bladerunner.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 BLADERUNNER_BLADERUNNER_H
#define BLADERUNNER_BLADERUNNER_H

#include "bladerunner/archive.h"

#include "common/array.h"
#include "common/random.h"
#include "common/stream.h"
#include "common/keyboard.h"
#include "common/events.h"

#include "engines/engine.h"

#include "graphics/surface.h"

#include "math/cosinetables.h"
#include "math/sinetables.h"

//TODO: change this to debugflag
#define BLADERUNNER_DEBUG_CONSOLE     0
#define BLADERUNNER_ORIGINAL_SETTINGS 0
#define BLADERUNNER_ORIGINAL_BUGS     0

namespace Common {
class Archive;
struct Event;
}

namespace GUI {
class Debugger;
}

struct ADGameDescription;

namespace BladeRunner {

enum DebugLevels {
    kDebugScript = 1 << 0,
    kDebugSound = 1 << 1,
    kDebugAnimation = 1 << 2
};

class Actor;
class ActorDialogueQueue;
class ScreenEffects;
class AIScripts;
class AmbientSounds;
class AudioCache;
class AudioMixer;
class AudioPlayer;
class AudioSpeech;
class Chapters;
class CrimesDatabase;
class Combat;
class Debugger;
class DialogueMenu;
class Elevator;
class EndCredits;
class ESPER;
class Framelimiter;
class Font;
class GameFlags;
class GameInfo;
class ItemPickup;
class Items;
class KIA;
class Lights;
class Mouse;
class Music;
class Obstacles;
class Overlays;
class PoliceMaze;
class Scene;
class SceneObjects;
class SceneScript;
class Scores;
class Settings;
class Shapes;
class SliceAnimations;
class SliceRenderer;
class Spinner;
class Subtitles;
class SuspectsDatabase;
class TextResource;
class Time;
class Vector3;
class View;
class VK;
class Waypoints;
class ZBuffer;

class BladeRunnerEngine : public Engine {
public:
    static const int kArchiveCount = 12; // +2 to original value (10) to accommodate for SUBTITLES.MIX and one extra resource file, to allow for capability of loading all VQAx.MIX and the MODE.MIX file (debug purposes)
    static const int kActorCount =  100;
    static const int kActorVoiceOver = kActorCount - 1;
    static const int kMaxCustomConcurrentRepeatableEvents = 20;

    static const int16 kOriginalGameWidth  = 640;
    static const int16 kOriginalGameHeight = 480;
    static const int16 kDemoGameWidth      = 320;
    static const int16 kDemoGameHeight     = 200;

    // Incremental number to keep track of significant revisions of the ScummVM bladerunner engine
    // that could potentially introduce incompatibilities with old save files or require special actions to restore compatibility
    // This is stored in game global variable "kVariableGameVersion"
    // Original (classic) save game files will have version number of 0
    // Values:
    // 1: alpha testing (from May 15, 2019 to July 17, 2019)
    // 2: all time code uses uint32 (since July 17 2019),
    static const int kBladeRunnerScummVMVersion = 2;

    static const char *kGameplayKeymapId;
    static const char *kKiaKeymapId;
    static const char *kCommonKeymapId;

    bool _gameIsRunning;
    bool _windowIsActive;
    int  _playerLosesControlCounter;
    int  _extraCPos;
    uint8 _extraCNotify;

    Common::String   _languageCode;
    Common::Language _language;
    bool             _russianCP1251;
    bool             _noMusicDriver; // If "Music Device" is set to "No Music" from Audio tab

    ActorDialogueQueue *_actorDialogueQueue;
    ScreenEffects      *_screenEffects;
    AIScripts          *_aiScripts;
    AmbientSounds      *_ambientSounds;
    AudioCache         *_audioCache;
    AudioMixer         *_audioMixer;
    AudioPlayer        *_audioPlayer;
    AudioSpeech        *_audioSpeech;
    Chapters           *_chapters;
    CrimesDatabase     *_crimesDatabase;
    Combat             *_combat;
    DialogueMenu       *_dialogueMenu;
    Elevator           *_elevator;
    EndCredits         *_endCredits;
    ESPER              *_esper;
    GameFlags          *_gameFlags;
    GameInfo           *_gameInfo;
    ItemPickup         *_itemPickup;
    Items              *_items;
    KIA                *_kia;
    Lights             *_lights;
    Font               *_mainFont;
    Subtitles          *_subtitles;
    Mouse              *_mouse;
    Music              *_music;
    Obstacles          *_obstacles;
    Overlays           *_overlays;
    PoliceMaze         *_policeMaze;
    Scene              *_scene;
    SceneObjects       *_sceneObjects;
    SceneScript        *_sceneScript;
    Scores             *_scores;
    Settings           *_settings;
    SliceAnimations    *_sliceAnimations;
    SliceRenderer      *_sliceRenderer;
    Spinner            *_spinner;
    SuspectsDatabase   *_suspectsDatabase;
    Time               *_time;
    View               *_view;
    Framelimiter       *_framelimiter;
    VK                 *_vk;
    Waypoints          *_waypoints;
    int                *_gameVars;

    TextResource       *_textActorNames;
    TextResource       *_textCrimes;
    TextResource       *_textClueTypes;
    TextResource       *_textKIA;
    TextResource       *_textSpinnerDestinations;
    TextResource       *_textVK;
    TextResource       *_textOptions;

    Shapes *_shapes;

    Actor *_actors[kActorCount];
    Actor *_playerActor;

    Graphics::PixelFormat _screenPixelFormat;

    Graphics::Surface  _surfaceFront;
    Graphics::Surface  _surfaceBack;
    bool               _surfaceFrontCreated;
    bool               _surfaceBackCreated;

    ZBuffer           *_zbuffer;

    Common::RandomSource _rnd;
    uint32 _newGameRandomSeed;

    Debugger *_debugger;

    Math::CosineTable *_cosTable1024;
    Math::SineTable   *_sinTable1024;

    bool _isWalkingInterruptible;
    bool _interruptWalking;
    bool _playerActorIdle;
    bool _playerDead;
    bool _actorIsSpeaking;
    bool _actorSpeakStopIsRequested;
    bool _gameOver;
    bool _gameJustLaunched;
    int  _gameAutoSaveTextId;
    bool _gameIsAutoSaving;
    bool _gameIsLoading;
    bool _sceneIsLoading;
    bool _vqaIsPlaying;
    bool _vqaStopIsRequested;
    bool _subtitlesEnabled;  // tracks the state of whether subtitles are enabled or disabled from ScummVM GUI option or KIA checkbox (the states are synched)
    bool _showSubtitlesForTextCrawl;
    bool _sitcomMode;
    bool _shortyMode;
    bool _noDelayMillisFramelimiter;
    bool _framesPerSecondMax;
    bool _disableStaminaDrain;
    bool _spanishCreditsCorrection;
    bool _cutContent;
    bool _enhancedEdition;
    bool _validBootParam;

    int _walkSoundId;
    int _walkSoundVolume;
    int _walkSoundPan;
    int _runningActorId;

    uint32 _mouseClickTimeLast;
    uint32 _mouseClickTimeDiff;

    int  _walkingToExitId;
    bool _isInsideScriptExit;
    int  _walkingToRegionId;
    bool _isInsideScriptRegion;
    int  _walkingToObjectId;
    bool _isInsideScriptObject;
    int  _walkingToItemId;
    bool _isInsideScriptItem;
    bool _walkingToEmpty;
    int  _walkingToEmptyX;
    int  _walkingToEmptyY;
    bool _isInsideScriptEmpty;
    int  _walkingToActorId;
    bool _isInsideScriptActor;

    int    _actorUpdateCounter;
    uint32 _actorUpdateTimeLast;

    uint32 _timeOfMainGameLoopTickPrevious;

    bool _isNonInteractiveDemo;

    // This addon is to emulate keeping a keyboard key pressed (continuous / repeated firing of the event)
    // -- code is pretty much identical from our common\events.cpp (KeyboardRepeatEventSourceWrapper)
    // for continuous events (keyDown)
    enum {
        kKeyRepeatInitialDelay = 400,
        kKeyRepeatSustainDelay = 100
    };

    Common::KeyState _currentKeyDown;
    uint32 _keyRepeatTimeLast;
    uint32 _keyRepeatTimeDelay;

    uint32 _customEventRepeatTimeLast;
    uint32 _customEventRepeatTimeDelay;
    typedef Common::Array<Common::Event> ActiveCustomEventsArray;

    // We do allow keys mapped to the same event,
    // so eg. a key (Enter) could cause 2 or more events to fire,
    // However, we should probably restrict the active events
    // (that can be repeated while holding the mapped keys down)
    // to a maximum of kMaxCustomConcurrentRepeatableEvents
    ActiveCustomEventsArray _activeCustomEvents;

    // NOTE We still need keyboard functionality for naming saved games and also for the KIA Easter eggs.
    //      In KIA keyboard events should be accounted where possible - however some keymaps are still needed
    //      which is why we have the three separate common, gameplay-only and kia-only keymaps.
    //      If a valid keyboard key character eg. ("A") for text input (or Easter egg input)
    //      is also mapped to a common or KIA only custom event, then the custom event will be effected and not the key input.
    // NOTE We don't use a custom action for left click -- we just use the standard left click action event (kStandardActionLeftClick)
    // NOTE Dialogue Skip does not work for dialogue replayed when clicking on KIA clues (this is the original's behavior too)
    // NOTE Toggle KIA options does not work when McCoy is walking towards a character when the player clicks on McCoy
    //      (this is the original's behavior too).
    //      "Esc" (by default) or the mapped key to this action still works though.
    // NOTE A drawback of using customized keymapper for the game is that we can no longer replicate the original's behavior
    //      whereby holding down <SPACEBAR> would cause McCoy to keep switching quickly between combat mode and normal mode.
    //      This is because the original, when holding down right mouse button, would just toggle McCoy's mode once.
    //      We keep the behavior for "right mouse button".
    //      The continuous fast toggle behavior when holding down <SPACEBAR> feels more like a bug anyway.
    // NOTE In the original, the KP_PERIOD key with NUMLOCK on, would work as a normal '.' character
    //      in the KIA Save Game screen. With NUMLOCK off, it would work as a delete request for the selected entry.
    //      However, NUMLOCK is currently not working as a modifier key for keymaps,
    //      so maybe we can implement the original behavior more accurately,
    //      when that is fixed in the keymapper or hardware-input code.
    //      For now, KP_PERIOD will work (by default) as a delete request.
    enum BladeRunnerEngineMappableAction {
//      kMpActionLeftClick,        // default <left click> (select, walk-to, run-to, look-at, talk-to, use, shoot (combat mode), KIA (click on McCoy))
        kMpActionToggleCombat,     // default <right click> or <Spacebar>
        kMpActionCutsceneSkip,     // default <Return> or <KP_Enter> or <Esc> or <Spacebar>
        kMpActionDialogueSkip,     // default <Return> or <KP_Enter>
        kMpActionToggleKiaOptions, // default <Esc> opens/closes KIA, in Options tab
        kMpActionOpenKiaDatabase,  // default <Tab> - only opens KIA (if closed), in one of the database tabs (the last active one, or else the first)
        kMpActionOpenKIATabHelp,               // default <F1>
        kMpActionOpenKIATabSaveGame,           // default <F2>
        kMpActionOpenKIATabLoadGame,           // default <F3>
        kMpActionOpenKIATabCrimeSceneDatabase, // default <F4>
        kMpActionOpenKIATabSuspectDatabase,    // default <F5>
        kMpActionOpenKIATabClueDatabase,       // default <F6>
        kMpActionOpenKIATabQuitGame,           // default <F10>
        kMpActionScrollUp,                     // ScummVM addition (scroll list up)
        kMpActionScrollDown,                   // ScummVM addition (scroll list down)
        kMpConfirmDlg,                         // default <Return> or <KP_Enter>
        kMpDeleteSelectedSvdGame,              // default <Delete> or <KP_Period>
        kMpActionToggleCluePrivacy             // default <right click>
    };

private:
    MIXArchive _archives[kArchiveCount];
    Common::Archive *_archive;

public:
    BladeRunnerEngine(OSystem *syst, const ADGameDescription *desc);
    ~BladeRunnerEngine() override;

    bool hasFeature(EngineFeature f) const override;
    bool canLoadGameStateCurrently(Common::U32String *msg = nullptr) override;
    Common::Error loadGameState(int slot) override;
    bool canSaveGameStateCurrently(Common::U32String *msg = nullptr) override;
    Common::Error saveGameState(int slot, const Common::String &desc, bool isAutosave = false) override;
    int getAutosaveSlot() const override { return -1; }

    void pauseEngineIntern(bool pause) override;

    Common::Error run() override;

    bool checkFiles(Common::Array<Common::String> &missingFiles);

    bool startup(bool hasSavegames = false);
    void initChapterAndScene();
    void shutdown();

    bool loadSplash();

    Common::Point getMousePos() const;
    bool isMouseButtonDown() const;

    void gameLoop();
    void gameTick();

    void actorsUpdate();

    void walkingReset();

    void handleEvents();
    void handleKeyUp(Common::Event &event);
    void handleKeyDown(Common::Event &event);
    void handleMouseAction(int x, int y, bool mainButton, bool buttonDown, int scrollDirection = 0);
    void handleMouseClickExit(int exitId, int x, int y, bool buttonDown);
    void handleMouseClickRegion(int regionId, int x, int y, bool buttonDown);
    void handleMouseClickItem(int itemId, bool buttonDown);
    void handleMouseClickActor(int actorId, bool mainButton, bool buttonDown, Vector3 &scenePosition, int x, int y);
    void handleMouseClick3DObject(int objectId, bool buttonDown, bool isClickable, bool isTarget);
    void handleMouseClickEmpty(int x, int y, Vector3 &scenePosition, bool buttonDown);

    bool isAllowedRepeatedKey(const Common::KeyState &currKeyState);

    void handleCustomEventStart(Common::Event &event);
    void handleCustomEventStop(Common::Event &event);
    bool isAllowedRepeatedCustomEvent(const Common::Event &currEvent);

    bool shouldDropRogueCustomEvent(const Common::Event &evt);
    void cleanupPendingRepeatingEvents(const Common::String &keymapperId);

    void gameWaitForActive();
    void loopActorSpeaking();
    void loopQueuedDialogueStillPlaying();

    void outtakePlay(int id, bool no_localization, int container = -1);
    void outtakePlay(const Common::String &basenameNoExt, bool no_localization, int container = -3);

    bool openArchive(const Common::String &name);
    bool closeArchive(const Common::String &name);
    bool isArchiveOpen(const Common::String &name) const;

    bool openArchiveEnhancedEdition();

    void syncSoundSettings() override;
    bool isSubtitlesEnabled();
    void setSubtitlesEnabled(bool newVal);

    Common::SeekableReadStream *getResourceStream(const Common::String &name);

    bool playerHasControl();
    void playerLosesControl();
    void playerGainsControl(bool force = false);
    void playerDied();

    bool saveGame(Common::WriteStream &stream, Graphics::Surface *thumb = NULL, bool origformat = false);
    bool loadGame(Common::SeekableReadStream &stream, int version);
    void newGame(int difficulty);
    void autoSaveGame(int textId, bool endgame);

    void ISez(const Common::String &str);

    void blitToScreen(const Graphics::Surface &src) const;
    Graphics::Surface generateThumbnail() const;

    Common::String getTargetName() const;

    uint8 getExtraCNotify();
    void  setExtraCNotify(uint8 val);
};

static inline const Graphics::PixelFormat gameDataPixelFormat() {
    return Graphics::PixelFormat(2, 5, 5, 5, 1, 10, 5, 0, 15);
}

static inline void getGameDataColor(uint16 color, uint8 &a, uint8 &r, uint8 &g, uint8 &b) {
    // gameDataPixelFormat().colorToARGB(vqaColor, a, r, g, b);
    // using pixel format functions is too slow on some ports because of runtime checks
    uint8 r5 = (color >> 10) & 0x1F;
    uint8 g5 = (color >>  5) & 0x1F;
    uint8 b5 = (color      ) & 0x1F;
    a = color >> 15;
    r = (r5 << 3) | (r5 >> 2);
    g = (g5 << 3) | (g5 >> 2);
    b = (b5 << 3) | (b5 >> 2);
}

static inline const Graphics::PixelFormat screenPixelFormat() {
    return ((BladeRunnerEngine*)g_engine)->_screenPixelFormat;
}

static inline void drawPixel(Graphics::Surface &surface, void* dst, uint32 value) {
    switch (surface.format.bytesPerPixel) {
    case 1:
        *(uint8*)dst = (uint8)value;
        break;
    case 2:
        *(uint16*)dst = (uint16)value;
        break;
    case 4:
        *(uint32*)dst = (uint32)value;
        break;
    default:
        break;
    }
}

static inline void getPixel(Graphics::Surface &surface, void* dst, uint32 &value) {
    switch (surface.format.bytesPerPixel) {
    case 1:
         value = (uint8)(*(uint8*)dst);
        break;
    case 2:
         value = (uint16)(*(uint16*)dst);
        break;
    case 4:
        value = (uint32)(*(uint32*)dst);
        break;
    default:
        break;
    }
}

void blit(const Graphics::Surface &src, Graphics::Surface &dst);

} // End of namespace BladeRunner

#endif