diff options
Diffstat (limited to 'src/save.c')
| -rw-r--r-- | src/save.c | 97 |
1 files changed, 71 insertions, 26 deletions
diff --git a/src/save.c b/src/save.c index 528c67145..81731692e 100644 --- a/src/save.c +++ b/src/save.c @@ -1,20 +1,76 @@ #include "global.h" #include "gba/flash_internal.h" #include "save.h" -#include "game_stat.h" +#include "constants/game_stat.h" #include "task.h" +#include "decompress.h" +#include "load_save.h" +#include "overworld.h" + +// for the chunk declarations extern struct SaveSectionLocation gRamSaveSectionLocations[0xE]; -extern u8 gDecompressionBuffer[]; -extern u32 gFlashMemoryPresent; extern u16 gUnknown_03006294; extern bool8 gSoftResetDisabled; +extern u32 gUnknown_0203CF5C; -extern const struct SaveSectionOffsets gSaveSectionOffsets[0xE]; +// 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: e-Reader/Mystery Gift Stuff (note: e-Reader is deprecated in Emerald US) + * 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) \ +} \ + +const struct SaveSectionOffsets gSaveSectionOffsets[] = +{ + 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), +}; extern void DoSaveFailedScreen(u8); // save_failed_screen -extern void LoadSerializedGame(void); // load_save extern bool32 ProgramFlashSectorAndVerify(u8 sector, u8 *data); +extern void save_serialize_map(void); +extern void sub_800ADF8(void); +extern bool8 sub_800A520(void); // iwram common u16 gLastWrittenSector; @@ -41,7 +97,7 @@ void ClearSaveData(void) } } -void ResetSaveCounters(void) +void Save_ResetSaveCounters(void) { gSaveCounter = 0; gLastWrittenSector = 0; @@ -600,11 +656,6 @@ void UpdateSaveAddresses(void) } } -extern u32 GetGameStat(u8 index); // rom4 -extern void IncrementGameStat(u8 index); // rom4 -extern void SaveSerializedGame(void); // load_save -extern u32 gUnknown_0203CF5C; - u8 HandleSavingData(u8 saveType) { u8 i; @@ -615,25 +666,25 @@ u8 HandleSavingData(u8 saveType) UpdateSaveAddresses(); switch (saveType) { - case HOF_DELETE_SAVE: // deletes HOF before overwriting HOF completely. unused + case SAVE_HALL_OF_FAME_ERASE_BEFORE: // deletes HOF before overwriting HOF completely. unused for (i = 0xE * 2 + 0; i < 32; i++) EraseFlashSector(i); - case HOF_SAVE: // hall of fame. + case SAVE_HALL_OF_FAME: // hall of fame. if (GetGameStat(GAME_STAT_ENTERED_HOF) < 999) IncrementGameStat(GAME_STAT_ENTERED_HOF); SaveSerializedGame(); save_write_to_flash(0xFFFF, gRamSaveSectionLocations); - tempAddr = (u8 *)0x201C000; // FIXME: make this a label. + tempAddr = gDecompressionBuffer; HandleWriteSectorNBytes(0x1C, tempAddr, 0xF80); HandleWriteSectorNBytes(0x1D, tempAddr + 0xF80, 0xF80); break; - case NORMAL_SAVE: // normal save. also called by overwriting your own save. + case SAVE_NORMAL: // normal save. also called by overwriting your own save. default: SaveSerializedGame(); save_write_to_flash(0xFFFF, gRamSaveSectionLocations); break; - case LINK_SAVE: // _081532C4 - case LINK2_SAVE: + case SAVE_LINK: // _081532C4 + case SAVE_LINK2: SaveSerializedGame(); for(i = 0; i < 5; i++) ClearSaveData_2(i, gRamSaveSectionLocations); @@ -647,7 +698,7 @@ u8 HandleSavingData(u8 saveType) save_write_to_flash(0, gRamSaveSectionLocations); break; */ - case DIFFERENT_FILE_SAVE: + case SAVE_OVERWRITE_DIFFERENT_FILE: for (i = (0xE * 2 + 0); i < 32; i++) EraseFlashSector(i); // erase HOF. SaveSerializedGame(); @@ -744,7 +795,7 @@ bool8 sub_8153474(void) return retVal; } -u8 sub_81534D0(u8 a1) +u8 Save_LoadGameData(u8 a1) { u8 result; @@ -780,7 +831,7 @@ u16 sub_815355C(void) struct SaveSection* savSection; savSection = gFastSaveSection = &gSaveDataBuffer; - if (gFlashMemoryPresent != 1) + if (gFlashMemoryPresent != TRUE) return 0; UpdateSaveAddresses(); GetSaveValidStatus(gRamSaveSectionLocations); @@ -841,12 +892,6 @@ u32 sub_8153634(u8 sector, u8* src) return 1; } -extern void save_serialize_map(void); -extern void sub_8076D5C(void); -extern void sav2_gender2_inplace_and_xFE(void); -extern void sub_800ADF8(void); -extern bool8 sub_800A520(void); - void sub_8153688(u8 taskId) { s16* taskData = gTasks[taskId].data; |