drascula.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 DRASCULA_DRASCULA_H
#define DRASCULA_DRASCULA_H

#include "common/scummsys.h"
#include "common/archive.h"
#include "common/endian.h"
#include "common/events.h"
#include "common/file.h"
#include "common/hash-str.h"
#include "common/keyboard.h"
#include "common/ptr.h"
#include "common/random.h"
#include "common/savefile.h"
#include "common/system.h"
#include "common/util.h"

#include "engines/savestate.h"

#include "drascula/console.h"
#include "drascula/detection.h"

#include "audio/mixer.h"

#include "engines/engine.h"

namespace Drascula {

#define DRASCULA_DAT_VER 6
#define DATAALIGNMENT 4

enum Languages {
    kEnglish = 0,
    kSpanish = 1,
    kGerman = 2,
    kFrench = 3,
    kItalian = 4,
    kRussian = 5
};

enum Verbs {
    kVerbDefault = -1,
    kVerbNone = 0,
    kVerbLook = 1,
    kVerbPick = 2,
    kVerbOpen = 3,
    kVerbClose = 4,
    kVerbTalk = 5,
    kVerbMove = 6
};

// Items up to chapter 3
enum InventoryItems {
    kItemMoney = 7,
    kItemLeaves = 8,
    kItemCross = 9,
    kItemSpike = 10,
    kItemEarplugs = 11,
    kItemBook = 12,
    kItemBubbleGum = 13,
    kItemSickle = 14,
    kItemTissues = 15,
    kItemCigarettes = 16,
    kItemCandle = 17,
    kItemTwoCoins = 18,
    kItemOneCoin = 19,
    kItemReefer = 20,
    kItemKey = 21,
    kItemHandbag = 22,
    kItemEarWithEarPlug = 23,
    kItemPhone = 28
};

// Items from chapter 4 onwards
enum InventoryItems2 {
    kItemKey2 = 7,
    kItemCross2 = 9,
    kItemRope2 = 19,
    kItemReefer2 = 20,
    kItemOneCoin2 = 22,
    kItemPhone2 = 28
};

enum Colors {
    kColorBrown = 1,
    kColorDarkBlue = 2,
    kColorLightGreen = 3,
    kColorDarkGreen = 4,
    kColorYellow = 5,
    kColorOrange = 6,
    kColorRed = 7,
    kColorMaroon = 8,
    kColorPurple = 9,
    kColorWhite = 10,
    kColorPink = 11
};

enum SSNFrames {
    kFrameInit = 0,
    kFrameCmpRle = 1,
    kFrameCmpOff = 2,
    kFrameEndAnim = 3,
    kFrameSetPal = 4,
    kFrameMouseKey = 5,     // unused
    kFrameEmptyFrame = 6
};

enum IgorTalkerTypes {
    kIgorDch = 0,
    kIgorFront = 1,
    kIgorDoor = 2,
    kIgorSeated = 3,
    kIgorWig = 4
};

enum VonBraunTalkerTypes {
    kVonBraunNormal = 0,
    kVonBraunDoor = 1
};

enum AnimFrameTypes {
    kFrameBlind = 0,
    kFrameSnore = 1,
    kFrameBat = 2,
    kFrameVonBraun = 3,
    kFramePianist = 4,
    kFrameDrunk = 5,
    kFrameCandles = 6,
    kFramePendulum = 7
};

enum DialogOptionStatus {
    kDialogOptionUnselected = 1,
    kDialogOptionSelected = 2,
    kDialogOptionClicked = 3
};

enum TalkSequenceCommands {
    kPause = 0,
    kSetFlag = 1,
    kClearFlag = 2,
    kPickObject = 3,
    kAddObject = 4,
    kBreakOut = 5,
    kConverse = 6,
    kPlaceVB = 7,
    kUpdateRoom = 8,
    kUpdateScreen = 9,
    kTrackProtagonist = 10,
    kPlaySound = 11,
    kFinishSound = 12,
    kTalkerGeneral = 13,
    kTalkerDrunk = 14,
    kTalkerPianist = 15,
    kTalkerBJ = 16,
    kTalkerVBNormal = 17,
    kTalkerVBDoor = 18,
    kTalkerIgorSeated = 19,
    kTalkerWerewolf = 20,
    kTalkerMus = 21,
    kTalkerDrascula = 22,
    kTalkerBartender0 = 23,
    kTalkerBartender1 = 24
};

enum CharacterDirections {
    kDirectionUp = 0,
    kDirectionDown = 1,
    kDirectionLeft = 2,
    kDirectionRight = 3
};

enum MouseCursors {
    kCursorCrosshair = 0,
    kCursorCurrentItem = 1
};

enum DoorActions {
    kCloseDoor = 0,
    kOpenDoor = 1
};

struct TalkSequenceCommand {
    int chapter;
    int sequence;
    int commandType;
    int action;
};

#define TEXTD_START 68

struct DrasculaGameDescription;

struct RoomTalkAction {
    int room;
    int chapter;
    int action;
    int objectID;
    int speechID;
};

struct RoomUpdate {
    int roomNum;
    int flag;
    int flagValue;
    int sourceX;
    int sourceY;
    int destX;
    int destY;
    int width;
    int height;
    int type;   // 0 - background, 1 - rect
};

struct ItemLocation {
    int x;
    int y;
};

struct CharInfo {
    byte inChar;
    uint16 mappedChar;
    byte charType;  // 0 - letters, 1 - signs, 2 - accented
};

class ArchiveMan : public Common::SearchSet {
public:
    ArchiveMan();

    void enableFallback(bool val) { _fallBack = val; }

    void registerArchive(const Common::Path &filename, int priority);

    Common::SeekableReadStream *open(const Common::Path &filename);

private:
    bool _fallBack;
};

class TextResourceParser {
    Common::DisposablePtr<Common::SeekableReadStream> _stream;
    int _maxLen;

    void getLine(char *buf);

public:
    TextResourceParser(Common::SeekableReadStream *stream, DisposeAfterUse::Flag dispose);

    void parseInt(int &result);
    void parseString(char *result);
};


#define NUM_SAVES       10
#define NUM_FLAGS       50
#define DIF_MASK        55
#define OBJWIDTH        40
#define OBJHEIGHT       25

#define DIF_MASK_HARE   72
#define DIF_MASK_ABC    22
#define CHAR_WIDTH      8
#define CHAR_HEIGHT     6

#define TALK_HEIGHT     25
#define TALK_WIDTH      23
#define STEP_X          8
#define STEP_Y          3
#define CHARACTER_HEIGHT    70
#define CHARACTER_WIDTH     43
#define FEET_HEIGHT     12

#define CHAR_WIDTH_OPC  6
#define CHAR_HEIGHT_OPC 5
#define NO_DOOR         99

#define COMPLETE_PAL    256
#define HALF_PAL        128

#define KEYBUFSIZE      16

static const int interf_x[] = { 1, 65, 129, 193, 1, 65, 129 };
static const int interf_y[] = { 51, 51, 51, 51, 83, 83, 83 };

struct RoomHandlers;

class DrasculaEngine : public Engine {
protected:
    // Engine APIs
    Common::Error run() override;

public:
    DrasculaEngine(OSystem *syst, const DrasculaGameDescription *gameDesc);
    ~DrasculaEngine() override;
    bool hasFeature(EngineFeature f) const override;

    void syncSoundSettings() override;

    Common::Error loadGameState(int slot) override;
    bool canLoadGameStateCurrently(Common::U32String *msg = nullptr) override;
    Common::Error saveGameState(int slot, const Common::String &desc, bool isAutosave = false) override;
    bool canSaveGameStateCurrently(Common::U32String *msg = nullptr) override;

    Common::RandomSource *_rnd;
    const DrasculaGameDescription *_gameDescription;
    uint32 getFeatures() const;
    Common::Language getLanguage() const;
    void updateEvents();

    void loadArchives();

    Audio::SoundHandle _soundHandle;

    void allocMemory();
    void freeMemory();
    void endChapter();

    void loadPic(int roomNum, byte *targetSurface, int colorCount = 1) {
        char rm[20];
        Common::sprintf_s(rm, "%i.alg", roomNum);
        loadPic(rm, targetSurface, colorCount);
    }

    void loadPic(const char *NamePcc, byte *targetSurface, int colorCount = 1);

    typedef signed char DacPalette256[256][3];

    void setRGB(byte *pal, int plt);
    void assignPalette(DacPalette256 pal);
    void setDefaultPalette(DacPalette256 pal);
    void setPalette(byte *PalBuf);
    void copyBackground(int xorg, int yorg, int xdes, int ydes, int width,
                int height, byte *src, byte *dest);

    void copyBackground() {
        copyBackground(0, 0, 0, 0, 320, 200, bgSurface, screenSurface);
    }

    void copyRect(int xorg, int yorg, int xdes, int ydes, int width,
                int height, byte *src, byte *dest);
    void updateScreen() {
        updateScreen(0, 0, 0, 0, 320, 200, screenSurface);
    }
    void updateScreen(int xorg, int yorg, int xdes, int ydes, int width, int height, byte *buffer);
    int checkWrapX(int x) {
        if (x < 0) x += 320;
        if (x > 319) x -= 320;
        return x;
    }
    int checkWrapY(int y) {
        if (y < 0) y += 200;
        if (y > 199) y -= 200;
        return y;
    }

    DacPalette256 gamePalette;
    DacPalette256 defaultPalette;
    DacPalette256 brightPalette;
    DacPalette256 darkPalette;

    byte *crosshairCursor;
    byte *mouseCursor;

    // Graphics buffers/pointers
    byte *bgSurface;
    byte *backSurface;
    byte *cursorSurface;
    byte *drawSurface3;
    byte *drawSurface2;
    byte *tableSurface;
    byte *extraSurface; // not sure about this one, was "dir_hare_dch"
    byte *screenSurface;
    byte *frontSurface;

    byte cPal[768];

    ArchiveMan _archives;

    int actorFrames[8];

    int previousMusic, roomMusic;
    int _roomNumber;
    char roomDisk[20];
    char currentData[20];
    int numRoomObjs;
    char menuBackground[20];

    char objName[30][20];
    char iconName[44][13];

    int objectNum[40], visible[40], isDoor[40];
    int trackObj[40];
    Common::Point _roomObject[40];
    int inventoryObjects[43];
    int _doorDestRoom[40];
    Common::Point _doorDestPoint[40];
    int trackCharacter_alkeva[40], _roomExitId[40];
    Common::Rect _objectRect[40];
    int takeObject, pickedObject;
    bool _subtitlesDisabled;
    bool _menuBar, _menuScreen, _hasName;
    char textName[20];
    int curExcuseLook;
    int curExcuseAction;

    int flags[NUM_FLAGS];

    int frame_y;
    int curX, curY, curDirection, trackProtagonist, _characterFrame;
    bool _characterMoved, _characterVisible;
    int roomX, roomY, checkFlags;
    int doBreak;
    int stepX, stepY;
    int curHeight, curWidth, feetHeight;
    Common::Rect _walkRect;
    int lowerLimit, upperLimit;
    int trackFinal;
    bool _walkToObject;
    int objExit;
    int _startTime;
    int hasAnswer;
    int savedTime;
    int breakOut;
    int vonBraunX, trackVonBraun, vonBraunHasMoved;
    float newHeight, newWidth;
    int factor_red[202];
    int color_solo;
    int blinking;
    int igorX, igorY, trackIgor;
    int drasculaX, drasculaY, trackDrascula;
    int term_int;
    int currentChapter;
    bool _loadedDifferentChapter;
    int _currentSaveSlot;
    bool _canSaveLoad;
    int _color;
    int musicStopped;
    int _mouseX, _mouseY, _leftMouseButton, _rightMouseButton;
    bool _leftMouseButtonHeld;

    Common::KeyState _keyBuffer[KEYBUFSIZE];
    int _keyBufferHead;
    int _keyBufferTail;

    bool loadDrasculaDat();

    bool runCurrentChapter();
    void black();
    void pickObject(int);
    void walkUp();
    void walkDown();
    void moveVonBraun();
    void placeVonBraun(int pointX);
    void hipo_sin_nadie(int counter);
    void toggleDoor(int nflag, int doorNum, int action);
    void showMap();

    void enterRoom(int);
    void clearRoom();
    void walkToPoint(Common::Point pos);
    void moveCursor();
    void checkObjects();
    void selectVerbFromBar();
    bool verify1();
    bool verify2();
    Common::KeyCode getScan();
    void addKeyToBuffer(Common::KeyState& key);
    void flushKeyBuffer();
    void selectVerb(int);
    int updateVolume(int prevVolume, int prevVolumeY);
    void volumeControls();

    bool saveLoadScreen();
    bool scummVMSaveLoadDialog(bool isSave);
    Common::String enterName(Common::String &selectedName);
    void loadSaveNames();
    void saveGame(int slot, const Common::String &desc);
    bool loadGame(int slot);
    void checkForOldSaveGames();
    void convertSaveGame(int slot, const Common::String &desc);

    void print_abc(const char *, int, int);
    void delay(int ms);
    bool confirmExit();
    void screenSaver();
    void chooseObject(int object);
    void addObject(int);
    int removeObject(int osj);
    void playFLI(const char *filefli, int vel);
    void fadeFromBlack(int fadeSpeed);
    void fadeToBlack(int fadeSpeed);
    signed char adjustToVGA(signed char value);
    void color_abc(int cl);
    bool textFitsCentered(char *text, int x);
    void centerText(const char *,int,int);
    void playSound(int soundNum);
    bool animate(const char *animation, int FPS);
    void pause(int);
    void placeIgor();
    void placeDrascula();

    void talkInit(const char *filename);
    bool isTalkFinished();
    void talk_igor(int, int);
    void talk_drascula(int index, int talkerType = 0);
    void talk_solo(const char *, const char *);
    void talk_bartender(int, int talkerType = 0);
    void talk_pen(const char *, const char *, int);
    void talk_bj_bed(int);
    void talk_htel(int);
    void talk_bj(int);
    void talk_trunk(int);
    void talk(int);
    void talk(const char *, const char *);
    void talk_sync(const char *, const char *, const char *);
    void talk_drunk(int);
    void talk_pianist(int);
    void talk_werewolf(int);
    void talk_mus(int);
    void talk_drascula_big(int);
    void talk_vonBraun(int, int);
    void talk_blind(int);
    void talk_hacker(int);
    void talk_generic(const char* said, const char* filename, int* faces, int faceCount, int* coords, byte* surface);

    void hiccup(int);
    void finishSound();
    void stopSound();
    void playMusic(int p);
    void stopMusic();
    void updateMusic();
    int musicStatus();
    void updateRoom();
    void updateDoor(int);
    void setPaletteBase(int darkness);
    void updateVisible();
    void startWalking();
    void updateRefresh();
    void updateRefresh_pre();
    void moveCharacters();
    void showMenu();
    void clearMenu();
    void removeObject();
    bool exitRoom(int);
    bool pickupObject();
    bool checkAction(int);
    void setCursor(int cursor);
    void showCursor();
    void hideCursor();
    bool isCursorVisible();
    bool soundIsActive();
    void waitFrameSSN();
    void mixVideo(byte *OldScreen, byte *NewScreen, uint16 oldPitch);
    void decodeRLE(byte *BufferRLE, byte *MiVideoRLE, uint16 pitch = 320);
    void decodeOffset(byte *BufferOFF, byte *MiVideoOFF, int length);
    int playFrameSSN(Common::SeekableReadStream *stream);

    int FrameSSN;
    int globalSpeed;
    uint32 LastFrame;

    int flag_tv;

    void showFrame(Common::SeekableReadStream *stream, bool firstFrame = false);
    int getTime();
    void reduce_hare_chico(int, int, int, int, int, int, int, byte *, byte *);
    void quadrant_1();
    void quadrant_2();
    void quadrant_3();
    void quadrant_4();
    void increaseFrameNum();
    int whichObject();
    bool checkMenuFlags();
    void setupRoomsTable();
    void freeRoomsTable();
    bool roomParse(int, int);
    void cleanupString(char *string);
    void playTalkSequence(int sequence);
    void doTalkSequenceCommand(TalkSequenceCommand cmd);
    void converse(int);
    int print_abc_opc(const char *, int, int);
    void response(int);
    void activatePendulum();

    void MusicFadeout();
    void playFile(const char *fname);

    void grr();
    void updateAnim(int y, int destX, int destY, int width, int height, int count, byte* src, int delayVal = 3, bool copyRectangle = false);

    bool room(int rN, int fl);
    bool room_0(int);
    bool room_1(int);
    bool room_2(int);
    bool room_3(int);
    bool room_4(int);
    bool room_5(int);
    bool room_6(int);
    bool room_7(int);
    bool room_8(int);
    bool room_9(int);
    bool room_12(int);
    bool room_13(int);
    bool room_14(int);
    bool room_15(int);
    bool room_16(int);
    bool room_17(int);
    bool room_18(int);
    bool room_21(int);
    bool room_22(int);
    bool room_23(int);
    bool room_24(int);
    bool room_26(int);
    bool room_27(int);
    bool room_29(int);
    bool room_30(int);
    bool room_31(int);
    bool room_34(int);
    bool room_35(int);
    bool room_49(int);
    bool room_53(int);
    bool room_54(int);
    bool room_55(int);
    bool room_56(int);
    bool room_58(int);
    bool room_59(int);
    bool room_60(int);
    bool room_62(int);
    bool room_102(int);

    void asco();

    void animation_1_1();       // Game introduction
    void animation_2_1();       // John falls in love with BJ, who is then abducted by Drascula
    void animation_3_1();       // John talks with the bartender to book a room
    void animation_4_1();       // John talks with the pianist
    //
    void animation_2_2();       // John enters the chapel via the window
    void animation_4_2();       // John talks with the blind man (closeup)
    void animation_5_2();       // John breaks the chapel window with the pike
    void animation_6_2();       // The blind man (closeup) thanks John for giving him money and hands him the sickle
    void animation_7_2();       // John uses the sickle
    void animation_11_2();      // The drunk man says "they're all dead, thanks *hic*"
    void animation_12_2();      // Conversation screen - John talks to the pianist after BJ is abducted by Drascula
    void animation_13_2();      // ???
    void animation_14_2();      // The glass box falls from the ceiling
    void animation_16_2();      // The drunk tells us about Von Braun
    void animation_20_2();      // Von Braun tells John that he needs to have special skills to fight vampires
    void animation_23_2();      // Von Braun tests John's reactions to scratching noises
    void animation_24_2();      // Conversation screen - John talks with Von Braun
    void animation_25_2();      // The glass box is lifted back to the ceiling
    void animation_26_2();      // John gives the book to the pianist and gets his earplugs in return
    void animation_27_2();      // Von Braun admits that John is ready to fight vampires and gives him his money back
    void animation_29_2();      // Von Braun tells John what ingredients he needs for the brew
    void animation_31_2();      // Von Braun obtains the items needed for the brew from John and creates it
    void animation_34_2();      // John kicks an object
    void animation_35_2();      // John jumps into the well
    void animation_36_2();      // John asks the bartender about the pianist
    //
    void animation_2_3();       // John uses the cross with the Frankenstein-zombie ("yoda") and destroys him
    void animation_6_3();       // Frankenstein is blocking John's path
    //
    void animation_castle();    // Chapter 4 start - Drascula's castle exterior, lightning strikes
    void animation_1_4();       // Conversation screen - John talks with Igor
    void animation_5_4();       // John enters Igor's room dressed as Drascula
    void animation_6_4();       // Igor says that he's going for supper
    void animation_7_4();       // John removes Drascula's disguise
    void animation_8_4();       // Secret passage behind bookcase is revealed
    //
    void animation_1_5();       // John finds BJ
    void animation_5_5();       // ???
    void animation_12_5();      // Frankenstein comes to life
    void animation_12_5_frankenstein();
    void animation_14_5();      // John finds out that an object is empty
    //
    void animation_1_6();       // ???
    void animation_5_6();       // John is tied to the table. Drascula and Igor lower the pendulum
    void animation_6_6();       // John uses the pendulum to break free
    void animation_9_6();       // Game ending - John uses the cross on Drascula and reads BJ's letter
    void animation_19_6();      // Someone pops up from behind a door when trying to open it

    void update_1_pre();
    void update_2();
    void update_3();
    void update_4();
    void update_6_pre();
    void update_9_pre();
    void update_14_pre();
    void update_13();
    void update_16_pre();
    void update_18_pre();
    void update_23_pre();
    void update_26_pre();
    void update_26();
    void update_35_pre();
    void update_58();
    void update_58_pre();
    void update_59_pre();
    void update_60_pre();
    void update_60();
    void update_62();
    void update_62_pre();
    void update_102();

private:
    int _lang;

    CharInfo *_charMap;
    int _charMapSize;

    int _itemLocationsSize;
    int _polXSize;
    int _verbBarXSize;
    int _x1dMenuSize;
    int _frameXSize;
    int _candleXSize;
    int _pianistXSize;
    int _drunkXSize;
    int _roomPreUpdatesSize;
    int _roomUpdatesSize;
    int _roomActionsSize;
    int _talkSequencesSize;
    int _numLangs;

    char **_text;
    char **_textd;
    char **_textb;
    char **_textbj;
    char **_texte;
    char **_texti;
    char **_textl;
    char **_textp;
    char **_textt;
    char **_textvb;
    char **_textsys;
    char **_texthis;
    char **_textverbs;
    char **_textmisc;
    char **_textd1;
    ItemLocation *_itemLocations;
    int *_polX, *_polY;
    int *_verbBarX;
    int *_x1d_menu, *_y1d_menu;
    int *_frameX;
    int *_candleX, *_candleY;
    int *_pianistX, *_drunkX;
    RoomUpdate *_roomPreUpdates, *_roomUpdates;
    RoomTalkAction *_roomActions;
    TalkSequenceCommand *_talkSequences;
    Common::String _saveNames[10];

    char **loadTexts(Common::File &in);
    void freeTexts(char **ptr);

protected:
    RoomHandlers    *_roomHandlers;
};


} // End of namespace Drascula

#endif /* DRASCULA_DRASCULA_H */