graphics.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef STARTREK_GRAPHICS_H
#define STARTREK_GRAPHICS_H

#include "startrek/bitmap.h"
#include "startrek/font.h"
#include "startrek/startrek.h"
#include "startrek/sprite.h"

#include "common/ptr.h"
#include "common/rect.h"
#include "common/stream.h"

using Common::SharedPtr;
using Common::String;

namespace StarTrek {

class Font;
class StarTrekEngine;


const int SCREEN_WIDTH = 320;
const int SCREEN_HEIGHT = 200;

const int MAX_SPRITES = 32;


class Graphics {
public:
    Graphics(StarTrekEngine *vm);
    ~Graphics();

    void setBackgroundImage(Common::String imageName);
    void drawBitmapToBackground(const Common::Rect &origRect, const Common::Rect &drawRect, Bitmap *bitmap);

    void fillBackgroundRect(const Common::Rect &rect, byte color);
    byte *getBackgroundPixels();
    byte *lockScreenPixels();
    void unlockScreenPixels();

    void clearScreenAndPriBuffer();
    void loadPalette(const String &paletteFile);
    void copyRectBetweenBitmaps(Bitmap *destBitmap, int destX, int destY, Bitmap *srcBitmap, int srcX, int srcY, int width, int height);
    void fadeinScreen();
    void fadeoutScreen();
    void setPaletteFadeLevel(byte *palData, int fadeLevel);
    void incPaletteFadeLevel();
    void decPaletteFadeLevel();

    void loadPri(const Common::String &priFile);
    void clearPri();
    void setPri(byte val);
    byte getPriValue(int x, int y);

    Common::Point getMousePos();
    void setMouseBitmap(Common::String bitmapName);
    void popMouseBitmap();
    void toggleMouse(bool visible);

    void lockMousePosition(int16 x, int16 y);
    void unlockMousePosition();
    void warpMouse(int16 x, int16 y);

    void drawSprite(const Sprite &sprite, ::Graphics::Surface *surface);
    void drawSprite(const Sprite &sprite, ::Graphics::Surface *surface, const Common::Rect &rect, int rectLeft = 0, int rectTop = 0);
    void drawAllSprites(bool updateScreenFlag = true);
    void drawAllSpritesInRectToSurface(const Common::Rect &rect, ::Graphics::Surface *surface);
    void forceDrawAllSprites(bool updateScreenFlag = true);
    void updateScreen();
    Sprite *getSpriteAt(int16 x, int16 y);
    Sprite *getSpriteAt(Common::Point p) {
        return getSpriteAt(p.x, p.y);
    }

    void addSprite(Sprite *sprite);
    void delSprite(Sprite *sprite);

    // Save/load the current state of sprites. Can only push once for now.
    void pushSprites();
    void popSprites();

    byte *getFontGfx(char c);

    void copyBackgroundScreen();
    void loadEGAData(const char *egaFile);
    void drawBackgroundImage(const char *filename);

public:
    Font *_font;

private:
    StarTrekEngine *_vm;

    bool _egaMode;
    byte *_egaData;
    byte *_palData;
    byte *_lutData;
    byte _priData[SCREEN_WIDTH * SCREEN_HEIGHT / 2];

    int16 _paletteFadeLevel;

    Common::Rect _screenRect;
    Bitmap *_backgroundImage;

    Sprite *_sprites[MAX_SPRITES];
    int _numSprites;

    // Analagous to above, used when pushing/popping
    Sprite *_pushedSprites[MAX_SPRITES];
    int _pushedNumSprites;

    Common::Point _lockedMousePos;
};

} // End of namespace StarTrek

#endif