//	Turtle.h

#ifndef TURTLE_H
#define TURTLE_H

#include "PixelMap.h"

class Turtle
{
public:
	Turtle() :	itsPixelMap(0), itsX(0), itsY(0), itsAngle(0), itsWidth(1),
				itsHeight(1), itsColor(1) {}
	
	void Move( const int pDX, const int pDY )
	{	itsX += pDX; itsY += pDY;	}
	
	void MoveTo( const int pX, const int pY )
	{	itsX = pX; itsY = pY;	}

	void Move( const int pDist );
	
	void Dot()
	{	if (itsPixelMap) itsPixelMap->SetPixel( 
			(int)itsX, (int)itsY, itsColor );	}
	
	void Line( const int pDX, const int pDY );
	
	void LineTo( const int pX, const int pY )
	{	Line( (int)(pX-itsX), (int)(pY-itsY) );	}

	void Line( const int pDist );

	void VLine( const int pY1, const int pY2, const int pX );
	void HLine( const int pX1, const int pX2, const int pY );
	
	// attributes (OK for users to view/modify these):
	double	itsX, itsY;				// position
	double	itsAngle;				// orientation (in degrees)
	int		itsWidth, itsHeight;	// shape of its "tail" (pen)
	int		itsColor;				// color it draws in
	
	// pixel map to which this turtle is attached:
	PixelMap *itsPixelMap;
};

#endif