/Users/paul/Documents/phlogo/core/Turtle.h

/*
 *  Turtle.h
 *
 *  Author: Paul Hamilton
 *      Date: 7 Aug 2011
 *
 */
#ifndef _TURTLE_H
#define _TURTLE_H

#include <string>
#include <sstream>

namespace phlogo {

class Turtle {
        
public:
    
    // graphics
    virtual void clear() = 0;
    virtual void moveTo(int x, int y) = 0;
    virtual void lineTo(int x, int y) = 0;
    virtual void stroke() = 0;
    
    // cursor details
    void home();
    double getX() { return _x; }
    double getY() { return _y; }
    void setXY(double x, double y) { _x = x; _y = y; }
    double getHeading() { return _heading; }
    void setHeading(double heading) { _heading = heading; }
    void setPendown(bool pendown) { _pendown = pendown; }
    bool getPendown() { return _pendown; }
    
protected:
    friend class World;
    bool _firstop;
    bool _pendown;
    double _x;
    double _y;
    double _heading;
};

class JSONTurtle : public Turtle {
 
public:
    JSONTurtle();
    
    // Turtle overrides
    virtual void clear();
    virtual void moveTo(int x, int y);
    virtual void lineTo(int x, int y);
    virtual void stroke();

    void startGData();
    std::string endGData();
    
private:
    std::stringstream _gdata;
};
    
}

#endif // _TURTLE_H