NEW CLASS: Square

Class Square and Move work.

I'm still working on BitBoard.

TODO

@@ -0,0 +1,3 @@
+Créer une classe Piece pour mettre dans PromotionPiece dans Move.java
+
+Further testing of the moves : check if squares are valid (function is square ?)

src/suicideChess/BitBoard.java

@@ -5,6 +5,10 @@ package suicideChess;
  * 
  * This file contains the board representation.
  * The board is represented using bitboards.
+ * a1 is square 0
+ * h8 is square 7
+ * a2 is square 8
+ * ... and so on 
  * 
  * $LastChangedDate$
  * $LastChangedRevision$
@@ -18,7 +22,9 @@ public class BitBoard {
 	 *************/
 	
 	//Some constants to make code more readable
-	public static final int NB_OF_SQUARES = 64; 
+	public static final int NB_OF_RANKS = 8;
+	public static final int NB_OF_FILES = 8;
+	public static final int NB_OF_SQUARES = NB_OF_RANKS*NB_OF_FILES; 
 	
 	//Some constants used to access the bitboards
 	//Note that in suicide chess there may be more than one king
@@ -75,12 +81,14 @@ public class BitBoard {
 		return bitBoards[bitboard_number];
 	}
 		
-	/* TODO 
+	 
 	public void updateBitboards(String move) {
 
 	}
-	*/
 
-	public int squareToBitboardSquare()
 	
+	public int squareToBitboardSquare(Square square) {
+		//converts a square ("e2") to a BitboardSquare (
+		return square.getFileNb() -1 + (square.getRank()-1)*NB_OF_FILES; 
+	}
 }

src/suicideChess/Move.java

@@ -1,5 +1,7 @@
 package suicideChess;
 
+import suicideChess.Square.NotAValidSquare;
+
 /**
  * @author djib
  * 
@@ -17,12 +19,17 @@ public class Move {
 	 ********/
 	
 	//integers 
-	private String fromSquare;
+	private Square fromSquare;
-	private String toSquare;
+	private Square toSquare;
 	private String promotionPiece;
 	private boolean isPromotion;
 
 	public class NotAValidMoveException extends Exception {
+		/**
+		 * Generated by Eclipse
+		 */
+		private static final long serialVersionUID = 2194133427162274651L;
+
 		NotAValidMoveException(String s) { super(s); };
 	}
 	
@@ -31,7 +38,7 @@ public class Move {
 	 ***************/
 	
 	//The string is of type e2e4 (4 chars), b7b8q (5 chars) for promotions
-	public Move(String move) throws NotAValidMoveException {
+	public Move(String move) throws NotAValidMoveException, NotAValidSquare {
 		isPromotion = false;
 		promotionPiece = "";
 		switch (move.length()) {
@@ -40,8 +47,8 @@ public class Move {
 				promotionPiece = move.substring(4,5);
 				//no break statement here on purpose
 			case 4:
-				fromSquare = move.substring(0,2);
+				fromSquare = new Square(move.substring(0,2));
-				toSquare = move.substring(2,4);
+				toSquare = new Square(move.substring(2,4));		
 				break;
 			default:
 				throw new NotAValidMoveException("Invalid Move: "+move);
@@ -54,20 +61,23 @@ public class Move {
 	 * METHODS *
 	 ***********/
 	
-	public String fromSquare() {
+	public Square fromSquare() {
 		return fromSquare;
 	}
-	public String toSquare() {
+	public Square toSquare() {
 		return toSquare;
 	}
 	public boolean isPromotionMove() {
 		return isPromotion;
 	}
+	public String getPromotionPiece() {
+		return promotionPiece;
+	}
 	
-	public void setFromSquare(String square) {
+	public void setFromSquare(Square square) {
 		fromSquare = square;
 	}
-	public void setToSquare(String square) {
+	public void setToSquare(Square square) {
 		toSquare = square;
 	}
 	public void setIsPromotionMove(String piece) {
@@ -80,17 +90,6 @@ public class Move {
 	}
 	
 	public String toString() {
-		return fromSquare+toSquare+promotionPiece;
+		return fromSquare.toString()+toSquare+promotionPiece;
-	}
-	
-	public void display() {
-		System.out.println(" ");
-		System.out.println("==== Move  ====");
-		System.out.println("From square:"+fromSquare);
-		System.out.println("To square:  "+toSquare);
-		System.out.println((isPromotion ? "Promotion:   "+promotionPiece : "No Promotion"));
-		System.out.println("===============");
-		System.out.println(" ");
-		System.out.println(" ");
 	}
 }

src/suicideChess/Square.java

@@ -0,0 +1,51 @@
+package suicideChess;
+
+/**
+ * @author djib
+ * 
+ * This class avoids the use of strings for squares
+ * 
+ * $LastChangedDate$
+ * $LastChangedRevision$
+ * $LastChangedBy$
+ */
+
+
+public class Square {
+	private char file;
+	private int fileNb;
+	private int rank;
+
+	public class NotAValidSquare extends Exception {
+		/**
+		 * Generated by Eclipse
+		 */
+		private static final long serialVersionUID = 7586171991212094565L;
+
+		NotAValidSquare(String s) { super(s); };
+	}
+	
+	public Square(String square) throws NotAValidSquare {
+		if (square.length()!=2 || !(Character.isLetter(square.toCharArray()[0])) || 
+				!(Character.isDigit(square.toCharArray()[1]))) {
+			throw new NotAValidSquare(square);	
+		}
+		file = Character.toLowerCase(square.toCharArray()[0]);
+		fileNb = ((int)file) - ((int)'a') + 1;
+		rank = Integer.parseInt(square.substring(1,2));
+	}
+	
+	public char getFile() {
+		return file;
+	}
+	public int getRank() {
+		return rank;
+	}
+	public int getFileNb() {
+		return fileNb;
+	}
+	
+	public String toString() {
+		return String.valueOf(file)+String.valueOf(rank);
+	}
+}

src/tests/TestMoves.java

@@ -2,7 +2,9 @@ package tests;
 
 import java.io.BufferedReader;
 import java.io.InputStreamReader;
-import suicideChess.Move;
+
+import suicideChess.*;
+import suicideChess.Square.NotAValidSquare;
 
 /**
  * @author djib
@@ -22,13 +24,46 @@ public class TestMoves {
 		while (true) {
 			try {
 				String move = moveInput.readLine();
-				(new Move(move)).display();
+				//(new MoveTest(move)).display();
-
+				System.out.println((new BitBoard().squareToBitboardSquare(new Square(move))));
+				//new SquareTest(move).display();
+				//System.out.println(new Square(move));
 			} catch (Exception err) {
 				System.out.println(err);
 				break;
 	        }
 		}
 	}
-
+}
+
+class MoveTest extends Move {
+	public MoveTest(String move) throws NotAValidMoveException, NotAValidSquare {
+		super(move);
+	}
+	public void display() {
+		System.out.println(" ");
+		System.out.println("==== Move  ====");
+		System.out.println("From square:"+fromSquare());
+		System.out.println("To square:  "+toSquare());
+		System.out.println((isPromotionMove() ? "Promotion:   "+getPromotionPiece() : "No Promotion"));
+		System.out.println("===============");
+		System.out.println(" ");
+		System.out.println(" ");
+	}
+}
+
+class SquareTest extends Square {
+	public SquareTest(String square) throws NotAValidSquare {
+		super(square);
+	}
+	public void display() {
+		System.out.println(" ");
+		System.out.println("==== Square ====");	
+		System.out.println("Rank:   "+getRank());
+		System.out.println("File:   "+getFile());
+		System.out.println("FileNb: "+getFileNb());
+		System.out.println("===============");
+		System.out.println(" ");
+		System.out.println(" ");
+	}		
 }