LACS04_Turtle.java

//Turtle.java   MrG 2012.0604
public class Turtle
{
    private double x;
    private double y;
    private double theta;

    public Turtle(double x, double y, double theta)
    {
        this.x=x;
        this.y=y;
        this.theta=theta;
    }

    public void turnLeft(double delta)
    {
        theta+=delta;
    }

    public void goForward(double step)
    {
        double oldx=x;
        double oldy=y;
        x+=step*Math.cos(Math.toRadians(theta));
        y+=step*Math.sin(Math.toRadians(theta));
        StdDraw.line(oldx,oldy,x,y);
    }
}