package Lesson4;
import kareltherobot.*;

/**
 * Francesco Di Mise
 * This is a program that uses a robot with sensors, as well as if statements and for loops to get out of a "hole"
 */
public class Lesson4Activity1 extends Robot{

    /**
     * Constructor
     * @param x
     * @param y
     * @param d
     * @param b
     */
    public Lesson4Activity1 (int x, int y, Direction d, int b) {

        super(x, y, d, b);
    }

    /**
     * Main method. Oly makes the robot and the world, then moves the robot 4 times
     * @param args
     */
    public static void main (String[] args) {
        World.setDelay(50);
        World.setVisible();
        World.readWorld("Lesson4World1.kwld");

        Lesson4Activity1 MrDaddy = new Lesson4Activity1(1,3,North, 0);

        for (int index = 0; index < 4; index++){
            MrDaddy.move();
        }
    }

    /**
     * a boolean method. Checks if the left is clear by instantaneously turning left, checking if the front is clear, then instantly turning back right
     * @return
     */
    public boolean leftIsClear(){
        int delay = World.delay();
        World.setDelay(0);
        turnLeft();
        boolean check;

        if (!frontIsClear()){
            check = false;
        } else {
            check  = true;
        }
        World.setDelay(delay);
        turnRight();
        return check;

    }

    /**
     * An override method for move. Checks the boolean method if the left is clear. If is not clear, then it wil move forward. If it is, it wil doa 180 turn
     */
    public void move(){

        if (!leftIsClear()){
            super.move();
        } else {
            for (int index = 0; index < 4; index++){
                turnLeft();
            }
        }
    }

    /**
     * Method to instantly turn right
     */
    public void turnRight(){
        int delay = World.delay();
        World.setDelay(0);
        turnLeft();
        turnLeft();
        World.setDelay(delay);
        turnLeft();
    }
}