/* 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.
 *
 */

#ifndef PRINCE_SCRIPT_H
#define PRINCE_SCRIPT_H

#include "common/random.h"

#include "audio/mixer.h"

namespace Common {
	class SeekableReadStream;
}

namespace Prince {

class PrinceEngine;

class Script {
public:
	Script(PrinceEngine *vm);
	virtual ~Script();

	bool loadFromStream(Common::SeekableReadStream &stream);

	void step();

private:
	PrinceEngine *_vm;

	byte *_code;
	uint32 _codeSize;
	uint32 _currentInstruction;
	uint16 _lastOpcode;
	uint32 _lastInstruction;
	byte _result;
	int16 _flags[2000];
	bool _opcodeNF;

	// Stack
	static const uint32 _STACK_SIZE = 500;
	uint32 _stack[_STACK_SIZE];
	uint8 _stacktop;
	uint8 _savedStacktop;
	uint32 _waitFlag;
	Audio::SoundHandle _soundHandle;

	const byte * _string;
	uint32 _currentString;
	Common::SeekableReadStream *_voiceStream;

	// Helper functions
	void checkPC(uint32 address);
	uint8 getCodeByte(uint32 address);
	uint8 readScript8bits();
	uint16 readScript16bits();
	uint32 readScript32bits();
	uint16 readScript8or16bits();
	void debugScript(const char *s, ...);
	void SetVoice(uint32 slot);

	typedef void (Script::*OpcodeFunc)();
	static OpcodeFunc _opcodes[];

	void O_WAITFOREVER();
	void O_BLACKPALETTE();
	void O_SETUPPALETTE();
	void O_INITROOM();
	void O_SETSAMPLE();
	void O_FREESAMPLE();
	void O_PLAYSAMPLE();
	void O_PUTOBJECT();
	void O_REMOBJECT();
	void O_SHOWANIM();
	void O_CHECKANIMEND();
	void O_FREEANIM();
	void O_CHECKANIMFRAME();
	void O_PUTBACKANIM();
	void O_REMBACKANIM();
	void O_CHECKBACKANIMFRAME();
	void O_FREEALLSAMPLES();
	void O_SETMUSIC();
	void O_STOPMUSIC();
	void O__WAIT();
	void O_UPDATEOFF();
	void O_UPDATEON();
	void O_UPDATE ();
	void O_CLS();
	void O__CALL();
	void O_RETURN();
	void O_GO();
	void O_BACKANIMUPDATEOFF();
	void O_BACKANIMUPDATEON();
	void O_CHANGECURSOR();
	void O_CHANGEANIMTYPE();
	void O__SETFLAG();
	void O_COMPARE();
	void O_JUMPZ();
	void O_JUMPNZ();
	void O_EXIT();
	void O_ADDFLAG();
	void O_TALKANIM();
	void O_SUBFLAG();
	void O_SETSTRING();
	void O_ANDFLAG();
	void O_GETMOBDATA();
	void O_ORFLAG();
	void O_SETMOBDATA();
	void O_XORFLAG();
	void O_GETMOBTEXT();
	void O_MOVEHERO();
	void O_WALKHERO();
	void O_SETHERO();
	void O_HEROOFF();
	void O_HEROON();
	void O_CLSTEXT();
	void O_CALLTABLE();
	void O_CHANGEMOB();
	void O_ADDINV();
	void O_REMINV();
	void O_REPINV();
	void O_OBSOLETE_GETACTION();
	void O_ADDWALKAREA();
	void O_REMWALKAREA();
	void O_RESTOREWALKAREA();
	void O_WAITFRAME();
	void O_SETFRAME();
	void O_RUNACTION();
	void O_COMPAREHI();
	void O_COMPARELO();
	void O_PRELOADSET();
	void O_FREEPRELOAD();
	void O_CHECKINV();
	void O_TALKHERO();
	void O_WAITTEXT();
	void O_SETHEROANIM();
	void O_WAITHEROANIM();
	void O_GETHERODATA();
	void O_GETMOUSEBUTTON();
	void O_CHANGEFRAMES();
	void O_CHANGEBACKFRAMES();
	void O_GETBACKANIMDATA();
	void O_GETANIMDATA();
	void O_SETBGCODE();
	void O_SETBACKFRAME();
	void O_GETRND();
	void O_TALKBACKANIM();
	void O_LOADPATH();
	void O_GETCHAR();
	void O_SETDFLAG();
	void O_CALLDFLAG();
	void O_PRINTAT();
	void O_ZOOMIN();
	void O_ZOOMOUT();
	void O_SETSTRINGOFFSET();
	void O_GETOBJDATA();
	void O_SETOBJDATA();
	void O_SWAPOBJECTS();
	void O_CHANGEHEROSET();
	void O_ADDSTRING();
	void O_SUBSTRING();
	void O_INITDIALOG();
	void O_ENABLEDIALOGOPT();
	void O_DISABLEDIALOGOPT();
	void O_SHOWDIALOGBOX();
	void O_STOPSAMPLE();
	void O_BACKANIMRANGE();
	void O_CLEARPATH();
	void O_SETPATH();
	void O_GETHEROX();
	void O_GETHEROY();
	void O_GETHEROD();
	void O_PUSHSTRING();
	void O_POPSTRING();
	void O_SETFGCODE();
	void O_STOPHERO();
	void O_ANIMUPDATEOFF();
	void O_ANIMUPDATEON();
	void O_FREECURSOR();
	void O_ADDINVQUIET();
	void O_RUNHERO();
	void O_SETBACKANIMDATA();
	void O_VIEWFLC();
	void O_CHECKFLCFRAME();
	void O_CHECKFLCEND();
	void O_FREEFLC();
	void O_TALKHEROSTOP();
	void O_HEROCOLOR();
	void O_GRABMAPA();
	void O_ENABLENAK();
	void O_DISABLENAK();
	void O_GETMOBNAME();
	void O_SWAPINVENTORY();
	void O_CLEARINVENTORY();
	void O_SKIPTEXT();
	void O_SETVOICEH();
	void O_SETVOICEA();
	void O_SETVOICEB();
	void O_SETVOICEC();
	void O_VIEWFLCLOOP();
	void O_FLCSPEED();
	void O_OPENINVENTORY();
	void O_KRZYWA();
	void O_GETKRZYWA();
	void O_GETMOB();
	void O_INPUTLINE();
	void O_SETVOICED();
	void O_BREAK_POINT();
};

}

#endif

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