use bitsets

src/Pieces/Piece.cpp

@@ -12,8 +12,7 @@
 Piece::Piece(Polyomino&& polyomino, Block blockType) :
     polyomino(polyomino),
     blockType(blockType),
-    rotationState(NONE),
-    positions(polyomino.getPositions()) {
+    rotationState(NONE) {
 }
 
 void Piece::rotate(Rotation rotation) {
@@ -25,7 +24,6 @@ void Piece::rotate(Rotation rotation) {
         this->polyomino.rotateCCW();
     
     this->rotationState += rotation;
-    this->positions = polyomino.getPositions();
 }
 
 void Piece::defaultRotation() {
@@ -37,11 +35,10 @@ void Piece::defaultRotation() {
         this->polyomino.rotateCW();
 
     this->rotationState = NONE;
-    this->positions = polyomino.getPositions();
 }
 
-const std::vector<Position>& Piece::getPositions() const {
-    return this->positions;
+const Polyomino& Piece::getPositions() const {
+    return this->polyomino;
 }
 
 int Piece::getLength() const {