Initial commit.

src/cs6601/p1/TerritoryMarker.java

@@ -0,0 +1,74 @@
+package cs6601.p1;
+
+public class TerritoryMarker {
+	public static final char BLACK_TERRITORY = 'x';
+	public static final char WHITE_TERRITORY = 'o';
+	public static final char UNOWNED_TERRITORY = '-';
+	public static final char TERRITORY_MARKER = '?';
+	
+	public static final int EMPTY = 0;
+	public static final int BLACK = 1;
+	public static final int WHITE = 2;
+	
+	public static GameBoard markTerritory(GameBoard gameBoard) {
+		for (int row = 0; row < gameBoard.getSize(); row++) {
+			for (int col = 0; col < gameBoard.getSize(); col++) {
+				char symbol = gameBoard.getSymbolAt(col,row);
+				if (symbol != '.') {
+					continue;
+				}
+				int ownedBy = findTerritory(gameBoard,col,row);
+				if (ownedBy == BLACK) {
+					gameBoard.replaceSymbol(TERRITORY_MARKER, BLACK_TERRITORY);
+				} else if (ownedBy == WHITE) {
+					gameBoard.replaceSymbol(TERRITORY_MARKER, WHITE_TERRITORY);
+				} else {
+					gameBoard.replaceSymbol(TERRITORY_MARKER, UNOWNED_TERRITORY);
+				}
+			}
+		}
+		gameBoard.setTerritoryMarked(true);
+		return gameBoard;
+	}
+	
+	public static int getStoneColor(GameBoard gameBoard, int col, int row) {
+		char symbol = gameBoard.getSymbolAt(col,row);
+		if (symbol == GameBoard.BLACK_STONE) {
+			return BLACK;
+		} else if (symbol == GameBoard.WHITE_STONE) {
+			return WHITE;
+		} else {
+			return EMPTY;
+		}
+	}
+	
+	public static int findTerritory(GameBoard gameBoard, int col, int row) {
+		char symbol = gameBoard.getSymbolAt(col,row);
+
+		if (symbol == GameBoard.BLACK_STONE) {
+			return BLACK;
+		} else if (symbol == GameBoard.WHITE_STONE) {
+			return WHITE;
+		} else if (symbol == TERRITORY_MARKER) {
+			return EMPTY;
+		}
+		
+		gameBoard.markTerritory(col,row,TERRITORY_MARKER);
+		int borderBits = EMPTY;
+		
+		if (col > 0) {
+			borderBits |= findTerritory(gameBoard,col-1,row);
+		}
+		if (col < gameBoard.getSize() - 1) {
+			borderBits |= findTerritory(gameBoard,col+1,row);
+		}
+        if (row > 0) {
+        	borderBits |= findTerritory(gameBoard,col,row-1);
+		}
+		if (row < gameBoard.getSize() - 1) {
+			borderBits |= findTerritory(gameBoard,col,row+1);
+		}
+		
+		return borderBits;
+	}
+}