pawn movements

OOP_2B1_Project/src/backend/Bishop.java

@@ -0,0 +1,53 @@
+package backend;
+
+import java.util.ArrayList;
+
+public class Bishop extends Piece {
+
+	public Bishop(int x, int y, boolean isWhite) {
+		super(x, y, PieceType.Bishop, isWhite);
+	}
+
+	@Override
+	public ArrayList<ArrayList<Boolean>> getPossibleMoves(ArrayList<ArrayList<Piece>> board) {
+		ArrayList<ArrayList<Boolean>> moves = new ArrayList<>();
+
+		// Initialize 8x8 move grid with false
+		for (int i = 0; i < 8; i++) {
+			ArrayList<Boolean> row = new ArrayList<>();
+			for (int j = 0; j < 8; j++) {
+				row.add(false);
+			}
+			moves.add(row);
+		}
+
+		// Diagonal directions: top-left, top-right, bottom-left, bottom-right
+		int[][] directions = {
+			{-1, -1},
+			{-1, 1},
+			{1, -1},
+			{1, 1}
+		};
+
+		for (int[] dir : directions) {
+			int newY = y + dir[0];
+			int newX = x + dir[1];
+
+			while (newX >= 0 && newX < 8 && newY >= 0 && newY < 8) {
+				Piece target = board.get(newY).get(newX);
+				if (target == null) {
+					moves.get(newY).set(newX, true); // Empty square
+				} else {
+					if (target.isWhite() != this.isWhite) {
+						moves.get(newY).set(newX, true); // Capture opponent
+					}
+					break; // Blocked by any piece
+				}
+				newY += dir[0];
+				newX += dir[1];
+			}
+		}
+
+		return moves;
+	}
+}

OOP_2B1_Project/src/backend/Board.java

@@ -45,7 +45,7 @@ public class Board {
 	}
 
 	public void setPiece(int x, int y, PieceType type,  boolean isWhite) {
-		Piece piece = new Piece(x,y,type,isWhite);
+		Piece piece = PieceCreation.createPiece(x,y,type,isWhite);
 		board.get(y).set(x, piece);
 	}
 
@@ -82,14 +82,11 @@ public class Board {
 	public void cleanBoard() {
 		int rows = 8;
 		int cols = 8;
-		for (int i = 0; i < rows; i++) {
-			ArrayList<Piece> row = new ArrayList<>();
-			for (int j = 0; j < cols; j++) {
-				row.add(null);  // Fill with null
+		for (int x = 0; x < rows; x++) {
+			for (int y = 0; y < cols; y++) {
+				this.board.get(y).set(x, null);
 			}
-			this.board.add(row);
 		}
-
 	}
 	
 	@Override

OOP_2B1_Project/src/backend/King.java

@@ -0,0 +1,50 @@
+package backend;
+
+import java.util.ArrayList;
+
+public class King extends Piece {
+
+	public King(int x, int y, boolean isWhite) {
+		super(x, y, PieceType.King, isWhite);
+	}
+
+	@Override
+	public ArrayList<ArrayList<Boolean>> getPossibleMoves(ArrayList<ArrayList<Piece>> board) {
+		ArrayList<ArrayList<Boolean>> moves = new ArrayList<>();
+
+		// Initialize 8x8 move grid with false
+		for (int i = 0; i < 8; i++) {
+			ArrayList<Boolean> row = new ArrayList<>();
+			for (int j = 0; j < 8; j++) {
+				row.add(false);
+			}
+			moves.add(row);
+		}
+
+		// All 8 directions
+		int[][] directions = {
+			{-1, 0},  // up
+			{1, 0},   // down
+			{0, -1},  // left
+			{0, 1},   // right
+			{-1, -1}, // top-left
+			{-1, 1},  // top-right
+			{1, -1},  // bottom-left
+			{1, 1}    // bottom-right
+		};
+
+		for (int[] dir : directions) {
+			int newY = y + dir[0];
+			int newX = x + dir[1];
+
+			if (newX >= 0 && newX < 8 && newY >= 0 && newY < 8) {
+				Piece target = board.get(newY).get(newX);
+				if (target == null || target.isWhite() != this.isWhite) {
+					moves.get(newY).set(newX, true);
+				}
+			}
+		}
+
+		return moves;
+	}
+}

OOP_2B1_Project/src/backend/Knight.java

@@ -0,0 +1,46 @@
+package backend;
+
+import java.util.ArrayList;
+
+public class Knight extends Piece {
+
+	public Knight(int x, int y, boolean isWhite) {
+		super(x, y, PieceType.Knight, isWhite);
+	}
+
+	@Override
+	public ArrayList<ArrayList<Boolean>> getPossibleMoves(ArrayList<ArrayList<Piece>> board) {
+		ArrayList<ArrayList<Boolean>> moves = new ArrayList<>();
+
+		// Initialize empty move grid
+		for (int i = 0; i < 8; i++) {
+			ArrayList<Boolean> row = new ArrayList<>();
+			for (int j = 0; j < 8; j++) {
+				row.add(false);
+			}
+			moves.add(row);
+		}
+
+		// L-shaped moves: (±2, ±1) and (±1, ±2)
+		int[][] deltas = {
+			{-2, -1}, {-2, 1},
+			{-1, -2}, {-1, 2},
+			{1, -2},  {1, 2},
+			{2, -1},  {2, 1}
+		};
+
+		for (int[] delta : deltas) {
+			int newY = y + delta[0];
+			int newX = x + delta[1];
+
+			if (newX >= 0 && newX < 8 && newY >= 0 && newY < 8) {
+				Piece target = board.get(newY).get(newX);
+				if (target == null || target.isWhite() != this.isWhite) {
+					moves.get(newY).set(newX, true); // Empty or opponent
+				}
+			}
+		}
+
+		return moves;
+	}
+}

OOP_2B1_Project/src/backend/Pawn.java

@@ -0,0 +1,50 @@
+package backend;
+
+import java.util.ArrayList;
+
+public class Pawn extends Piece {
+
+	public Pawn(int x, int y, boolean isWhite) {
+		super(x, y, PieceType.Pawn, isWhite);
+	}
+
+	@Override
+	public ArrayList<ArrayList<Boolean>> getPossibleMoves(ArrayList<ArrayList<Piece>> board) {
+		ArrayList<ArrayList<Boolean>> moves = new ArrayList<>();
+		for (int i = 0; i < 8; i++) {
+			ArrayList<Boolean> row = new ArrayList<>();
+			for (int j = 0; j < 8; j++) {
+				row.add(false);
+			}
+			moves.add(row);
+		}
+
+		int direction = isWhite ? -1 : 1;
+		int startRow = isWhite ? 6 : 1;
+
+		// Move forward
+		int nextY = y + direction;
+		if (nextY >= 0 && nextY < 8) {
+			moves.get(nextY).set(x, true);
+
+			// Two steps forward
+//			int doubleY = y + 2 * direction;
+//			if (y == startRow && board.get(doubleY).get(x) == null) {
+//				moves.get(doubleY).set(x, true);
+//			}
+		}
+
+		// Captures
+		for (int dx : new int[]{-1, 1}) {
+			int newX = x + dx;
+			if (newX >= 0 && newX < 8 && nextY >= 0 && nextY < 8) {
+				Piece target = board.get(nextY).get(newX);
+				if (target != null && target.isWhite() != this.isWhite) {
+					moves.get(nextY).set(newX, true);
+				}
+			}
+		}
+
+		return moves;
+	}
+}

OOP_2B1_Project/src/backend/Piece.java

@@ -1,6 +1,8 @@
 package backend;
 
-public class Piece {
+import java.util.ArrayList;
+
+public abstract class Piece {
 	public int x;
 	public int y;
 	public PieceType type;
@@ -27,6 +29,9 @@ public class Piece {
 	public boolean isWhite() {
 		return this.isWhite;
 	}
+	
+	public abstract ArrayList<ArrayList<Boolean>> getPossibleMoves(ArrayList<ArrayList<Piece>> board);
+
 	@Override
 	public String toString() {
 		return "Piece [x=" + x + ", y=" + y + ", type=" + type + ", isWhite=" + isWhite + "]";

OOP_2B1_Project/src/backend/PieceCreation.java

@@ -0,0 +1,15 @@
+package backend;
+
+public class PieceCreation {
+    public static Piece createPiece(int x, int y, PieceType type, boolean isWhite) {
+        switch (type) {
+            case Pawn: return new Pawn(x, y, isWhite);
+            case Rook: return new Rook(x, y, isWhite);
+            case Knight: return new Knight(x, y, isWhite);
+            case Bishop: return new Bishop(x, y, isWhite);
+            case Queen: return new Queen(x, y, isWhite);
+            case King: return new King(x, y, isWhite);
+            default: throw new IllegalArgumentException("Unknown piece type: " + type);
+        }
+    }
+}

OOP_2B1_Project/src/backend/PossibleMovements.java

@@ -28,19 +28,30 @@ public class PossibleMovements {
 			}
 			possibleMoves.add(row);
 		}
+		// Pawn movements for white
 		if (turnColor) {
 			if (type == PieceType.Pawn) {
-				if (x == 0) {
-					if (board.get(y).get(x+1) != null) {
-						possibleMoves.get(y).set(x+1, true);
+				if (y!= 0) {
+					if (x == 0) {
+						if (board.get(y-1).get(x+1) != null) {
+							possibleMoves.get(y-1).set(x+1, true);
+						}
+					}
+					else if (x==7) {
+						if (board.get(y-1).get(x-1) != null) {
+							possibleMoves.get(y-1).set(x-1, true);
+						}
+					}
+					else {
+						if (board.get(y-1).get(x-1) != null) {
+							possibleMoves.get(y-1).set(x-1, true);
+						}
+						if (board.get(y-1).get(x+1) != null) {
+							possibleMoves.get(y-1).set(x+1, true);
+						}
+						possibleMoves.get(y-1).set(x, true);
 					}
 				}
-				if (x==7) {
-					if (board.get(y).get(x-1) != null) {
-						possibleMoves.get(y).set(x-1, true);
-					}
-				}
-				for (int xi = 1; xi<7;i++) {
 			}
 		}
 	}

OOP_2B1_Project/src/backend/Queen.java

@@ -0,0 +1,57 @@
+package backend;
+
+import java.util.ArrayList;
+
+public class Queen extends Piece {
+
+	public Queen(int x, int y, boolean isWhite) {
+		super(x, y, PieceType.Queen, isWhite);
+	}
+
+	@Override
+	public ArrayList<ArrayList<Boolean>> getPossibleMoves(ArrayList<ArrayList<Piece>> board) {
+		ArrayList<ArrayList<Boolean>> moves = new ArrayList<>();
+
+		// Initialize 8x8 move grid with false
+		for (int i = 0; i < 8; i++) {
+			ArrayList<Boolean> row = new ArrayList<>();
+			for (int j = 0; j < 8; j++) {
+				row.add(false);
+			}
+			moves.add(row);
+		}
+
+		// Queen directions: Rook + Bishop
+		int[][] directions = {
+			{-1, 0},  // up
+			{1, 0},   // down
+			{0, -1},  // left
+			{0, 1},   // right
+			{-1, -1}, // top-left
+			{-1, 1},  // top-right
+			{1, -1},  // bottom-left
+			{1, 1}    // bottom-right
+		};
+
+		for (int[] dir : directions) {
+			int newY = y + dir[0];
+			int newX = x + dir[1];
+
+			while (newX >= 0 && newX < 8 && newY >= 0 && newY < 8) {
+				Piece target = board.get(newY).get(newX);
+				if (target == null) {
+					moves.get(newY).set(newX, true);
+				} else {
+					if (target.isWhite() != this.isWhite) {
+						moves.get(newY).set(newX, true); // Can capture
+					}
+					break; // Blocked
+				}
+				newY += dir[0];
+				newX += dir[1];
+			}
+		}
+
+		return moves;
+	}
+}

OOP_2B1_Project/src/backend/Rook.java

@@ -0,0 +1,53 @@
+package backend;
+
+import java.util.ArrayList;
+
+public class Rook extends Piece {
+
+	public Rook(int x, int y, boolean isWhite) {
+		super(x, y, PieceType.Rook, isWhite);
+	}
+
+	@Override
+	public ArrayList<ArrayList<Boolean>> getPossibleMoves(ArrayList<ArrayList<Piece>> board) {
+		ArrayList<ArrayList<Boolean>> moves = new ArrayList<>();
+
+		// Initialize empty move grid
+		for (int i = 0; i < 8; i++) {
+			ArrayList<Boolean> row = new ArrayList<>();
+			for (int j = 0; j < 8; j++) {
+				row.add(false);
+			}
+			moves.add(row);
+		}
+
+		// Directions: up, down, left, right
+		int[][] directions = {
+			{-1, 0}, // up
+			{1, 0},  // down
+			{0, -1}, // left
+			{0, 1}   // right
+		};
+
+		for (int[] dir : directions) {
+			int newY = y + dir[0];
+			int newX = x + dir[1];
+
+			while (newX >= 0 && newX < 8 && newY >= 0 && newY < 8) {
+				Piece target = board.get(newY).get(newX);
+				if (target == null) {
+					moves.get(newY).set(newX, true); // Empty square
+				} else {
+					if (target.isWhite() != this.isWhite) {
+						moves.get(newY).set(newX, true); // Capture opponent
+					}
+					break; // Stop at the first piece (can't jump)
+				}
+				newY += dir[0];
+				newX += dir[1];
+			}
+		}
+
+		return moves;
+	}
+}