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

 * @param *p The vehicle owner

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

 */

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

{

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

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

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

	 * argument rather than finding it again. */

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

	if (!p->engine_renew) return false;

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

	return true;

}