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sprite.h

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2004-2005 The ScummVM project
 *
 * The ReInherit Engine is (C)2000-2003 by Daniel Balsom.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $Header: /cvsroot/scummvm/scummvm/saga/sprite.h,v 1.25.2.1 2005/10/18 02:11:20 sev Exp $
 *
 */

// Sprite management module private header file

#ifndef SAGA_SPRITE_H__
#define SAGA_SPRITE_H__

namespace Saga {

#define SPRITE_ZMAX  16
#define SPRITE_ZMASK 0x0F

#define DECODE_BUF_LEN 64000

struct SpriteInfo {
      byte *decodedBuffer;
      int width;
      int height;
      int xAlign;
      int yAlign;
};

struct SpriteList {
      int spriteListResourceId;
      int spriteCount;
      SpriteInfo *infoList;

      void freeMem() {
            int i;
            for (i = 0; i < spriteCount; i++) {
                  free(infoList[i].decodedBuffer);
            }
            free(infoList);
            memset(this, 0, sizeof(*this));
      }

      SpriteList() {
            memset(this, 0, sizeof(*this));
      }
};


class Sprite {
public:
      SpriteList _mainSprites;
      SpriteList _saveReminderSprites;
      SpriteList _arrowSprites;
      SpriteList _inventorySprites;

      Sprite(SagaEngine *vm);
      ~Sprite(void);

      // draw scaled sprite using background scene mask
      void drawOccluded(Surface *ds, const Rect &clipRect, SpriteList &spriteList, int spriteNumber, const Point &screenCoord, int scale, int depth);

      // draw scaled sprite using background scene mask
      void draw(Surface *ds, const Rect &clipRect, SpriteList &spriteList, int32 spriteNumber, const Point &screenCoord, int scale);

      // main function
      void drawClip(Surface *ds, const Rect &clipRect, const Point &spritePointer, int width, int height, const byte *spriteBuffer);

      void draw(Surface *ds, const Rect &clipRect, SpriteList &spriteList, int32 spriteNumber, const Rect &screenRect, int scale);

      void loadList(int resourceId, SpriteList &spriteList); // load or append spriteList
      bool hitTest(SpriteList &spriteList, int spriteNumber, const Point &screenCoord, int scale, const Point &testPoint);
      void getScaledSpriteBuffer(SpriteList &spriteList, int spriteNumber, int scale, int &width, int &height, int &xAlign, int &yAlign, const byte *&buffer);

private:
      void decodeRLEBuffer(const byte *inputBuffer, size_t inLength, size_t outLength);
      void scaleBuffer(const byte *src, int width, int height, int scale);

      SagaEngine *_vm;
      ResourceContext *_spriteContext;
      byte *_decodeBuf;
      size_t _decodeBufLen;
};

} // End of namespace Saga

#endif

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