begin optimize Generator

src/Pieces/Piece.h

@@ -16,6 +16,7 @@ class Piece {
         Polyomino polyomino;    // a polyomino representing the piece, (0, 0) is downleft
         Block blockType;        // the block type of the piece
         Rotation rotationState; // the current rotation of the piece
+        std::vector<Position> positions; // cache positions for easier use (particularly UI)
 
     public:
         /**
@@ -36,7 +37,13 @@ class Piece {
         /**
          * @return The list of positions of the piece
          */
-        const std::set<Position>& getPositions() const;
+        const std::vector<Position>& getPositions() const;
+
+        /**
+         * @param the position of the square
+         * @return false if there is a hole
+         */
+        bool containsSquare(const Position& position) const;
 
         /**
          * @return The length of the piece