turtle

import se.lth.cs.ptdc.window.SimpleWindow;

public class Turtle {
private int x;
private int y;
private boolean pen;
protected SimpleWindow w;
private double a;

public Turtle(SimpleWindow w, int x, int y) {
    this.x = x;
    this.y = y;
    this.w = w;
    a = Math.PI / 2;
}

public void penDown() {
    pen = true;
}

public void penUp() {
    pen = false;
}

public void forward(int n) {
    w.moveTo(x, y);
    x = x + (int) (Math.round(Math.cos(a) * n));
    y = y - (int) (Math.round(Math.sin(a) * n));
    if (pen) {
        w.lineTo(x, y);
    } else {
        w.moveTo(x, y);
    }
}

public void left(int beta) {
    a = a + Math.toRadians(beta);
}

public void jumpTo(int newX, int newY) {
    this.x = newX;
    this.y = newY;
    w.moveTo(newX, newY);
}

public void turnNorth() {
    a = Math.PI / 2;
}

public int getX() {
    return x;
}

public int getY() {
    return y;
}

public int getDirection() {
    return (int) Math.toDegrees(a);
}
}