big_dialogue.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 PETKA_BIG_DIALOGUE_H
#define PETKA_BIG_DIALOGUE_H

#include "common/array.h"
#include "common/ustr.h"

namespace Petka {

class PetkaEngine;

enum {
    kOpcodePlay = 1,
    kOpcodeMenu,
    kOpcodeEnd,
    kOpcodeUserMessage
};

enum {
    kOperationBreak = 1,
    kOperationMenu,
    kOperationGoTo,
    kOperationDisableMenuItem,
    kOperationEnableMenuItem,
    kOperationReturn,
    kOperationPlay,
    kOperationCircle,
    kOperationUserMessage
};

struct Operation {
    union {
        struct {
            byte bits;
            uint16 bitField;
        } menu;
        struct {
            uint16 opIndex;
        } goTo;
        struct {
            uint16 opIndex;
            byte bit;
        } disableMenuItem;
        struct {
            uint16 opIndex;
            byte bit;
        } enableMenuItem;
        struct {
            uint16 messageIndex;
        } play;
        struct {
            uint16 count;
            byte curr;
        } circle;
        struct {
            uint16 arg;
        } userMsg;
    };
    byte type;
};

struct Dialog {
    uint32 startOpIndex;
    // uint32 opsCount;
    // Operation *ops;
};

struct DialogHandler {
    uint32 opcode;
    uint32 startDialogIndex;
    Common::Array<Dialog> dialogs;
};

struct DialogGroup {
    uint32 objId;
    Common::Array<DialogHandler> handlers;
};

struct SpeechInfo {
    uint32 speakerId;
    char soundName[16];
    Common::U32String text;
};

class BigDialogue {
public:
    BigDialogue(PetkaEngine &vm);

    uint opcode();

    uint choicesCount();

    void next(int choice = -1);

    const DialogHandler *findHandler(uint objId, uint opcode, bool *fallback) const;
    void setHandler(uint objId, uint opcode);

    const Common::U32String *getSpeechInfo(int *talkerId, const char **soundName, int choice);
    void getMenuChoices(Common::Array<Common::U32String> &choices);

    void load(Common::ReadStream *s);
    void save(Common::WriteStream *s);

private:
    void loadSpeechesInfo();
    bool checkMenu(uint opIndex);
    bool findOperation(uint startOpIndex, uint opType, uint *resIndex);
    void circleMoveTo(byte index);

private:
    PetkaEngine &_vm;

    Operation *_currOp;
    Common::Array<Operation> _ops;
    uint _startOpIndex;

    Common::Array<SpeechInfo> _speeches;
    Common::Array<DialogGroup> _objDialogs;
};

} // End of namespace Petka

#endif