add param to Room.contains() for border around room

src/include/room.h

@@ -21,7 +21,7 @@ class Room {
 		bool exists();
 		bool touches(Coord);
 		void printInfo(int);
-		bool contains(Coord&);
+		bool contains(Coord&, int border=0);
 	private:
 		Coord topLeft;
 		Coord bottomRight;

src/room.cpp

@@ -77,7 +77,7 @@ void Room::dig(Level& level) {
 	}
 }
 
-bool Room::contains(Coord& coord) {
-	return (topLeft[0] <= coord[0]) && (coord[0] <= bottomRight[0])
-		&& (topLeft[1] <= coord[1]) && (coord[1] <= bottomRight[1]);
+bool Room::contains(Coord& coord, int border) {
+	return (topLeft[0]-border <= coord[0]) && (coord[0] <= bottomRight[0]+border)
+	&& (topLeft[1]-border <= coord[1]) && (coord[1] <= bottomRight[1]+border);
 }