import becker.robots.*;

public class TravelBot extends Robot
{
	private final int FUEL_TANK_CAPACITY = 10;
	private int distanceTraveled;
	private int fuel;
	
	//constructors
	
	public TravelBot(City c, int st, int ave, Direction d)
	{
		super(c,st,ave,d);
		
		this.fuel = FUEL_TANK_CAPACITY;
		this.distanceTraveled=0;
	}
	
	public TravelBot(City c, int st, int ave, Direction d, int startingFuel, int distanceTraveled)
	{
		super(c,st,ave,d);
		
		this.setFuel(startingFuel);
		this.distanceTraveled=distanceTraveled;
	}
	
	//mutators
	
	public void setDistanceTraveled(int newDistanceTraveled)
	{
		this.distanceTraveled=newDistanceTraveled;
	}
	
	public void setFuel(int newFuel)
	{
		if(fuel>=0 && fuel<=FUEL_TANK_CAPACITY)  //not required, but a nice feature of the mutator
			this.fuel=newFuel;
	}
	
	//accessors
	
	public int getDistanceTraveled()
	{
		return distanceTraveled;
	}
	
	public int getFuel()
	{
		return fuel;
	}
	
	//makes the robot move forward "distance", refueling at fuel stations and blowing up when it runs out of fuel
	public void travel(int distance)
	{
		for(int movesMade=0; movesMade<distance; movesMade++)
		{
			if(fuel==0)  //out of fuel
			{
				//explode
				
				breakRobot("BOOM!");  //this method (breakRobot) causes the method it's in (travel) to stop executing
			}
			else  //still have enough fuel
			{
				move();
				distanceTraveled++;
				
				if(canPickThing())  //we're at a fuel station
					fuel=FUEL_TANK_CAPACITY;
				else
					fuel--;  //we used some fuel on our move forward
			}			
		}
	}  //travel
	
	//driver
	//this could (and probably should) be in a different class, but cheating for ease of reading
	public static void main(String[] args)
	{
		City c = new City();
		new Thing(c, 5, 5);
		
		TravelBot travis = new TravelBot(c, 5, 0, Direction.EAST);
		//or:
		//TravelBot travis = new TravelBot(c,0,5,Direction.EAST,5,0)
		
		travis.travel(11);
		System.out.println("Travis' current fuel: " + travis.getFuel() + ". Travis' current mileage: " + travis.getDistanceTraveled());
		
		travis.travel(2);
		System.out.println("Travis' current fuel: " + travis.getFuel() + ". Travis' current mileage: " + travis.getDistanceTraveled());
		
		travis.travel(3);
	}
}  //TravelBot