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/* $Id$ */

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/** @file cheat.cpp Handling (loading/saving/initializing) of cheats. */

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#include "stdafx.h"

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#include "saveload.h"

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#include "cheat_type.h"

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Cheats _cheats;

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void InitializeCheats()

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{

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	memset(&_cheats, 0, sizeof(Cheats));

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}

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static void Save_CHTS()

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{

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	/* Cannot use lengthof because _cheats is of type Cheats, not Cheat */

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	byte count = sizeof(_cheats) / sizeof(Cheat);

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	Cheat *cht = (Cheat*) &_cheats;

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	Cheat *cht_last = &cht[count];

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	SlSetLength(count * 2);

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	for (; cht != cht_last; cht++) {

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		SlWriteByte(cht->been_used);

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		SlWriteByte(cht->value);

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	}

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}

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static void Load_CHTS()

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{

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	Cheat *cht = (Cheat*)&_cheats;

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	size_t count = SlGetFieldLength() / 2;

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	for (uint i = 0; i < count; i++) {

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		cht[i].been_used = (SlReadByte() != 0);

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		cht[i].value     = (SlReadByte() != 0);

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	}

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}

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bool CheatHasBeenUsed()

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{

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	/* Cannot use lengthof because _cheats is of type Cheats, not Cheat */

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	const Cheat* cht = (Cheat*)&_cheats;

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	const Cheat* cht_last = &cht[sizeof(_cheats) / sizeof(Cheat)];

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	for (; cht != cht_last; cht++) {

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		if (cht->been_used) return true;

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	}

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	return false;

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}

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extern const ChunkHandler _cheat_chunk_handlers[] = {

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	{ 'CHTS', Save_CHTS,     Load_CHTS,     CH_RIFF | CH_LAST}

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};