/**
 * Run simulation of people in building using concurrency features of
 * Java.  Creates building and shoppers and starts it running.
 * @author kim
 *
 * 05/12/04
 */
public class Simulation {
	// how long it takes to get to next floor
	private static final int TRAVEL_TIME = 1000;
	// how long elevator stays on a floor
	private static final int FLOOR_TIME = 500;
	// time shopper is shopping on a floor
	private static final int BUSY_TIME = 3000;
	// number of elevators in building
	private static final int NUM_ELEVATORS = 2;
	// number of people that each elevator can hold
	private static final int ELEVATOR_CAPACITY = 2;
	// number of floors in building
	private static final int NUM_FLOORS = 3;
	
	// post:  Report all events of simulations, including length of
	//        simulation.
	public static void main(String args[]) throws InterruptedException {
		// Create building
		Building office = new Building(NUM_FLOORS, NUM_ELEVATORS, 
				ELEVATOR_CAPACITY, FLOOR_TIME, TRAVEL_TIME);
		
		// create itineraries for shoppers
		int[] p1Itinerary = { 1, 2, 0 };
		int[] p2Itinerary = { 2, 1, 0 };
		
		// create shoppers
		Person bill = new Person("bill", p1Itinerary, BUSY_TIME, 0, office);
		Person bob = new Person("bob", p2Itinerary, BUSY_TIME, 0, office);
		Person anne = new Person("anne", p1Itinerary, BUSY_TIME, 0, office);
		Person debbie = new Person("debbie", p2Itinerary, BUSY_TIME, 0, office);
		
		// start all threads running
		office.startElevators();
		bill.start();
		bob.start();
		anne.start();
		debbie.start();
		
		// Keep track of when we started
		long startTime = System.currentTimeMillis();
		
		bill.join();	// Don't continue until all threads complete
		bob.join();
		anne.join();
		debbie.join();
		office.stopElevators();
		
		// Report time that simulation ran
		long elapsedTime = System.currentTimeMillis() - startTime;
		System.out.println("Total simulation time: " + elapsedTime + " ms");
	}
}