cheat.cpp

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/* $Id: cheat.cpp 13301 2008-05-27 21:41:00Z rubidium $ */

#include "stdafx.h"
#include "saveload.h"
#include "cheat_type.h"

Cheats _cheats;

void InitializeCheats()
{
  memset(&_cheats, 0, sizeof(Cheats));
}

static void Save_CHTS()
{
  /* Cannot use lengthof because _cheats is of type Cheats, not Cheat */
  byte count = sizeof(_cheats) / sizeof(Cheat);
  Cheat *cht = (Cheat*) &_cheats;
  Cheat *cht_last = &cht[count];

  SlSetLength(count * 2);
  for (; cht != cht_last; cht++) {
    SlWriteByte(cht->been_used);
    SlWriteByte(cht->value);
  }
}

static void Load_CHTS()
{
  Cheat *cht = (Cheat*)&_cheats;
  size_t count = SlGetFieldLength() / 2;

  for (uint i = 0; i < count; i++) {
    cht[i].been_used = (SlReadByte() != 0);
    cht[i].value     = (SlReadByte() != 0);
  }
}

bool CheatHasBeenUsed()
{
  /* Cannot use lengthof because _cheats is of type Cheats, not Cheat */
  const Cheat* cht = (Cheat*)&_cheats;
  const Cheat* cht_last = &cht[sizeof(_cheats) / sizeof(Cheat)];

  for (; cht != cht_last; cht++) {
    if (cht->been_used) return true;
  }

  return false;
}


extern const ChunkHandler _cheat_chunk_handlers[] = {
  { 'CHTS', Save_CHTS,     Load_CHTS,     CH_RIFF | CH_LAST}
};