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OpenTTD-patches/newgrf.c
belugas f76d4f43af (svn r6131) -Codechange : Complete all missing _ttdpatch_flags entries 
-Feature : both unifiedmaglevmode are now set.
Maglev and monorail are not allowed to run on each other tracks and will not be.
Setting those flags will allow grfsets as the Norvegian one to be loaded
-Codechange : link the TTDPatch's irregularstations with OTTD's nonuniform_stations
-Codechange : Reformat the whole array (thanks Rubidium, it sure looks better now)
2006-08-25 19:18:16 +00:00

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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 "economy.h"
#include "newgrf_engine.h"
#include "vehicle.h"
#include "newgrf_text.h"
#include "table/sprites.h"
#include "date.h"
#include "currency.h"
#include "newgrf_spritegroup.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 = 0;
static GRFFile *_cur_grffile;
GRFFile *_first_grffile;
GRFConfig *_first_grfconfig;
static SpriteID _cur_spriteid;
static int _cur_stage;
static uint32 _nfo_line;
/* 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;
typedef 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,
} grfspec_feature;
typedef void (*SpecialSpriteHandler)(byte *buf, int len);
static const int _vehcounts[4] = {
/* GSF_TRAIN */ NUM_TRAIN_ENGINES,
/* GSF_ROAD */ NUM_ROAD_ENGINES,
/* GSF_SHIP */ NUM_SHIP_ENGINES,
/* GSF_AIRCRAFT */ NUM_AIRCRAFT_ENGINES
};
static const int _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];
/* Debugging messages policy:
*
* These should be the severities used for direct DEBUG() calls
* (there is room for exceptions, but you have to have a good cause):
*
* 0..2 - dedicated to grfmsg()
* 3
* 4
* 5
* 6 - action handler entry reporting - one per action
* 7 - basic action progress reporting - in loops, only single one allowed
* 8 - more detailed progress reporting - less important stuff, in deep loops etc
* 9 - extremely detailed progress reporting - detailed reports inside of deep loops and so
*/
typedef enum grfmsg_severity {
GMS_NOTICE,
GMS_WARN,
GMS_ERROR,
GMS_FATAL,
} grfmsg_severity;
static void CDECL grfmsg(grfmsg_severity severity, const char *str, ...)
{
static const char* const severitystr[] = {
"Notice",
"Warning",
"Error",
"Fatal"
};
int export_severity = 0;
char buf[1024];
va_list va;
va_start(va, str);
vsnprintf(buf, sizeof(buf), str, va);
va_end(va);
export_severity = 2 - (severity == GMS_FATAL ? 2 : severity);
DEBUG(grf, export_severity) ("[%s:%d][%s] %s", _cur_grffile->filename, _nfo_line, severitystr[severity], buf);
}
#define check_length(real, wanted, where) \
do { \
if (real < wanted) { \
grfmsg(GMS_ERROR, "%s: Invalid special sprite length %d (expected %d)!", \
where, real, wanted); \
return; \
} \
} while (0)
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 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;
}
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;
rvi->flags &= ~2;
} else {
ei->unk2 |= 0x80;
rvi->flags |= 2;
}
}
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: ei[i].railtype = RAILTYPE_RAIL; break;
case 1: ei[i].railtype = RAILTYPE_MONO; break;
case 2: ei[i].railtype = RAILTYPE_MAGLEV; break;
default:
grfmsg(GMS_WARN, "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].flags & RVI_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].flags & RVI_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;
}
}
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].flags & RVI_MULTIHEAD)) {
// adjust power and running cost if needed
rvi[i].power /= 2;
rvi[i].running_cost_base /= 2;
}
rvi[i].flags |= RVI_MULTIHEAD;
} else {
if (rvi[i].flags & RVI_MULTIHEAD) {
// adjust power and running cost if needed
rvi[i].power *= 2;
rvi[i].running_cost_base *= 2;
}
rvi[i].flags &= ~RVI_MULTIHEAD;
}
}
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) {
rvi[i].cargo_type = ctype;
} else {
grfmsg(GMS_NOTICE, "RailVehicleChangeInfo: Invalid cargo type %d, ignoring.", 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;
ei[i].railtype = RAILTYPE_ELECTRIC;
} else if (traction <= 0x41) {
engclass = 2;
} else {
break;
}
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(GMS_NOTICE, "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 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(GMS_NOTICE, "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);
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;
/* TODO */
/* Fall-through for unimplemented one byte long properties. */
case 0x1F: /* Tractive effort */
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) {
rvi[i].cargo_type = cargo;
} else {
grfmsg(GMS_NOTICE, "RoadVehicleChangeInfo: Invalid cargo type %d, ignoring.", 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 = 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);
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 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);
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);
// XXX: Need to consult this with patchman yet.
#if 0
// Documentation claims this is already the
// per-landscape cargo type id, but newships.grf
// assume otherwise.
cargo = local_cargo_id_ctype[cargo];
#endif
if (cargo < NUM_CARGO) {
svi[i].cargo_type = cargo;
} else {
grfmsg(GMS_NOTICE, "ShipVehicleChangeInfo: Invalid cargo type %d, ignoring.", 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 = 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);
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 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 SB(avi[i].subtype, 0, 1, (grf_load_byte(&buf) != 0 ? 1 : 0));
break;
case 0x0A: /* Large */
FOR_EACH_OBJECT SB(avi[i].subtype, 1, 1, (grf_load_byte(&buf) != 0 ? 1 : 0));
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) */
FOR_EACH_OBJECT avi[i].max_speed = grf_load_byte(&buf);
break;
case 0x0D: /* Acceleration */
FOR_EACH_OBJECT avi[i].acceleration = grf_load_byte(&buf);
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 = 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);
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 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(GMS_WARN, "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 = calloc(MAX_STATIONS, sizeof(*_cur_grffile->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(GMS_NOTICE, "StationChangeInfo: Attempt to modify undefined station %u, ignoring.", stid + i);
return false;
}
}
}
switch (prop) {
case 0x08: /* Class ID */
FOR_EACH_OBJECT {
uint32 classid;
/* Property 0x08 is special; it is where the station is allocated */
if (statspec[i] == NULL) statspec[i] = calloc(1, sizeof(*statspec[i]));
/* Swap classid because we read it in BE meaning WAYP or DFLT */
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];
uint t;
statspec->tiles = grf_load_extended(&buf);
statspec->renderdata = calloc(statspec->tiles, sizeof(*statspec->renderdata));
statspec->copied_renderdata = false;
for (t = 0; t < statspec->tiles; t++) {
DrawTileSprites *dts = &statspec->renderdata[t];
uint seq_count = 0;
dts->seq = NULL;
dts->ground_sprite = grf_load_dword(&buf);
if (dts->ground_sprite == 0) continue;
while (buf < *bufp + len) {
DrawTileSeqStruct *dtss;
// no relative bounding box support
dts->seq = realloc((void*)dts->seq, ++seq_count * sizeof(DrawTileSeqStruct));
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_dword(&buf);
/* Remap flags as ours collide */
if (HASBIT(dtss->image, 31)) {
CLRBIT(dtss->image, 31);
SETBIT(dtss->image, 30);
}
if (HASBIT(dtss->image, 14)) {
CLRBIT(dtss->image, 14);
SETBIT(dtss->image, 31);
}
}
}
}
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];
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 = realloc(statspec->platforms, length);
memset(statspec->platforms + statspec->lengths, 0, length - statspec->lengths);
statspec->layouts = realloc(statspec->layouts, length * sizeof(*statspec->layouts));
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] = realloc(statspec->layouts[l],
number * sizeof(**statspec->layouts));
// 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 = malloc(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 */
/* TODO */
FOR_EACH_OBJECT {
grf_load_byte(&buf);
}
ret = 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;
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 = calloc(7, sizeof(*bridge->sprite_table));
}
for (; numtables-- != 0; tableid++) {
byte sprite;
if (tableid >= 7) { // skip invalid data
grfmsg(GMS_WARN, "BridgeChangeInfo: Table %d >= 7, skipping.", tableid);
for (sprite = 0; sprite < 32; sprite++) grf_load_dword(&buf);
continue;
}
if (bridge->sprite_table[tableid] == NULL) {
bridge->sprite_table[tableid] = malloc(32 * sizeof(**bridge->sprite_table));
}
for (sprite = 0; sprite < 32; sprite++)
bridge->sprite_table[tableid][sprite] = grf_load_dword(&buf);
}
}
break;
case 0x0E: /* Flags; bit 0 - disable far pillars */
FOR_EACH_OBJECT _bridge[brid + i].flags = grf_load_byte(&buf);
break;
default:
ret = true;
}
*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(GMS_WARN, "GlobalVarChangeInfo: Price %d out of range, ignoring.", price);
}
}
break;
case 0x0A: // Currency display names
FOR_EACH_OBJECT {
StringID newone = GetGRFStringID(_cur_grffile->grfid,grf_load_word(&buf));
if (newone != STR_UNDEFINED) {
_currency_specs[gvid + i].name = newone;
}
}
break;
case 0x0B: // Currency multipliers
FOR_EACH_OBJECT {
uint curidx = gvid + i;
uint32 rate = grf_load_dword(&buf);
if (curidx < NUM_CURRENCY) {
_currency_specs[curidx].rate = rate;
} else {
grfmsg(GMS_WARN, "GlobalVarChangeInfo: Currency multipliers %d out of range, ignoring.", curidx);
}
}
break;
case 0x0C: // Currency options
FOR_EACH_OBJECT {
uint curidx = gvid +i;
uint16 options = grf_load_word(&buf);
if (curidx < NUM_CURRENCY) {
_currency_specs[curidx].separator = GB(options, 0, 8);
_currency_specs[curidx].symbol_pos = GB(options, 8, 8);
} else {
grfmsg(GMS_WARN, "GlobalVarChangeInfo: Currency option %d out of range, ignoring.", curidx);
}
}
break;
case 0x0D: // Currency symbols
FOR_EACH_OBJECT {
uint curidx = 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(GMS_WARN, "GlobalVarChangeInfo: Currency symbol %d out of range, ignoring.", curidx);
}
}
break;
case 0x0E: // Currency symbols
FOR_EACH_OBJECT {
uint curidx = 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(GMS_WARN, "GlobalVarChangeInfo: Currency symbol %d out of range, ignoring.", curidx);
}
}
break;
case 0x0F: // Euro introduction datess
FOR_EACH_OBJECT {
uint curidx = gvid +i;
Year year_euro = grf_load_word(&buf);
if (curidx < NUM_CURRENCY) {
_currency_specs[curidx].to_euro = year_euro;
} else {
grfmsg(GMS_WARN, "GlobalVarChangeInfo: Euro intro date %d out of range, ignoring.", curidx);
}
}
break;
case 0x09: // Cargo translation table
case 0x10: // 12 * 32 * B Snow line height table
default:
ret = true;
}
*bufp = buf;
return ret;
}
/* Action 0x00 */
static void FeatureChangeInfo(byte *buf, int len)
{
byte *bufend = buf + len;
int 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 */ NULL,
/* GSF_GLOBALVAR */ GlobalVarChangeInfo,
/* GSF_INDUSTRYTILES */NULL,
/* GSF_INDUSTRIES */ NULL,
/* GSF_CARGOS */ NULL,
/* GSF_SOUNDFX */ NULL,
};
uint8 feature;
uint8 numprops;
uint8 numinfo;
byte engine;
EngineInfo *ei = NULL;
if (len == 1) {
DEBUG(grf, 8) ("Silently ignoring one-byte special sprite 0x00.");
return;
}
check_length(len, 6, "FeatureChangeInfo");
buf++;
feature = grf_load_byte(&buf);
numprops = grf_load_byte(&buf);
numinfo = grf_load_byte(&buf);
engine = grf_load_byte(&buf);
DEBUG(grf, 6) ("FeatureChangeInfo: Feature %d, %d properties, to apply to %d+%d",
feature, numprops, engine, numinfo);
if (feature >= lengthof(handler) || handler[feature] == NULL) {
grfmsg(GMS_WARN, "FeatureChangeInfo: Unsupported feature %d, skipping.", feature);
return;
}
if (feature <= GSF_AIRCRAFT) {
if (engine + numinfo > _vehcounts[feature]) {
grfmsg(GMS_ERROR, "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 */
/* TODO */
/* Hyronymus explained me what does
* this mean and insists on having a
* credit ;-). --pasky */
/* TODO: This needs to be supported by
* LoadUnloadVehicle() first. */
FOR_EACH_OBJECT grf_load_byte(&buf);
ignoring = true;
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(GMS_NOTICE, "FeatureChangeInfo: Ignoring property 0x%02X (not implemented).", prop);
}
}
#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 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 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.
* For stations, must be 12 (hex) for the eighteen
* different sprites that make up a station */
/* TODO: No stations support. */
uint8 feature;
uint num_sets;
uint num_ents;
uint i;
check_length(len, 4, "NewSpriteSet");
buf++;
feature = grf_load_byte(&buf);
num_sets = grf_load_byte(&buf);
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;
DEBUG(grf, 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 (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 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(GMS_WARN, "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 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(GMS_WARN, "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(GMS_WARN, "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(GMS_WARN, "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) */
uint8 feature;
uint8 setid;
uint8 type;
SpriteGroup *group = NULL;
byte *bufend = buf + len;
check_length(len, 5, "NewSpriteGroup");
buf++;
feature = grf_load_byte(&buf);
setid = grf_load_byte(&buf);
type = grf_load_byte(&buf);
if (setid >= _cur_grffile->spritegroups_count) {
// Allocate memory for new sprite group references.
_cur_grffile->spritegroups = realloc(_cur_grffile->spritegroups, (setid + 1) * sizeof(*_cur_grffile->spritegroups));
// 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;
uint i;
/* Check we can load the var size parameter */
check_length(bufend - buf, 1, "NewSpriteGroup (Deterministic) (1)");
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;
}
check_length(bufend - buf, 2 + (varsize * 3) + 2, "NewSpriteGroup (Deterministic) (2)");
/* 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) {
check_length(bufend - buf, 2 + varsize + 3, "NewSpriteGroup (Deterministic) (3)");
}
group->g.determ.num_adjusts++;
group->g.determ.adjusts = realloc(group->g.determ.adjusts, group->g.determ.num_adjusts * sizeof(*group->g.determ.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 : grf_load_byte(&buf);
adjust->variable = grf_load_byte(&buf);
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 = 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 = calloc(group->g.determ.num_ranges, sizeof(*group->g.determ.ranges));
check_length(bufend - buf, 2 + (2 + 2 * varsize) * group->g.determ.num_ranges, "NewSpriteGroup (Deterministic)");
for (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
{
byte triggers;
uint i;
check_length(bufend - buf, 7, "NewSpriteGroup (Randomized) (1)");
group = AllocateSpriteGroup();
group->type = SGT_RANDOMIZED;
group->g.random.var_scope = HASBIT(type, 1) ? VSG_SCOPE_PARENT : VSG_SCOPE_SELF;
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 = calloc(group->g.random.num_groups, sizeof(*group->g.random.groups));
check_length(bufend - buf, 2 * group->g.random.num_groups, "NewSpriteGroup (Randomized) (2)");
for (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);
uint i;
if (_cur_grffile->spriteset_start == 0) {
grfmsg(GMS_ERROR, "NewSpriteGroup: No sprite set to work on! Skipping.");
return;
}
check_length(bufend - buf, 2 * num_loaded + 2 * num_loading, "NewSpriteGroup (Real) (1)");
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 = calloc(num_loaded, sizeof(*group->g.real.loaded));
if (num_loading > 0) group->g.real.loading = calloc(num_loading, sizeof(*group->g.real.loading));
DEBUG(grf, 6) ("NewSpriteGroup: New SpriteGroup 0x%02X, %u views, %u loaded, %u loading",
setid, sprites, num_loaded, num_loading);
for (i = 0; i < num_loaded; i++) {
uint16 spriteid = grf_load_word(&buf);
group->g.real.loaded[i] = CreateGroupFromGroupID(feature, setid, type, spriteid, sprites);
DEBUG(grf, 8) ("NewSpriteGroup: + rg->loaded[%i] = subset %u", i, spriteid);
}
for (i = 0; i < num_loading; i++) {
uint16 spriteid = grf_load_word(&buf);
group->g.real.loading[i] = CreateGroupFromGroupID(feature, setid, type, spriteid, sprites);
DEBUG(grf, 8) ("NewSpriteGroup: + rg->loading[%i] = subset %u", i, spriteid);
}
break;
}
/* Loading of Tile Layout and Production Callback groups would happen here */
default:
grfmsg(GMS_WARN, "NewSpriteGroup: Unsupported feature %d, skipping.", feature);
}
}
}
_cur_grffile->spritegroups[setid] = group;
}
/* 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;
uint8 feature;
uint8 idcount;
bool wagover;
uint8 cidcount;
int c, i;
check_length(len, 6, "FeatureMapSpriteGroup");
feature = buf[1];
idcount = buf[2] & 0x7F;
wagover = (buf[2] & 0x80) == 0x80;
check_length(len, 3 + idcount, "FeatureMapSpriteGroup");
/* If ``n-id'' (or ``idcount'') is zero, this is a ``feature
* callback''. */
if (idcount == 0) {
grfmsg(GMS_WARN, "FeatureMapSpriteGroup: Feature callbacks not implemented yet.");
return;
}
cidcount = buf[3 + idcount];
check_length(len, 4 + idcount + cidcount * 3, "FeatureMapSpriteGroup");
DEBUG(grf, 6) ("FeatureMapSpriteGroup: Feature %d, %d ids, %d cids, wagon override %d.",
feature, idcount, cidcount, wagover);
if (feature > GSF_STATION) {
grfmsg(GMS_WARN, "FeatureMapSpriteGroup: Unsupported feature %d, skipping.", feature);
return;
}
if (feature == GSF_STATION) {
// We do things differently for stations.
for (i = 0; i < idcount; i++) {
uint8 stid = buf[3 + i];
StationSpec *statspec = _cur_grffile->stations[stid];
byte *bp = &buf[4 + idcount];
for (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(GMS_WARN, "FeatureMapSpriteGroup: Spriteset 0x%04X out of range 0x%X or empty, skipping.",
groupid, _cur_grffile->spritegroups_count);
return;
}
if (ctype == 0xFE) ctype = GC_DEFAULT_NA;
if (ctype == 0xFF) ctype = GC_PURCHASE;
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(GMS_WARN, "FeatureMapSpriteGroup: Spriteset 0x%04X out of range 0x%X or empty, skipping.",
groupid, _cur_grffile->spritegroups_count);
return;
}
for (i = 0; i < idcount; i++) {
uint8 stid = buf[3 + i];
StationSpec *statspec = _cur_grffile->stations[stid];
statspec->spritegroup[GC_DEFAULT] = _cur_grffile->spritegroups[groupid];
statspec->groundgroup = _cur_grffile->spritegroups[0];
statspec->grfid = _cur_grffile->grfid;
statspec->localidx = stid;
SetCustomStationSpec(statspec);
}
}
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(GMS_WARN, "FeatureMapSpriteGroup: No sprite set to work on! Skipping.");
return;
}
if (!wagover && last_engines_count != idcount) {
last_engines = realloc(last_engines, idcount);
last_engines_count = idcount;
}
if (wagover) {
if (last_engines_count == 0) {
grfmsg(GMS_ERROR, "FeatureMapSpriteGroup: WagonOverride: No engine to do override with.");
return;
}
DEBUG(grf, 6) ("FeatureMapSpriteGroup: WagonOverride: %u engines, %u wagons.",
last_engines_count, idcount);
}
for (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(GMS_ERROR, "Id %u for feature 0x%02X is out of bounds.", engine_id, feature);
return;
}
DEBUG(grf, 7) ("FeatureMapSpriteGroup: [%d] Engine %d...", i, engine);
for (c = 0; c < cidcount; c++) {
uint8 ctype = grf_load_byte(&bp);
uint16 groupid = grf_load_word(&bp);
DEBUG(grf, 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(GMS_WARN, "FeatureMapSpriteGroup: Spriteset 0x%04X out of range 0x%X or empty, skipping.", groupid, _cur_grffile->spritegroups_count);
return;
}
if (ctype == GC_INVALID) ctype = GC_PURCHASE;
if (wagover) {
// TODO: No multiple cargo types per vehicle yet. --pasky
SetWagonOverrideSprites(engine, _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);
DEBUG(grf, 8) ("-- Default group id 0x%04X", groupid);
for (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(GMS_WARN, "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, _cur_grffile->spritegroups[groupid], last_engines, last_engines_count);
}
} else {
SetCustomEngineSprites(engine, GC_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. */
/* TODO: No support for changing non-vehicle text. Perhaps we shouldn't
* implement it at all, but it could be useful for some "modpacks"
* (completely new scenarios changing all graphics and logically also
* factory names etc). We should then also support all languages (by
* name), not only the original four ones. --pasky
* All of the above are coming. In Time. Some sooner than others :)*/
uint8 feature;
uint8 lang;
uint8 num;
uint16 id;
uint16 endid;
const char* name;
bool new_scheme = _cur_grffile->grf_version >= 7;
check_length(len, 6, "FeatureNewName");
buf++;
feature = grf_load_byte(&buf);
lang = grf_load_byte(&buf);
num = grf_load_byte(&buf);
id = (lang & 0x80) ? grf_load_word(&buf) : grf_load_byte(&buf);
if (feature <= GSF_AIRCRAFT && id < _vehcounts[feature]) {
id += _vehshifts[feature];
}
endid = id + num;
DEBUG(grf, 6) ("FeatureNewName: About to rename engines %d..%d (feature %d) in language 0x%02X.",
id, endid, feature, lang);
name = (const char*)buf; /*transfer read value*/
len -= (lang & 0x80) ? 6 : 5;
for (; id < endid && len > 0; id++) {
size_t ofs = strlen(name) + 1;
if (ofs > 1 && ofs < 128) {
DEBUG(grf, 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 0x48 : { // this will allow things like currencies new strings, and everything else
AddGRFString(_cur_grffile->grfid, id, lang, new_scheme, name, id);
break;
}
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(GMS_WARN, "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(GMS_WARN, "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;
default:
DEBUG(grf, 7) ("FeatureNewName: Unsupported ID (0x%04X)", id);
break;
}
break;
#if 0
case GSF_CANAL :
case GSF_BRIDGE :
case GSF_TOWNHOUSE :
AddGRFString(_cur_spriteid, id, lang, name);
switch (GB(id, 8,8)) {
case 0xC9: /* House name */
default:
DEBUG(grf, 7) ("FeatureNewName: Unsupported ID (0x%04X)", id);
}
break;
case GSF_INDUSTRIES :
case 0x48 : /* for generic strings */
AddGRFString(_cur_spriteid, id, lang, name);
break;
default :
DEBUG(grf,7) ("FeatureNewName: Unsupported feature (0x%02X)", feature);
break;
#endif
}
} else {
/* ofs is the string length + 1, so if the string is empty, ofs
* is 1 */
if (ofs == 1) {
DEBUG(grf, 7) ("FeatureNewName: Can't add empty name");
} else {
DEBUG(grf, 7) ("FeatureNewName: Too long a name (%d)", ofs);
}
}
name += ofs;
len -= (int)ofs;
}
}
/* 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 */
uint8 type;
uint16 num;
SpriteID replace = 0;
check_length(len, 2, "GraphicsNew");
buf++;
type = grf_load_byte(&buf);
num = grf_load_extended(&buf);
switch (type) {
case 0x04: /* Signal graphics */
if (num != 112 && num != 240) {
grfmsg(GMS_WARN, "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(GMS_WARN, "GraphicsNews: Catenary graphics sprite count must be 48, skipping.");
return;
}
replace = SPR_ELRAIL_BASE + 3;
break;
case 0x06: /* Foundations */
if (num != 74) {
grfmsg(GMS_WARN, "GraphicsNews: Foundation graphics sprite count must be 74, skipping.");
return;
}
replace = SPR_SLOPES_BASE;
break;
case 0x08: /* Canal graphics */
if (num != 65) {
grfmsg(GMS_WARN, "GraphicsNews: Canal graphics sprite count must be 65, skipping.");
return;
}
replace = SPR_CANALS_BASE + 5;
break;
default:
grfmsg(GMS_NOTICE, "GraphicsNew: Custom graphics (type 0x%02X) sprite block of length %u (unimplemented, ignoring).\n",
type, num);
return;
}
if (replace == 0) {
grfmsg(GMS_NOTICE, "GraphicsNew: Loading %u sprites of type 0x%02X at SpriteID 0x%04X", num, type, _cur_spriteid);
} else {
grfmsg(GMS_NOTICE, "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 0x83: /* current climate, 0=temp, 1=arctic, 2=trop, 3=toyland */
return _opt.landscape;
case 0x84: /* .grf loading stage, 0=initialization, 1=activation */
return _cur_stage;
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 = 0;
uint revision = 10; // special case: 2.0.1 is 2.0.10
uint build = 73;
return (major << 24) | (minor << 20) | (revision << 16) | (build * 10);
}
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 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(GMS_WARN, "Unsupported in-game variable 0x%02X.", param);
return -1;
}
}
/* 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 = malloc(num);
FioReadBlock(_preload_sprite, num);
}
/* Reset the file position to the start of the next sprite */
FioSeekTo(pos, SEEK_SET);
if (type != 0xFF) {
grfmsg(GMS_NOTICE, "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(GMS_NOTICE, "CfgApply: Ignoring (param %d not set)", (param_num + (param_size - 1) / 4));
break;
}
DEBUG(grf, 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. */
uint8 param;
uint8 paramsize;
uint8 condtype;
uint8 numsprites;
uint32 param_val = 0;
uint32 cond_val = 0;
uint32 mask = 0;
bool result;
GRFLabel *label;
GRFLabel *choice = NULL;
check_length(len, 6, "SkipIf");
buf++;
param = grf_load_byte(&buf);
paramsize = grf_load_byte(&buf);
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) {
DEBUG(grf, 7) ("Param %d undefined, skipping test", param);
return;
}
if (param == 0x88 && GetFileByGRFID(cond_val) == NULL) {
DEBUG(grf, 7) ("GRFID 0x%08X unknown, skipping test", BSWAP32(cond_val));
return;
}
param_val = GetParamVal(param, &cond_val);
/* Apply parameter mask, only for GRF parameters. */
if (param < 0x80) param_val &= mask;
DEBUG(grf, 7) ("Test condtype %d, param 0x%08X, condval 0x%08X", condtype, param_val, cond_val);
switch (condtype) {
case 0: result = !!(param_val & (1 << cond_val));
break;
case 1: result = !(param_val & (1 << cond_val));
break;
/* TODO: For the following, make it to work with paramsize>1. */
case 2: result = (param_val == cond_val);
break;
case 3: result = (param_val != cond_val);
break;
case 4: result = (param_val < cond_val);
break;
case 5: result = (param_val > cond_val);
break;
/* Tests 6 to 10 are only for param 0x88, GRFID checks */
case 6: /* Is GRFID active? */
case 9: /* GRFID is or will be active? */
result = (GetFileByGRFID(cond_val)->flags & 1) == 1;
break;
case 7: /* Is GRFID non-active? */
case 10: /* GRFID is not nor will be active */
result = (GetFileByGRFID(cond_val)->flags & 1) == 0;
break;
case 8: /* GRFID is not but will be active? */
result = 0;
if ((GetFileByGRFID(cond_val)->flags & 1) == 1) {
const GRFFile *file;
for (file = _first_grffile; file != NULL; file = file->next) {
if (file->grfid == cond_val) break;
if (file == _cur_grffile) {
result = 1;
break;
}
}
}
break;
default:
grfmsg(GMS_WARN, "Unsupported test %d. Ignoring.", condtype);
return;
}
if (!result) {
grfmsg(GMS_NOTICE, "Not skipping sprites, test was false.");
return;
}
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. */
for (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(GMS_NOTICE, "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(GMS_NOTICE, "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;
}
}
/* 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 */
/* TODO: Check version. (We should have own versioning done somehow.) */
uint8 version;
uint32 grfid;
const char *name;
const char *info;
check_length(len, 8, "GRFInfo"); buf++;
version = grf_load_byte(&buf);
grfid = grf_load_dword(&buf);
name = (const char*)buf;
info = name + strlen(name) + 1;
_cur_grffile->grfid = grfid;
_cur_grffile->grf_version = version;
_cur_grffile->flags |= 0x0001; /* set active flag */
/* Do swap the GRFID for displaying purposes since people expect that */
DEBUG(grf, 1) ("[%s] Loaded GRFv%d set %08lx - %s:\n%s",
_cur_grffile->filename, version, BSWAP32(grfid), name, info);
}
/* 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 */
uint8 num_sets;
uint i;
buf++; /* skip action byte */
num_sets = grf_load_byte(&buf);
for (i = 0; i < num_sets; i++) {
uint8 num_sprites = grf_load_byte(&buf);
uint16 first_sprite = grf_load_word(&buf);
uint j;
grfmsg(GMS_NOTICE,
"SpriteReplace: [Set %d] Changing %d sprites, beginning with %d",
i, num_sprites, first_sprite
);
for (j = 0; j < num_sprites; j++) {
LoadNextSprite(first_sprite + j, _file_index); // XXX
_nfo_line++;
}
}
}
/* Action 0x0B */
static void GRFError(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 see action 6, only used with built-in message 03 */
/* TODO: For now we just show the message, sometimes incomplete and never translated. */
static const char * const msgstr[4] = {
"Requires at least pseudo-TTDPatch version %s.",
"This file is for %s version of TTD.",
"Designed to be used with %s.",
"Invalid parameter %s.",
};
uint8 severity;
uint8 msgid;
check_length(len, 6, "GRFError");
severity = buf[1];
msgid = buf[3];
// Undocumented TTDPatch feature.
if ((severity & 0x80) == 0 && _cur_stage < 2) {
DEBUG(grf, 7) ("Skipping non-fatal GRFError in stage 1");
return;
}
severity &= 0x7F;
if (msgid == 0xFF) {
grfmsg(severity, "%s", buf+4);
} else {
grfmsg(severity, msgstr[msgid], buf+4);
}
}
/* Action 0x0C */
static void GRFComment(byte *buf, int len)
{
/* <0C> [<ignored...>]
*
* V ignored Anything following the 0C is ignored */
static char comment[256];
if (len == 1) return;
ttd_strlcpy(comment, (char*)(buf + 1), minu(sizeof(comment), len));
grfmsg(GMS_NOTICE, "GRFComment: %s", comment);
}
/* 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)
*/
byte target;
byte oper;
uint32 src1;
uint32 src2;
uint32 data = 0;
uint32 res;
check_length(len, 5, "ParamSet");
buf++;
target = grf_load_byte(&buf);
oper = grf_load_byte(&buf);
src1 = grf_load_byte(&buf);
src2 = grf_load_byte(&buf);
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 (oper & 0x80) {
if (target < 0x80 && target < _cur_grffile->param_end) {
DEBUG(grf, 7) ("Param %u already defined, skipping.", target);
return;
}
oper &= 0x7F;
}
if (src2 == 0xFE) {
if (GB(data, 0, 8) == 0xFF) {
if (data == 0x0000FFFF) {
/* Patch variables */
grfmsg(GMS_WARN, "ParamSet: Reading Patch variables unsupported.");
return;
} else {
/* GRF Resource Management */
grfmsg(GMS_WARN, "ParamSet: GRF Resource Management unsupported.");
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. */
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(GMS_ERROR, "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
DEBUG(grf, 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 {
DEBUG(grf, 7) ("ParamSet: Skipping unknown target 0x%02X", target);
}
break;
}
}
/* 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 */
byte num;
int i;
check_length(len, 1, "GRFInhibit");
buf++, len--;
num = grf_load_byte(&buf); len--;
check_length(len, 4 * num, "GRFInhibit");
for (i = 0; i < num; i++) {
uint32 grfid = grf_load_dword(&buf);
GRFFile *file = GetFileByGRFID(grfid);
/* Unset activation flag */
if (file != NULL) {
grfmsg(GMS_NOTICE, "GRFInhibit: Deactivating file ``%s''", file->filename);
file->flags &= 0xFFFE;
}
}
}
/* Action 0x10 */
static void DefineGotoLabel(byte *buf, int len)
{
/* <10> <label> [<comment>]
*
* B label The label to define
* V comment Optional comment - ignored */
GRFLabel *label;
check_length(len, 1, "DefineGotoLabel");
buf++; len--;
label = malloc(sizeof(*label));
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(GMS_NOTICE, "DefineGotoLabel: GOTO target with label 0x%02X", label->label);
}
static void InitializeGRFSpecial(void)
{
_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
| (0 << 0x1C) // 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
| (0 << 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
| (0 << 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(void)
{
StationSpec *statspec;
GRFFile *file;
uint i;
uint t;
for (file = _first_grffile; file != NULL; file = file->next) {
if (file->stations == NULL) continue;
for (i = 0; i < MAX_STATIONS; i++) {
if (file->stations[i] == NULL) continue;
statspec = file->stations[i];
/* Release renderdata, if it wasn't copied from another custom station spec */
if (!statspec->copied_renderdata) {
for (t = 0; t < statspec->tiles; t++) {
free((void*)statspec->renderdata[t].seq);
}
free(statspec->renderdata);
}
// TODO: Release platforms and layouts
/* Release this station */
free(statspec);
}
/* Free and reset the station data */
free(file->stations);
file->stations = NULL;
}
}
/**
* Reset all NewGRF loaded data
* TODO
*/
static void ResetNewGRFData(void)
{
uint i;
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 (i = 0; i < MAX_BRIDGES; i++) {
if (_bridge[i].sprite_table != NULL) {
uint j;
for (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));
// Unload sprite group data
UnloadWagonOverrides();
UnloadRotorOverrideSprites();
UnloadCustomEngineSprites();
UnloadCustomEngineNames();
ResetEngineListOrder();
// Reset price base data
ResetPriceBaseMultipliers();
/* Reset the curencies array */
ResetCurrencies();
// Reset station classes
ResetStationClasses();
ResetCustomStations();
// Add engine type to engine data. This is needed for the refit precalculation.
AddTypeToEngines();
/* Reset misc GRF features and train list display variables */
_misc_grf_features = 0;
_traininfo_vehicle_pitch = 0;
_traininfo_vehicle_width = 29;
InitializeSpriteGroupPool();
}
/** Reset all NewGRFData that was used only while processing data */
static void ClearTemporaryNewGRFData(void)
{
/* Clear the GOTO labels used for GRF processing */
GRFLabel *l;
for (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 InitNewGRFFile(const GRFConfig *config, int sprite_offset)
{
GRFFile *newfile;
newfile = GetFileByFilename(config->filename);
if (newfile != NULL) {
/* We already loaded it once. */
newfile->sprite_offset = sprite_offset;
_cur_grffile = newfile;
return;
}
newfile = calloc(1, sizeof(*newfile));
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, 0x80 * sizeof(newfile->param[0]));
if (_first_grffile == NULL) {
_cur_grffile = newfile;
_first_grffile = newfile;
} else {
_cur_grffile->next = newfile;
_cur_grffile = newfile;
}
}
/**
* Precalculate refit masks from cargo classes for all vehicles.
*/
static void CalculateRefitMasks(void)
{
EngineID engine;
for (engine = 0; engine < TOTAL_NUM_ENGINES; engine++) {
uint32 mask = 0;
uint32 not_mask = 0;
uint32 xor_mask = _engine_info[engine].refit_mask;
byte i;
if (cargo_allowed[engine] != 0) {
// Build up the list of cargo types from the set cargo classes.
for (i = 0; i < lengthof(cargo_classes); i++) {
if (HASBIT(cargo_allowed[engine], i)) mask |= cargo_classes[i];
if (HASBIT(cargo_disallowed[engine], i)) not_mask |= cargo_classes[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)->flags & RVI_WAGON)
)
)) {
xor_mask = _default_refitmasks[GetEngine(engine)->type - VEH_Train];
}
}
_engine_info[engine].refit_mask = ((mask & ~not_mask) ^ xor_mask) & _landscape_global_cargo_mask[_opt.landscape];
}
}
/* 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, uint 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 uint32 action_mask[] = {0x10000, 0x0000FB40, 0x0000FFFF};
static const SpecialSpriteHandler handlers[] = {
/* 0x00 */ FeatureChangeInfo,
/* 0x01 */ NewSpriteSet,
/* 0x02 */ NewSpriteGroup,
/* 0x03 */ FeatureMapSpriteGroup,
/* 0x04 */ FeatureNewName,
/* 0x05 */ GraphicsNew,
/* 0x06 */ CfgApply,
/* 0x07 */ SkipIf,
/* 0x08 */ GRFInfo,
/* 0x09 */ SkipIf,
/* 0x0A */ SpriteReplace,
/* 0x0B */ GRFError,
/* 0x0C */ GRFComment,
/* 0x0D */ ParamSet,
/* 0x0E */ GRFInhibit,
/* 0x0F */ NULL, // TODO implement
/* 0x10 */ DefineGotoLabel,
};
byte* buf;
byte action;
if (_preload_sprite == NULL) {
/* No preloaded sprite to work with; allocate and read the
* pseudo sprite content. */
buf = malloc(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;
DEBUG(grf, 7) ("DecodeSpecialSprite: Using preloaded pseudo sprite data");
/* Skip the real (original) content of this action. */
FioSeekTo(num, SEEK_CUR);
}
action = buf[0];
if (action >= lengthof(handlers)) {
DEBUG(grf, 7) ("Skipping unknown action 0x%02X", action);
} else if (!HASBIT(action_mask[stage], action)) {
DEBUG(grf, 7) ("Skipping action 0x%02X in stage %d", action, stage);
} else if (handlers[action] == NULL) {
DEBUG(grf, 7) ("Skipping unsupported Action 0x%02X", action);
} else {
DEBUG(grf, 7) ("Handling action 0x%02X in stage %d", action, stage);
handlers[action](buf, num);
}
free(buf);
}
static void LoadNewGRFFile(const char* filename, uint file_index, uint stage)
{
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 != 0) {
_cur_grffile = GetFileByFilename(filename);
if (_cur_grffile == NULL) error("File ``%s'' lost in cache.\n", filename);
if (stage > 1 && !(_cur_grffile->flags & 0x0001)) return;
}
FioOpenFile(file_index, filename);
_file_index = file_index; // XXX
DEBUG(grf, 7) ("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 {
error("Custom .grf has invalid format.");
}
_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);
continue;
} else {
FioSkipBytes(num);
}
} else {
if (_skip_sprites == 0) DEBUG(grf, 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 LoadNewGRF(uint load_index, uint file_index)
{
uint stage;
InitializeGRFSpecial();
ResetNewGRFData();
/* Load newgrf sprites
* in each loading stage, (try to) open each file specified in the config
* and load information from it. */
for (stage = 0; stage <= 2; stage++) {
uint slot = file_index;
GRFConfig *c;
_cur_stage = stage;
_cur_spriteid = load_index;
for (c = _first_grfconfig; c != NULL; c = c->next) {
if (!FioCheckFileExists(c->filename)) {
// TODO: usrerror()
error("NewGRF file missing: %s", c->filename);
}
if (stage == 0) InitNewGRFFile(c, _cur_spriteid);
LoadNewGRFFile(c->filename, slot++, stage);
if (stage == 2) ClearTemporaryNewGRFData();
DEBUG(spritecache, 2) ("Currently %i sprites are loaded", load_index);
}
}
// Pre-calculate all refit masks after loading GRF files
CalculateRefitMasks();
}
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