allow resetting games

src/Core/Board.cpp

@@ -16,11 +16,7 @@ Board::Board(int width, int height) :
         this->emptyRow.push_back(NOTHING);
     }
     
-    // initialize grid
-    this->grid.clear();
-    for (int j = 0; j < height; j++) {
-        this->grid.push_back(this->emptyRow);
-    }
+    this->clearBoard();
 }
 
 void Board::changeBlock(const Position& position, Block block) {
@@ -76,6 +72,13 @@ int Board::clearRows() {
     return clearedLines;
 }
 
+void Board::clearBoard() {
+    this->grid.clear();
+    for (int j = 0; j < height; j++) {
+        this->grid.push_back(this->emptyRow);
+    }
+}
+
 Block Board::getBlock(const Position& position) const {
     if (position.x < 0 || position.x >= this->width || position.y < 0) return OUT_OF_BOUNDS;