Modifica di update() per gestire moltiplicatore tempo

src/collections/headers/gamba.hpp

@@ -15,7 +15,7 @@ class Gamba : public CollectionInterface {
         PieceInterface* getJointPiece();
         void setDirection(Direction dir);
         bool setTransparency(float alpha) override;
-        void update(sf::Clock cl)override {};
+        void update(sf::Clock cl, float multiplier)override {};
         float getZ_Acc();
 };