Version 0.8.0

=============
Just before creating the external config file

src/suicideChess/Board.java

@@ -68,11 +68,11 @@ public class Board {
     /**
      * Importance of real mobility in position evaluation (ie. how many moves can one make compared to the other)
      */
-    public static final int REAL_MOBILITY_VALUE = 1000; //10;
+    public static final int REAL_MOBILITY_VALUE = 40; //10;
     /**
      * Importance of relative mobility (mobility of other pieces that may not be able to play because of a compulsory move)
      */
-    public static final int RELATIVE_MOBILITY_VALUE = 1000; //5;
+    public static final int RELATIVE_MOBILITY_VALUE = 40; //5;
 
     //with less than that many pawns on one side, the computer will enter endgame mode
     public static final int ENDGAME_PAWNS = 3;
@@ -81,14 +81,22 @@ public class Board {
     public static final int ENDGAME_PIECES = 8;
     
     public static final int[] SQUARE_WEIGHT = {
-        -20,    -10,    -10,    -10,    -10,    -10,    -10,    -20,
+/*        -20,    -10,    -10,    -10,    -10,    -10,    -10,    -20,
         -10,    0,      3,      5,      5,      3,      0,      -10,
         -10,    2,      15,     15,     15,     15,     2,      -10,
         -10,    7,      15,     25,     25,     15,     7,      -10,
         -10,    7,      15,     25,     25,     15,     7,      -10,
         -10,    2,      15,     15,     15,     15,     2,      -10,
         -10,    0,      3,      5,      5,      3,      0,      -10,
-        -20,    -10,    -10,    -10,    -10,    -10,    -10,    -20
+        -20,    -10,    -10,    -10,    -10,    -10,    -10,    -20*/
+        10,     10,     10,     10,     10,     10,     10,     10,
+        10,     10,     10,     10,     10,     10,     10,     10,
+        10,     10,     10,     10,     10,     10,     10,     10,
+        10,     10,     10,     10,     10,     10,     10,     10,
+        10,     10,     10,     10,     10,     10,     10,     10,
+        10,     10,     10,     10,     10,     10,     10,     10,
+        10,     10,     10,     10,     10,     10,     10,     10,
+        10,     10,     10,     10,     10,     10,     10,     10
     };
     
 
@@ -621,7 +629,7 @@ public class Board {
                 //this is a very very basic evaluation function that will be changed.
                 //boardValue = numberOfBlackPieces - numberOfWhitePieces;
                 boardValue = 0;
-                if((numberOfPieces[Piece.BLACK_PAWN] <= ENDGAME_PAWNS) || (numberOfPieces[Piece.WHITE_PAWN] <= ENDGAME_PAWNS)
+                /*if((numberOfPieces[Piece.BLACK_PAWN] <= ENDGAME_PAWNS) || (numberOfPieces[Piece.WHITE_PAWN] <= ENDGAME_PAWNS)
                         || (numberOfPieces[Piece.BLACK_PIECES] <= ENDGAME_PIECES) || (numberOfPieces[Piece.WHITE_PIECES] <= ENDGAME_PIECES) ) {
                     //System.out.println("Playing endgame");
                     for (int i = Piece.OFFSET; i<=Piece.MAX_PIECE_NUMBER; i++) {
@@ -629,17 +637,18 @@ public class Board {
                     }
                 } else {
                     //System.out.println("Playing midgame");
-                    for (int i = Piece.OFFSET; i<=Piece.MAX_PIECE_NUMBER; i++) {
+                    /*for (int i = Piece.OFFSET; i<=Piece.MAX_PIECE_NUMBER; i++) {
-                        //boardValue += numberOfPieces[i]*Piece.PIECE_VALUE_MIDDLEGAME[i];
+                        boardValue += numberOfPieces[i]*Piece.PIECE_VALUE_MIDDLEGAME[i];
-                        for(int squareNb = 0; squareNb<NB_OF_SQUARES; squareNb++) {
+                    }*/
-                            Piece pieceOnSquare = getPiece(new Square(squareNb));
+                    for(int squareNb = 0; squareNb<NB_OF_SQUARES; squareNb++) {
-                            if(pieceOnSquare.getPieceNumber()!=Piece.NONE) {
+                        Piece pieceOnSquare = getPiece(new Square(squareNb));
-                                boardValue += SQUARE_WEIGHT[squareNb]*Piece.PIECE_VALUE_MIDDLEGAME[pieceOnSquare.getColor()];
+                        if(pieceOnSquare.getPieceNumber()!=Piece.NONE) {
-                            }
+                            //System.out.println(SQUARE_WEIGHT[squareNb]);
+                            boardValue += SQUARE_WEIGHT[squareNb]*Piece.PIECE_VALUE_MIDDLEGAME[pieceOnSquare.getPieceNumber()];
                         }
                     }
-                    boardValue += ((mobility(Piece.WHITE)-mobility(Piece.BLACK)));
+                    //boardValue += ((mobility(Piece.WHITE)-mobility(Piece.BLACK)));
-                }
+                //}
             }    
         }
         if (!Rules.isThereALegalMovesForPlayer(this)) {

src/suicideChess/ComputerPlayer.java

@@ -157,6 +157,13 @@ public class ComputerPlayer {
                         "\t"+((int)(thinkingEndTime.getTime()-thinkingBeginingTime.getTime())/10)+ //search time in centiseconds
                         "\t"+nodesSearched+"\t"+bestScore.getPrincipalVariation());
             }
+            
+            if((bitboard.getCurrentPlayer()==Piece.BLACK 
+                    && bestScore.getBranchValue()==Board.BLACK_WINS)
+                    || (bitboard.getCurrentPlayer()==Piece.WHITE 
+                    && bestScore.getBranchValue()==Board.WHITE_WINS)) {
+                break; //no need to continue iterative deepening.
+            }
         
         }
         if(SuicideChess.playInACSII()) {
@@ -249,6 +256,11 @@ public class ComputerPlayer {
                                            "\t"+nodesSearched+"\t"+bestVariationSoFar);
                                }
                                //System.out.println("*** Clear ");
+                               if(bestScoreSoFar==Board.BLACK_WINS) { //found a win, no need to go further
+                                   if(SuicideChess.playInACSII()) System.out.println("Found a win !");
+                                   bestMoves.add(allLegalMoves.get(i));
+                                   return new ReturnWrapper(beta,bestScoreSoFar,bestVariationSoFar);
+                               }
                            }
                         } 
                         if(currentDepth==0) {
@@ -294,6 +306,11 @@ public class ComputerPlayer {
                                             "\t"+((int)((new Date()).getTime()-thinkingBeginingTime.getTime())/10)+ //search time in centiseconds
                                             "\t"+nodesSearched+"\t"+bestVariationSoFar);
                                 }
+                                if(bestScoreSoFar==Board.WHITE_WINS) { //found a win, no need to go further
+                                    if(SuicideChess.playInACSII()) System.out.println("Found a win !");
+                                    bestMoves.add(allLegalMoves.get(i));
+                                    return new ReturnWrapper(alpha,bestScoreSoFar,bestVariationSoFar);
+                                }
                                 //System.out.println("*** Clear ");
                             }
                         }

src/suicideChess/ConfigFile.java

@@ -0,0 +1,150 @@
+package suicideChess;
+
+import java.io.BufferedReader;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.ArrayList;
+
+/**
+ * This class is used to read configuration settings for the AI
+ * 
+ * @author Jean-Baptiste Hétier
+ * @version $LastChangedRevision$, $LastChangedDate$
+ * 
+ */
+public class ConfigFile {
+
+    private static int[] pieceValuesMiddle;
+    private static int[] pieceValuesEnd;
+    private static int[] squareWeightMiddle;
+    private static int[] squareWeightEnd;
+    private static int primaryMobilityValueMiddle;
+    private static int primaryMobilityValueEnd;
+    private static int secondaryMobilityValueMiddle;
+    private static int secondaryMobilityValueEnd;
+    private static int endGamePawns;
+    private static int endGamePieces;
+    
+    /**
+     * The pieces value in the middlegame
+     */
+    public static int[] getPieceValuesMiddle() {
+        return pieceValuesMiddle;
+    }
+    /**
+     * The pieces value in the end
+     */
+        public static int[] getPieceValuesEnd() {
+            return pieceValuesEnd;
+        }
+        /**
+         * The weight of each square in the middle game
+         */
+        public static int[] getSquareWeightMiddle() {
+            return squareWeightMiddle;
+        }
+        /**
+         * The weight of each square in the endgame
+         */
+        public static int[] getSquareWeightEnd() {
+            return squareWeightEnd;
+        }
+        /**
+         * The primary mobility value (nb of possible legal moves) in the midgame
+         */
+        public static int getPrimaryMobilityValueMiddle() {
+            return primaryMobilityValueMiddle;
+        }
+        /**
+         * The  primary mobility value (nb of possible legal moves) in the endgame
+         */
+        public static int getPrimaryMobilityValueEnd() {
+            return primaryMobilityValueEnd;
+        }
+        /**
+         * The secondary mobility value (nb of possible but not legal moves) in the midgame
+         */
+        public static int getSecondaryMobilityValueMiddle() {
+            return secondaryMobilityValueMiddle;
+        }
+        /**
+         * The secondary mobility value (nb of possible but not legal moves)
+         */
+        public static int getScondaryMobilityValueEnd() {
+            return secondaryMobilityValueEnd;
+        }
+        /**
+         * Number of pawns on the opposite side before entering endgame
+         */
+        public static int getEndGamePawns() {
+            return endGamePawns;
+        }
+        /**
+         * Number of pieces on the opposite site before entering endgame
+         */
+        public static int getEndGamePieces() {
+            return endGamePieces;
+        }
+    
+    public static void load(String file) {
+        //declared here only to make visible to finally clause
+        BufferedReader problemReader = null;
+        try {
+            problemReader = new BufferedReader(new FileReader(file));
+            String line = null; //not declared within while loop
+            while ((line = problemReader.readLine()) != null) {
+                if (!line.startsWith("#")) { //ignore lines starting with # (comments)
+                    book.add(line.split("\\s")); //each space defines a new move
+                }
+            }
+        }
+        catch (FileNotFoundException e) {
+            System.out.println("File '"+file+"' not found. Opening book won't be available.");
+        }
+        catch (IOException e){
+            System.out.println("Error reading file '"+file+"'.");
+        }
+        finally {
+            try {
+                if (problemReader!= null) {
+                    problemReader.close();
+                }
+            }
+            catch (IOException ex) {
+                ex.printStackTrace();
+            }
+        }
+        System.out.println(book.size()+" opening variants loaded.");
+    }
+
+    
+    static {
+        pieceValuesMiddle[Piece.WHITE_KING]=-100; //500
+        pieceValuesMiddle[Piece.WHITE_QUEEN]=-100; //900
+        pieceValuesMiddle[Piece.WHITE_ROOK]=-100; //350
+        pieceValuesMiddle[Piece.WHITE_KNIGHT]=-100; //300
+        pieceValuesMiddle[Piece.WHITE_BISHOP]= -100; //started with -100, -400, -200
+        pieceValuesMiddle[Piece.WHITE_PAWN]= -100; //started with 100
+        pieceValuesMiddle[Piece.BLACK_KING]=-pieceValuesMiddle[Piece.WHITE_KING];
+        pieceValuesMiddle[Piece.BLACK_QUEEN]=-pieceValuesMiddle[Piece.WHITE_QUEEN];
+        pieceValuesMiddle[Piece.BLACK_ROOK]=-pieceValuesMiddle[Piece.WHITE_ROOK];
+        pieceValuesMiddle[Piece.BLACK_KNIGHT]=-pieceValuesMiddle[Piece.WHITE_KNIGHT];
+        pieceValuesMiddle[Piece.BLACK_BISHOP]=-pieceValuesMiddle[Piece.WHITE_BISHOP];
+        pieceValuesMiddle[Piece.BLACK_PAWN]=-pieceValuesMiddle[Piece.WHITE_PAWN];
+        pieceValuesEnd[Piece.WHITE_KING]=-400;
+        pieceValuesEnd[Piece.WHITE_QUEEN]=-400;
+        pieceValuesEnd[Piece.WHITE_ROOK]=-100;
+        pieceValuesEnd[Piece.WHITE_KNIGHT]=-700;
+        pieceValuesEnd[Piece.WHITE_BISHOP]=-400;
+        pieceValuesEnd[Piece.WHITE_PAWN]=-900;        
+        pieceValuesEnd[Piece.BLACK_KING]=-pieceValuesEnd[Piece.WHITE_KING];
+        pieceValuesEnd[Piece.BLACK_QUEEN]=-pieceValuesEnd[Piece.WHITE_QUEEN];
+        pieceValuesEnd[Piece.BLACK_ROOK]=-pieceValuesEnd[Piece.WHITE_ROOK];
+        pieceValuesEnd[Piece.BLACK_KNIGHT]=-pieceValuesEnd[Piece.WHITE_KNIGHT];
+        pieceValuesEnd[Piece.BLACK_BISHOP]=-pieceValuesEnd[Piece.WHITE_BISHOP];
+        pieceValuesEnd[Piece.BLACK_PAWN]=-pieceValuesEnd[Piece.WHITE_PAWN];
+
+    }
+    
+}

src/suicideChess/OpeningBook.java

@@ -87,7 +87,7 @@ public class OpeningBook {
      */
     public static void played(Move move) {
         for (int i=0; i<validMoves.length; i++) {
-            if(validMoves[i] && (book.get(i).length>=nbOfMovesThatHaveBeenPlayed)) {
+            if(validMoves[i] && (book.get(i).length>nbOfMovesThatHaveBeenPlayed)) {
                 if (!(book.get(i)[nbOfMovesThatHaveBeenPlayed].equals(move.toString()))) {
                     validMoves[i]=false; //this branch is not valid anymore
                 }
@@ -107,7 +107,7 @@ public class OpeningBook {
                     for(int j=nbOfMovesThatHaveBeenPlayed; j<book.get(i).length; j++) {
                         formatVariation += book.get(i)[j]+" ";
                     }
-                    System.out.println(1+"\t"+0+"\t"+0+"\t"+validMoves.length+"\t"+formatVariation+" [Book Move]");
+                    System.out.println(" "+1+"\t"+0+"\t"+0+"\t"+validMoves.length+"\t"+formatVariation+" [Book Move]");
                 }
             }
         }
@@ -118,7 +118,6 @@ public class OpeningBook {
         
         Random generator = new Random();
         Move chosenMove = possibleMoves.get(generator.nextInt(possibleMoves.size()));
-        played(chosenMove);
         return chosenMove;
     }
 

src/suicideChess/Piece.java

@@ -101,12 +101,12 @@ public class Piece {
         PIECE_VALUE_ENDGAME[BLACK_KNIGHT]=-PIECE_VALUE_ENDGAME[WHITE_KNIGHT];
         PIECE_VALUE_ENDGAME[BLACK_BISHOP]=-PIECE_VALUE_ENDGAME[WHITE_BISHOP];
         PIECE_VALUE_ENDGAME[BLACK_PAWN]=-PIECE_VALUE_ENDGAME[WHITE_PAWN];  */
-        PIECE_VALUE_MIDDLEGAME[WHITE_KING]=100;
+        PIECE_VALUE_MIDDLEGAME[WHITE_KING]=-100;
-        PIECE_VALUE_MIDDLEGAME[WHITE_QUEEN]=100;
+        PIECE_VALUE_MIDDLEGAME[WHITE_QUEEN]=-100;
-        PIECE_VALUE_MIDDLEGAME[WHITE_ROOK]=100;
+        PIECE_VALUE_MIDDLEGAME[WHITE_ROOK]=-100;
-        PIECE_VALUE_MIDDLEGAME[WHITE_KNIGHT]=100;
+        PIECE_VALUE_MIDDLEGAME[WHITE_KNIGHT]=-100;
-        PIECE_VALUE_MIDDLEGAME[WHITE_BISHOP]= 100; //started with -100, -400, -200
+        PIECE_VALUE_MIDDLEGAME[WHITE_BISHOP]= -100; //started with -100, -400, -200
-        PIECE_VALUE_MIDDLEGAME[WHITE_PAWN]= 100; //started with 100
+        PIECE_VALUE_MIDDLEGAME[WHITE_PAWN]= -100; //started with 100
         PIECE_VALUE_MIDDLEGAME[BLACK_KING]=-PIECE_VALUE_MIDDLEGAME[WHITE_KING];
         PIECE_VALUE_MIDDLEGAME[BLACK_QUEEN]=-PIECE_VALUE_MIDDLEGAME[WHITE_QUEEN];
         PIECE_VALUE_MIDDLEGAME[BLACK_ROOK]=-PIECE_VALUE_MIDDLEGAME[WHITE_ROOK];

src/suicideChess/SuicideChess.java

@@ -37,12 +37,12 @@ public class SuicideChess {
     /**
      * The name to be displayed
      */
-    public static final String NAME = "djib's SuShi v0.7.9";
+    public static final String NAME = "djib's SuShi v0.8.0";
     
     /**
      * Displays informations in the console.
      */
-    private static boolean asciiGame = false;
+    private static boolean asciiGame = true;
     
     /**
      * Should the game be played in acsii
@@ -153,7 +153,6 @@ public class SuicideChess {
         
         
         System.out.println("Welcome to SuicideChess "+SuicideChess.NAME+"!\n");
-        System.out.println("Type 'asciiplay' to be able to play in a terminal.");
         System.out.println("If you want a graphical interface, you can use XBoard, WinBoard or any compatible program.");
         System.out.println();
         
@@ -165,6 +164,10 @@ public class SuicideChess {
         Board bitboard = new Board();
         addPlayedPosition(bitboard);
         
+        bitboard.display();
+        System.out.println();
+        displayPlayer(bitboard);
+        
         boolean computerPlaying = true; //the computer does not play in foce mode.
         
         boolean playing = true;
@@ -182,6 +185,7 @@ public class SuicideChess {
                     } else if ((whatMove.length()>=12)&&(whatMove.substring(8,12).equals("load"))) {
                         SuicideProblems.suicideProblemsLoad(whatMove.substring(13));
                     } else {
+                        openingPhase=false;
                         try {
                             int problemNb = Integer.parseInt(whatMove.substring(8));
                             bitboard=new Board(SuicideProblems.getProblemNumber(problemNb));
@@ -204,6 +208,11 @@ public class SuicideChess {
                     
                     switch (xBoardCommand) {
                     case XBoardProtocol.XBOARD:
+                        asciiGame=false;
+                        break;
+                    case XBoardProtocol.ACCEPTED:
+                        break;
+                    case XBoardProtocol.VARIANT_SUICIDE:
                         break;
                     case XBoardProtocol.PROTOVER:
                         XBoardProtocol.initialise();
@@ -238,7 +247,6 @@ public class SuicideChess {
                         System.out.println("Hint: "+ComputerPlayer.doRandomMove(bitboard));
                         break;
                     case XBoardProtocol.FORCE:
-                        openingPhase=false; //don't know what will happen next
                         computerPlaying = false;
                         break;
                     case XBoardProtocol.PING:
@@ -273,6 +281,17 @@ public class SuicideChess {
                             System.out.println("Not a valid depth: "+ whatMove.substring(3));
                         }
                         break;
+                    case XBoardProtocol.BOOK:
+                        //display book moves
+                        boolean temp = postThinkingOutput;
+                        postThinkingOutput=true;
+                        try {
+                            OpeningBook.getMove(bitboard);
+                        } catch (NoOpeningMovesLeft e) {
+                            openingPhase = false;
+                        }
+                        postThinkingOutput=temp;
+                        break;
                     case XBoardProtocol.UNKNOWN:
                         if (acceptedUsermove) {
                             System.out.println("Error (unknown command): "+whatMove);
@@ -365,6 +384,7 @@ public class SuicideChess {
                             if(openingPhase) {
                                  try {
                                      computerMove = OpeningBook.getMove(bitboard);
+                                     OpeningBook.played(computerMove);
                                  } catch (NoOpeningMovesLeft e) {
                                      openingPhase = false;
                                      computerMove = ComputerPlayer.doAlphaBetaMove(bitboard);

src/suicideChess/XBoardProtocol.java

@@ -87,9 +87,21 @@ public class XBoardProtocol {
      */
     public static final int SETBOARD = 17;
     /**
-     * XBoard send a signal to limit ply depth
+     * XBoard sends a signal to limit ply depth
      */
     public static final int SETPLY = 18;
+    /**
+     * XBoard sends an accepted signal
+     */
+    public static final int ACCEPTED = 19;
+    /**
+     * XBoard sends an 'variant suicide' signal
+     */
+    public static final int VARIANT_SUICIDE = 20;
+    /**
+     * XBoard sends a book request
+     */
+    public static final int BOOK = 21;
     /**
      * Unknown command
      */
@@ -166,6 +178,12 @@ public class XBoardProtocol {
             return SETBOARD;
         } else if (command.startsWith("sd")) {
             return SETPLY;
+        } else if (command.startsWith("accepted")) {
+            return ACCEPTED;
+        } else if (command.equals("variant suicide")) {
+            return VARIANT_SUICIDE;
+        } else if (command.equals("bk")) {
+            return BOOK;
         }
 
         return UNKNOWN;