extern void object::ServiceTower1()
{
	object  tower;               // info. about tower
	object  station;             // info. about station
	
	// 1) goes toward the defense tower
	tower = radar(DefenseTower); // looks for tower
	goto(tower.position);        // goes there
	
	while ( true )               // always repeats:
	{
		// 2) waits until power cell is empty
		while ( tower.energyCell.energyLevel > 0.2 )
		{
			wait(2);
		}
		grab();                  // grabs the power cell
		
		// 3) goes toward power station to recharge
		station = radar(PowerStation);
		goto(station.position);  // goes there
		while ( load.energyLevel < 1 )
		{
			wait(1);             // waits until recharged
		}
		
		// 4) goes back to defense tower
		goto(tower.position);    // goes toward tower
		drop();                  // drops the power cell
	}
}