/*
 * Lab 05.
 *
 * Created on 22 March 2007, 11:54
 * Modified on 5 April 2011
 *
 * @author Chuong Cong Vo
 * vocongchuong@yahoo.com
 */

import java.util.Random;
agent VacuumAgent extends Agent implements GenericVacuum{
	#handles event VacuumEvent;
	#uses plan VacuumPlan;
	#posts event VacuumEvent ev;
	
       private static final byte NORTH = 0, EAST = 1, SOUTH = 2, WEST = 3;
	private int x;
	private int y;
	private int direction;
	
	private boolean[][] room;

	public VacuumAgent(String name, boolean[][] _room){
		super(name);
	       this.room = _room;
       	displayRoom();
	       this.x = this.y = 0; //set the initial possition for the Vacuum
       	this.direction = EAST;  //set the initial direction for the Vacuum
	}
	
	private void displayRoom() {
		for (byte i = 0; i < 3; i++) {
			for (byte j = 0; j < 3; j++) {
				if (isDirt(i, j)) {
					System.out.print("(" + i + "," + j + ") D)   "); // "D" means dirt
				} else {
					System.out.print("(" + i + "," + j + ") _)   "); // "_" means no dirt
				}
			}
			System.out.println();
		}
	}

	public void startAgent(){// this inherited method will be called automatically once an instance of this agent is created. So, you don't need to explicitly call this method
		System.out.println("The agent starts...");
		super.startAgent();
		postEvent(ev.nextEvent());
	}
	
	public boolean isIn(int _x, int _y){
		return (this.x == _x && this.y == _y);
	}
	
	public boolean isFacing(int d){
		return (this.direction == d);
	}
	
	public boolean isDirt(int _x, int _y){
		return this.room[_x][_y];
	}
	
	public void doTurn(){
		this.direction = (this.direction + 1) % 4; //modulo
		System.out.println("Turn");
	}
	
	public void doForward(){
        if (this.isFacing(NORTH)) {
            this.x--;
        } else if (this.isFacing(EAST)) {
            this.y++;
        } else if (this.isFacing(SOUTH)) {
            this.x++;
        } else { // that is, facing WEST
            this.y--;
        }
		System.out.println("Forward To(" + this.x + "," + this.y + ")");
	}
	
	public void doSuck(){
		room[this.x][this.y] = false;
		System.out.println("Suck(" + this.x + "," + this.y + ")");
	}
	
	public int getX(){
		return this.x;
	}
	
	public int getY(){
		return this.y;
	}
	
	public int getDirection(){
		return this.direction;
	}
	
	public void die(){
		System.out.print("The agent is going to die... ");
		this.finish(); // the "finish" method is from the Agent super class
		System.out.println("The agent died");
		System.exit(0);
	}

	public static void main(String[] args){
       	boolean[][] room = new boolean[3][3]; // true = dirt; false = no dirt
	        // generating the room with some dirt
       	for (byte i = 0; i < 3; i++) {
       		for (byte j = 0; j < 3; j++) {
                		room[i][j] = new Random().nextBoolean(); // random dirt in a cell
            		}
        	}
		VacuumAgent vacuumAgent = new VacuumAgent("My Vacuum Agent", room);
	}
}