96 /** Function to tell if a vehicle needs to be autorenewed

    97  * @param *p The vehicle owner

    98  * @return true if the vehicle is old enough for replacement

    99  */

   100 bool Vehicle::NeedsAutorenewing(const Player *p) const

   101 {

   102 	/* We can always generate the Player pointer when we have the vehicle.

   103 	 * However this takes time and since the Player pointer is often present

   104 	 * when this function is called then it's faster to pass the pointer as an

   105 	 * argument rather than finding it again. */

   106 	assert(p == GetPlayer(this->owner));

   107 

   108 	if (!p->engine_renew) return false;

   109 	if (this->age - this->max_age < (p->engine_renew_months * 30)) return false;

   110 

   111 	return true;

   112 }

   113