void _Movetype_WallFriction(entity this, vector stepnormal);
int _Movetype_FlyMove(entity this, float dt, bool applygravity, bool applystepnormal, float stepheight);
void _Movetype_CheckVelocity(entity this);
void _Movetype_WallFriction(entity this, vector stepnormal);
int _Movetype_FlyMove(entity this, float dt, bool applygravity, bool applystepnormal, float stepheight);
void _Movetype_CheckVelocity(entity this);