OpenTTD Source: src/elrail.cpp Source File

OpenTTD Source 13.2.1

elrail.cpp
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1 /*
2 * This file is part of OpenTTD.
3 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
4 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
5 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
6 */
7
55 #include "stdafx.h"
56 #include "station_map.h"
57 #include "viewport_func.h"
58 #include "train.h"
59 #include "rail_gui.h"
60 #include "tunnelbridge_map.h"
61 #include "tunnelbridge.h"
62 #include "elrail_func.h"
63 #include "company_base.h"
64 #include "newgrf_railtype.h"
65
66 #include "table/elrail_data.h"
67
68 #include "safeguards.h"
69
75 static inline TLG GetTLG(TileIndex t)
76 {
77 return (TLG)((HasBit(TileX(t), 0) << 1) + HasBit(TileY(t), 0));
78 }
79
86 static TrackBits GetRailTrackBitsUniversal(TileIndex t, byte *override)
87 {
88 switch (GetTileType(t)) {
89 case MP_RAILWAY:
90 if (!HasRailCatenary(GetRailType(t))) return TRACK_BIT_NONE;
91 switch (GetRailTileType(t)) {
92 case RAIL_TILE_NORMAL: case RAIL_TILE_SIGNALS:
93 return GetTrackBits(t);
94 default:
95 return TRACK_BIT_NONE;
96 }
97 break;
98
99 case MP_TUNNELBRIDGE:
100 if (GetTunnelBridgeTransportType(t) != TRANSPORT_RAIL) return TRACK_BIT_NONE;
101 if (!HasRailCatenary(GetRailType(t))) return TRACK_BIT_NONE;
102 if (override != nullptr && (IsTunnel(t) || GetTunnelBridgeLength(t, GetOtherBridgeEnd(t)) > 0)) {
103 *override = 1 << GetTunnelBridgeDirection(t);
104 }
105 return DiagDirToDiagTrackBits(GetTunnelBridgeDirection(t));
106
107 case MP_ROAD:
108 if (!IsLevelCrossing(t)) return TRACK_BIT_NONE;
109 if (!HasRailCatenary(GetRailType(t))) return TRACK_BIT_NONE;
110 return GetCrossingRailBits(t);
111
112 case MP_STATION:
113 if (!HasStationRail(t)) return TRACK_BIT_NONE;
114 if (!HasRailCatenary(GetRailType(t))) return TRACK_BIT_NONE;
115 return TrackToTrackBits(GetRailStationTrack(t));
116
117 default:
118 return TRACK_BIT_NONE;
119 }
120 }
121
125 static TrackBits MaskWireBits(TileIndex t, TrackBits tracks)
126 {
127 /* Single track bits are never masked out. */
128 if (likely(HasAtMostOneBit(tracks))) return tracks;
129
130 if (!IsPlainRailTile(t)) return tracks;
131
132 TrackdirBits neighbour_tdb = TRACKDIR_BIT_NONE;
133 for (DiagDirection d = DIAGDIR_BEGIN; d < DIAGDIR_END; d++) {
134 /* If the neighbour tile is either not electrified or has no tracks that can be reached
135 * from this tile, mark all trackdirs that can be reached from the neighbour tile
136 * as needing no catenary. We make an exception for blocked station tiles with a matching
137 * axis that still display wires to preserve visual continuity. */
138 TileIndex next_tile = TileAddByDiagDir(t, d);
139 RailType rt = GetTileRailType(next_tile);
140 if (rt == INVALID_RAILTYPE || !HasRailCatenary(rt) ||
141 ((TrackStatusToTrackBits(GetTileTrackStatus(next_tile, TRANSPORT_RAIL, 0)) & DiagdirReachesTracks(d)) == TRACK_BIT_NONE &&
142 (!HasStationTileRail(next_tile) || GetRailStationAxis(next_tile) != DiagDirToAxis(d) || !CanStationTileHaveWires(next_tile)))) {
143 neighbour_tdb |= DiagdirReachesTrackdirs(ReverseDiagDir(d));
144 }
145 }
146
147 /* If the tracks from either a diagonal crossing or don't overlap, both
148 * trackdirs have to be marked to mask the corresponding track bit. Else
149 * one marked trackdir is enough the mask the track bit. */
150 TrackBits mask;
151 if (tracks == TRACK_BIT_CROSS || !TracksOverlap(tracks)) {
152 /* If the tracks form either a diagonal crossing or don't overlap, both
153 * trackdirs have to be marked to mask the corresponding track bit. */
154 mask = ~(TrackBits)((neighbour_tdb & (neighbour_tdb >> 8)) & TRACK_BIT_MASK);
155 /* If that results in no masked tracks and it is not a diagonal crossing,
156 * require only one marked trackdir to mask. */
157 if (tracks != TRACK_BIT_CROSS && (mask & TRACK_BIT_MASK) == TRACK_BIT_MASK) mask = ~TrackdirBitsToTrackBits(neighbour_tdb);
158 } else {
159 /* Require only one marked trackdir to mask the track. */
160 mask = ~TrackdirBitsToTrackBits(neighbour_tdb);
161 /* If that results in an empty set, require both trackdirs for diagonal track. */
162 if ((tracks & mask) == TRACK_BIT_NONE) {
163 if ((neighbour_tdb & TRACKDIR_BIT_X_NE) == 0 || (neighbour_tdb & TRACKDIR_BIT_X_SW) == 0) mask |= TRACK_BIT_X;
164 if ((neighbour_tdb & TRACKDIR_BIT_Y_NW) == 0 || (neighbour_tdb & TRACKDIR_BIT_Y_SE) == 0) mask |= TRACK_BIT_Y;
165 /* If that still is not enough, require both trackdirs for any track. */
166 if ((tracks & mask) == TRACK_BIT_NONE) mask = ~(TrackBits)((neighbour_tdb & (neighbour_tdb >> 8)) & TRACK_BIT_MASK);
167 }
168 }
169
170 /* Mask the tracks only if at least one track bit would remain. */
171 return (tracks & mask) != TRACK_BIT_NONE ? tracks & mask : tracks;
172 }
173
177 static inline SpriteID GetWireBase(TileIndex tile, TileContext context = TCX_NORMAL)
178 {
179 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
180 SpriteID wires = GetCustomRailSprite(rti, tile, RTSG_WIRES, context);
181 return wires == 0 ? SPR_WIRE_BASE : wires;
182 }
183
187 static inline SpriteID GetPylonBase(TileIndex tile, TileContext context = TCX_NORMAL)
188 {
189 const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(tile));
190 SpriteID pylons = GetCustomRailSprite(rti, tile, RTSG_PYLONS, context);
191 return pylons == 0 ? SPR_PYLON_BASE : pylons;
192 }
193
199 static void AdjustTileh(TileIndex tile, Slope *tileh)
200 {
201 if (IsTileType(tile, MP_TUNNELBRIDGE)) {
202 if (IsTunnel(tile)) {
203 *tileh = SLOPE_STEEP; // XXX - Hack to make tunnel entrances to always have a pylon
204 } else if (*tileh != SLOPE_FLAT) {
205 *tileh = SLOPE_FLAT;
206 } else {
207 *tileh = InclinedSlope(GetTunnelBridgeDirection(tile));
208 }
209 }
210 }
211
219 static int GetPCPElevation(TileIndex tile, DiagDirection PCPpos)
220 {
221 /* The elevation of the "pylon"-sprite should be the elevation at the PCP.
222 * PCPs are always on a tile edge.
223 *
224 * This position can be outside of the tile, i.e. ?_pcp_offset == TILE_SIZE > TILE_SIZE - 1.
225 * So we have to move it inside the tile, because if the neighboured tile has a foundation,
226 * that does not smoothly connect to the current tile, we will get a wrong elevation from GetSlopePixelZ().
227 *
228 * When we move the position inside the tile, we will get a wrong elevation if we have a slope.
229 * To catch all cases we round the Z position to the next (TILE_HEIGHT / 2).
230 * This will return the correct elevation for slopes and will also detect non-continuous elevation on edges.
231 *
232 * Also note that the result of GetSlopePixelZ() is very special on bridge-ramps.
233 */
234
235 int z = GetSlopePixelZ(TileX(tile) * TILE_SIZE + std::min<int8>(x_pcp_offsets[PCPpos], TILE_SIZE - 1),
236 TileY(tile) * TILE_SIZE + std::min<int8>(y_pcp_offsets[PCPpos], TILE_SIZE - 1));
237 return (z + 2) & ~3; // this means z = (z + TILE_HEIGHT / 4) / (TILE_HEIGHT / 2) * (TILE_HEIGHT / 2);
238 }
239
247 void DrawRailCatenaryOnTunnel(const TileInfo *ti)
248 {
249 /* xmin, ymin, xmax + 1, ymax + 1 of BB */
250 static const int _tunnel_wire_BB[4][4] = {
251 { 0, 1, 16, 15 }, // NE
252 { 1, 0, 15, 16 }, // SE
253 { 0, 1, 16, 15 }, // SW
254 { 1, 0, 15, 16 }, // NW
255 };
256
257 DiagDirection dir = GetTunnelBridgeDirection(ti->tile);
258
259 SpriteID wire_base = GetWireBase(ti->tile);
260
261 const SortableSpriteStruct *sss = &RailCatenarySpriteData_Tunnel[dir];
262 const int *BB_data = _tunnel_wire_BB[dir];
263 AddSortableSpriteToDraw(
264 wire_base + sss->image_offset, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
265 BB_data[2] - sss->x_offset, BB_data[3] - sss->y_offset, BB_Z_SEPARATOR - sss->z_offset + 1,
266 GetTilePixelZ(ti->tile) + sss->z_offset,
267 IsTransparencySet(TO_CATENARY),
268 BB_data[0] - sss->x_offset, BB_data[1] - sss->y_offset, BB_Z_SEPARATOR - sss->z_offset
269 );
270 }
271
276 static void DrawRailCatenaryRailway(const TileInfo *ti)
277 {
278 /* Pylons are placed on a tile edge, so we need to take into account
279 * the track configuration of 2 adjacent tiles. trackconfig[0] stores the
280 * current tile (home tile) while [1] holds the neighbour */
281 TrackBits trackconfig[TS_END];
282 TrackBits wireconfig[TS_END];
283 bool isflat[TS_END];
284 /* Note that ti->tileh has already been adjusted for Foundations */
285 Slope tileh[TS_END] = { ti->tileh, SLOPE_FLAT };
286
287 /* Half tile slopes coincide only with horizontal/vertical track.
288 * Faking a flat slope results in the correct sprites on positions. */
289 Corner halftile_corner = CORNER_INVALID;
290 if (IsHalftileSlope(tileh[TS_HOME])) {
291 halftile_corner = GetHalftileSlopeCorner(tileh[TS_HOME]);
292 tileh[TS_HOME] = SLOPE_FLAT;
293 }
294
295 TLG tlg = GetTLG(ti->tile);
296 byte PCPstatus = 0;
297 byte OverridePCP = 0;
298 byte PPPpreferred[DIAGDIR_END];
299 byte PPPallowed[DIAGDIR_END];
300
301 /* Find which rail bits are present, and select the override points.
302 * We don't draw a pylon:
303 * 1) INSIDE a tunnel (we wouldn't see it anyway)
304 * 2) on the "far" end of a bridge head (the one that connects to bridge middle),
305 * because that one is drawn on the bridge. Exception is for length 0 bridges
306 * which have no middle tiles */
307 trackconfig[TS_HOME] = GetRailTrackBitsUniversal(ti->tile, &OverridePCP);
308 wireconfig[TS_HOME] = MaskWireBits(ti->tile, trackconfig[TS_HOME]);
309 /* If a track bit is present that is not in the main direction, the track is level */
310 isflat[TS_HOME] = ((trackconfig[TS_HOME] & (TRACK_BIT_HORZ | TRACK_BIT_VERT)) != 0);
311
312 AdjustTileh(ti->tile, &tileh[TS_HOME]);
313
314 SpriteID pylon_normal = GetPylonBase(ti->tile);
315 SpriteID pylon_halftile = (halftile_corner != CORNER_INVALID) ? GetPylonBase(ti->tile, TCX_UPPER_HALFTILE) : pylon_normal;
316
317 for (DiagDirection i = DIAGDIR_BEGIN; i < DIAGDIR_END; i++) {
318 static const uint edge_corners[] = {
319 1 << CORNER_N | 1 << CORNER_E, // DIAGDIR_NE
320 1 << CORNER_S | 1 << CORNER_E, // DIAGDIR_SE
321 1 << CORNER_S | 1 << CORNER_W, // DIAGDIR_SW
322 1 << CORNER_N | 1 << CORNER_W, // DIAGDIR_NW
323 };
324 SpriteID pylon_base = (halftile_corner != CORNER_INVALID && HasBit(edge_corners[i], halftile_corner)) ? pylon_halftile : pylon_normal;
325 TileIndex neighbour = ti->tile + TileOffsByDiagDir(i);
326 int elevation = GetPCPElevation(ti->tile, i);
327
328 /* Here's one of the main headaches. GetTileSlope does not correct for possibly
329 * existing foundataions, so we do have to do that manually later on.*/
330 tileh[TS_NEIGHBOUR] = GetTileSlope(neighbour);
331 trackconfig[TS_NEIGHBOUR] = GetRailTrackBitsUniversal(neighbour, nullptr);
332 wireconfig[TS_NEIGHBOUR] = MaskWireBits(neighbour, trackconfig[TS_NEIGHBOUR]);
333 if (IsTunnelTile(neighbour) && i != GetTunnelBridgeDirection(neighbour)) wireconfig[TS_NEIGHBOUR] = trackconfig[TS_NEIGHBOUR] = TRACK_BIT_NONE;
334
335 /* Ignore station tiles that allow neither wires nor pylons. */
336 if (IsRailStationTile(neighbour) && !CanStationTileHavePylons(neighbour) && !CanStationTileHaveWires(neighbour)) wireconfig[TS_NEIGHBOUR] = trackconfig[TS_NEIGHBOUR] = TRACK_BIT_NONE;
337
338 /* If the neighboured tile does not smoothly connect to the current tile (because of a foundation),
339 * we have to draw all pillars on the current tile. */
340 if (elevation != GetPCPElevation(neighbour, ReverseDiagDir(i))) wireconfig[TS_NEIGHBOUR] = trackconfig[TS_NEIGHBOUR] = TRACK_BIT_NONE;
341
342 isflat[TS_NEIGHBOUR] = ((trackconfig[TS_NEIGHBOUR] & (TRACK_BIT_HORZ | TRACK_BIT_VERT)) != 0);
343
344 PPPpreferred[i] = 0xFF; // We start with preferring everything (end-of-line in any direction)
345 PPPallowed[i] = AllowedPPPonPCP[i];
346
347 /* We cycle through all the existing tracks at a PCP and see what
348 * PPPs we want to have, or may not have at all */
349 for (uint k = 0; k < NUM_TRACKS_AT_PCP; k++) {
350 /* Next to us, we have a bridge head, don't worry about that one, if it shows away from us */
351 if (TrackSourceTile[i][k] == TS_NEIGHBOUR &&
352 IsBridgeTile(neighbour) &&
353 GetTunnelBridgeDirection(neighbour) == ReverseDiagDir(i)) {
354 continue;
355 }
356
357 /* We check whether the track in question (k) is present in the tile
358 * (TrackSourceTile) */
359 DiagDirection PCPpos = i;
360 if (HasBit(wireconfig[TrackSourceTile[i][k]], TracksAtPCP[i][k])) {
361 /* track found, if track is in the neighbour tile, adjust the number
362 * of the PCP for preferred/allowed determination*/
363 PCPpos = (TrackSourceTile[i][k] == TS_HOME) ? i : ReverseDiagDir(i);
364 SetBit(PCPstatus, i); // This PCP is in use
365 PPPpreferred[i] &= PreferredPPPofTrackAtPCP[TracksAtPCP[i][k]][PCPpos];
366 }
367
368 if (HasBit(trackconfig[TrackSourceTile[i][k]], TracksAtPCP[i][k])) {
369 PPPallowed[i] &= ~DisallowedPPPofTrackAtPCP[TracksAtPCP[i][k]][PCPpos];
370 }
371 }
372
373 /* Deactivate all PPPs if PCP is not used */
374 if (!HasBit(PCPstatus, i)) {
375 PPPpreferred[i] = 0;
376 PPPallowed[i] = 0;
377 }
378
379 Foundation foundation = FOUNDATION_NONE;
380
381 /* Station and road crossings are always "flat", so adjust the tileh accordingly */
382 if (IsTileType(neighbour, MP_STATION) || IsTileType(neighbour, MP_ROAD)) tileh[TS_NEIGHBOUR] = SLOPE_FLAT;
383
384 /* Read the foundations if they are present, and adjust the tileh */
385 if (trackconfig[TS_NEIGHBOUR] != TRACK_BIT_NONE && IsTileType(neighbour, MP_RAILWAY) && HasRailCatenary(GetRailType(neighbour))) foundation = GetRailFoundation(tileh[TS_NEIGHBOUR], trackconfig[TS_NEIGHBOUR]);
386 if (IsBridgeTile(neighbour)) {
387 foundation = GetBridgeFoundation(tileh[TS_NEIGHBOUR], DiagDirToAxis(GetTunnelBridgeDirection(neighbour)));
388 }
389
390 ApplyFoundationToSlope(foundation, &tileh[TS_NEIGHBOUR]);
391
392 /* Half tile slopes coincide only with horizontal/vertical track.
393 * Faking a flat slope results in the correct sprites on positions. */
394 if (IsHalftileSlope(tileh[TS_NEIGHBOUR])) tileh[TS_NEIGHBOUR] = SLOPE_FLAT;
395
396 AdjustTileh(neighbour, &tileh[TS_NEIGHBOUR]);
397
398 /* If we have a straight (and level) track, we want a pylon only every 2 tiles
399 * Delete the PCP if this is the case.
400 * Level means that the slope is the same, or the track is flat */
401 if (tileh[TS_HOME] == tileh[TS_NEIGHBOUR] || (isflat[TS_HOME] && isflat[TS_NEIGHBOUR])) {
402 for (uint k = 0; k < NUM_IGNORE_GROUPS; k++) {
403 if (PPPpreferred[i] == IgnoredPCP[k][tlg][i]) ClrBit(PCPstatus, i);
404 }
405 }
406
407 /* Now decide where we draw our pylons. First try the preferred PPPs, but they may not exist.
408 * In that case, we try the any of the allowed ones. if they don't exist either, don't draw
409 * anything. Note that the preferred PPPs still contain the end-of-line markers.
410 * Remove those (simply by ANDing with allowed, since these markers are never allowed) */
411 if ((PPPallowed[i] & PPPpreferred[i]) != 0) PPPallowed[i] &= PPPpreferred[i];
412
413 if (IsBridgeAbove(ti->tile)) {
414 Track bridgetrack = GetBridgeAxis(ti->tile) == AXIS_X ? TRACK_X : TRACK_Y;
415 int height = GetBridgeHeight(GetNorthernBridgeEnd(ti->tile));
416
417 if ((height <= GetTileMaxZ(ti->tile) + 1) &&
418 (i == PCPpositions[bridgetrack][0] || i == PCPpositions[bridgetrack][1])) {
419 SetBit(OverridePCP, i);
420 }
421 }
422
423 if (PPPallowed[i] != 0 && HasBit(PCPstatus, i) && !HasBit(OverridePCP, i) &&
424 (!IsRailStationTile(ti->tile) || CanStationTileHavePylons(ti->tile))) {
425 for (Direction k = DIR_BEGIN; k < DIR_END; k++) {
426 byte temp = PPPorder[i][GetTLG(ti->tile)][k];
427
428 if (HasBit(PPPallowed[i], temp)) {
429 uint x = ti->x + x_pcp_offsets[i] + x_ppp_offsets[temp];
430 uint y = ti->y + y_pcp_offsets[i] + y_ppp_offsets[temp];
431
432 /* Don't build the pylon if it would be outside the tile */
433 if (!HasBit(OwnedPPPonPCP[i], temp)) {
434 /* We have a neighbour that will draw it, bail out */
435 if (trackconfig[TS_NEIGHBOUR] != TRACK_BIT_NONE) break;
436 continue; // No neighbour, go looking for a better position
437 }
438
439 AddSortableSpriteToDraw(pylon_base + pylon_sprites[temp], PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE,
440 elevation, IsTransparencySet(TO_CATENARY), -1, -1);
441
442 break; // We already have drawn a pylon, bail out
443 }
444 }
445 }
446 }
447
448 /* The wire above the tunnel is drawn together with the tunnel-roof (see DrawRailCatenaryOnTunnel()) */
449 if (IsTunnelTile(ti->tile)) return;
450
451 /* Don't draw a wire under a low bridge */
452 if (IsBridgeAbove(ti->tile) && !IsTransparencySet(TO_BRIDGES)) {
453 int height = GetBridgeHeight(GetNorthernBridgeEnd(ti->tile));
454
455 if (height <= GetTileMaxZ(ti->tile) + 1) return;
456 }
457
458 /* Don't draw a wire if the station tile does not want any */
459 if (IsRailStationTile(ti->tile) && !CanStationTileHaveWires(ti->tile)) return;
460
461 SpriteID wire_normal = GetWireBase(ti->tile);
462 SpriteID wire_halftile = (halftile_corner != CORNER_INVALID) ? GetWireBase(ti->tile, TCX_UPPER_HALFTILE) : wire_normal;
463 Track halftile_track;
464 switch (halftile_corner) {
465 case CORNER_W: halftile_track = TRACK_LEFT; break;
466 case CORNER_S: halftile_track = TRACK_LOWER; break;
467 case CORNER_E: halftile_track = TRACK_RIGHT; break;
468 case CORNER_N: halftile_track = TRACK_UPPER; break;
469 default: halftile_track = INVALID_TRACK; break;
470 }
471
472 /* Drawing of pylons is finished, now draw the wires */
473 for (Track t : SetTrackBitIterator(wireconfig[TS_HOME])) {
474 SpriteID wire_base = (t == halftile_track) ? wire_halftile : wire_normal;
475 byte PCPconfig = HasBit(PCPstatus, PCPpositions[t][0]) +
476 (HasBit(PCPstatus, PCPpositions[t][1]) << 1);
477
478 const SortableSpriteStruct *sss;
479 int tileh_selector = !(tileh[TS_HOME] % 3) * tileh[TS_HOME] / 3; // tileh for the slopes, 0 otherwise
480
481 assert(PCPconfig != 0); // We have a pylon on neither end of the wire, that doesn't work (since we have no sprites for that)
482 assert(!IsSteepSlope(tileh[TS_HOME]));
483 sss = &RailCatenarySpriteData[Wires[tileh_selector][t][PCPconfig]];
484
485 /*
486 * The "wire"-sprite position is inside the tile, i.e. 0 <= sss->?_offset < TILE_SIZE.
487 * Therefore it is safe to use GetSlopePixelZ() for the elevation.
488 * Also note that the result of GetSlopePixelZ() is very special for bridge-ramps, so we round the result up or
489 * down to the nearest full height change.
490 */
491 AddSortableSpriteToDraw(wire_base + sss->image_offset, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
492 sss->x_size, sss->y_size, sss->z_size, (GetSlopePixelZ(ti->x + sss->x_offset, ti->y + sss->y_offset) + 4) / 8 * 8 + sss->z_offset,
493 IsTransparencySet(TO_CATENARY));
494 }
495 }
496
504 void DrawRailCatenaryOnBridge(const TileInfo *ti)
505 {
506 TileIndex end = GetSouthernBridgeEnd(ti->tile);
507 TileIndex start = GetOtherBridgeEnd(end);
508
509 uint length = GetTunnelBridgeLength(start, end);
510 uint num = GetTunnelBridgeLength(ti->tile, start) + 1;
511 uint height;
512
513 const SortableSpriteStruct *sss;
514 Axis axis = GetBridgeAxis(ti->tile);
515 TLG tlg = GetTLG(ti->tile);
516
517 RailCatenarySprite offset = (RailCatenarySprite)(axis == AXIS_X ? 0 : WIRE_Y_FLAT_BOTH - WIRE_X_FLAT_BOTH);
518
519 if ((length % 2) && num == length) {
520 /* Draw the "short" wire on the southern end of the bridge
521 * only needed if the length of the bridge is odd */
522 sss = &RailCatenarySpriteData[WIRE_X_FLAT_BOTH + offset];
523 } else {
524 /* Draw "long" wires on all other tiles of the bridge (one pylon every two tiles) */
525 sss = &RailCatenarySpriteData[WIRE_X_FLAT_SW + (num % 2) + offset];
526 }
527
528 height = GetBridgePixelHeight(end);
529
530 SpriteID wire_base = GetWireBase(end, TCX_ON_BRIDGE);
531
532 AddSortableSpriteToDraw(wire_base + sss->image_offset, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
533 sss->x_size, sss->y_size, sss->z_size, height + sss->z_offset,
534 IsTransparencySet(TO_CATENARY)
535 );
536
537 SpriteID pylon_base = GetPylonBase(end, TCX_ON_BRIDGE);
538
539 /* Finished with wires, draw pylons
540 * every other tile needs a pylon on the northern end */
541 if (num % 2) {
542 DiagDirection PCPpos = (axis == AXIS_X ? DIAGDIR_NE : DIAGDIR_NW);
543 Direction PPPpos = (axis == AXIS_X ? DIR_NW : DIR_NE);
544 if (HasBit(tlg, (axis == AXIS_X ? 0 : 1))) PPPpos = ReverseDir(PPPpos);
545 uint x = ti->x + x_pcp_offsets[PCPpos] + x_ppp_offsets[PPPpos];
546 uint y = ti->y + y_pcp_offsets[PCPpos] + y_ppp_offsets[PPPpos];
547 AddSortableSpriteToDraw(pylon_base + pylon_sprites[PPPpos], PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE, height, IsTransparencySet(TO_CATENARY), -1, -1);
548 }
549
550 /* need a pylon on the southern end of the bridge */
551 if (GetTunnelBridgeLength(ti->tile, start) + 1 == length) {
552 DiagDirection PCPpos = (axis == AXIS_X ? DIAGDIR_SW : DIAGDIR_SE);
553 Direction PPPpos = (axis == AXIS_X ? DIR_NW : DIR_NE);
554 if (HasBit(tlg, (axis == AXIS_X ? 0 : 1))) PPPpos = ReverseDir(PPPpos);
555 uint x = ti->x + x_pcp_offsets[PCPpos] + x_ppp_offsets[PPPpos];
556 uint y = ti->y + y_pcp_offsets[PCPpos] + y_ppp_offsets[PPPpos];
557 AddSortableSpriteToDraw(pylon_base + pylon_sprites[PPPpos], PAL_NONE, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE, height, IsTransparencySet(TO_CATENARY), -1, -1);
558 }
559 }
560
566 void DrawRailCatenary(const TileInfo *ti)
567 {
568 switch (GetTileType(ti->tile)) {
569 case MP_RAILWAY:
570 if (IsRailDepot(ti->tile)) {
571 const SortableSpriteStruct *sss = &RailCatenarySpriteData_Depot[GetRailDepotDirection(ti->tile)];
572
573 SpriteID wire_base = GetWireBase(ti->tile);
574
575 /* This wire is not visible with the default depot sprites */
576 AddSortableSpriteToDraw(
577 wire_base + sss->image_offset, PAL_NONE, ti->x + sss->x_offset, ti->y + sss->y_offset,
578 sss->x_size, sss->y_size, sss->z_size,
579 GetTileMaxPixelZ(ti->tile) + sss->z_offset,
580 IsTransparencySet(TO_CATENARY)
581 );
582 return;
583 }
584 break;
585
586 case MP_TUNNELBRIDGE:
587 case MP_ROAD:
588 case MP_STATION:
589 break;
590
591 default: return;
592 }
593 DrawRailCatenaryRailway(ti);
594 }
595
596 void SettingsDisableElrail(int32 new_value)
597 {
598 bool disable = (new_value != 0);
599
600 /* pick appropriate railtype for elrail engines depending on setting */
601 const RailType new_railtype = disable ? RAILTYPE_RAIL : RAILTYPE_ELECTRIC;
602
603 /* walk through all train engines */
604 for (Engine *e : Engine::IterateType(VEH_TRAIN)) {
605 RailVehicleInfo *rv_info = &e->u.rail;
606 /* update railtype of engines intended to use elrail */
607 if (rv_info->intended_railtype == RAILTYPE_ELECTRIC) {
608 rv_info->railtype = new_railtype;
609 }
610 }
611
612 /* when disabling elrails, make sure that all existing trains can run on
613 * normal rail too */
614 if (disable) {
615 for (Train *t : Train::Iterate()) {
616 if (t->railtype == RAILTYPE_ELECTRIC) {
617 /* this railroad vehicle is now compatible only with elrail,
618 * so add there also normal rail compatibility */
619 t->compatible_railtypes |= RAILTYPES_RAIL;
620 t->railtype = RAILTYPE_RAIL;
621 SetBit(t->flags, VRF_EL_ENGINE_ALLOWED_NORMAL_RAIL);
622 }
623 }
624 }
625
626 /* Fix the total power and acceleration for trains */
627 for (Train *t : Train::Iterate()) {
628 /* power and acceleration is cached only for front engines */
629 if (t->IsFrontEngine()) {
630 t->ConsistChanged(CCF_TRACK);
631 }
632 }
633
634 for (Company *c : Company::Iterate()) c->avail_railtypes = GetCompanyRailtypes(c->index);
635
636 /* This resets the _last_built_railtype, which will be invalid for electric
637 * rails. It may have unintended consequences if that function is ever
638 * extended, though. */
639 ReinitGuiAfterToggleElrail(disable);
640 }
TRACK_BIT_MASK
@ TRACK_BIT_MASK
Bitmask for the first 6 bits.
Definition: track_type.h:54
IsTunnelTile
static bool IsTunnelTile(TileIndex t)
Is this a tunnel (entrance)?
Definition: tunnel_map.h:34
DIAGDIR_SE
@ DIAGDIR_SE
Southeast.
Definition: direction_type.h:80
tunnelbridge.h
TCX_UPPER_HALFTILE
@ TCX_UPPER_HALFTILE
Querying information about the upper part of a tile with halftile foundation.
Definition: newgrf_commons.h:26
GetTLG
static TLG GetTLG(TileIndex t)
Get the tile location group of a tile.
Definition: elrail.cpp:75
TO_CATENARY
@ TO_CATENARY
catenary
Definition: transparency.h:30
TRACK_BIT_NONE
@ TRACK_BIT_NONE
No track.
Definition: track_type.h:39
Engine::IterateType
static Pool::IterateWrapperFiltered< Engine, EngineTypeFilter > IterateType(VehicleType vt, size_t from=0)
Returns an iterable ensemble of all valid engines of the given type.
Definition: engine_base.h:173
GetOtherBridgeEnd
TileIndex GetOtherBridgeEnd(TileIndex tile)
Starting at one bridge end finds the other bridge end.
Definition: bridge_map.cpp:59
TileOffsByDiagDir
static TileIndexDiff TileOffsByDiagDir(DiagDirection dir)
Convert a DiagDirection to a TileIndexDiff.
Definition: map_func.h:341
Direction
Direction
Defines the 8 directions on the map.
Definition: direction_type.h:24
DIR_BEGIN
@ DIR_BEGIN
Used to iterate.
Definition: direction_type.h:25
HasAtMostOneBit
static bool HasAtMostOneBit(T value)
Test whether value has at most 1 bit set.
Definition: bitmath_func.hpp:286
GetTileMaxZ
int GetTileMaxZ(TileIndex t)
Get top height of the tile inside the map.
Definition: tile_map.cpp:141
GetBridgeFoundation
Foundation GetBridgeFoundation(Slope tileh, Axis axis)
Get the foundation for a bridge.
Definition: tunnelbridge_cmd.cpp:128
train.h
BB_Z_SEPARATOR
static const uint BB_Z_SEPARATOR
Separates the bridge/tunnel from the things under/above it.
Definition: viewport_type.h:85
TrackdirBits
TrackdirBits
Enumeration of bitmasks for the TrackDirs.
Definition: track_type.h:101
InclinedSlope
static Slope InclinedSlope(DiagDirection dir)
Returns the slope that is inclined in a specific direction.
Definition: slope_func.h:256
TileInfo::x
uint x
X position of the tile in unit coordinates.
Definition: tile_cmd.h:43
TileInfo
Tile information, used while rendering the tile.
Definition: tile_cmd.h:42
company_base.h
IsTransparencySet
static bool IsTransparencySet(TransparencyOption to)
Check if the transparency option bit is set and if we aren't in the game menu (there's never transpar...
Definition: transparency.h:48
tunnelbridge_map.h
Axis
Axis
Allow incrementing of DiagDirDiff variables.
Definition: direction_type.h:125
elrail_func.h
DIR_NW
@ DIR_NW
Northwest.
Definition: direction_type.h:33
TRACK_LOWER
@ TRACK_LOWER
Track in the lower corner of the tile (south)
Definition: track_type.h:24
DiagDirToAxis
static Axis DiagDirToAxis(DiagDirection d)
Convert a DiagDirection to the axis.
Definition: direction_func.h:214
RTSG_PYLONS
@ RTSG_PYLONS
Catenary pylons.
Definition: rail.h:52
RAIL_TILE_SIGNALS
@ RAIL_TILE_SIGNALS
Normal rail tile with signals.
Definition: rail_map.h:25
DIAGDIR_END
@ DIAGDIR_END
Used for iterations.
Definition: direction_type.h:83
GetRailStationTrack
static Track GetRailStationTrack(TileIndex t)
Get the rail track of a rail station tile.
Definition: station_map.h:349
TRACK_X
@ TRACK_X
Track along the x-axis (north-east to south-west)
Definition: track_type.h:21
GetBridgeHeight
int GetBridgeHeight(TileIndex t)
Get the height ('z') of a bridge.
Definition: bridge_map.cpp:70
DrawRailCatenaryRailway
static void DrawRailCatenaryRailway(const TileInfo *ti)
Draws wires and, if required, pylons on a given tile.
Definition: elrail.cpp:276
HasBit
static bool HasBit(const T x, const uint8 y)
Checks if a bit in a value is set.
Definition: bitmath_func.hpp:103
IsHalftileSlope
static bool IsHalftileSlope(Slope s)
Checks for non-continuous slope on halftile foundations.
Definition: slope_func.h:47
RailtypeInfo
This struct contains all the info that is needed to draw and construct tracks.
Definition: rail.h:124
ClrBit
static T ClrBit(T &x, const uint8 y)
Clears a bit in a variable.
Definition: bitmath_func.hpp:151
TileIndex
The index/ID of a Tile.
Definition: tile_type.h:85
TracksOverlap
static bool TracksOverlap(TrackBits bits)
Checks if the given tracks overlap, ie form a crossing.
Definition: track_func.h:644
MP_RAILWAY
@ MP_RAILWAY
A railway.
Definition: tile_type.h:49
RailCatenarySprite
RailCatenarySprite
Refers to a certain element of the catenary.
Definition: elrail_data.h:422
BB_HEIGHT_UNDER_BRIDGE
static const uint BB_HEIGHT_UNDER_BRIDGE
Some values for constructing bounding boxes (BB).
Definition: viewport_type.h:84
TILE_SIZE
static const uint TILE_SIZE
Tile size in world coordinates.
Definition: tile_type.h:15
VRF_EL_ENGINE_ALLOWED_NORMAL_RAIL
@ VRF_EL_ENGINE_ALLOWED_NORMAL_RAIL
Electric train engine is allowed to run on normal rail. *‍/.
Definition: train.h:30
GetTrackBits
static TrackBits GetTrackBits(TileIndex tile)
Gets the track bits of the given tile.
Definition: rail_map.h:136
TileInfo::y
uint y
Y position of the tile in unit coordinates.
Definition: tile_cmd.h:44
DrawRailCatenaryOnBridge
void DrawRailCatenaryOnBridge(const TileInfo *ti)
Draws wires on a tunnel tile.
Definition: elrail.cpp:504
TileY
static uint TileY(TileIndex tile)
Get the Y component of a tile.
Definition: map_func.h:215
DIAGDIR_NW
@ DIAGDIR_NW
Northwest.
Definition: direction_type.h:82
Engine
Definition: engine_base.h:36
MP_ROAD
@ MP_ROAD
A tile with road (or tram tracks)
Definition: tile_type.h:50
IsRailDepot
static bool IsRailDepot(TileIndex t)
Is this rail tile a rail depot?
Definition: rail_map.h:95
TRACK_RIGHT
@ TRACK_RIGHT
Track in the right corner of the tile (east)
Definition: track_type.h:26
Foundation
Foundation
Enumeration for Foundations.
Definition: slope_type.h:93
IsLevelCrossing
static bool IsLevelCrossing(TileIndex t)
Return whether a tile is a level crossing.
Definition: road_map.h:85
GetRailDepotDirection
static DiagDirection GetRailDepotDirection(TileIndex t)
Returns the direction the depot is facing to.
Definition: rail_map.h:171
TrackToTrackBits
static TrackBits TrackToTrackBits(Track track)
Maps a Track to the corresponding TrackBits value.
Definition: track_func.h:76
TileX
static uint TileX(TileIndex tile)
Get the X component of a tile.
Definition: map_func.h:205
GetTileTrackStatus
TrackStatus GetTileTrackStatus(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side)
Returns information about trackdirs and signal states.
Definition: landscape.cpp:601
RAILTYPE_ELECTRIC
@ RAILTYPE_ELECTRIC
Electric rails.
Definition: rail_type.h:30
TileInfo::tileh
Slope tileh
Slope of the tile.
Definition: tile_cmd.h:45
SpriteID
uint32 SpriteID
The number of a sprite, without mapping bits and colourtables.
Definition: gfx_type.h:17
TRACK_BIT_CROSS
@ TRACK_BIT_CROSS
X-Y-axis cross.
Definition: track_type.h:46
GetRailTypeInfo
static const RailtypeInfo * GetRailTypeInfo(RailType railtype)
Returns a pointer to the Railtype information for a given railtype.
Definition: rail.h:304
TO_BRIDGES
@ TO_BRIDGES
bridges
Definition: transparency.h:28
Slope
Slope
Enumeration for the slope-type.
Definition: slope_type.h:48
GetRailTrackBitsUniversal
static TrackBits GetRailTrackBitsUniversal(TileIndex t, byte *override)
Finds which Electrified Rail Bits are present on a given tile.
Definition: elrail.cpp:86
TRACK_BIT_VERT
@ TRACK_BIT_VERT
Left and right track.
Definition: track_type.h:48
DIAGDIR_SW
@ DIAGDIR_SW
Southwest.
Definition: direction_type.h:81
RailVehicleInfo
Information about a rail vehicle.
Definition: engine_type.h:42
TRANSPORT_RAIL
@ TRANSPORT_RAIL
Transport by train.
Definition: transport_type.h:27
TRACKDIR_BIT_X_NE
@ TRACKDIR_BIT_X_NE
Track x-axis, direction north-east.
Definition: track_type.h:103
RailType
RailType
Enumeration for all possible railtypes.
Definition: rail_type.h:27
IsBridgeTile
static bool IsBridgeTile(TileIndex t)
checks if there is a bridge on this tile
Definition: bridge_map.h:35
IsSteepSlope
static bool IsSteepSlope(Slope s)
Checks if a slope is steep.
Definition: slope_func.h:36
TRACK_Y
@ TRACK_Y
Track along the y-axis (north-west to south-east)
Definition: track_type.h:22
SetBitIterator
Iterable ensemble of each set bit in a value.
Definition: bitmath_func.hpp:329
HasStationRail
static bool HasStationRail(TileIndex t)
Has this station tile a rail? In other words, is this station tile a rail station or rail waypoint?
Definition: station_map.h:135
GetRailTileType
static RailTileType GetRailTileType(TileIndex t)
Returns the RailTileType (normal with or without signals, waypoint or depot).
Definition: rail_map.h:36
TrackStatusToTrackBits
static TrackBits TrackStatusToTrackBits(TrackStatus ts)
Returns the present-track-information of a TrackStatus.
Definition: track_func.h:362
Corner
Corner
Enumeration of tile corners.
Definition: slope_type.h:22
TRACK_UPPER
@ TRACK_UPPER
Track in the upper corner of the tile (north)
Definition: track_type.h:23
GetNorthernBridgeEnd
TileIndex GetNorthernBridgeEnd(TileIndex t)
Finds the northern end of a bridge starting at a middle tile.
Definition: bridge_map.cpp:39
DIR_NE
@ DIR_NE
Northeast.
Definition: direction_type.h:27
RAILTYPES_RAIL
@ RAILTYPES_RAIL
Non-electrified rails.
Definition: rail_type.h:48
AdjustTileh
static void AdjustTileh(TileIndex tile, Slope *tileh)
Corrects the tileh for certain tile types.
Definition: elrail.cpp:199
TileContext
TileContext
Context for tile accesses.
Definition: newgrf_commons.h:24
TRACK_BIT_X
@ TRACK_BIT_X
X-axis track.
Definition: track_type.h:40
HasStationTileRail
static bool HasStationTileRail(TileIndex t)
Has this station tile a rail? In other words, is this station tile a rail station or rail waypoint?
Definition: station_map.h:146
DiagdirReachesTracks
static TrackBits DiagdirReachesTracks(DiagDirection diagdir)
Returns all tracks that can be reached when entering a tile from a given (diagonal) direction.
Definition: track_func.h:572
safeguards.h
Train
'Train' is either a loco or a wagon.
Definition: train.h:89
GetTileSlope
Slope GetTileSlope(TileIndex tile, int *h)
Return the slope of a given tile inside the map.
Definition: tile_map.cpp:59
ReverseDiagDir
static DiagDirection ReverseDiagDir(DiagDirection d)
Returns the reverse direction of the given DiagDirection.
Definition: direction_func.h:118
TileAddByDiagDir
static TileIndex TileAddByDiagDir(TileIndex tile, DiagDirection dir)
Adds a DiagDir to a tile.
Definition: map_func.h:382
CanStationTileHaveWires
bool CanStationTileHaveWires(TileIndex tile)
Check if a rail station tile shall have wires when electrified.
Definition: newgrf_station.cpp:884
TRACK_LEFT
@ TRACK_LEFT
Track in the left corner of the tile (west)
Definition: track_type.h:25
TRACKDIR_BIT_Y_SE
@ TRACKDIR_BIT_Y_SE
Track y-axis, direction south-east.
Definition: track_type.h:104
TCX_NORMAL
@ TCX_NORMAL
Nothing special.
Definition: newgrf_commons.h:25
GetHalftileSlopeCorner
static Corner GetHalftileSlopeCorner(Slope s)
Returns the leveled halftile of a halftile slope.
Definition: slope_func.h:148
MP_TUNNELBRIDGE
@ MP_TUNNELBRIDGE
Tunnel entry/exit and bridge heads.
Definition: tile_type.h:57
FOUNDATION_NONE
@ FOUNDATION_NONE
The tile has no foundation, the slope remains unchanged.
Definition: slope_type.h:94
GetSouthernBridgeEnd
TileIndex GetSouthernBridgeEnd(TileIndex t)
Finds the southern end of a bridge starting at a middle tile.
Definition: bridge_map.cpp:49
DiagDirection
DiagDirection
Enumeration for diagonal directions.
Definition: direction_type.h:77
IsRailStationTile
static bool IsRailStationTile(TileIndex t)
Is this tile a station tile and a rail station?
Definition: station_map.h:102
stdafx.h
viewport_func.h
IsTileType
static bool IsTileType(TileIndex tile, TileType type)
Checks if a tile is a given tiletype.
Definition: tile_map.h:150
GetTunnelBridgeDirection
static DiagDirection GetTunnelBridgeDirection(TileIndex t)
Get the direction pointing to the other end.
Definition: tunnelbridge_map.h:26
AddSortableSpriteToDraw
void AddSortableSpriteToDraw(SpriteID image, PaletteID pal, int x, int y, int w, int h, int dz, int z, bool transparent, int bb_offset_x, int bb_offset_y, int bb_offset_z, const SubSprite *sub)
Draw a (transparent) sprite at given coordinates with a given bounding box.
Definition: viewport.cpp:667
GetBridgeAxis
static Axis GetBridgeAxis(TileIndex t)
Get the axis of the bridge that goes over the tile.
Definition: bridge_map.h:68
MaskWireBits
static TrackBits MaskWireBits(TileIndex t, TrackBits tracks)
Masks out track bits when neighbouring tiles are unelectrified.
Definition: elrail.cpp:125
DiagdirReachesTrackdirs
static TrackdirBits DiagdirReachesTrackdirs(DiagDirection diagdir)
Returns all trackdirs that can be reached when entering a tile from a given (diagonal) direction.
Definition: track_func.h:554
RAILTYPE_RAIL
@ RAILTYPE_RAIL
Standard non-electric rails.
Definition: rail_type.h:29
ReverseDir
static Direction ReverseDir(Direction d)
Return the reverse of a direction.
Definition: direction_func.h:54
TRACK_BIT_HORZ
@ TRACK_BIT_HORZ
Upper and lower track.
Definition: track_type.h:47
rail_gui.h
TRACKDIR_BIT_NONE
@ TRACKDIR_BIT_NONE
No track build.
Definition: track_type.h:102
GetPylonBase
static SpriteID GetPylonBase(TileIndex tile, TileContext context=TCX_NORMAL)
Get the base pylon sprite to use.
Definition: elrail.cpp:187
GetCustomRailSprite
SpriteID GetCustomRailSprite(const RailtypeInfo *rti, TileIndex tile, RailTypeSpriteGroup rtsg, TileContext context, uint *num_results)
Get the sprite to draw for the given tile.
Definition: newgrf_railtype.cpp:95
RTSG_WIRES
@ RTSG_WIRES
Catenary wires.
Definition: rail.h:51
Pool::PoolItem<&_company_pool >::Iterate
static Pool::IterateWrapper< Titem > Iterate(size_t from=0)
Returns an iterable ensemble of all valid Titem.
Definition: pool_type.hpp:386
GetTilePixelZ
static int GetTilePixelZ(TileIndex tile)
Get bottom height of the tile.
Definition: tile_map.h:294
DIR_END
@ DIR_END
Used to iterate.
Definition: direction_type.h:34
GetRailStationAxis
static Axis GetRailStationAxis(TileIndex t)
Get the rail direction of a rail station.
Definition: station_map.h:337
GetRailFoundation
Foundation GetRailFoundation(Slope tileh, TrackBits bits)
Checks if a track combination is valid on a specific slope and returns the needed foundation.
Definition: rail_cmd.cpp:322
TRACKDIR_BIT_Y_NW
@ TRACKDIR_BIT_Y_NW
Track y-axis, direction north-west.
Definition: track_type.h:111
IsTunnel
static bool IsTunnel(TileIndex t)
Is this a tunnel (entrance)?
Definition: tunnel_map.h:23
TCX_ON_BRIDGE
@ TCX_ON_BRIDGE
Querying information about stuff on the bridge (via some bridgehead).
Definition: newgrf_commons.h:27
GetPCPElevation
static int GetPCPElevation(TileIndex tile, DiagDirection PCPpos)
Returns the Z position of a Pylon Control Point.
Definition: elrail.cpp:219
GetCompanyRailtypes
RailTypes GetCompanyRailtypes(CompanyID company, bool introduces)
Get the rail types the given company can build.
Definition: rail.cpp:251
GetRailType
static RailType GetRailType(TileIndex t)
Gets the rail type of the given tile.
Definition: rail_map.h:115
MP_STATION
@ MP_STATION
A tile of a station.
Definition: tile_type.h:53
RAIL_TILE_NORMAL
@ RAIL_TILE_NORMAL
Normal rail tile without signals.
Definition: rail_map.h:24
GetWireBase
static SpriteID GetWireBase(TileIndex tile, TileContext context=TCX_NORMAL)
Get the base wire sprite to use.
Definition: elrail.cpp:177
DIAGDIR_BEGIN
@ DIAGDIR_BEGIN
Used for iterations.
Definition: direction_type.h:78
PreferredPPPofTrackAtPCP
static const byte PreferredPPPofTrackAtPCP[TRACK_END][DIAGDIR_END]
Preferred points of each trackbit.
Definition: elrail_data.h:79
RailVehicleInfo::railtype
RailType railtype
Railtype, mangled if elrail is disabled.
Definition: engine_type.h:46
GetTileMaxPixelZ
static int GetTileMaxPixelZ(TileIndex tile)
Get top height of the tile.
Definition: tile_map.h:304
CanStationTileHavePylons
bool CanStationTileHavePylons(TileIndex tile)
Check if a rail station tile shall have pylons when electrified.
Definition: newgrf_station.cpp:870
SpecializedVehicle< Train, Type >::Iterate
static Pool::IterateWrapper< Train > Iterate(size_t from=0)
Returns an iterable ensemble of all valid vehicles of type T.
Definition: vehicle_base.h:1252
AXIS_X
@ AXIS_X
The X axis.
Definition: direction_type.h:126
RailVehicleInfo::intended_railtype
RailType intended_railtype
Intended railtype, regardless of elrail being enabled or disabled.
Definition: engine_type.h:47
DrawRailCatenaryOnTunnel
void DrawRailCatenaryOnTunnel(const TileInfo *ti)
Draws wires on a tunnel tile.
Definition: elrail.cpp:247
TrackBits
TrackBits
Bitfield corresponding to Track.
Definition: track_type.h:38
station_map.h
GetTunnelBridgeLength
static uint GetTunnelBridgeLength(TileIndex begin, TileIndex end)
Calculates the length of a tunnel or a bridge (without end tiles)
Definition: tunnelbridge.h:25
AllowedPPPonPCP
static const byte AllowedPPPonPCP[DIAGDIR_END]
Which PPPs are possible at all on a given PCP.
Definition: elrail_data.h:43
SetBit
static T SetBit(T &x, const uint8 y)
Set a bit in a variable.
Definition: bitmath_func.hpp:121
DiagDirToDiagTrackBits
static TrackBits DiagDirToDiagTrackBits(DiagDirection diagdir)
Maps a (4-way) direction to the diagonal track bits incidating with that diagdir.
Definition: track_func.h:523
GetBridgePixelHeight
static int GetBridgePixelHeight(TileIndex tile)
Get the height ('z') of a bridge in pixels.
Definition: bridge_map.h:84
elrail_data.h
IsPlainRailTile
static bool IsPlainRailTile(TileIndex t)
Checks whether the tile is a rail tile or rail tile with signals.
Definition: rail_map.h:60
DrawRailCatenary
void DrawRailCatenary(const TileInfo *ti)
Draws overhead wires and pylons for electric railways.
Definition: elrail.cpp:566
TLG
TLG
Tile Location group.
Definition: elrail_data.h:20
DisallowedPPPofTrackAtPCP
static const byte DisallowedPPPofTrackAtPCP[TRACK_END][DIAGDIR_END]
Which pylons can definitely NOT be built.
Definition: elrail_data.h:197
IgnoredPCP
static const byte IgnoredPCP[NUM_IGNORE_GROUPS][TLG_END][DIAGDIR_END]
In case we have a straight line, we place pylon only every two tiles, so there are certain tiles whic...
Definition: elrail_data.h:122
GetTileRailType
RailType GetTileRailType(TileIndex tile)
Return the rail type of tile, or INVALID_RAILTYPE if this is no rail tile.
Definition: rail.cpp:155
PCPpositions
static const DiagDirection PCPpositions[TRACK_END][2]
Maps a track bit onto two PCP positions.
Definition: elrail_data.h:63
TRACKDIR_BIT_X_SW
@ TRACKDIR_BIT_X_SW
Track x-axis, direction south-west.
Definition: track_type.h:110
TRACK_BIT_Y
@ TRACK_BIT_Y
Y-axis track.
Definition: track_type.h:41
TileInfo::tile
TileIndex tile
Tile index.
Definition: tile_cmd.h:46
CCF_TRACK
@ CCF_TRACK
Valid changes while vehicle is driving, and possibly changing tracks.
Definition: train.h:48
GetTileType
static TileType GetTileType(TileIndex tile)
Get the tiletype of a given tile.
Definition: tile_map.h:96
VEH_TRAIN
@ VEH_TRAIN
Train vehicle type.
Definition: vehicle_type.h:24
HasRailCatenary
static bool HasRailCatenary(RailType rt)
Test if a rail type has catenary.
Definition: elrail_func.h:21
SLOPE_FLAT
@ SLOPE_FLAT
a flat tile
Definition: slope_type.h:49
Track
Track
These are used to specify a single track.
Definition: track_type.h:19
ApplyFoundationToSlope
uint ApplyFoundationToSlope(Foundation f, Slope *s)
Applies a foundation to a slope.
Definition: landscape.cpp:166
GetTunnelBridgeTransportType
static TransportType GetTunnelBridgeTransportType(TileIndex t)
Tunnel: Get the transport type of the tunnel (road or rail) Bridge: Get the transport type of the bri...
Definition: tunnelbridge_map.h:39
TrackdirBitsToTrackBits
static TrackBits TrackdirBitsToTrackBits(TrackdirBits bits)
Discards all directional information from a TrackdirBits value.
Definition: track_func.h:307
GetCrossingRailBits
static TrackBits GetCrossingRailBits(TileIndex tile)
Get the rail track bits of a level crossing.
Definition: road_map.h:368
DIAGDIR_NE
@ DIAGDIR_NE
Northeast, upper right on your monitor.
Definition: direction_type.h:79
Company
Definition: company_base.h:117
SLOPE_STEEP
@ SLOPE_STEEP
indicates the slope is steep
Definition: slope_type.h:54
newgrf_railtype.h
SettingsDisableElrail
void SettingsDisableElrail(int32 new_value)
_settings_game.disable_elrail callback
Definition: elrail.cpp:596
OwnedPPPonPCP
static const byte OwnedPPPonPCP[DIAGDIR_END]
Which of the PPPs are inside the tile.
Definition: elrail_data.h:55
SortableSpriteStruct
Definition: elrail_data.h:317
IsBridgeAbove
static bool IsBridgeAbove(TileIndex t)
checks if a bridge is set above the ground of this tile
Definition: bridge_map.h:45
ReinitGuiAfterToggleElrail
void ReinitGuiAfterToggleElrail(bool disable)
Re-initialize rail-build toolbar after toggling support for electric trains.
Definition: rail_gui.cpp:2143
INVALID_RAILTYPE
@ INVALID_RAILTYPE
Flag for invalid railtype.
Definition: rail_type.h:34
INVALID_TRACK
@ INVALID_TRACK
Flag for an invalid track.
Definition: track_type.h:28