Fixing bugs, unify velocity

src/Game.h

@@ -51,7 +51,7 @@ namespace ZL {
 		void handleUp(int mx, int my);
 		void handleMotion(int mx, int my);
 
-		void extrapolateRemotePlayers(float deltaMs);
+		void extrapolateRemotePlayers();
 
 		SDL_Window* window;
 		SDL_GLContext glContext;