/***************************************************************************
  field.cpp  -  description
  -------------------
begin                : Fri May 19 2000
copyright            : (C) 2000 by Roman Merzlyakov
email                : roman@sbrf.barrt.ru
copyright            : (C) 2000 by Roman Razilov
email                : Roman.Razilov@gmx.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
#include <stdlib.h>
#include "field.h"

Field::Field(QWidget* parent, const char* name)
	: QWidget( parent, name )
{
	clearField();
}

Field::~Field()
{
}

void Field::clearField()
{
	for(int y=0; y<NUMCELLSH; y++)
		for(int x=0; x<NUMCELLSW; x++)
			field[y][x].clear();
}
void Field::clearAnim()
{
	for(int y=0; y<NUMCELLSH; y++)
		for(int x=0; x<NUMCELLSW; x++)
			field[y][x].setAnim( ANIM_NO );
}
int Field::deleteAnimatedBalls()
{
	int deleted = 0;
	for(int y=0; y<NUMCELLSH; y++)
		for(int x=0; x<NUMCELLSW; x++)
		{
			if ( field[y][x].getAnim() != ANIM_NO )
			{
				deleted++;
				field[y][x].clear();
			}
		}
	return deleted;
}

bool Field::checkBounds(int x, int y)
{
	return (x>=0) && (x<NUMCELLSW) && (y>=0) && (y<NUMCELLSH);
}

void Field::putBall(int x, int y, int color)
{
	if( checkBounds(x,y) )
		field[y][x].setColor(color);
}
/*
   void Field::putBall(int x, int y, char color)
   {
   if( checkBounds(x,y) ){
   field[y][x].setColor(color);
   erase5Balls();
   repaint(FALSE);
   }
   }*/
void Field::moveBall(int xa, int ya, int xb, int yb)
{
	if( checkBounds(xa,ya) && checkBounds(xb,yb) &&
			field[yb][xb].isFree() && ( xa != xb || ya != yb) ) {
		field[yb][xb].moveBall(field[ya][xa]);
	}
}

int Field::getBall(int x, int y)
{
	if( checkBounds(x,y) )
		return field[y][x].getColor();
	else 
		return NOBALL;
}
int Field::getAnim(int x, int y)
{
	if( checkBounds(x,y) )
		return field[y][x].getAnim();
	else 
		return NOBALL;
}
void Field::setAnim(int x, int y, int anim)
{
	if( checkBounds(x,y) )
		field[y][x].setAnim( anim );
}

void Field::removeBall(int x, int y )
{
	if( checkBounds(x,y) ) field[y][x].clear();
}

int Field::freeSpace()
{
	int s = 0;
	for(int y=0; y<NUMCELLSH; y++)
		for(int x=0; x<NUMCELLSW; x++)
			if(field[y][x].isFree()) s++;
	return s;
}
void Field::saveUndo()
{
	void clearAnim();
	for(int y=0; y<NUMCELLSH; y++)
		for(int x=0; x<NUMCELLSW; x++)
			field_undo[y][x] = field[y][x];
}
void Field::restoreUndo()
{
	for(int y=0; y<NUMCELLSH; y++)
		for(int x=0; x<NUMCELLSW; x++)
			field[y][x] = field_undo[y][x];
}