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/* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/*
* This code is based on original Hugo Trilogy source code
*
* Copyright (c) 1989-1995 David P. Gray
*
*/
#ifndef HUGO_PARSER_H
#define HUGO_PARSER_H
namespace Common {
struct Event;
class ReadStream;
}
namespace Hugo {
enum seqTextParser {
kTBExit = 0, kTBMaze, kTBNoPoint, kTBNoun, kTBVerb,
kTBEh, kTBUnusual, kTBHave, kTBNoUse, kTBDontHave,
kTBNeed, kTBOk, kCmtAny1, kCmtAny2, kCmtAny3,
kCmtClose, kTBIntro, kTBOutro, kTBUnusual_1d, kCmtAny4,
kCmtAny5, kTBExit_1d, kTBEh_1d, kTBEh_2d, kTBNoUse_2d
};
/**
* The following determines how a verb is acted on, for an object
*/
struct cmd {
uint16 _verbIndex; // the verb
uint16 _reqIndex; // ptr to list of required objects
uint16 _textDataNoCarryIndex; // ptr to string if any of above not carried
byte _reqState; // required state for verb to be done
byte _newState; // new states if verb done
uint16 _textDataWrongIndex; // ptr to string if wrong state
uint16 _textDataDoneIndex; // ptr to string if verb done
uint16 _actIndex; // Ptr to action list if verb done
};
/**
* Following is structure of verbs and nouns for 'background' objects
* These are objects that appear in the various screens, but nothing
* interesting ever happens with them. Rather than just be dumb and say
* "don't understand" we produce an interesting msg to keep user sane.
*/
struct Background {
uint16 _verbIndex;
uint16 _nounIndex;
int _commentIndex; // Index of comment produced on match
bool _matchFl; // TRUE if noun must match when present
byte _roomState; // "State" of room. Comments might differ.
byte _bonusIndex; // Index of bonus score (0 = no bonus)
};
typedef Background *ObjectList;
class Parser {
public:
Parser(HugoEngine *vm);
virtual ~Parser();
bool isWordPresent(char **wordArr) const;
uint16 getCmdDefaultVerbIdx(const uint16 index) const;
void charHandler();
void command(const char *format, ...);
void freeParser();
void keyHandler(Common::Event event);
void loadArrayReqs(Common::SeekableReadStream &in);
void loadBackgroundObjects(Common::ReadStream &in);
void loadCatchallList(Common::ReadStream &in);
void loadCmdList(Common::ReadStream &in);
void switchTurbo();
const char *useBG(const char *name);
virtual void lineHandler() = 0;
virtual void showInventory() const = 0;
virtual void takeObject(Object *obj) = 0;
protected:
HugoEngine *_vm;
int16 _cmdLineIndex; // Index into line
uint32 _cmdLineTick; // For flashing cursor
char _cmdLineCursor;
Command _cmdLine; // Build command line
uint16 _backgroundObjectsSize;
uint16 _cmdListSize;
uint16 **_arrayReqs;
Background **_backgroundObjects;
Background *_catchallList;
cmd **_cmdList;
const char *findNoun() const;
const char *findVerb() const;
void readBG(Common::ReadStream &in, Background &curBG);
void readCmd(Common::ReadStream &in, cmd &curCmd);
void showDosInventory() const;
bool _checkDoubleF1Fl; // Flag used to display user help or instructions
uint16 _getIndex; // Index into ring buffer
uint16 _putIndex;
char _ringBuffer[32]; // Ring buffer
private:
static const int kBlinksPerSec = 2; // Cursor blinks per second
};
class Parser_v1d : public Parser {
public:
Parser_v1d(HugoEngine *vm);
~Parser_v1d();
virtual void lineHandler();
virtual void showInventory() const;
virtual void takeObject(Object *obj);
protected:
virtual void dropObject(Object *obj);
const char *findNextNoun(const char *noun) const;
bool isBackgroundWord_v1(const char *noun, const char *verb, ObjectList obj) const;
bool isCatchallVerb_v1(bool testNounFl, const char *noun, const char *verb, ObjectList obj) const;
bool isGenericVerb_v1(const char *word, Object *obj);
bool isNear_v1(const char *verb, const char *noun, Object *obj, char *comment) const;
bool isObjectVerb_v1(const char *word, Object *obj);
};
class Parser_v2d : public Parser_v1d {
public:
Parser_v2d(HugoEngine *vm);
~Parser_v2d();
void lineHandler();
};
class Parser_v3d : public Parser_v1d {
public:
Parser_v3d(HugoEngine *vm);
~Parser_v3d();
virtual void lineHandler();
protected:
void dropObject(Object *obj);
bool isBackgroundWord_v3(ObjectList obj) const;
bool isCatchallVerb_v3(ObjectList obj) const;
bool isGenericVerb_v3(Object *obj, char *comment);
bool isNear_v3(Object *obj, const char *verb, char *comment) const;
bool isObjectVerb_v3(Object *obj, char *comment);
void takeObject(Object *obj);
};
class Parser_v1w : public Parser_v3d {
public:
Parser_v1w(HugoEngine *vm);
~Parser_v1w();
virtual void showInventory() const;
void lineHandler();
};
} // End of namespace Hugo
#endif //HUGO_PARSER_H
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