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pokeemerald/src/save.c
GriffinR 4911849723 Document link contest connection
2020-08-13 16:27:40 -04:00

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#include "global.h"
#include "agb_flash.h"
#include "gba/flash_internal.h"
#include "fieldmap.h"
#include "save.h"
#include "task.h"
#include "decompress.h"
#include "load_save.h"
#include "overworld.h"
#include "pokemon_storage_system.h"
#include "main.h"
#include "trainer_hill.h"
#include "link.h"
#include "constants/game_stat.h"
static u16 CalculateChecksum(void *data, u16 size);
static bool8 DoReadFlashWholeSection(u8 sector, struct SaveSection *section);
static u8 GetSaveValidStatus(const struct SaveSectionLocation *location);
static u8 sub_8152E10(u16 a1, const struct SaveSectionLocation *location);
static u8 ClearSaveData_2(u16 a1, const struct SaveSectionLocation *location);
static u8 TryWriteSector(u8 sector, u8 *data);
static u8 HandleWriteSector(u16 a1, const struct SaveSectionLocation *location);
// Divide save blocks into individual chunks to be written to flash sectors
// Each 4 KiB flash sector contains 3968 bytes of actual data followed by a 128 byte footer
#define SECTOR_DATA_SIZE 3968
#define SECTOR_FOOTER_SIZE 128
/*
* Sector Layout:
*
* Sectors 0 - 13: Save Slot 1
* Sectors 14 - 27: Save Slot 2
* Sectors 28 - 29: Hall of Fame
* Sector 30: Trainer Hill
* Sector 31: Recorded Battle
*
* There are two save slots for saving the player's game data. We alternate between
* them each time the game is saved, so that if the current save slot is corrupt,
* we can load the previous one. We also rotate the sectors in each save slot
* so that the same data is not always being written to the same sector. This
* might be done to reduce wear on the flash memory, but I'm not sure, since all
* 14 sectors get written anyway.
*/
// (u8 *)structure was removed from the first statement of the macro in Emerald.
// This is because malloc is used to allocate addresses so storing the raw
// addresses should not be done in the offsets information.
#define SAVEBLOCK_CHUNK(structure, chunkNum) \
{ \
chunkNum * SECTOR_DATA_SIZE, \
min(sizeof(structure) - chunkNum * SECTOR_DATA_SIZE, SECTOR_DATA_SIZE) \
} \
static const struct SaveSectionOffsets sSaveSectionOffsets[] =
{
SAVEBLOCK_CHUNK(gSaveblock2, 0),
SAVEBLOCK_CHUNK(gSaveblock1, 0),
SAVEBLOCK_CHUNK(gSaveblock1, 1),
SAVEBLOCK_CHUNK(gSaveblock1, 2),
SAVEBLOCK_CHUNK(gSaveblock1, 3),
SAVEBLOCK_CHUNK(gPokemonStorage, 0),
SAVEBLOCK_CHUNK(gPokemonStorage, 1),
SAVEBLOCK_CHUNK(gPokemonStorage, 2),
SAVEBLOCK_CHUNK(gPokemonStorage, 3),
SAVEBLOCK_CHUNK(gPokemonStorage, 4),
SAVEBLOCK_CHUNK(gPokemonStorage, 5),
SAVEBLOCK_CHUNK(gPokemonStorage, 6),
SAVEBLOCK_CHUNK(gPokemonStorage, 7),
SAVEBLOCK_CHUNK(gPokemonStorage, 8),
};
// iwram common
u16 gLastWrittenSector;
u32 gLastSaveCounter;
u16 gLastKnownGoodSector;
u32 gDamagedSaveSectors;
u32 gSaveCounter;
struct SaveSection *gFastSaveSection;
u16 gUnknown_03006208;
u16 gSaveUnusedVar;
u16 gSaveFileStatus;
void (*gGameContinueCallback)(void);
struct SaveSectionLocation gRamSaveSectionLocations[SECTOR_SAVE_SLOT_LENGTH];
u16 gSaveUnusedVar2;
u16 gSaveAttemptStatus;
EWRAM_DATA struct SaveSection gSaveDataBuffer = {0};
EWRAM_DATA static u8 sUnusedVar = 0;
void ClearSaveData(void)
{
u16 i;
for (i = 0; i < NUM_SECTORS_PER_SLOT; i++)
{
EraseFlashSector(i);
EraseFlashSector(i + NUM_SECTORS_PER_SLOT); // clear slot 2.
}
}
void Save_ResetSaveCounters(void)
{
gSaveCounter = 0;
gLastWrittenSector = 0;
gDamagedSaveSectors = 0;
}
static bool32 SetDamagedSectorBits(u8 op, u8 bit)
{
bool32 retVal = FALSE;
switch (op)
{
case ENABLE:
gDamagedSaveSectors |= (1 << bit);
break;
case DISABLE:
gDamagedSaveSectors &= ~(1 << bit);
break;
case CHECK: // unused
if (gDamagedSaveSectors & (1 << bit))
retVal = TRUE;
break;
}
return retVal;
}
static u8 SaveWriteToFlash(u16 a1, const struct SaveSectionLocation *location)
{
u32 status;
u16 i;
gFastSaveSection = &gSaveDataBuffer;
if (a1 != 0xFFFF) // for link
{
status = HandleWriteSector(a1, location);
}
else
{
gLastKnownGoodSector = gLastWrittenSector; // backup the current written sector before attempting to write.
gLastSaveCounter = gSaveCounter;
gLastWrittenSector++;
gLastWrittenSector = gLastWrittenSector % SECTOR_SAVE_SLOT_LENGTH; // array count save sector locations
gSaveCounter++;
status = SAVE_STATUS_OK;
for (i = 0; i < SECTOR_SAVE_SLOT_LENGTH; i++)
HandleWriteSector(i, location);
if (gDamagedSaveSectors != 0) // skip the damaged sector.
{
status = SAVE_STATUS_ERROR;
gLastWrittenSector = gLastKnownGoodSector;
gSaveCounter = gLastSaveCounter;
}
}
return status;
}
static u8 HandleWriteSector(u16 sectorId, const struct SaveSectionLocation *location)
{
u16 i;
u16 sector;
u8 *data;
u16 size;
sector = sectorId + gLastWrittenSector;
sector %= SECTOR_SAVE_SLOT_LENGTH;
sector += SECTOR_SAVE_SLOT_LENGTH * (gSaveCounter % 2);
data = location[sectorId].data;
size = location[sectorId].size;
// clear save section.
for (i = 0; i < sizeof(struct SaveSection); i++)
((char *)gFastSaveSection)[i] = 0;
gFastSaveSection->id = sectorId;
gFastSaveSection->security = UNKNOWN_CHECK_VALUE;
gFastSaveSection->counter = gSaveCounter;
for (i = 0; i < size; i++)
gFastSaveSection->data[i] = data[i];
gFastSaveSection->checksum = CalculateChecksum(data, size);
return TryWriteSector(sector, gFastSaveSection->data);
}
static u8 HandleWriteSectorNBytes(u8 sector, u8 *data, u16 size)
{
u16 i;
struct SaveSection *section = &gSaveDataBuffer;
for (i = 0; i < sizeof(struct SaveSection); i++)
((char *)section)[i] = 0;
section->security = UNKNOWN_CHECK_VALUE;
for (i = 0; i < size; i++)
section->data[i] = data[i];
section->id = CalculateChecksum(data, size); // though this appears to be incorrect, it might be some sector checksum instead of a whole save checksum and only appears to be relevent to HOF data, if used.
return TryWriteSector(sector, section->data);
}
static u8 TryWriteSector(u8 sector, u8 *data)
{
if (ProgramFlashSectorAndVerify(sector, data) != 0) // is damaged?
{
SetDamagedSectorBits(ENABLE, sector); // set damaged sector bits.
return SAVE_STATUS_ERROR;
}
else
{
SetDamagedSectorBits(DISABLE, sector); // unset damaged sector bits. it's safe now.
return SAVE_STATUS_OK;
}
}
static u32 RestoreSaveBackupVarsAndIncrement(const struct SaveSectionLocation *location) // location is unused
{
gFastSaveSection = &gSaveDataBuffer;
gLastKnownGoodSector = gLastWrittenSector;
gLastSaveCounter = gSaveCounter;
gLastWrittenSector++;
gLastWrittenSector %= SECTOR_SAVE_SLOT_LENGTH;
gSaveCounter++;
gUnknown_03006208 = 0;
gDamagedSaveSectors = 0;
return 0;
}
static u32 RestoreSaveBackupVars(const struct SaveSectionLocation *location) // only ever called once, and gSaveBlock2 is passed to this function. location is unused
{
gFastSaveSection = &gSaveDataBuffer;
gLastKnownGoodSector = gLastWrittenSector;
gLastSaveCounter = gSaveCounter;
gUnknown_03006208 = 0;
gDamagedSaveSectors = 0;
return 0;
}
static u8 sub_81529D4(u16 sectorId, const struct SaveSectionLocation *location)
{
u8 status;
if (gUnknown_03006208 < sectorId - 1)
{
status = SAVE_STATUS_OK;
HandleWriteSector(gUnknown_03006208, location);
gUnknown_03006208++;
if (gDamagedSaveSectors)
{
status = SAVE_STATUS_ERROR;
gLastWrittenSector = gLastKnownGoodSector;
gSaveCounter = gLastSaveCounter;
}
}
else
{
status = SAVE_STATUS_ERROR;
}
return status;
}
static u8 sub_8152A34(u16 sectorId, const struct SaveSectionLocation *location)
{
u8 status = SAVE_STATUS_OK;
ClearSaveData_2(sectorId - 1, location);
if (gDamagedSaveSectors)
{
status = SAVE_STATUS_ERROR;
gLastWrittenSector = gLastKnownGoodSector;
gSaveCounter = gLastSaveCounter;
}
return status;
}
static u8 ClearSaveData_2(u16 sectorId, const struct SaveSectionLocation *location)
{
u16 i;
u16 sector;
u8 *data;
u16 size;
u8 status;
sector = sectorId + gLastWrittenSector;
sector %= SECTOR_SAVE_SLOT_LENGTH;
sector += SECTOR_SAVE_SLOT_LENGTH * (gSaveCounter % 2);
data = location[sectorId].data;
size = location[sectorId].size;
// clear temp save section.
for (i = 0; i < sizeof(struct SaveSection); i++)
((char *)gFastSaveSection)[i] = 0;
gFastSaveSection->id = sectorId;
gFastSaveSection->security = UNKNOWN_CHECK_VALUE;
gFastSaveSection->counter = gSaveCounter;
// set temp section's data.
for (i = 0; i < size; i++)
gFastSaveSection->data[i] = data[i];
// calculate checksum.
gFastSaveSection->checksum = CalculateChecksum(data, size);
EraseFlashSector(sector);
status = SAVE_STATUS_OK;
for (i = 0; i < sizeof(struct UnkSaveSection); i++)
{
if (ProgramFlashByte(sector, i, ((u8 *)gFastSaveSection)[i]))
{
status = SAVE_STATUS_ERROR;
break;
}
}
if (status == SAVE_STATUS_ERROR)
{
SetDamagedSectorBits(ENABLE, sector);
return SAVE_STATUS_ERROR;
}
else
{
status = SAVE_STATUS_OK;
for (i = 0; i < 7; i++)
{
if (ProgramFlashByte(sector, 0xFF9 + i, ((u8 *)gFastSaveSection)[0xFF9 + i]))
{
status = SAVE_STATUS_ERROR;
break;
}
}
if (status == SAVE_STATUS_ERROR)
{
SetDamagedSectorBits(ENABLE, sector);
return SAVE_STATUS_ERROR;
}
else
{
SetDamagedSectorBits(DISABLE, sector);
return SAVE_STATUS_OK;
}
}
}
static u8 sav12_xor_get(u16 sectorId, const struct SaveSectionLocation *location)
{
u16 sector;
sector = sectorId + gLastWrittenSector; // no sub 1?
sector %= SECTOR_SAVE_SLOT_LENGTH;
sector += SECTOR_SAVE_SLOT_LENGTH * (gSaveCounter % 2);
if (ProgramFlashByte(sector, sizeof(struct UnkSaveSection), 0x25))
{
// sector is damaged, so enable the bit in gDamagedSaveSectors and restore the last written sector and save counter.
SetDamagedSectorBits(ENABLE, sector);
gLastWrittenSector = gLastKnownGoodSector;
gSaveCounter = gLastSaveCounter;
return SAVE_STATUS_ERROR;
}
else
{
SetDamagedSectorBits(DISABLE, sector);
return SAVE_STATUS_OK;
}
}
static u8 sub_8152CAC(u16 sectorId, const struct SaveSectionLocation *location)
{
u16 sector;
sector = sectorId + gLastWrittenSector - 1;
sector %= SECTOR_SAVE_SLOT_LENGTH;
sector += SECTOR_SAVE_SLOT_LENGTH * (gSaveCounter % 2);
if (ProgramFlashByte(sector, sizeof(struct UnkSaveSection), ((u8 *)gFastSaveSection)[sizeof(struct UnkSaveSection)]))
{
// sector is damaged, so enable the bit in gDamagedSaveSectors and restore the last written sector and save counter.
SetDamagedSectorBits(ENABLE, sector);
gLastWrittenSector = gLastKnownGoodSector;
gSaveCounter = gLastSaveCounter;
return SAVE_STATUS_ERROR;
}
else
{
SetDamagedSectorBits(DISABLE, sector);
return SAVE_STATUS_OK;
}
}
static u8 sub_8152D44(u16 sectorId, const struct SaveSectionLocation *location)
{
u16 sector;
sector = sectorId + gLastWrittenSector - 1; // no sub 1?
sector %= SECTOR_SAVE_SLOT_LENGTH;
sector += SECTOR_SAVE_SLOT_LENGTH * (gSaveCounter % 2);
if (ProgramFlashByte(sector, sizeof(struct UnkSaveSection), 0x25))
{
// sector is damaged, so enable the bit in gDamagedSaveSectors and restore the last written sector and save counter.
SetDamagedSectorBits(ENABLE, sector);
gLastWrittenSector = gLastKnownGoodSector;
gSaveCounter = gLastSaveCounter;
return SAVE_STATUS_ERROR;
}
else
{
SetDamagedSectorBits(DISABLE, sector);
return SAVE_STATUS_OK;
}
}
static u8 sub_8152DD0(u16 a1, const struct SaveSectionLocation *location)
{
u8 status;
gFastSaveSection = &gSaveDataBuffer;
if (a1 != 0xFFFF)
{
status = SAVE_STATUS_ERROR;
}
else
{
status = GetSaveValidStatus(location);
sub_8152E10(0xFFFF, location);
}
return status;
}
static u8 sub_8152E10(u16 a1, const struct SaveSectionLocation *location)
{
u16 i;
u16 checksum;
u16 v3 = SECTOR_SAVE_SLOT_LENGTH * (gSaveCounter % 2);
u16 id;
for (i = 0; i < SECTOR_SAVE_SLOT_LENGTH; i++)
{
DoReadFlashWholeSection(i + v3, gFastSaveSection);
id = gFastSaveSection->id;
if (id == 0)
gLastWrittenSector = i;
checksum = CalculateChecksum(gFastSaveSection->data, location[id].size);
if (gFastSaveSection->security == UNKNOWN_CHECK_VALUE
&& gFastSaveSection->checksum == checksum)
{
u16 j;
for (j = 0; j < location[id].size; j++)
((u8 *)location[id].data)[j] = gFastSaveSection->data[j];
}
}
return SAVE_STATUS_OK;
}
static u8 GetSaveValidStatus(const struct SaveSectionLocation *location)
{
u16 i;
u16 checksum;
u32 saveSlot1Counter = 0;
u32 saveSlot2Counter = 0;
u32 slotCheckField = 0;
bool8 securityPassed = FALSE;
u8 saveSlot1Status;
u8 saveSlot2Status;
// check save slot 1.
for (i = 0; i < SECTOR_SAVE_SLOT_LENGTH; i++)
{
DoReadFlashWholeSection(i, gFastSaveSection);
if (gFastSaveSection->security == UNKNOWN_CHECK_VALUE)
{
securityPassed = TRUE;
checksum = CalculateChecksum(gFastSaveSection->data, location[gFastSaveSection->id].size);
if (gFastSaveSection->checksum == checksum)
{
saveSlot1Counter = gFastSaveSection->counter;
slotCheckField |= 1 << gFastSaveSection->id;
}
}
}
if (securityPassed)
{
if (slotCheckField == 0x3FFF)
saveSlot1Status = SAVE_STATUS_OK;
else
saveSlot1Status = SAVE_STATUS_ERROR;
}
else
{
saveSlot1Status = SAVE_STATUS_EMPTY;
}
slotCheckField = 0;
securityPassed = FALSE;
// check save slot 2.
for (i = 0; i < SECTOR_SAVE_SLOT_LENGTH; i++)
{
DoReadFlashWholeSection(i + SECTOR_SAVE_SLOT_LENGTH, gFastSaveSection);
if (gFastSaveSection->security == UNKNOWN_CHECK_VALUE)
{
securityPassed = TRUE;
checksum = CalculateChecksum(gFastSaveSection->data, location[gFastSaveSection->id].size);
if (gFastSaveSection->checksum == checksum)
{
saveSlot2Counter = gFastSaveSection->counter;
slotCheckField |= 1 << gFastSaveSection->id;
}
}
}
if (securityPassed)
{
if (slotCheckField == 0x3FFF)
saveSlot2Status = SAVE_STATUS_OK;
else
saveSlot2Status = SAVE_STATUS_ERROR;
}
else
{
saveSlot2Status = SAVE_STATUS_EMPTY;
}
if (saveSlot1Status == SAVE_STATUS_OK && saveSlot2Status == SAVE_STATUS_OK)
{
if ((saveSlot1Counter == -1 && saveSlot2Counter == 0) || (saveSlot1Counter == 0 && saveSlot2Counter == -1))
{
if ((unsigned)(saveSlot1Counter + 1) < (unsigned)(saveSlot2Counter + 1))
gSaveCounter = saveSlot2Counter;
else
gSaveCounter = saveSlot1Counter;
}
else
{
if (saveSlot1Counter < saveSlot2Counter)
gSaveCounter = saveSlot2Counter;
else
gSaveCounter = saveSlot1Counter;
}
return SAVE_STATUS_OK;
}
if (saveSlot1Status == SAVE_STATUS_OK)
{
gSaveCounter = saveSlot1Counter;
if (saveSlot2Status == SAVE_STATUS_ERROR)
return SAVE_STATUS_ERROR;
return SAVE_STATUS_OK;
}
if (saveSlot2Status == SAVE_STATUS_OK)
{
gSaveCounter = saveSlot2Counter;
if (saveSlot1Status == SAVE_STATUS_ERROR)
return SAVE_STATUS_ERROR;
return SAVE_STATUS_OK;
}
if (saveSlot1Status == SAVE_STATUS_EMPTY && saveSlot2Status == SAVE_STATUS_EMPTY)
{
gSaveCounter = 0;
gLastWrittenSector = 0;
return SAVE_STATUS_EMPTY;
}
gSaveCounter = 0;
gLastWrittenSector = 0;
return SAVE_STATUS_CORRUPT;
}
static u8 sub_81530DC(u8 sectorId, u8 *data, u16 size)
{
u16 i;
struct SaveSection *section = &gSaveDataBuffer;
DoReadFlashWholeSection(sectorId, section);
if (section->security == UNKNOWN_CHECK_VALUE)
{
u16 checksum = CalculateChecksum(section->data, size);
if (section->id == checksum)
{
for (i = 0; i < size; i++)
data[i] = section->data[i];
return SAVE_STATUS_OK;
}
else
{
return SAVE_STATUS_CORRUPT;
}
}
else
{
return SAVE_STATUS_EMPTY;
}
}
// Return value always ignored
static bool8 DoReadFlashWholeSection(u8 sector, struct SaveSection *section)
{
ReadFlash(sector, 0, section->data, sizeof(struct SaveSection));
return TRUE;
}
static u16 CalculateChecksum(void *data, u16 size)
{
u16 i;
u32 checksum = 0;
for (i = 0; i < (size / 4); i++)
{
checksum += *((u32 *)data);
data += sizeof(u32);
}
return ((checksum >> 16) + checksum);
}
static void UpdateSaveAddresses(void)
{
int i = 0;
gRamSaveSectionLocations[i].data = (void*)(gSaveBlock2Ptr) + sSaveSectionOffsets[i].toAdd;
gRamSaveSectionLocations[i].size = sSaveSectionOffsets[i].size;
for (i = SECTOR_ID_SAVEBLOCK1_START; i <= SECTOR_ID_SAVEBLOCK1_END; i++)
{
gRamSaveSectionLocations[i].data = (void*)(gSaveBlock1Ptr) + sSaveSectionOffsets[i].toAdd;
gRamSaveSectionLocations[i].size = sSaveSectionOffsets[i].size;
}
for (i = SECTOR_ID_PKMN_STORAGE_START; i <= SECTOR_ID_PKMN_STORAGE_END; i++)
{
gRamSaveSectionLocations[i].data = (void*)(gPokemonStoragePtr) + sSaveSectionOffsets[i].toAdd;
gRamSaveSectionLocations[i].size = sSaveSectionOffsets[i].size;
i++;i--; // needed to match
}
}
u8 HandleSavingData(u8 saveType)
{
u8 i;
u32 *backupVar = gTrainerHillVBlankCounter;
u8 *tempAddr;
gTrainerHillVBlankCounter = NULL;
UpdateSaveAddresses();
switch (saveType)
{
case SAVE_HALL_OF_FAME_ERASE_BEFORE: // deletes HOF before overwriting HOF completely. unused
for (i = SECTOR_ID_HOF_1; i < SECTORS_COUNT; i++)
EraseFlashSector(i);
case SAVE_HALL_OF_FAME: // hall of fame.
if (GetGameStat(GAME_STAT_ENTERED_HOF) < 999)
IncrementGameStat(GAME_STAT_ENTERED_HOF);
SaveSerializedGame();
SaveWriteToFlash(0xFFFF, gRamSaveSectionLocations);
tempAddr = gDecompressionBuffer;
HandleWriteSectorNBytes(SECTOR_ID_HOF_1, tempAddr, SECTOR_DATA_SIZE);
HandleWriteSectorNBytes(SECTOR_ID_HOF_2, tempAddr + SECTOR_DATA_SIZE, SECTOR_DATA_SIZE);
break;
case SAVE_NORMAL: // normal save. also called by overwriting your own save.
default:
SaveSerializedGame();
SaveWriteToFlash(0xFFFF, gRamSaveSectionLocations);
break;
case SAVE_LINK: // Link and Battle Frontier
case SAVE_LINK2: // Unused
SaveSerializedGame();
for(i = SECTOR_ID_SAVEBLOCK2; i <= SECTOR_ID_SAVEBLOCK1_END; i++)
ClearSaveData_2(i, gRamSaveSectionLocations);
for(i = SECTOR_ID_SAVEBLOCK2; i <= SECTOR_ID_SAVEBLOCK1_END; i++)
sav12_xor_get(i, gRamSaveSectionLocations);
break;
// Support for Ereader was removed in Emerald.
/*
case EREADER_SAVE: // used in mossdeep "game corner" before/after battling old man e-reader trainer
SaveSerializedGame();
SaveWriteToFlash(0, gRamSaveSectionLocations);
break;
*/
case SAVE_OVERWRITE_DIFFERENT_FILE:
for (i = SECTOR_ID_HOF_1; i < SECTORS_COUNT; i++)
EraseFlashSector(i); // erase HOF.
SaveSerializedGame();
SaveWriteToFlash(0xFFFF, gRamSaveSectionLocations);
break;
}
gTrainerHillVBlankCounter = backupVar;
return 0;
}
u8 TrySavingData(u8 saveType)
{
if (gFlashMemoryPresent != TRUE)
{
gSaveAttemptStatus = SAVE_STATUS_ERROR;
return SAVE_STATUS_ERROR;
}
HandleSavingData(saveType);
if (!gDamagedSaveSectors)
{
gSaveAttemptStatus = SAVE_STATUS_OK;
return SAVE_STATUS_OK;
}
else
{
DoSaveFailedScreen(saveType);
gSaveAttemptStatus = SAVE_STATUS_ERROR;
return SAVE_STATUS_ERROR;
}
}
bool8 sub_8153380(void) // trade.c
{
if (gFlashMemoryPresent != TRUE)
return TRUE;
UpdateSaveAddresses();
SaveSerializedGame();
RestoreSaveBackupVarsAndIncrement(gRamSaveSectionLocations);
return FALSE;
}
bool8 sub_81533AC(void) // trade.c
{
u8 status = sub_81529D4(SECTOR_SAVE_SLOT_LENGTH, gRamSaveSectionLocations);
if (gDamagedSaveSectors)
DoSaveFailedScreen(SAVE_NORMAL);
if (status == SAVE_STATUS_ERROR)
return TRUE;
else
return FALSE;
}
bool8 sub_81533E0(void) // trade.c
{
sub_8152A34(SECTOR_SAVE_SLOT_LENGTH, gRamSaveSectionLocations);
if (gDamagedSaveSectors)
DoSaveFailedScreen(SAVE_NORMAL);
return FALSE;
}
bool8 sub_8153408(void) // trade.c
{
sub_8152CAC(SECTOR_SAVE_SLOT_LENGTH, gRamSaveSectionLocations);
if (gDamagedSaveSectors)
DoSaveFailedScreen(SAVE_NORMAL);
return FALSE;
}
u8 FullSaveGame(void)
{
if (gFlashMemoryPresent != TRUE)
return TRUE;
UpdateSaveAddresses();
SaveSerializedGame();
RestoreSaveBackupVars(gRamSaveSectionLocations);
sub_8152A34(gUnknown_03006208 + 1, gRamSaveSectionLocations);
return FALSE;
}
bool8 CheckSaveFile(void)
{
u8 retVal = FALSE;
u16 sectorId = ++gUnknown_03006208;
if (sectorId <= SECTOR_ID_SAVEBLOCK1_END)
{
sub_8152A34(gUnknown_03006208 + 1, gRamSaveSectionLocations);
sub_8152D44(sectorId, gRamSaveSectionLocations);
}
else
{
sub_8152D44(sectorId, gRamSaveSectionLocations);
retVal = TRUE;
}
if (gDamagedSaveSectors)
DoSaveFailedScreen(SAVE_LINK);
return retVal;
}
u8 Save_LoadGameData(u8 saveType)
{
u8 status;
if (gFlashMemoryPresent != TRUE)
{
gSaveFileStatus = SAVE_STATUS_NO_FLASH;
return SAVE_STATUS_ERROR;
}
UpdateSaveAddresses();
switch (saveType)
{
case SAVE_NORMAL:
default:
status = sub_8152DD0(0xFFFF, gRamSaveSectionLocations);
LoadSerializedGame();
gSaveFileStatus = status;
gGameContinueCallback = 0;
break;
case SAVE_HALL_OF_FAME:
status = sub_81530DC(SECTOR_ID_HOF_1, gDecompressionBuffer, SECTOR_DATA_SIZE);
if (status == SAVE_STATUS_OK)
status = sub_81530DC(SECTOR_ID_HOF_2, gDecompressionBuffer + SECTOR_DATA_SIZE, SECTOR_DATA_SIZE);
break;
}
return status;
}
u16 sub_815355C(void)
{
u16 i, v3;
struct SaveSection* savSection;
savSection = gFastSaveSection = &gSaveDataBuffer;
if (gFlashMemoryPresent != TRUE)
return SAVE_STATUS_EMPTY;
UpdateSaveAddresses();
GetSaveValidStatus(gRamSaveSectionLocations);
v3 = SECTOR_SAVE_SLOT_LENGTH * (gSaveCounter % 2);
for (i = 0; i < SECTOR_SAVE_SLOT_LENGTH; i++)
{
DoReadFlashWholeSection(i + v3, gFastSaveSection);
if (gFastSaveSection->id == 0)
return savSection->data[10] +
savSection->data[11] +
savSection->data[12] +
savSection->data[13];
}
return SAVE_STATUS_EMPTY;
}
u32 TryReadSpecialSaveSection(u8 sector, u8* dst)
{
s32 i;
s32 size;
u8* savData;
if (sector != SECTOR_ID_TRAINER_HILL && sector != SECTOR_ID_RECORDED_BATTLE)
return SAVE_STATUS_ERROR;
ReadFlash(sector, 0, (u8 *)&gSaveDataBuffer, sizeof(struct SaveSection));
if (*(u32*)(&gSaveDataBuffer.data[0]) != SPECIAL_SECTION_SENTINEL)
return SAVE_STATUS_ERROR;
// copies whole save section except u32 counter
i = 0;
size = 0xFFB;
savData = &gSaveDataBuffer.data[4];
for (; i <= size; i++)
dst[i] = savData[i];
return SAVE_STATUS_OK;
}
u32 TryWriteSpecialSaveSection(u8 sector, u8* src)
{
s32 i;
s32 size;
u8* savData;
void* savDataBuffer;
if (sector != SECTOR_ID_TRAINER_HILL && sector != SECTOR_ID_RECORDED_BATTLE)
return SAVE_STATUS_ERROR;
savDataBuffer = &gSaveDataBuffer;
*(u32*)(savDataBuffer) = SPECIAL_SECTION_SENTINEL;
// copies whole save section except u32 counter
i = 0;
size = 0xFFB;
savData = &gSaveDataBuffer.data[4];
for (; i <= size; i++)
savData[i] = src[i];
if (ProgramFlashSectorAndVerify(sector, savDataBuffer) != 0)
return SAVE_STATUS_ERROR;
return SAVE_STATUS_OK;
}
#define tState data[0]
#define tTimer data[1]
#define tPartialSave data[2]
void Task_LinkSave(u8 taskId)
{
s16* data = gTasks[taskId].data;
switch (tState)
{
case 0:
gSoftResetDisabled = TRUE;
tState = 1;
break;
case 1:
SetLinkStandbyCallback();
tState = 2;
break;
case 2:
if (IsLinkTaskFinished())
{
if (!tPartialSave)
save_serialize_map();
tState = 3;
}
break;
case 3:
if (!tPartialSave)
SetContinueGameWarpStatusToDynamicWarp();
sub_8153380();
tState = 4;
break;
case 4:
if (++tTimer == 5)
{
tTimer = 0;
tState = 5;
}
break;
case 5:
if (sub_81533AC())
tState = 6;
else
tState = 4;
break;
case 6:
sub_81533E0();
tState = 7;
break;
case 7:
if (!tPartialSave)
ClearContinueGameWarpStatus2();
SetLinkStandbyCallback();
tState = 8;
break;
case 8:
if (IsLinkTaskFinished())
{
sub_8153408();
tState = 9;
}
break;
case 9:
SetLinkStandbyCallback();
tState = 10;
break;
case 10:
if (IsLinkTaskFinished())
tState++;
break;
case 11:
if (++tTimer > 5)
{
gSoftResetDisabled = FALSE;
DestroyTask(taskId);
}
break;
}
}
#undef tState
#undef tTimer
#undef tPartialSave
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