allow resetting games

src/Core/GameBoard.cpp

@@ -16,10 +16,25 @@ GameBoard::GameBoard(int boardWidth, int boardHeight, const std::shared_ptr<Piec
     generator(pieceList),
     nextQueueLength(nextQueueLength) {
         
+    this->initialize();
+}
+
+void GameBoard::reset() {
+    this->board.clearBoard();
+    this->generator.jumpToNextBag();
+
+    this->initialize();
+}
+
+void GameBoard::initialize() {
     this->nextQueue.clear();
     for (int i = 0; i < nextQueueLength; i++) {
         this->nextQueue.push_back(this->generator.getNext());
     }
+
+    this->activePiece = nullptr;
+    this->heldPiece = nullptr;
+    this->isLastMoveKick = false;
 }
 
 bool GameBoard::moveLeft() {