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OpenTTD-patches/src/saveload/oldloader.cpp

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/* $Id$ */
/** @file oldloader.cpp Loading of old TTD(patch) savegames. */
#include "../stdafx.h"
#include "../openttd.h"
#include "../station_map.h"
#include "../town.h"
#include "../industry.h"
#include "../company_func.h"
#include "../company_base.h"
#include "../aircraft.h"
#include "../roadveh.h"
#include "../ship.h"
#include "../train.h"
#include "../signs_base.h"
#include "../debug.h"
#include "../depot_base.h"
#include "../newgrf_config.h"
#include "../ai/ai.hpp"
#include "../zoom_func.h"
#include "../functions.h"
#include "../date_func.h"
#include "../vehicle_func.h"
#include "../variables.h"
#include "../strings_func.h"
#include "../effectvehicle_base.h"
#include "../string_func.h"
#include "../core/mem_func.hpp"
#include "../core/alloc_type.hpp"
#include "table/strings.h"
#include "saveload.h"
#include "saveload_internal.h"
enum {
HEADER_SIZE = 49,
BUFFER_SIZE = 4096,
OLD_MAP_SIZE = 256 * 256
};
struct LoadgameState {
FILE *file;
uint chunk_size;
bool decoding;
byte decode_char;
uint buffer_count;
uint buffer_cur;
byte buffer[BUFFER_SIZE];
uint total_read;
bool failed;
};
/* OldChunk-Type */
enum OldChunkType {
OC_SIMPLE = 0,
OC_NULL = 1,
OC_CHUNK = 2,
OC_ASSERT = 3,
/* 8 bits allocated (256 max) */
OC_VAR_I8 = 1 << 8,
OC_VAR_U8 = 2 << 8,
OC_VAR_I16 = 3 << 8,
OC_VAR_U16 = 4 << 8,
OC_VAR_I32 = 5 << 8,
OC_VAR_U32 = 6 << 8,
OC_VAR_I64 = 7 << 8,
/* 8 bits allocated (256 max) */
OC_FILE_I8 = 1 << 16,
OC_FILE_U8 = 2 << 16,
OC_FILE_I16 = 3 << 16,
OC_FILE_U16 = 4 << 16,
OC_FILE_I32 = 5 << 16,
OC_FILE_U32 = 6 << 16,
/* 8 bits allocated (256 max) */
OC_INT8 = OC_VAR_I8 | OC_FILE_I8,
OC_UINT8 = OC_VAR_U8 | OC_FILE_U8,
OC_INT16 = OC_VAR_I16 | OC_FILE_I16,
OC_UINT16 = OC_VAR_U16 | OC_FILE_U16,
OC_INT32 = OC_VAR_I32 | OC_FILE_I32,
OC_UINT32 = OC_VAR_U32 | OC_FILE_U32,
OC_TILE = OC_VAR_U32 | OC_FILE_U16,
/**
* Dereference the pointer once before writing to it,
* so we do not have to use big static arrays.
*/
OC_DEREFERENCE_POINTER = 1 << 31,
OC_END = 0 ///< End of the whole chunk, all 32 bits set to zero
};
DECLARE_ENUM_AS_BIT_SET(OldChunkType);
typedef bool OldChunkProc(LoadgameState *ls, int num);
struct OldChunks {
OldChunkType type; ///< Type of field
uint32 amount; ///< Amount of fields
void *ptr; ///< Pointer where to save the data (may only be set if offset is 0)
uint offset; ///< Offset from basepointer (may only be set if ptr is NULL)
OldChunkProc *proc; ///< Pointer to function that is called with OC_CHUNK
};
/* If it fails, check lines above.. */
assert_compile(sizeof(TileIndex) == 4);
extern SavegameType _savegame_type;
extern uint32 _ttdp_version;
static uint32 _bump_assert_value;
static bool _read_ttdpatch_flags;
static OldChunkType GetOldChunkType(OldChunkType type) {return (OldChunkType)GB(type, 0, 8);}
static OldChunkType GetOldChunkVarType(OldChunkType type) {return (OldChunkType)(GB(type, 8, 8) << 8);}
static OldChunkType GetOldChunkFileType(OldChunkType type) {return (OldChunkType)(GB(type, 16, 8) << 16);}
static inline byte CalcOldVarLen(OldChunkType type)
{
static const byte type_mem_size[] = {0, 1, 1, 2, 2, 4, 4, 8};
byte length = GB(type, 8, 8);
assert(length != 0 && length < lengthof(type_mem_size));
return type_mem_size[length];
}
/**
*
* Reads a byte from a file (do not call yourself, use ReadByte())
*
*/
static byte ReadByteFromFile(LoadgameState *ls)
{
/* To avoid slow reads, we read BUFFER_SIZE of bytes per time
and just return a byte per time */
if (ls->buffer_cur >= ls->buffer_count) {
/* Read some new bytes from the file */
int count = (int)fread(ls->buffer, 1, BUFFER_SIZE, ls->file);
/* We tried to read, but there is nothing in the file anymore.. */
if (count == 0) {
DEBUG(oldloader, 0, "Read past end of file, loading failed");
ls->failed = true;
}
ls->buffer_count = count;
ls->buffer_cur = 0;
}
return ls->buffer[ls->buffer_cur++];
}
/**
*
* Reads a byte from the buffer and decompress if needed
*
*/
static byte ReadByte(LoadgameState *ls)
{
/* Old savegames have a nice compression algorithm (RLE)
which means that we have a chunk, which starts with a length
byte. If that byte is negative, we have to repeat the next byte
that many times ( + 1). Else, we need to read that amount of bytes.
Works pretty good if you have many zero's behind eachother */
if (ls->chunk_size == 0) {
/* Read new chunk */
int8 new_byte = ReadByteFromFile(ls);
if (new_byte < 0) {
/* Repeat next char for new_byte times */
ls->decoding = true;
ls->decode_char = ReadByteFromFile(ls);
ls->chunk_size = -new_byte + 1;
} else {
ls->decoding = false;
ls->chunk_size = new_byte + 1;
}
}
ls->total_read++;
ls->chunk_size--;
return ls->decoding ? ls->decode_char : ReadByteFromFile(ls);
}
static inline uint16 ReadUint16(LoadgameState *ls)
{
byte x = ReadByte(ls);
return x | ReadByte(ls) << 8;
}
static inline uint32 ReadUint32(LoadgameState *ls)
{
uint16 x = ReadUint16(ls);
return x | ReadUint16(ls) << 16;
}
/**
*
* Loads a chunk from the old savegame
*
*/
static bool LoadChunk(LoadgameState *ls, void *base, const OldChunks *chunks)
{
const OldChunks *chunk = chunks;
byte *base_ptr = (byte*)base;
while (chunk->type != OC_END) {
byte *ptr = (byte*)chunk->ptr;
if ((chunk->type & OC_DEREFERENCE_POINTER) != 0) ptr = *(byte**)ptr;
for (uint i = 0; i < chunk->amount; i++) {
if (ls->failed) return false;
/* Handle simple types */
if (GetOldChunkType(chunk->type) != 0) {
switch (GetOldChunkType(chunk->type)) {
/* Just read the byte and forget about it */
case OC_NULL: ReadByte(ls); break;
case OC_CHUNK:
/* Call function, with 'i' as parameter to tell which item we
* are going to read */
if (!chunk->proc(ls, i)) return false;
break;
case OC_ASSERT:
DEBUG(oldloader, 4, "Assert point: 0x%X / 0x%X", ls->total_read, chunk->offset + _bump_assert_value);
if (ls->total_read != chunk->offset + _bump_assert_value) ls->failed = true;
default: break;
}
} else {
uint64 res = 0;
/* Reading from the file: bits 16 to 23 have the FILE type */
switch (GetOldChunkFileType(chunk->type)) {
case OC_FILE_I8: res = (int8)ReadByte(ls); break;
case OC_FILE_U8: res = ReadByte(ls); break;
case OC_FILE_I16: res = (int16)ReadUint16(ls); break;
case OC_FILE_U16: res = ReadUint16(ls); break;
case OC_FILE_I32: res = (int32)ReadUint32(ls); break;
case OC_FILE_U32: res = ReadUint32(ls); break;
default: NOT_REACHED();
}
/* Sanity check */
assert(base_ptr != NULL || chunk->ptr != NULL);
/* Writing to the var: bits 8 to 15 have the VAR type */
if (chunk->ptr == NULL) ptr = base_ptr + chunk->offset;
/* Write the data */
switch (GetOldChunkVarType(chunk->type)) {
case OC_VAR_I8: *(int8 *)ptr = GB(res, 0, 8); break;
case OC_VAR_U8: *(uint8 *)ptr = GB(res, 0, 8); break;
case OC_VAR_I16:*(int16 *)ptr = GB(res, 0, 16); break;
case OC_VAR_U16:*(uint16*)ptr = GB(res, 0, 16); break;
case OC_VAR_I32:*(int32 *)ptr = res; break;
case OC_VAR_U32:*(uint32*)ptr = res; break;
case OC_VAR_I64:*(int64 *)ptr = res; break;
default: NOT_REACHED();
}
/* Increase pointer base for arrays when looping */
if (chunk->amount > 1 && chunk->ptr != NULL) ptr += CalcOldVarLen(chunk->type);
}
}
chunk++;
}
return true;
}
/**
*
* Initialize some data before reading
*
*/
static void InitLoading(LoadgameState *ls)
{
ls->chunk_size = 0;
ls->total_read = 0;
ls->failed = false;
ls->decoding = false;
ls->decode_char = 0;
ls->buffer_cur = 0;
ls->buffer_count = 0;
memset(ls->buffer, 0, BUFFER_SIZE);
_bump_assert_value = 0;
_savegame_type = SGT_TTD;
_ttdp_version = 0;
_read_ttdpatch_flags = false;
}
/*
* Begin -- Stuff to fix the savegames to be OpenTTD compatible
*/
static uint8 *_old_map3;
static void FixOldMapArray()
{
/* _old_map3 is moved to _m::m3 and _m::m4 */
for (TileIndex t = 0; t < OLD_MAP_SIZE; t++) {
_m[t].m3 = _old_map3[t * 2];
_m[t].m4 = _old_map3[t * 2 + 1];
}
for (TileIndex t = 0; t < OLD_MAP_SIZE; t++) {
switch (GetTileType(t)) {
case MP_STATION:
_m[t].m4 = 0; // We do not understand this TTDP station mapping (yet)
switch (_m[t].m5) {
/* We have drive through stops at a totally different place */
case 0x53: case 0x54: _m[t].m5 += 170 - 0x53; break; // Bus drive through
case 0x57: case 0x58: _m[t].m5 += 168 - 0x57; break; // Truck drive through
case 0x55: case 0x56: _m[t].m5 += 170 - 0x55; break; // Bus tram stop
case 0x59: case 0x5A: _m[t].m5 += 168 - 0x59; break; // Truck tram stop
default: break;
}
break;
case MP_RAILWAY:
/* We save presignals different from TTDPatch, convert them */
if (GB(_m[t].m5, 6, 2) == 1) { // RAIL_TILE_SIGNALS
/* This byte is always zero in TTD for this type of tile */
if (_m[t].m4) { // Convert the presignals to our own format
_m[t].m4 = (_m[t].m4 >> 1) & 7;
}
}
/* TTDPatch stores PBS things in L6 and all elsewhere; so we'll just
* clear it for ourselves and let OTTD's rebuild PBS itself */
_m[t].m4 &= 0xF; // Only keep the lower four bits; upper four is PBS
break;
case MP_WATER:
/* if water class == 3, make river there */
if (GB(_m[t].m3, 0, 2) == 3) {
SetTileType(t, MP_WATER);
SetTileOwner(t, OWNER_WATER);
_m[t].m2 = 0;
_m[t].m3 = 2; // WATER_CLASS_RIVER
_m[t].m4 = Random();
_m[t].m5 = 0;
}
break;
default:
break;
}
}
/* Some old TTD(Patch) savegames could have buoys at tile 0
* (without assigned station struct) */
MemSetT(&_m[0], 0);
SetTileType(0, MP_WATER);
SetTileOwner(0, OWNER_WATER);
}
extern uint32 GetOldTownName(uint32 townnameparts, byte old_town_name_type);
static void FixOldTowns()
{
Town *town;
/* Convert town-names if needed */
FOR_ALL_TOWNS(town) {
if (IsInsideMM(town->townnametype, 0x20C1, 0x20C3)) {
town->townnametype = SPECSTR_TOWNNAME_ENGLISH + _settings_game.game_creation.town_name;
town->townnameparts = GetOldTownName(town->townnameparts, _settings_game.game_creation.town_name);
}
}
}
static StringID *_old_vehicle_names = NULL;
static void FixOldVehicles()
{
Vehicle *v;
FOR_ALL_VEHICLES(v) {
v->name = CopyFromOldName(_old_vehicle_names[v->index]);
/* We haven't used this bit for stations for ages */
if (v->type == VEH_ROAD &&
v->u.road.state != RVSB_IN_DEPOT &&
v->u.road.state != RVSB_WORMHOLE) {
ClrBit(v->u.road.state, RVS_IS_STOPPING);
}
/* The subtype should be 0, but it sometimes isn't :( */
if (v->type == VEH_ROAD) v->subtype = 0;
/* Sometimes primary vehicles would have a nothing (invalid) order
* or vehicles that could not have an order would still have a
* (loading) order which causes assertions and the like later on.
*/
if (!IsCompanyBuildableVehicleType(v) ||
(v->IsPrimaryVehicle() && v->current_order.IsType(OT_NOTHING))) {
v->current_order.MakeDummy();
}
/* Shared orders are fixed in AfterLoadVehicles now */
}
}
/*
* End -- Stuff to fix the savegames to be OpenTTD compatible
*/
/* Help:
* - OCL_SVAR: load 'type' to offset 'offset' in a struct of type 'base', which must also
* be given via base in LoadChunk() as real pointer
* - OCL_VAR: load 'type' to a global var
* - OCL_END: every struct must end with this
* - OCL_NULL: read 'amount' of bytes and send them to /dev/null or something
* - OCL_CHUNK: load an other proc to load a part of the savegame, 'amount' times
* - OCL_ASSERT: to check if we are really at the place we expect to be.. because old savegames are too binary to be sure ;)
*/
#define OCL_SVAR(type, base, offset) { type, 1, NULL, (uint)cpp_offsetof(base, offset), NULL }
#define OCL_VAR(type, amount, pointer) { type, amount, pointer, 0, NULL }
#define OCL_END() { OC_END, 0, NULL, 0, NULL }
#define OCL_NULL(amount) { OC_NULL, amount, NULL, 0, NULL }
#define OCL_CHUNK(amount, proc) { OC_CHUNK, amount, NULL, 0, proc }
#define OCL_ASSERT(size) { OC_ASSERT, 1, NULL, size, NULL }
/* The savegames has some hard-coded pointers, because it always enters the same
piece of memory.. we don't.. so we need to remap ;)
Old Towns are 94 bytes big
Old Orders are 2 bytes big */
#define REMAP_TOWN_IDX(x) ((x) - (0x0459154 - 0x0458EF0)) / 94
#define REMAP_ORDER_IDX(x) ((x) - (0x045AB08 - 0x0458EF0)) / 2
extern TileIndex *_animated_tile_list;
extern uint _animated_tile_count;
extern char *_old_name_array;
static byte _old_vehicle_multiplier;
static uint32 _old_town_index;
static uint16 _old_string_id;
static uint16 _old_string_id_2;
static uint16 _old_extra_chunk_nums;
static void ReadTTDPatchFlags()
{
if (_read_ttdpatch_flags) return;
_read_ttdpatch_flags = true;
/* TTDPatch misuses _old_map3 for flags.. read them! */
_old_vehicle_multiplier = _old_map3[0];
/* Somehow.... there was an error in some savegames, so 0 becomes 1
and 1 becomes 2. The rest of the values are okay */
if (_old_vehicle_multiplier < 2) _old_vehicle_multiplier++;
_old_vehicle_names = MallocT<StringID>(_old_vehicle_multiplier * 850);
/* TTDPatch increases the Vehicle-part in the middle of the game,
so if the multipler is anything else but 1, the assert fails..
bump the assert value so it doesn't!
(1 multipler == 850 vehicles
1 vehicle == 128 bytes */
_bump_assert_value = (_old_vehicle_multiplier - 1) * 850 * 128;
for (uint i = 0; i < 17; i++) { // check tile 0, too
if (_old_map3[i] != 0) _savegame_type = SGT_TTDP1;
}
/* Check if we have a modern TTDPatch savegame (has extra data all around) */
if (memcmp(&_old_map3[0x1FFFA], "TTDp", 4) == 0) _savegame_type = SGT_TTDP2;
_old_extra_chunk_nums = _old_map3[_savegame_type == SGT_TTDP2 ? 0x1FFFE : 0x2];
/* Clean the misused places */
for (uint i = 0; i < 17; i++) _old_map3[i] = 0;
for (uint i = 0x1FE00; i < 0x20000; i++) _old_map3[i] = 0;
if (_savegame_type == SGT_TTDP2) DEBUG(oldloader, 2, "Found TTDPatch game");
DEBUG(oldloader, 3, "Vehicle-multiplier is set to %d (%d vehicles)", _old_vehicle_multiplier, _old_vehicle_multiplier * 850);
}
static const OldChunks town_chunk[] = {
OCL_SVAR( OC_TILE, Town, xy ),
OCL_NULL( 2 ), ///< population, no longer in use
OCL_SVAR( OC_UINT16, Town, townnametype ),
OCL_SVAR( OC_UINT32, Town, townnameparts ),
OCL_SVAR( OC_UINT8, Town, grow_counter ),
OCL_NULL( 1 ), ///< sort_index, no longer in use
OCL_NULL( 4 ), ///< sign-coordinates, no longer in use
OCL_NULL( 2 ), ///< namewidth, no longer in use
OCL_SVAR( OC_UINT16, Town, flags12 ),
OCL_NULL( 10 ), ///< radius, no longer in use
OCL_SVAR( OC_UINT16, Town, ratings[0] ),
OCL_SVAR( OC_UINT16, Town, ratings[1] ),
OCL_SVAR( OC_UINT16, Town, ratings[2] ),
OCL_SVAR( OC_UINT16, Town, ratings[3] ),
OCL_SVAR( OC_UINT16, Town, ratings[4] ),
OCL_SVAR( OC_UINT16, Town, ratings[5] ),
OCL_SVAR( OC_UINT16, Town, ratings[6] ),
OCL_SVAR( OC_UINT16, Town, ratings[7] ),
/* XXX - This is pretty odd.. we read 32bit, but only write 16bit.. sure there is
nothing changed ? ? */
OCL_SVAR( OC_FILE_U32 | OC_VAR_U16, Town, have_ratings ),
OCL_SVAR( OC_FILE_U32 | OC_VAR_U16, Town, statues ),
OCL_NULL( 2 ), ///< num_houses, no longer in use
OCL_SVAR( OC_UINT8, Town, time_until_rebuild ),
OCL_SVAR( OC_UINT8, Town, growth_rate ),
OCL_SVAR( OC_UINT16, Town, new_max_pass ),
OCL_SVAR( OC_UINT16, Town, new_max_mail ),
OCL_SVAR( OC_UINT16, Town, new_act_pass ),
OCL_SVAR( OC_UINT16, Town, new_act_mail ),
OCL_SVAR( OC_UINT16, Town, max_pass ),
OCL_SVAR( OC_UINT16, Town, max_mail ),
OCL_SVAR( OC_UINT16, Town, act_pass ),
OCL_SVAR( OC_UINT16, Town, act_mail ),
OCL_SVAR( OC_UINT8, Town, pct_pass_transported ),
OCL_SVAR( OC_UINT8, Town, pct_mail_transported ),
OCL_SVAR( OC_UINT16, Town, new_act_food ),
OCL_SVAR( OC_UINT16, Town, new_act_water ),
OCL_SVAR( OC_UINT16, Town, act_food ),
OCL_SVAR( OC_UINT16, Town, act_water ),
OCL_SVAR( OC_UINT8, Town, road_build_months ),
OCL_SVAR( OC_UINT8, Town, fund_buildings_months ),
OCL_NULL( 8 ), ///< some junk at the end of the record
OCL_END()
};
static bool LoadOldTown(LoadgameState *ls, int num)
{
Town *t = new (num) Town();
if (!LoadChunk(ls, t, town_chunk)) return false;
if (t->xy == 0) t->xy = INVALID_TILE;
return true;
}
static uint16 _old_order;
static const OldChunks order_chunk[] = {
OCL_VAR ( OC_UINT16, 1, &_old_order ),
OCL_END()
};
static bool LoadOldOrder(LoadgameState *ls, int num)
{
if (!LoadChunk(ls, NULL, order_chunk)) return false;
new (num) Order(UnpackOldOrder(_old_order));
/* Relink the orders to eachother (in TTD(Patch) the orders for one
vehicle are behind eachother, with an invalid order (OT_NOTHING) as indication that
it is the last order */
if (num > 0 && GetOrder(num)->IsValid())
GetOrder(num - 1)->next = GetOrder(num);
return true;
}
static bool LoadOldAnimTileList(LoadgameState *ls, int num)
{
/* This is sligthly hackish - we must load a chunk into an array whose
* address isn't static, but instead pointed to by _animated_tile_list.
* To achieve that, create an OldChunks list on the stack on the fly.
* The list cannot be static because the value of _animated_tile_list
* can change between calls. */
const OldChunks anim_chunk[] = {
OCL_VAR ( OC_TILE, 256, _animated_tile_list ),
OCL_END ()
};
if (!LoadChunk(ls, NULL, anim_chunk)) return false;
/* Update the animated tile counter by counting till the first zero in the array */
for (_animated_tile_count = 0; _animated_tile_count < 256; _animated_tile_count++) {
if (_animated_tile_list[_animated_tile_count] == 0) break;
}
return true;
}
static const OldChunks depot_chunk[] = {
OCL_SVAR( OC_TILE, Depot, xy ),
OCL_VAR ( OC_UINT32, 1, &_old_town_index ),
OCL_END()
};
static bool LoadOldDepot(LoadgameState *ls, int num)
{
Depot *d = new (num) Depot();
if (!LoadChunk(ls, d, depot_chunk)) return false;
if (d->xy != 0) {
GetDepot(num)->town_index = REMAP_TOWN_IDX(_old_town_index);
} else {
d->xy = INVALID_TILE;
}
return true;
}
static int32 _old_price;
static uint16 _old_price_frac;
static const OldChunks price_chunk[] = {
OCL_VAR ( OC_INT32, 1, &_old_price ),
OCL_VAR ( OC_UINT16, 1, &_old_price_frac ),
OCL_END()
};
static bool LoadOldPrice(LoadgameState *ls, int num)
{
if (!LoadChunk(ls, NULL, price_chunk)) return false;
/* We use a struct to store the prices, but they are ints in a row..
so just access the struct as an array of int32's */
((Money*)&_price)[num] = _old_price;
_price_frac[num] = _old_price_frac;
return true;
}
static const OldChunks cargo_payment_rate_chunk[] = {
OCL_VAR ( OC_INT32, 1, &_old_price ),
OCL_VAR ( OC_UINT16, 1, &_old_price_frac ),
OCL_NULL( 2 ), ///< Junk
OCL_END()
};
static bool LoadOldCargoPaymentRate(LoadgameState *ls, int num)
{
if (!LoadChunk(ls, NULL, cargo_payment_rate_chunk)) return false;
_cargo_payment_rates[num] = -_old_price;
_cargo_payment_rates_frac[num] = _old_price_frac;
return true;
}
static uint _current_station_id;
static uint16 _waiting_acceptance;
static uint8 _cargo_source;
static uint8 _cargo_days;
static const OldChunks goods_chunk[] = {
OCL_VAR ( OC_UINT16, 1, &_waiting_acceptance ),
OCL_SVAR( OC_UINT8, GoodsEntry, days_since_pickup ),
OCL_SVAR( OC_UINT8, GoodsEntry, rating ),
OCL_VAR ( OC_UINT8, 1, &_cargo_source ),
OCL_VAR ( OC_UINT8, 1, &_cargo_days ),
OCL_SVAR( OC_UINT8, GoodsEntry, last_speed ),
OCL_SVAR( OC_UINT8, GoodsEntry, last_age ),
OCL_END()
};
static bool LoadOldGood(LoadgameState *ls, int num)
{
Station *st = GetStation(_current_station_id);
GoodsEntry *ge = &st->goods[num];
bool ret = LoadChunk(ls, ge, goods_chunk);
if (!ret) return false;
SB(ge->acceptance_pickup, GoodsEntry::ACCEPTANCE, 1, HasBit(_waiting_acceptance, 15));
SB(ge->acceptance_pickup, GoodsEntry::PICKUP, 1, _cargo_source != 0xFF);
if (GB(_waiting_acceptance, 0, 12) != 0) {
CargoPacket *cp = new CargoPacket();
cp->source = (_cargo_source == 0xFF) ? INVALID_STATION : _cargo_source;
cp->count = GB(_waiting_acceptance, 0, 12);
cp->days_in_transit = _cargo_days;
ge->cargo.Append(cp);
}
return ret;
}
static const OldChunks station_chunk[] = {
OCL_SVAR( OC_TILE, Station, xy ),
OCL_VAR ( OC_UINT32, 1, &_old_town_index ),
OCL_NULL( 4 ), ///< bus/lorry tile
OCL_SVAR( OC_TILE, Station, train_tile ),
OCL_SVAR( OC_TILE, Station, airport_tile ),
OCL_SVAR( OC_TILE, Station, dock_tile ),
OCL_SVAR( OC_UINT8, Station, trainst_w ),
OCL_NULL( 1 ), ///< sort-index, no longer in use
OCL_NULL( 2 ), ///< sign-width, no longer in use
OCL_VAR ( OC_UINT16, 1, &_old_string_id ),
OCL_NULL( 4 ), ///< sign left/top, no longer in use
OCL_SVAR( OC_UINT16, Station, had_vehicle_of_type ),
OCL_CHUNK( 12, LoadOldGood ),
OCL_SVAR( OC_UINT8, Station, time_since_load ),
OCL_SVAR( OC_UINT8, Station, time_since_unload ),
OCL_SVAR( OC_UINT8, Station, delete_ctr ),
OCL_SVAR( OC_UINT8, Station, owner ),
OCL_SVAR( OC_UINT8, Station, facilities ),
OCL_SVAR( OC_UINT8, Station, airport_type ),
/* Bus/truck status, no longer in use
* Blocked months
* Unknown
*/
OCL_NULL( 4 ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U32, Station, airport_flags ),
OCL_NULL( 2 ), ///< last_vehicle. now last_vehicle_type
OCL_NULL( 4 ), ///< Junk at end of chunk
OCL_END()
};
static bool LoadOldStation(LoadgameState *ls, int num)
{
Station *st = new (num) Station();
_current_station_id = num;
if (!LoadChunk(ls, st, station_chunk))
return false;
if (st->xy != 0) {
st->town = GetTown(REMAP_TOWN_IDX(_old_town_index));
st->string_id = RemapOldStringID(_old_string_id);
} else {
st->xy = INVALID_TILE;
}
return true;
}
static const OldChunks industry_chunk[] = {
OCL_SVAR( OC_TILE, Industry, xy ),
OCL_VAR ( OC_UINT32, 1, &_old_town_index ),
OCL_SVAR( OC_UINT8, Industry, width ),
OCL_SVAR( OC_UINT8, Industry, height ),
OCL_NULL( 2 ), ///< used to be industry's produced_cargo
OCL_SVAR( OC_UINT16, Industry, produced_cargo_waiting[0] ),
OCL_SVAR( OC_UINT16, Industry, produced_cargo_waiting[1] ),
OCL_SVAR( OC_UINT8, Industry, production_rate[0] ),
OCL_SVAR( OC_UINT8, Industry, production_rate[1] ),
OCL_NULL( 3 ), ///< used to be industry's accepts_cargo
OCL_SVAR( OC_UINT8, Industry, prod_level ),
OCL_SVAR( OC_UINT16, Industry, this_month_production[0] ),
OCL_SVAR( OC_UINT16, Industry, this_month_production[1] ),
OCL_SVAR( OC_UINT16, Industry, this_month_transported[0] ),
OCL_SVAR( OC_UINT16, Industry, this_month_transported[1] ),
OCL_SVAR( OC_UINT8, Industry, last_month_pct_transported[0] ),
OCL_SVAR( OC_UINT8, Industry, last_month_pct_transported[1] ),
OCL_SVAR( OC_UINT16, Industry, last_month_production[0] ),
OCL_SVAR( OC_UINT16, Industry, last_month_production[1] ),
OCL_SVAR( OC_UINT16, Industry, last_month_transported[0] ),
OCL_SVAR( OC_UINT16, Industry, last_month_transported[1] ),
OCL_SVAR( OC_UINT8, Industry, type ),
OCL_SVAR( OC_UINT8, Industry, owner ),
OCL_SVAR( OC_UINT8, Industry, random_color ),
OCL_SVAR( OC_FILE_U8 | OC_VAR_I32, Industry, last_prod_year ),
OCL_SVAR( OC_UINT16, Industry, counter ),
OCL_SVAR( OC_UINT8, Industry, was_cargo_delivered ),
OCL_NULL( 9 ), ///< Random junk at the end of this chunk
OCL_END()
};
static bool LoadOldIndustry(LoadgameState *ls, int num)
{
Industry *i = new (num) Industry();
if (!LoadChunk(ls, i, industry_chunk)) return false;
if (i->xy != 0) {
i->town = GetTown(REMAP_TOWN_IDX(_old_town_index));
IncIndustryTypeCount(i->type);
} else {
i->xy = INVALID_TILE;
}
return true;
}
static CompanyID _current_company_id;
static int32 _old_yearly;
static const OldChunks _company_yearly_chunk[] = {
OCL_VAR( OC_INT32, 1, &_old_yearly ),
OCL_END()
};
static bool OldCompanyYearly(LoadgameState *ls, int num)
{
int i;
Company *c = GetCompany(_current_company_id);
for (i = 0; i < 13; i++) {
if (!LoadChunk(ls, NULL, _company_yearly_chunk)) return false;
c->yearly_expenses[num][i] = _old_yearly;
}
return true;
}
static const OldChunks _company_economy_chunk[] = {
OCL_SVAR( OC_FILE_I32 | OC_VAR_I64, CompanyEconomyEntry, income ),
OCL_SVAR( OC_FILE_I32 | OC_VAR_I64, CompanyEconomyEntry, expenses ),
OCL_SVAR( OC_INT32, CompanyEconomyEntry, delivered_cargo ),
OCL_SVAR( OC_INT32, CompanyEconomyEntry, performance_history ),
OCL_SVAR( OC_FILE_I32 | OC_VAR_I64, CompanyEconomyEntry, company_value ),
OCL_END()
};
static bool OldCompanyEconomy(LoadgameState *ls, int num)
{
int i;
Company *c = GetCompany(_current_company_id);
if (!LoadChunk(ls, &c->cur_economy, _company_economy_chunk)) return false;
/* Don't ask, but the number in TTD(Patch) are inversed to OpenTTD */
c->cur_economy.income = -c->cur_economy.income;
c->cur_economy.expenses = -c->cur_economy.expenses;
for (i = 0; i < 24; i++) {
if (!LoadChunk(ls, &c->old_economy[i], _company_economy_chunk)) return false;
c->old_economy[i].income = -c->old_economy[i].income;
c->old_economy[i].expenses = -c->old_economy[i].expenses;
}
return true;
}
static const OldChunks _company_chunk[] = {
OCL_VAR ( OC_UINT16, 1, &_old_string_id ),
OCL_SVAR( OC_UINT32, Company, name_2 ),
OCL_SVAR( OC_UINT32, Company, face ),
OCL_VAR ( OC_UINT16, 1, &_old_string_id_2 ),
OCL_SVAR( OC_UINT32, Company, president_name_2 ),
OCL_SVAR( OC_FILE_I32 | OC_VAR_I64, Company, money ),
OCL_SVAR( OC_FILE_I32 | OC_VAR_I64, Company, current_loan ),
OCL_SVAR( OC_UINT8, Company, colour ),
OCL_SVAR( OC_UINT8, Company, money_fraction ),
OCL_SVAR( OC_UINT8, Company, quarters_of_bankrupcy ),
OCL_SVAR( OC_UINT8, Company, bankrupt_asked ),
OCL_SVAR( OC_FILE_U32 | OC_VAR_I64, Company, bankrupt_value ),
OCL_SVAR( OC_UINT16, Company, bankrupt_timeout ),
OCL_SVAR( OC_UINT32, Company, cargo_types ),
OCL_CHUNK( 3, OldCompanyYearly ),
OCL_CHUNK( 1, OldCompanyEconomy ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_I32, Company, inaugurated_year),
OCL_SVAR( OC_TILE, Company, last_build_coordinate ),
OCL_SVAR( OC_UINT8, Company, num_valid_stat_ent ),
OCL_NULL( 230 ), // Old AI
OCL_SVAR( OC_UINT8, Company, block_preview ),
OCL_NULL( 1 ), // Old AI
OCL_SVAR( OC_UINT8, Company, avail_railtypes ),
OCL_SVAR( OC_TILE, Company, location_of_HQ ),
OCL_SVAR( OC_UINT8, Company, share_owners[0] ),
OCL_SVAR( OC_UINT8, Company, share_owners[1] ),
OCL_SVAR( OC_UINT8, Company, share_owners[2] ),
OCL_SVAR( OC_UINT8, Company, share_owners[3] ),
OCL_NULL( 8 ), ///< junk at end of chunk
OCL_END()
};
static bool LoadOldCompany(LoadgameState *ls, int num)
{
Company *c = new (num) Company();
_current_company_id = (CompanyID)num;
if (!LoadChunk(ls, c, _company_chunk)) return false;
if (_old_string_id == 0) {
delete c;
return true;
}
c->name_1 = RemapOldStringID(_old_string_id);
c->president_name_1 = RemapOldStringID(_old_string_id_2);
if (num == 0) {
/* If the first company has no name, make sure we call it UNNAMED */
if (c->name_1 == 0)
c->name_1 = STR_SV_UNNAMED;
} else {
/* Beside some multiplayer maps (1 on 1), which we don't official support,
* all other companys are an AI.. mark them as such */
c->is_ai = true;
}
/* Sometimes it is better to not ask.. in old scenarios, the money
* was always 893288 pounds. In the newer versions this is correct,
* but correct for those oldies
* Ps: this also means that if you had exact 893288 pounds, you will go back
* to 100000.. this is a very VERY small chance ;) */
if (c->money == 893288) c->money = c->current_loan = 100000;
_company_colours[num] = c->colour;
c->inaugurated_year -= ORIGINAL_BASE_YEAR;
return true;
}
static uint32 _old_order_ptr;
static uint16 _old_next_ptr;
static uint32 _current_vehicle_id;
static const OldChunks vehicle_train_chunk[] = {
OCL_SVAR( OC_UINT8, VehicleRail, track ),
OCL_SVAR( OC_UINT8, VehicleRail, force_proceed ),
OCL_SVAR( OC_UINT16, VehicleRail, crash_anim_pos ),
OCL_SVAR( OC_UINT8, VehicleRail, railtype ),
OCL_NULL( 5 ), ///< Junk
OCL_END()
};
static const OldChunks vehicle_road_chunk[] = {
OCL_SVAR( OC_UINT8, VehicleRoad, state ),
OCL_SVAR( OC_UINT8, VehicleRoad, frame ),
OCL_SVAR( OC_UINT16, VehicleRoad, blocked_ctr ),
OCL_SVAR( OC_UINT8, VehicleRoad, overtaking ),
OCL_SVAR( OC_UINT8, VehicleRoad, overtaking_ctr ),
OCL_SVAR( OC_UINT16, VehicleRoad, crashed_ctr ),
OCL_SVAR( OC_UINT8, VehicleRoad, reverse_ctr ),
OCL_NULL( 1 ), ///< Junk
OCL_END()
};
static const OldChunks vehicle_ship_chunk[] = {
OCL_SVAR( OC_UINT8, VehicleShip, state ),
OCL_NULL( 9 ), ///< Junk
OCL_END()
};
static const OldChunks vehicle_air_chunk[] = {
OCL_SVAR( OC_UINT8, VehicleAir, pos ),
OCL_SVAR( OC_FILE_U8 | OC_VAR_U16, VehicleAir, targetairport ),
OCL_SVAR( OC_UINT16, VehicleAir, crashed_counter ),
OCL_SVAR( OC_UINT8, VehicleAir, state ),
OCL_NULL( 5 ), ///< Junk
OCL_END()
};
static const OldChunks vehicle_effect_chunk[] = {
OCL_SVAR( OC_UINT16, VehicleEffect, animation_state ),
OCL_SVAR( OC_UINT8, VehicleEffect, animation_substate ),
OCL_NULL( 7 ), // Junk
OCL_END()
};
static const OldChunks vehicle_disaster_chunk[] = {
OCL_SVAR( OC_UINT16, VehicleDisaster, image_override ),
OCL_SVAR( OC_UINT16, VehicleDisaster, big_ufo_destroyer_target ),
OCL_NULL( 6 ), ///< Junk
OCL_END()
};
static const OldChunks vehicle_empty_chunk[] = {
OCL_NULL( 10 ), ///< Junk
OCL_END()
};
static bool LoadOldVehicleUnion(LoadgameState *ls, int num)
{
Vehicle *v = GetVehicle(_current_vehicle_id);
uint temp = ls->total_read;
bool res;
switch (v->type) {
default: NOT_REACHED();
case VEH_INVALID : res = LoadChunk(ls, NULL, vehicle_empty_chunk); break;
case VEH_TRAIN : res = LoadChunk(ls, &v->u.rail, vehicle_train_chunk); break;
case VEH_ROAD : res = LoadChunk(ls, &v->u.road, vehicle_road_chunk); break;
case VEH_SHIP : res = LoadChunk(ls, &v->u.ship, vehicle_ship_chunk); break;
case VEH_AIRCRAFT: res = LoadChunk(ls, &v->u.air, vehicle_air_chunk); break;
case VEH_EFFECT : res = LoadChunk(ls, &v->u.effect, vehicle_effect_chunk); break;
case VEH_DISASTER: res = LoadChunk(ls, &v->u.disaster, vehicle_disaster_chunk); break;
}
/* This chunk size should always be 10 bytes */
if (ls->total_read - temp != 10) {
DEBUG(oldloader, 0, "Assert failed in VehicleUnion: invalid chunk size");
return false;
}
return res;
}
static uint16 _cargo_count;
static const OldChunks vehicle_chunk[] = {
OCL_SVAR( OC_UINT8, Vehicle, subtype ),
OCL_NULL( 2 ), ///< Hash, calculated automatically
OCL_NULL( 2 ), ///< Index, calculated automatically
OCL_VAR ( OC_UINT32, 1, &_old_order_ptr ),
OCL_VAR ( OC_UINT16, 1, &_old_order ),
OCL_NULL ( 1 ), ///< num_orders, now calculated
OCL_SVAR( OC_UINT8, Vehicle, cur_order_index ),
OCL_SVAR( OC_TILE, Vehicle, dest_tile ),
OCL_SVAR( OC_UINT16, Vehicle, load_unload_time_rem ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U32, Vehicle, date_of_last_service ),
OCL_SVAR( OC_UINT16, Vehicle, service_interval ),
OCL_SVAR( OC_FILE_U8 | OC_VAR_U16, Vehicle, last_station_visited ),
OCL_SVAR( OC_UINT8, Vehicle, tick_counter ),
OCL_SVAR( OC_UINT16, Vehicle, max_speed ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_I32, Vehicle, x_pos ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_I32, Vehicle, y_pos ),
OCL_SVAR( OC_UINT8, Vehicle, z_pos ),
OCL_SVAR( OC_UINT8, Vehicle, direction ),
OCL_NULL( 2 ), ///< x_offs and y_offs, calculated automatically
OCL_NULL( 2 ), ///< x_extent and y_extent, calculated automatically
OCL_NULL( 1 ), ///< z_extent, calculated automatically
OCL_SVAR( OC_UINT8, Vehicle, owner ),
OCL_SVAR( OC_TILE, Vehicle, tile ),
OCL_SVAR( OC_UINT16, Vehicle, cur_image ),
OCL_NULL( 8 ), ///< Vehicle sprite box, calculated automatically
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, Vehicle, vehstatus ),
OCL_SVAR( OC_UINT16, Vehicle, cur_speed ),
OCL_SVAR( OC_UINT8, Vehicle, subspeed ),
OCL_SVAR( OC_UINT8, Vehicle, acceleration ),
OCL_SVAR( OC_UINT8, Vehicle, progress ),
OCL_SVAR( OC_UINT8, Vehicle, cargo_type ),
OCL_SVAR( OC_UINT16, Vehicle, cargo_cap ),
OCL_VAR ( OC_UINT16, 1, &_cargo_count ),
OCL_VAR ( OC_UINT8, 1, &_cargo_source ),
OCL_VAR ( OC_UINT8, 1, &_cargo_days ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U32, Vehicle, age ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U32, Vehicle, max_age ),
OCL_SVAR( OC_FILE_U8 | OC_VAR_I32, Vehicle, build_year ),
OCL_SVAR( OC_FILE_U8 | OC_VAR_U16, Vehicle, unitnumber ),
OCL_SVAR( OC_UINT16, Vehicle, engine_type ),
OCL_SVAR( OC_UINT8, Vehicle, spritenum ),
OCL_SVAR( OC_UINT8, Vehicle, day_counter ),
OCL_SVAR( OC_UINT8, Vehicle, breakdowns_since_last_service ),
OCL_SVAR( OC_UINT8, Vehicle, breakdown_ctr ),
OCL_SVAR( OC_UINT8, Vehicle, breakdown_delay ),
OCL_SVAR( OC_UINT8, Vehicle, breakdown_chance ),
OCL_SVAR( OC_UINT16, Vehicle, reliability ),
OCL_SVAR( OC_UINT16, Vehicle, reliability_spd_dec ),
OCL_SVAR( OC_FILE_I32 | OC_VAR_I64, Vehicle, profit_this_year ),
OCL_SVAR( OC_FILE_I32 | OC_VAR_I64, Vehicle, profit_last_year ),
OCL_VAR ( OC_UINT16, 1, &_old_next_ptr ),
OCL_SVAR( OC_UINT32, Vehicle, value ),
OCL_VAR ( OC_UINT16, 1, &_old_string_id ),
OCL_CHUNK( 1, LoadOldVehicleUnion ),
OCL_NULL( 20 ), ///< Junk at end of struct (TTDPatch has some data in it)
OCL_END()
};
bool LoadOldVehicle(LoadgameState *ls, int num)
{
uint i;
/* Read the TTDPatch flags, because we need some info from it */
ReadTTDPatchFlags();
for (i = 0; i < _old_vehicle_multiplier; i++) {
_current_vehicle_id = num * _old_vehicle_multiplier + i;
/* Read the vehicle type and allocate the right vehicle */
Vehicle *v;
switch (ReadByte(ls)) {
default: NOT_REACHED();
case 0x00 /*VEH_INVALID */: v = new (_current_vehicle_id) InvalidVehicle(); break;
case 0x10 /*VEH_TRAIN */: v = new (_current_vehicle_id) Train(); break;
case 0x11 /*VEH_ROAD */: v = new (_current_vehicle_id) RoadVehicle(); break;
case 0x12 /*VEH_SHIP */: v = new (_current_vehicle_id) Ship(); break;
case 0x13 /*VEH_AIRCRAFT*/: v = new (_current_vehicle_id) Aircraft(); break;
case 0x14 /*VEH_EFFECT */: v = new (_current_vehicle_id) EffectVehicle(); break;
case 0x15 /*VEH_DISASTER*/: v = new (_current_vehicle_id) DisasterVehicle(); break;
}
if (!LoadChunk(ls, v, vehicle_chunk)) return false;
/* This should be consistent, else we have a big problem... */
if (v->index != _current_vehicle_id) {
DEBUG(oldloader, 0, "Loading failed - vehicle-array is invalid");
return false;
}
if (_old_order_ptr != 0 && _old_order_ptr != 0xFFFFFFFF) {
uint old_id = REMAP_ORDER_IDX(_old_order_ptr);
/* There is a maximum of 5000 orders in old savegames, so *if*
* we go over that limit something is very wrong. In that case
* we just assume there are no orders for the vehicle.
*/
if (old_id < 5000) v->orders.old = GetOrder(old_id);
}
v->current_order.AssignOrder(UnpackOldOrder(_old_order));
/* For some reason we need to correct for this */
switch (v->spritenum) {
case 0xfd: break;
case 0xff: v->spritenum = 0xfe; break;
default: v->spritenum >>= 1; break;
}
if (_old_next_ptr != 0xFFFF) v->next = GetVehiclePoolSize() <= _old_next_ptr ? new (_old_next_ptr) InvalidVehicle() : GetVehicle(_old_next_ptr);
_old_vehicle_names[_current_vehicle_id] = RemapOldStringID(_old_string_id);
v->name = NULL;
/* Vehicle-subtype is different in TTD(Patch) */
if (v->type == VEH_EFFECT) v->subtype = v->subtype >> 1;
if (_cargo_count != 0) {
CargoPacket *cp = new CargoPacket((_cargo_source == 0xFF) ? INVALID_STATION : _cargo_source, _cargo_count);
cp->days_in_transit = _cargo_days;
v->cargo.Append(cp);
}
}
return true;
}
static const OldChunks sign_chunk[] = {
OCL_VAR ( OC_UINT16, 1, &_old_string_id ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_I32, Sign, x ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_I32, Sign, y ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_I8, Sign, z ),
OCL_NULL( 6 ), ///< Width of sign, no longer in use
OCL_END()
};
static bool LoadOldSign(LoadgameState *ls, int num)
{
Sign *si = new (num) Sign();
if (!LoadChunk(ls, si, sign_chunk)) return false;
if (_old_string_id != 0) {
_old_string_id = RemapOldStringID(_old_string_id);
si->name = CopyFromOldName(_old_string_id);
si->owner = OWNER_NONE;
}
return true;
}
static const OldChunks engine_chunk[] = {
OCL_SVAR( OC_UINT16, Engine, company_avail ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U32, Engine, intro_date ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U32, Engine, age ),
OCL_SVAR( OC_UINT16, Engine, reliability ),
OCL_SVAR( OC_UINT16, Engine, reliability_spd_dec ),
OCL_SVAR( OC_UINT16, Engine, reliability_start ),
OCL_SVAR( OC_UINT16, Engine, reliability_max ),
OCL_SVAR( OC_UINT16, Engine, reliability_final ),
OCL_SVAR( OC_UINT16, Engine, duration_phase_1 ),
OCL_SVAR( OC_UINT16, Engine, duration_phase_2 ),
OCL_SVAR( OC_UINT16, Engine, duration_phase_3 ),
OCL_SVAR( OC_UINT8, Engine, lifelength ),
OCL_SVAR( OC_UINT8, Engine, flags ),
OCL_SVAR( OC_UINT8, Engine, preview_company_rank ),
OCL_SVAR( OC_UINT8, Engine, preview_wait ),
OCL_NULL( 2 ), ///< Junk
OCL_END()
};
static bool LoadOldEngine(LoadgameState *ls, int num)
{
Engine *e = GetTempDataEngine(num);
return LoadChunk(ls, e, engine_chunk);
}
static bool LoadOldEngineName(LoadgameState *ls, int num)
{
Engine *e = GetTempDataEngine(num);
e->name = CopyFromOldName(RemapOldStringID(ReadUint16(ls)));
return true;
}
static const OldChunks subsidy_chunk[] = {
OCL_SVAR( OC_UINT8, Subsidy, cargo_type ),
OCL_SVAR( OC_UINT8, Subsidy, age ),
OCL_SVAR( OC_FILE_U8 | OC_VAR_U16, Subsidy, from ),
OCL_SVAR( OC_FILE_U8 | OC_VAR_U16, Subsidy, to ),
OCL_END()
};
static inline bool LoadOldSubsidy(LoadgameState *ls, int num)
{
return LoadChunk(ls, &_subsidies[num], subsidy_chunk);
}
static const OldChunks game_difficulty_chunk[] = {
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, DifficultySettings, max_no_competitors ),
OCL_NULL( 2), // competitor_start_time
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, DifficultySettings, number_towns ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, DifficultySettings, number_industries ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U32, DifficultySettings, max_loan ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, DifficultySettings, initial_interest ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, DifficultySettings, vehicle_costs ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, DifficultySettings, competitor_speed ),
OCL_NULL( 2), // competitor_intelligence
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, DifficultySettings, vehicle_breakdowns ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, DifficultySettings, subsidy_multiplier ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, DifficultySettings, construction_cost ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, DifficultySettings, terrain_type ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, DifficultySettings, quantity_sea_lakes ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, DifficultySettings, economy ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, DifficultySettings, line_reverse_mode ),
OCL_SVAR( OC_FILE_U16 | OC_VAR_U8, DifficultySettings, disasters ),
OCL_END()
};
static inline bool LoadOldGameDifficulty(LoadgameState *ls, int num)
{
bool ret = LoadChunk(ls, &_settings_game.difficulty, game_difficulty_chunk);
_settings_game.difficulty.max_loan *= 1000;
return ret;
}
static bool LoadOldMapPart1(LoadgameState *ls, int num)
{
uint i;
for (i = 0; i < OLD_MAP_SIZE; i++) {
_m[i].m1 = ReadByte(ls);
}
for (i = 0; i < OLD_MAP_SIZE; i++) {
_m[i].m2 = ReadByte(ls);
}
for (i = 0; i < OLD_MAP_SIZE; i++) {
_old_map3[i * 2] = ReadByte(ls);
_old_map3[i * 2 + 1] = ReadByte(ls);
}
for (i = 0; i < OLD_MAP_SIZE / 4; i++) {
byte b = ReadByte(ls);
_m[i * 4 + 0].m6 = GB(b, 0, 2);
_m[i * 4 + 1].m6 = GB(b, 2, 2);
_m[i * 4 + 2].m6 = GB(b, 4, 2);
_m[i * 4 + 3].m6 = GB(b, 6, 2);
}
return !ls->failed;
}
static bool LoadOldMapPart2(LoadgameState *ls, int num)
{
uint i;
for (i = 0; i < OLD_MAP_SIZE; i++) {
_m[i].type_height = ReadByte(ls);
}
for (i = 0; i < OLD_MAP_SIZE; i++) {
_m[i].m5 = ReadByte(ls);
}
return !ls->failed;
}
static bool LoadTTDPatchExtraChunks(LoadgameState *ls, int num)
{
ReadTTDPatchFlags();
DEBUG(oldloader, 2, "Found %d extra chunk(s)", _old_extra_chunk_nums);
for (int i = 0; i != _old_extra_chunk_nums; i++) {
uint16 id = ReadUint16(ls);
uint32 len = ReadUint32(ls);
switch (id) {
/* List of GRFIDs, used in the savegame. 0x8004 is the new ID
* They are saved in a 'GRFID:4 active:1' format, 5 bytes for each entry */
case 0x2:
case 0x8004: {
/* Skip the first element: TTDP hack for the Action D special variables (FFFF0000 01) */
ReadUint32(ls); ReadByte(ls); len -= 5;
ClearGRFConfigList(&_grfconfig);
while (len != 0) {
uint32 grfid = ReadUint32(ls);
if (ReadByte(ls) == 1) {
GRFConfig *c = CallocT<GRFConfig>(1);
c->grfid = grfid;
c->filename = strdup("TTDP game, no information");
AppendToGRFConfigList(&_grfconfig, c);
DEBUG(oldloader, 3, "TTDPatch game using GRF file with GRFID %0X", BSWAP32(c->grfid));
}
len -= 5;
};
/* Append static NewGRF configuration */
AppendStaticGRFConfigs(&_grfconfig);
} break;
/* TTDPatch version and configuration */
case 0x3:
_ttdp_version = ReadUint32(ls);
DEBUG(oldloader, 3, "Game saved with TTDPatch version %d.%d.%d r%d",
GB(_ttdp_version, 24, 8), GB(_ttdp_version, 20, 4), GB(_ttdp_version, 16, 4), GB(_ttdp_version, 0, 16));
len -= 4;
while (len-- != 0) ReadByte(ls); // skip the configuration
break;
default:
DEBUG(oldloader, 4, "Skipping unknown extra chunk %X", id);
while (len-- != 0) ReadByte(ls);
break;
}
}
return !ls->failed;
}
extern TileIndex _cur_tileloop_tile;
static uint32 _old_cur_town_ctr;
static const OldChunks main_chunk[] = {
OCL_ASSERT( 0 ),
OCL_VAR ( OC_FILE_U16 | OC_VAR_U32, 1, &_date ),
OCL_VAR ( OC_UINT16, 1, &_date_fract ),
OCL_NULL( 600 ), ///< TextEffects
OCL_VAR ( OC_UINT32, 2, &_random.state ),
OCL_ASSERT( 0x264 ),
OCL_CHUNK( 70, LoadOldTown ),
OCL_ASSERT( 0x1C18 ),
OCL_CHUNK(5000, LoadOldOrder ),
OCL_ASSERT( 0x4328 ),
OCL_CHUNK( 1, LoadOldAnimTileList ),
OCL_NULL( 4 ), ///< old end-of-order-list-pointer, no longer in use
OCL_CHUNK( 255, LoadOldDepot ),
OCL_ASSERT( 0x4B26 ),
OCL_VAR ( OC_UINT32, 1, &_old_cur_town_ctr ),
OCL_NULL( 2 ), ///< timer_counter, no longer in use
OCL_NULL( 2 ), ///< land_code, no longer in use
OCL_VAR ( OC_FILE_U16 | OC_VAR_U8, 1, &_age_cargo_skip_counter ),
OCL_VAR ( OC_UINT16, 1, &_tick_counter ),
OCL_VAR ( OC_TILE, 1, &_cur_tileloop_tile ),
OCL_CHUNK( 49, LoadOldPrice ),
OCL_CHUNK( 12, LoadOldCargoPaymentRate ),
OCL_ASSERT( 0x4CBA ),
OCL_CHUNK( 1, LoadOldMapPart1 ),
OCL_ASSERT( 0x48CBA ),
OCL_CHUNK(250, LoadOldStation ),
OCL_CHUNK( 90, LoadOldIndustry ),
OCL_CHUNK( 8, LoadOldCompany ),
OCL_ASSERT( 0x547F2 ),
OCL_CHUNK( 850, LoadOldVehicle ),
OCL_ASSERT( 0x6F0F2 ),
OCL_VAR ( OC_UINT8 | OC_DEREFERENCE_POINTER, 32 * 500, &_old_name_array ),
OCL_NULL( 0x2000 ), ///< Old hash-table, no longer in use
OCL_CHUNK( 40, LoadOldSign ),
OCL_CHUNK(256, LoadOldEngine ),
OCL_VAR ( OC_UINT16, 1, &_vehicle_id_ctr_day ),
OCL_CHUNK( 8, LoadOldSubsidy ),
OCL_VAR ( OC_FILE_U16 | OC_VAR_U32, 1, &_next_competitor_start ),
OCL_VAR ( OC_FILE_I16 | OC_VAR_I32, 1, &_saved_scrollpos_x ),
OCL_VAR ( OC_FILE_I16 | OC_VAR_I32, 1, &_saved_scrollpos_y ),
OCL_VAR ( OC_FILE_U16 | OC_VAR_U8, 1, &_saved_scrollpos_zoom ),
OCL_VAR ( OC_FILE_U32 | OC_VAR_I64, 1, &_economy.max_loan ),
OCL_VAR ( OC_FILE_U32 | OC_VAR_I64, 1, &_economy.max_loan_unround ),
OCL_VAR ( OC_INT16, 1, &_economy.fluct ),
OCL_VAR ( OC_UINT16, 1, &_disaster_delay ),
OCL_NULL( 144 ), ///< cargo-stuff, calculated in InitializeLandscapeVariables
OCL_CHUNK(256, LoadOldEngineName ),
OCL_NULL( 144 ), ///< AI cargo-stuff, calculated in InitializeLandscapeVariables
OCL_NULL( 2 ), ///< Company indexes of companies, no longer in use
OCL_VAR ( OC_FILE_U8 | OC_VAR_U16, 1, &_station_tick_ctr ),
OCL_VAR ( OC_UINT8, 1, &_settings_game.locale.currency ),
OCL_VAR ( OC_UINT8, 1, &_settings_game.locale.units ),
OCL_VAR ( OC_FILE_U8 | OC_VAR_U32, 1, &_cur_company_tick_index ),
OCL_NULL( 2 ), ///< Date stuff, calculated automatically
OCL_NULL( 8 ), ///< Company colors, calculated automatically
OCL_VAR ( OC_UINT8, 1, &_economy.infl_amount ),
OCL_VAR ( OC_UINT8, 1, &_economy.infl_amount_pr ),
OCL_VAR ( OC_UINT8, 1, &_economy.interest_rate ),
OCL_NULL( 1 ), // available airports
OCL_VAR ( OC_UINT8, 1, &_settings_game.vehicle.road_side ),
OCL_VAR ( OC_UINT8, 1, &_settings_game.game_creation.town_name ),
OCL_CHUNK( 1, LoadOldGameDifficulty ),
OCL_ASSERT( 0x77130 ),
OCL_VAR ( OC_UINT8, 1, &_settings_game.difficulty.diff_level ),
OCL_VAR ( OC_UINT8, 1, &_settings_game.game_creation.landscape ),
OCL_VAR ( OC_UINT8, 1, &_trees_tick_ctr ),
OCL_NULL( 1 ), ///< Custom vehicle types yes/no, no longer used
OCL_VAR ( OC_UINT8, 1, &_settings_game.game_creation.snow_line ),
OCL_NULL( 32 ), ///< new_industry_randtable, no longer used (because of new design)
OCL_NULL( 36 ), ///< cargo-stuff, calculated in InitializeLandscapeVariables
OCL_ASSERT( 0x77179 ),
OCL_CHUNK( 1, LoadOldMapPart2 ),
OCL_ASSERT( 0x97179 ),
/* Below any (if available) extra chunks from TTDPatch can follow */
OCL_CHUNK(1, LoadTTDPatchExtraChunks),
OCL_END()
};
static bool LoadOldMain(LoadgameState *ls)
{
DEBUG(oldloader, 3, "Reading main chunk...");
/* Load the biggest chunk */
SmallStackSafeStackAlloc<byte, OLD_MAP_SIZE * 2> map3;
_old_map3 = map3.data;
_old_vehicle_names = NULL;
if (!LoadChunk(ls, NULL, main_chunk)) {
DEBUG(oldloader, 0, "Loading failed");
free(_old_vehicle_names);
return false;
}
DEBUG(oldloader, 3, "Done, converting game data...");
FixOldMapArray();
/* Fix some general stuff */
_settings_game.game_creation.landscape = _settings_game.game_creation.landscape & 0xF;
/* Remap some pointers */
_cur_town_ctr = REMAP_TOWN_IDX(_old_cur_town_ctr);
/* Make sure the available engines are really available, otherwise
* we will get a "new vehicle"-spree. */
Engine *e;
FOR_ALL_ENGINES(e) {
if (_date >= (e->intro_date + DAYS_IN_YEAR)) {
e->flags = (e->flags & ~ENGINE_EXCLUSIVE_PREVIEW) | ENGINE_AVAILABLE;
e->company_avail = (CompanyMask)-1;
}
}
/* Fix the game to be compatible with OpenTTD */
FixOldTowns();
FixOldVehicles();
/* We have a new difficulty setting */
_settings_game.difficulty.town_council_tolerance = Clamp(_settings_game.difficulty.diff_level, 0, 2);
DEBUG(oldloader, 3, "Finished converting game data");
DEBUG(oldloader, 1, "TTD(Patch) savegame successfully converted");
free(_old_vehicle_names);
return true;
}
/**
* Verifies the title has a valid checksum
* @param title title and checksum
* @return true iff the title is valid
* @note the title (incl. checksum) has to be at least 49 (HEADER_SIZE) bytes long!
*/
static bool VerifyOldNameChecksum(char *title)
{
uint16 sum = 0;
for (uint i = 0; i < HEADER_SIZE - 2; i++) {
sum += title[i];
sum = ROL(sum, 1);
}
sum ^= 0xAAAA; // computed checksum
uint16 sum2 = title[HEADER_SIZE - 2]; // checksum in file
SB(sum2, 8, 8, title[HEADER_SIZE - 1]);
return sum == sum2;
}
bool LoadOldSaveGame(const char *file)
{
LoadgameState ls;
DEBUG(oldloader, 3, "Trying to load a TTD(Patch) savegame");
InitLoading(&ls);
/* Open file */
ls.file = fopen(file, "rb");
if (ls.file == NULL) {
DEBUG(oldloader, 0, "Cannot open file '%s'", file);
return false;
}
char temp[HEADER_SIZE];
if (fread(temp, 1, HEADER_SIZE, ls.file) != HEADER_SIZE || !VerifyOldNameChecksum(temp) || !LoadOldMain(&ls)) {
SetSaveLoadError(STR_GAME_SAVELOAD_ERROR_DATA_INTEGRITY_CHECK_FAILED);
fclose(ls.file);
return false;
}
_pause_game = 2;
return true;
}
void GetOldSaveGameName(const char *path, const char *file, char *title, const char *last)
{
char filename[MAX_PATH];
char temp[HEADER_SIZE];
snprintf(filename, lengthof(filename), "%s" PATHSEP "%s", path, file);
FILE *f = fopen(filename, "rb");
temp[0] = '\0'; // name is nul-terminated in savegame ...
if (f == NULL) {
*title = '\0';
return;
}
bool broken = (fread(temp, 1, HEADER_SIZE, f) != HEADER_SIZE || !VerifyOldNameChecksum(temp));
temp[HEADER_SIZE - 2] = '\0'; // ... but it's better to be sure
if (broken) title = strecpy(title, "(broken) ", last);
title = strecpy(title, temp, last);
fclose(f);
}
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