script.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 GROOVIE_SCRIPT_H
#define GROOVIE_SCRIPT_H

#include "groovie/groovie.h"
#ifdef ENABLE_GROOVIE2
#include "groovie/logic/beehive.h"
#include "groovie/logic/cake.h"
#include "groovie/logic/gallery.h"
#include "groovie/logic/mousetrap.h"
#include "groovie/logic/othello.h"
#include "groovie/logic/pente.h"
#include "groovie/logic/triangle.h"
#include "groovie/logic/winerack.h"
#endif

#include "common/random.h"
#include "common/rect.h"

namespace Common {
class SeekableReadStream;
}

namespace Graphics {
struct Surface;
}

namespace Groovie {

class CellGame;
class Debugger;
class GroovieEngine;
class TlcGame;

class Script {
    friend class Debugger;

public:
    Script(GroovieEngine *vm, EngineVersion version);
    ~Script();

    void setDebugger(Debugger *debugger);
    void setVariable(uint16 varnum, byte value);

    void timerTick();

    bool loadScript(Common::String scriptfile);
    void directGameLoad(int slot);
    void directGameSave(int slot, const Common::String &desc);
    bool canDirectSave() const;
    void step();

    void setMouseClick(uint8 button);
    void setKbdChar(uint8 c);
    void setAction(uint8 a);

    void setBitFlag(int bitnum, bool value);
    bool getBitFlag(int bitnum);

    Common::String &getContext();

private:
    GroovieEngine *_vm;

    Common::RandomSource _random;

    bool _firstbit;
    uint8 _lastCursor;

    EngineVersion _version;

    // Script filename (for debugging purposes)
    Common::String _scriptFile;
    Common::String _savedScriptFile;

    // Save names
    Common::String _saveNames[MAX_SAVES];
    bool _wantAutosave;

    // Code
    byte *_code;
    uint16 _codeSize;
    uint16 _currentInstruction;
    byte *_savedCode;
    uint16 _savedCodeSize;
    uint16 _savedInstruction;

    // Variables
    byte _variables[0x400];
    byte _savedVariables[0x180];

    // Stack
    uint16 _stack[0x20];
    uint8 _stacktop;
    uint8 _savedStacktop;

    // Input
    bool _mouseClicked;
    uint8 _eventMouseClicked;
    uint8 _kbdChar;
    uint8 _eventKbdChar;
    uint8 _eventAction;
    uint16 _inputLoopAddress;
    uint8 _newCursorStyle;
    uint16 _hotspotTopAction;
    uint16 _hotspotTopCursor;
    uint16 _hotspotBottomAction;
    uint16 _hotspotBottomCursor;
    uint16 _hotspotRightAction;
    uint16 _hotspotLeftAction;
    uint16 _hotspotSlot;
    bool _fastForwarding;
    void resetFastForward();

    // Video
    Common::SeekableReadStream *_videoFile;
    uint32 _videoRef;
    uint16 _bitflags;
    uint16 _videoSkipAddress;

    // Debugging
    Debugger *_debugger;
    Common::String _debugString;
    uint16 _oldInstruction;

    // Special classes depending on played game
    CellGame *_cellGame;
    TlcGame *_tlcGame;

    // Helper functions
    uint8 getCodeByte(uint16 address);
    uint8 readScript8bits();
    uint16 readScript16bits();
    uint32 readScript32bits();
    uint16 readScript8or16bits();
    uint8 readScriptChar(bool allow7C, bool limitVal, bool limitVar);
    void readScriptString(Common::String &str);
    uint8 readScriptVar();
    uint32 getVideoRefString(Common::String &resName);

    void executeInputAction(uint16 address);
    bool hotspot(Common::Rect rect, uint16 addr, uint8 cursor);

    void loadgame(uint slot);
    bool preview_loadgame(uint slot);
    void savegame(uint slot, const Common::String &name);
    bool playvideofromref(uint32 fileref, bool loopUntilAudioDone = false);
    bool playBackgroundSound(uint32 fileref, uint32 loops);
    void printString(Graphics::Surface *surface, const char *str);

    // Opcodes
    typedef void (Script::*OpcodeFunc)();
    OpcodeFunc *_opcodes;
    static OpcodeFunc _opcodesT7G[];
    static OpcodeFunc _opcodesV2[];

    void o_invalid();

    void o_nop();
    void o_nop8();
    void o_nop16();
    void o_nop32();
    void o_nop8or16();

    void o_playsong();
    void o_bf9on();
    void o_palfadeout();
    void o_bf8on();
    void o_bf6on();
    void o_bf7on();
    void o_setbackgroundsong();
    void o_videofromref();
    void o_bf5on();
    void o_inputloopstart();
    void o_keyboardaction();
    void o_hotspot_rect();
    void o_hotspot_left();
    void o_hotspot_right();
    void o_hotspot_center();
    void o_hotspot_current();
    void o_inputloopend();
    void o_random();
    void o_jmp();
    void o_loadstring();
    void o_ret();
    void o_call();
    void o_sleep();
    void o_strcmpnejmp_var();
    void o_copybgtofg();
    void o_strcmpnejmp();
    void o_xor_obfuscate();
    void o_vdxtransition();
    void o_swap();
    void o_inc();
    void o_dec();
    void o_strcmpeqjmp();
    void o_mov();
    void o_add();
    void o_videofromstring1();
    void o_videofromstring2();
    void o_stopmidi();
    void o_endscript();
    void o_sethotspottop();
    void o_sethotspotbottom();
    void o_loadgame();
    void o_savegame();
    void o_hotspotbottom_4();
    void o_midivolume();
    void o_jne();
    void o_loadstringvar();
    void o_chargreatjmp();
    void o_bf7off();
    void o_charlessjmp();
    void o_copyrecttobg();
    void o_restorestkpnt();
    void o_obscureswap();
    void o_printstring();
    void o_hotspot_slot();
    void o_checkvalidsaves();
    void o_resetvars();
    void o_mod();
    void o_loadscript();
    void o_setvideoorigin();
    void o_sub();
    void o_returnscript();
    void o_sethotspotright();
    void o_sethotspotleft();
    void o_getcd();
    void o_playcd();
    void o_musicdelay();
    void o_hotspot_outrect();
    void o_stub56();
    void o_wipemaskfromstring58();
    void o_stub59();

    void o2_bf0on();
    void o2_copybgtofg();
    void o2_printstring();
    void o2_playsong();
    void o2_midicontrol();
    void o2_setbackgroundsong();
    void o2_videofromref();
    void o2_vdxtransition();
    void o2_setvideoskip();
    void o2_savescreen();
    void o2_restorescreen();
    void o_gamelogic();
    void o2_copyfgtobg();
    void o2_setscriptend();
    void o2_playsound();
    void o2_check_sounds_overlays();
    void o2_preview_loadgame();

#ifdef ENABLE_GROOVIE2
    BeehiveGame _beehive;
    CakeGame _cake;
    GalleryGame _gallery;
    MouseTrapGame _mouseTrap;
    OthelloGame _othello;
    PenteGame _pente;
    TriangleGame _triangle;
    WineRackGame _wineRack;
#endif
};

} // End of Groovie namespace

#endif // GROOVIE_SCRIPT_H