diff options
Diffstat (limited to 'src/saveload/saveload.cpp')
| -rw-r--r-- | src/saveload/saveload.cpp | 119 |
1 files changed, 83 insertions, 36 deletions
diff --git a/src/saveload/saveload.cpp b/src/saveload/saveload.cpp index e7091b6bf..c0b6561c2 100644 --- a/src/saveload/saveload.cpp +++ b/src/saveload/saveload.cpp @@ -56,6 +56,7 @@ typedef size_t ReaderProc(); enum SaveLoadAction { SLA_LOAD, ///< loading SLA_SAVE, ///< saving + SLA_PTRS, ///< fixing pointers }; enum NeedLength { @@ -564,6 +565,7 @@ static void SlSaveLoadConv(void *ptr, VarType conv) WriteValue(ptr, conv, x); break; } + case SLA_PTRS: break; default: NOT_REACHED(); } } @@ -671,6 +673,7 @@ static void SlString(void *ptr, size_t length, VarType conv) str_validate((char *)ptr, (char *)ptr + len); break; } + case SLA_PTRS: break; default: NOT_REACHED(); } } @@ -693,6 +696,8 @@ static inline size_t SlCalcArrayLen(size_t length, VarType conv) */ void SlArray(void *array, size_t length, VarType conv) { + if (_sl.action == SLA_PTRS) return; + /* Automatically calculate the length? */ if (_sl.need_length != NL_NONE) { SlSetLength(SlCalcArrayLen(length, conv)); @@ -767,13 +772,14 @@ void SlList(void *list, SLRefType conv) if (_sl.need_length == NL_CALCLENGTH) return; } - std::list<void *> *l = (std::list<void *> *) list; + typedef std::list<void *> PtrList; + PtrList *l = (PtrList *)list; switch (_sl.action) { case SLA_SAVE: { SlWriteUint32((uint32)l->size()); - std::list<void *>::iterator iter; + PtrList::iterator iter; for (iter = l->begin(); iter != l->end(); ++iter) { void *ptr = *iter; SlWriteUint32(ReferenceToInt(ptr, conv)); @@ -785,7 +791,18 @@ void SlList(void *list, SLRefType conv) /* Load each reference and push to the end of the list */ for (uint i = 0; i < length; i++) { - void *ptr = IntToReference(CheckSavegameVersion(69) ? SlReadUint16() : SlReadUint32(), conv); + size_t data = CheckSavegameVersion(69) ? SlReadUint16() : SlReadUint32(); + l->push_back((void *)data); + } + break; + } + case SLA_PTRS: { + PtrList temp = *l; + + l->clear(); + PtrList::iterator iter; + for (iter = temp.begin(); iter != temp.end(); ++iter) { + void *ptr = IntToReference((size_t)*iter, conv); l->push_back(ptr); } break; @@ -885,7 +902,10 @@ bool SlObjectMember(void *ptr, const SaveLoad *sld) SlWriteUint32(ReferenceToInt(*(void **)ptr, (SLRefType)conv)); break; case SLA_LOAD: - *(void **)ptr = IntToReference(CheckSavegameVersion(69) ? SlReadUint16() : SlReadUint32(), (SLRefType)conv); + *(size_t *)ptr = (size_t)(CheckSavegameVersion(69) ? SlReadUint16() : SlReadUint32()); + break; + case SLA_PTRS: + *(void **)ptr = IntToReference(*(size_t *)ptr, (SLRefType)conv); break; default: NOT_REACHED(); } @@ -906,6 +926,7 @@ bool SlObjectMember(void *ptr, const SaveLoad *sld) switch (_sl.action) { case SLA_SAVE: SlWriteByte(sld->version_to); break; case SLA_LOAD: *(byte *)ptr = sld->version_from; break; + case SLA_PTRS: break; default: NOT_REACHED(); } break; @@ -1116,6 +1137,33 @@ static void SlLoadChunks() } } +/** Fix all pointers (convert index -> pointer) */ +static void SlFixPointers() +{ + const ChunkHandler *ch; + const ChunkHandler * const *chsc; + + _sl.action = SLA_PTRS; + + DEBUG(sl, 1, "Fixing pointers"); + + for (chsc = _sl.chs; (ch = *chsc++) != NULL;) { + while (true) { + if (ch->ptrs_proc != NULL) { + DEBUG(sl, 2, "Fixing pointers for %c%c%c%c", ch->id >> 24, ch->id >> 16, ch->id >> 8, ch->id); + ch->ptrs_proc(); + } + if (ch->flags & CH_LAST) + break; + ch++; + } + } + + DEBUG(sl, 1, "All pointers fixed"); + + assert(_sl.action == SLA_PTRS); +} + /******************************************* ********** START OF LZO CODE ************** *******************************************/ @@ -1424,6 +1472,8 @@ static const ChunkHandler * const _chunk_handlers[] = { */ static uint ReferenceToInt(const void *obj, SLRefType rt) { + assert(_sl.action == SLA_SAVE); + if (obj == NULL) return 0; switch (rt) { @@ -1452,8 +1502,13 @@ static uint ReferenceToInt(const void *obj, SLRefType rt) * @param rt SLRefType type of the object the pointer is sought of * @return Return the index converted to a pointer of any type */ + +assert_compile(sizeof(size_t) <= sizeof(void *)); + static void *IntToReference(uint index, SLRefType rt) { + assert(_sl.action == SLA_PTRS); + /* After version 4.3 REF_VEHICLE_OLD is saved as REF_VEHICLE, * and should be loaded like that */ if (rt == REF_VEHICLE_OLD && !CheckSavegameVersionOldStyle(4, 4)) { @@ -1461,59 +1516,50 @@ static void *IntToReference(uint index, SLRefType rt) } /* No need to look up NULL pointers, just return immediately */ - if (rt != REF_VEHICLE_OLD && index == 0) { - return NULL; - } + if (index == (rt == REF_VEHICLE_OLD ? 0xFFFF : 0)) return NULL; - index--; // correct for the NULL index + /* Correct index. Old vehicles were saved differently: + * invalid vehicle was 0xFFFF, now we use 0x0000 for everything invalid. */ + if (rt != REF_VEHICLE_OLD) index--; switch (rt) { case REF_ORDERLIST: - if (_OrderList_pool.AddBlockIfNeeded(index)) return OrderList::Get(index); - SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "OrderList index out of range"); + if (OrderList::IsValidID(index)) return OrderList::Get(index); + SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "Referencing invalid OrderList"); case REF_ORDER: - if (_Order_pool.AddBlockIfNeeded(index)) return Order::Get(index); - SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "Order index out of range"); + if (Order::IsValidID(index)) return Order::Get(index); + /* in old versions, invalid order was used to mark end of order list */ + if (CheckSavegameVersionOldStyle(5, 2)) return NULL; + SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "Referencing invalid Order"); + case REF_VEHICLE_OLD: case REF_VEHICLE: - if (_Vehicle_pool.AddBlockIfNeeded(index)) return Vehicle::Get(index); - SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "Vehicle index out of range"); + if (Vehicle::IsValidID(index)) return Vehicle::Get(index); + SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "Referencing invalid Vehicle"); case REF_STATION: - if (_Station_pool.AddBlockIfNeeded(index)) return Station::Get(index); - SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "Station index out of range"); + if (Station::IsValidID(index)) return Station::Get(index); + SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "Referencing invalid Station"); case REF_TOWN: - if (_Town_pool.AddBlockIfNeeded(index)) return Town::Get(index); - SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "Town index out of range"); + if (Town::IsValidID(index)) return Town::Get(index); + SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "Referencing invalid Town"); case REF_ROADSTOPS: - if (_RoadStop_pool.AddBlockIfNeeded(index)) return RoadStop::Get(index); - SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "RoadStop index out of range"); + if (RoadStop::IsValidID(index)) return RoadStop::Get(index); + SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "Referencing invalid RoadStop"); case REF_ENGINE_RENEWS: - if (_EngineRenew_pool.AddBlockIfNeeded(index)) return EngineRenew::Get(index); - SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "EngineRenew index out of range"); + if (EngineRenew::IsValidID(index)) return EngineRenew::Get(index); + SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "Referencing invalid EngineRenew"); case REF_CARGO_PACKET: - if (_CargoPacket_pool.AddBlockIfNeeded(index)) return CargoPacket::Get(index); - SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "CargoPacket index out of range"); - - case REF_VEHICLE_OLD: - /* Old vehicles were saved differently: - * invalid vehicle was 0xFFFF, - * and the index was not - 1.. correct for this */ - index++; - if (index == INVALID_VEHICLE) return NULL; - - if (_Vehicle_pool.AddBlockIfNeeded(index)) return Vehicle::Get(index); - SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "Vehicle index out of range"); + if (CargoPacket::IsValidID(index)) return CargoPacket::Get(index); + SlError(STR_GAME_SAVELOAD_ERROR_BROKEN_SAVEGAME, "Referencing invalid CargoPacket"); default: NOT_REACHED(); } - - return NULL; } /** The format for a reader/writer type of a savegame */ @@ -1852,6 +1898,7 @@ SaveOrLoadResult SaveOrLoad(const char *filename, int mode, Subdirectory sb) GamelogReset(); SlLoadChunks(); + SlFixPointers(); fmt->uninit_read(); fclose(_sl.fh); |