src/road_map.h

   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
   8 /** @file road_map.h Map accessors for roads. */
   9
  10 #ifndef ROAD_MAP_H
  11 #define ROAD_MAP_H
  12
  13 #include "track_func.h"
  14 #include "depot_type.h"
  15 #include "rail_type.h"
  16 #include "road_func.h"
  17 #include "tile_map.h"
  18 #include "road_type.h"
  19
  20
  21 /** The different types of road tiles. */
  22 enum RoadTileType {
  23         ROAD_TILE_NORMAL,   ///< Normal road
  24         ROAD_TILE_CROSSING, ///< Level crossing
  25         ROAD_TILE_DEPOT,    ///< Depot (one entrance)
  26 };
  27
  28 /**
  29  * Test whether a tile can have road/tram types.
  30  * @param t Tile to query.
  31  * @return true if tile can be queried about road/tram types.
  32  */
  33 inline bool MayHaveRoad(Tile t)
  34 {
  35         switch (GetTileType(t)) {
  36                 case MP_ROAD:
  37                 case MP_STATION:
  38                 case MP_TUNNELBRIDGE:
  39                         return true;
  40
  41                 default:
  42                         return false;
  43         }
  44 }
  45
  46 /**
  47  * Get the type of the road tile.
  48  * @param t Tile to query.
  49  * @pre IsTileType(t, MP_ROAD)
  50  * @return The road tile type.
  51  */
  52 debug_inline static RoadTileType GetRoadTileType(Tile t)
  53 {
  54         assert(IsTileType(t, MP_ROAD));
  55         return (RoadTileType)GB(t.m5(), 6, 2);
  56 }
  57
  58 /**
  59  * Return whether a tile is a normal road.
  60  * @param t Tile to query.
  61  * @pre IsTileType(t, MP_ROAD)
  62  * @return True if normal road.
  63  */
  64 debug_inline static bool IsNormalRoad(Tile t)
  65 {
  66         return GetRoadTileType(t) == ROAD_TILE_NORMAL;
  67 }
  68
  69 /**
  70  * Return whether a tile is a normal road tile.
  71  * @param t Tile to query.
  72  * @return True if normal road tile.
  73  */
  74 debug_inline static bool IsNormalRoadTile(Tile t)
  75 {
  76         return IsTileType(t, MP_ROAD) && IsNormalRoad(t);
  77 }
  78
  79 /**
  80  * Return whether a tile is a level crossing.
  81  * @param t Tile to query.
  82  * @pre IsTileType(t, MP_ROAD)
  83  * @return True if level crossing.
  84  */
  85 inline bool IsLevelCrossing(Tile t)
  86 {
  87         return GetRoadTileType(t) == ROAD_TILE_CROSSING;
  88 }
  89
  90 /**
  91  * Return whether a tile is a level crossing tile.
  92  * @param t Tile to query.
  93  * @return True if level crossing tile.
  94  */
  95 inline bool IsLevelCrossingTile(Tile t)
  96 {
  97         return IsTileType(t, MP_ROAD) && IsLevelCrossing(t);
  98 }
  99
 100 /**
 101  * Return whether a tile is a road depot.
 102  * @param t Tile to query.
 103  * @pre IsTileType(t, MP_ROAD)
 104  * @return True if road depot.
 105  */
 106 debug_inline static bool IsRoadDepot(Tile t)
 107 {
 108         return GetRoadTileType(t) == ROAD_TILE_DEPOT;
 109 }
 110
 111 /**
 112  * Return whether a tile is a road depot tile.
 113  * @param t Tile to query.
 114  * @return True if road depot tile.
 115  */
 116 debug_inline static bool IsRoadDepotTile(Tile t)
 117 {
 118         return IsTileType(t, MP_ROAD) && IsRoadDepot(t);
 119 }
 120
 121 /**
 122  * Get the present road bits for a specific road type.
 123  * @param t  The tile to query.
 124  * @param rt Road type.
 125  * @pre IsNormalRoad(t)
 126  * @return The present road bits for the road type.
 127  */
 128 inline RoadBits GetRoadBits(Tile t, RoadTramType rtt)
 129 {
 130         assert(IsNormalRoad(t));
 131         if (rtt == RTT_TRAM) return (RoadBits)GB(t.m3(), 0, 4);
 132         return (RoadBits)GB(t.m5(), 0, 4);
 133 }
 134
 135 /**
 136  * Get all set RoadBits on the given tile
 137  *
 138  * @param tile The tile from which we want to get the RoadBits
 139  * @return all set RoadBits of the tile
 140  */
 141 inline RoadBits GetAllRoadBits(Tile tile)
 142 {
 143         return GetRoadBits(tile, RTT_ROAD) | GetRoadBits(tile, RTT_TRAM);
 144 }
 145
 146 /**
 147  * Set the present road bits for a specific road type.
 148  * @param t  The tile to change.
 149  * @param r  The new road bits.
 150  * @param rt Road type.
 151  * @pre IsNormalRoad(t)
 152  */
 153 inline void SetRoadBits(Tile t, RoadBits r, RoadTramType rtt)
 154 {
 155         assert(IsNormalRoad(t)); // XXX incomplete
 156         if (rtt == RTT_TRAM) {
 157                 SB(t.m3(), 0, 4, r);
 158         } else {
 159                 SB(t.m5(), 0, 4, r);
 160         }
 161 }
 162
 163 inline RoadType GetRoadTypeRoad(Tile t)
 164 {
 165         assert(MayHaveRoad(t));
 166         return (RoadType)GB(t.m4(), 0, 6);
 167 }
 168
 169 inline RoadType GetRoadTypeTram(Tile t)
 170 {
 171         assert(MayHaveRoad(t));
 172         return (RoadType)GB(t.m8(), 6, 6);
 173 }
 174
 175 inline RoadType GetRoadType(Tile t, RoadTramType rtt)
 176 {
 177         return (rtt == RTT_TRAM) ? GetRoadTypeTram(t) : GetRoadTypeRoad(t);
 178 }
 179
 180 /**
 181  * Get the present road types of a tile.
 182  * @param t The tile to query.
 183  * @return Present road types.
 184  */
 185 inline RoadTypes GetPresentRoadTypes(Tile t)
 186 {
 187         RoadTypes result = ROADTYPES_NONE;
 188         if (MayHaveRoad(t)) {
 189                 if (GetRoadTypeRoad(t) != INVALID_ROADTYPE) SetBit(result, GetRoadTypeRoad(t));
 190                 if (GetRoadTypeTram(t) != INVALID_ROADTYPE) SetBit(result, GetRoadTypeTram(t));
 191         }
 192         return result;
 193 }
 194
 195 inline bool HasRoadTypeRoad(Tile t)
 196 {
 197         return GetRoadTypeRoad(t) != INVALID_ROADTYPE;
 198 }
 199
 200 inline bool HasRoadTypeTram(Tile t)
 201 {
 202         return GetRoadTypeTram(t) != INVALID_ROADTYPE;
 203 }
 204
 205 /**
 206  * Check if a tile has a road or a tram road type.
 207  * @param t  The tile to check.
 208  * @param tram True to check tram, false to check road.
 209  * @return True if the tile has the specified road type.
 210  */
 211 inline bool HasTileRoadType(Tile t, RoadTramType rtt)
 212 {
 213         return GetRoadType(t, rtt) != INVALID_ROADTYPE;
 214 }
 215
 216 /**
 217  * Check if a tile has one of the specified road types.
 218  * @param t  The tile to check.
 219  * @param rts Allowed road types.
 220  * @return True if the tile has one of the specified road types.
 221  */
 222 inline bool HasTileAnyRoadType(Tile t, RoadTypes rts)
 223 {
 224         if (!MayHaveRoad(t)) return false;
 225         return (GetPresentRoadTypes(t) & rts);
 226 }
 227
 228 /**
 229  * Get the owner of a specific road type.
 230  * @param t  The tile to query.
 231  * @param rtt RoadTramType.
 232  * @return Owner of the given road type.
 233  */
 234 inline Owner GetRoadOwner(Tile t, RoadTramType rtt)
 235 {
 236         assert(MayHaveRoad(t));
 237         if (rtt == RTT_ROAD) return (Owner)GB(IsNormalRoadTile(t) ? t.m1() : t.m7(), 0, 5);
 238
 239         /* Trams don't need OWNER_TOWN, and remapping OWNER_NONE
 240          * to OWNER_TOWN makes it use one bit less */
 241         Owner o = (Owner)GB(t.m3(), 4, 4);
 242         return o == OWNER_TOWN ? OWNER_NONE : o;
 243 }
 244
 245 /**
 246  * Set the owner of a specific road type.
 247  * @param t  The tile to change.
 248  * @param rtt RoadTramType.
 249  * @param o  New owner of the given road type.
 250  */
 251 inline void SetRoadOwner(Tile t, RoadTramType rtt, Owner o)
 252 {
 253         if (rtt == RTT_ROAD) {
 254                 SB(IsNormalRoadTile(t) ? t.m1() : t.m7(), 0, 5, o);
 255         } else {
 256                 SB(t.m3(), 4, 4, o == OWNER_NONE ? OWNER_TOWN : o);
 257         }
 258 }
 259
 260 /**
 261  * Check if a specific road type is owned by an owner.
 262  * @param t  The tile to query.
 263  * @param tram True to check tram, false to check road.
 264  * @param o  Owner to compare with.
 265  * @pre HasTileRoadType(t, rt)
 266  * @return True if the road type is owned by the given owner.
 267  */
 268 inline bool IsRoadOwner(Tile t, RoadTramType rtt, Owner o)
 269 {
 270         assert(HasTileRoadType(t, rtt));
 271         return (GetRoadOwner(t, rtt) == o);
 272 }
 273
 274 /**
 275  * Checks if given tile has town owned road
 276  * @param t tile to check
 277  * @pre IsTileType(t, MP_ROAD)
 278  * @return true iff tile has road and the road is owned by a town
 279  */
 280 inline bool HasTownOwnedRoad(Tile t)
 281 {
 282         return HasTileRoadType(t, RTT_ROAD) && IsRoadOwner(t, RTT_ROAD, OWNER_TOWN);
 283 }
 284
 285 /**
 286  * Checks if a DisallowedRoadDirections is valid.
 287  *
 288  * @param wc The value to check
 289  * @return true if the given value is a valid DisallowedRoadDirections.
 290  */
 291 inline bool IsValidDisallowedRoadDirections(DisallowedRoadDirections drt)
 292 {
 293         return drt < DRD_END;
 294 }
 295
 296 /**
 297  * Gets the disallowed directions
 298  * @param t the tile to get the directions from
 299  * @return the disallowed directions
 300  */
 301 inline DisallowedRoadDirections GetDisallowedRoadDirections(Tile t)
 302 {
 303         assert(IsNormalRoad(t));
 304         return (DisallowedRoadDirections)GB(t.m5(), 4, 2);
 305 }
 306
 307 /**
 308  * Sets the disallowed directions
 309  * @param t   the tile to set the directions for
 310  * @param drd the disallowed directions
 311  */
 312 inline void SetDisallowedRoadDirections(Tile t, DisallowedRoadDirections drd)
 313 {
 314         assert(IsNormalRoad(t));
 315         assert(drd < DRD_END);
 316         SB(t.m5(), 4, 2, drd);
 317 }
 318
 319 /**
 320  * Get the road axis of a level crossing.
 321  * @param t The tile to query.
 322  * @pre IsLevelCrossing(t)
 323  * @return The axis of the road.
 324  */
 325 inline Axis GetCrossingRoadAxis(Tile t)
 326 {
 327         assert(IsLevelCrossing(t));
 328         return (Axis)GB(t.m5(), 0, 1);
 329 }
 330
 331 /**
 332  * Get the rail axis of a level crossing.
 333  * @param t The tile to query.
 334  * @pre IsLevelCrossing(t)
 335  * @return The axis of the rail.
 336  */
 337 inline Axis GetCrossingRailAxis(Tile t)
 338 {
 339         assert(IsLevelCrossing(t));
 340         return OtherAxis((Axis)GetCrossingRoadAxis(t));
 341 }
 342
 343 /**
 344  * Get the road bits of a level crossing.
 345  * @param tile The tile to query.
 346  * @return The present road bits.
 347  */
 348 inline RoadBits GetCrossingRoadBits(Tile tile)
 349 {
 350         return GetCrossingRoadAxis(tile) == AXIS_X ? ROAD_X : ROAD_Y;
 351 }
 352
 353 /**
 354  * Get the rail track of a level crossing.
 355  * @param tile The tile to query.
 356  * @return The rail track.
 357  */
 358 inline Track GetCrossingRailTrack(Tile tile)
 359 {
 360         return AxisToTrack(GetCrossingRailAxis(tile));
 361 }
 362
 363 /**
 364  * Get the rail track bits of a level crossing.
 365  * @param tile The tile to query.
 366  * @return The rail track bits.
 367  */
 368 inline TrackBits GetCrossingRailBits(Tile tile)
 369 {
 370         return AxisToTrackBits(GetCrossingRailAxis(tile));
 371 }
 372
 373
 374 /**
 375  * Get the reservation state of the rail crossing
 376  * @param t the crossing tile
 377  * @return reservation state
 378  * @pre IsLevelCrossingTile(t)
 379  */
 380 inline bool HasCrossingReservation(Tile t)
 381 {
 382         assert(IsLevelCrossingTile(t));
 383         return HasBit(t.m5(), 4);
 384 }
 385
 386 /**
 387  * Set the reservation state of the rail crossing
 388  * @note Works for both waypoints and rail depots
 389  * @param t the crossing tile
 390  * @param b the reservation state
 391  * @pre IsLevelCrossingTile(t)
 392  */
 393 inline void SetCrossingReservation(Tile t, bool b)
 394 {
 395         assert(IsLevelCrossingTile(t));
 396         AssignBit(t.m5(), 4, b);
 397 }
 398
 399 /**
 400  * Get the reserved track bits for a rail crossing
 401  * @param t the tile
 402  * @pre IsLevelCrossingTile(t)
 403  * @return reserved track bits
 404  */
 405 inline TrackBits GetCrossingReservationTrackBits(Tile t)
 406 {
 407         return HasCrossingReservation(t) ? GetCrossingRailBits(t) : TRACK_BIT_NONE;
 408 }
 409
 410 /**
 411  * Check if the level crossing is barred.
 412  * @param t The tile to query.
 413  * @pre IsLevelCrossing(t)
 414  * @return True if the level crossing is barred.
 415  */
 416 inline bool IsCrossingBarred(Tile t)
 417 {
 418         assert(IsLevelCrossing(t));
 419         return HasBit(t.m5(), 5);
 420 }
 421
 422 /**
 423  * Set the bar state of a level crossing.
 424  * @param t The tile to modify.
 425  * @param barred True if the crossing should be barred, false otherwise.
 426  * @pre IsLevelCrossing(t)
 427  */
 428 inline void SetCrossingBarred(Tile t, bool barred)
 429 {
 430         assert(IsLevelCrossing(t));
 431         AssignBit(t.m5(), 5, barred);
 432 }
 433
 434 /**
 435  * Unbar a level crossing.
 436  * @param t The tile to change.
 437  */
 438 inline void UnbarCrossing(Tile t)
 439 {
 440         SetCrossingBarred(t, false);
 441 }
 442
 443 /**
 444  * Bar a level crossing.
 445  * @param t The tile to change.
 446  */
 447 inline void BarCrossing(Tile t)
 448 {
 449         SetCrossingBarred(t, true);
 450 }
 451
 452 /** Check if a road tile has snow/desert. */
 453 #define IsOnDesert IsOnSnow
 454 /**
 455  * Check if a road tile has snow/desert.
 456  * @param t The tile to query.
 457  * @return True if the tile has snow/desert.
 458  */
 459 inline bool IsOnSnow(Tile t)
 460 {
 461         return HasBit(t.m7(), 5);
 462 }
 463
 464 /** Toggle the snow/desert state of a road tile. */
 465 #define ToggleDesert ToggleSnow
 466 /**
 467  * Toggle the snow/desert state of a road tile.
 468  * @param t The tile to change.
 469  */
 470 inline void ToggleSnow(Tile t)
 471 {
 472         ToggleBit(t.m7(), 5);
 473 }
 474
 475
 476 /** The possible road side decorations. */
 477 enum Roadside : uint8_t {
 478         ROADSIDE_BARREN           = 0, ///< Road on barren land
 479         ROADSIDE_GRASS            = 1, ///< Road on grass
 480         ROADSIDE_PAVED            = 2, ///< Road with paved sidewalks
 481         ROADSIDE_STREET_LIGHTS    = 3, ///< Road with street lights on paved sidewalks
 482         // 4 is unused for historical reasons
 483         ROADSIDE_TREES            = 5, ///< Road with trees on paved sidewalks
 484         ROADSIDE_GRASS_ROAD_WORKS = 6, ///< Road on grass with road works
 485         ROADSIDE_PAVED_ROAD_WORKS = 7, ///< Road with sidewalks and road works
 486 };
 487
 488 /**
 489  * Get the decorations of a road.
 490  * @param tile The tile to query.
 491  * @return The road decoration of the tile.
 492  */
 493 inline Roadside GetRoadside(Tile tile)
 494 {
 495         return (Roadside)GB(tile.m6(), 3, 3);
 496 }
 497
 498 /**
 499  * Set the decorations of a road.
 500  * @param tile The tile to change.
 501  * @param s    The new road decoration of the tile.
 502  */
 503 inline void SetRoadside(Tile tile, Roadside s)
 504 {
 505         SB(tile.m6(), 3, 3, s);
 506 }
 507
 508 /**
 509  * Check if a tile has road works.
 510  * @param t The tile to check.
 511  * @return True if the tile has road works in progress.
 512  */
 513 inline bool HasRoadWorks(Tile t)
 514 {
 515         return GetRoadside(t) >= ROADSIDE_GRASS_ROAD_WORKS;
 516 }
 517
 518 /**
 519  * Increase the progress counter of road works.
 520  * @param t The tile to modify.
 521  * @return True if the road works are in the last stage.
 522  */
 523 inline bool IncreaseRoadWorksCounter(Tile t)
 524 {
 525         AB(t.m7(), 0, 4, 1);
 526
 527         return GB(t.m7(), 0, 4) == 15;
 528 }
 529
 530 /**
 531  * Start road works on a tile.
 532  * @param t The tile to start the work on.
 533  * @pre !HasRoadWorks(t)
 534  */
 535 inline void StartRoadWorks(Tile t)
 536 {
 537         assert(!HasRoadWorks(t));
 538         /* Remove any trees or lamps in case or roadwork */
 539         switch (GetRoadside(t)) {
 540                 case ROADSIDE_BARREN:
 541                 case ROADSIDE_GRASS:  SetRoadside(t, ROADSIDE_GRASS_ROAD_WORKS); break;
 542                 default:              SetRoadside(t, ROADSIDE_PAVED_ROAD_WORKS); break;
 543         }
 544 }
 545
 546 /**
 547  * Terminate road works on a tile.
 548  * @param t Tile to stop the road works on.
 549  * @pre HasRoadWorks(t)
 550  */
 551 inline void TerminateRoadWorks(Tile t)
 552 {
 553         assert(HasRoadWorks(t));
 554         SetRoadside(t, (Roadside)(GetRoadside(t) - ROADSIDE_GRASS_ROAD_WORKS + ROADSIDE_GRASS));
 555         /* Stop the counter */
 556         SB(t.m7(), 0, 4, 0);
 557 }
 558
 559
 560 /**
 561  * Get the direction of the exit of a road depot.
 562  * @param t The tile to query.
 563  * @return Diagonal direction of the depot exit.
 564  */
 565 inline DiagDirection GetRoadDepotDirection(Tile t)
 566 {
 567         assert(IsRoadDepot(t));
 568         return (DiagDirection)GB(t.m5(), 0, 2);
 569 }
 570
 571
 572 RoadBits GetAnyRoadBits(Tile tile, RoadTramType rtt, bool straight_tunnel_bridge_entrance = false);
 573
 574 /**
 575  * Set the road road type of a tile.
 576  * @param t The tile to change.
 577  * @param rt The road type to set.
 578  */
 579 inline void SetRoadTypeRoad(Tile t, RoadType rt)
 580 {
 581         assert(MayHaveRoad(t));
 582         assert(rt == INVALID_ROADTYPE || RoadTypeIsRoad(rt));
 583         SB(t.m4(), 0, 6, rt);
 584 }
 585
 586 /**
 587  * Set the tram road type of a tile.
 588  * @param t The tile to change.
 589  * @param rt The road type to set.
 590  */
 591 inline void SetRoadTypeTram(Tile t, RoadType rt)
 592 {
 593         assert(MayHaveRoad(t));
 594         assert(rt == INVALID_ROADTYPE || RoadTypeIsTram(rt));
 595         SB(t.m8(), 6, 6, rt);
 596 }
 597
 598 /**
 599  * Set the road type of a tile.
 600  * @param t The tile to change.
 601  * @param rtt Set road or tram type.
 602  * @param rt The road type to set.
 603  */
 604 inline void SetRoadType(Tile t, RoadTramType rtt, RoadType rt)
 605 {
 606         if (rtt == RTT_TRAM) {
 607                 SetRoadTypeTram(t, rt);
 608         } else {
 609                 SetRoadTypeRoad(t, rt);
 610         }
 611 }
 612
 613 /**
 614  * Set the present road types of a tile.
 615  * @param t  The tile to change.
 616  * @param road_rt The road roadtype to set for the tile.
 617  * @param tram_rt The tram roadtype to set for the tile.
 618  */
 619 inline void SetRoadTypes(Tile t, RoadType road_rt, RoadType tram_rt)
 620 {
 621         SetRoadTypeRoad(t, road_rt);
 622         SetRoadTypeTram(t, tram_rt);
 623 }
 624
 625 /**
 626  * Make a normal road tile.
 627  * @param t       Tile to make a normal road.
 628  * @param bits    Road bits to set for all present road types.
 629  * @param road_rt The road roadtype to set for the tile.
 630  * @param tram_rt The tram roadtype to set for the tile.
 631  * @param town    Town ID if the road is a town-owned road.
 632  * @param road    New owner of road.
 633  * @param tram    New owner of tram tracks.
 634  */
 635 inline void MakeRoadNormal(Tile t, RoadBits bits, RoadType road_rt, RoadType tram_rt, TownID town, Owner road, Owner tram)
 636 {
 637         SetTileType(t, MP_ROAD);
 638         SetTileOwner(t, road);
 639         t.m2() = town;
 640         t.m3() = (tram_rt != INVALID_ROADTYPE ? bits : 0);
 641         t.m5() = (road_rt != INVALID_ROADTYPE ? bits : 0) | ROAD_TILE_NORMAL << 6;
 642         SB(t.m6(), 2, 4, 0);
 643         t.m7() = 0;
 644         SetRoadTypes(t, road_rt, tram_rt);
 645         SetRoadOwner(t, RTT_TRAM, tram);
 646 }
 647
 648 /**
 649  * Make a level crossing.
 650  * @param t       Tile to make a level crossing.
 651  * @param road    New owner of road.
 652  * @param tram    New owner of tram tracks.
 653  * @param rail    New owner of the rail track.
 654  * @param roaddir Axis of the road.
 655  * @param rat     New rail type.
 656  * @param road_rt The road roadtype to set for the tile.
 657  * @param tram_rt The tram roadtype to set for the tile.
 658  * @param town    Town ID if the road is a town-owned road.
 659  */
 660 inline void MakeRoadCrossing(Tile t, Owner road, Owner tram, Owner rail, Axis roaddir, RailType rat, RoadType road_rt, RoadType tram_rt, uint town)
 661 {
 662         SetTileType(t, MP_ROAD);
 663         SetTileOwner(t, rail);
 664         t.m2() = town;
 665         t.m3() = 0;
 666         t.m4() = INVALID_ROADTYPE;
 667         t.m5() = ROAD_TILE_CROSSING << 6 | roaddir;
 668         SB(t.m6(), 2, 4, 0);
 669         t.m7() = road;
 670         t.m8() = INVALID_ROADTYPE << 6 | rat;
 671         SetRoadTypes(t, road_rt, tram_rt);
 672         SetRoadOwner(t, RTT_TRAM, tram);
 673 }
 674
 675 /**
 676  * Sets the exit direction of a road depot.
 677  * @param tile Tile of the depot.
 678  * @param dir  Direction of the depot exit.
 679  */
 680 inline void SetRoadDepotExitDirection(Tile tile, DiagDirection dir)
 681 {
 682         assert(IsRoadDepotTile(tile));
 683         SB(tile.m5(), 0, 2, dir);
 684 }
 685
 686 /**
 687  * Make a road depot.
 688  * @param tile      Tile to make a depot on.
 689  * @param owner     New owner of the depot.
 690  * @param depot_id  New depot ID.
 691  * @param dir       Direction of the depot exit.
 692  * @param rt        Road type of the depot.
 693  */
 694 inline void MakeRoadDepot(Tile tile, Owner owner, DepotID depot_id, DiagDirection dir, RoadType rt)
 695 {
 696         SetTileType(tile, MP_ROAD);
 697         SetTileOwner(tile, owner);
 698         tile.m2() = depot_id;
 699         tile.m3() = 0;
 700         tile.m4() = INVALID_ROADTYPE;
 701         tile.m5() = ROAD_TILE_DEPOT << 6 | dir;
 702         SB(tile.m6(), 2, 4, 0);
 703         tile.m7() = owner;
 704         tile.m8() = INVALID_ROADTYPE << 6;
 705         SetRoadType(tile, GetRoadTramType(rt), rt);
 706         SetRoadOwner(tile, RTT_TRAM, owner);
 707 }
 708
 709 #endif /* ROAD_MAP_H */