added rook, created bishop file

Bishop.java

@@ -0,0 +1,72 @@
+import java.util.*;
+import javax.swing.ImageIcon;
+
+public class Bishop extends Piece {
+  boolean hasMoved;
+
+  public Bishop(int x, int y, String color) {
+    super(x, y, color, new ImageIcon("sprites/" + color + "/bishop.png").getImage());
+    hasMoved = false;
+  }
+
+  public ArrayList<Position> getLegalMoves(Board board) {
+    ArrayList<Position> positions = new ArrayList<Position>();
+
+    // check left
+    for (int i = pos.x - 1; i >= 0; i--) {
+      Position test = new Position(i, pos.y);
+      if (board.isOpen(test)) {
+        positions.add(test);
+        continue;
+      } else if (board.getPiece(test).colorMatches(this)) {
+        break;
+      } else {
+        positions.add(test);
+        break;
+      }
+    }
+
+    // check right
+    for (int i = pos.x + 1; i <= 7; i++) {
+      Position test = new Position(i, pos.y);
+      if (board.isOpen(test)) {
+        positions.add(test);
+        continue;
+      } else if (board.getPiece(test).colorMatches(this)) {
+        break;
+      } else {
+        positions.add(test);
+        break;
+      }
+    }
+
+    // check up
+    for (int i = pos.y + 1; i <= 7; i++) {
+      Position test = new Position(pos.x, i);
+      if (board.isOpen(test)) {
+        positions.add(test);
+        continue;
+      } else if (board.getPiece(test).colorMatches(this)) {
+        break;
+      } else {
+        positions.add(test);
+        break;
+      }
+    }
+
+    // check down
+    for (int i = pos.y - 1; i >= 0; i--) {
+      Position test = new Position(pos.x, i);
+      if (board.isOpen(test)) {
+        positions.add(test);
+        continue;
+      } else if (board.getPiece(test).colorMatches(this)) {
+        break;
+      } else {
+        positions.add(test);
+        break;
+      }
+    }
+    return positions;
+  }
+}

Board.java

@@ -6,10 +6,10 @@ public class Board {
   public Board() {
     board = new Piece[8][8];
     for (int i = 0; i <= 7; i++) {
-      board[i][2] = new Pawn(i + 1, 2, "Black");
+      board[i][1] = new Pawn(i, 1, "Black");
     }
     for (int i = 0; i <= 7; i++) {
-      board[i][7] = new Pawn(i + 1, 7, "White");
+      board[i][6] = new Pawn(i, 6, "White");
     }
   }
 

Piece.java

@@ -1,8 +1,7 @@
 import java.awt.*;
 import java.util.*;
 
-public class Piece {
-  ArrayList<Integer> legalMoves;
+public abstract class Piece {
   Position pos;
   Image sprite;
   String color;
@@ -17,10 +16,7 @@ public class Piece {
     g.drawImage(sprite, pos.x * 40, pos.y * 40, null);
   }
 
-  public ArrayList<Position> getLegalMoves(Board board) {
-    System.out.println("parent method not overriden");
-    return null;
-  }
+  public abstract ArrayList<Position> getLegalMoves(Board board);
 
   public boolean colorMatches(Piece p) {
     return this.color.equals(p.color);

Rook.java

@@ -0,0 +1,72 @@
+import java.util.*;
+import javax.swing.ImageIcon;
+
+public class Rook extends Piece {
+  boolean hasMoved;
+
+  public Rook(int x, int y, String color) {
+    super(x, y, color, new ImageIcon("sprites/" + color + "/rook.png").getImage());
+    hasMoved = false;
+  }
+
+  public ArrayList<Position> getLegalMoves(Board board) {
+    ArrayList<Position> positions = new ArrayList<Position>();
+
+    // check left
+    for (int i = pos.x - 1; i >= 0; i--) {
+      Position test = new Position(i, pos.y);
+      if (board.isOpen(test)) {
+        positions.add(test);
+        continue;
+      } else if (board.getPiece(test).colorMatches(this)) {
+        break;
+      } else {
+        positions.add(test);
+        break;
+      }
+    }
+
+    // check right
+    for (int i = pos.x + 1; i <= 7; i++) {
+      Position test = new Position(i, pos.y);
+      if (board.isOpen(test)) {
+        positions.add(test);
+        continue;
+      } else if (board.getPiece(test).colorMatches(this)) {
+        break;
+      } else {
+        positions.add(test);
+        break;
+      }
+    }
+
+    // check up
+    for (int i = pos.y + 1; i <= 7; i++) {
+      Position test = new Position(pos.x, i);
+      if (board.isOpen(test)) {
+        positions.add(test);
+        continue;
+      } else if (board.getPiece(test).colorMatches(this)) {
+        break;
+      } else {
+        positions.add(test);
+        break;
+      }
+    }
+
+    // check down
+    for (int i = pos.y - 1; i >= 0; i--) {
+      Position test = new Position(pos.x, i);
+      if (board.isOpen(test)) {
+        positions.add(test);
+        continue;
+      } else if (board.getPiece(test).colorMatches(this)) {
+        break;
+      } else {
+        positions.add(test);
+        break;
+      }
+    }
+    return positions;
+  }
+}