types.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 PELROCK_TYPES_H
#define PELROCK_TYPES_H

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

namespace Pelrock {

enum Cursor {
    DEFAULT,
    HOTSPOT,
    EXIT,
    ALFRED,
    COMBINATION
};

const byte kActionMaskNone = 0;
const byte kActionMaskOpen = 1;
const byte kActionMaskClose = 2;
const byte kActionMaskUnknown = 4;
const byte kActionMaskPickup = 8;
const byte kActionMaskTalk = 16;
const byte kActionMaskPush = 32;
const byte kActionMaskPull = 128;

enum VerbIcon {
    PICKUP,
    TALK,
    WALK,
    LOOK,
    PUSH,
    PULL,
    OPEN,
    CLOSE,
    ITEM,
    UNKNOWN,
    NO_ACTION
};

const int kCursorWidth = 16;
const int kCursorHeight = 18;
const int kCursorSize = 288; // 16 * 18

const int kVerbIconWidth = 60;
const int kVerbIconHeight = 60;
const int kNumVerbIcons = 9;

const int kBalloonWidth = 247;
const int kBalloonHeight = 112;
const int kBalloonFrames = 4;

const int kAlfredFrameWidth = 51;
const int kAlfredFrameHeight = 102;

const int kTalkAnimationSpeed = 2;   // Frames per update
const int kAlfredAnimationSpeed = 2; // Frames per update

const int kAlfredIdleAnimationFrameCount = 300; // comb animation plays every ~16 seconds of idle alfred
const int kAlfredIdleScreenSaverFrameCount = 1090; // screen saver shows up after 60 seconds

const int kInventoryPageSize = 10;

const int kAlfredInitialPosX = 235;
const int kAlfredInitialPosY = 279;

// Direction flags (bit-packed)
const byte kMoveRight = 0x01; // Move right (positive X)
const byte kMoveLeft = 0x02;  // Move left (negative X)
const byte kMoveHoriz = 0x03; // Horizontal movement mask
const byte kMoveDown = 0x04;  // Move down (positive Y)
const byte kMoveUp = 0x08;    // Move up (negative Y)
const byte kMoveVert = 0x0C;  // Vertical movement mask
const int kMaxPathLength = 100;
const int kMaxMovementSteps = 100; // 500 bytes / 5 bytes per step
const byte kPathEnd = 0xFF;        // End of path marker

const byte kAlfredColor = 0x0D;

enum OverlayMode {
    OVERLAY_NONE = 0,
    OVERLAY_CHOICES = 1,
    OVERLAY_PICKUP_ICON = 2,
    OVERLAY_ACTION = 3
};

// Passerby direction constants
const byte kPasserbyRight = 0;
const byte kPasserbyLeft = 1;
const byte kPasserbyDown = 2;

const byte kIconBlinkPeriod = 4;

enum AlfredAnimState {
    ALFRED_IDLE,
    ALFRED_WALKING,
    ALFRED_TALKING,
    ALFRED_INTERACTING,
    ALFRED_COMB,
    ALFRED_SPECIAL_ANIM,
    ALFRED_SKIP_DRAWING
};

enum AlfredDirection {
    ALFRED_RIGHT = 0,
    ALFRED_LEFT = 1,
    ALFRED_DOWN = 2,
    ALFRED_UP = 3
};

struct AlfredSpecialAnim {
    byte *animData = nullptr;
    int w = 0;
    int h = 0;
    int numFrames = 0;
    int loopCount = 0;
    uint32 stride = 0;
    int curFrame = 0;
    int curLoop = 0;
    uint32 size = 0;
    int speed = 2;
    AlfredSpecialAnim(int nF, int width, int height, int nBudas, uint32 off, int lCount, uint32 sz, int spd = 2)
        : numFrames(nF), w(width), h(height), loopCount(lCount), size(sz), speed(spd) {
        stride = w * h;
    }

    ~AlfredSpecialAnim() {
        if (animData) {
            delete[] animData;
            animData = nullptr;
        }
    }
};

struct ActionPopupState {
    bool isActive = false;
    int curFrame = 0;
    int x = 0;
    int y = 0;
    int displayTime = 0;
    bool isAlfredUnder = false;
};

struct InventoryOverlayState {
    bool isActive = false;
    int invStartingPos = 0;
    int flashingIconIndex = -1;
    Common::Rect inventorySelectionArea = Common::Rect(0, 340, 640, 400);
    Common::Rect ballonInventoryPath = Common::Rect(0, 0, kBalloonWidth, kBalloonHeight);
    byte *arrows[2] = {nullptr, nullptr};

    bool posInInventorySelectionArea(int x, int y) {
        return inventorySelectionArea.contains(x, y);
    }
};

struct AlfredState {
    AlfredAnimState animState = ALFRED_IDLE;
    AlfredDirection direction = ALFRED_DOWN;
    int curFrame = 0;
    uint16 movementSpeedX = 6; // pixels per frame
    uint16 movementSpeedY = 5; // pixels per frame
    uint16 x = kAlfredInitialPosX;
    uint16 y = kAlfredInitialPosY;
    byte w = kAlfredFrameWidth;
    byte h = kAlfredFrameHeight;
    int idleFrameCounter = 0;
    int screenSaverFrameCounter = 0;
    bool isWalkingCancelable = true;

    void setState(AlfredAnimState nextState) {
        animState = nextState;
        curFrame = 0;
    }

    void resetIdles() {
        idleFrameCounter = 0;
        screenSaverFrameCounter = 0;
    }
};

struct ShakeEffectState {
    bool enabled = false;
    int shakeX = 0;
    int shakeY = 0;

    void enable() {
        enabled = true;
    }

    void disable() {
        enabled = false;
        shakeX = 0;
        shakeY = 0;
        g_system->setShakePos(0, 0);
    }
};

struct MovementStep {
    byte flags;       /* Direction flags (see kMove* constants) */
    uint16 distanceX; // Horizontal distance to move
    uint16 distanceY; // Vertical distance to move
};

struct PathContext {
    byte *pathBuffer;             // Sequence of walkbox indices
    MovementStep *movementBuffer; // Array of movement steps
    uint16 pathLength;
    uint16 movementCount;
    uint16 compressed_length;
};

struct ExtraScreen {
    uint32 offset;
    uint32 paletteOffset;
    byte numChunks;
};

struct AlfredSpecialAnimOffset {
    int numFrames;
    int w;
    int h;
    int numBudas;
    int numAlfred;
    uint32 offset;
    int loops;
    int speed;
    uint32 size; // 0 = compute from numFrames * w * h
};

struct Anim {
    int nframes = 0;
    int curFrame = 0;
    int curLoop = 0;
    byte **animData = nullptr;
    byte loopCount = 0;
    byte speed = 0;
    byte elpapsedFrames = 0;
    uint16 movementFlags = 0;
};

struct Exit {
    byte index;
    int16 x;
    int16 y;
    byte w;
    byte h;
    uint16 targetRoom;
    int16 targetX;
    int16 targetY;
    AlfredDirection dir;
    byte isEnabled;
};

struct Sprite {
    byte index;    // number of the animation in the rooms
    int16 x;       // 0
    int16 y;       // 2
    int w;         // 4
    int h;         // 5
    uint16 stride; // 6-7
    int numAnims;  // 8
    int curAnimIndex = 0;
    byte zOrder;                       // byte at file offset 23
    byte actionFlags;                  // 34
    bool isHotspotDisabled;            // 38
    bool disableAfterSequence = false; // 39
    bool isTalking = false;
    byte talkingAnimIndex = 0;
    Anim *animData;
    int16 extra;
};

struct HotSpot {
    byte index = 0;
    byte innerIndex = 0;
    int id = 0;
    int16 x = 0;
    int16 y = 0;
    int w = 0;
    int h = 0;
    byte actionFlags = 0;
    int16 extra = 0;
    bool isEnabled = true;
    bool isSprite = false;
    byte zOrder = 0;
};

struct TalkingAnims {
    uint32 spritePointer = 0;

    byte unknown2[3];

    int8 offsetXAnimA = 0;
    int8 offsetYAnimA = 0;

    byte wAnimA = 0;
    byte hAnimA = 0;
    byte unknown3[2];
    byte numFramesAnimA = 0;
    byte unknown4[4]; // slot 0 data pointer (unused in ScummVM)
    byte speedByteA = 0;  // slot 0 offset 0x12: controls NPC talk render rate (original: 2+speedByte ticks per render)

    int8 offsetXAnimB = 0;
    int8 offsetYAnimB = 0;

    byte wAnimB = 0;
    byte hAnimB = 0;
    byte unknown5[2]; // slot 1 stride (unused in ScummVM)
    byte numFramesAnimB = 0;
    byte unknown7[4];  // slot 1 data pointer (unused in ScummVM)
    byte speedByteB = 0;   // slot 1 speed byte at file offset 30
    byte unknown6[24]; // slots 2-3 (unused)

    // Runtime fields (not read from file)
    byte currentFrameAnimA = 0;
    byte currentFrameAnimB = 0;

    byte **animA = nullptr;
    byte **animB = nullptr;
};

struct Description {
    byte itemId = 0;
    byte index = 0;
    bool isAction = false;
    uint16 actionTrigger = 0;
    Common::String text;
};

struct WalkBox {
    byte index;
    int16 x;
    int16 y;
    int16 w;
    int16 h;
    byte flags;
};

struct QueuedAction {
    VerbIcon verb;
    int hotspotIndex;
    bool isQueued;       // Alfred is walking/interacting toward the target
    bool readyToExecute; // Animation done - execute after the current renderScene
};

struct ScalingParams {
    int16 yThreshold;
    byte scaleDivisor;
    byte scaleMode;
};

struct ScaleCalculation {
    int scaledWidth;
    int scaledHeight;
    int scaleX; // Amount to subtract from width (was scaleUp)
    int scaleY; // Amount to subtract from height (was scaleDown)
};

enum GameState {
    GAME = 100,
    CREDITS = 101,
    SETTINGS = 102,
    INTRO = 103,
    COMPUTER = 104
};

struct SpriteChange {
    byte roomNumber;
    byte spriteIndex;
    byte zIndex;
};

struct HotSpotChange {
    byte roomNumber;
    byte hotspotIndex;
    HotSpot hotspot;
};

struct ExitChange {
    byte roomNumber;
    byte exitIndex;
    bool enabled;
};

struct WalkBoxChange {
    byte roomNumber;
    byte walkboxIndex;
    WalkBox walkbox;
};

struct InventoryObject {
    byte index;
    Common::String description;
    byte iconData[60 * 60];
};

struct PaletteAnimFade {
    byte startIndex;
    byte paletteMode;
    byte currentR;
    byte currentG;
    byte currentB;
    byte minR;
    byte minG;
    byte minB;
    byte maxR;
    byte maxG;
    byte maxB;
    byte speed;
    bool downDirection;
    byte curFrameCount = 0;
};

struct Sticker {
    int stickerIndex;
    uint16 x;
    uint16 y;
    byte w;
    byte h;
};

struct PaletteAnimRotate {
    byte startIndex = 0;
    byte paletteMode = 0;
    byte unknown = 0;
    byte delay = 0;
    byte unknownBytes[7] = {0};
    byte flags = 0;
    byte curFrameCount = 0;
};

struct PaletteAnim {
    byte startIndex = 0;
    byte paletteMode = 0;
    byte data[10] = {0}; // Based on mode its a rotate or fade
    byte curFrame = 0;
    byte tickCount = 0;
};

struct PasserByAnim {
    uint32 frameTrigger = 0x3FF;
    int16 startX;
    int16 startY;
    int16 resetCoord;
    byte dir;
    byte spriteIndex;
    byte targetZIndex;

    PasserByAnim() = default;
    PasserByAnim(byte spriteIndex_, int16 startX_, int16 startY_, byte dir_, int16 resetCoord_, byte targetZIndex_, uint32 frameTrigger_)
        : frameTrigger(frameTrigger_), startX(startX_), startY(startY_), resetCoord(resetCoord_), dir(dir_), spriteIndex(spriteIndex_), targetZIndex(targetZIndex_) {}
};

struct RoomPasserBys {
    byte roomNumber;
    PasserByAnim passerByAnims[2];
    byte currentAnimIndex = 0;
    byte numAnims = 0;
    bool latch = false;
    RoomPasserBys(byte roomNum, byte nAnims) : roomNumber(roomNum), numAnims(nAnims) {}
};

struct ChoiceOption {
    byte room = static_cast<byte>(-1);
    int choiceIndex;
    Common::String text;
    uint32 dataOffset;
    bool isDisabled = false;
    bool shouldDisableOnSelect = false;
    bool hasConversationEndMarker = false;
    bool isTerminator = false;
    uint charOffset = 0;

    ChoiceOption() : choiceIndex(-1), dataOffset(0) {}
};

struct ResetEntry {
    uint16 room = 0;
    uint16 offset = 0;
    byte dataSize = 0;
    byte *data = nullptr;
};

#define FLAG_BOSS_WIRED_MONEY 0
#define FLAG_BOSS_IN_JAIL 1
#define FLAG_SPICY_SAUCE_PLACED 2
#define FLAG_BROKEN_GLASS 3
#define FLAG_FIRST_TIME_IN_SHOP 4
#define FLAG_ELECTROSHOCK 5
#define FLAG_CABLES_PLACED 6
#define FLAG_DOORMAN_BRIBED 7
#define FLAG_BOOK_MEMORIZED 8
#define FLAG_ALFRED_SMART 9
#define FLAG_ALFRED_SPEAKS_EGYPTIAN 10
#define FLAG_SALESMAN_LEAVES_ALFRED_ALONE 11
#define FLAG_TRAVEL_TO_EGYPT 12
#define FLAG_SOLVED_PARADOX 13
#define FLAG_CROCODILE_ON 14
#define FLAG_LOOKED_SYMBOL_MUSEUM_EXTERIOR 15
#define FLAG_SECRET_DOOR_OPEN 16
#define FLAG_STOLE_PRINCESS_HAIR 17
#define FLAG_TO_JAIL 18
#define FLAG_SAFE_COMBINATION 19
#define FLAG_DOLL_PLACED 20
#define FLAG_GUARD_WATER_DRINKED 21
#define FLAG_GUARD_PEEING 22
#define FLAG_PYRAMID_COLLAPSED 23
#define FLAG_PYRAMID_COLLAPSED2 24
#define FLAG_GUARD_HAVINGFUN 25
#define FLAG_MAGIC_FORMULA 26
#define FLAG_TIME_TRAVEL 27
#define FLAG_EUNUCH_APPEARS 28
#define FLAG_PHARAOH_VIEWING 29
#define FLAG_TO_WORK 30
#define FLAG_STONE_GIVEN 31
#define FLAG_COLLECTED_STONES 32
#define FLAG_DRUNK_GUARDS 33
#define FLAG_FAKE_STONE_WET 34
#define FLAG_CORRECT_DOOR 35
#define FLAG_TRAPDOOR_OPEN 36
#define FLAG_PRINCESS_ROOM 37
#define FLAG_GET_THE_PRINCESS 38
#define FLAG_GAME_RESTART 39
#define FLAG_CORRIDORS 40
#define FLAG_GODS_STANCES 41
#define FLAG_END_OF_GAME 42
#define FLAG_FROM_INTRO 43
#define FLAG_STONE_THROWN 44
#define FLAG_USED_WATER 45
#define FLAG_OPEN_SHOP 46
#define FLAG_DRINKS_NUMBER 47
#define FLAG_COLLECTED_INGREDIENTS 48
#define FLAG_GUARD_ASKS_FOR_STUFF 49
#define FLAG_GUARD_ID_DELIVERED 50
#define FLAG_TRAVELAGENCY_OPEN 51
#define FLAG_MERCHANT_SLOGANS 52
#define FLAG_HOOKER_250_TIMES 53
#define FLAG_CORRECT_ANSWERS 54
#define FLAG_CHEAT_CODE_ENABLED 55
#define FLAG_RIDDLE_PRESENTED 56
#define FLAG_SYMBOLS_PUSHED 57
#define FLAG_MERCHANT_GIVENITEMS 58
#define FLAG_CORRECT_DOOR_CHOSEN 59
#define FLAG_SKELETON_RECOGNIZES 60
#define FLAG_PIGEON_DEAD 61
#define FLAG_RECIPE_TAKEN 62

const int kNumGameFlags = 63;

struct GameStateData {
    byte flags[kNumGameFlags];

    GameState stateGame = INTRO;

    Common::Array<byte> inventoryItems;
    int16 selectedInventoryItem = -1;

    int libraryShelf = -1;
    int selectedBookIndex = -1;
    char bookLetter = '\0';
    Common::HashMap<byte, Common::Array<Sticker>> stickersPerRoom;
    Common::HashMap<byte, Common::Array<ExitChange>> roomExitChanges;
    Common::HashMap<byte, Common::Array<WalkBoxChange>> roomWalkBoxChanges;
    Common::HashMap<byte, Common::Array<HotSpotChange>> roomHotSpotChanges;
    Common::HashMap<byte, Common::Array<ResetEntry>> disabledBranches;
    Common::HashMap<byte, Common::Array<SpriteChange>> spriteChanges;

    GameStateData() {
        clear();
    }

    ~GameStateData() {
        clearBranches();
        delete[] conversationCurrentRoot;
        conversationCurrentRoot = nullptr;
    }

    void clear() {
        memset(conversationCurrentRoot, 0xFF, 112); // Initialize all to 0xFF (not set)
        for (int i = 0; i < kNumGameFlags; i++)
            flags[i] = 0;
        flags[FLAG_FIRST_TIME_IN_SHOP] = true;
        inventoryItems.clear();
        stickersPerRoom.clear();
        roomExitChanges.clear();
        roomWalkBoxChanges.clear();
        roomHotSpotChanges.clear();
        spriteChanges.clear();
        clearBranches();
        libraryShelf = -1;
        selectedBookIndex = -1;
        bookLetter = '\0';
        stateGame = GAME;
    }

    void clearBranches() {
        for(auto &entry : disabledBranches) {
            for (ResetEntry &resetEntry : entry._value) {
                if (resetEntry.data) {
                    delete[] resetEntry.data;
                    resetEntry.data = nullptr;
                }
            }
        }
        disabledBranches.clear();
    }

    void addDisabledBranch(ResetEntry entry) {
        disabledBranches[entry.room].push_back(entry);
    }

    byte getFlag(int flagIndex) const {
        if (flagIndex < 0 || flagIndex >= kNumGameFlags)
            return false;
        return flags[flagIndex];
    }

    bool getBoolFlag(int flagIndex) const {
        return getFlag(flagIndex) != 0;
    }

    void setFlag(int flagIndex, byte value) {
        if (flagIndex < 0 || flagIndex >= kNumGameFlags)
            return;
        flags[flagIndex] = value;
    }

    void addInventoryItem(int id) {
        inventoryItems.push_back(id);
    }

    void clearInventory() {
        inventoryItems.clear();
        selectedInventoryItem = -1;
    }

    void removeInventoryItem(int id) {
        for (uint i = 0; i < inventoryItems.size(); i++) {
            if (inventoryItems[i] == id) {
                inventoryItems.remove_at(i);
                break;
            }
        }
        if (selectedInventoryItem == id) {
            if (inventoryItems.size() > 0) {
                selectedInventoryItem = inventoryItems[0];
            } else {
                selectedInventoryItem = -1;
            }
        }
    }

    bool hasInventoryItem(int id) const {
        for (uint i = 0; i < inventoryItems.size(); i++) {
            if (inventoryItems[i] == id) {
                return true;
            }
        }
        return false;
    }

    // Store current root index for each room (0xFF = not set, use findRoot logic)
    byte *conversationCurrentRoot = new byte[112];

    int getCurrentRoot(byte room, int npc) const {
        if (room >= 56)
            return -1;
        return (conversationCurrentRoot[room * 2 + npc] == 0xFF) ? -1 : conversationCurrentRoot[room * 2 + npc];
    }

    void setCurrentRoot(byte room, int root, int npc) {
        if (room >= 56)
            return;
        if (root < 0 || root > 254) {
            conversationCurrentRoot[room * 2 + npc] = 0xFF; // Reset to auto-select
        } else {
            conversationCurrentRoot[room * 2 + npc] = (byte)root;
        }
    }

    int findFirstBookIndex() {
        for (uint i = 0; i < inventoryItems.size(); i++) {
            int x = inventoryItems[i];
            if ((x >= 11) && (x <= 58))
                return x;
        }
        return -1;
    }

    int booksInInventory() {
        int l = inventoryItems.size();
        int count = 0;
        for (int i = 0; i < l; i++) {
            int x = inventoryItems[i];
            if ((x >= 11) && (x <= 58))
                count++;
        }
        return count;
    }
};

struct SaveGameData {
    byte currentRoom = 0;
    uint16 alfredX = 0;
    uint16 alfredY = 0;
    AlfredDirection alfredDir = ALFRED_DOWN;
    GameStateData *gameState = nullptr;
};

struct FightRoomCfg {
    int roomNumber;
    int spriteIdx;
    int appearFrames;
    int spellFrames;
    int spellPage;
};

static const FightRoomCfg kFightRooms[] = {
    {51, 1, 31, 17, 8}, // room 51
    {52, 0, 30, 13, 4}, // room 52
    {53, 1, 30, 13, 0}, // room 53
    {54, 1, 38, 11, 2}, // room 54
};

} // End of namespace Pelrock

#endif