f

chess/src/chess/Board.java

@@ -75,7 +75,7 @@ class Board {
     void displayMoves(Coord coord) {
         Piece piece = this.get(coord);
         if (piece == null) return;
-        ArrayList<Coord> moves = piece.moves(coord);
+        ArrayList<Coord> moves = piece.moves(coord, this);
         for (Coord move : moves) this.info.put(move, Info.CANMOVE);
     }
 
@@ -102,7 +102,7 @@ class Board {
     ArrayList<Coord> getMoves(Coord coord) {
         Piece piece = this.get(coord);
 
-        return piece.moves(coord);
+        return piece.moves(coord, this);
     }
 }
 

chess/src/chess/Piece.java

@@ -20,7 +20,9 @@ abstract class Piece {
     WorldImage draw() { return new EmptyImage(); };
 
     // Return list of possible move locations, centered around the given coord.
-    ArrayList<Coord> moves(Coord coord) { return new ArrayList<Coord>(); }
+    ArrayList<Coord> moves(Coord coord, Board board) {
+        return new ArrayList<Coord>();
+    }
 }
 
 class Pawn extends Piece {
@@ -32,8 +34,19 @@ class Pawn extends Piece {
         );
     }
 
-    ArrayList<Coord> moves(Coord coord) {
+    ArrayList<Coord> moves(Coord coord, Board board) {
         ArrayList<Coord> moves = new ArrayList<Coord>();
+        if (coord.rel(this.col).y == 1) {
+            moves.add(new Coord(
+                coord.x, coord.y + (this.col.equals(Col.BLACK) ? 2 : -2)
+            ));
+        }
+        if (!board
+                 .get(new Coord(
+                     coord.x + 1,
+                     coord.y + (this.col.equals(Col.BLACK) ? 1 : -1)
+                 ))
+                 .col.equals(this.col)) {}
         moves.add(
             new Coord(coord.x, coord.y + (this.col.equals(Col.BLACK) ? 1 : -1))
         );