Fix dei warning e posizione texture

src/rigidbody/methods/rb_class.cpp

@@ -87,7 +87,7 @@ void rigidbody::calcPos(const float Dtime){
 
 void rigidbody::step(const sf::Clock time, float multiplier){
     int64_t Dtime = time.getElapsedTime().asMicroseconds();
-    if (prevT == 0) prevT >= Dtime;
+    if (prevT == 0) prevT = Dtime;
 
 
     float dt = ((float(Dtime) / 1000000.0) - (float(prevT) / 1000000.0)) * multiplier;