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OpenTTD/src/newgrf.cpp

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/* $Id$ */
#include "stdafx.h"
#include <stdarg.h>
#include "openttd.h"
#include "debug.h"
#include "gfx.h"
#include "fileio.h"
#include "functions.h"
#include "engine.h"
#include "spritecache.h"
#include "station.h"
#include "sprite.h"
#include "newgrf.h"
#include "variables.h"
#include "string.h"
#include "table/strings.h"
#include "bridge.h"
#include "town.h"
#include "economy.h"
#include "newgrf_engine.h"
#include "vehicle.h"
#include "newgrf_text.h"
#include "table/sprites.h"
#include "fontcache.h"
#include "date.h"
#include "currency.h"
#include "landscape.h"
#include "sound.h"
#include "newgrf_config.h"
#include "newgrf_house.h"
#include "newgrf_sound.h"
#include "newgrf_spritegroup.h"
#include "helpers.hpp"
#include "table/town_land.h"
#include "cargotype.h"
/* TTDPatch extended GRF format codec
* (c) Petr Baudis 2004 (GPL'd)
* Changes by Florian octo Forster are (c) by the OpenTTD development team.
*
* Contains portions of documentation by TTDPatch team.
* Thanks especially to Josef Drexler for the documentation as well as a lot
* of help at #tycoon. Also thanks to Michael Blunck for is GRF files which
* served as subject to the initial testing of this codec. */
static int _skip_sprites; // XXX
static uint _file_index; // XXX
SpriteID _signal_base;
SpriteID _coast_base;
static GRFFile *_cur_grffile;
GRFFile *_first_grffile;
static SpriteID _cur_spriteid;
static GrfLoadingStage _cur_stage;
static uint32 _nfo_line;
static GRFConfig *_cur_grfconfig;
/* Miscellaneous GRF features, set by Action 0x0D, parameter 0x9E */
static byte _misc_grf_features = 0;
/* 32 * 8 = 256 flags. Apparently TTDPatch uses this many.. */
static uint32 _ttdpatch_flags[8];
/* Used by Action 0x06 to preload a pseudo sprite and modify its content */
static byte *_preload_sprite = NULL;
/* Set if any vehicle is loaded which uses 2cc (two company colours) */
bool _have_2cc = false;
/* Set if there are any newhouses loaded. */
bool _have_newhouses = false;
/* Default cargo translation table. By default there are 27 possible cargo types */
static const uint _default_cargo_max = 27;
static CargoLabel _default_cargo_list[_default_cargo_max];
enum GrfDataType {
GDT_SOUND,
};
static byte _grf_data_blocks;
static GrfDataType _grf_data_type;
enum grfspec_feature {
GSF_TRAIN,
GSF_ROAD,
GSF_SHIP,
GSF_AIRCRAFT,
GSF_STATION,
GSF_CANAL,
GSF_BRIDGE,
GSF_TOWNHOUSE,
GSF_GLOBALVAR,
GSF_INDUSTRYTILES,
GSF_INDUSTRIES,
GSF_CARGOS,
GSF_SOUNDFX,
};
typedef void (*SpecialSpriteHandler)(byte *buf, int len);
static const uint _vehcounts[4] = {
/* GSF_TRAIN */ NUM_TRAIN_ENGINES,
/* GSF_ROAD */ NUM_ROAD_ENGINES,
/* GSF_SHIP */ NUM_SHIP_ENGINES,
/* GSF_AIRCRAFT */ NUM_AIRCRAFT_ENGINES
};
static const uint _vehshifts[4] = {
/* GSF_TRAIN */ 0,
/* GSF_ROAD */ ROAD_ENGINES_INDEX,
/* GSF_SHIP */ SHIP_ENGINES_INDEX,
/* GSF_AIRCRAFT */ AIRCRAFT_ENGINES_INDEX,
};
enum {
MAX_STATIONS = 256,
};
static uint16 cargo_allowed[TOTAL_NUM_ENGINES];
static uint16 cargo_disallowed[TOTAL_NUM_ENGINES];
/* Contains the GRF ID of the owner of a vehicle if it has been reserved */
static uint32 _grm_engines[TOTAL_NUM_ENGINES];
/** DEBUG() function dedicated to newGRF debugging messages
* Function is essentialy the same as DEBUG(grf, severity, ...) with the
* addition of file:line information when parsing grf files.
* NOTE: for the above reason(s) grfmsg() should ONLY be used for
* loading/parsing grf files, not for runtime debug messages as there
* is no file information available during that time.
* @param severity debugging severity level, see debug.h
* @param debugging message in printf() format */
void CDECL grfmsg(int severity, const char *str, ...)
{
char buf[1024];
va_list va;
va_start(va, str);
vsnprintf(buf, sizeof(buf), str, va);
va_end(va);
DEBUG(grf, severity, "[%s:%d] %s", _cur_grfconfig->filename, _nfo_line, buf);
}
static inline bool check_length(int real, int wanted, const char *str)
{
if (real >= wanted) return true;
grfmsg(0, "%s: Invalid pseudo sprite length %d (expected %d)!", str, real, wanted);
return false;
}
static inline byte grf_load_byte(byte **buf)
{
return *(*buf)++;
}
static uint16 grf_load_word(byte **buf)
{
uint16 val = grf_load_byte(buf);
return val | (grf_load_byte(buf) << 8);
}
static uint16 grf_load_extended(byte** buf)
{
uint16 val;
val = grf_load_byte(buf);
if (val == 0xFF) val = grf_load_word(buf);
return val;
}
static uint32 grf_load_dword(byte **buf)
{
uint32 val = grf_load_word(buf);
return val | (grf_load_word(buf) << 16);
}
static uint32 grf_load_var(byte size, byte **buf)
{
switch (size) {
case 1: return grf_load_byte(buf);
case 2: return grf_load_word(buf);
case 4: return grf_load_dword(buf);
default:
NOT_REACHED();
return 0;
}
}
static const char *grf_load_string(byte **buf, size_t max_len)
{
const char *string = *(const char **)buf;
size_t string_length = ttd_strnlen(string, max_len);
if (string_length == max_len) {
/* String was not NUL terminated, so make sure it is now. */
(*buf)[string_length - 1] = '\0';
grfmsg(7, "String was not terminated with a zero byte.");
} else {
/* Increase the string length to include the NUL byte. */
string_length++;
}
*buf += string_length;
return string;
}
static GRFFile *GetFileByGRFID(uint32 grfid)
{
GRFFile *file;
for (file = _first_grffile; file != NULL; file = file->next) {
if (file->grfid == grfid) break;
}
return file;
}
static GRFFile *GetFileByFilename(const char *filename)
{
GRFFile *file;
for (file = _first_grffile; file != NULL; file = file->next) {
if (strcmp(file->filename, filename) == 0) break;
}
return file;
}
/** Used when setting an object's property to map to the GRF's strings
* while taking in consideration the "drift" between TTDPatch string system and OpenTTD's one
* @param str StringID that we want to have the equivalent in OoenTTD
* @return the properly adjusted StringID
*/
static StringID MapGRFStringID(StringID str)
{
/* 0xD0 and 0xDC stand for all the TextIDs in the range
* of 0xD000 (misc graphics texts) and 0xDC00 (misc persistent texts).
* These strings are unique to each grf file, and thus require to be used with the
* grfid in which they are declared */
if (GB(str, 8, 8) == 0xD0 || GB(str, 8, 8) == 0xDC) {
return GetGRFStringID(_cur_grffile->grfid, str);
}
/* Map building names according to our lang file changes
* 0x200F = Tall Office Block, first house name in the original data, the one that TTDPatch stil uses
* 0x201F = Old houses is the last house name.
* OpenTTD does not have exactly the same order aymore, so, the code below allows
* to compensate for the difference */
if (str >= 0x200F && str <= 0x201F) return str + (STR_200F_TALL_OFFICE_BLOCK - 0x200F);
return str;
}
typedef bool (*VCI_Handler)(uint engine, int numinfo, int prop, byte **buf, int len);
#define FOR_EACH_OBJECT for (i = 0; i < numinfo; i++)
static void dewagonize(int condition, int engine)
{
EngineInfo *ei = &_engine_info[engine];
RailVehicleInfo *rvi = &_rail_vehicle_info[engine];
if (condition != 0) {
ei->unk2 &= ~0x80;
if (rvi->railveh_type == RAILVEH_WAGON)
rvi->railveh_type = RAILVEH_SINGLEHEAD;
} else {
ei->unk2 |= 0x80;
rvi->railveh_type = RAILVEH_WAGON;
}
}
static bool RailVehicleChangeInfo(uint engine, int numinfo, int prop, byte **bufp, int len)
{
EngineInfo *ei = &_engine_info[engine];
RailVehicleInfo *rvi = &_rail_vehicle_info[engine];
byte *buf = *bufp;
int i;
bool ret = false;
switch (prop) {
case 0x05: /* Track type */
FOR_EACH_OBJECT {
uint8 tracktype = grf_load_byte(&buf);
switch (tracktype) {
case 0: rvi[i].railtype = rvi[i].engclass == 2 ? RAILTYPE_ELECTRIC : RAILTYPE_RAIL; break;
case 1: rvi[i].railtype = RAILTYPE_MONO; break;
case 2: rvi[i].railtype = RAILTYPE_MAGLEV; break;
default:
grfmsg(1, "RailVehicleChangeInfo: Invalid track type %d specified, ignoring", tracktype);
break;
}
}
break;
case 0x08: /* AI passenger service */
/* TODO */
FOR_EACH_OBJECT grf_load_byte(&buf);
ret = true;
break;
case 0x09: /* Speed (1 unit is 1 kmh) */
FOR_EACH_OBJECT {
uint16 speed = grf_load_word(&buf);
if (speed == 0xFFFF) speed = 0;
rvi[i].max_speed = speed;
}
break;
case 0x0B: /* Power */
FOR_EACH_OBJECT {
uint16 power = grf_load_word(&buf);
if (rvi[i].railveh_type == RAILVEH_MULTIHEAD) power /= 2;
rvi[i].power = power;
dewagonize(power, engine + i);
}
break;
case 0x0D: /* Running cost factor */
FOR_EACH_OBJECT {
uint8 runcostfact = grf_load_byte(&buf);
if (rvi[i].railveh_type == RAILVEH_MULTIHEAD) runcostfact /= 2;
rvi[i].running_cost_base = runcostfact;
}
break;
case 0x0E: /* Running cost base */
FOR_EACH_OBJECT {
uint32 base = grf_load_dword(&buf);
switch (base) {
case 0x4C30: rvi[i].running_cost_class = 0; break;
case 0x4C36: rvi[i].running_cost_class = 1; break;
case 0x4C3C: rvi[i].running_cost_class = 2; break;
case 0: break; /* Used by wagons */
default:
grfmsg(1, "RailVehicleChangeInfo: Unsupported running cost base 0x%04X, ignoring", base);
break;
}
}
break;
case 0x12: /* Sprite ID */
FOR_EACH_OBJECT {
uint8 spriteid = grf_load_byte(&buf);
/* TTD sprite IDs point to a location in a 16bit array, but we use it
* as an array index, so we need it to be half the original value. */
if (spriteid < 0xFD) spriteid >>= 1;
rvi[i].image_index = spriteid;
}
break;
case 0x13: /* Dual-headed */
FOR_EACH_OBJECT {
uint8 dual = grf_load_byte(&buf);
if (dual != 0) {
if (rvi[i].railveh_type != RAILVEH_MULTIHEAD) {
// adjust power and running cost if needed
rvi[i].power /= 2;
rvi[i].running_cost_base /= 2;
}
rvi[i].railveh_type = RAILVEH_MULTIHEAD;
} else {
if (rvi[i].railveh_type == RAILVEH_MULTIHEAD) {
// adjust power and running cost if needed
rvi[i].power *= 2;
rvi[i].running_cost_base *= 2;
}
rvi[i].railveh_type = rvi[i].power == 0 ?
RAILVEH_WAGON : RAILVEH_SINGLEHEAD;
}
}
break;
case 0x14: /* Cargo capacity */
FOR_EACH_OBJECT rvi[i].capacity = grf_load_byte(&buf);
break;
case 0x15: /* Cargo type */
FOR_EACH_OBJECT {
uint8 ctype = grf_load_byte(&buf);
if (ctype < NUM_CARGO && HASBIT(_cargo_mask, ctype)) {
rvi[i].cargo_type = ctype;
} else {
rvi[i].cargo_type = CT_INVALID;
grfmsg(2, "RailVehicleChangeInfo: Invalid cargo type %d, using first refittable", ctype);
}
}
break;
case 0x16: /* Weight */
FOR_EACH_OBJECT SB(rvi[i].weight, 0, 8, grf_load_byte(&buf));
break;
case 0x17: /* Cost factor */
FOR_EACH_OBJECT rvi[i].base_cost = grf_load_byte(&buf);
break;
case 0x18: /* AI rank */
FOR_EACH_OBJECT rvi[i].ai_rank = grf_load_byte(&buf);
break;
case 0x19: /* Engine traction type */
/* What do the individual numbers mean?
* 0x00 .. 0x07: Steam
* 0x08 .. 0x27: Diesel
* 0x28 .. 0x31: Electric
* 0x32 .. 0x37: Monorail
* 0x38 .. 0x41: Maglev
*/
FOR_EACH_OBJECT {
uint8 traction = grf_load_byte(&buf);
int engclass;
if (traction <= 0x07) {
engclass = 0;
} else if (traction <= 0x27) {
engclass = 1;
} else if (traction <= 0x31) {
engclass = 2;
} else if (traction <= 0x41) {
engclass = 2;
} else {
break;
}
if (rvi[i].railtype == RAILTYPE_RAIL && engclass == 2) rvi[i].railtype = RAILTYPE_ELECTRIC;
if (rvi[i].railtype == RAILTYPE_ELECTRIC && engclass != 2) rvi[i].railtype = RAILTYPE_RAIL;
rvi[i].engclass = engclass;
}
break;
case 0x1A: /* Alter purchase list sort order */
FOR_EACH_OBJECT {
EngineID pos = grf_load_byte(&buf);
if (pos < NUM_TRAIN_ENGINES) {
AlterRailVehListOrder(engine + i, pos);
} else {
grfmsg(2, "RailVehicleChangeInfo: Invalid train engine ID %d, ignoring", pos);
}
}
break;
case 0x1B: /* Powered wagons power bonus */
FOR_EACH_OBJECT rvi[i].pow_wag_power = grf_load_word(&buf);
break;
case 0x1C: /* Refit cost */
FOR_EACH_OBJECT ei[i].refit_cost = grf_load_byte(&buf);
break;
case 0x1D: /* Refit cargo */
FOR_EACH_OBJECT ei[i].refit_mask = grf_load_dword(&buf);
break;
case 0x1E: /* Callback */
FOR_EACH_OBJECT ei[i].callbackmask = grf_load_byte(&buf);
break;
case 0x1F: /* Tractive effort coefficient */
FOR_EACH_OBJECT rvi[i].tractive_effort = grf_load_byte(&buf);
break;
case 0x21: /* Shorter vehicle */
FOR_EACH_OBJECT rvi[i].shorten_factor = grf_load_byte(&buf);
break;
case 0x22: /* Visual effect */
// see note in engine.h about rvi->visual_effect
FOR_EACH_OBJECT rvi[i].visual_effect = grf_load_byte(&buf);
break;
case 0x23: /* Powered wagons weight bonus */
FOR_EACH_OBJECT rvi[i].pow_wag_weight = grf_load_byte(&buf);
break;
case 0x24: /* High byte of vehicle weight */
FOR_EACH_OBJECT {
byte weight = grf_load_byte(&buf);
if (weight > 4) {
grfmsg(2, "RailVehicleChangeInfo: Nonsensical weight of %d tons, ignoring", weight << 8);
} else {
SB(rvi[i].weight, 8, 8, weight);
}
}
break;
case 0x25: /* User-defined bit mask to set when checking veh. var. 42 */
FOR_EACH_OBJECT rvi[i].user_def_data = grf_load_byte(&buf);
break;
case 0x27: /* Miscellaneous flags */
FOR_EACH_OBJECT {
ei[i].misc_flags = grf_load_byte(&buf);
if (HASBIT(ei[i].misc_flags, EF_USES_2CC)) _have_2cc = true;
}
break;
case 0x28: /* Cargo classes allowed */
FOR_EACH_OBJECT cargo_allowed[engine + i] = grf_load_word(&buf);
break;
case 0x29: /* Cargo classes disallowed */
FOR_EACH_OBJECT cargo_disallowed[engine + i] = grf_load_word(&buf);
break;
case 0x2A: /* Long format introduction date (days since year 0) */
FOR_EACH_OBJECT ei[i].base_intro = grf_load_dword(&buf);
break;
/* TODO */
/* Fall-through for unimplemented one byte long properties. */
case 0x20: /* Air drag */
case 0x26: /* Retire vehicle early */
/* TODO */
FOR_EACH_OBJECT grf_load_byte(&buf);
ret = true;
break;
default:
ret = true;
break;
}
*bufp = buf;
return ret;
}
static bool RoadVehicleChangeInfo(uint engine, int numinfo, int prop, byte **bufp, int len)
{
EngineInfo *ei = &_engine_info[ROAD_ENGINES_INDEX + engine];
RoadVehicleInfo *rvi = &_road_vehicle_info[engine];
byte *buf = *bufp;
int i;
bool ret = false;
switch (prop) {
case 0x08: /* Speed (1 unit is 0.5 kmh) */
FOR_EACH_OBJECT rvi[i].max_speed = grf_load_byte(&buf);
break;
case 0x09: /* Running cost factor */
FOR_EACH_OBJECT rvi[i].running_cost = grf_load_byte(&buf);
break;
case 0x0A: /* Running cost base */
/* TODO: I have no idea. --pasky */
FOR_EACH_OBJECT grf_load_dword(&buf);
ret = true;
break;
case 0x0E: /* Sprite ID */
FOR_EACH_OBJECT {
uint8 spriteid = grf_load_byte(&buf);
// cars have different custom id in the GRF file
if (spriteid == 0xFF) spriteid = 0xFD;
if (spriteid < 0xFD) spriteid >>= 1;
rvi[i].image_index = spriteid;
}
break;
case 0x0F: /* Cargo capacity */
FOR_EACH_OBJECT rvi[i].capacity = grf_load_byte(&buf);
break;
case 0x10: /* Cargo type */
FOR_EACH_OBJECT {
uint8 cargo = grf_load_byte(&buf);
if (cargo < NUM_CARGO && HASBIT(_cargo_mask, cargo)) {
rvi[i].cargo_type = cargo;
} else {
rvi[i].cargo_type = CT_INVALID;
grfmsg(2, "RoadVehicleChangeInfo: Invalid cargo type %d, using first refittable", cargo);
}
}
break;
case 0x11: /* Cost factor */
FOR_EACH_OBJECT rvi[i].base_cost = grf_load_byte(&buf); // ?? is it base_cost?
break;
case 0x12: /* SFX */
FOR_EACH_OBJECT rvi[i].sfx = (SoundFx)grf_load_byte(&buf);
break;
case 0x13: /* Power in 10hp */
case 0x14: /* Weight in 1/4 tons */
case 0x15: /* Speed in mph*0.8 */
/* TODO: Support for road vehicles realistic power
* computations (called rvpower in TTDPatch) is just
* missing in OTTD yet. --pasky */
FOR_EACH_OBJECT grf_load_byte(&buf);
ret = true;
break;
case 0x16: /* Cargos available for refitting */
FOR_EACH_OBJECT ei[i].refit_mask = grf_load_dword(&buf);
break;
case 0x17: /* Callback mask */
FOR_EACH_OBJECT ei[i].callbackmask = grf_load_byte(&buf);
break;
case 0x1A: /* Refit cost */
FOR_EACH_OBJECT ei[i].refit_cost = grf_load_byte(&buf);
break;
case 0x1C: /* Miscellaneous flags */
FOR_EACH_OBJECT {
ei[i].misc_flags = grf_load_byte(&buf);
if (HASBIT(ei[i].misc_flags, EF_USES_2CC)) _have_2cc = true;
}
break;
case 0x1D: /* Cargo classes allowed */
FOR_EACH_OBJECT cargo_allowed[ROAD_ENGINES_INDEX + engine + i] = grf_load_word(&buf);
break;
case 0x1E: /* Cargo classes disallowed */
FOR_EACH_OBJECT cargo_disallowed[ROAD_ENGINES_INDEX + engine + i] = grf_load_word(&buf);
break;
case 0x1F: /* Long format introduction date (days since year 0) */
FOR_EACH_OBJECT ei[i].base_intro = grf_load_dword(&buf);
break;
case 0x18: /* Tractive effort */
case 0x19: /* Air drag */
case 0x1B: /* Retire vehicle early */
/* TODO */
FOR_EACH_OBJECT grf_load_byte(&buf);
ret = true;
break;
default:
ret = true;
break;
}
*bufp = buf;
return ret;
}
static bool ShipVehicleChangeInfo(uint engine, int numinfo, int prop, byte **bufp, int len)
{
EngineInfo *ei = &_engine_info[SHIP_ENGINES_INDEX + engine];
ShipVehicleInfo *svi = &_ship_vehicle_info[engine];
byte *buf = *bufp;
int i;
bool ret = false;
//printf("e %x prop %x?\n", engine, prop);
switch (prop) {
case 0x08: /* Sprite ID */
FOR_EACH_OBJECT {
uint8 spriteid = grf_load_byte(&buf);
// ships have different custom id in the GRF file
if (spriteid == 0xFF) spriteid = 0xFD;
if (spriteid < 0xFD) spriteid >>= 1;
svi[i].image_index = spriteid;
}
break;
case 0x09: /* Refittable */
FOR_EACH_OBJECT svi[i].refittable = (grf_load_byte(&buf) != 0);
break;
case 0x0A: /* Cost factor */
FOR_EACH_OBJECT svi[i].base_cost = grf_load_byte(&buf); // ?? is it base_cost?
break;
case 0x0B: /* Speed (1 unit is 0.5 kmh) */
FOR_EACH_OBJECT svi[i].max_speed = grf_load_byte(&buf);
break;
case 0x0C: /* Cargo type */
FOR_EACH_OBJECT {
uint8 cargo = grf_load_byte(&buf);
if (cargo < NUM_CARGO && HASBIT(_cargo_mask, cargo)) {
svi[i].cargo_type = cargo;
} else {
svi[i].cargo_type = CT_INVALID;
grfmsg(2, "ShipVehicleChangeInfo: Invalid cargo type %d, using first refittable", cargo);
}
}
break;
case 0x0D: /* Cargo capacity */
FOR_EACH_OBJECT svi[i].capacity = grf_load_word(&buf);
break;
case 0x0F: /* Running cost factor */
FOR_EACH_OBJECT svi[i].running_cost = grf_load_byte(&buf);
break;
case 0x10: /* SFX */
FOR_EACH_OBJECT svi[i].sfx = (SoundFx)grf_load_byte(&buf);
break;
case 0x11: /* Cargos available for refitting */
FOR_EACH_OBJECT ei[i].refit_mask = grf_load_dword(&buf);
break;
case 0x12: /* Callback mask */
FOR_EACH_OBJECT ei[i].callbackmask = grf_load_byte(&buf);
break;
case 0x13: /* Refit cost */
FOR_EACH_OBJECT ei[i].refit_cost = grf_load_byte(&buf);
break;
case 0x17: /* Miscellaneous flags */
FOR_EACH_OBJECT {
ei[i].misc_flags = grf_load_byte(&buf);
if (HASBIT(ei[i].misc_flags, EF_USES_2CC)) _have_2cc = true;
}
break;
case 0x18: /* Cargo classes allowed */
FOR_EACH_OBJECT cargo_allowed[SHIP_ENGINES_INDEX + engine + i] = grf_load_word(&buf);
break;
case 0x19: /* Cargo classes disallowed */
FOR_EACH_OBJECT cargo_disallowed[SHIP_ENGINES_INDEX + engine + i] = grf_load_word(&buf);
break;
case 0x1A: /* Long format introduction date (days since year 0) */
FOR_EACH_OBJECT ei[i].base_intro = grf_load_dword(&buf);
break;
case 0x14: /* Ocean speed fraction */
case 0x15: /* Canal speed fraction */
case 0x16: /* Retire vehicle early */
/* TODO */
FOR_EACH_OBJECT grf_load_byte(&buf);
ret = true;
break;
default:
ret = true;
break;
}
*bufp = buf;
return ret;
}
static bool AircraftVehicleChangeInfo(uint engine, int numinfo, int prop, byte **bufp, int len)
{
EngineInfo *ei = &_engine_info[AIRCRAFT_ENGINES_INDEX + engine];
AircraftVehicleInfo *avi = &_aircraft_vehicle_info[engine];
byte *buf = *bufp;
int i;
bool ret = false;
//printf("e %x prop %x?\n", engine, prop);
switch (prop) {
case 0x08: /* Sprite ID */
FOR_EACH_OBJECT {
uint8 spriteid = grf_load_byte(&buf);
// aircraft have different custom id in the GRF file
if (spriteid == 0xFF) spriteid = 0xFD;
if (spriteid < 0xFD) spriteid >>= 1;
avi[i].image_index = spriteid;
}
break;
case 0x09: /* Helicopter */
FOR_EACH_OBJECT {
if (grf_load_byte(&buf) == 0) {
avi[i].subtype = AIR_HELI;
} else {
SB(avi[i].subtype, 0, 1, 1); // AIR_CTOL
}
}
break;
case 0x0A: /* Large */
FOR_EACH_OBJECT SB(avi[i].subtype, 1, 1, (grf_load_byte(&buf) != 0 ? 1 : 0)); // AIR_FAST
break;
case 0x0B: /* Cost factor */
FOR_EACH_OBJECT avi[i].base_cost = grf_load_byte(&buf); // ?? is it base_cost?
break;
case 0x0C: /* Speed (1 unit is 8 mph, we translate to 1 unit is 1 km/h) */
FOR_EACH_OBJECT avi[i].max_speed = (grf_load_byte(&buf) * 129) / 10;
break;
case 0x0D: /* Acceleration */
FOR_EACH_OBJECT avi[i].acceleration = (grf_load_byte(&buf) * 129) / 10;
break;
case 0x0E: /* Running cost factor */
FOR_EACH_OBJECT avi[i].running_cost = grf_load_byte(&buf);
break;
case 0x0F: /* Passenger capacity */
FOR_EACH_OBJECT avi[i].passenger_capacity = grf_load_word(&buf);
break;
case 0x11: /* Mail capacity */
FOR_EACH_OBJECT avi[i].mail_capacity = grf_load_byte(&buf);
break;
case 0x12: /* SFX */
FOR_EACH_OBJECT avi[i].sfx = (SoundFx)grf_load_byte(&buf);
break;
case 0x13: /* Cargos available for refitting */
FOR_EACH_OBJECT ei[i].refit_mask = grf_load_dword(&buf);
break;
case 0x14: /* Callback mask */
FOR_EACH_OBJECT ei[i].callbackmask = grf_load_byte(&buf);
break;
case 0x15: /* Refit cost */
FOR_EACH_OBJECT ei[i].refit_cost = grf_load_byte(&buf);
break;
case 0x17: /* Miscellaneous flags */
FOR_EACH_OBJECT {
ei[i].misc_flags = grf_load_byte(&buf);
if (HASBIT(ei[i].misc_flags, EF_USES_2CC)) _have_2cc = true;
}
break;
case 0x18: /* Cargo classes allowed */
FOR_EACH_OBJECT cargo_allowed[AIRCRAFT_ENGINES_INDEX + engine + i] = grf_load_word(&buf);
break;
case 0x19: /* Cargo classes disallowed */
FOR_EACH_OBJECT cargo_disallowed[AIRCRAFT_ENGINES_INDEX + engine + i] = grf_load_word(&buf);
break;
case 0x1A: /* Long format introduction date (days since year 0) */
FOR_EACH_OBJECT ei[i].base_intro = grf_load_dword(&buf);
break;
case 0x16: /* Retire vehicle early */
/* TODO */
FOR_EACH_OBJECT grf_load_byte(&buf);
ret = true;
break;
default:
ret = true;
break;
}
*bufp = buf;
return ret;
}
static bool StationChangeInfo(uint stid, int numinfo, int prop, byte **bufp, int len)
{
StationSpec **statspec;
byte *buf = *bufp;
int i;
bool ret = false;
if (stid + numinfo > MAX_STATIONS) {
grfmsg(1, "StationChangeInfo: Station %u is invalid, max %u, ignoring", stid + numinfo, MAX_STATIONS);
return false;
}
/* Allocate station specs if necessary */
if (_cur_grffile->stations == NULL) _cur_grffile->stations = CallocT<StationSpec*>(MAX_STATIONS);
statspec = &_cur_grffile->stations[stid];
if (prop != 0x08) {
/* Check that all stations we are modifying are defined. */
FOR_EACH_OBJECT {
if (statspec[i] == NULL) {
grfmsg(2, "StationChangeInfo: Attempt to modify undefined station %u, ignoring", stid + i);
return false;
}
}
}
switch (prop) {
case 0x08: /* Class ID */
FOR_EACH_OBJECT {
/* Property 0x08 is special; it is where the station is allocated */
if (statspec[i] == NULL) statspec[i] = CallocT<StationSpec>(1);
/* Swap classid because we read it in BE meaning WAYP or DFLT */
uint32 classid = grf_load_dword(&buf);
statspec[i]->sclass = AllocateStationClass(BSWAP32(classid));
}
break;
case 0x09: /* Define sprite layout */
FOR_EACH_OBJECT {
StationSpec *statspec = _cur_grffile->stations[stid + i];
statspec->tiles = grf_load_extended(&buf);
statspec->renderdata = CallocT<DrawTileSprites>(statspec->tiles);
statspec->copied_renderdata = false;
for (uint t = 0; t < statspec->tiles; t++) {
DrawTileSprites *dts = &statspec->renderdata[t];
uint seq_count = 0;
dts->seq = NULL;
dts->ground_sprite = grf_load_word(&buf);
dts->ground_pal = grf_load_word(&buf);
if (dts->ground_sprite == 0) continue;
if (HASBIT(dts->ground_pal, 15)) {
CLRBIT(dts->ground_pal, 15);
SETBIT(dts->ground_sprite, SPRITE_MODIFIER_USE_OFFSET);
}
while (buf < *bufp + len) {
DrawTileSeqStruct *dtss;
// no relative bounding box support
dts->seq = ReallocT((DrawTileSeqStruct*)dts->seq, ++seq_count);
dtss = (DrawTileSeqStruct*) &dts->seq[seq_count - 1];
dtss->delta_x = grf_load_byte(&buf);
if ((byte) dtss->delta_x == 0x80) break;
dtss->delta_y = grf_load_byte(&buf);
dtss->delta_z = grf_load_byte(&buf);
dtss->size_x = grf_load_byte(&buf);
dtss->size_y = grf_load_byte(&buf);
dtss->size_z = grf_load_byte(&buf);
dtss->image = grf_load_word(&buf);
dtss->pal = grf_load_word(&buf);
/* Remap flags as ours collide */
if (HASBIT(dtss->pal, 15)) {
CLRBIT(dtss->pal, 15);
SETBIT(dtss->image, SPRITE_MODIFIER_USE_OFFSET);
}
if (HASBIT(dtss->image, 15)) {
CLRBIT(dtss->image, 15);
SETBIT(dtss->image, PALETTE_MODIFIER_COLOR);
}
if (HASBIT(dtss->image, 14)) {
CLRBIT(dtss->image, 14);
SETBIT(dtss->image, PALETTE_MODIFIER_TRANSPARENT);
}
}
}
}
break;
case 0x0A: /* Copy sprite layout */
FOR_EACH_OBJECT {
StationSpec *statspec = _cur_grffile->stations[stid + i];
byte srcid = grf_load_byte(&buf);
const StationSpec *srcstatspec = _cur_grffile->stations[srcid];
statspec->tiles = srcstatspec->tiles;
statspec->renderdata = srcstatspec->renderdata;
statspec->copied_renderdata = true;
}
break;
case 0x0B: /* Callback mask */
FOR_EACH_OBJECT statspec[i]->callbackmask = grf_load_byte(&buf);
break;
case 0x0C: /* Disallowed number of platforms */
FOR_EACH_OBJECT statspec[i]->disallowed_platforms = grf_load_byte(&buf);
break;
case 0x0D: /* Disallowed platform lengths */
FOR_EACH_OBJECT statspec[i]->disallowed_lengths = grf_load_byte(&buf);
break;
case 0x0E: /* Define custom layout */
FOR_EACH_OBJECT {
StationSpec *statspec = _cur_grffile->stations[stid + i];
statspec->copied_layouts = false;
while (buf < *bufp + len) {
byte length = grf_load_byte(&buf);
byte number = grf_load_byte(&buf);
StationLayout layout;
uint l, p;
if (length == 0 || number == 0) break;
//debug("l %d > %d ?", length, stat->lengths);
if (length > statspec->lengths) {
statspec->platforms = ReallocT(statspec->platforms, length);
memset(statspec->platforms + statspec->lengths, 0, length - statspec->lengths);
statspec->layouts = ReallocT(statspec->layouts, length);
memset(statspec->layouts + statspec->lengths, 0,
(length - statspec->lengths) * sizeof(*statspec->layouts));
statspec->lengths = length;
}
l = length - 1; // index is zero-based
//debug("p %d > %d ?", number, stat->platforms[l]);
if (number > statspec->platforms[l]) {
statspec->layouts[l] = ReallocT(statspec->layouts[l], number);
// We expect NULL being 0 here, but C99 guarantees that.
memset(statspec->layouts[l] + statspec->platforms[l], 0,
(number - statspec->platforms[l]) * sizeof(**statspec->layouts));
statspec->platforms[l] = number;
}
p = 0;
layout = MallocT<byte>(length * number);
for (l = 0; l < length; l++) {
for (p = 0; p < number; p++) {
layout[l * number + p] = grf_load_byte(&buf);
}
}
l--;
p--;
free(statspec->layouts[l][p]);
statspec->layouts[l][p] = layout;
}
}
break;
case 0x0F: /* Copy custom layout */
FOR_EACH_OBJECT {
StationSpec *statspec = _cur_grffile->stations[stid + i];
byte srcid = grf_load_byte(&buf);
const StationSpec *srcstatspec = _cur_grffile->stations[srcid];
statspec->lengths = srcstatspec->lengths;
statspec->platforms = srcstatspec->platforms;
statspec->layouts = srcstatspec->layouts;
statspec->copied_layouts = true;
}
break;
case 0x10: /* Little/lots cargo threshold */
FOR_EACH_OBJECT statspec[i]->cargo_threshold = grf_load_word(&buf);
break;
case 0x11: /* Pylon placement */
FOR_EACH_OBJECT statspec[i]->pylons = grf_load_byte(&buf);
break;
case 0x12: /* Cargo types for random triggers */
FOR_EACH_OBJECT statspec[i]->cargo_triggers = grf_load_dword(&buf);
break;
case 0x13: /* General flags */
FOR_EACH_OBJECT statspec[i]->flags = grf_load_byte(&buf);
break;
case 0x14: /* Overhead wire placement */
FOR_EACH_OBJECT statspec[i]->wires = grf_load_byte(&buf);
break;
case 0x15: /* Blocked tiles */
FOR_EACH_OBJECT statspec[i]->blocked = grf_load_byte(&buf);
break;
case 0x16: /* TODO Animation info */
FOR_EACH_OBJECT grf_load_word(&buf);
ret = true;
break;
case 0x17: /* TODO Animation speed */
FOR_EACH_OBJECT grf_load_byte(&buf);
ret = true;
break;
case 0x18: /* TODO Animation triggers */
FOR_EACH_OBJECT grf_load_word(&buf);
ret = true;
break;
default:
ret = true;
break;
}
*bufp = buf;
return ret;
}
static bool BridgeChangeInfo(uint brid, int numinfo, int prop, byte **bufp, int len)
{
byte *buf = *bufp;
int i;
bool ret = false;
switch (prop) {
case 0x08: /* Year of availability */
FOR_EACH_OBJECT _bridge[brid + i].avail_year = ORIGINAL_BASE_YEAR + grf_load_byte(&buf);
break;
case 0x09: /* Minimum length */
FOR_EACH_OBJECT _bridge[brid + i].min_length = grf_load_byte(&buf);
break;
case 0x0A: /* Maximum length */
FOR_EACH_OBJECT _bridge[brid + i].max_length = grf_load_byte(&buf);
break;
case 0x0B: /* Cost factor */
FOR_EACH_OBJECT _bridge[brid + i].price = grf_load_byte(&buf);
break;
case 0x0C: /* Maximum speed */
FOR_EACH_OBJECT _bridge[brid + i].speed = grf_load_word(&buf);
break;
case 0x0D: /* Bridge sprite tables */
FOR_EACH_OBJECT {
Bridge *bridge = &_bridge[brid + i];
byte tableid = grf_load_byte(&buf);
byte numtables = grf_load_byte(&buf);
if (bridge->sprite_table == NULL) {
/* Allocate memory for sprite table pointers and zero out */
bridge->sprite_table = CallocT<PalSpriteID*>(7);
}
for (; numtables-- != 0; tableid++) {
if (tableid >= 7) { // skip invalid data
grfmsg(1, "BridgeChangeInfo: Table %d >= 7, skipping", tableid);
for (byte sprite = 0; sprite < 32; sprite++) grf_load_dword(&buf);
continue;
}
if (bridge->sprite_table[tableid] == NULL) {
bridge->sprite_table[tableid] = MallocT<PalSpriteID>(32);
}
for (byte sprite = 0; sprite < 32; sprite++) {
SpriteID image = grf_load_word(&buf);
SpriteID pal = grf_load_word(&buf);
if (HASBIT(pal, 15)) {
SETBIT(image, PALETTE_MODIFIER_TRANSPARENT);
}
/* Clear old color modifer bit */
CLRBIT(image, 15);
bridge->sprite_table[tableid][sprite].sprite = image;
bridge->sprite_table[tableid][sprite].pal = pal;
}
}
}
break;
case 0x0E: /* Flags; bit 0 - disable far pillars */
FOR_EACH_OBJECT _bridge[brid + i].flags = grf_load_byte(&buf);
break;
case 0x0F: /* Long format year of availability (year since year 0) */
FOR_EACH_OBJECT _bridge[brid + i].avail_year = clamp(grf_load_dword(&buf), MIN_YEAR, MAX_YEAR);
break;
default:
ret = true;
}
*bufp = buf;
return ret;
}
static bool TownHouseChangeInfo(uint hid, int numinfo, int prop, byte **bufp, int len)
{
HouseSpec **housespec;
byte *buf = *bufp;
int i;
bool ret = false;
if (hid + numinfo >= HOUSE_MAX) {
grfmsg(1, "TownHouseChangeInfo: Too many houses loaded (%u), max (%u). Ignoring.", hid + numinfo, HOUSE_MAX-1);
return false;
}
/* Allocate house specs if they haven't been allocated already. */
if (_cur_grffile->housespec == NULL) {
_cur_grffile->housespec = CallocT<HouseSpec*>(HOUSE_MAX);
/* Reset any overrides that have been set. */
ResetHouseOverrides();
}
housespec = &_cur_grffile->housespec[hid];
if (prop != 0x08) {
/* Check that all the houses being modified have been defined. */
FOR_EACH_OBJECT {
if (housespec[i] == NULL) {
grfmsg(2, "TownHouseChangeInfo: Attempt to modify undefined house %u. Ignoring.", hid + i);
return false;
}
}
}
switch (prop) {
case 0x08: // Substitute building type, and definition of a new house
FOR_EACH_OBJECT {
byte subs_id = grf_load_byte(&buf);
if (subs_id == 0xFF) {
/* Instead of defining a new house, a substitute house id
* of 0xFF disables the old house with the current id. */
_house_specs[hid + i].enabled = false;
continue;
} else if (subs_id >= NEW_HOUSE_OFFSET) {
/* The substitute id must be one of the original houses. */
grfmsg(2, "TownHouseChangeInfo: Attempt to use new house %u as substitute house for %u. Ignoring.", subs_id, hid + i);
return false;
}
/* Allocate space for this house. */
if (housespec[i] == NULL) housespec[i] = CallocT<HouseSpec>(1);
memcpy(housespec[i], &_house_specs[subs_id], sizeof(_house_specs[subs_id]));
housespec[i]->enabled = true;
housespec[i]->local_id = hid + i;
housespec[i]->substitute_id = subs_id;
housespec[i]->grffile = _cur_grffile;
housespec[i]->random_colour[0] = 0x04; // those 4 random colours are the base colour
housespec[i]->random_colour[1] = 0x08; // for all new houses
housespec[i]->random_colour[2] = 0x0C; // they stand for red, blue, orange and green
housespec[i]->random_colour[3] = 0x06;
/* New houses do not (currently) expect to have a default start
* date before 1930, as this breaks the build date stuff. See
* FinaliseHouseArray() for more details. */
if (housespec[i]->min_date < 1930) housespec[i]->min_date = 1930;
}
_have_newhouses = true;
break;
case 0x09: // Building flags
FOR_EACH_OBJECT {
byte state = grf_load_byte(&buf);
housespec[i]->building_flags = (BuildingFlags)state;
}
break;
case 0x0A: // Availability years
FOR_EACH_OBJECT {
uint16 years = grf_load_word(&buf);
housespec[i]->min_date = GB(years, 0, 8) > 150 ? MAX_YEAR : ORIGINAL_BASE_YEAR + GB(years, 0, 8);
housespec[i]->max_date = GB(years, 8, 8) > 150 ? MAX_YEAR : ORIGINAL_BASE_YEAR + GB(years, 8, 8);
}
break;
case 0x0B: // Population
FOR_EACH_OBJECT housespec[i]->population = grf_load_byte(&buf);
break;
case 0x0C: // Mail generation multiplier
FOR_EACH_OBJECT housespec[i]->mail_generation = grf_load_byte(&buf);
break;
case 0x0D: // Passenger acceptance
case 0x0E: // Mail acceptance
FOR_EACH_OBJECT housespec[i]->cargo_acceptance[prop - 0x0D] = grf_load_byte(&buf);
break;
case 0x0F: // Goods/candy, food/fizzy drinks acceptance
FOR_EACH_OBJECT {
int8 goods = grf_load_byte(&buf);
/* If value of goods is negative, it means in fact food or, if in toyland, fizzy_drink acceptance.
* Else, we have "standard" 3rd cargo type, goods or candy, for toyland once more */
housespec[i]->accepts_cargo[2] = (goods >= 0) ? ((_opt.landscape == LT_CANDY) ? CT_CANDY : CT_GOODS) :
((_opt.landscape == LT_CANDY) ? CT_FIZZY_DRINKS : CT_FOOD);
housespec[i]->cargo_acceptance[2] = abs(goods); // but we do need positive value here
}
break;
case 0x10: // Local authority rating decrease on removal
FOR_EACH_OBJECT housespec[i]->remove_rating_decrease = grf_load_word(&buf);
break;
case 0x11: // Removal cost multiplier
FOR_EACH_OBJECT housespec[i]->removal_cost = grf_load_byte(&buf);
break;
case 0x12: // Building name ID
FOR_EACH_OBJECT housespec[i]->building_name = MapGRFStringID(grf_load_word(&buf));
break;
case 0x13: // Building availability mask
FOR_EACH_OBJECT {
uint16 avail = grf_load_word(&buf);
housespec[i]->building_availability = (HouseZones)avail;
}
break;
case 0x14: // House callback flags
FOR_EACH_OBJECT housespec[i]->callback_mask = grf_load_byte(&buf);
break;
case 0x15: // House override byte
FOR_EACH_OBJECT {
byte override = grf_load_byte(&buf);
/* The house being overridden must be an original house. */
if (override >= NEW_HOUSE_OFFSET) {
grfmsg(2, "TownHouseChangeInfo: Attempt to override new house %u with house id %u. Ignoring.", override, hid);
return false;
}
AddHouseOverride(hid, override);
}
break;
case 0x16: // Periodic refresh multiplier
FOR_EACH_OBJECT housespec[i]->processing_time = grf_load_byte(&buf);
break;
case 0x17: // Four random colours to use
FOR_EACH_OBJECT {
uint j;
for (j = 0; j < 4; j++) housespec[i]->random_colour[j] = grf_load_byte(&buf);
}
break;
case 0x18: // Relative probability of appearing
FOR_EACH_OBJECT housespec[i]->probability = grf_load_byte(&buf);
break;
case 0x19: // Extra flags
FOR_EACH_OBJECT {
byte flags = grf_load_byte(&buf);
housespec[i]->extra_flags = (HouseExtraFlags)flags;
}
break;
case 0x1A: // Animation frames
FOR_EACH_OBJECT housespec[i]->animation_frames = grf_load_byte(&buf);
break;
case 0x1B: // Animation speed
FOR_EACH_OBJECT housespec[i]->animation_speed = clamp(grf_load_byte(&buf), 2, 16);
break;
case 0x1C: // Class of the building type
FOR_EACH_OBJECT housespec[i]->class_id = AllocateHouseClassID(grf_load_byte(&buf), _cur_grffile->grfid);
break;
case 0x1D: // Callback flags 2
FOR_EACH_OBJECT housespec[i]->callback_mask |= (grf_load_byte(&buf) << 8);
break;
case 0x1E: // Accepted cargo types
FOR_EACH_OBJECT grf_load_dword(&buf);
ret = true;
break;
default:
ret = true;
break;
}
*bufp = buf;
return ret;
}
static bool GlobalVarChangeInfo(uint gvid, int numinfo, int prop, byte **bufp, int len)
{
byte *buf = *bufp;
int i;
bool ret = false;
switch (prop) {
case 0x08: /* Cost base factor */
FOR_EACH_OBJECT {
byte factor = grf_load_byte(&buf);
uint price = gvid + i;
if (price < NUM_PRICES) {
SetPriceBaseMultiplier(price, factor);
} else {
grfmsg(1, "GlobalVarChangeInfo: Price %d out of range, ignoring", price);
}
}
break;
case 0x09: /* Cargo translation table */
/* This is loaded during the initialisation stage, so just skip it here. */
/* Each entry is 4 bytes. */
buf += numinfo * 4;
break;
case 0x0A: // Currency display names
FOR_EACH_OBJECT {
uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
StringID newone = GetGRFStringID(_cur_grffile->grfid, grf_load_word(&buf));
if ((newone != STR_UNDEFINED) && (curidx < NUM_CURRENCY)) {
_currency_specs[curidx].name = newone;
}
}
break;
case 0x0B: // Currency multipliers
FOR_EACH_OBJECT {
uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
uint32 rate = grf_load_dword(&buf);
if (curidx < NUM_CURRENCY) {
/* TTDPatch uses a multiple of 1000 for its conversion calculations,
* which OTTD does not. For this reason, divide grf value by 1000,
* to be compatible */
_currency_specs[curidx].rate = rate / 1000;
} else {
grfmsg(1, "GlobalVarChangeInfo: Currency multipliers %d out of range, ignoring", curidx);
}
}
break;
case 0x0C: // Currency options
FOR_EACH_OBJECT {
uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
uint16 options = grf_load_word(&buf);
if (curidx < NUM_CURRENCY) {
_currency_specs[curidx].separator = GB(options, 0, 8);
/* By specifying only one bit, we prevent errors,
* since newgrf specs said that only 0 and 1 can be set for symbol_pos */
_currency_specs[curidx].symbol_pos = GB(options, 8, 1);
} else {
grfmsg(1, "GlobalVarChangeInfo: Currency option %d out of range, ignoring", curidx);
}
}
break;
case 0x0D: // Currency prefix symbol
FOR_EACH_OBJECT {
uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
uint32 tempfix = grf_load_dword(&buf);
if (curidx < NUM_CURRENCY) {
memcpy(_currency_specs[curidx].prefix,&tempfix,4);
_currency_specs[curidx].prefix[4] = 0;
} else {
grfmsg(1, "GlobalVarChangeInfo: Currency symbol %d out of range, ignoring", curidx);
}
}
break;
case 0x0E: // Currency suffix symbol
FOR_EACH_OBJECT {
uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
uint32 tempfix = grf_load_dword(&buf);
if (curidx < NUM_CURRENCY) {
memcpy(&_currency_specs[curidx].suffix,&tempfix,4);
_currency_specs[curidx].suffix[4] = 0;
} else {
grfmsg(1, "GlobalVarChangeInfo: Currency symbol %d out of range, ignoring", curidx);
}
}
break;
case 0x0F: // Euro introduction dates
FOR_EACH_OBJECT {
uint curidx = GetNewgrfCurrencyIdConverted(gvid + i);
Year year_euro = grf_load_word(&buf);
if (curidx < NUM_CURRENCY) {
_currency_specs[curidx].to_euro = year_euro;
} else {
grfmsg(1, "GlobalVarChangeInfo: Euro intro date %d out of range, ignoring", curidx);
}
}
break;
case 0x10: // 12 * 32 * B Snow line height table
if (numinfo > 1 || IsSnowLineSet()) {
grfmsg(1, "GlobalVarChangeInfo: The snowline can only be set once (%d)", numinfo);
} else if (len < SNOW_LINE_MONTHS * SNOW_LINE_DAYS) {
grfmsg(1, "GlobalVarChangeInfo: Not enough entries set in the snowline table (%d)", len);
} else {
byte table[SNOW_LINE_MONTHS][SNOW_LINE_DAYS];
for (uint i = 0; i < SNOW_LINE_MONTHS; i++) {
for (uint j = 0; j < SNOW_LINE_DAYS; j++) {
table[i][j] = grf_load_byte(&buf);
}
}
SetSnowLine(table);
}
break;
default:
ret = true;
}
*bufp = buf;
return ret;
}
static bool SoundEffectChangeInfo(uint sid, int numinfo, int prop, byte **bufp, int len)
{
byte *buf = *bufp;
int i;
bool ret = false;
if (_cur_grffile->sound_offset == 0) {
grfmsg(1, "SoundEffectChangeInfo: No effects defined, skipping");
return false;
}
switch (prop) {
case 0x08: /* Relative volume */
FOR_EACH_OBJECT {
uint sound = sid + i + _cur_grffile->sound_offset - GetNumOriginalSounds();
if (sound >= GetNumSounds()) {
grfmsg(1, "SoundEffectChangeInfo: Sound %d not defined (max %d)", sound, GetNumSounds());
} else {
GetSound(sound)->volume = grf_load_byte(&buf);
}
}
break;
case 0x09: /* Priority */
FOR_EACH_OBJECT {
uint sound = sid + i + _cur_grffile->sound_offset - GetNumOriginalSounds();
if (sound >= GetNumSounds()) {
grfmsg(1, "SoundEffectChangeInfo: Sound %d not defined (max %d)", sound, GetNumSounds());
} else {
GetSound(sound)->priority = grf_load_byte(&buf);
}
}
break;
case 0x0A: /* Override old sound */
FOR_EACH_OBJECT {
uint sound = sid + i + _cur_grffile->sound_offset - GetNumOriginalSounds();
uint orig_sound = grf_load_byte(&buf);
if (sound >= GetNumSounds() || orig_sound >= GetNumSounds()) {
grfmsg(1, "SoundEffectChangeInfo: Sound %d or %d not defined (max %d)", sound, orig_sound, GetNumSounds());
} else {
FileEntry *newfe = GetSound(sound);
FileEntry *oldfe = GetSound(orig_sound);
/* Literally copy the data of the new sound over the original */
*oldfe = *newfe;
}
}
break;
default:
ret = true;
}
*bufp = buf;
return ret;
}
/* Action 0x00 */
static void FeatureChangeInfo(byte *buf, int len)
{
byte *bufend = buf + len;
uint i;
/* <00> <feature> <num-props> <num-info> <id> (<property <new-info>)...
*
* B feature 0, 1, 2 or 3 for trains, road vehicles, ships or planes
* 4 for defining new train station sets
* B num-props how many properties to change per vehicle/station
* B num-info how many vehicles/stations to change
* B id ID of first vehicle/station to change, if num-info is
* greater than one, this one and the following
* vehicles/stations will be changed
* B property what property to change, depends on the feature
* V new-info new bytes of info (variable size; depends on properties) */
/* TODO: Bridges, town houses. */
static const VCI_Handler handler[] = {
/* GSF_TRAIN */ RailVehicleChangeInfo,
/* GSF_ROAD */ RoadVehicleChangeInfo,
/* GSF_SHIP */ ShipVehicleChangeInfo,
/* GSF_AIRCRAFT */ AircraftVehicleChangeInfo,
/* GSF_STATION */ StationChangeInfo,
/* GSF_CANAL */ NULL,
/* GSF_BRIDGE */ BridgeChangeInfo,
/* GSF_TOWNHOUSE */ TownHouseChangeInfo,
/* GSF_GLOBALVAR */ GlobalVarChangeInfo,
/* GSF_INDUSTRYTILES */NULL,
/* GSF_INDUSTRIES */ NULL,
/* GSF_CARGOS */ NULL,
/* GSF_SOUNDFX */ SoundEffectChangeInfo,
};
EngineInfo *ei = NULL;
if (len == 1) {
grfmsg(8, "Silently ignoring one-byte special sprite 0x00");
return;
}
if (!check_length(len, 6, "FeatureChangeInfo")) return;
buf++;
uint8 feature = grf_load_byte(&buf);
uint8 numprops = grf_load_byte(&buf);
uint numinfo = grf_load_byte(&buf);
uint engine = grf_load_byte(&buf);
grfmsg(6, "FeatureChangeInfo: feature %d, %d properties, to apply to %d+%d",
feature, numprops, engine, numinfo);
if (feature >= lengthof(handler) || handler[feature] == NULL) {
grfmsg(1, "FeatureChangeInfo: Unsupported feature %d, skipping", feature);
return;
}
if (feature <= GSF_AIRCRAFT) {
if (engine + numinfo > _vehcounts[feature]) {
grfmsg(0, "FeatureChangeInfo: Last engine ID %d out of bounds (max %d), skipping", engine + numinfo, _vehcounts[feature]);
return;
}
ei = &_engine_info[engine + _vehshifts[feature]];
}
while (numprops-- && buf < bufend) {
uint8 prop = grf_load_byte(&buf);
bool ignoring = false;
switch (feature) {
case GSF_TRAIN:
case GSF_ROAD:
case GSF_SHIP:
case GSF_AIRCRAFT:
/* Common properties for vehicles */
switch (prop) {
case 0x00: /* Introduction date */
FOR_EACH_OBJECT ei[i].base_intro = grf_load_word(&buf) + DAYS_TILL_ORIGINAL_BASE_YEAR;
break;
case 0x02: /* Decay speed */
FOR_EACH_OBJECT SB(ei[i].unk2, 0, 7, grf_load_byte(&buf) & 0x7F);
break;
case 0x03: /* Vehicle life */
FOR_EACH_OBJECT ei[i].lifelength = grf_load_byte(&buf);
break;
case 0x04: /* Model life */
FOR_EACH_OBJECT ei[i].base_life = grf_load_byte(&buf);
break;
case 0x06: /* Climates available */
FOR_EACH_OBJECT ei[i].climates = grf_load_byte(&buf);
break;
case 0x07: /* Loading speed */
/* Hyronymus explained me what does
* this mean and insists on having a
* credit ;-). --pasky */
FOR_EACH_OBJECT ei[i].load_amount = grf_load_byte(&buf);
break;
default:
if (handler[feature](engine, numinfo, prop, &buf, bufend - buf)) {
ignoring = true;
}
break;
}
break;
default:
if (handler[feature](engine, numinfo, prop, &buf, bufend - buf)) {
ignoring = true;
}
break;
}
if (ignoring) grfmsg(2, "FeatureChangeInfo: Ignoring property 0x%02X (not implemented)", prop);
}
}
/* Action 0x00 (GLS_SAFETYSCAN) */
static void SafeChangeInfo(byte *buf, int len)
{
if (len == 1) {
grfmsg(8, "Silently ignoring one-byte special sprite 0x00");
return;
}
if (!check_length(len, 6, "SafeChangeInfo")) return;
buf++;
uint8 feature = grf_load_byte(&buf);
uint8 numprops = grf_load_byte(&buf);
grf_load_byte(&buf);
grf_load_byte(&buf);
if (feature == GSF_BRIDGE && numprops == 1) {
uint8 prop = grf_load_byte(&buf);
/* Bridge property 0x0D is redefinition of sprite layout tables, which
* is considered safe. */
if (prop == 0x0D) return;
}
SETBIT(_cur_grfconfig->flags, GCF_UNSAFE);
/* Skip remainder of GRF */
_skip_sprites = -1;
}
/* Action 0x00 (GLS_INIT) */
static void InitChangeInfo(byte *buf, int len)
{
byte *bufend = buf + len;
if (len == 1) {
grfmsg(8, "Silently ignoring one-byte special sprite 0x00");
return;
}
if (!check_length(len, 6, "InitChangeInfo")) return;
buf++;
uint8 feature = grf_load_byte(&buf);
uint8 numprops = grf_load_byte(&buf);
uint8 numinfo = grf_load_byte(&buf);
uint8 index = grf_load_byte(&buf);
while (numprops-- && buf < bufend) {
uint8 prop = grf_load_byte(&buf);
switch (feature) {
case GSF_GLOBALVAR:
switch (prop) {
case 0x09: /* Cargo Translation Table */
if (index != 0) {
grfmsg(1, "InitChangeInfo: Cargo translation table must start at zero");
return;
}
free(_cur_grffile->cargo_list);
_cur_grffile->cargo_max = numinfo;
_cur_grffile->cargo_list = MallocT<CargoLabel>(numinfo);
int i;
FOR_EACH_OBJECT {
CargoLabel cl = grf_load_dword(&buf);
_cur_grffile->cargo_list[i] = BSWAP32(cl);
}
break;
}
break;
}
}
}
#undef FOR_EACH_OBJECT
/**
* Creates a spritegroup representing a callback result
* @param value The value that was used to represent this callback result
* @return A spritegroup representing that callback result
*/
static const SpriteGroup* NewCallBackResultSpriteGroup(uint16 value)
{
SpriteGroup *group = AllocateSpriteGroup();
group->type = SGT_CALLBACK;
// Old style callback results have the highest byte 0xFF so signify it is a callback result
// New style ones only have the highest bit set (allows 15-bit results, instead of just 8)
if ((value >> 8) == 0xFF) {
value &= ~0xFF00;
} else {
value &= ~0x8000;
}
group->g.callback.result = value;
return group;
}
/**
* Creates a spritegroup representing a sprite number result.
* @param value The sprite number.
* @param sprites The number of sprites per set.
* @return A spritegroup representing the sprite number result.
*/
static const SpriteGroup* NewResultSpriteGroup(SpriteID sprite, byte num_sprites)
{
SpriteGroup *group = AllocateSpriteGroup();
group->type = SGT_RESULT;
group->g.result.sprite = sprite;
group->g.result.num_sprites = num_sprites;
return group;
}
/* Action 0x01 */
static void NewSpriteSet(byte *buf, int len)
{
/* <01> <feature> <num-sets> <num-ent>
*
* B feature feature to define sprites for
* 0, 1, 2, 3: veh-type, 4: train stations
* B num-sets number of sprite sets
* E num-ent how many entries per sprite set
* For vehicles, this is the number of different
* vehicle directions in each sprite set
* Set num-dirs=8, unless your sprites are symmetric.
* In that case, use num-dirs=4.
*/
if (!check_length(len, 4, "NewSpriteSet")) return;
buf++;
uint8 feature = grf_load_byte(&buf);
uint8 num_sets = grf_load_byte(&buf);
uint16 num_ents = grf_load_extended(&buf);
_cur_grffile->spriteset_start = _cur_spriteid;
_cur_grffile->spriteset_feature = feature;
_cur_grffile->spriteset_numsets = num_sets;
_cur_grffile->spriteset_numents = num_ents;
grfmsg(7, "New sprite set at %d of type %d, consisting of %d sets with %d views each (total %d)",
_cur_spriteid, feature, num_sets, num_ents, num_sets * num_ents
);
for (uint16 i = 0; i < num_sets * num_ents; i++) {
LoadNextSprite(_cur_spriteid++, _file_index);
_nfo_line++;
}
}
/* Helper function to either create a callback or link to a previously
* defined spritegroup. */
static const SpriteGroup* GetGroupFromGroupID(byte setid, byte type, uint16 groupid)
{
if (HASBIT(groupid, 15)) return NewCallBackResultSpriteGroup(groupid);
if (groupid >= _cur_grffile->spritegroups_count || _cur_grffile->spritegroups[groupid] == NULL) {
grfmsg(1, "NewSpriteGroup(0x%02X:0x%02X): Groupid 0x%04X does not exist, leaving empty", setid, type, groupid);
return NULL;
}
return _cur_grffile->spritegroups[groupid];
}
/* Helper function to either create a callback or a result sprite group. */
static const SpriteGroup* CreateGroupFromGroupID(byte feature, byte setid, byte type, uint16 spriteid, uint16 num_sprites)
{
if (HASBIT(spriteid, 15)) return NewCallBackResultSpriteGroup(spriteid);
if (spriteid >= _cur_grffile->spriteset_numsets) {
grfmsg(1, "NewSpriteGroup(0x%02X:0x%02X): Sprite set %u invalid, max %u", setid, type, spriteid, _cur_grffile->spriteset_numsets);
return NULL;
}
/* Check if the sprite is within range. This can fail if the Action 0x01
* is skipped, as TTDPatch mandates that Action 0x02s must be processed.
* We don't have that rule, but must live by the Patch... */
if (_cur_grffile->spriteset_start + spriteid * num_sprites + num_sprites > _cur_spriteid) {
grfmsg(1, "NewSpriteGroup(0x%02X:0x%02X): Real Sprite IDs 0x%04X - 0x%04X do not (all) exist (max 0x%04X), leaving empty",
setid, type,
_cur_grffile->spriteset_start + spriteid * num_sprites,
_cur_grffile->spriteset_start + spriteid * num_sprites + num_sprites - 1, _cur_spriteid - 1);
return NULL;
}
if (feature != _cur_grffile->spriteset_feature) {
grfmsg(1, "NewSpriteGroup(0x%02X:0x%02X): Sprite set feature 0x%02X does not match action feature 0x%02X, skipping",
_cur_grffile->spriteset_feature, feature);
return NULL;
}
return NewResultSpriteGroup(_cur_grffile->spriteset_start + spriteid * num_sprites, num_sprites);
}
/* Action 0x02 */
static void NewSpriteGroup(byte *buf, int len)
{
/* <02> <feature> <set-id> <type/num-entries> <feature-specific-data...>
*
* B feature see action 1
* B set-id ID of this particular definition
* B type/num-entries
* if 80 or greater, this is a randomized or variational
* list definition, see below
* otherwise it specifies a number of entries, the exact
* meaning depends on the feature
* V feature-specific-data (huge mess, don't even look it up --pasky) */
SpriteGroup *group = NULL;
byte *bufend = buf + len;
if (!check_length(len, 5, "NewSpriteGroup")) return;
buf++;
uint8 feature = grf_load_byte(&buf);
uint8 setid = grf_load_byte(&buf);
uint8 type = grf_load_byte(&buf);
if (setid >= _cur_grffile->spritegroups_count) {
// Allocate memory for new sprite group references.
_cur_grffile->spritegroups = ReallocT(_cur_grffile->spritegroups, setid + 1);
// Initialise new space to NULL
for (; _cur_grffile->spritegroups_count < (setid + 1); _cur_grffile->spritegroups_count++)
_cur_grffile->spritegroups[_cur_grffile->spritegroups_count] = NULL;
}
switch (type) {
/* Deterministic Sprite Group */
case 0x81: // Self scope, byte
case 0x82: // Parent scope, byte
case 0x85: // Self scope, word
case 0x86: // Parent scope, word
case 0x89: // Self scope, dword
case 0x8A: // Parent scope, dword
{
byte varadjust;
byte varsize;
/* Check we can load the var size parameter */
if (!check_length(bufend - buf, 1, "NewSpriteGroup (Deterministic) (1)")) return;
group = AllocateSpriteGroup();
group->type = SGT_DETERMINISTIC;
group->g.determ.var_scope = HASBIT(type, 1) ? VSG_SCOPE_PARENT : VSG_SCOPE_SELF;
switch (GB(type, 2, 2)) {
default: NOT_REACHED();
case 0: group->g.determ.size = DSG_SIZE_BYTE; varsize = 1; break;
case 1: group->g.determ.size = DSG_SIZE_WORD; varsize = 2; break;
case 2: group->g.determ.size = DSG_SIZE_DWORD; varsize = 4; break;
}
if (!check_length(bufend - buf, 5 + varsize, "NewSpriteGroup (Deterministic) (2)")) return;
/* Loop through the var adjusts. Unfortunately we don't know how many we have
* from the outset, so we shall have to keep reallocing. */
do {
DeterministicSpriteGroupAdjust *adjust;
if (group->g.determ.num_adjusts > 0) {
if (!check_length(bufend - buf, 2 + varsize + 3, "NewSpriteGroup (Deterministic) (3)")) return;
}
group->g.determ.num_adjusts++;
group->g.determ.adjusts = ReallocT(group->g.determ.adjusts, group->g.determ.num_adjusts);
adjust = &group->g.determ.adjusts[group->g.determ.num_adjusts - 1];
/* The first var adjust doesn't have an operation specified, so we set it to add. */
adjust->operation = group->g.determ.num_adjusts == 1 ? DSGA_OP_ADD : (DeterministicSpriteGroupAdjustOperation)grf_load_byte(&buf);
adjust->variable = grf_load_byte(&buf);
if (adjust->variable == 0x7E) {
/* Link subroutine group */
adjust->subroutine = GetGroupFromGroupID(setid, type, grf_load_byte(&buf));
} else {
adjust->parameter = IS_BYTE_INSIDE(adjust->variable, 0x60, 0x80) ? grf_load_byte(&buf) : 0;
}
varadjust = grf_load_byte(&buf);
adjust->shift_num = GB(varadjust, 0, 5);
adjust->type = (DeterministicSpriteGroupAdjustType)GB(varadjust, 6, 2);
adjust->and_mask = grf_load_var(varsize, &buf);
if (adjust->type != DSGA_TYPE_NONE) {
adjust->add_val = grf_load_var(varsize, &buf);
adjust->divmod_val = grf_load_var(varsize, &buf);
} else {
adjust->add_val = 0;
adjust->divmod_val = 0;
}
/* Continue reading var adjusts while bit 5 is set. */
} while (HASBIT(varadjust, 5));
group->g.determ.num_ranges = grf_load_byte(&buf);
group->g.determ.ranges = CallocT<DeterministicSpriteGroupRange>(group->g.determ.num_ranges);
if (!check_length(bufend - buf, 2 + (2 + 2 * varsize) * group->g.determ.num_ranges, "NewSpriteGroup (Deterministic)")) return;
for (uint i = 0; i < group->g.determ.num_ranges; i++) {
group->g.determ.ranges[i].group = GetGroupFromGroupID(setid, type, grf_load_word(&buf));
group->g.determ.ranges[i].low = grf_load_var(varsize, &buf);
group->g.determ.ranges[i].high = grf_load_var(varsize, &buf);
}
group->g.determ.default_group = GetGroupFromGroupID(setid, type, grf_load_word(&buf));
break;
}
/* Randomized Sprite Group */
case 0x80: // Self scope
case 0x83: // Parent scope
{
if (!check_length(bufend - buf, 7, "NewSpriteGroup (Randomized) (1)")) return;
group = AllocateSpriteGroup();
group->type = SGT_RANDOMIZED;
group->g.random.var_scope = HASBIT(type, 1) ? VSG_SCOPE_PARENT : VSG_SCOPE_SELF;
uint8 triggers = grf_load_byte(&buf);
group->g.random.triggers = GB(triggers, 0, 7);
group->g.random.cmp_mode = HASBIT(triggers, 7) ? RSG_CMP_ALL : RSG_CMP_ANY;
group->g.random.lowest_randbit = grf_load_byte(&buf);
group->g.random.num_groups = grf_load_byte(&buf);
group->g.random.groups = CallocT<const SpriteGroup*>(group->g.random.num_groups);
if (!check_length(bufend - buf, 2 * group->g.random.num_groups, "NewSpriteGroup (Randomized) (2)")) return;
for (uint i = 0; i < group->g.random.num_groups; i++) {
group->g.random.groups[i] = GetGroupFromGroupID(setid, type, grf_load_word(&buf));
}
break;
}
/* Neither a variable or randomized sprite group... must be a real group */
default:
{
switch (feature) {
case GSF_TRAIN:
case GSF_ROAD:
case GSF_SHIP:
case GSF_AIRCRAFT:
case GSF_STATION:
{
byte sprites = _cur_grffile->spriteset_numents;
byte num_loaded = type;
byte num_loading = grf_load_byte(&buf);
if (_cur_grffile->spriteset_start == 0) {
grfmsg(0, "NewSpriteGroup: No sprite set to work on! Skipping");
return;
}
if (!check_length(bufend - buf, 2 * num_loaded + 2 * num_loading, "NewSpriteGroup (Real) (1)")) return;
group = AllocateSpriteGroup();
group->type = SGT_REAL;
group->g.real.num_loaded = num_loaded;
group->g.real.num_loading = num_loading;
if (num_loaded > 0) group->g.real.loaded = CallocT<const SpriteGroup*>(num_loaded);
if (num_loading > 0) group->g.real.loading = CallocT<const SpriteGroup*>(num_loading);
grfmsg(6, "NewSpriteGroup: New SpriteGroup 0x%02X, %u views, %u loaded, %u loading",
setid, sprites, num_loaded, num_loading);
for (uint i = 0; i < num_loaded; i++) {
uint16 spriteid = grf_load_word(&buf);
group->g.real.loaded[i] = CreateGroupFromGroupID(feature, setid, type, spriteid, sprites);
grfmsg(8, "NewSpriteGroup: + rg->loaded[%i] = subset %u", i, spriteid);
}
for (uint i = 0; i < num_loading; i++) {
uint16 spriteid = grf_load_word(&buf);
group->g.real.loading[i] = CreateGroupFromGroupID(feature, setid, type, spriteid, sprites);
grfmsg(8, "NewSpriteGroup: + rg->loading[%i] = subset %u", i, spriteid);
}
break;
}
case GSF_TOWNHOUSE: {
byte sprites = _cur_grffile->spriteset_numents;
byte num_sprites = max((uint8)1, type);
uint i;
group = AllocateSpriteGroup();
group->type = SGT_TILELAYOUT;
group->g.layout.num_sprites = sprites;
group->g.layout.dts = CallocT<DrawTileSprites>(1);
/* Groundsprite */
group->g.layout.dts->ground_sprite = grf_load_word(&buf);
group->g.layout.dts->ground_pal = grf_load_word(&buf);
/* Remap transparent/colour modifier bits */
if (HASBIT(group->g.layout.dts->ground_sprite, 14)) {
CLRBIT(group->g.layout.dts->ground_sprite, 14);
SETBIT(group->g.layout.dts->ground_sprite, PALETTE_MODIFIER_TRANSPARENT);
}
if (HASBIT(group->g.layout.dts->ground_sprite, 15)) {
CLRBIT(group->g.layout.dts->ground_sprite, 15);
SETBIT(group->g.layout.dts->ground_sprite, PALETTE_MODIFIER_COLOR);
}
if (HASBIT(group->g.layout.dts->ground_pal, 14)) {
CLRBIT(group->g.layout.dts->ground_pal, 14);
SETBIT(group->g.layout.dts->ground_sprite, SPRITE_MODIFIER_OPAQUE);
}
if (HASBIT(group->g.layout.dts->ground_pal, 15)) {
/* Bit 31 set means this is a custom sprite, so rewrite it to the
* last spriteset defined. */
SpriteID sprite = _cur_grffile->spriteset_start + GB(group->g.layout.dts->ground_sprite, 0, 14) * sprites;
SB(group->g.layout.dts->ground_sprite, 0, SPRITE_WIDTH, sprite);
CLRBIT(group->g.layout.dts->ground_pal, 15);
}
group->g.layout.dts->seq = CallocT<DrawTileSeqStruct>(num_sprites + 1);
for (i = 0; i < num_sprites; i++) {
DrawTileSeqStruct *seq = (DrawTileSeqStruct*)&group->g.layout.dts->seq[i];
seq->image = grf_load_word(&buf);
seq->pal = grf_load_word(&buf);
seq->delta_x = grf_load_byte(&buf);
seq->delta_y = grf_load_byte(&buf);
if (HASBIT(seq->image, 14)) {
CLRBIT(seq->image, 14);
SETBIT(seq->image, PALETTE_MODIFIER_TRANSPARENT);
}
if (HASBIT(seq->image, 15)) {
CLRBIT(seq->image, 15);
SETBIT(seq->image, PALETTE_MODIFIER_COLOR);
}
if (HASBIT(seq->pal, 14)) {
CLRBIT(seq->pal, 14);
SETBIT(seq->image, SPRITE_MODIFIER_OPAQUE);
}
if (HASBIT(seq->pal, 15)) {
/* Bit 31 set means this is a custom sprite, so rewrite it to the
* last spriteset defined. */
SpriteID sprite = _cur_grffile->spriteset_start + GB(seq->image, 0, 14) * sprites;
SB(seq->image, 0, SPRITE_WIDTH, sprite);
CLRBIT(seq->pal, 15);
}
if (type > 0) {
seq->delta_z = grf_load_byte(&buf);
if ((byte)seq->delta_z == 0x80) continue;
}
seq->size_x = grf_load_byte(&buf);
seq->size_y = grf_load_byte(&buf);
seq->size_z = grf_load_byte(&buf);
}
/* Set the terminator value. */
((DrawTileSeqStruct*)group->g.layout.dts->seq)[i].delta_x = (byte)0x80;
break;
}
/* Loading of Tile Layout and Production Callback groups would happen here */
default: grfmsg(1, "NewSpriteGroup: Unsupported feature %d, skipping", feature);
}
}
}
_cur_grffile->spritegroups[setid] = group;
}
static CargoID TranslateCargo(uint8 feature, uint8 ctype)
{
/* Special cargo types for purchase list and stations */
if (feature == GSF_STATION && ctype == 0xFE) return CT_DEFAULT_NA;
if (ctype == 0xFF) return CT_PURCHASE;
/* Check if the cargo type is out of bounds of the cargo translation table */
if (ctype >= (_cur_grffile->cargo_max == 0 ? _default_cargo_max : _cur_grffile->cargo_max)) {
grfmsg(1, "FeatureMapSpriteGroup: Cargo type %d out of range (max %d), skipping.", ctype, (_cur_grffile->cargo_max == 0 ? _default_cargo_max : _cur_grffile->cargo_max) - 1);
return CT_INVALID;
}
/* Look up the cargo label from the translation table */
CargoLabel cl = _cur_grffile->cargo_max == 0 ? _default_cargo_list[ctype] : _cur_grffile->cargo_list[ctype];
if (cl == 0) {
grfmsg(5, "FeatureMapSpriteGroup: Cargo type %d not available in this climate, skipping.", ctype);
return CT_INVALID;
}
ctype = GetCargoIDByLabel(cl);
if (ctype == CT_INVALID) {
grfmsg(5, "FeatureMapSpriteGroup: Cargo '%c%c%c%c' unsupported, skipping.", GB(cl, 24, 8), GB(cl, 16, 8), GB(cl, 8, 8), GB(cl, 0, 8));
return CT_INVALID;
}
grfmsg(6, "FeatureMapSpriteGroup: Cargo '%c%c%c%c' mapped to cargo type %d.", GB(cl, 24, 8), GB(cl, 16, 8), GB(cl, 8, 8), GB(cl, 0, 8), ctype);
return ctype;
}
/* Action 0x03 */
static void FeatureMapSpriteGroup(byte *buf, int len)
{
/* <03> <feature> <n-id> <ids>... <num-cid> [<cargo-type> <cid>]... <def-cid>
* id-list := [<id>] [id-list]
* cargo-list := <cargo-type> <cid> [cargo-list]
*
* B feature see action 0
* B n-id bits 0-6: how many IDs this definition applies to
* bit 7: if set, this is a wagon override definition (see below)
* B ids the IDs for which this definition applies
* B num-cid number of cargo IDs (sprite group IDs) in this definition
* can be zero, in that case the def-cid is used always
* B cargo-type type of this cargo type (e.g. mail=2, wood=7, see below)
* W cid cargo ID (sprite group ID) for this type of cargo
* W def-cid default cargo ID (sprite group ID) */
/* TODO: Bridges, town houses. */
/* TODO: Multiple cargo support could be useful even for trains/cars -
* cargo id 0xff is used for showing images in the build train list. */
static byte *last_engines;
static int last_engines_count;
if (!check_length(len, 6, "FeatureMapSpriteGroup")) return;
uint8 feature = buf[1];
uint8 idcount = buf[2] & 0x7F;
bool wagover = (buf[2] & 0x80) == 0x80;
if (!check_length(len, 3 + idcount, "FeatureMapSpriteGroup")) return;
/* If idcount is zero, this is a feature callback */
if (idcount == 0) {
grfmsg(2, "FeatureMapSpriteGroup: Feature callbacks not implemented yet");
return;
}
uint8 cidcount = buf[3 + idcount];
if (!check_length(len, 4 + idcount + cidcount * 3, "FeatureMapSpriteGroup")) return;
grfmsg(6, "FeatureMapSpriteGroup: Feature %d, %d ids, %d cids, wagon override %d",
feature, idcount, cidcount, wagover);
if (feature > GSF_STATION && feature != GSF_TOWNHOUSE) {
grfmsg(1, "FeatureMapSpriteGroup: Unsupported feature %d, skipping", feature);
return;
}
if (feature == GSF_STATION) {
// We do things differently for stations.
for (uint i = 0; i < idcount; i++) {
uint8 stid = buf[3 + i];
StationSpec *statspec = _cur_grffile->stations[stid];
byte *bp = &buf[4 + idcount];
for (uint c = 0; c < cidcount; c++) {
uint8 ctype = grf_load_byte(&bp);
uint16 groupid = grf_load_word(&bp);
if (groupid >= _cur_grffile->spritegroups_count || _cur_grffile->spritegroups[groupid] == NULL) {
grfmsg(1, "FeatureMapSpriteGroup: Spriteset 0x%04X out of range 0x%X or empty, skipping",
groupid, _cur_grffile->spritegroups_count);
return;
}
ctype = TranslateCargo(feature, ctype);
if (ctype == CT_INVALID) continue;
statspec->spritegroup[ctype] = _cur_grffile->spritegroups[groupid];
}
}
{
byte *bp = buf + 4 + idcount + cidcount * 3;
uint16 groupid = grf_load_word(&bp);
if (groupid >= _cur_grffile->spritegroups_count || _cur_grffile->spritegroups[groupid] == NULL) {
grfmsg(1, "FeatureMapSpriteGroup: Spriteset 0x%04X out of range 0x%X or empty, skipping",
groupid, _cur_grffile->spritegroups_count);
return;
}
for (uint i = 0; i < idcount; i++) {
uint8 stid = buf[3 + i];
StationSpec *statspec = _cur_grffile->stations[stid];
statspec->spritegroup[CT_DEFAULT] = _cur_grffile->spritegroups[groupid];
statspec->grfid = _cur_grffile->grfid;
statspec->localidx = stid;
SetCustomStationSpec(statspec);
}
}
return;
} else if (feature == GSF_TOWNHOUSE) {
byte *bp = &buf[4 + idcount + cidcount * 3];
uint16 groupid = grf_load_word(&bp);
if (groupid >= _cur_grffile->spritegroups_count || _cur_grffile->spritegroups[groupid] == NULL) {
grfmsg(1, "FeatureMapSpriteGroup: Spriteset 0x%04X out of range 0x%X or empty, skipping.",
groupid, _cur_grffile->spritegroups_count);
return;
}
for (uint i = 0; i < idcount; i++) {
uint8 hid = buf[3 + i];
HouseSpec *hs = _cur_grffile->housespec[hid];
if (hs == NULL) {
grfmsg(1, "FeatureMapSpriteGroup: Too many houses defined, skipping");
return;
}
hs->spritegroup = _cur_grffile->spritegroups[groupid];
}
return;
}
// FIXME: Tropicset contains things like:
// 03 00 01 19 01 00 00 00 00 - this is missing one 00 at the end,
// what should we exactly do with that? --pasky
if (_cur_grffile->spriteset_start == 0 || _cur_grffile->spritegroups == 0) {
grfmsg(1, "FeatureMapSpriteGroup: No sprite set to work on! Skipping");
return;
}
if (!wagover && last_engines_count != idcount) {
last_engines = ReallocT(last_engines, idcount);
last_engines_count = idcount;
}
if (wagover) {
if (last_engines_count == 0) {
grfmsg(0, "FeatureMapSpriteGroup: WagonOverride: No engine to do override with");
return;
}
grfmsg(6, "FeatureMapSpriteGroup: WagonOverride: %u engines, %u wagons",
last_engines_count, idcount);
}
for (uint i = 0; i < idcount; i++) {
uint8 engine_id = buf[3 + i];
uint8 engine = engine_id + _vehshifts[feature];
byte *bp = &buf[4 + idcount];
if (engine_id > _vehcounts[feature]) {
grfmsg(0, "Id %u for feature 0x%02X is out of bounds", engine_id, feature);
return;
}
grfmsg(7, "FeatureMapSpriteGroup: [%d] Engine %d...", i, engine);
for (uint c = 0; c < cidcount; c++) {
uint8 ctype = grf_load_byte(&bp);
uint16 groupid = grf_load_word(&bp);
grfmsg(8, "FeatureMapSpriteGroup: * [%d] Cargo type 0x%X, group id 0x%02X", c, ctype, groupid);
if (groupid >= _cur_grffile->spritegroups_count || _cur_grffile->spritegroups[groupid] == NULL) {
grfmsg(1, "FeatureMapSpriteGroup: Spriteset 0x%04X out of range 0x%X or empty, skipping", groupid, _cur_grffile->spritegroups_count);
return;
}
ctype = TranslateCargo(feature, ctype);
if (ctype == CT_INVALID) continue;
if (wagover) {
SetWagonOverrideSprites(engine, ctype, _cur_grffile->spritegroups[groupid], last_engines, last_engines_count);
} else {
SetCustomEngineSprites(engine, ctype, _cur_grffile->spritegroups[groupid]);
last_engines[i] = engine;
}
}
}
{
byte *bp = buf + 4 + idcount + cidcount * 3;
uint16 groupid = grf_load_word(&bp);
grfmsg(8, "-- Default group id 0x%04X", groupid);
for (uint i = 0; i < idcount; i++) {
uint8 engine = buf[3 + i] + _vehshifts[feature];
// Don't tell me you don't love duplicated code!
if (groupid >= _cur_grffile->spritegroups_count || _cur_grffile->spritegroups[groupid] == NULL) {
grfmsg(1, "FeatureMapSpriteGroup: Spriteset 0x%04X out of range 0x%X or empty, skipping", groupid, _cur_grffile->spritegroups_count);
return;
}
if (wagover) {
/* If the ID for this action 3 is the same as the vehicle ID,
* this indicates we have a helicopter rotor override. */
if (feature == GSF_AIRCRAFT && engine == last_engines[i]) {
SetRotorOverrideSprites(engine, _cur_grffile->spritegroups[groupid]);
} else {
// TODO: No multiple cargo types per vehicle yet. --pasky
SetWagonOverrideSprites(engine, CT_DEFAULT, _cur_grffile->spritegroups[groupid], last_engines, last_engines_count);
}
} else {
SetCustomEngineSprites(engine, CT_DEFAULT, _cur_grffile->spritegroups[groupid]);
SetEngineGRF(engine, _cur_grffile);
last_engines[i] = engine;
}
}
}
}
/* Action 0x04 */
static void FeatureNewName(byte *buf, int len)
{
/* <04> <veh-type> <language-id> <num-veh> <offset> <data...>
*
* B veh-type see action 0 (as 00..07, + 0A
* But IF veh-type = 48, then generic text
* B language-id If bit 6 is set, This is the extended language scheme,
with up to 64 language.
Otherwise, it is a mapping where set bits have meaning
0 = american, 1 = english, 2 = german, 3 = french, 4 = spanish
Bit 7 set means this is a generic text, not a vehicle one (or else)
* B num-veh number of vehicles which are getting a new name
* B/W offset number of the first vehicle that gets a new name
* Byte : ID of vehicle to change
* Word : ID of string to change/add
* S data new texts, each of them zero-terminated, after
* which the next name begins. */
bool new_scheme = _cur_grffile->grf_version >= 7;
if (!check_length(len, 6, "FeatureNewName")) return;
buf++;
uint8 feature = grf_load_byte(&buf);
uint8 lang = grf_load_byte(&buf);
uint8 num = grf_load_byte(&buf);
bool generic = HASBIT(lang, 7);
uint16 id = generic ? grf_load_word(&buf) : grf_load_byte(&buf);
CLRBIT(lang, 7);
if (feature <= GSF_AIRCRAFT && id < _vehcounts[feature]) {
id += _vehshifts[feature];
}
uint16 endid = id + num;
grfmsg(6, "FeatureNewName: About to rename engines %d..%d (feature %d) in language 0x%02X",
id, endid, feature, lang);
len -= generic ? 6 : 5;
for (; id < endid && len > 0; id++) {
const char *name = grf_load_string(&buf, len);
size_t name_length = strlen(name) + 1;
len -= (int)name_length;
if (name_length == 1) {
grfmsg(7, "FeatureNewName: Can't add empty name");
} else if (name_length > 127) {
grfmsg(7, "FeatureNewName: Too long a name (%d)", name_length);
} else {
grfmsg(8, "FeatureNewName: %d <- %s", id, name);
switch (feature) {
case GSF_TRAIN:
case GSF_ROAD:
case GSF_SHIP:
case GSF_AIRCRAFT: {
if (id < TOTAL_NUM_ENGINES) {
StringID string = AddGRFString(_cur_grffile->grfid, id, lang, new_scheme, name, STR_8000_KIRBY_PAUL_TANK_STEAM + id);
SetCustomEngineName(id, string);
} else {
AddGRFString(_cur_grffile->grfid, id, lang, new_scheme, name, id);
}
break;
}
case GSF_TOWNHOUSE:
default:
switch (GB(id, 8, 8)) {
case 0xC4: /* Station class name */
if (_cur_grffile->stations == NULL || _cur_grffile->stations[GB(id, 0, 8)] == NULL) {
grfmsg(1, "FeatureNewName: Attempt to name undefined station 0x%X, ignoring", GB(id, 0, 8));
} else {
StationClassID sclass = _cur_grffile->stations[GB(id, 0, 8)]->sclass;
SetStationClassName(sclass, AddGRFString(_cur_grffile->grfid, id, lang, new_scheme, name, STR_UNDEFINED));
}
break;
case 0xC5: /* Station name */
if (_cur_grffile->stations == NULL || _cur_grffile->stations[GB(id, 0, 8)] == NULL) {
grfmsg(1, "FeatureNewName: Attempt to name undefined station 0x%X, ignoring", GB(id, 0, 8));
} else {
_cur_grffile->stations[GB(id, 0, 8)]->name = AddGRFString(_cur_grffile->grfid, id, lang, new_scheme, name, STR_UNDEFINED);
}
break;
case 0xC9: { /* House name */
if (_cur_grffile->housespec == NULL || _cur_grffile->housespec[GB(id, 0, 8)] == NULL) {
grfmsg(1, "FeatureNewName: Attempt to name undefined house 0x%X, ignoring.", GB(id, 0, 8));
} else {
_cur_grffile->housespec[GB(id, 0, 8)]->building_name = AddGRFString(_cur_grffile->grfid, id, lang, new_scheme, name, STR_UNDEFINED);
}
break;
}
case 0xD0:
case 0xDC:
AddGRFString(_cur_grffile->grfid, id, lang, new_scheme, name, STR_UNDEFINED);
break;
default:
grfmsg(7, "FeatureNewName: Unsupported ID (0x%04X)", id);
break;
}
break;
#if 0
case GSF_CANAL :
case GSF_BRIDGE :
AddGRFString(_cur_spriteid, id, lang, name);
switch (GB(id, 8,8)) {
case 0xC9: /* House name */
default:
grfmsg(7, "FeatureNewName: Unsupported ID (0x%04X)", id);
}
break;
case GSF_INDUSTRIES :
case 0x48 : /* for generic strings */
AddGRFString(_cur_spriteid, id, lang, name);
break;
default :
grfmsg(7, "FeatureNewName: Unsupported feature (0x%02X)", feature);
break;
#endif
}
}
}
}
/* Action 0x05 */
static void GraphicsNew(byte *buf, int len)
{
/* <05> <graphics-type> <num-sprites> <other data...>
*
* B graphics-type What set of graphics the sprites define.
* E num-sprites How many sprites are in this set?
* V other data Graphics type specific data. Currently unused. */
/* TODO */
SpriteID replace = 0;
if (!check_length(len, 2, "GraphicsNew")) return;
buf++;
uint8 type = grf_load_byte(&buf);
uint16 num = grf_load_extended(&buf);
switch (type) {
case 0x04: /* Signal graphics */
if (num != 112 && num != 240) {
grfmsg(1, "GraphicsNews: Signal graphics sprite count must be 112 or 240, skipping");
return;
}
_signal_base = _cur_spriteid;
break;
case 0x05: /* Catenary graphics */
if (num != 48) {
grfmsg(1, "GraphicsNews: Catenary graphics sprite count must be 48, skipping");
return;
}
replace = SPR_ELRAIL_BASE + 3;
break;
case 0x06: /* Foundations */
if (num != 74) {
grfmsg(1, "GraphicsNews: Foundation graphics sprite count must be 74, skipping");
return;
}
replace = SPR_SLOPES_BASE;
break;
case 0x08: /* Canal graphics */
if (num != 65) {
grfmsg(1, "GraphicsNews: Canal graphics sprite count must be 65, skipping");
return;
}
replace = SPR_CANALS_BASE + 5;
break;
case 0x0D: /* Coast graphics */
if (num != 16) {
grfmsg(1, "GraphicsNews: Coast graphics sprite count must be 16, skipping");
return;
}
_coast_base = _cur_spriteid;
break;
default:
grfmsg(2, "GraphicsNew: Custom graphics (type 0x%02X) sprite block of length %u (unimplemented, ignoring)",
type, num);
return;
}
if (replace == 0) {
grfmsg(2, "GraphicsNew: Loading %u sprites of type 0x%02X at SpriteID 0x%04X", num, type, _cur_spriteid);
} else {
grfmsg(2, "GraphicsNew: Replacing %u sprites of type 0x%02X at SpriteID 0x%04X", num, type, replace);
}
for (; num > 0; num--) {
LoadNextSprite(replace == 0 ? _cur_spriteid++ : replace++, _file_index);
_nfo_line++;
}
}
static uint32 GetParamVal(byte param, uint32 *cond_val)
{
switch (param) {
case 0x81: /* current year */
return clamp(_cur_year, ORIGINAL_BASE_YEAR, ORIGINAL_MAX_YEAR) - ORIGINAL_BASE_YEAR;
case 0x83: /* current climate, 0=temp, 1=arctic, 2=trop, 3=toyland */
return _opt.landscape;
case 0x84: /* GRF loading stage */
return (_cur_stage > GLS_INIT) | ((_cur_stage == GLS_ACTIVATION) << 9);
case 0x85: /* TTDPatch flags, only for bit tests */
if (cond_val == NULL) {
/* Supported in Action 0x07 and 0x09, not 0x0D */
return 0;
} else {
uint32 param_val = _ttdpatch_flags[*cond_val / 0x20];
*cond_val %= 0x20;
return param_val;
}
case 0x86: /* road traffic side, bit 4 clear=left, set=right */
return _opt.road_side << 4;
case 0x88: /* GRF ID check */
return 0;
case 0x8B: { /* TTDPatch version */
uint major = 2;
uint minor = 6;
uint revision = 0; // special case: 2.0.1 is 2.0.10
uint build = 1168;
return (major << 24) | (minor << 20) | (revision << 16) | build;
}
case 0x8D: /* TTD Version, 00=DOS, 01=Windows */
return !_use_dos_palette;
case 0x8E: /* Y-offset for train sprites */
return _traininfo_vehicle_pitch;
case 0x92: /* Game mode */
return _game_mode;
case 0x9A: /* Always -1 */
return UINT_MAX;
case 0x9D: /* TTD Platform, 00=TTDPatch, 01=OpenTTD */
return 1;
case 0x9E: /* Miscellaneous GRF features */
return _misc_grf_features;
default:
/* GRF Parameter */
if (param < 0x80) return _cur_grffile->param[param];
/* In-game variable. */
grfmsg(1, "Unsupported in-game variable 0x%02X", param);
return UINT_MAX;
}
}
/* Action 0x06 */
static void CfgApply(byte *buf, int len)
{
/* <06> <param-num> <param-size> <offset> ... <FF>
*
* B param-num Number of parameter to substitute (First = "zero")
* Ignored if that parameter was not specified in newgrf.cfg
* B param-size How many bytes to replace. If larger than 4, the
* bytes of the following parameter are used. In that
* case, nothing is applied unless *all* parameters
* were specified.
* B offset Offset into data from beginning of next sprite
* to place where parameter is to be stored. */
/* Preload the next sprite */
uint32 pos = FioGetPos();
uint16 num = FioReadWord();
uint8 type = FioReadByte();
/* Check if the sprite is a pseudo sprite. We can't operate on real sprites. */
if (type == 0xFF) {
_preload_sprite = MallocT<byte>(num);
FioReadBlock(_preload_sprite, num);
}
/* Reset the file position to the start of the next sprite */
FioSeekTo(pos, SEEK_SET);
if (type != 0xFF) {
grfmsg(2, "CfgApply: Ignoring (next sprite is real, unsupported)");
return;
}
/* Now perform the Action 0x06 on our data. */
buf++;
for (;;) {
uint i;
uint param_num;
uint param_size;
uint offset;
bool add_value;
/* Read the parameter to apply. 0xFF indicates no more data to change. */
param_num = grf_load_byte(&buf);
if (param_num == 0xFF) break;
/* Get the size of the parameter to use. If the size covers multiple
* double words, sequential parameter values are used. */
param_size = grf_load_byte(&buf);
/* Bit 7 of param_size indicates we should add to the original value
* instead of replacing it. */
add_value = HASBIT(param_size, 7);
param_size = GB(param_size, 0, 7);
/* Where to apply the data to within the pseudo sprite data. */
offset = grf_load_extended(&buf);
/* If the parameter is a GRF parameter (not an internal variable) check
* if it (and all further sequential parameters) has been defined. */
if (param_num < 0x80 && (param_num + (param_size - 1) / 4) >= _cur_grffile->param_end) {
grfmsg(2, "CfgApply: Ignoring (param %d not set)", (param_num + (param_size - 1) / 4));
break;
}
grfmsg(8, "CfgApply: Applying %u bytes from parameter 0x%02X at offset 0x%04X", param_size, param_num, offset);
for (i = 0; i < param_size; i++) {
uint32 value = GetParamVal(param_num + i / 4, NULL);
if (add_value) {
_preload_sprite[offset + i] += GB(value, (i % 4) * 8, 8);
} else {
_preload_sprite[offset + i] = GB(value, (i % 4) * 8, 8);
}
}
}
}
/* Action 0x07 */
/* Action 0x09 */
static void SkipIf(byte *buf, int len)
{
/* <07/09> <param-num> <param-size> <condition-type> <value> <num-sprites>
*
* B param-num
* B param-size
* B condition-type
* V value
* B num-sprites */
/* TODO: More params. More condition types. */
uint32 cond_val = 0;
uint32 mask = 0;
bool result;
if (!check_length(len, 6, "SkipIf")) return;
buf++;
uint8 param = grf_load_byte(&buf);
uint8 paramsize = grf_load_byte(&buf);
uint8 condtype = grf_load_byte(&buf);
if (condtype < 2) {
/* Always 1 for bit tests, the given value should be ignored. */
paramsize = 1;
}
switch (paramsize) {
case 4: cond_val = grf_load_dword(&buf); mask = 0xFFFFFFFF; break;
case 2: cond_val = grf_load_word(&buf); mask = 0x0000FFFF; break;
case 1: cond_val = grf_load_byte(&buf); mask = 0x000000FF; break;
default: break;
}
if (param < 0x80 && _cur_grffile->param_end <= param) {
grfmsg(7, "Param %d undefined, skipping test", param);
return;
}
uint32 param_val = GetParamVal(param, &cond_val);
grfmsg(7, "Test condtype %d, param 0x%08X, condval 0x%08X", condtype, param_val, cond_val);
if (param == 0x88) {
/* GRF ID checks */
const GRFConfig *c = GetGRFConfig(cond_val);
if (condtype != 10 && c == NULL) {
grfmsg(7, "GRFID 0x%08X unknown, skipping test", BSWAP32(cond_val));
return;
}
switch (condtype) {
/* Tests 6 to 10 are only for param 0x88, GRFID checks */
case 6: /* Is GRFID active? */
result = c->status == GCS_ACTIVATED;
break;
case 7: /* Is GRFID non-active? */
result = c->status != GCS_ACTIVATED;
break;
case 8: /* GRFID is not but will be active? */
result = c->status == GCS_INITIALISED;
break;
case 9: /* GRFID is or will be active? */
result = c->status == GCS_ACTIVATED || c->status == GCS_INITIALISED;
break;
case 10: /* GRFID is not nor will be active */
/* This is the only condtype that doesn't get ignored if the GRFID is not found */
result = c == NULL || c->flags == GCS_DISABLED || c->status == GCS_NOT_FOUND;
break;
default: grfmsg(1, "Unsupported GRF test %d. Ignoring", condtype); return;
}
} else {
/* Parameter or variable tests */
switch (condtype) {
case 0: result = !!(param_val & (1 << cond_val));
break;
case 1: result = !(param_val & (1 << cond_val));
break;
case 2: result = (param_val & mask) == cond_val;
break;
case 3: result = (param_val & mask) != cond_val;
break;
case 4: result = (param_val & mask) < cond_val;
break;
case 5: result = (param_val & mask) > cond_val;
break;
default: grfmsg(1, "Unsupported test %d. Ignoring", condtype); return;
}
}
if (!result) {
grfmsg(2, "Not skipping sprites, test was false");
return;
}
uint8 numsprites = grf_load_byte(&buf);
/* numsprites can be a GOTO label if it has been defined in the GRF
* file. The jump will always be the first matching label that follows
* the current nfo_line. If no matching label is found, the first matching
* label in the file is used. */
GRFLabel *choice = NULL;
for (GRFLabel *label = _cur_grffile->label; label != NULL; label = label->next) {
if (label->label != numsprites) continue;
/* Remember a goto before the current line */
if (choice == NULL) choice = label;
/* If we find a label here, this is definitely good */
if (label->nfo_line > _nfo_line) {
choice = label;
break;
}
}
if (choice != NULL) {
grfmsg(2, "Jumping to label 0x%0X at line %d, test was true", choice->label, choice->nfo_line);
FioSeekTo(choice->pos, SEEK_SET);
_nfo_line = choice->nfo_line;
return;
}
grfmsg(2, "Skipping %d sprites, test was true", numsprites);
_skip_sprites = numsprites;
if (_skip_sprites == 0) {
/* Zero means there are no sprites to skip, so
* we use -1 to indicate that all further
* sprites should be skipped. */
_skip_sprites = -1;
/* If an action 8 hasn't been encountered yet, disable the grf. */
if (_cur_grfconfig->status != GCS_ACTIVATED) _cur_grfconfig->status = GCS_DISABLED;
}
}
/* Action 0x08 (GLS_FILESCAN) */
static void ScanInfo(byte *buf, int len)
{
if (!check_length(len, 8, "Info")) return;
buf++;
grf_load_byte(&buf);
uint32 grfid = grf_load_dword(&buf);
_cur_grfconfig->grfid = grfid;
/* GRF IDs starting with 0xFF are reserved for internal TTDPatch use */
if (GB(grfid, 24, 8) == 0xFF) SETBIT(_cur_grfconfig->flags, GCF_SYSTEM);
len -= 6;
const char *name = grf_load_string(&buf, len);
_cur_grfconfig->name = TranslateTTDPatchCodes(name);
len -= strlen(name) + 1;
if (len > 0) {
const char *info = grf_load_string(&buf, len);
_cur_grfconfig->info = TranslateTTDPatchCodes(info);
}
/* GLS_INFOSCAN only looks for the action 8, so we can skip the rest of the file */
_skip_sprites = -1;
}
/* Action 0x08 */
static void GRFInfo(byte *buf, int len)
{
/* <08> <version> <grf-id> <name> <info>
*
* B version newgrf version, currently 06
* 4*B grf-id globally unique ID of this .grf file
* S name name of this .grf set
* S info string describing the set, and e.g. author and copyright */
if (!check_length(len, 8, "GRFInfo")) return;
buf++;
uint8 version = grf_load_byte(&buf);
uint32 grfid = grf_load_dword(&buf);
const char *name = grf_load_string(&buf, len - 6);
_cur_grffile->grfid = grfid;
_cur_grffile->grf_version = version;
_cur_grfconfig->status = _cur_stage < GLS_ACTIVATION ? GCS_INITIALISED : GCS_ACTIVATED;
/* Do swap the GRFID for displaying purposes since people expect that */
DEBUG(grf, 1, "Loaded GRFv%d set %08lX - %s", version, BSWAP32(grfid), name);
}
/* Action 0x0A */
static void SpriteReplace(byte *buf, int len)
{
/* <0A> <num-sets> <set1> [<set2> ...]
* <set>: <num-sprites> <first-sprite>
*
* B num-sets How many sets of sprites to replace.
* Each set:
* B num-sprites How many sprites are in this set
* W first-sprite First sprite number to replace */
buf++; /* skip action byte */
uint8 num_sets = grf_load_byte(&buf);
for (uint i = 0; i < num_sets; i++) {
uint8 num_sprites = grf_load_byte(&buf);
uint16 first_sprite = grf_load_word(&buf);
grfmsg(2, "SpriteReplace: [Set %d] Changing %d sprites, beginning with %d",
i, num_sprites, first_sprite
);
for (uint j = 0; j < num_sprites; j++) {
LoadNextSprite(first_sprite + j, _file_index); // XXX
_nfo_line++;
}
}
}
/* Action 0x0B */
static void GRFLoadError(byte *buf, int len)
{
/* <0B> <severity> <language-id> <message-id> [<message...> 00] [<data...>] 00 [<parnum>]
*
* B severity 00: notice, contine loading grf file
* 01: warning, continue loading grf file
* 02: error, but continue loading grf file, and attempt
* loading grf again when loading or starting next game
* 03: error, abort loading and prevent loading again in
* the future (only when restarting the patch)
* B language-id see action 4, use 1F for built-in error messages
* B message-id message to show, see below
* S message for custom messages (message-id FF), text of the message
* not present for built-in messages.
* V data additional data for built-in (or custom) messages
* B parnum parameter numbers to be shown in the message (maximum of 2) */
static const StringID msgstr[] = {
STR_NEWGRF_ERROR_VERSION_NUMBER,
STR_NEWGRF_ERROR_DOS_OR_WINDOWS,
STR_NEWGRF_ERROR_UNSET_SWITCH,
STR_NEWGRF_ERROR_INVALID_PARAMETER,
STR_NEWGRF_ERROR_LOAD_BEFORE,
STR_NEWGRF_ERROR_LOAD_AFTER
};
static const StringID sevstr[] = {
STR_NEWGRF_ERROR_MSG_INFO,
STR_NEWGRF_ERROR_MSG_WARNING,
STR_NEWGRF_ERROR_MSG_ERROR,
STR_NEWGRF_ERROR_MSG_FATAL
};
/* AddGRFString expects the string to be referred to by an id in the newgrf
* file. Errors messages are never referred to however, so invent ids that
* are unlikely to be reached in a newgrf file so they don't overwrite
* anything else. */
enum {
MESSAGE_STRING_ID = MAX_UVALUE(StringID) - 1,
MESSAGE_DATA_ID = MAX_UVALUE(StringID)
};
if (!check_length(len, 6, "GRFLoadError")) return;
/* For now we can only show one message per newgrf file. */
if (_cur_grfconfig->error != NULL) return;
buf++; /* Skip the action byte. */
byte severity = grf_load_byte(&buf);
byte lang = grf_load_byte(&buf);
byte message_id = grf_load_byte(&buf);
len -= 4;
/* Skip the error until the activation stage unless bit 7 of the severity
* is set. */
if (!HASBIT(severity, 7) && _cur_stage < GLS_ACTIVATION) {
grfmsg(7, "Skipping non-fatal GRFLoadError in stage 1");
return;
}
CLRBIT(severity, 7);
if (severity >= lengthof(sevstr)) {
grfmsg(7, "GRFLoadError: Invalid severity id %d. Setting to 2 (non-fatal error).", severity);
severity = 2;
} else if (severity == 3) {
/* This is a fatal error, so make sure the GRF is deactivated and no
* more of it gets loaded. */
_cur_grfconfig->status = GCS_DISABLED;
_skip_sprites = -1;
}
if (message_id >= lengthof(msgstr) && message_id != 0xFF) {
grfmsg(7, "GRFLoadError: Invalid message id.");
return;
}
if (len <= 1) {
grfmsg(7, "GRFLoadError: No message data supplied.");
return;
}
bool new_scheme = _cur_grffile->grf_version >= 7;
GRFError *error = CallocT<GRFError>(1);
error->severity = sevstr[severity];
if (message_id == 0xFF) {
/* This is a custom error message. */
const char *message = grf_load_string(&buf, len);
len -= (strlen(message) + 1);
error->message = AddGRFString(_cur_grffile->grfid, MESSAGE_STRING_ID, lang, new_scheme, message, STR_UNDEFINED);
} else {
error->message = msgstr[message_id];
}
if (len > 0) {
const char *data = grf_load_string(&buf, len);
len -= (strlen(data) + 1);
error->data = AddGRFString(_cur_grffile->grfid, MESSAGE_DATA_ID, lang, new_scheme, data, STR_UNDEFINED);
}
/* Only two parameter numbers can be used in the string. */
uint i = 0;
for (; i < 2 && len > 0; i++) {
error->param_number[i] = grf_load_byte(&buf);
len--;
}
error->num_params = i;
_cur_grfconfig->error = error;
}
/* Action 0x0C */
static void GRFComment(byte *buf, int len)
{
/* <0C> [<ignored...>]
*
* V ignored Anything following the 0C is ignored */
if (len == 1) return;
int text_len = len - 1;
const char *text = (const char*)(buf + 1);
grfmsg(2, "GRFComment: %.*s", text_len, text);
}
/* Action 0x0D (GLS_SAFETYSCAN) */
static void SafeParamSet(byte *buf, int len)
{
if (!check_length(len, 5, "SafeParamSet")) return;
buf++;
uint8 target = grf_load_byte(&buf);
/* Only writing GRF parameters is considered safe */
if (target < 0x80) return;
/* GRM could be unsafe, but as here it can only happen after other GRFs
* are loaded, it should be okay. If the GRF tried to use the slots it
* reserved, it would be marked unsafe anyway. GRM for (e.g. bridge)
* sprites is considered safe. */
SETBIT(_cur_grfconfig->flags, GCF_UNSAFE);
/* Skip remainder of GRF */
_skip_sprites = -1;
}
/* Action 0x0D */
static void ParamSet(byte *buf, int len)
{
/* <0D> <target> <operation> <source1> <source2> [<data>]
*
* B target parameter number where result is stored
* B operation operation to perform, see below
* B source1 first source operand
* B source2 second source operand
* D data data to use in the calculation, not necessary
* if both source1 and source2 refer to actual parameters
*
* Operations
* 00 Set parameter equal to source1
* 01 Addition, source1 + source2
* 02 Subtraction, source1 - source2
* 03 Unsigned multiplication, source1 * source2 (both unsigned)
* 04 Signed multiplication, source1 * source2 (both signed)
* 05 Unsigned bit shift, source1 by source2 (source2 taken to be a
* signed quantity; left shift if positive and right shift if
* negative, source1 is unsigned)
* 06 Signed bit shift, source1 by source2
* (source2 like in 05, and source1 as well)
*/
if (!check_length(len, 5, "ParamSet")) return;
buf++;
uint8 target = grf_load_byte(&buf);
uint8 oper = grf_load_byte(&buf);
uint32 src1 = grf_load_byte(&buf);
uint32 src2 = grf_load_byte(&buf);
uint32 data = 0;
if (len >= 8) data = grf_load_dword(&buf);
/* You can add 80 to the operation to make it apply only if the target
* is not defined yet. In this respect, a parameter is taken to be
* defined if any of the following applies:
* - it has been set to any value in the newgrf(w).cfg parameter list
* - it OR A PARAMETER WITH HIGHER NUMBER has been set to any value by
* an earlier action D */
if (HASBIT(oper, 7)) {
if (target < 0x80 && target < _cur_grffile->param_end) {
grfmsg(7, "Param %u already defined, skipping", target);
return;
}
oper = GB(oper, 0, 7);
}
if (src2 == 0xFE) {
if (GB(data, 0, 8) == 0xFF) {
if (data == 0x0000FFFF) {
/* Patch variables */
grfmsg(2, "ParamSet: Reading Patch variables unsupported");
return;
} else {
/* GRF Resource Management */
if (_cur_stage != GLS_ACTIVATION) {
/* Ignore GRM during initialization */
src1 = 0;
} else {
uint8 op = src1;
uint8 feature = GB(data, 8, 8);
uint16 count = GB(data, 16, 16);
switch (feature) {
case 0x00: /* Trains */
case 0x01: /* Road Vehicles */
case 0x02: /* Ships */
case 0x03: /* Aircraft */
{
uint start = 0;
uint size = 0;
uint shift = _vehshifts[feature];
if (op == 6) {
/* Return GRFID of set that reserved ID */
src1 = _grm_engines[shift + _cur_grffile->param[target]];
break;
}
/* With an operation of 2 or 3, we want to reserve a specific block of IDs */
if (op == 2 || op == 3) start = _cur_grffile->param[target];
for (uint i = start; i < _vehcounts[feature]; i++) {
if (_grm_engines[shift + i] == 0) {
size++;
} else {
if (op == 2 || op == 3) break;
start = i + 1;
size = 0;
}
if (size == count) break;
}
if (size == count) {
/* Got the slot... */
if (op == 0 || op == 3) {
grfmsg(2, "GRM: Reserving %d vehicles at %d", count, start);
for (uint i = 0; i < count; i++) _grm_engines[shift + start + i] = _cur_grffile->grfid;
}
src1 = start;
} else {
/* Unable to allocate */
if (op != 4 && op != 5) {
/* Deactivate GRF */
grfmsg(0, "GRM: Unable to allocate %d vehicles, deactivating", count);
_cur_grfconfig->status = GCS_DISABLED;
_skip_sprites = -1;
return;
}
grfmsg(1, "GRM: Unable to allocate %d vehicles", count);
src1 = UINT_MAX;
}
break;
}
case 0x08: /* General sprites */
switch (op) {
case 0:
/* Check if the allocated sprites will fit below the original sprite limit */
if (_cur_spriteid + count >= 16384) {
grfmsg(0, "GRM: Unable to allocate %d sprites; try changing NewGRF order", count);
_cur_grfconfig->status = GCS_DISABLED;
_skip_sprites = -1;
return;
}
/* 'Reserve' space at the current sprite ID */
src1 = _cur_spriteid;
_cur_spriteid += count;
break;
case 1:
src1 = _cur_spriteid;
break;
default:
grfmsg(1, "GRM: Unsupported operation %d for general sprites", op);
return;
}
break;
default: grfmsg(1, "GRM: Unsupported feature 0x%X", feature); return;
}
}
}
} else {
/* Read another GRF File's parameter */
const GRFFile *file = GetFileByGRFID(data);
if (file == NULL || src1 >= file->param_end) {
src1 = 0;
} else {
src1 = file->param[src1];
}
}
} else {
/* The source1 and source2 operands refer to the grf parameter number
* like in action 6 and 7. In addition, they can refer to the special
* variables available in action 7, or they can be FF to use the value
* of <data>. If referring to parameters that are undefined, a value
* of 0 is used instead. */
src1 = (src1 == 0xFF) ? data : GetParamVal(src1, NULL);
src2 = (src2 == 0xFF) ? data : GetParamVal(src2, NULL);
}
/* TODO: You can access the parameters of another GRF file by using
* source2=FE, source1=the other GRF's parameter number and data=GRF
* ID. This is only valid with operation 00 (set). If the GRF ID
* cannot be found, a value of 0 is used for the parameter value
* instead. */
uint32 res;
switch (oper) {
case 0x00:
res = src1;
break;
case 0x01:
res = src1 + src2;
break;
case 0x02:
res = src1 - src2;
break;
case 0x03:
res = src1 * src2;
break;
case 0x04:
res = (int32)src1 * (int32)src2;
break;
case 0x05:
if ((int32)src2 < 0) {
res = src1 >> -(int32)src2;
} else {
res = src1 << src2;
}
break;
case 0x06:
if ((int32)src2 < 0) {
res = (int32)src1 >> -(int32)src2;
} else {
res = (int32)src1 << src2;
}
break;
case 0x07: /* Bitwise AND */
res = src1 & src2;
break;
case 0x08: /* Bitwise OR */
res = src1 | src2;
break;
case 0x09: /* Unsigned division */
if (src2 == 0) {
res = src1;
} else {
res = src1 / src2;
}
break;
case 0x0A: /* Signed divison */
if (src2 == 0) {
res = src1;
} else {
res = (int32)src1 / (int32)src2;
}
break;
case 0x0B: /* Unsigned modulo */
if (src2 == 0) {
res = src1;
} else {
res = src1 % src2;
}
break;
case 0x0C: /* Signed modulo */
if (src2 == 0) {
res = src1;
} else {
res = (int32)src1 % (int32)src2;
}
break;
default: grfmsg(0, "ParamSet: Unknown operation %d, skipping", oper); return;
}
switch (target) {
case 0x8E: // Y-Offset for train sprites
_traininfo_vehicle_pitch = res;
break;
// TODO implement
case 0x8F: // Rail track type cost factors
case 0x93: // Tile refresh offset to left
case 0x94: // Tile refresh offset to right
case 0x95: // Tile refresh offset upwards
case 0x96: // Tile refresh offset downwards
case 0x97: // Snow line height
case 0x99: // Global ID offset
grfmsg(7, "ParamSet: Skipping unimplemented target 0x%02X", target);
break;
case 0x9E: /* Miscellaneous GRF features */
_misc_grf_features = res;
/* Set train list engine width */
_traininfo_vehicle_width = HASBIT(res, 3) ? 32 : 29;
break;
default:
if (target < 0x80) {
_cur_grffile->param[target] = res;
if (target + 1U > _cur_grffile->param_end) _cur_grffile->param_end = target + 1;
} else {
grfmsg(7, "ParamSet: Skipping unknown target 0x%02X", target);
}
break;
}
}
/* Action 0x0E (GLS_SAFETYSCAN) */
static void SafeGRFInhibit(byte *buf, int len)
{
/* <0E> <num> <grfids...>
*
* B num Number of GRFIDs that follow
* D grfids GRFIDs of the files to deactivate */
if (!check_length(len, 2, "GRFInhibit")) return;
buf++;
uint8 num = grf_load_byte(&buf);
if (!check_length(len, 2 + 4 * num, "GRFInhibit")) return;
for (uint i = 0; i < num; i++) {
uint32 grfid = grf_load_dword(&buf);
/* GRF is unsafe it if tries to deactivate other GRFs */
if (grfid != _cur_grfconfig->grfid) {
SETBIT(_cur_grfconfig->flags, GCF_UNSAFE);
/* Skip remainder of GRF */
_skip_sprites = -1;
return;
}
}
}
/* Action 0x0E */
static void GRFInhibit(byte *buf, int len)
{
/* <0E> <num> <grfids...>
*
* B num Number of GRFIDs that follow
* D grfids GRFIDs of the files to deactivate */
if (!check_length(len, 2, "GRFInhibit")) return;
buf++;
uint8 num = grf_load_byte(&buf);
if (!check_length(len, 2 + 4 * num, "GRFInhibit")) return;
for (uint i = 0; i < num; i++) {
uint32 grfid = grf_load_dword(&buf);
GRFConfig *file = GetGRFConfig(grfid);
/* Unset activation flag */
if (file != NULL && file != _cur_grfconfig) {
grfmsg(2, "GRFInhibit: Deactivating file '%s'", file->filename);
file->status = GCS_DISABLED;
}
}
}
/* Action 0x10 */
static void DefineGotoLabel(byte *buf, int len)
{
/* <10> <label> [<comment>]
*
* B label The label to define
* V comment Optional comment - ignored */
if (!check_length(len, 1, "DefineGotoLabel")) return;
buf++; len--;
GRFLabel *label = MallocT<GRFLabel>(1);
label->label = grf_load_byte(&buf);
label->nfo_line = _nfo_line;
label->pos = FioGetPos();
label->next = NULL;
/* Set up a linked list of goto targets which we will search in an Action 0x7/0x9 */
if (_cur_grffile->label == NULL) {
_cur_grffile->label = label;
} else {
/* Attach the label to the end of the list */
GRFLabel *l;
for (l = _cur_grffile->label; l->next != NULL; l = l->next);
l->next = label;
}
grfmsg(2, "DefineGotoLabel: GOTO target with label 0x%02X", label->label);
}
/* Action 0x11 */
static void GRFSound(byte *buf, int len)
{
/* <11> <num>
*
* W num Number of sound files that follow */
if (!check_length(len, 1, "GRFSound")) return;
buf++;
uint16 num = grf_load_word(&buf);
_grf_data_blocks = num;
_grf_data_type = GDT_SOUND;
if (_cur_grffile->sound_offset == 0) _cur_grffile->sound_offset = GetNumSounds();
}
static void ImportGRFSound(byte *buf, int len)
{
const GRFFile *file;
FileEntry *se = AllocateFileEntry();
uint32 grfid = grf_load_dword(&buf);
uint16 sound = grf_load_word(&buf);
file = GetFileByGRFID(grfid);
if (file == NULL || file->sound_offset == 0) {
grfmsg(1, "ImportGRFSound: Source file not available");
return;
}
if (file->sound_offset + sound >= GetNumSounds()) {
grfmsg(1, "ImportGRFSound: Sound effect %d is invalid", sound);
return;
}
grfmsg(2, "ImportGRFSound: Copying sound %d (%d) from file %X", sound, file->sound_offset + sound, grfid);
*se = *GetSound(file->sound_offset + sound);
/* Reset volume and priority, which TTDPatch doesn't copy */
se->volume = 128;
se->priority = 0;
}
/* 'Action 0xFE' */
static void GRFImportBlock(byte *buf, int len)
{
if (_grf_data_blocks == 0) {
grfmsg(2, "GRFImportBlock: Unexpected import block, skipping");
return;
}
buf++;
_grf_data_blocks--;
/* XXX 'Action 0xFE' isn't really specified. It is only mentioned for
* importing sounds, so this is probably all wrong... */
if (grf_load_byte(&buf) != _grf_data_type) {
grfmsg(1, "GRFImportBlock: Import type mismatch");
}
switch (_grf_data_type) {
case GDT_SOUND: ImportGRFSound(buf, len - 1); break;
default: NOT_REACHED(); break;
}
}
static void LoadGRFSound(byte *buf, int len)
{
byte *buf_start = buf;
/* Allocate a sound entry. This is done even if the data is not loaded
* so that the indices used elsewhere are still correct. */
FileEntry *se = AllocateFileEntry();
if (grf_load_dword(&buf) != BSWAP32('RIFF')) {
grfmsg(1, "LoadGRFSound: Missing RIFF header");
return;
}
/* Size of file -- we ignore this */
grf_load_dword(&buf);
if (grf_load_dword(&buf) != BSWAP32('WAVE')) {
grfmsg(1, "LoadGRFSound: Invalid RIFF type");
return;
}
for (;;) {
uint32 tag = grf_load_dword(&buf);
uint32 size = grf_load_dword(&buf);
switch (tag) {
case ' tmf': /* 'fmt ' */
/* Audio format, must be 1 (PCM) */
if (grf_load_word(&buf) != 1) {
grfmsg(1, "LoadGRFSound: Invalid audio format");
return;
}
se->channels = grf_load_word(&buf);
se->rate = grf_load_dword(&buf);
grf_load_dword(&buf);
grf_load_word(&buf);
se->bits_per_sample = grf_load_word(&buf);
/* Consume any extra bytes */
for (; size > 16; size--) grf_load_byte(&buf);
break;
case 'atad': /* 'data' */
se->file_size = size;
se->file_offset = FioGetPos() - (len - (buf - buf_start)) + 1;
se->file_offset |= _file_index << 24;
/* Set default volume and priority */
se->volume = 0x80;
se->priority = 0;
grfmsg(2, "LoadGRFSound: channels %u, sample rate %u, bits per sample %u, length %u", se->channels, se->rate, se->bits_per_sample, size);
return;
default:
se->file_size = 0;
return;
}
}
}
/* Action 0x12 */
static void LoadFontGlyph(byte *buf, int len)
{
/* <12> <num_def> <font_size> <num_char> <base_char>
*
* B num_def Number of definitions
* B font_size Size of font (0 = normal, 1 = small, 2 = large)
* B num_char Number of consecutive glyphs
* W base_char First character index */
buf++; len--;
if (!check_length(len, 1, "LoadFontGlyph")) return;
uint8 num_def = grf_load_byte(&buf);
if (!check_length(len, 1 + num_def * 4, "LoadFontGlyph")) return;
for (uint i = 0; i < num_def; i++) {
FontSize size = (FontSize)grf_load_byte(&buf);
uint8 num_char = grf_load_byte(&buf);
uint16 base_char = grf_load_word(&buf);
grfmsg(7, "LoadFontGlyph: Loading %u glyph(s) at 0x%04X for size %u", num_char, base_char, size);
for (uint c = 0; c < num_char; c++) {
SetUnicodeGlyph(size, base_char + c, _cur_spriteid);
LoadNextSprite(_cur_spriteid++, _file_index);
_nfo_line++;
}
}
}
/* Action 0x13 */
static void TranslateGRFStrings(byte *buf, int len)
{
/* <13> <grfid> <num-ent> <offset> <text...>
*
* 4*B grfid The GRFID of the file whose texts are to be translated
* B num-ent Number of strings
* W offset First text ID
* S text... Zero-terminated strings */
buf++; len--;
if (!check_length(len, 7, "TranslateGRFString")) return;
uint32 grfid = grf_load_dword(&buf);
const GRFConfig *c = GetGRFConfig(grfid);
if (c == NULL || (c->status != GCS_INITIALISED && c->status != GCS_ACTIVATED)) {
grfmsg(7, "GRFID 0x%08x unknown, skipping action 13", BSWAP32(grfid));
return;
}
if (c->status == GCS_INITIALISED) {
/* If the file is not active but will be activated later, give an error
* and disable this file. */
GRFError *error = CallocT<GRFError>(1);
error->message = STR_NEWGRF_ERROR_LOAD_AFTER;
error->data = STR_NEWGRF_ERROR_AFTER_TRANSLATED_FILE;
error->severity = STR_NEWGRF_ERROR_MSG_FATAL;
if (_cur_grfconfig->error != NULL) free(_cur_grfconfig->error);
_cur_grfconfig->error = error;
_cur_grfconfig->status = GCS_DISABLED;
_skip_sprites = -1;
return;
}
byte num_strings = grf_load_byte(&buf);
uint16 first_id = grf_load_word(&buf);
if (!((first_id >= 0xD000 && first_id + num_strings <= 0xD3FF) || (first_id >= 0xDC00 && first_id + num_strings <= 0xDCFF))) {
grfmsg(7, "Attempting to set out-of-range string IDs in action 13 (first: 0x%4X, number: 0x%2X)", first_id, num_strings);
return;
}
len -= 7;
for (uint i = 0; i < num_strings && len > 0; i++) {
const char *string = grf_load_string(&buf, len);
size_t string_length = strlen(string) + 1;
len -= (int)string_length;
if (string_length == 1) {
grfmsg(7, "TranslateGRFString: Ignoring empty string.");
continue;
}
/* Since no language id is supplied this string has to be added as a
* generic string, thus the language id of 0x7F. For this to work
* new_scheme has to be true as well. A language id of 0x7F will be
* overridden by a non-generic id, so this will not change anything if
* a string has been provided specifically for this language. */
AddGRFString(grfid, first_id + i, 0x7F, true, string, STR_UNDEFINED);
}
}
/* 'Action 0xFF' */
static void GRFDataBlock(byte *buf, int len)
{
if (_grf_data_blocks == 0) {
grfmsg(2, "GRFDataBlock: unexpected data block, skipping");
return;
}
buf++;
uint8 name_len = grf_load_byte(&buf);
const char *name = (const char *)buf;
buf += name_len + 1;
grfmsg(2, "GRFDataBlock: block name '%s'...", name);
_grf_data_blocks--;
switch (_grf_data_type) {
case GDT_SOUND: LoadGRFSound(buf, len - name_len - 2); break;
default: NOT_REACHED(); break;
}
}
/* Used during safety scan on unsafe actions */
static void GRFUnsafe(byte *buf, int len)
{
SETBIT(_cur_grfconfig->flags, GCF_UNSAFE);
/* Skip remainder of GRF */
_skip_sprites = -1;
}
static void InitializeGRFSpecial()
{
_ttdpatch_flags[0] = ((_patches.always_small_airport ? 1 : 0) << 0x0C) // keepsmallairport
| (1 << 0x0D) // newairports
| (1 << 0x0E) // largestations
| ((_patches.longbridges ? 1 : 0) << 0x0F) // longbridges
| (0 << 0x10) // loadtime
| (1 << 0x12) // presignals
| (1 << 0x13) // extpresignals
| ((_patches.never_expire_vehicles ? 1 : 0) << 0x16) // enginespersist
| (1 << 0x1B) // multihead
| (1 << 0x1D) // lowmemory
| (1 << 0x1E); // generalfixes
_ttdpatch_flags[1] = (0 << 0x07) // moreairports - based on units of noise
| ((_patches.mammoth_trains ? 1 : 0) << 0x08) // mammothtrains
| (1 << 0x09) // trainrefit
| (0 << 0x0B) // subsidiaries
| ((_patches.gradual_loading ? 1 : 0) << 0x0C) // gradualloading
| (1 << 0x12) // unifiedmaglevmode - set bit 0 mode. Not revelant to OTTD
| (1 << 0x13) // unifiedmaglevmode - set bit 1 mode
| (1 << 0x14) // bridgespeedlimits
| (1 << 0x16) // eternalgame
| (1 << 0x17) // newtrains
| (1 << 0x18) // newrvs
| (1 << 0x19) // newships
| (1 << 0x1A) // newplanes
| ((_patches.signal_side ? 1 : 0) << 0x1B) // signalsontrafficside
| (1 << 0x1C); // electrifiedrailway
_ttdpatch_flags[2] = (1 << 0x01) // loadallgraphics - obsolote
| (1 << 0x03) // semaphores
| (0 << 0x0B) // enhancedgui
| (0 << 0x0C) // newagerating
| ((_patches.build_on_slopes ? 1 : 0) << 0x0D) // buildonslopes
| (0 << 0x0F) // planespeed
| (0 << 0x10) // moreindustriesperclimate - obsolete
| (0 << 0x11) // moretoylandfeatures
| (1 << 0x12) // newstations
| (0 << 0x13) // tracktypecostdiff
| (0 << 0x14) // manualconvert
| ((_patches.build_on_slopes ? 1 : 0) << 0x15) // buildoncoasts
| (1 << 0x16) // canals
| (1 << 0x17) // newstartyear
| (0 << 0x18) // freighttrains
| (1 << 0x19) // newhouses
| (1 << 0x1A) // newbridges
| (0 << 0x1B) // newtownnames
| (0 << 0x1C) // moreanimations
| ((_patches.wagon_speed_limits ? 1 : 0) << 0x1D) // wagonspeedlimits
| (1 << 0x1E) // newshistory
| (0 << 0x1F); // custombridgeheads
_ttdpatch_flags[3] = (0 << 0x00) // newcargodistribution
| (1 << 0x01) // windowsnap
| (0 << 0x02) // townbuildnoroad
| (0 << 0x03) // pathbasedsignalling. To enable if ever pbs is back
| (0 << 0x04) // aichoosechance
| (1 << 0x05) // resolutionwidth
| (1 << 0x06) // resolutionheight
| (0 << 0x07) // newindustries
| (0 << 0x08) // fifoloading
| (0 << 0x09) // townroadbranchprob
| (0 << 0x0A) // tempsnowline
| (0 << 0x0B) // newcargo
| (1 << 0x0C) // enhancemultiplayer
| (1 << 0x0D) // onewayroads
| ((_patches.nonuniform_stations ? 1 : 0) << 0x0E) // irregularstations
| (1 << 0x0F) // statistics
| (1 << 0x10) // newsounds
| (1 << 0x11) // autoreplace
| (1 << 0x12) // autoslope
| (0 << 0x13) // followvehicle
| (0 << 0x14) // trams
| (0 << 0x15) // enhancetunnels
| (0 << 0x16) // shortrvs
| (0 << 0x17); // articulatedrvs
}
static void ResetCustomStations()
{
for (GRFFile *file = _first_grffile; file != NULL; file = file->next) {
if (file->stations == NULL) continue;
for (uint i = 0; i < MAX_STATIONS; i++) {
if (file->stations[i] == NULL) continue;
StationSpec *statspec = file->stations[i];
/* Release renderdata, if it wasn't copied from another custom station spec */
if (!statspec->copied_renderdata) {
for (uint t = 0; t < statspec->tiles; t++) {
free((void*)statspec->renderdata[t].seq);
}
free(statspec->renderdata);
}
/* Release platforms and layouts */
if (!statspec->copied_layouts) {
for (uint l = 0; l < statspec->lengths; l++) {
for (uint p = 0; p < statspec->platforms[l]; p++) {
free(statspec->layouts[l][p]);
}
free(statspec->layouts[l]);
}
free(statspec->layouts);
free(statspec->platforms);
}
/* Release this station */
free(statspec);
}
/* Free and reset the station data */
free(file->stations);
file->stations = NULL;
}
}
static void ResetCustomHouses()
{
GRFFile *file;
uint i;
for (file = _first_grffile; file != NULL; file = file->next) {
if (file->housespec == NULL) continue;
for (i = 0; i < HOUSE_MAX; i++) free(file->housespec[i]);
free(file->housespec);
file->housespec = NULL;
}
}
static void ResetNewGRF()
{
GRFFile *next;
for (GRFFile *f = _first_grffile; f != NULL; f = next) {
next = f->next;
free(f->filename);
free(f);
}
_first_grffile = NULL;
_cur_grffile = NULL;
}
/**
* Reset all NewGRF loaded data
* TODO
*/
static void ResetNewGRFData()
{
CleanUpStrings();
// Copy/reset original engine info data
memcpy(&_engine_info, &orig_engine_info, sizeof(orig_engine_info));
memcpy(&_rail_vehicle_info, &orig_rail_vehicle_info, sizeof(orig_rail_vehicle_info));
memcpy(&_ship_vehicle_info, &orig_ship_vehicle_info, sizeof(orig_ship_vehicle_info));
memcpy(&_aircraft_vehicle_info, &orig_aircraft_vehicle_info, sizeof(orig_aircraft_vehicle_info));
memcpy(&_road_vehicle_info, &orig_road_vehicle_info, sizeof(orig_road_vehicle_info));
// Copy/reset original bridge info data
// First, free sprite table data
for (uint i = 0; i < MAX_BRIDGES; i++) {
if (_bridge[i].sprite_table != NULL) {
for (uint j = 0; j < 7; j++) free(_bridge[i].sprite_table[j]);
free(_bridge[i].sprite_table);
}
}
memcpy(&_bridge, &orig_bridge, sizeof(_bridge));
// Reset refit/cargo class data
memset(&cargo_allowed, 0, sizeof(cargo_allowed));
memset(&cargo_disallowed, 0, sizeof(cargo_disallowed));
// Reset GRM reservations
memset(&_grm_engines, 0, sizeof(_grm_engines));
// Unload sprite group data
UnloadWagonOverrides();
UnloadRotorOverrideSprites();
UnloadCustomEngineSprites();
UnloadCustomEngineNames();
ResetEngineListOrder();
// Reset price base data
ResetPriceBaseMultipliers();
/* Reset the curencies array */
ResetCurrencies();
/* Reset the house array */
ResetCustomHouses();
ResetHouses();
// Reset station classes
ResetStationClasses();
ResetCustomStations();
/* Reset the snowline table. */
ClearSnowLine();
/* Reset NewGRF files */
ResetNewGRF();
// Add engine type to engine data. This is needed for the refit precalculation.
AddTypeToEngines();
/* Set up the default cargo types */
SetupCargoForClimate(_opt.landscape);
/* Generate default cargo translation table */
memset(_default_cargo_list, 0, sizeof(_default_cargo_list));
for (CargoID c = 0; c != NUM_CARGO; c++) {
const CargoSpec *cs = GetCargo(c);
if (cs->IsValid()) _default_cargo_list[cs->bitnum] = cs->label;
}
/* Reset misc GRF features and train list display variables */
_misc_grf_features = 0;
_traininfo_vehicle_pitch = 0;
_traininfo_vehicle_width = 29;
_have_2cc = false;
_have_newhouses = false;
_signal_base = 0;
_coast_base = 0;
InitializeSoundPool();
InitializeSpriteGroupPool();
}
/** Reset all NewGRFData that was used only while processing data */
static void ClearTemporaryNewGRFData()
{
/* Clear the GOTO labels used for GRF processing */
for (GRFLabel *l = _cur_grffile->label; l != NULL;) {
GRFLabel *l2 = l->next;
free(l);
l = l2;
}
_cur_grffile->label = NULL;
/* Clear the list of spritegroups */
free(_cur_grffile->spritegroups);
_cur_grffile->spritegroups = NULL;
_cur_grffile->spritegroups_count = 0;
}
static void BuildCargoTranslationMap()
{
memset(_cur_grffile->cargo_map, 0xFF, sizeof(_cur_grffile->cargo_map));
for (CargoID c = 0; c < NUM_CARGO; c++) {
const CargoSpec *cs = GetCargo(c);
if (!cs->IsValid()) continue;
if (_cur_grffile->cargo_max == 0) {
/* Default translation table, so just a straight mapping to bitnum */
_cur_grffile->cargo_map[c] = cs->bitnum;
} else {
/* Check the translation table for this cargo's label */
for (uint i = 0; i < _cur_grffile->cargo_max; i++) {
if (cs->label == _cur_grffile->cargo_list[i]) {
_cur_grffile->cargo_map[c] = i;
break;
}
}
}
}
}
static void InitNewGRFFile(const GRFConfig *config, int sprite_offset)
{
GRFFile *newfile = GetFileByFilename(config->filename);
if (newfile != NULL) {
/* We already loaded it once. */
newfile->sprite_offset = sprite_offset;
_cur_grffile = newfile;
return;
}
newfile = CallocT<GRFFile>(1);
if (newfile == NULL) error ("Out of memory");
newfile->filename = strdup(config->filename);
newfile->sprite_offset = sprite_offset;
/* Copy the initial parameter list */
assert(lengthof(newfile->param) == lengthof(config->param) && lengthof(config->param) == 0x80);
newfile->param_end = config->num_params;
memcpy(newfile->param, config->param, sizeof(newfile->param));
if (_first_grffile == NULL) {
_cur_grffile = newfile;
_first_grffile = newfile;
} else {
_cur_grffile->next = newfile;
_cur_grffile = newfile;
}
}
/** List of what cargo labels are refittable for the given the vehicle-type.
* Only currently active labels are applied. */
static const CargoLabel _default_refitmasks_rail[] = {
'PASS', 'COAL', 'MAIL', 'LVST', 'GOOD', 'GRAI', 'WHEA', 'MAIZ', 'WOOD',
'IORE', 'STEL', 'VALU', 'GOLD', 'DIAM', 'PAPR', 'FOOD', 'FRUT', 'CORE',
'WATR', 'SUGR', 'TOYS', 'BATT', 'SWET', 'TOFF', 'COLA', 'CTCD', 'BUBL',
'PLST', 'FZDR',
0 };
static const CargoLabel _default_refitmasks_road[] = {
0 };
static const CargoLabel _default_refitmasks_ships[] = {
'COAL', 'MAIL', 'LVST', 'GOOD', 'GRAI', 'WHEA', 'MAIZ', 'WOOD', 'IORE',
'STEL', 'VALU', 'GOLD', 'DIAM', 'PAPR', 'FOOD', 'FRUT', 'CORE', 'WATR',
'RUBR', 'SUGR', 'TOYS', 'BATT', 'SWET', 'TOFF', 'COLA', 'CTCD', 'BUBL',
'PLST', 'FZDR',
0 };
static const CargoLabel _default_refitmasks_aircraft[] = {
'PASS', 'MAIL', 'GOOD', 'VALU', 'GOLD', 'DIAM', 'FOOD', 'FRUT', 'SUGR',
'TOYS', 'BATT', 'SWET', 'TOFF', 'COLA', 'CTCD', 'BUBL', 'PLST', 'FZDR',
0 };
static const CargoLabel *_default_refitmasks[] = {
_default_refitmasks_rail,
_default_refitmasks_road,
_default_refitmasks_ships,
_default_refitmasks_aircraft,
};
/**
* Precalculate refit masks from cargo classes for all vehicles.
*/
static void CalculateRefitMasks()
{
for (EngineID engine = 0; engine < TOTAL_NUM_ENGINES; engine++) {
/* Skip engine if not available in this climate */
if (!HASBIT(_engine_info[engine].climates, _opt.landscape)) continue;
uint32 mask = 0;
uint32 not_mask = 0;
uint32 xor_mask = 0;
if (_engine_info[engine].refit_mask != 0) {
const GRFFile *file = GetEngineGRF(engine);
if (file != NULL && file->cargo_max != 0) {
/* Apply cargo translation table to the refit mask */
uint num_cargo = min(32, file->cargo_max);
for (uint i = 0; i < num_cargo; i++) {
if (!HASBIT(_engine_info[engine].refit_mask, i)) continue;
CargoID c = GetCargoIDByLabel(file->cargo_list[i]);
if (c == CT_INVALID) continue;
SETBIT(xor_mask, c);
}
} else {
/* No cargo table, so use the cargo bitnum values */
for (CargoID c = 0; c < NUM_CARGO; c++) {
const CargoSpec *cs = GetCargo(c);
if (!cs->IsValid()) continue;
if (HASBIT(_engine_info[engine].refit_mask, cs->bitnum)) SETBIT(xor_mask, c);
}
}
}
if (cargo_allowed[engine] != 0) {
// Build up the list of cargo types from the set cargo classes.
for (CargoID i = 0; i < NUM_CARGO; i++) {
const CargoSpec *cs = GetCargo(i);
if (cargo_allowed[engine] & cs->classes) SETBIT(mask, i);
if (cargo_disallowed[engine] & cs->classes) SETBIT(not_mask, i);
}
} else {
// Don't apply default refit mask to wagons or engines with no capacity
if (xor_mask == 0 && (
GetEngine(engine)->type != VEH_TRAIN || (
RailVehInfo(engine)->capacity != 0 &&
RailVehInfo(engine)->railveh_type != RAILVEH_WAGON
)
)) {
const CargoLabel *cl = _default_refitmasks[GetEngine(engine)->type];
for (uint i = 0;; i++) {
if (cl[i] == 0) break;
CargoID cargo = GetCargoIDByLabel(cl[i]);
if (cargo == CT_INVALID) continue;
SETBIT(xor_mask, cargo);
}
}
}
_engine_info[engine].refit_mask = ((mask & ~not_mask) ^ xor_mask) & _cargo_mask;
if (_engine_info[engine].refit_mask == 0) continue;
/* Check if this engine's cargo type is valid. If not, set to the first refittable
* cargo type. Apparently cargo_type isn't a common property... */
switch (GetEngine(engine)->type) {
case VEH_TRAIN: {
RailVehicleInfo *rvi = &_rail_vehicle_info[engine];
if (rvi->cargo_type == CT_INVALID) rvi->cargo_type = FindFirstRefittableCargo(engine);
if (rvi->cargo_type == CT_INVALID) _engine_info[engine].climates = 0;
break;
}
case VEH_ROAD: {
RoadVehicleInfo *rvi = &_road_vehicle_info[engine - ROAD_ENGINES_INDEX];
if (rvi->cargo_type == CT_INVALID) rvi->cargo_type = FindFirstRefittableCargo(engine);
if (rvi->cargo_type == CT_INVALID) _engine_info[engine].climates = 0;
break;
}
case VEH_SHIP: {
ShipVehicleInfo *svi = &_ship_vehicle_info[engine - SHIP_ENGINES_INDEX];
if (svi->cargo_type == CT_INVALID) svi->cargo_type = FindFirstRefittableCargo(engine);
if (svi->cargo_type == CT_INVALID) _engine_info[engine].climates = 0;
break;
}
}
}
}
/** Add all new houses to the house array. House properties can be set at any
* time in the GRF file, so we can only add a house spec to the house array
* after the file has finished loading. We also need to check the dates, due to
* the TTDPatch behaviour described below that we need to emulate. */
static void FinaliseHouseArray()
{
/* If there are no houses with start dates before 1930, then all houses
* with start dates of 1930 have them reset to 0. This is in order to be
* compatible with TTDPatch, where if no houses have start dates before
* 1930 and the date is before 1930, the game pretends that this is 1930.
* If there have been any houses defined with start dates before 1930 then
* the dates are left alone. */
bool reset_dates = true;
for (GRFFile *file = _first_grffile; file != NULL; file = file->next) {
if (file->housespec == NULL) continue;
for (int i = 0; i < HOUSE_MAX; i++) {
HouseSpec *hs = file->housespec[i];
if (hs != NULL) {
SetHouseSpec(hs);
if (hs->min_date < 1930) reset_dates = false;
}
}
}
if (reset_dates) {
for (int i = NEW_HOUSE_OFFSET; i < HOUSE_MAX; i++) {
HouseSpec *hs = GetHouseSpecs(i);
if (hs->enabled && hs->min_date == 1930) hs->min_date = 0;
}
}
}
/* Here we perform initial decoding of some special sprites (as are they
* described at http://www.ttdpatch.net/src/newgrf.txt, but this is only a very
* partial implementation yet). */
/* XXX: We consider GRF files trusted. It would be trivial to exploit OTTD by
* a crafted invalid GRF file. We should tell that to the user somehow, or
* better make this more robust in the future. */
static void DecodeSpecialSprite(uint num, GrfLoadingStage stage)
{
/* XXX: There is a difference between staged loading in TTDPatch and
* here. In TTDPatch, for some reason actions 1 and 2 are carried out
* during stage 1, whilst action 3 is carried out during stage 2 (to
* "resolve" cargo IDs... wtf). This is a little problem, because cargo
* IDs are valid only within a given set (action 1) block, and may be
* overwritten after action 3 associates them. But overwriting happens
* in an earlier stage than associating, so... We just process actions
* 1 and 2 in stage 2 now, let's hope that won't get us into problems.
* --pasky */
/* We need a pre-stage to set up GOTO labels of Action 0x10 because the grf
* is not in memory and scanning the file every time would be too expensive.
* In other stages we skip action 0x10 since it's already dealt with. */
static const SpecialSpriteHandler handlers[][GLS_END] = {
/* 0x00 */ { NULL, SafeChangeInfo, NULL, InitChangeInfo, FeatureChangeInfo, },
/* 0x01 */ { NULL, GRFUnsafe, NULL, NULL, NewSpriteSet, },
/* 0x02 */ { NULL, GRFUnsafe, NULL, NULL, NewSpriteGroup, },
/* 0x03 */ { NULL, GRFUnsafe, NULL, NULL, FeatureMapSpriteGroup, },
/* 0x04 */ { NULL, NULL, NULL, NULL, FeatureNewName, },
/* 0x05 */ { NULL, NULL, NULL, NULL, GraphicsNew, },
/* 0x06 */ { NULL, NULL, NULL, CfgApply, CfgApply, },
/* 0x07 */ { NULL, NULL, NULL, NULL, SkipIf, },
/* 0x08 */ { ScanInfo, NULL, NULL, GRFInfo, GRFInfo, },
/* 0x09 */ { NULL, NULL, NULL, SkipIf, SkipIf, },
/* 0x0A */ { NULL, NULL, NULL, NULL, SpriteReplace, },
/* 0x0B */ { NULL, NULL, NULL, GRFLoadError, GRFLoadError, },
/* 0x0C */ { NULL, NULL, NULL, GRFComment, GRFComment, },
/* 0x0D */ { NULL, SafeParamSet, NULL, ParamSet, ParamSet, },
/* 0x0E */ { NULL, SafeGRFInhibit, NULL, GRFInhibit, GRFInhibit, },
/* 0x0F */ { NULL, NULL, NULL, NULL, NULL, },
/* 0x10 */ { NULL, NULL, DefineGotoLabel, NULL, NULL, },
/* 0x11 */ { NULL, GRFUnsafe, NULL, NULL, GRFSound, },
/* 0x12 */ { NULL, NULL, NULL, NULL, LoadFontGlyph, },
/* 0x13 */ { NULL, NULL, NULL, NULL, TranslateGRFStrings, },
};
byte* buf;
if (_preload_sprite == NULL) {
/* No preloaded sprite to work with; allocate and read the
* pseudo sprite content. */
buf = MallocT<byte>(num);
if (buf == NULL) error("DecodeSpecialSprite: Could not allocate memory");
FioReadBlock(buf, num);
} else {
/* Use the preloaded sprite data. */
buf = _preload_sprite;
_preload_sprite = NULL;
grfmsg(7, "DecodeSpecialSprite: Using preloaded pseudo sprite data");
/* Skip the real (original) content of this action. */
FioSeekTo(num, SEEK_CUR);
}
byte action = buf[0];
if (action == 0xFF) {
grfmsg(7, "Handling data block in stage %d", stage);
GRFDataBlock(buf, num);
} else if (action == 0xFE) {
grfmsg(7, "Handling import block in stage %d", stage);
GRFImportBlock(buf, num);
} else if (action >= lengthof(handlers)) {
grfmsg(7, "Skipping unknown action 0x%02X", action);
} else if (handlers[action][stage] == NULL) {
grfmsg(7, "Skipping action 0x%02X in stage %d", action, stage);
} else {
grfmsg(7, "Handling action 0x%02X in stage %d", action, stage);
handlers[action][stage](buf, num);
}
free(buf);
}
void LoadNewGRFFile(GRFConfig *config, uint file_index, GrfLoadingStage stage)
{
const char *filename = config->filename;
uint16 num;
/* A .grf file is activated only if it was active when the game was
* started. If a game is loaded, only its active .grfs will be
* reactivated, unless "loadallgraphics on" is used. A .grf file is
* considered active if its action 8 has been processed, i.e. its
* action 8 hasn't been skipped using an action 7.
*
* During activation, only actions 0, 1, 2, 3, 4, 5, 7, 8, 9, 0A and 0B are
* carried out. All others are ignored, because they only need to be
* processed once at initialization. */
if (stage != GLS_FILESCAN && stage != GLS_SAFETYSCAN && stage != GLS_LABELSCAN) {
_cur_grffile = GetFileByFilename(filename);
if (_cur_grffile == NULL) error("File '%s' lost in cache.\n", filename);
if (stage == GLS_ACTIVATION && config->status != GCS_INITIALISED) return;
}
FioOpenFile(file_index, filename);
_file_index = file_index; // XXX
_cur_grfconfig = config;
DEBUG(grf, 2, "Reading NewGRF-file '%s'", filename);
/* Skip the first sprite; we don't care about how many sprites this
* does contain; newest TTDPatches and George's longvehicles don't
* neither, apparently. */
if (FioReadWord() == 4 && FioReadByte() == 0xFF) {
FioReadDword();
} else {
DEBUG(grf, 7, "Custom .grf has invalid format");
return;
}
_skip_sprites = 0; // XXX
_nfo_line = 0;
while ((num = FioReadWord()) != 0) {
byte type = FioReadByte();
_nfo_line++;
if (type == 0xFF) {
if (_skip_sprites == 0) {
DecodeSpecialSprite(num, stage);
/* Stop all processing if we are to skip the remaining sprites */
if (_skip_sprites == -1) break;
continue;
} else {
FioSkipBytes(num);
}
} else {
if (_skip_sprites == 0) grfmsg(7, "Skipping unexpected sprite");
FioSkipBytes(7);
num -= 8;
if (type & 2) {
FioSkipBytes(num);
} else {
while (num > 0) {
int8 i = FioReadByte();
if (i >= 0) {
num -= i;
FioSkipBytes(i);
} else {
i = -(i >> 3);
num -= i;
FioReadByte();
}
}
}
}
if (_skip_sprites > 0) _skip_sprites--;
}
}
void InitDepotWindowBlockSizes();
static void AfterLoadGRFs()
{
/* Pre-calculate all refit masks after loading GRF files. */
CalculateRefitMasks();
/* Set the block size in the depot windows based on vehicle sprite sizes */
InitDepotWindowBlockSizes();
/* Add all new houses to the house array. */
FinaliseHouseArray();
}
void LoadNewGRF(uint load_index, uint file_index)
{
InitializeGRFSpecial();
ResetNewGRFData();
/* Load newgrf sprites
* in each loading stage, (try to) open each file specified in the config
* and load information from it. */
for (GrfLoadingStage stage = GLS_LABELSCAN; stage <= GLS_ACTIVATION; stage++) {
uint slot = file_index;
_cur_stage = stage;
_cur_spriteid = load_index;
for (GRFConfig *c = _grfconfig; c != NULL; c = c->next) {
if (c->status == GCS_DISABLED || c->status == GCS_NOT_FOUND) continue;
// TODO usererror()
if (!FioCheckFileExists(c->filename)) error("NewGRF file is missing '%s'", c->filename);
if (stage == GLS_LABELSCAN) InitNewGRFFile(c, _cur_spriteid);
LoadNewGRFFile(c, slot++, stage);
if (stage == GLS_ACTIVATION) {
ClearTemporaryNewGRFData();
BuildCargoTranslationMap();
DEBUG(sprite, 2, "Currently %i sprites are loaded", _cur_spriteid);
}
}
}
/* Call any functions that should be run after GRFs have been loaded. */
AfterLoadGRFs();
}
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