aigo/lib/state.h

#ifndef _STATE_H_
#define _STATE_H_

#include "settings.h"
#include <SDL/SDL.h>
#include <stdint.h>

// get pixel/something in array p of size w*h 
#define PX_(p, x, y, w, h) ((p)[(x)+(y)*(w)])
// get pixel in SDL_Surface i
#define PX(i,x,y) (PX_((uint32_t*)(i)->pixels, (x), (y), (i)->w, (i)->h))
// get color components of pixel value. should probably be done in a nicer way
#define PXR(px) ((px) & 0xff)
#define PXG(px) (((px) & 0xff00) >> 8)
#define PXB(px) (((px) & 0xff0000) >> 16)
// iterate over SDL_Surface s with variables x, y
#define iter_pixels(s,x,y) for (x = 0; x < s->w; x++) for (y = 0; y < s->h; y++)


/**
 * Describes the current state of a go board.
 */
class State
{

	public:

		/**
		 * Standard constructor
		 */
		State( void ); 

		void setSize(int size) { State::size = size; }

		static State generateState( SDL_Surface *board, Settings settings);


	private:
		/*
		 * Get the image point corresponding to board position (i, j) using
		 * settings s.
		 */
		static point positionPoint(int i, int j, Settings s);

		static int size;
		type *board; // array describing the board situation

};

#endif /* ifndef _STATE_H_ */