diff --git a/build/bin/mainV8.exe b/build/bin/mainV8.exe
index 205f373..2eefb28 100644
Binary files a/build/bin/mainV8.exe and b/build/bin/mainV8.exe differ
diff --git a/src/collections/headers/collection_interface.hpp b/src/collections/headers/collection_interface.hpp
index dbd7e78..d57825e 100644
--- a/src/collections/headers/collection_interface.hpp
+++ b/src/collections/headers/collection_interface.hpp
@@ -13,6 +13,7 @@ struct collection{
 class CollectionInterface{
     public:
         virtual collection create(ReferencePlane plane) = 0;
+        virtual void update() = 0;
         virtual bool setTransparency(float alpha) = 0; 
         virtual ~CollectionInterface(){};
 };
diff --git a/src/collections/headers/gamba.hpp b/src/collections/headers/gamba.hpp
index 2e7d2ad..307b217 100644
--- a/src/collections/headers/gamba.hpp
+++ b/src/collections/headers/gamba.hpp
@@ -15,6 +15,7 @@ class Gamba : public CollectionInterface {
         PieceInterface* getJointPiece();
         void setDirection(Direction dir);
         bool setTransparency(float alpha) override;
+        void update() {};
         float getZ_Acc();
 };
 
diff --git a/src/collections/headers/lower_body.hpp b/src/collections/headers/lower_body.hpp
index 82e1988..808b2e5 100644
--- a/src/collections/headers/lower_body.hpp
+++ b/src/collections/headers/lower_body.hpp
@@ -26,7 +26,7 @@ protected:
 public:
     Lower_Body(rb::Vector3 pos, std::vector<gamba_data> data);
     ~Lower_Body();
-
+    void update() override;
     void setVisibility(bool c);
     bool setTransparency(float alpha) override;
     collection create(ReferencePlane plane) override;
diff --git a/src/collections/methods/lower_body.cpp b/src/collections/methods/lower_body.cpp
index 63d76f8..9803bd1 100644
--- a/src/collections/methods/lower_body.cpp
+++ b/src/collections/methods/lower_body.cpp
@@ -72,4 +72,8 @@ bool Lower_Body::setTransparency(float alpha){
     dx->setTransparency(alpha);
     t->setTransparency(alpha);
     return true;
+}
+
+void Lower_Body::update(){
+    
 }
\ No newline at end of file
diff --git a/src/rigidbody/headers/rb.hpp b/src/rigidbody/headers/rb.hpp
index 9e7b315..3b52bea 100644
--- a/src/rigidbody/headers/rb.hpp
+++ b/src/rigidbody/headers/rb.hpp
@@ -26,7 +26,7 @@
 
                 //funzioni
                 void calcVel(const float Dtime);
-                void calcRot(const time_t Dtime);
+                void calcRot(const float Dtime);
                 void calcAcc(const Vector3 Dacc);
                 void calcTanAcc(const Vector3 Dacc);
                 void calcPos(const float Dtime);
@@ -45,6 +45,7 @@
                 void setRot(const Vector3 Nrot);
                 void setVel(const Vector3 Nacc);
                 void setAcc(const Vector3 Nvel);
+                void setTanAcc(const Vector3 Dacc, const Vector3 pos);
                 void step(const sf::Clock time);
 
                 //complesso, deve definire accelerazione e accelerazione tangenziale 
diff --git a/src/rigidbody/methods/rb_class.cpp b/src/rigidbody/methods/rb_class.cpp
index ca3093b..943f3bf 100755
--- a/src/rigidbody/methods/rb_class.cpp
+++ b/src/rigidbody/methods/rb_class.cpp
@@ -97,4 +97,11 @@ void rigidbody::step(const sf::Clock time){
     calcVel(dt);
 }
     
+void rigidbody::setTanAcc(const Vector3 Dacc, const Vector3 pos){
+    
+}
 
+
+void rigidbody::calcRot(const float Dtime){
+
+}