commit files uebung02

uebung02/chess/Board.java

@@ -0,0 +1,52 @@
+import java.io.PrintStream;
+import java.util.ArrayList;
+
+class Board {
+    ArrayList<Piece> Pieces;
+
+    Board() {
+        this.Pieces = new ArrayList<Piece>();
+    }
+
+    void add(Piece piece) {
+        if (piece.board != this)
+            throw new IllegalArgumentException("wrong board");
+        if (piece.board.pieceAt(piece.row, piece.col) != null)
+            throw new IllegalArgumentException("field is occupied");
+        Pieces.add(piece);
+    }
+
+    void printBoard(PrintStream out) {
+        out.println("    1   2   3   4   5   6   7   8");
+        out.println("  +---+---+---+---+---+---+---+---+");
+        for (int Row = 1; Row <= 8; Row++) {
+            out.print("" + Row + " ");
+            for (int Col = 1; Col <= 8; Col++) {
+                final Piece p = pieceAt(Row, Col);
+                final char c = p == null ? ' ' : p.charRep();
+                out.print("| " + c + " ");
+            }
+            out.println("|");
+            out.println("  +---+---+---+---+---+---+---+---+");
+        }
+    }
+
+    Piece pieceAt(int col, int row) {
+        for (Piece p : Pieces)
+            if (p.row == row && p.col == col)
+                return p;
+        return null;
+    }
+
+    void check(PrintStream out) {
+        for (Piece P1 : Pieces) {
+            out.println(P1.showPiece());
+            for (Piece P2 : Pieces)
+                if (P1 != P2)
+                    if (P1.canCapture(P2))
+                        out.println("   can capture " + P2.showPiece());
+                    else
+                        out.println("   cannot capture " + P2.showPiece());
+        }
+    }
+}