import java.util.*;

public class Game {

	public static void main(String[] args) {
		
		final double TRAVEL_SPEED = 10.0;
	
		Vector locations = new Vector();
		Random rand = new Random();
	
		// create the five locations -- we'll make them stars
		locations.add (new Location("Geminorum", 
								"sunny",
								rand.nextInt(100) + 1,
								rand.nextInt(100) + 1));
		locations.add (new Location("Ursae Majoris",
								"barren", 
								rand.nextInt(100) + 1,
								rand.nextInt(100) + 1));
		locations.add (new Location("Cygni",
								"colorful", 
								rand.nextInt(100) + 1,
								rand.nextInt(100) + 1));
		locations.add (new Location("Orionis",
								"tired", 
								rand.nextInt(100) + 1,
								rand.nextInt(100) + 1));
		locations.add (new Location("Andromedae",
								"exciting", 
								rand.nextInt(100) + 1,
								rand.nextInt(100) + 1));						
		
		// print introductory banner
		System.out.println("Welcome to CS101 Space Trader v1!");
		System.out.println();
		System.out.println("You travel at " +
			TRAVEL_SPEED + " million kilometers per second.");
		System.out.println();
		
		// set the initial location							
		Location presentLocation = (Location) locations.remove(0);
		System.out.println("You are starting at " + 
			presentLocation.getAppearance() + " " + presentLocation);
		double totalDistanceTraveled = 0.0;
		
		// now loop through the remaining locations in a random order
		while (locations.size() > 0) {
			
			// Select a random location
			int nextLocationToTravelTo = rand.nextInt(locations.size());
			Location nextLocation = 
				(Location) locations.remove(nextLocationToTravelTo);
			double distance = presentLocation.getDistance(nextLocation);
			
			// Print out that you are travelling there
			System.out.println();
			System.out.println("You will next travel to " + 
				nextLocation.getAppearance() + " " + 
				nextLocation + ".");
			System.out.println("This is a distance of " + distance + 
				" million kilometers.");
		
			// simulate the actual travel 
			// we travel TRAVEL_SPEED, and our distance is "distance"
			System.out.print("Traveling...");
			System.out.println(" Arrived safely!");

			// Update how far we have travelled, and change the location.
			totalDistanceTraveled += distance;
			presentLocation = nextLocation;
		}
		
		// trip done! Print out summary.
		System.out.println();
		System.out.println("Congratulations, Space Trader! ");
		System.out.print("You have successfully visited all 5 ");
		System.out.println("locations in our game!");
		System.out.println("You traveled " + totalDistanceTraveled + 
			" million kilometers.");
		System.out.print("Take the rest of the day off, ");
		System.out.println("Space Trader -- you deserve it!");
		System.out.println();
	}

}