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openttd/newgrf.c

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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 "bridge.h"
#include "economy.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. */
uint16 _custom_sprites_base;
static int _skip_sprites; // XXX
static uint _file_index; // XXX
extern int _traininfo_vehicle_pitch;
static GRFFile *_cur_grffile;
GRFFile *_first_grffile;
static int _cur_spriteid;
static int _cur_stage;
static int nfo_line;
/* 32 * 8 = 256 flags. Apparently TTDPatch uses this many.. */
static uint32 _ttdpatch_flags[8];
typedef enum grfspec_feature {
GSF_TRAIN,
GSF_ROAD,
GSF_SHIP,
GSF_AIRCRAFT,
GSF_STATION,
GSF_CANAL,
GSF_BRIDGE,
GSF_TOWNHOUSE,
GSF_GLOBALVAR,
} 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,
};
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;
byte *p = *buf;
val = p[0];
val |= p[1] << 8;
*buf = p + 2;
return val;
}
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;
byte *p = *buf;
val = p[0];
val |= p[1] << 8;
val |= p[2] << 16;
val |= p[3] << 24;
*buf = p + 4;
return val;
}
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);
ei[i].railtype = tracktype;
}
} break;
case 0x08: { /* AI passenger service */
/* TODO */
FOR_EACH_OBJECT {
grf_load_byte(&buf);
}
ret = true;
} break;
case 0x09: { /* Speed */
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 {
uint8 capacity = grf_load_byte(&buf);
rvi[i].capacity = capacity;
}
} 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 {
uint8 weight = grf_load_byte(&buf);
SB(rvi[i].weight, 0, 8, weight);
}
} break;
case 0x17: { /* Cost factor */
FOR_EACH_OBJECT {
uint8 cfactor = grf_load_byte(&buf);
rvi[i].base_cost = cfactor;
}
} break;
case 0x18: { /* AI rank */
/* TODO: _railveh_score should be merged to _rail_vehicle_info. */
FOR_EACH_OBJECT {
grf_load_byte(&buf);
}
ret = true;
} 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 <= 0x41)
engclass = 2;
else
break;
rvi[i].engclass = engclass;
}
} break;
case 0x1B: { /* Powered wagons power bonus */
FOR_EACH_OBJECT {
uint16 wag_power = grf_load_word(&buf);
rvi[i].pow_wag_power = wag_power;
}
} break;
case 0x1D: { /* Refit cargo */
FOR_EACH_OBJECT {
uint32 refit_mask = grf_load_dword(&buf);
_engine_info[engine + i].refit_mask = refit_mask;
}
} break;
case 0x1E: { /* Callback */
FOR_EACH_OBJECT {
byte callbacks = grf_load_byte(&buf);
rvi[i].callbackmask = callbacks;
}
} break;
case 0x21: { /* Shorter vehicle */
FOR_EACH_OBJECT {
byte shorten_factor = grf_load_byte(&buf);
rvi[i].shorten_factor = shorten_factor;
}
} break;
case 0x22: { /* Visual effect */
// see note in engine.h about rvi->visual_effect
FOR_EACH_OBJECT {
byte visual = grf_load_byte(&buf);
rvi[i].visual_effect = visual;
}
} break;
case 0x23: { /* Powered wagons weight bonus */
FOR_EACH_OBJECT {
byte wag_weight = grf_load_byte(&buf);
rvi[i].pow_wag_weight = wag_weight;
}
} 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 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 0x1A: /* Sort order */
case 0x1C: /* Refit cost */
case 0x1F: /* Tractive effort */
case 0x20: /* Air drag */
case 0x25: /* User-defined bit mask to set when checking veh. var. 42 */
case 0x26: /* Retire vehicle early */
{
/* TODO */
FOR_EACH_OBJECT {
grf_load_byte(&buf);
}
ret = true;
} break;
default:
ret = true;
}
*bufp = buf;
return ret;
}
static bool RoadVehicleChangeInfo(uint engine, int numinfo, int prop, byte **bufp, int len)
{
RoadVehicleInfo *rvi = &_road_vehicle_info[engine];
byte *buf = *bufp;
int i;
bool ret = false;
switch (prop) {
case 0x08: { /* Speed */
FOR_EACH_OBJECT {
uint8 speed = grf_load_byte(&buf);
rvi[i].max_speed = speed; // ?? units
}
} break;
case 0x09: { /* Running cost factor */
FOR_EACH_OBJECT {
uint8 runcost = grf_load_byte(&buf);
rvi[i].running_cost = runcost;
}
} 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);
if (spriteid == 0xFF)
spriteid = 0xFD; // cars have different custom id in the GRF file
if (spriteid < 0xFD)
spriteid >>= 1;
rvi[i].image_index = spriteid;
}
} break;
case 0x0F: { /* Cargo capacity */
FOR_EACH_OBJECT {
uint16 capacity = grf_load_byte(&buf);
rvi[i].capacity = capacity;
}
} 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 {
uint8 cost_factor = grf_load_byte(&buf);
rvi[i].base_cost = cost_factor; // ?? is it base_cost?
}
} break;
case 0x12: { /* SFX */
FOR_EACH_OBJECT {
uint8 sfx = grf_load_byte(&buf);
rvi[i].sfx = sfx;
}
} 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 {
uint32 refit_mask = grf_load_dword(&buf);
_engine_info[ROAD_ENGINES_INDEX + engine + i].refit_mask = refit_mask;
}
} 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 0x17: /* Callback */
case 0x18: /* Tractive effort */
case 0x19: /* Air drag */
case 0x1A: /* Refit cost */
case 0x1B: /* Retire vehicle early */
case 0x1C: /* Miscellaneous flags */
{
/* TODO */
FOR_EACH_OBJECT {
grf_load_byte(&buf);
}
ret = true;
break;
}
default:
ret = true;
}
*bufp = buf;
return ret;
}
static bool ShipVehicleChangeInfo(uint engine, int numinfo, int prop, byte **bufp, int len)
{
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);
if (spriteid == 0xFF)
spriteid = 0xFD; // ships have different custom id in the GRF file
if (spriteid < 0xFD)
spriteid >>= 1;
svi[i].image_index = spriteid;
}
} break;
case 0x09: { /* Refittable */
FOR_EACH_OBJECT {
uint8 refittable = grf_load_byte(&buf);
svi[i].refittable = refittable;
}
} break;
case 0x0A: { /* Cost factor */
FOR_EACH_OBJECT {
uint8 cost_factor = grf_load_byte(&buf);
svi[i].base_cost = cost_factor; // ?? is it base_cost?
}
} break;
case 0x0B: { /* Speed */
FOR_EACH_OBJECT {
uint8 speed = grf_load_byte(&buf);
svi[i].max_speed = speed; // ?? units
}
} 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 {
uint16 capacity = grf_load_word(&buf);
svi[i].capacity = capacity;
}
} break;
case 0x0F: { /* Running cost factor */
FOR_EACH_OBJECT {
uint8 runcost = grf_load_byte(&buf);
svi[i].running_cost = runcost;
}
} break;
case 0x10: { /* SFX */
FOR_EACH_OBJECT {
uint8 sfx = grf_load_byte(&buf);
svi[i].sfx = sfx;
}
} break;
case 0x11: { /* Cargos available for refitting */
FOR_EACH_OBJECT {
uint32 refit_mask = grf_load_dword(&buf);
_engine_info[SHIP_ENGINES_INDEX + engine + i].refit_mask = refit_mask;
}
} 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 0x12: /* Callback */
case 0x13: /* Refit cost */
case 0x14: /* Ocean speed fraction */
case 0x15: /* Canal speed fraction */
case 0x16: /* Retire vehicle early */
case 0x17: /* Miscellaneous flags */
{
/* TODO */
FOR_EACH_OBJECT {
grf_load_byte(&buf);
}
ret = true;
} break;
default:
ret = true;
}
*bufp = buf;
return ret;
}
static bool AircraftVehicleChangeInfo(uint engine, int numinfo, int prop, byte **bufp, int len)
{
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);
if (spriteid == 0xFF)
spriteid = 0xFD; // ships have different custom id in the GRF file
if (spriteid < 0xFD)
spriteid >>= 1;
avi[i].image_index = spriteid;
}
} break;
case 0x09: { /* Helicopter */
FOR_EACH_OBJECT {
uint8 heli = grf_load_byte(&buf);
avi[i].subtype &= ~0x01; // remove old property
avi[i].subtype |= (heli == 0) ? 0 : 1;
}
} break;
case 0x0A: { /* Large */
FOR_EACH_OBJECT {
uint8 large = grf_load_byte(&buf);
avi[i].subtype &= ~0x02; // remove old property
avi[i].subtype |= (large == 1) ? 2 : 0;
}
} break;
case 0x0B: { /* Cost factor */
FOR_EACH_OBJECT {
uint8 cost_factor = grf_load_byte(&buf);
avi[i].base_cost = cost_factor; // ?? is it base_cost?
}
} break;
case 0x0C: { /* Speed */
FOR_EACH_OBJECT {
uint8 speed = grf_load_byte(&buf);
avi[i].max_speed = speed; // ?? units
}
} break;
case 0x0D: { /* Acceleration */
FOR_EACH_OBJECT {
uint8 accel = grf_load_byte(&buf);
avi[i].acceleration = accel;
}
} break;
case 0x0E: { /* Running cost factor */
FOR_EACH_OBJECT {
uint8 runcost = grf_load_byte(&buf);
avi[i].running_cost = runcost;
}
} break;
case 0x0F: { /* Passenger capacity */
FOR_EACH_OBJECT {
uint16 capacity = grf_load_word(&buf);
avi[i].passenger_capacity = capacity;
}
} break;
case 0x11: { /* Mail capacity */
FOR_EACH_OBJECT {
uint8 capacity = grf_load_byte(&buf);
avi[i].mail_capacity = capacity;
}
} break;
case 0x12: { /* SFX */
FOR_EACH_OBJECT {
uint8 sfx = grf_load_byte(&buf);
avi[i].sfx = sfx;
}
} break;
case 0x13: { /* Cargos available for refitting */
FOR_EACH_OBJECT {
uint32 refit_mask = grf_load_dword(&buf);
_engine_info[AIRCRAFT_ENGINES_INDEX + engine + i].refit_mask = refit_mask;
}
} 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 0x14: /* Callback */
case 0x15: /* Refit cost */
case 0x16: /* Retire vehicle early */
case 0x17: /* Miscellaneous flags */
{
/* TODO */
FOR_EACH_OBJECT {
grf_load_byte(&buf);
}
ret = true;
} break;
default:
ret = true;
}
*bufp = buf;
return ret;
}
static bool StationChangeInfo(uint stid, int numinfo, int prop, byte **bufp, int len)
{
byte *buf = *bufp;
int i;
int ret = 0;
/* This is one single huge TODO. It doesn't handle anything more than
* just waypoints for now. */
//printf("sci %d %d [0x%02x]\n", stid, numinfo, prop);
switch (prop) {
case 0x08:
{ /* Class ID */
FOR_EACH_OBJECT {
StationSpec *stat = &_cur_grffile->stations[stid + i];
uint32 classid;
/* classid, for a change, is always little-endian */
classid = *(buf++) << 24;
classid |= *(buf++) << 16;
classid |= *(buf++) << 8;
classid |= *(buf++);
stat->sclass = AllocateStationClass(classid);
}
break;
}
case 0x09:
{ /* Define sprite layout */
FOR_EACH_OBJECT {
StationSpec *stat = &_cur_grffile->stations[stid + i];
int t;
stat->tiles = grf_load_extended(&buf);
stat->renderdata = calloc(stat->tiles, sizeof(*stat->renderdata));
for (t = 0; t < stat->tiles; t++) {
DrawTileSprites *dts = &stat->renderdata[t];
int seq_count = 0;
PalSpriteID ground_sprite;
ground_sprite = grf_load_dword(&buf);
if (ground_sprite == 0) {
static const DrawTileSeqStruct empty = {0x80, 0, 0, 0, 0, 0, 0};
dts->seq = &empty;
continue;
}
if (HASBIT(ground_sprite, 31)) {
// Bit 31 indicates that we should use a custom sprite.
dts->ground_sprite = GB(ground_sprite, 0, 15) - 0x42D;
dts->ground_sprite += _cur_grffile->first_spriteset;
} else {
dts->ground_sprite = ground_sprite;
}
dts->seq = NULL;
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->width = grf_load_byte(&buf);
dtss->height = grf_load_byte(&buf);
dtss->unk = grf_load_byte(&buf);
dtss->image = grf_load_dword(&buf) - 0x42d;
}
}
}
break;
}
case 0x0a:
{ /* Copy sprite layout */
FOR_EACH_OBJECT {
StationSpec *stat = &_cur_grffile->stations[stid + i];
byte srcid = grf_load_byte(&buf);
const StationSpec *srcstat = &_cur_grffile->stations[srcid];
int t;
stat->tiles = srcstat->tiles;
stat->renderdata = calloc(stat->tiles, sizeof(*stat->renderdata));
for (t = 0; t < stat->tiles; t++) {
DrawTileSprites *dts = &stat->renderdata[t];
const DrawTileSprites *sdts = &srcstat->renderdata[t];
DrawTileSeqStruct const *sdtss = sdts->seq;
int seq_count = 0;
dts->ground_sprite = sdts->ground_sprite;
if (!dts->ground_sprite) {
static const DrawTileSeqStruct empty = {0x80, 0, 0, 0, 0, 0, 0};
dts->seq = &empty;
continue;
}
dts->seq = NULL;
while (1) {
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 = *sdtss;
if ((byte) dtss->delta_x == 0x80) break;
sdtss++;
}
}
}
break;
}
case 0x0b:
{ /* Callback */
/* TODO */
FOR_EACH_OBJECT {
grf_load_byte(&buf);
}
ret = 1;
break;
}
case 0x0C:
{ /* Platforms number */
FOR_EACH_OBJECT {
StationSpec *stat = &_cur_grffile->stations[stid + i];
stat->allowed_platforms = ~grf_load_byte(&buf);
}
break;
}
case 0x0D:
{ /* Platforms length */
FOR_EACH_OBJECT {
StationSpec *stat = &_cur_grffile->stations[stid + i];
stat->allowed_lengths = ~grf_load_byte(&buf);
}
break;
}
case 0x0e:
{ /* Define custom layout */
FOR_EACH_OBJECT {
StationSpec *stat = &_cur_grffile->stations[stid + i];
while (buf < *bufp + len) {
byte length = grf_load_byte(&buf);
byte number = grf_load_byte(&buf);
StationLayout layout;
int l, p;
if (length == 0 || number == 0) break;
//debug("l %d > %d ?", length, stat->lengths);
if (length > stat->lengths) {
stat->platforms = realloc(stat->platforms, length);
memset(stat->platforms + stat->lengths, 0, length - stat->lengths);
stat->layouts = realloc(stat->layouts, length * sizeof(*stat->layouts));
memset(stat->layouts + stat->lengths, 0,
(length - stat->lengths) * sizeof(*stat->layouts));
stat->lengths = length;
}
l = length - 1; // index is zero-based
//debug("p %d > %d ?", number, stat->platforms[l]);
if (number > stat->platforms[l]) {
stat->layouts[l] = realloc(stat->layouts[l],
number * sizeof(**stat->layouts));
// We expect NULL being 0 here, but C99 guarantees that.
memset(stat->layouts[l] + stat->platforms[l], 0,
(number - stat->platforms[l]) * sizeof(**stat->layouts));
stat->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--;
assert(p >= 0);
free(stat->layouts[l][p]);
stat->layouts[l][p] = layout;
}
}
break;
}
case 0x0f:
{ /* Copy custom layout */
/* TODO */
FOR_EACH_OBJECT {
grf_load_byte(&buf);
}
ret = 1;
break;
}
case 0x10:
{ /* Little/lots cargo threshold */
/* TODO */
FOR_EACH_OBJECT {
grf_load_word(&buf);
}
ret = 1;
break;
}
case 0x11:
{ /* Pylon placement */
/* TODO; makes sense only for electrified tracks */
FOR_EACH_OBJECT {
grf_load_word(&buf);
}
ret = 1;
break;
}
case 0x12:
{ /* Cargo types for random triggers */
/* TODO */
FOR_EACH_OBJECT {
grf_load_dword(&buf);
}
ret = 1;
break;
}
default:
ret = 1;
break;
}
*bufp = buf;
return ret;
}
static bool BridgeChangeInfo(uint brid, int numinfo, int prop, byte **bufp, int len)
{
byte *buf = *bufp;
int i;
int ret = 0;
switch (prop) {
case 0x08: /* Year of availability */
FOR_EACH_OBJECT {
_bridge[brid + i].avail_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);
byte table, sprite;
if (bridge->sprite_table == NULL) {
/* Allocate memory for sprite table pointers and set to NULL */
bridge->sprite_table = malloc(7 * sizeof(*bridge->sprite_table));
for (table = 0; table < 7; table++)
bridge->sprite_table[table] = NULL;
}
for (table = tableid; table < tableid + numtables; table++) {
if (table < 7) {
if (bridge->sprite_table[table] == NULL) {
bridge->sprite_table[table] = malloc(32 * sizeof(**bridge->sprite_table));
}
for (sprite = 0; sprite < 32; sprite++)
bridge->sprite_table[table][sprite] = grf_load_dword(&buf);
} else {
grfmsg(GMS_WARN, "BridgeChangeInfo: Table %d >= 7, skipping.", table);
// Skip past invalid data.
for (sprite = 0; sprite < 32; 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 = 1;
}
*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;
default:
ret = true;
}
*bufp = buf;
return ret;
}
/* Action 0x00 */
static void VehicleChangeInfo(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,
};
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, "VehicleChangeInfo");
feature = buf[1];
numprops = buf[2];
numinfo = buf[3];
engine = buf[4];
DEBUG(grf, 6) ("VehicleChangeInfo: Feature %d, %d properties, to apply to %d+%d",
feature, numprops, engine, numinfo);
if (feature >= lengthof(handler) || handler[feature] == NULL) {
grfmsg(GMS_WARN, "VehicleChangeInfo: Unsupported feature %d, skipping.", feature);
return;
}
if (feature <= GSF_AIRCRAFT) {
if (engine + numinfo > _vehcounts[feature]) {
grfmsg(GMS_ERROR, "VehicleChangeInfo: Last engine ID %d out of bounds (max %d), skipping.", engine + numinfo, _vehcounts[feature]);
return;
}
ei = &_engine_info[engine + _vehshifts[feature]];
}
buf += 5;
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 {
uint16 date = grf_load_word(&buf);
ei[i].base_intro = date;
}
} break;
case 0x02: { /* Decay speed */
FOR_EACH_OBJECT {
uint8 decay = grf_load_byte(&buf);
ei[i].unk2 &= 0x80;
ei[i].unk2 |= decay & 0x7f;
}
} break;
case 0x03: { /* Vehicle life */
FOR_EACH_OBJECT {
uint8 life = grf_load_byte(&buf);
ei[i].lifelength = life;
}
} break;
case 0x04: { /* Model life */
FOR_EACH_OBJECT {
uint8 life = grf_load_byte(&buf);
ei[i].base_life = life;
}
} break;
case 0x06: { /* Climates available */
FOR_EACH_OBJECT {
uint8 climates = grf_load_byte(&buf);
ei[i].climates = climates;
}
} 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, "VehicleChangeInfo: Ignoring property %x (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 = calloc(1, sizeof(*group));
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 &= 0xFF;
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(uint16 value, byte sprites)
{
SpriteGroup *group = calloc(1, sizeof(*group));
group->type = SGT_RESULT;
group->g.result.result = value;
group->g.result.sprites = 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++;
}
}
/* Action 0x02 */
static void NewSpriteGroup(byte *buf, int len)
{
byte *bufend = buf + 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) */
/* TODO: No 0x80-types (ugh). */
/* TODO: Also, empty sprites aren't handled for now. Need to investigate
* the "opacity" rules for these, that is which sprite to fall back to
* when. --pasky */
uint8 feature;
uint8 setid;
/* XXX: For stations, these two are "little cargo" and "lotsa cargo" sets. */
uint8 numloaded;
uint8 numloading;
SpriteGroup *group;
RealSpriteGroup *rg;
byte *loaded_ptr;
byte *loading_ptr;
int i;
check_length(len, 5, "NewSpriteGroup");
feature = buf[1];
setid = buf[2];
numloaded = buf[3];
numloading = buf[4];
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;
}
if (numloaded == 0x81 || numloaded == 0x82) {
DeterministicSpriteGroup *dg;
uint16 groupid;
int i;
// Ok, this is gonna get a little wild, so hold your breath...
/* This stuff is getting actually evaluated in
* EvalDeterministicSpriteGroup(). */
buf += 4; len -= 4;
check_length(len, 6, "NewSpriteGroup 0x81/0x82");
group = calloc(1, sizeof(*group));
group->type = SGT_DETERMINISTIC;
dg = &group->g.determ;
/* XXX: We don't free() anything, assuming that if there was
* some action here before, it got associated by action 3.
* We should perhaps keep some refcount? --pasky */
dg->var_scope = numloaded == 0x82 ? VSG_SCOPE_PARENT : VSG_SCOPE_SELF;
dg->variable = grf_load_byte(&buf);
/* Variables 0x60 - 0x7F include an extra parameter */
if (IS_BYTE_INSIDE(dg->variable, 0x60, 0x80))
dg->parameter = grf_load_byte(&buf);
dg->shift_num = grf_load_byte(&buf);
dg->and_mask = grf_load_byte(&buf);
dg->operation = dg->shift_num >> 6; /* w00t */
dg->shift_num &= 0x3F;
if (dg->operation != DSG_OP_NONE) {
dg->add_val = grf_load_byte(&buf);
dg->divmod_val = grf_load_byte(&buf);
}
/* (groupid & 0x8000) means this is callback result. */
dg->num_ranges = grf_load_byte(&buf);
dg->ranges = calloc(dg->num_ranges, sizeof(*dg->ranges));
for (i = 0; i < dg->num_ranges; i++) {
groupid = grf_load_word(&buf);
if (HASBIT(groupid, 15)) {
dg->ranges[i].group = NewCallBackResultSpriteGroup(groupid);
dg->ranges[i].group->ref_count++;
} else if (groupid >= _cur_grffile->spritegroups_count || _cur_grffile->spritegroups[groupid] == NULL) {
grfmsg(GMS_WARN, "NewSpriteGroup(%02x:0x%x): Groupid %04x does not exist, leaving empty.", setid, numloaded, groupid);
dg->ranges[i].group = NULL;
} else {
dg->ranges[i].group = _cur_grffile->spritegroups[groupid];
dg->ranges[i].group->ref_count++;
}
dg->ranges[i].low = grf_load_byte(&buf);
dg->ranges[i].high = grf_load_byte(&buf);
}
groupid = grf_load_word(&buf);
if (HASBIT(groupid, 15)) {
dg->default_group = NewCallBackResultSpriteGroup(groupid);
dg->default_group->ref_count++;
} else if (groupid >= _cur_grffile->spritegroups_count || _cur_grffile->spritegroups[groupid] == NULL) {
grfmsg(GMS_WARN, "NewSpriteGroup(%02x:0x%x): Groupid %04x does not exist, leaving empty.", setid, numloaded, groupid);
dg->default_group = NULL;
} else {
dg->default_group = _cur_grffile->spritegroups[groupid];
dg->default_group->ref_count++;
}
if (_cur_grffile->spritegroups[setid] != NULL)
UnloadSpriteGroup(&_cur_grffile->spritegroups[setid]);
_cur_grffile->spritegroups[setid] = group;
group->ref_count++;
return;
} else if (numloaded == 0x80 || numloaded == 0x83) {
RandomizedSpriteGroup *rg;
int i;
/* This stuff is getting actually evaluated in
* EvalRandomizedSpriteGroup(). */
buf += 4;
len -= 4;
check_length(len, 6, "NewSpriteGroup 0x80/0x83");
group = calloc(1, sizeof(*group));
group->type = SGT_RANDOMIZED;
rg = &group->g.random;
/* XXX: We don't free() anything, assuming that if there was
* some action here before, it got associated by action 3.
* We should perhaps keep some refcount? --pasky */
rg->var_scope = numloaded == 0x83 ? VSG_SCOPE_PARENT : VSG_SCOPE_SELF;
rg->triggers = grf_load_byte(&buf);
rg->cmp_mode = rg->triggers & 0x80;
rg->triggers &= 0x7F;
rg->lowest_randbit = grf_load_byte(&buf);
rg->num_groups = grf_load_byte(&buf);
rg->groups = calloc(rg->num_groups, sizeof(*rg->groups));
for (i = 0; i < rg->num_groups; i++) {
uint16 groupid = grf_load_word(&buf);
if (HASBIT(groupid, 15)) {
rg->groups[i] = NewCallBackResultSpriteGroup(groupid);
rg->groups[i]->ref_count++;
} else if (groupid >= _cur_grffile->spritegroups_count || _cur_grffile->spritegroups[groupid] == NULL) {
grfmsg(GMS_WARN, "NewSpriteGroup(%02x:0x%x): Groupid %04x does not exist, leaving empty.", setid, numloaded, groupid);
rg->groups[i] = NULL;
} else {
rg->groups[i] = _cur_grffile->spritegroups[groupid];
rg->groups[i]->ref_count++;
}
}
if (_cur_grffile->spritegroups[setid] != NULL)
UnloadSpriteGroup(&_cur_grffile->spritegroups[setid]);
_cur_grffile->spritegroups[setid] = group;
group->ref_count++;
return;
}
if (!_cur_grffile->spriteset_start) {
grfmsg(GMS_ERROR, "NewSpriteGroup: No sprite set to work on! Skipping.");
return;
}
if (_cur_grffile->spriteset_feature != feature) {
grfmsg(GMS_ERROR, "NewSpriteGroup: Group feature %x doesn't match set feature %x! Playing it risky and trying to use it anyway.", feature, _cur_grffile->spriteset_feature);
// return; // XXX: we can't because of MB's newstats.grf --pasky
}
check_length(bufend - buf, 5, "NewSpriteGroup");
buf += 5;
check_length(bufend - buf, 2 * numloaded, "NewSpriteGroup");
loaded_ptr = buf;
loading_ptr = buf + 2 * numloaded;
if (_cur_grffile->first_spriteset == 0)
_cur_grffile->first_spriteset = _cur_grffile->spriteset_start;
if (numloaded > 16) {
grfmsg(GMS_WARN, "NewSpriteGroup: More than 16 sprites in group %x, skipping the rest.", setid);
numloaded = 16;
}
if (numloading > 16) {
grfmsg(GMS_WARN, "NewSpriteGroup: More than 16 sprites in group %x, skipping the rest.", setid);
numloading = 16;
}
group = calloc(1, sizeof(*group));
group->type = SGT_REAL;
rg = &group->g.real;
rg->sprites_per_set = _cur_grffile->spriteset_numents;
rg->loaded_count = numloaded;
rg->loading_count = numloading;
DEBUG(grf, 6) ("NewSpriteGroup: New SpriteGroup 0x%02hhx, %u views, %u loaded, %u loading, sprites %u - %u",
setid, rg->sprites_per_set, rg->loaded_count, rg->loading_count,
_cur_grffile->spriteset_start - _cur_grffile->sprite_offset,
_cur_grffile->spriteset_start + (_cur_grffile->spriteset_numents * (numloaded + numloading)) - _cur_grffile->sprite_offset);
for (i = 0; i < numloaded; i++) {
uint16 spriteset_id = grf_load_word(&loaded_ptr);
if (HASBIT(spriteset_id, 15)) {
rg->loaded[i] = NewCallBackResultSpriteGroup(spriteset_id);
} else {
rg->loaded[i] = NewResultSpriteGroup(_cur_grffile->spriteset_start + spriteset_id * _cur_grffile->spriteset_numents, rg->sprites_per_set);
}
rg->loaded[i]->ref_count++;
DEBUG(grf, 8) ("NewSpriteGroup: + rg->loaded[%i] = %u (subset %u)", i, rg->loaded[i]->g.result.result, spriteset_id);
}
for (i = 0; i < numloading; i++) {
uint16 spriteset_id = grf_load_word(&loading_ptr);
if (HASBIT(spriteset_id, 15)) {
rg->loading[i] = NewCallBackResultSpriteGroup(spriteset_id);
} else {
rg->loading[i] = NewResultSpriteGroup(_cur_grffile->spriteset_start + spriteset_id * _cur_grffile->spriteset_numents, rg->sprites_per_set);
}
rg->loading[i]->ref_count++;
DEBUG(grf, 8) ("NewSpriteGroup: + rg->loading[%i] = %u (subset %u)", i, rg->loading[i]->g.result.result, spriteset_id);
}
if (_cur_grffile->spritegroups[setid] != NULL)
UnloadSpriteGroup(&_cur_grffile->spritegroups[setid]);
_cur_grffile->spritegroups[setid] = group;
group->ref_count++;
}
/* Action 0x03 */
static void NewVehicle_SpriteGroupMapping(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, 7, "VehicleMapSpriteGroup");
feature = buf[1];
idcount = buf[2] & 0x7F;
wagover = (buf[2] & 0x80) == 0x80;
check_length(len, 3 + idcount, "VehicleMapSpriteGroup");
cidcount = buf[3 + idcount];
check_length(len, 4 + idcount + cidcount * 3, "VehicleMapSpriteGroup");
DEBUG(grf, 6) ("VehicleMapSpriteGroup: Feature %d, %d ids, %d cids, wagon override %d.",
feature, idcount, cidcount, wagover);
if (feature > GSF_STATION) {
grfmsg(GMS_WARN, "VehicleMapSpriteGroup: 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 *stat = &_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, "VehicleMapSpriteGroup: Spriteset %x out of range %x or empty, skipping.",
groupid, _cur_grffile->spritegroups_count);
return;
}
if (ctype != 0xFF) {
/* TODO: No support for any other cargo. */
continue;
}
stat->spritegroup[1] = _cur_grffile->spritegroups[groupid];
stat->spritegroup[1]->ref_count++;
}
}
{
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, "VehicleMapSpriteGroup: Spriteset %x out of range %x or empty, skipping.",
groupid, _cur_grffile->spritegroups_count);
return;
}
for (i = 0; i < idcount; i++) {
uint8 stid = buf[3 + i];
StationSpec *stat = &_cur_grffile->stations[stid];
stat->spritegroup[0] = _cur_grffile->spritegroups[groupid];
stat->spritegroup[0]->ref_count++;
stat->grfid = _cur_grffile->grfid;
stat->localidx = stid;
SetCustomStation(stat);
}
}
return;
}
/* If ``n-id'' (or ``idcount'') is zero, this is a ``feature
* callback''. I have no idea how this works, so we will ignore it for
* now. --octo */
if (idcount == 0) {
grfmsg(GMS_NOTICE, "NewMapping: Feature callbacks not implemented yet.");
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 || !_cur_grffile->spritegroups) {
grfmsg(GMS_WARN, "VehicleMapSpriteGroup: 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, "VehicleMapSpriteGroup: WagonOverride: No engine to do override with.");
return;
}
DEBUG(grf, 6) ("VehicleMapSpriteGroup: 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 %x is out of bounds.",
engine_id, feature);
return;
}
DEBUG(grf, 7) ("VehicleMapSpriteGroup: [%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) ("VehicleMapSpriteGroup: * [%d] Cargo type %x, group id %x", c, ctype, groupid);
if (groupid >= _cur_grffile->spritegroups_count || _cur_grffile->spritegroups[groupid] == NULL) {
grfmsg(GMS_WARN, "VehicleMapSpriteGroup: Spriteset %x out of range %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 %x", 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, "VehicleMapSpriteGroup: Spriteset %x out of range %x or empty, skipping.", groupid, _cur_grffile->spritegroups_count);
return;
}
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, GC_DEFAULT, _cur_grffile->spritegroups[groupid]);
last_engines[i] = engine;
}
}
}
}
/* Action 0x04 */
static void VehicleNewName(byte *buf, int len)
{
/* <04> <veh-type> <language-id> <num-veh> <offset> <data...>
*
* B veh-type see action 0
* B language-id language ID with bit 7 cleared (see below)
* 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
* 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 */
/* TODO: Support for custom station class/type names. */
uint8 feature;
uint8 lang;
uint8 num;
uint16 id;
uint16 endid;
const char* name;
check_length(len, 6, "VehicleNewName");
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 > 3) {
DEBUG(grf, 7) ("VehicleNewName: Unsupported feature %d, skipping", feature);
return;
}
id += _vehshifts[feature];
endid = id + num;
DEBUG(grf, 6) ("VehicleNewName: About to rename engines %d..%d (feature %d) in language 0x%x.",
id, endid, feature, lang);
if (lang & 0x80) {
grfmsg(GMS_WARN, "VehicleNewName: No support for changing in-game texts. Skipping.");
return;
}
if (!(lang & 3)) {
/* XXX: If non-English name, silently skip it. */
DEBUG(grf, 7) ("VehicleNewName: Skipping non-English name.");
return;
}
name = (const char*)buf;
len -= (lang & 0x80) ? 6 : 5;
for (; id < endid && len > 0; id++) {
size_t ofs = strlen(name) + 1;
if (ofs < 128) {
DEBUG(grf, 8) ("VehicleNewName: %d <- %s", id, name);
SetCustomEngineName(id, name);
} else {
DEBUG(grf, 7) ("VehicleNewName: Too long a name (%d)", ofs);
}
name += ofs;
len -= 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;
check_length(len, 2, "GraphicsNew");
buf++;
type = grf_load_byte(&buf);
num = grf_load_extended(&buf);
grfmsg(GMS_NOTICE, "GraphicsNew: Custom graphics (type %x) sprite block of length %d (unimplemented, ignoring).\n",
type, num);
}
/* 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. */
/* TODO */
grfmsg(GMS_NOTICE, "CfgApply: Ignoring (not implemented).\n");
}
/* 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;
bool result;
check_length(len, 6, "SkipIf");
param = buf[1];
paramsize = buf[2];
condtype = buf[3];
if (condtype < 2) {
/* Always 1 for bit tests, the given value should be ignored. */
paramsize = 1;
}
buf += 4;
switch (paramsize) {
case 4: cond_val = grf_load_dword(&buf); break;
case 2: cond_val = grf_load_word(&buf); break;
case 1: cond_val = grf_load_byte(&buf); break;
default: break;
}
switch (param) {
case 0x83: /* current climate, 0=temp, 1=arctic, 2=trop, 3=toyland */
param_val = _opt.landscape;
break;
case 0x84: /* .grf loading stage, 0=initialization, 1=activation */
param_val = _cur_stage;
break;
case 0x85: /* TTDPatch flags, only for bit tests */
param_val = _ttdpatch_flags[cond_val / 0x20];
cond_val %= 0x20;
break;
case 0x86: /* road traffic side, bit 4 clear=left, set=right */
param_val = _opt.road_side << 4;
break;
case 0x88: { /* see if specified GRFID is active */
param_val = (GetFileByGRFID(cond_val) != NULL);
} break;
case 0x8B: { /* TTDPatch version */
uint major = 2;
uint minor = 0;
uint revision = 10; // special case: 2.0.1 is 2.0.10
uint build = 49;
param_val = (major << 24) | (minor << 20) | (revision << 16) | (build * 10);
break;
}
case 0x8D: /* TTD Version, 00=DOS, 01=Windows */
param_val = !_use_dos_palette;
break;
case 0x8E:
param_val = _traininfo_vehicle_pitch;
break;
case 0x9D: /* TTD Platform, 00=TTDPatch, 01=OpenTTD */
param_val = 1;
break;
/* TODO */
case 0x8F: /* Track type cost multipliers */
default:
if (param < 0x80) {
/* Parameter. */
param_val = _cur_grffile->param[param];
} else {
/* In-game variable. */
grfmsg(GMS_WARN, "Unsupported in-game variable 0x%02X. Ignoring test.", param);
return;
}
}
DEBUG(grf, 7) ("Test condtype %d, param %x, condval %x", 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;
case 6: result = !!param_val; /* GRFID is active (only for param-num=88) */
break;
case 7: result = !param_val; /* GRFID is not active (only for param-num=88) */
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);
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;
}
}
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");
version = buf[1];
/* this is de facto big endian - grf_load_dword() unsuitable */
grfid = buf[2] << 24 | buf[3] << 16 | buf[4] << 8 | buf[5];
name = (const char*)(buf + 6);
info = name + strlen(name) + 1;
_cur_grffile->grfid = grfid;
_cur_grffile->flags |= 0x0001; /* set active flag */
DEBUG(grf, 1) ("[%s] Loaded GRFv%d set %08lx - %s:\n%s",
_cur_grffile->filename, version, grfid, name, info);
}
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++;
}
}
}
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 == 0)
return;
severity &= 0x7F;
if (msgid == 0xFF) {
grfmsg(severity, "%s", buf+4);
} else {
grfmsg(severity, msgstr[msgid], buf+4);
}
}
static void GRFComment(byte *buf, int len)
{
/* <0C> [<ignored...>]
*
* V ignored Anything following the 0C is ignored */
}
/* 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 (_cur_grffile->param_end < target)
oper &= 0x7F;
else
return;
}
/* 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. */
if (src1 == 0xFF) {
src1 = data;
} else {
src1 = _cur_grffile->param_end >= src1 ? _cur_grffile->param[src1] : 0;
}
if (src2 == 0xFF) {
src2 = data;
} else {
src2 = _cur_grffile->param_end >= src2 ? _cur_grffile->param[src2] : 0;
}
/* 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;
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;
}
}
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;
}
}
}
static void InitializeGRFSpecial(void)
{
/* FIXME: We should rather reflect reality in _ttdpatch_flags[]. */
_ttdpatch_flags[0] = (_patches.always_small_airport ? (1 << 0x0C) : 0) /* keepsmallairport */
| (1 << 0x0E) /* largestations */
| (_patches.longbridges ? (1 << 0x0F) : 0) /* longbridges */
| (1 << 0x12) /* presignals */
| (1 << 0x13) /* extpresignals */
| (_patches.never_expire_vehicles ? (1 << 0x16) : 0) /* enginespersist */
| (1 << 0x1B); /* multihead */
_ttdpatch_flags[1] = (_patches.mammoth_trains ? (1 << 0x08) : 0) /* mammothtrains */
| (1 << 0x09) /* trainrefit */
| (1 << 0x14) /* bridgespeedlimits */
| (1 << 0x16) /* eternalgame */
| (1 << 0x17) /* newtrains */
| (1 << 0x18) /* newrvs */
| (1 << 0x19) /* newships */
| (1 << 0x1A) /* newplanes */
| (_patches.signal_side ? (1 << 0x1B) : 0); /* signalsontrafficside */
/* Uncomment following if you want to fool the GRF file.
* Some GRF files will refuse to load without this
* but you can still squeeze something from them even
* without the support - i.e. USSet. --pasky */
//| (1 << 0x1C); /* electrifiedrailway */
_ttdpatch_flags[2] = (_patches.build_on_slopes ? (1 << 0x0D) : 0) /* buildonslopes */
| (_patches.build_on_slopes ? (1 << 0x15) : 0) /* buildoncoasts */
| (1 << 0x16) /* canals */
| (1 << 0x17) /* newstartyear */
| (1 << 0x1A) /* newbridges */
| (_patches.wagon_speed_limits ? (1 << 0x1D) : 0); /* wagonspeedlimits */
_ttdpatch_flags[3] = (1 << 0x03) /* pathbasedsignalling */
| (1 << 0x0C) /* enhancemultiplayer */
| (1 << 0x0E) /* irregularstations */
| (1 << 0x10); /* autoreplace */
}
/**
* Unload unused sprite groups from the specified GRF file.
* Called after loading each GRF file.
* @param file GRF file
*/
static void ReleaseSpriteGroups(GRFFile *file)
{
int i;
// Bail out if no spritegroups were defined.
if (file->spritegroups == NULL)
return;
DEBUG(grf, 6)("ReleaseSpriteGroups: Releasing for `%s'.", file->filename);
for (i = 0; i < file->spritegroups_count; i++) {
if (file->spritegroups[i] != NULL)
UnloadSpriteGroup(&file->spritegroups[i]);
}
free(file->spritegroups);
file->spritegroups = NULL;
file->spritegroups_count = 0;
}
static void ResetCustomStations(void)
{
GRFFile *file;
uint i;
CargoID c;
for (file = _first_grffile; file != NULL; file = file->next) {
for (i = 0; i < lengthof(file->stations); i++) {
if (file->stations[i].grfid != file->grfid) continue;
// TODO: Release renderdata, platforms and layouts
// Release this stations sprite groups.
for (c = 0; c < NUM_GLOBAL_CID; c++) {
if (file->stations[i].spritegroup[c] != NULL)
UnloadSpriteGroup(&file->stations[i].spritegroup[c]);
}
}
}
}
/**
* Reset all NewGRF loaded data
* TODO
*/
static void ResetNewGRFData(void)
{
int i;
// 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) {
byte 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();
UnloadCustomEngineSprites();
UnloadCustomEngineNames();
// Reset price base data
ResetPriceBaseMultipliers();
// Reset station classes
ResetStationClasses();
ResetCustomStations();
// Add engine type to engine data. This is needed for the refit precalculation.
AddTypeToEngines();
}
static void InitNewGRFFile(const char* filename, int sprite_offset)
{
GRFFile *newfile;
newfile = GetFileByFilename(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(filename);
newfile->sprite_offset = sprite_offset;
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(const char* filename, 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 0, whilst action 3 is carried out during stage 1 (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 1 now, let's hope that won't get us into problems.
* --pasky */
uint32 action_mask = (stage == 0) ? 0x0001FF40 : 0x0001FFBF;
static const SpecialSpriteHandler handlers[] = {
/* 0x00 */ VehicleChangeInfo,
/* 0x01 */ NewSpriteSet,
/* 0x02 */ NewSpriteGroup,
/* 0x03 */ NewVehicle_SpriteGroupMapping,
/* 0x04 */ VehicleNewName,
/* 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 */ NULL // TODO implement
};
byte* buf = malloc(num);
byte action;
if (buf == NULL) error("DecodeSpecialSprite: Could not allocate memory");
FioReadBlock(buf, num);
action = buf[0];
if (action >= lengthof(handlers)) {
DEBUG(grf, 7) ("Skipping unknown action 0x%02X", action);
} else if (!HASBIT(action_mask, 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 (!(_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(filename, 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--;
}
// Release our sprite group references.
// Any groups that are referenced elsewhere will be cleaned up later.
// This removes groups that aren't used. (Perhaps skipped?)
ReleaseSpriteGroups(_cur_grffile);
}
void LoadNewGRF(uint load_index, uint file_index)
{
static bool initialized = false; // XXX yikes
uint stage;
if (!initialized) {
InitializeGRFSpecial();
initialized = true;
}
ResetNewGRFData();
/* Load newgrf sprites
* in each loading stage, (try to) open each file specified in the config
* and load information from it. */
_custom_sprites_base = load_index;
for (stage = 0; stage < 2; stage++) {
uint slot = file_index;
uint j;
_cur_stage = stage;
_cur_spriteid = load_index;
for (j = 0; j != lengthof(_newgrf_files) && _newgrf_files[j] != NULL; j++) {
if (!FiosCheckFileExists(_newgrf_files[j])) {
// TODO: usrerror()
error("NewGRF file missing: %s", _newgrf_files[j]);
}
if (stage == 0) InitNewGRFFile(_newgrf_files[j], _cur_spriteid);
LoadNewGRFFile(_newgrf_files[j], slot++, stage);
DEBUG(spritecache, 2) ("Currently %i sprites are loaded", load_index);
}
}
// Pre-calculate all refit masks after loading GRF files
CalculateRefitMasks();
}
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