vga13h.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/>.
 *
 */

/*
 * This code is based on original Soltys source code
 * Copyright (c) 1994-1995 Janusz B. Wisniewski and L.K. Avalon
 */

#ifndef CGE_VGA13H_H
#define CGE_VGA13H_H

#include "common/serializer.h"
#include "common/events.h"
#include "graphics/surface.h"
#include "cge/general.h"
#include "cge/bitmap.h"
#include "cge/snail.h"
#include "cge/cge.h"

namespace CGE {

#define kFadeStep        2
#define kVgaColDark      207
#define kVgaColDarkGray  225 /*219*/
#define kVgaColGray      231
#define kVgaColLightGray 237
#define kPixelTransp     0xFE
#define kNoSeq           (-1)
#define kNoPtr           ((uint8)-1)
#define kSprExt          ".SPR"
#define kPalCount        256
#define kPalSize         (kPalCount * 3)


struct Seq {
    uint8 _now;
    uint8 _next;
    int8 _dx;
    int8 _dy;
    int _dly;
};

class SprExt {
public:
    int _x0;
    int _y0;
    int _x1;
    int _y1;
    BitmapPtr _b0;
    BitmapPtr _b1;
    BitmapPtr *_shpList;
    Seq *_seq;
    char *_name;
    CommandHandler::Command *_near;
    CommandHandler::Command *_take;
    SprExt() :
        _x0(0), _y0(0),
        _x1(0), _y1(0),
        _b0(NULL), _b1(NULL),
        _shpList(NULL), _seq(NULL),
        _name(NULL), _near(NULL), _take(NULL)
    {}
};

class Sprite {
protected:
    SprExt *_ext;
public:
    int _ref;
    signed char _scene;
    struct Flags {
        bool _hide;       // general visibility switch
        bool _near;       // Near action lock
        bool _drag;       // sprite is moveable
        bool _hold;       // sprite is held with mouse
        bool _dummy;      // interrupt driven animation
        bool _slav;       // slave object
        bool _syst;       // system object
        bool _kill;       // dispose memory after remove
        bool _xlat;       // 2nd way display: xlat table
        bool _port;       // portable
        bool _kept;       // kept in pocket
        bool _east;       // talk to east (in opposite to west)
        bool _shad;       // shadow
        bool _back;       // 'send to background' request
        bool _bDel;       // delete bitmaps in ~SPRITE
        bool _tran;       // transparent (untouchable)
    } _flags;
    int _x;
    int _y;
    signed char _z;
    uint16 _w;
    uint16 _h;
    uint16 _time;
    uint8 _nearPtr;
    uint8 _takePtr;
    int _seqPtr;
    int _shpCnt;
    char _file[kMaxFile];
    Sprite *_prev;
    Sprite *_next;

    bool works(Sprite *spr);
    bool seqTest(int n);
    inline bool active() {
        return _ext != NULL;
    }

    Sprite(CGEEngine *vm, BitmapPtr *shp);
    virtual ~Sprite();
    BitmapPtr shp();
    BitmapPtr *setShapeList(BitmapPtr *shp);
    Sprite *expand();
    Sprite *contract();
    Sprite *backShow(bool fast = false);
    void setName(char *newName);
    inline char *name() {
        return (_ext) ? _ext->_name : NULL;
    }
    void gotoxy(int x, int y);
    void center();
    void show();
    void hide();
    BitmapPtr ghost();
    void show(uint16 pg);
    void makeXlat(uint8 *x);
    void killXlat();
    void step(int nr = -1);
    Seq *setSeq(Seq *seq);
    CommandHandler::Command *snList(SnList type);
    virtual void touch(uint16 mask, int x, int y);
    virtual void tick();
    void sync(Common::Serializer &s);
private:
    CGEEngine *_vm;
};

class Queue {
    Sprite *_head;
    Sprite *_tail;
public:
    Queue(bool show);
    ~Queue();

    bool _show;

    void append(Sprite *spr);
    void insert(Sprite *spr, Sprite *nxt);
    void insert(Sprite *spr);
    Sprite *remove(Sprite *spr);
    Sprite *first() {
        return _head;
    }
    Sprite *last() {
        return _tail;
    }
    Sprite *locate(int ref);
    void clear();
};

class Vga {
    CGEEngine *_vm;
    bool _setPal;
    Dac *_oldColors;
    Dac *_newColors;
    const char *_msg;
    const char *_name;

    void updateColors();
    void setColors();
    void waitVR();
    uint8 closest(Dac *pal, const uint8 colR, const uint8 colG, const uint8 colB);

public:
    uint32 _frmCnt;
    Queue *_showQ;
    Queue *_spareQ;
    int _mono;
    Graphics::Surface *_page[4];
    Dac *_sysPal;

    Vga(CGEEngine *vm);
    ~Vga();

    uint8 *glass(Dac *pal, const uint8 colR, const uint8 colG, const uint8 colB);
    void getColors(Dac *tab);
    void setColors(Dac *tab, int lum);
    void clear(uint8 color);
    void copyPage(uint16 d, uint16 s);
    void sunrise(Dac *tab);
    void sunset();
    void show();
    void update();

    void palToDac(const byte *palData, Dac *tab);
    void dacToPal(const Dac *tab, byte *palData);
};

class HorizLine: public Sprite {
    CGEEngine *_vm;
public:
    HorizLine(CGEEngine *vm);
};

class SceneLight: public Sprite {
    CGEEngine *_vm;
public:
    SceneLight(CGEEngine *vm);
};

class Speaker: public Sprite {
    CGEEngine *_vm;
public:
    Speaker(CGEEngine *vm);
};

class PocLight: public Sprite {
    CGEEngine *_vm;
public:
    PocLight(CGEEngine *vm);
};

} // End of namespace CGE

#endif