------------------------------------------- # /**
/** # * Determines whether the piece at board coordinate (row, col) is light. If
* Moves a pieces from one location to another. This method should be called # * the coordinates do not exist on the board or are empty, this method will
* from the Game using this Board. This method does not check for rule # * return False.
* validity but does check for illegal white spaces. Also checks that the # *
* destination position is empty. # * @param row
* # * The row of the square.
* @param sourceRow # * @param col
* The row from where the piece is moving from. # * The column of the square.
* @param sourceCol # * @return True if the piece at the specified coordinate is light. False if
* The column from where the piece is moving from. # * otherwise.
* @param targetRow # */
* The row to where the piece is moving to. def is_light(self, row, col):
* @param targetCol return self.is_inside_board(row, col) and self._board[row][col] in [Square.LIGHT_KING, Square.LIGHT_PAWN]
* The column to where the piece is moving to.
*/
protected void movePiece(int sourceRow, int sourceCol, int targetRow,
int targetCol) {
if (this.isLegalPosition(sourceRow, sourceCol) # /**
&& this.isLegalPosition(targetRow, targetCol) # * Determines whether the piece at board coordinate (row, col) is a pawn. If
&& this.board[targetRow][targetCol] == Board.EMPTY_SPACE) { # * the coordinates do not exist on the board or are empty, this method will
# * return False.
# *
# * @param row
# * The row of the square.
# * @param col
# * The column of the square.
# * @return True if the piece at the specified coordinate is a pawn. False if
# * otherwise.
# */
def is_pawn(self, row, col):
return self.is_inside_board(row, col) and self._board[row][col] in [Square.LIGHT_PAWN, Square.DARK_PAWN]
final int piece = this.board[sourceRow][sourceCol]; # /**
this.board[targetRow][targetCol] = piece; # * Moves a pieces from one location to another. This method should be called
this.board[sourceRow][sourceCol] = Board.EMPTY_SPACE; # * from the Game using this Board. This method does not check for rule
# * validity but does check for illegal white spaces. Also checks that the
# * destination position is empty.
# *
# * @param sourceRow
# * The row from where the piece is moving from.
# * @param sourceCol
# * The column from where the piece is moving from.
# * @param targetRow
# * The row to where the piece is moving to.
# * @param targetCol
# * The column to where the piece is moving to.
# */
def move_piece(self, source_row, source_col, target_row, target_col):
} if (self.is_legal_position(source_row, source_col)
} and self.is_legal_position(target_row, target_col)
and self._board[target_row][target_col] == Square.EMPTY):
/** self._board[source_row][source_col], self._board[target_row][target_col] = (
* Removes a pieces from the specified location. This method should be Square.EMPTY, self._board[source_row][source_col])
* called from the Game using this Board. This method does not check for
* rule validity but does check for illegal white spaces.
*
* @param row
* The row where the piece is to be removed from.
* @param col
* The column where the piece is to be removed from.
*/
protected void removePiece(int row, int col) {
if (this.isLegalPosition(row, col)) { # /**
this.board[row][col] = Board.EMPTY_SPACE; # * Removes a pieces from the specified location. This method should be
} # * called from the Game using this Board. This method does not check for
} # * rule validity but does check for illegal white spaces.
# *
# * @param row
# * The row where the piece is to be removed from.
# * @param col
# * The column where the piece is to be removed from.
# */
def remove_piece(self, row, col):
if self.is_legal_position(row, col):
self._board[row][col] = Square.EMPTY
/** # /**
* Setups the board for a new game. There are three different setups for the # * Setups the board for a new game. There are three different setups for the
* three different types of boards: # * three different types of boards:
* # *
* <table> # * <table>
* <tr> # * <tr>
* <b> # * <b>
* <td>Name</td> # * <td>Name</td>
* <td>Size</td> # * <td>Size</td>
* <td>Number of Pieces Per Player</td> # * <td>Number of Pieces Per Player</td>
* <td>Number of Rows Per Player</td> # * <td>Number of Rows Per Player</td>
* </b> # * </b>
* </tr> # * </tr>
* <tr> # * <tr>
* <td>Standard</td> # * <td>Standard</td>
* <td>8 x 8</td> # * <td>8 x 8</td>
* <td>12</td> # * <td>12</td>
* <td>3</td> # * <td>3</td>
* </tr> # * </tr>
* <tr> # * <tr>
* <td>International</td> # * <td>International</td>
* <td>10 x 10</td> # * <td>10 x 10</td>
* <td>20</td> # * <td>20</td>
* <td>4</td> # * <td>4</td>
* </tr> # * </tr>
* <tr> # * <tr>
* <td>Canadian</td> # * <td>Canadian</td>
* <td>12 x 12</td> # * <td>12 x 12</td>
* <td>30</td> # * <td>30</td>
* <td>5</td> # * <td>5</td>
* </tr> # * </tr>
* </table> # * </table>
* # *
* The columns containing the players' tokens alternate between columns. The # * The columns containing the players' tokens alternate between columns. The
* dark player traditionally takes the first few upper rows (0-3). The light # * dark player traditionally takes the first few upper rows (0-3). The light
* player takes the last of the lower rows (5-7, 6-9 or 7-11). # * player takes the last of the lower rows (5-7, 6-9 or 7-11).
* # *
* Note that the suicide checkers variant has a completely different setup, # * Note that the suicide checkers variant has a completely different setup,
* and has a setup function of its own: setupNewSuicideGame(). # * and has a setup function of its own: setupNewSuicideGame().
*/ # */
public void setupNewGame() { def setup_new_game(self):
this.clearBoard();
if (this.myRules.getCheckersVariant() == Rulebook.SUICIDE_CHECKERS) { # Used to decide which rows to fill up.
this.setupNewSuicideGame(); # Figure out the size of the board.
} else { if self.board_size == rules.InternationalRules.INTERNATIONAL_BOARD_SIZE:
dark_player_bottom_row = 3
light_player_top_row = 6
elif self.board_size == rules.CanadianRules.CANADIAN_BOARD_SIZE:
dark_player_bottom_row = 3
light_player_top_row = 7
else:
# Default board is 8x8 Standard size.
dark_player_bottom_row = 2
light_player_top_row = 5
// Used to decide which rows to fill up. # Go through the board and set it up.
int darkPlayerBottomRow; for row in xrange(0, self.board_size):
int lightPlayerTopRow; for col in xrange(0, self.board_size):
if row <= dark_player_bottom_row and self._board[row][col] == Square.EMPTY:
self._board[row][col] = Square.DARK_PAWN
elif row >= light_player_top_row and self._board[row][col] == Square.EMPTY:
self._board[row][col] = Square.LIGHT_PAWN
// Figure out the size of the board. # /**
if (this.boardSize == Rulebook.INTERNATIONAL_BOARD_SIZE) { # * Setups a checker board according to the suicide "French" rules.
darkPlayerBottomRow = 3; # */
lightPlayerTopRow = 6; def setup_new_suicide_game(self):
} else if (this.boardSize == Rulebook.CANADIAN_BOARD_SIZE) { # TODO: Implement the suicide game setup.
darkPlayerBottomRow = 3; pass
lightPlayerTopRow = 7;
} else { // Default board is 8x8 Standard size.
darkPlayerBottomRow = 2;
lightPlayerTopRow = 5;
}
// Go through the board and set it up. # /**
for (int row = 0; row < this.boardSize; row++) { # * Returns a string to represent the board state. This string is formatted
for (int col = 0; col < this.boardSize; col++) { # * for use as a simple board display in the command window.
if (row <= darkPlayerBottomRow # *
&& this.board[row][col] == Board.EMPTY_SPACE) { # * <b>Legend</b> ## - White space which the piece can not move on to. __ -
this.board[row][col] = Board.DARK_PAWN; # * An empty space. LP - A light pawn. LK - A light king. DP - A dark pawn.
} else if (row >= lightPlayerTopRow # * DK - A dark king.
&& this.board[row][col] == Board.EMPTY_SPACE) { # *
this.board[row][col] = Board.LIGHT_PAWN; # * @return A string representing the current board state.
} # */
} def __str__(self):
} # Prepare for output with a nice looking to banner.
output = " "
for row in xrange(0, self.board_size):
if row < 9:
output = '{}{}{}'.format(output, " ", row + 1)
else:
output = '{}{}{}'.format(output, " ", row + 1)
output = output + "\n\n"
} output_atom = {
} Square.WHITE: "## ",
Square.EMPTY: "__ ",
Square.LIGHT_PAWN: "LP ",
Square.LIGHT_KING: "LK ",
Square.DARK_PAWN: "DP ",
Square.DARK_KING:"DK ",
}
/** # Go row by row, printing out the row number and the board's state.
* Setups a checker board according to the suicide "French" rules. for row in xrange(0, self.board_size):
*/ if row < 9:
private void setupNewSuicideGame() { output = '{}{}{}'.format(output, " ", row + 1)
// TODO: Implement the suicide game setup. else:
} output = '{}{}{}'.format(output, " ", row + 1)
// -- Private (Implementation) Methods ------------------------------------- # // Get current row's state.
for col in xrange(0, self.board_size):
output = output + output_atom[self._board[row][col]]
/** output = output + "\n"
* Returns a string to represent the board state. This string is formatted
* for use as a simple board display in the command window.
*
* <b>Legend</b> ## - White space which the piece can not move on to. __ -
* An empty space. LP - A light pawn. LK - A light king. DP - A dark pawn.
* DK - A dark king.
*
* @return A string representing the current board state.
*/
@Override
public String toString() {
// Prepare for output with a nice looking to banner.
String output = " ";
for (int i = 0; i < this.boardSize; i++) {
if (i < 9) {
output = output + " " + (i + 1);
} else {
output = output + " " + (i + 1);
}
}
output = output + "\n\n";
// Go row by row, printing out the row number and the board's state. return output
for (int row = 0; row < this.boardSize; row++) {
if (row < 9) {
output = output + " " + (row + 1);
} else {
output = output + " " + (row + 1);
}
// Get current row's state.
for (int col = 0; col < this.boardSize; col++) {
switch (this.board[row][col]) {
case Board.ILLEGAL_SPACE:
output = output + "## ";
break;
case Board.EMPTY_SPACE:
output = output + "__ ";
break;
case Board.LIGHT_PAWN:
output = output + "LP ";
break;
case Board.LIGHT_KING:
output = output + "LK ";
break;
case Board.DARK_PAWN:
output = output + "DP ";
break;
case Board.DARK_KING:
output = output + "DK ";
break;
}
}
output = output + "\n";
}
return output;
}
}

417
justcheckers/game/game_engine.py
View File

@ -17,271 +17,240 @@
# Please share and enjoy! # Please share and enjoy!
# #
class GameEngine(object):
// TODO: Add a constructor for games already in progress. def canJump(game, sourceRow, sourceCol, targetRow, targetCol):
# TODO: Implement me.
# TODO: Make as private method.
return False
// -- Game methods --------------------------------------------------------
private static boolean canJump(Game game, int sourceRow, int sourceCol, int targetRow, # /**
int targetCol) { # * Returns if a piece can or cannot move. This move maybe either be a move
# * or a jump. This method is called by a user interface when a user wants to
# * moves a piece on screen or over the network. The piece can moved if the
# * current state of the game allows for it to do so.
# *
# * TODO: Add priority for king jumps over pawn jumps for any variants that
# * do so.
# *
# * @param sourceRow
# * The row from where the piece is moving from.
# * @param sourceCol
# * The column from where the piece is moving from.
# * @param targetRow
# * The row to where the piece is moving to.
# * @param targetCol
# * The column to where the piece is moving to.
# * @return True if the piece can move. False if the piece can not move.
# */
def canMove(game, sourceRow, sourceCol, targetRow, targetCol):
// TODO: Implement me. # // A few things to figure out priorities in moving a piece.
return false; legalMove = False
} # // Is the proposed move/jump legal?
realPositions = False
# // Are the positions really on the board?
isJump = False
# // Is this a jump?
/** # // Sanity check.
* Returns if a piece can or cannot move. This move maybe either be a move if (game.getGameBoard().isLegalPosition(sourceRow, sourceCol)
* or a jump. This method is called by a user interface when a user wants to and game.getGameBoard().isLegalPosition(targetRow, targetCol)):
* moves a piece on screen or over the network. The piece can moved if the realPositions = True
* current state of the game allows for it to do so.
*
* TODO: Add priority for king jumps over pawn jumps for any variants that
* do so.
*
* @param sourceRow
* The row from where the piece is moving from.
* @param sourceCol
* The column from where the piece is moving from.
* @param targetRow
* The row to where the piece is moving to.
* @param targetCol
* The column to where the piece is moving to.
* @return True if the piece can move. False if the piece can not move.
*/
public static boolean canMove(Game game, int sourceRow, int sourceCol, int targetRow,
int targetCol) {
// A few things to figure out priorities in moving a piece. # // Is there a jump in progress?
boolean legalMove = false; // Is the proposed move/jump legal? if (realPositions and game.getJumpInProgress() != None):
boolean realPositions = false; // Are the positions really on the board?
boolean isJump = false; // Is this a jump?
// Sanity check. # // Only allow the piece in movement to be moved.
if (game.getGameBoard().isLegalPosition(sourceRow, sourceCol) if (sourceRow == game.getJumpInProgress().getY()
&& game.getGameBoard().isLegalPosition(targetRow, targetCol)) { and sourceCol == game.getJumpInProgress().getX()):
realPositions = true; legalMove = canJump(game, sourceRow, sourceCol, targetRow,
targetCol)
isJump = True
} elif (realPositions):
// Is there a jump in progress? # // Go with the regular flow, jumps first then "slides".
if (realPositions && game.getJumpInProgress() != null) { isJump = canPlayerJump(game)
if isJump:
legalMove = canJump(game, sourceRow, sourceCol, targetRow,
targetCol)
else:
legalMove = canSlide(game, sourceRow, sourceCol, targetRow,
targetCol)
// Only allow the piece in movement to be moved. return legalMove
if (sourceRow == game.getJumpInProgress().getY()
&& sourceCol == game.getJumpInProgress().getX()) {
legalMove = canJump(game, sourceRow, sourceCol, targetRow,
targetCol);
isJump = true;
}
} else if (realPositions) { def canPlayerJump(game):
# // TODO: Implement me.
# TODO Make as private method
return False
// Go with the regular flow, jumps first then "slides". def canSlide(game, sourceRow, sourceCol, targetRow, targetCol):
isJump = canPlayerJump(game);
if (isJump) {
legalMove = canJump(game, sourceRow, sourceCol, targetRow,
targetCol);
} else {
legalMove = canSlide(game, sourceRow, sourceCol, targetRow,
targetCol);
}
} # TODO Make private
legalMove = True
mustJump = canPlayerJump(game)
return legalMove; # // Is the move even on the board?
} legalMove = game.getGameBoard().isLegalPosition(sourceRow, sourceCol)\
and game.getGameBoard().isLegalPosition(targetRow, targetCol)
private static boolean canPlayerJump(Game game) { # // See if the destination is even empty.
// TODO: Implement me. if (legalMove):
return false; legalMove = game.getGameBoard().isEmpty(targetRow, targetCol)
}
private static boolean canSlide(Game game, int sourceRow, int sourceCol, int targetRow, # // If yes, then look if right pieces were chosen.
int targetCol) { if (legalMove and not mustJump):
if (game.isLightPlayerTurn() and game.getGameBoard().isLight(sourceRow, sourceCol)):
boolean legalMove = true; # // To deal with flying kings.
boolean mustJump = canPlayerJump(game); if (game.getGameBoard().isKing(sourceRow, sourceCol)
and game.getGameRules().canKingsFly()):
// Is the move even on the board? # // FIXME: Fix this!
legalMove = game.getGameBoard().isLegalPosition(sourceRow, sourceCol) pass
&& game.getGameBoard().isLegalPosition(targetRow, targetCol); else:
# // if ((Math.abs(targetRow - sourceRow) == 1) && (Math.abs(targetRow - sourceRow) == 1)) {
# // legalMove = false;
// See if the destination is even empty. # // Is the path clear for that move?
if (legalMove) { pass
legalMove = game.getGameBoard().isEmpty(targetRow, targetCol);
}
// If yes, then look if right pieces were chosen. elif (not game.isLightPlayerTurn() and game.getGameBoard().isDark(sourceRow, sourceCol)):
if (legalMove && !mustJump) {
if (game.isLightPlayerTurn()
&& game.getGameBoard().isLight(sourceRow, sourceCol)) {
// To deal with flying kings. # //TODO: Implement me, sometime.
if (game.getGameBoard().isKing(sourceRow, sourceCol) pass
&& game.getGameRules().canKingsFly()) { else:
legalMove = False
// FIXME: Fix this! return legalMove;
} else {
// if ((Math.abs(targetRow - sourceRow) == 1) && (Math.abs(targetRow - sourceRow) == 1)) {
// legalMove = false;
// }
}
// Is the path clear for that move?
} else if (!game.isLightPlayerTurn() def checkForVictory(game):
&& game.getGameBoard().isDark(sourceRow, sourceCol)) { # // TODO: Implement me.
pass
//TODO: Implement me, sometime. # /**
} else { # * Gets if a piece is movable. Returns True if the piece can slide or jump.
legalMove = false; # * This method only calculates slides to the adjacent positions. Similarly,
} # * the method only looks at jumping an adjacent enemy piece. This check is
} # * used by the graphical user interface to determine if a piece can be moved
# * either for sliding or jumping. The method is aware of whose turn is it to
# * move.
# *
# * @param row
# * The row coordinate of the piece to check.
# * @param col
# * The column coordinate of the piece to check.
# * @return Returns True if the piece can slide or jump in this turn.
# */
def isMovablePiece(game, row, col):
return legalMove; # // Fields for determining of a piece is movable.
} moveUpLeft = True
moveUpRight = True
moveDownLeft = True
moveDownRight = True
private static void checkForVictory(Game game) { # /*
// TODO: Implement me. # * Checks first if the first colour of piece is being grabbed. Next if
} # * the piece is blocked by its own pieces. Next if the opponent has
# * double blocked off the pieces. Also sanity checks if looking past the
# * size of the board.
# */
if (game.isLightPlayerTurn() and game.getGameBoard().isLight(row, col)):
/** # // Light player.
* Gets if a piece is movable. Returns true if the piece can slide or jump.
* This method only calculates slides to the adjacent positions. Similarly,
* the method only looks at jumping an adjacent enemy piece. This check is
* used by the graphical user interface to determine if a piece can be moved
* either for sliding or jumping. The method is aware of whose turn is it to
* move.
*
* @param row
* The row coordinate of the piece to check.
* @param col
* The column coordinate of the piece to check.
* @return Returns true if the piece can slide or jump in this turn.
*/
public static boolean isMovablePiece(Game game, int row, int col) {
// Fields for determining of a piece is movable. # // Can piece move normally?
boolean moveUpLeft = true; moveDownLeft = canSlide(game, row, col, row + 1, col - 1)
boolean moveUpRight = true; moveDownRight = canSlide(game, row, col, row + 1, col + 1)
boolean moveDownLeft = true;
boolean moveDownRight = true;
/* if (game.getGameBoard().isKing(row, col)):
* Checks first if the first colour of piece is being grabbed. Next if moveUpLeft = canSlide(game, row, col, row - 1, col - 1)
* the piece is blocked by its own pieces. Next if the opponent has moveUpRight = canSlide(game, row, col, row - 1, col + 1)
* double blocked off the pieces. Also sanity checks if looking past the else:
* size of the board. moveUpLeft = False
*/ moveUpRight = False
if (game.isLightPlayerTurn() && game.getGameBoard().isLight(row, col)) { // Light
// player.
// Can piece move normally? # // If no slides available try doing the same except for jumps.
moveDownLeft = canSlide(game, row, col, row + 1, col - 1); if (not moveDownLeft):
moveDownRight = canSlide(game, row, col, row + 1, col + 1); moveDownLeft = canJump(game, row, col, row + 2, col - 2)
elif (not moveDownRight):
moveDownRight = canJump(game, row, col, row + 2, col + 2)
elif (game.getGameBoard().isKing(row, col)
or game.getGameRules().canPawnsJumpBackwards()):
if (game.getGameBoard().isKing(row, col)) { if (not moveUpLeft):
moveUpLeft = canSlide(game, row, col, row - 1, col - 1); moveUpLeft = canJump(game, row, col, row - 2, col + 2)
moveUpRight = canSlide(game, row, col, row - 1, col + 1); elif (not moveUpRight):
} else { moveUpRight = canJump(game, row, col, row - 2, col - 2)
moveUpLeft = false;
moveUpRight = false;
}
// If no slides available try doing the same except for jumps. return moveUpLeft or moveUpRight or moveDownLeft or moveDownRight
if (!moveDownLeft) {
moveDownLeft = canJump(game, row, col, row + 2, col - 2);
} else if (!moveDownRight) {
moveDownRight = canJump(game, row, col, row + 2, col + 2);
} else if (game.getGameBoard().isKing(row, col)
|| game.getGameRules().canPawnsJumpBackwards()) {
if (!moveUpLeft) { elif (game.isLightPlayerTurn() and game.getGameBoard().isDark(row, col)):
moveUpLeft = canJump(game, row, col, row - 2, col + 2); # // Dark player
} else if (!moveUpRight) {
moveUpRight = canJump(game, row, col, row - 2, col - 2);
}
} # // Can piece move normally?
moveUpLeft = canSlide(game, row, col, row - 1, col - 1)
moveUpRight = canSlide(game, row, col, row - 1, col + 1)
return moveUpLeft || moveUpRight || moveDownLeft || moveDownRight; if (game.getGameBoard().isKing(row, col)):
moveDownLeft = canSlide(game, row, col, row + 1, col - 1)
moveDownRight = canSlide(game, row, col, row + 1, col + 1)
else:
moveDownLeft = False
moveDownRight = False
} else if (game.isLightPlayerTurn() && game.getGameBoard().isDark(row, col)) { // Dark # // If no slides available try doing the same except for jumps.
// player if (not moveUpLeft):
moveUpLeft = canJump(game, row, col, row - 2, col - 2)
elif (not moveUpRight):
moveUpRight = canJump(game, row, col, row - 2, col + 2)
elif (game.getGameBoard().isKing(row, col)
or game.getGameRules().canPawnsJumpBackwards()):
// Can piece move normally? if (not moveDownLeft):
moveUpLeft = canSlide(game, row, col, row - 1, col - 1); moveDownLeft = canJump(game, row, col, row + 2, col + 2)
moveUpRight = canSlide(game, row, col, row - 1, col + 1); elif (not moveDownRight):
moveDownRight = canJump(game, row, col, row + 2, col - 2)
if (game.getGameBoard().isKing(row, col)) { return moveUpLeft or moveUpRight or moveDownLeft or moveDownRight
moveDownLeft = canSlide(game, row, col, row + 1, col - 1);
moveDownRight = canSlide(game, row, col, row + 1, col + 1);
} else {
moveDownLeft = false;
moveDownRight = false;
}
// If no slides available try doing the same except for jumps. else:
if (!moveUpLeft) { return False
moveUpLeft = canJump(game, row, col, row - 2, col - 2); # // A wrong coloured piece.
} else if (!moveUpRight) {
moveUpRight = canJump(game, row, col, row - 2, col + 2);
} else if (game.getGameBoard().isKing(row, col)
|| game.getGameRules().canPawnsJumpBackwards()) {
if (!moveDownLeft) { # /**
moveDownLeft = canJump(game, row, col, row + 2, col + 2); # * Moves a pieces from one location to another. This move maybe either be a
} else if (!moveDownRight) { # * move or a jump. This method is called by a user interface when a user
moveDownRight = canJump(game, row, col, row + 2, col - 2); # * moves a piece on screen or over the network. The piece is moved if the
} # * current state of the game allows for it to do so.
# *
# * TODO: Add priority for king jumps over pawn jumps for any variants that
# * do so. TODO: Implement jumping by piece removal.
# *
# * @param sourceRow
# * The row from where the piece is moving from.
# * @param sourceCol
# * The column from where the piece is moving from.
# * @param targetRow
# * The row to where the piece is moving to.
# * @param targetCol
# * The column to where the piece is moving to.
# */
def movePiece(game, sourceRow, sourceCol, targetRow, targetCol):
} # // If everything checks out... move the piecenot
if (canMove(game, sourceRow, sourceCol, targetRow, targetCol)):
if (game.getJumpInProgress() != None):
return moveUpLeft || moveUpRight || moveDownLeft || moveDownRight; # TODO: Implement jumping via removing of piece.
game.getGameBoard().movePiece(sourceRow, sourceCol, targetRow,
targetCol)
else:
game.getGameBoard().movePiece(sourceRow, sourceCol, targetRow,
targetCol)
} else { checkForVictory(game)
return false; // A wrong coloured piece.
}
}
/**
* Moves a pieces from one location to another. This move maybe either be a
* move or a jump. This method is called by a user interface when a user
* moves a piece on screen or over the network. The piece is moved if the
* current state of the game allows for it to do so.
*
* TODO: Add priority for king jumps over pawn jumps for any variants that
* do so. TODO: Implement jumping by piece removal.
*
* @param sourceRow
* The row from where the piece is moving from.
* @param sourceCol
* The column from where the piece is moving from.
* @param targetRow
* The row to where the piece is moving to.
* @param targetCol
* The column to where the piece is moving to.
*/
public static void movePiece(Game game, int sourceRow, int sourceCol, int targetRow,
int targetCol) {
// If everything checks out... move the piece!
if (canMove(game, sourceRow, sourceCol, targetRow, targetCol)) {
if (game.getJumpInProgress() != null) {
// TODO: Implement jumping via removing of piece.
game.getGameBoard().movePiece(sourceRow, sourceCol, targetRow,
targetCol);
} else {
game.getGameBoard().movePiece(sourceRow, sourceCol, targetRow,
targetCol);
}
checkForVictory(game);
}
}
}