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/* ScummVM - Scumm Interpreter
* Copyright (C) 2003-2004 The ScummVM project
*
* 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.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#ifndef SKYGRID_H
#define SKYGRID_H
#include "stdafx.h"
#include "common/scummsys.h"
#include "skydefs.h"
namespace Sky {
struct Compact;
class Disk;
class Grid {
public:
Grid(Disk *pDisk);
~Grid(void);
// grid.asm routines
void loadGrids(void);
void removeObjectFromWalk(Compact *cpt);
void objectToWalk(Compact *cpt);
// function.asm
// note that this routine does the same as objectToWalk, it just doesn't get
// its x, y, width parameters from cpt.
void plotGrid(uint32 x, uint32 y, uint32 width, Compact *cpt);
// same here, it's basically the same as removeObjectFromWalk
void removeGrid(uint32 x, uint32 y, uint32 width, Compact *cpt);
uint8 *giveGrid(uint32 pScreen);
private:
void objectToWalk(uint8 gridIdx, uint32 bitNum, uint32 width);
void removeObjectFromWalk(uint8 gridIdx, uint32 bitNum, uint32 width);
bool getGridValues(Compact *cpt, uint8 *resGrid, uint32 *resBitNum, uint32 *resWidth);
bool getGridValues(uint32 x, uint32 y, uint32 width, Compact *cpt, uint8 *resGrid, uint32 *resBitNum, uint32 *resWidth);
static int8 _gridConvertTable[];
uint8 *_gameGrids[TOT_NO_GRIDS];
Disk *_skyDisk;
};
} // End of namespace Sky
#endif //SKYGRID_H
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