extern void object::advChargeTowers()
{
	object tower, battery;
	object power;
	int a;
	float dist;
	errmode(0);
	if (load!=null) {
		drop();
		
	}
	dist=0;
	while (true) {
		if (energyCell.energyLevel<0.3) {
			power=radar(PowerStation);
			a=goto(power.position);
			if (a!=0) {
				message("please free way to the Power Station!");
				return;
			}
			while (energyCell.energyLevel!=1) {
				wait(1);
			}
		}
		
		tower=radar(DefenseTower,0,360,dist);
		if (tower==null) {
			dist=0;
			tower=radar(DefenseTower,0,360,dist);
		}
		
		if (tower.energyCell.energyLevel<0.3) {
			battery=radar(PowerCell,0,360);
			if (battery==null) {
				message("No batteries :-(",DisplayWarning);
				break;
			}
			goto(battery.position);
			grab();
			if (load.energyLevel!=1) {
				power=radar(PowerStation);
				a=goto(power.position);
				if (a!=0) {
					message("please free way to the Power Station!");
					return;
				}
				while (load.energyLevel!=1) {
					wait(1);
				}
			}
			goto(tower.position);
			drop(Behind);
			grab();
			turn(90);
			drop();
			turn(-90);
			grab(Behind);
			drop();
			//SwitchCell1();
			//break;
			turn(90);
			grab();
			power=radar(PowerStation);
			a=goto(power.position);
			if (a!=0) {
				message("please free way to the Power Station!");
				return;
			}
			while (load.energyLevel!=1) {
				wait(1);
			}
			goto(space(position,5,25));
			drop();
			
			
		} else {
			dist=distance(tower.position,position)+1;
			
		}
	}
	
	
}