void playdialoguescenesound();
int findClosestPlayer();
void Loadlevel(int which);
-void Loadlevel(const std::string& name);
+void Loadlevel(const std::string& name, bool tutorial = false);
void Tick();
void TickOnce();
void TickOnceAfter();
void SetUpLighting();
GLvoid ReSizeGLScene(float fov, float near);
-int checkcollide(XYZ startpoint, XYZ endpoint);
-int checkcollide(XYZ startpoint, XYZ endpoint, int what);
-int checkcollide(XYZ startpoint, XYZ endpoint, float minx, float miny, float minz, float maxx, float maxy, float maxz, int what);
void fireSound(int sound = fireendsound);