diff --git a/src/rail_cmd.c b/src/rail_cmd.c deleted file mode 100644 --- a/src/rail_cmd.c +++ /dev/null @@ -1,1985 +0,0 @@ -/* $Id$ */ - -#include "stdafx.h" -#include "openttd.h" -#include "bridge_map.h" -#include "debug.h" -#include "functions.h" -#include "rail_map.h" -#include "road_map.h" -#include "table/sprites.h" -#include "table/strings.h" -#include "map.h" -#include "tile.h" -#include "town_map.h" -#include "tunnel_map.h" -#include "vehicle.h" -#include "viewport.h" -#include "command.h" -#include "pathfind.h" -#include "engine.h" -#include "town.h" -#include "sound.h" -#include "station.h" -#include "sprite.h" -#include "depot.h" -#include "waypoint.h" -#include "window.h" -#include "rail.h" -#include "railtypes.h" // include table for railtypes -#include "newgrf.h" -#include "yapf/yapf.h" -#include "newgrf_callbacks.h" -#include "newgrf_station.h" -#include "train.h" - -const byte _track_sloped_sprites[14] = { - 14, 15, 22, 13, - 0, 21, 17, 12, - 23, 0, 18, 20, - 19, 16 -}; - - -/* 4 - * --------- - * |\ /| - * | \ 1/ | - * | \ / | - * | \ / | - * 16| \ |32 - * | / \2 | - * | / \ | - * | / \ | - * |/ \| - * --------- - * 8 - */ - - - -/* MAP2 byte: abcd???? => Signal On? Same coding as map3lo - * MAP3LO byte: abcd???? => Signal Exists? - * a and b are for diagonals, upper and left, - * one for each direction. (ie a == NE->SW, b == - * SW->NE, or v.v., I don't know. b and c are - * similar for lower and right. - * MAP2 byte: ????abcd => Type of ground. - * MAP3LO byte: ????abcd => Type of rail. - * MAP5: 00abcdef => rail - * 01abcdef => rail w/ signals - * 10uuuuuu => unused - * 11uuuudd => rail depot - */ - -static bool CheckTrackCombination(TileIndex tile, TrackBits to_build, uint flags) -{ - TrackBits current; /* The current track layout */ - TrackBits future; /* The track layout we want to build */ - _error_message = STR_1001_IMPOSSIBLE_TRACK_COMBINATION; - - if (!IsPlainRailTile(tile)) return false; - - /* So, we have a tile with tracks on it (and possibly signals). Let's see - * what tracks first */ - current = GetTrackBits(tile); - future = current | to_build; - - /* Are we really building something new? */ - if (current == future) { - /* Nothing new is being built */ - _error_message = STR_1007_ALREADY_BUILT; - return false; - } - - /* Let's see if we may build this */ - if (flags & DC_NO_RAIL_OVERLAP || HasSignals(tile)) { - /* If we are not allowed to overlap (flag is on for ai players or we have - * signals on the tile), check that */ - return future == TRACK_BIT_HORZ || future == TRACK_BIT_VERT; - } else { - /* Normally, we may overlap and any combination is valid */ - return true; - } -} - - -static const TrackBits _valid_tileh_slopes[][15] = { - -// set of normal ones -{ - TRACK_BIT_ALL, - TRACK_BIT_RIGHT, - TRACK_BIT_UPPER, - TRACK_BIT_X, - - TRACK_BIT_LEFT, - 0, - TRACK_BIT_Y, - TRACK_BIT_LOWER, - - TRACK_BIT_LOWER, - TRACK_BIT_Y, - 0, - TRACK_BIT_LEFT, - - TRACK_BIT_X, - TRACK_BIT_UPPER, - TRACK_BIT_RIGHT, -}, - -// allowed rail for an evenly raised platform -{ - 0, - TRACK_BIT_LEFT, - TRACK_BIT_LOWER, - TRACK_BIT_Y | TRACK_BIT_LOWER | TRACK_BIT_LEFT, - - TRACK_BIT_RIGHT, - TRACK_BIT_ALL, - TRACK_BIT_X | TRACK_BIT_LOWER | TRACK_BIT_RIGHT, - TRACK_BIT_ALL, - - TRACK_BIT_UPPER, - TRACK_BIT_X | TRACK_BIT_UPPER | TRACK_BIT_LEFT, - TRACK_BIT_ALL, - TRACK_BIT_ALL, - - TRACK_BIT_Y | TRACK_BIT_UPPER | TRACK_BIT_RIGHT, - TRACK_BIT_ALL, - TRACK_BIT_ALL -} -}; - -uint GetRailFoundation(Slope tileh, TrackBits bits) -{ - uint i; - - if (!IsSteepSlope(tileh)) { - if ((~_valid_tileh_slopes[0][tileh] & bits) == 0) return 0; - if ((~_valid_tileh_slopes[1][tileh] & bits) == 0) return tileh; - } - - switch (bits) { - default: NOT_REACHED(); - case TRACK_BIT_X: i = 0; break; - case TRACK_BIT_Y: i = 1; break; - case TRACK_BIT_LEFT: return 15 + 8 + (tileh == SLOPE_STEEP_W ? 4 : 0); - case TRACK_BIT_LOWER: return 15 + 8 + (tileh == SLOPE_STEEP_S ? 5 : 1); - case TRACK_BIT_RIGHT: return 15 + 8 + (tileh == SLOPE_STEEP_E ? 6 : 2); - case TRACK_BIT_UPPER: return 15 + 8 + (tileh == SLOPE_STEEP_N ? 7 : 3); - } - switch (tileh) { - case SLOPE_W: - case SLOPE_STEEP_W: i += 0; break; - case SLOPE_S: - case SLOPE_STEEP_S: i += 2; break; - case SLOPE_E: - case SLOPE_STEEP_E: i += 4; break; - case SLOPE_N: - case SLOPE_STEEP_N: i += 6; break; - default: return 0; - } - return i + 15; -} - - -static uint32 CheckRailSlope(Slope tileh, TrackBits rail_bits, TrackBits existing, TileIndex tile) -{ - if (IsSteepSlope(tileh)) { - if (existing == 0) { - TrackBits valid = TRACK_BIT_CROSS | (HASBIT(1 << SLOPE_STEEP_W | 1 << SLOPE_STEEP_E, tileh) ? TRACK_BIT_VERT : TRACK_BIT_HORZ); - if (valid & rail_bits) return _price.terraform; - } - } else { - rail_bits |= existing; - - // don't allow building on the lower side of a coast - if (IsTileType(tile, MP_WATER) && - ~_valid_tileh_slopes[1][tileh] & rail_bits) { - return_cmd_error(STR_3807_CAN_T_BUILD_ON_WATER); - } - - // no special foundation - if ((~_valid_tileh_slopes[0][tileh] & rail_bits) == 0) - return 0; - - if ((~_valid_tileh_slopes[1][tileh] & rail_bits) == 0 || ( // whole tile is leveled up - (rail_bits == TRACK_BIT_X || rail_bits == TRACK_BIT_Y) && - (tileh == SLOPE_W || tileh == SLOPE_S || tileh == SLOPE_E || tileh == SLOPE_N) - )) { // partly up - if (existing != 0) { - return 0; - } else if (!_patches.build_on_slopes || _is_old_ai_player) { - return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION); - } else { - return _price.terraform; - } - } - } - return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION); -} - -/* Validate functions for rail building */ -static inline bool ValParamTrackOrientation(Track track) {return IsValidTrack(track);} - -/** Build a single piece of rail - * @param tile tile to build on - * @param p1 railtype of being built piece (normal, mono, maglev) - * @param p2 rail track to build - */ -int32 CmdBuildSingleRail(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) -{ - Slope tileh; - RailType railtype; - Track track; - TrackBits trackbit; - int32 cost = 0; - int32 ret; - - if (!ValParamRailtype(p1) || !ValParamTrackOrientation(p2)) return CMD_ERROR; - railtype = (RailType)p1; - track = (Track)p2; - - tileh = GetTileSlope(tile, NULL); - trackbit = TrackToTrackBits(track); - - SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION); - - switch (GetTileType(tile)) { - case MP_RAILWAY: - if (!CheckTrackCombination(tile, trackbit, flags) || - !EnsureNoVehicle(tile)) { - return CMD_ERROR; - } - if (!IsTileOwner(tile, _current_player) || - !IsCompatibleRail(GetRailType(tile), railtype)) { - // Get detailed error message - return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); - } - - ret = CheckRailSlope(tileh, trackbit, GetTrackBits(tile), tile); - if (CmdFailed(ret)) return ret; - cost += ret; - - /* If the rail types don't match, try to convert only if engines of - * the present rail type are powered on the new rail type. */ - if (GetRailType(tile) != railtype && HasPowerOnRail(GetRailType(tile), railtype)) { - ret = DoCommand(tile, tile, railtype, flags, CMD_CONVERT_RAIL); - if (CmdFailed(ret)) return ret; - cost += ret; - } - - if (flags & DC_EXEC) { - SetRailGroundType(tile, RAIL_GROUND_BARREN); - SetTrackBits(tile, GetTrackBits(tile) | trackbit); - } - break; - - case MP_STREET: -#define M(x) (1 << (x)) - /* Level crossings may only be built on these slopes */ - if (!HASBIT(M(SLOPE_SEN) | M(SLOPE_ENW) | M(SLOPE_NWS) | M(SLOPE_NS) | M(SLOPE_WSE) | M(SLOPE_EW) | M(SLOPE_FLAT), tileh)) { - return_cmd_error(STR_1000_LAND_SLOPED_IN_WRONG_DIRECTION); - } -#undef M - - if (!EnsureNoVehicle(tile)) return CMD_ERROR; - - if (GetRoadTileType(tile) == ROAD_TILE_NORMAL) { - if (HasRoadWorks(tile)) return_cmd_error(STR_ROAD_WORKS_IN_PROGRESS); - - if ((track == TRACK_X && GetRoadBits(tile) == ROAD_Y) || - (track == TRACK_Y && GetRoadBits(tile) == ROAD_X)) { - if (flags & DC_EXEC) { - MakeRoadCrossing(tile, GetTileOwner(tile), _current_player, (track == TRACK_X ? AXIS_Y : AXIS_X), railtype, GetTownIndex(tile)); - } - break; - } - } - - if (IsLevelCrossing(tile) && GetCrossingRailBits(tile) == trackbit) { - return_cmd_error(STR_1007_ALREADY_BUILT); - } - /* FALLTHROUGH */ - - default: - ret = CheckRailSlope(tileh, trackbit, 0, tile); - if (CmdFailed(ret)) return ret; - cost += ret; - - ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); - if (CmdFailed(ret)) return ret; - cost += ret; - - if (flags & DC_EXEC) MakeRailNormal(tile, _current_player, trackbit, railtype); - break; - } - - if (flags & DC_EXEC) { - MarkTileDirtyByTile(tile); - SetSignalsOnBothDir(tile, track); - YapfNotifyTrackLayoutChange(tile, track); - } - - return cost + _price.build_rail; -} - -/** Remove a single piece of track - * @param tile tile to remove track from - * @param p1 unused - * @param p2 rail orientation - */ -int32 CmdRemoveSingleRail(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) -{ - Track track = (Track)p2; - TrackBits trackbit; - int32 cost = _price.remove_rail; - bool crossing = false; - - if (!ValParamTrackOrientation(p2)) return CMD_ERROR; - trackbit = TrackToTrackBits(track); - - SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION); - - switch (GetTileType(tile)) { - case MP_STREET: { - if (!IsLevelCrossing(tile) || - GetCrossingRailBits(tile) != trackbit || - (_current_player != OWNER_WATER && !CheckTileOwnership(tile)) || - !EnsureNoVehicle(tile)) { - return CMD_ERROR; - } - - if (flags & DC_EXEC) { - MakeRoadNormal(tile, GetCrossingRoadOwner(tile), GetCrossingRoadBits(tile), GetTownIndex(tile)); - } - break; - } - - case MP_RAILWAY: { - TrackBits present; - - if (!IsPlainRailTile(tile) || - (_current_player != OWNER_WATER && !CheckTileOwnership(tile)) || - !EnsureNoVehicle(tile)) { - return CMD_ERROR; - } - - present = GetTrackBits(tile); - if ((present & trackbit) == 0) return CMD_ERROR; - if (present == (TRACK_BIT_X | TRACK_BIT_Y)) crossing = true; - - /* Charge extra to remove signals on the track, if they are there */ - if (HasSignalOnTrack(tile, track)) - cost += DoCommand(tile, track, 0, flags, CMD_REMOVE_SIGNALS); - - if (flags & DC_EXEC) { - present ^= trackbit; - if (present == 0) { - DoClearSquare(tile); - } else { - SetTrackBits(tile, present); - } - } - break; - } - - default: return CMD_ERROR; - } - - if (flags & DC_EXEC) { - MarkTileDirtyByTile(tile); - if (crossing) { - /* crossing is set when only TRACK_BIT_X and TRACK_BIT_Y are set. As we - * are removing one of these pieces, we'll need to update signals for - * both directions explicitly, as after the track is removed it won't - * 'connect' with the other piece. */ - SetSignalsOnBothDir(tile, TRACK_X); - SetSignalsOnBothDir(tile, TRACK_Y); - YapfNotifyTrackLayoutChange(tile, TRACK_X); - YapfNotifyTrackLayoutChange(tile, TRACK_Y); - } else { - SetSignalsOnBothDir(tile, track); - YapfNotifyTrackLayoutChange(tile, track); - } - } - - return cost; -} - - -static const TileIndexDiffC _trackdelta[] = { - { -1, 0 }, { 0, 1 }, { -1, 0 }, { 0, 1 }, { 1, 0 }, { 0, 1 }, - { 0, 0 }, - { 0, 0 }, - { 1, 0 }, { 0, -1 }, { 0, -1 }, { 1, 0 }, { 0, -1 }, { -1, 0 }, - { 0, 0 }, - { 0, 0 } -}; - - -static int32 ValidateAutoDrag(Trackdir *trackdir, TileIndex start, TileIndex end) -{ - int x = TileX(start); - int y = TileY(start); - int ex = TileX(end); - int ey = TileY(end); - int dx, dy, trdx, trdy; - - if (!ValParamTrackOrientation(*trackdir)) return CMD_ERROR; - - // calculate delta x,y from start to end tile - dx = ex - x; - dy = ey - y; - - // calculate delta x,y for the first direction - trdx = _trackdelta[*trackdir].x; - trdy = _trackdelta[*trackdir].y; - - if (!IsDiagonalTrackdir(*trackdir)) { - trdx += _trackdelta[*trackdir ^ 1].x; - trdy += _trackdelta[*trackdir ^ 1].y; - } - - // validate the direction - while ( - (trdx <= 0 && dx > 0) || - (trdx >= 0 && dx < 0) || - (trdy <= 0 && dy > 0) || - (trdy >= 0 && dy < 0) - ) { - if (!HASBIT(*trackdir, 3)) { // first direction is invalid, try the other - SETBIT(*trackdir, 3); // reverse the direction - trdx = -trdx; - trdy = -trdy; - } else { // other direction is invalid too, invalid drag - return CMD_ERROR; - } - } - - // (for diagonal tracks, this is already made sure of by above test), but: - // for non-diagonal tracks, check if the start and end tile are on 1 line - if (!IsDiagonalTrackdir(*trackdir)) { - trdx = _trackdelta[*trackdir].x; - trdy = _trackdelta[*trackdir].y; - if (abs(dx) != abs(dy) && abs(dx) + abs(trdy) != abs(dy) + abs(trdx)) - return CMD_ERROR; - } - - return 0; -} - -/** Build a stretch of railroad tracks. - * @param tile start tile of drag - * @param p1 end tile of drag - * @param p2 various bitstuffed elements - * - p2 = (bit 0-3) - railroad type normal/maglev (0 = normal, 1 = mono, 2 = maglev) - * - p2 = (bit 4-6) - track-orientation, valid values: 0-5 (Track enum) - * - p2 = (bit 7) - 0 = build, 1 = remove tracks - */ -static int32 CmdRailTrackHelper(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) -{ - int32 ret, total_cost = 0; - Track track = (Track)GB(p2, 4, 3); - Trackdir trackdir; - byte mode = HASBIT(p2, 7); - RailType railtype = (RailType)GB(p2, 0, 4); - TileIndex end_tile; - - if (!ValParamRailtype(railtype) || !ValParamTrackOrientation(track)) return CMD_ERROR; - if (p1 >= MapSize()) return CMD_ERROR; - end_tile = p1; - trackdir = TrackToTrackdir(track); - - SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION); - - if (CmdFailed(ValidateAutoDrag(&trackdir, tile, end_tile))) return CMD_ERROR; - - if (flags & DC_EXEC) SndPlayTileFx(SND_20_SPLAT_2, tile); - - for (;;) { - ret = DoCommand(tile, railtype, TrackdirToTrack(trackdir), flags, (mode == 0) ? CMD_BUILD_SINGLE_RAIL : CMD_REMOVE_SINGLE_RAIL); - - if (CmdFailed(ret)) { - if ((_error_message != STR_1007_ALREADY_BUILT) && (mode == 0)) break; - _error_message = INVALID_STRING_ID; - } else { - total_cost += ret; - } - - if (tile == end_tile) break; - - tile += ToTileIndexDiff(_trackdelta[trackdir]); - - // toggle railbit for the non-diagonal tracks - if (!IsDiagonalTrackdir(trackdir)) trackdir ^= 1; - } - - return (total_cost == 0) ? CMD_ERROR : total_cost; -} - -/** Build rail on a stretch of track. - * Stub for the unified rail builder/remover - * @see CmdRailTrackHelper - */ -int32 CmdBuildRailroadTrack(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) -{ - return CmdRailTrackHelper(tile, flags, p1, CLRBIT(p2, 7)); -} - -/** Build rail on a stretch of track. - * Stub for the unified rail builder/remover - * @see CmdRailTrackHelper - */ -int32 CmdRemoveRailroadTrack(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) -{ - return CmdRailTrackHelper(tile, flags, p1, SETBIT(p2, 7)); -} - -/** Build a train depot - * @param tile position of the train depot - * @param p1 rail type - * @param p2 entrance direction (DiagDirection) - * - * @todo When checking for the tile slope, - * distingush between "Flat land required" and "land sloped in wrong direction" - */ -int32 CmdBuildTrainDepot(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) -{ - Depot *d; - int32 cost, ret; - Slope tileh; - - SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION); - - if (!EnsureNoVehicle(tile)) return CMD_ERROR; - /* check railtype and valid direction for depot (0 through 3), 4 in total */ - if (!ValParamRailtype(p1) || p2 > 3) return CMD_ERROR; - - tileh = GetTileSlope(tile, NULL); - - /* Prohibit construction if - * The tile is non-flat AND - * 1) The AI is "old-school" - * 2) build-on-slopes is disabled - * 3) the tile is steep i.e. spans two height levels - * 4) the exit points in the wrong direction - */ - - if (tileh != SLOPE_FLAT && ( - _is_old_ai_player || - !_patches.build_on_slopes || - IsSteepSlope(tileh) || - !CanBuildDepotByTileh(p2, tileh) - )) { - return_cmd_error(STR_0007_FLAT_LAND_REQUIRED); - } - - ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); - if (CmdFailed(ret)) return CMD_ERROR; - cost = ret; - - if (MayHaveBridgeAbove(tile) && IsBridgeAbove(tile)) return_cmd_error(STR_5007_MUST_DEMOLISH_BRIDGE_FIRST); - - d = AllocateDepot(); - if (d == NULL) return CMD_ERROR; - - if (flags & DC_EXEC) { - MakeRailDepot(tile, _current_player, p2, p1); - MarkTileDirtyByTile(tile); - - d->xy = tile; - d->town_index = ClosestTownFromTile(tile, (uint)-1)->index; - - UpdateSignalsOnSegment(tile, p2); - YapfNotifyTrackLayoutChange(tile, TrackdirToTrack(DiagdirToDiagTrackdir(p2))); - } - - return cost + _price.build_train_depot; -} - -/** Build signals, alternate between double/single, signal/semaphore, - * pre/exit/combo-signals, and what-else not - * @param tile tile where to build the signals - * @param p1 various bitstuffed elements - * - p1 = (bit 0-2) - track-orientation, valid values: 0-5 (Track enum) - * - p1 = (bit 3) - choose semaphores/signals or cycle normal/pre/exit/combo depending on context - * @param p2 used for CmdBuildManySignals() to copy direction of first signal - * TODO: p2 should be replaced by two bits for "along" and "against" the track. - */ -int32 CmdBuildSingleSignal(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) -{ - SignalVariant sigvar; - bool pre_signal; - Track track = (Track)(p1 & 0x7); - int32 cost; - - // Same bit, used in different contexts - sigvar = HASBIT(p1, 3) ? SIG_SEMAPHORE : SIG_ELECTRIC; - pre_signal = HASBIT(p1, 3); - - if (!ValParamTrackOrientation(track) || !IsTileType(tile, MP_RAILWAY) || !EnsureNoVehicle(tile)) - return CMD_ERROR; - - /* Protect against invalid signal copying */ - if (p2 != 0 && (p2 & SignalOnTrack(track)) == 0) return CMD_ERROR; - - /* You can only build signals on plain rail tiles, and the selected track must exist */ - if (!IsPlainRailTile(tile) || !HasTrack(tile, track)) return CMD_ERROR; - - if (!CheckTileOwnership(tile)) return CMD_ERROR; - - _error_message = STR_1005_NO_SUITABLE_RAILROAD_TRACK; - - { - /* See if this is a valid track combination for signals, (ie, no overlap) */ - TrackBits trackbits = GetTrackBits(tile); - if (KILL_FIRST_BIT(trackbits) != 0 && /* More than one track present */ - trackbits != TRACK_BIT_HORZ && - trackbits != TRACK_BIT_VERT) { - return CMD_ERROR; - } - } - - SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION); - - if (!HasSignalOnTrack(tile, track)) { - // build new signals - cost = _price.build_signals; - } else { - if (p2 != 0 && sigvar != GetSignalVariant(tile)) { - // convert signals <-> semaphores - cost = _price.build_signals + _price.remove_signals; - } else { - // it is free to change orientation/pre-exit-combo signals - cost = 0; - } - } - - if (flags & DC_EXEC) { - if (!HasSignals(tile)) { - // there are no signals at all on this tile yet - _m[tile].m5 |= RAIL_TILE_SIGNALS; // change into signals - _m[tile].m2 |= 0xF0; // all signals are on - _m[tile].m3 &= ~0xF0; // no signals built by default - SetSignalType(tile, SIGTYPE_NORMAL); - SetSignalVariant(tile, sigvar); - } - - if (p2 == 0) { - if (!HasSignalOnTrack(tile, track)) { - // build new signals - _m[tile].m3 |= SignalOnTrack(track); - } else { - if (pre_signal) { - // cycle between normal -> pre -> exit -> combo -> ... - SignalType type = GetSignalType(tile); - - SetSignalType(tile, type == SIGTYPE_COMBO ? SIGTYPE_NORMAL : type + 1); - } else { - CycleSignalSide(tile, track); - } - } - } else { - /* If CmdBuildManySignals is called with copying signals, just copy the - * direction of the first signal given as parameter by CmdBuildManySignals */ - _m[tile].m3 &= ~SignalOnTrack(track); - _m[tile].m3 |= p2 & SignalOnTrack(track); - SetSignalVariant(tile, sigvar); - } - - MarkTileDirtyByTile(tile); - SetSignalsOnBothDir(tile, track); - YapfNotifyTrackLayoutChange(tile, track); - } - - return cost; -} - -/** Build many signals by dragging; AutoSignals - * @param tile start tile of drag - * @param p1 end tile of drag - * @param p2 various bitstuffed elements - * - p2 = (bit 0) - 0 = build, 1 = remove signals - * - p2 = (bit 3) - 0 = signals, 1 = semaphores - * - p2 = (bit 4- 6) - track-orientation, valid values: 0-5 (Track enum) - * - p2 = (bit 24-31) - user defined signals_density - */ -static int32 CmdSignalTrackHelper(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) -{ - int32 ret, total_cost, signal_ctr; - byte signals; - bool error = true; - TileIndex end_tile; - - int mode = p2 & 0x1; - Track track = GB(p2, 4, 3); - Trackdir trackdir = TrackToTrackdir(track); - byte semaphores = (HASBIT(p2, 3) ? 8 : 0); - byte signal_density = (p2 >> 24); - - if (p1 >= MapSize()) return CMD_ERROR; - end_tile = p1; - if (signal_density == 0 || signal_density > 20) return CMD_ERROR; - - if (!IsTileType(tile, MP_RAILWAY)) return CMD_ERROR; - - SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION); - - /* for vertical/horizontal tracks, double the given signals density - * since the original amount will be too dense (shorter tracks) */ - if (!IsDiagonalTrack(track)) signal_density *= 2; - - if (CmdFailed(ValidateAutoDrag(&trackdir, tile, end_tile))) return CMD_ERROR; - - track = TrackdirToTrack(trackdir); /* trackdir might have changed, keep track in sync */ - - // copy the signal-style of the first rail-piece if existing - if (HasSignals(tile)) { - signals = _m[tile].m3 & SignalOnTrack(track); - if (signals == 0) signals = SignalOnTrack(track); /* Can this actually occur? */ - - // copy signal/semaphores style (independent of CTRL) - semaphores = (GetSignalVariant(tile) == SIG_ELECTRIC ? 0 : 8); - } else { // no signals exist, drag a two-way signal stretch - signals = SignalOnTrack(track); - } - - /* signal_ctr - amount of tiles already processed - * signals_density - patch setting to put signal on every Nth tile (double space on |, -- tracks) - ********** - * trackdir - trackdir to build with autorail - * semaphores - semaphores or signals - * signals - is there a signal/semaphore on the first tile, copy its style (two-way/single-way) - * and convert all others to semaphore/signal - * mode - 1 remove signals, 0 build signals */ - signal_ctr = total_cost = 0; - for (;;) { - // only build/remove signals with the specified density - if (signal_ctr % signal_density == 0) { - ret = DoCommand(tile, TrackdirToTrack(trackdir) | semaphores, signals, flags, (mode == 1) ? CMD_REMOVE_SIGNALS : CMD_BUILD_SIGNALS); - - /* Be user-friendly and try placing signals as much as possible */ - if (!CmdFailed(ret)) { - error = false; - total_cost += ret; - } - } - - if (tile == end_tile) break; - - tile += ToTileIndexDiff(_trackdelta[trackdir]); - signal_ctr++; - - // toggle railbit for the non-diagonal tracks (|, -- tracks) - if (!IsDiagonalTrackdir(trackdir)) trackdir ^= 1; - } - - return error ? CMD_ERROR : total_cost; -} - -/** Build signals on a stretch of track. - * Stub for the unified signal builder/remover - * @see CmdSignalTrackHelper - */ -int32 CmdBuildSignalTrack(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) -{ - return CmdSignalTrackHelper(tile, flags, p1, p2); -} - -/** Remove signals - * @param tile coordinates where signal is being deleted from - * @param p1 track to remove signal from (Track enum) - */ -int32 CmdRemoveSingleSignal(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) -{ - Track track = (Track)(p1 & 0x7); - - if (!ValParamTrackOrientation(track) || - !IsTileType(tile, MP_RAILWAY) || - !EnsureNoVehicle(tile) || - !HasSignalOnTrack(tile, track)) { - return CMD_ERROR; - } - - /* Only water can remove signals from anyone */ - if (_current_player != OWNER_WATER && !CheckTileOwnership(tile)) return CMD_ERROR; - - SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION); - - /* Do it? */ - if (flags & DC_EXEC) { - _m[tile].m3 &= ~SignalOnTrack(track); - - /* removed last signal from tile? */ - if (GB(_m[tile].m3, 4, 4) == 0) { - SB(_m[tile].m2, 4, 4, 0); - SB(_m[tile].m5, 6, 2, RAIL_TILE_NORMAL >> 6); // XXX >> because the constant is meant for direct application, not use with SB - SetSignalVariant(tile, SIG_ELECTRIC); // remove any possible semaphores - } - - SetSignalsOnBothDir(tile, track); - YapfNotifyTrackLayoutChange(tile, track); - - MarkTileDirtyByTile(tile); - } - - return _price.remove_signals; -} - -/** Remove signals on a stretch of track. - * Stub for the unified signal builder/remover - * @see CmdSignalTrackHelper - */ -int32 CmdRemoveSignalTrack(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) -{ - return CmdSignalTrackHelper(tile, flags, p1, SETBIT(p2, 0)); -} - -typedef int32 DoConvertRailProc(TileIndex tile, RailType totype, bool exec); - -static int32 DoConvertRail(TileIndex tile, RailType totype, bool exec) -{ - if (!CheckTileOwnership(tile)) return CMD_ERROR; - - if (!EnsureNoVehicle(tile) && (!IsCompatibleRail(GetRailType(tile), totype) || IsPlainRailTile(tile))) return CMD_ERROR; - - // tile is already of requested type? - if (GetRailType(tile) == totype) return CMD_ERROR; - - // 'hidden' elrails can't be downgraded to normal rail when elrails are disabled - if (_patches.disable_elrails && totype == RAILTYPE_RAIL && GetRailType(tile) == RAILTYPE_ELECTRIC) return CMD_ERROR; - - // change type. - if (exec) { - TrackBits tracks; - SetRailType(tile, totype); - MarkTileDirtyByTile(tile); - - // notify YAPF about the track layout change - for (tracks = GetTrackBits(tile); tracks != TRACK_BIT_NONE; tracks = KILL_FIRST_BIT(tracks)) - YapfNotifyTrackLayoutChange(tile, FIND_FIRST_BIT(tracks)); - - if (IsTileDepotType(tile, TRANSPORT_RAIL)) { - Vehicle *v; - - /* Update build vehicle window related to this depot */ - InvalidateWindowData(WC_BUILD_VEHICLE, tile); - - /* update power of trains in this depot */ - FOR_ALL_VEHICLES(v) { - if (v->type == VEH_Train && IsFrontEngine(v) && v->tile == tile && v->u.rail.track == 0x80) { - TrainPowerChanged(v); - } - } - } - } - - return _price.build_rail / 2; -} - -extern int32 DoConvertStationRail(TileIndex tile, RailType totype, bool exec); -extern int32 DoConvertStreetRail(TileIndex tile, RailType totype, bool exec); -extern int32 DoConvertTunnelBridgeRail(TileIndex tile, RailType totype, bool exec); - -/** Convert one rail type to the other. You can convert normal rail to - * monorail/maglev easily or vice-versa. - * @param tile end tile of rail conversion drag - * @param p1 start tile of drag - * @param p2 new railtype to convert to - */ -int32 CmdConvertRail(TileIndex tile, uint32 flags, uint32 p1, uint32 p2) -{ - int32 ret, cost, money; - int ex; - int ey; - int sx, sy, x, y; - - SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION); - - if (!ValParamRailtype(p2)) return CMD_ERROR; - if (p1 >= MapSize()) return CMD_ERROR; - - // make sure sx,sy are smaller than ex,ey - ex = TileX(tile); - ey = TileY(tile); - sx = TileX(p1); - sy = TileY(p1); - if (ex < sx) intswap(ex, sx); - if (ey < sy) intswap(ey, sy); - - money = GetAvailableMoneyForCommand(); - cost = 0; - ret = 0; - - for (x = sx; x <= ex; ++x) { - for (y = sy; y <= ey; ++y) { - TileIndex tile = TileXY(x, y); - DoConvertRailProc* proc; - - switch (GetTileType(tile)) { - case MP_RAILWAY: proc = DoConvertRail; break; - case MP_STATION: proc = DoConvertStationRail; break; - case MP_STREET: proc = DoConvertStreetRail; break; - case MP_TUNNELBRIDGE: proc = DoConvertTunnelBridgeRail; break; - default: continue; - } - - ret = proc(tile, p2, false); - if (CmdFailed(ret)) continue; - cost += ret; - - if (flags & DC_EXEC) { - money -= ret; - if (money < 0) { - _additional_cash_required = ret; - return cost - ret; - } - proc(tile, p2, true); - } - } - } - - return (cost == 0) ? ret : cost; -} - -static int32 RemoveTrainDepot(TileIndex tile, uint32 flags) -{ - if (!CheckTileOwnership(tile) && _current_player != OWNER_WATER) - return CMD_ERROR; - - if (!EnsureNoVehicle(tile)) - return CMD_ERROR; - - if (flags & DC_EXEC) { - DiagDirection dir = GetRailDepotDirection(tile); - - DeleteDepot(GetDepotByTile(tile)); - UpdateSignalsOnSegment(tile, dir); - YapfNotifyTrackLayoutChange(tile, TrackdirToTrack(DiagdirToDiagTrackdir(dir))); - } - - return _price.remove_train_depot; -} - -static int32 ClearTile_Track(TileIndex tile, byte flags) -{ - int32 cost; - int32 ret; - - if (flags & DC_AUTO) { - if (!IsTileOwner(tile, _current_player)) - return_cmd_error(STR_1024_AREA_IS_OWNED_BY_ANOTHER); - - if (IsPlainRailTile(tile)) { - return_cmd_error(STR_1008_MUST_REMOVE_RAILROAD_TRACK); - } else { - return_cmd_error(STR_2004_BUILDING_MUST_BE_DEMOLISHED); - } - } - - cost = 0; - - switch (GetRailTileType(tile)) { - case RAIL_TILE_SIGNALS: - case RAIL_TILE_NORMAL: { - TrackBits tracks = GetTrackBits(tile); - uint i; - - for_each_bit (i, tracks) { - ret = DoCommand(tile, 0, i, flags, CMD_REMOVE_SINGLE_RAIL); - if (CmdFailed(ret)) return CMD_ERROR; - cost += ret; - } - return cost; - } - - case RAIL_TILE_DEPOT_WAYPOINT: - if (GetRailTileSubtype(tile) == RAIL_SUBTYPE_DEPOT) { - return RemoveTrainDepot(tile, flags); - } else { - return RemoveTrainWaypoint(tile, flags, false); - } - - default: - return CMD_ERROR; - } -} - -#include "table/track_land.h" - -static void DrawSingleSignal(TileIndex tile, byte condition, uint image, uint pos) -{ - bool side = _opt.road_side & _patches.signal_side; - static const Point SignalPositions[2][12] = { - { /* Signals on the left side */ - /* LEFT LEFT RIGHT RIGHT UPPER UPPER */ - { 8, 5}, {14, 1}, { 1, 14}, { 9, 11}, { 1, 0}, { 3, 10}, - /* LOWER LOWER X X Y Y */ - {11, 4}, {14, 14}, {11, 3}, { 4, 13}, { 3, 4}, {11, 13} - }, { /* Signals on the right side */ - /* LEFT LEFT RIGHT RIGHT UPPER UPPER */ - {14, 1}, {12, 10}, { 4, 6}, { 1, 14}, {10, 4}, { 0, 1}, - /* LOWER LOWER X X Y Y */ - {14, 14}, { 5, 12}, {11, 13}, { 4, 3}, {13, 4}, { 3, 11} - } - }; - - static const SpriteID SignalBase[2][2][4] = { - { /* Signals on left side */ - { 0x4FB, 0x1323, 0x1333, 0x1343}, /* light signals */ - { 0x1353, 0x1363, 0x1373, 0x1383} /* semaphores */ - }, { /* Signals on right side */ - { 0x4FB, 0x1323, 0x1333, 0x1343}, /* light signals */ - { 0x1446, 0x1456, 0x1466, 0x1476} /* semaphores */ - /* | | | | */ - /* normal, entry, exit, combo */ - } - }; - - uint x = TileX(tile) * TILE_SIZE + SignalPositions[side][pos].x; - uint y = TileY(tile) * TILE_SIZE + SignalPositions[side][pos].y; - - SpriteID sprite; - - /* _signal_base is set by our NewGRF Action 5 loader. If it is 0 then we - * just draw the standard signals, else we get the offset from _signal_base - * and draw that sprite. All the signal sprites are loaded sequentially. */ - if (_signal_base == 0 || (GetSignalType(tile) == 0 && GetSignalVariant(tile) == SIG_ELECTRIC)) { - sprite = SignalBase[side][GetSignalVariant(tile)][GetSignalType(tile)] + image + condition; - } else { - sprite = _signal_base + (GetSignalType(tile) - 1) * 16 + GetSignalVariant(tile) * 64 + image + condition; - } - - AddSortableSpriteToDraw(sprite, x, y, 1, 1, 10, GetSlopeZ(x,y)); -} - -static uint32 _drawtile_track_palette; - - -static void DrawTrackFence_NW(const TileInfo *ti) -{ - uint32 image = 0x515; - if (ti->tileh != SLOPE_FLAT) image = (ti->tileh & SLOPE_S) ? 0x519 : 0x51B; - AddSortableSpriteToDraw(image | _drawtile_track_palette, - ti->x, ti->y + 1, 16, 1, 4, ti->z); -} - -static void DrawTrackFence_SE(const TileInfo *ti) -{ - uint32 image = 0x515; - if (ti->tileh != SLOPE_FLAT) image = (ti->tileh & SLOPE_S) ? 0x519 : 0x51B; - AddSortableSpriteToDraw(image | _drawtile_track_palette, - ti->x, ti->y + TILE_SIZE - 1, 16, 1, 4, ti->z); -} - -static void DrawTrackFence_NW_SE(const TileInfo *ti) -{ - DrawTrackFence_NW(ti); - DrawTrackFence_SE(ti); -} - -static void DrawTrackFence_NE(const TileInfo *ti) -{ - uint32 image = 0x516; - if (ti->tileh != SLOPE_FLAT) image = (ti->tileh & SLOPE_S) ? 0x51A : 0x51C; - AddSortableSpriteToDraw(image | _drawtile_track_palette, - ti->x + 1, ti->y, 1, 16, 4, ti->z); -} - -static void DrawTrackFence_SW(const TileInfo *ti) -{ - uint32 image = 0x516; - if (ti->tileh != SLOPE_FLAT) image = (ti->tileh & SLOPE_S) ? 0x51A : 0x51C; - AddSortableSpriteToDraw(image | _drawtile_track_palette, - ti->x + TILE_SIZE - 1, ti->y, 1, 16, 4, ti->z); -} - -static void DrawTrackFence_NE_SW(const TileInfo *ti) -{ - DrawTrackFence_NE(ti); - DrawTrackFence_SW(ti); -} - -static void DrawTrackFence_NS_1(const TileInfo *ti) -{ - int z = ti->z; - if (ti->tileh & SLOPE_W) z += TILE_HEIGHT; - AddSortableSpriteToDraw(0x517 | _drawtile_track_palette, - ti->x + TILE_SIZE / 2, ti->y + TILE_SIZE / 2, 1, 1, 4, z); -} - -static void DrawTrackFence_NS_2(const TileInfo *ti) -{ - int z = ti->z; - if (ti->tileh & SLOPE_E) z += TILE_HEIGHT; - AddSortableSpriteToDraw(0x517 | _drawtile_track_palette, - ti->x + TILE_SIZE / 2, ti->y + TILE_SIZE / 2, 1, 1, 4, z); -} - -static void DrawTrackFence_WE_1(const TileInfo *ti) -{ - int z = ti->z; - if (ti->tileh & SLOPE_N) z += TILE_HEIGHT; - AddSortableSpriteToDraw(0x518 | _drawtile_track_palette, - ti->x + TILE_SIZE / 2, ti->y + TILE_SIZE / 2, 1, 1, 4, z); -} - -static void DrawTrackFence_WE_2(const TileInfo *ti) -{ - int z = ti->z; - if (ti->tileh & SLOPE_S) z += TILE_HEIGHT; - AddSortableSpriteToDraw(0x518 | _drawtile_track_palette, - ti->x + TILE_SIZE / 2, ti->y + TILE_SIZE / 2, 1, 1, 4, z); -} - - -static void DrawTrackDetails(const TileInfo* ti) -{ - switch (GetRailGroundType(ti->tile)) { - case RAIL_GROUND_FENCE_NW: DrawTrackFence_NW(ti); break; - case RAIL_GROUND_FENCE_SE: DrawTrackFence_SE(ti); break; - case RAIL_GROUND_FENCE_SENW: DrawTrackFence_NW_SE(ti); break; - case RAIL_GROUND_FENCE_NE: DrawTrackFence_NE(ti); break; - case RAIL_GROUND_FENCE_SW: DrawTrackFence_SW(ti); break; - case RAIL_GROUND_FENCE_NESW: DrawTrackFence_NE_SW(ti); break; - case RAIL_GROUND_FENCE_VERT1: DrawTrackFence_NS_1(ti); break; - case RAIL_GROUND_FENCE_VERT2: DrawTrackFence_NS_2(ti); break; - case RAIL_GROUND_FENCE_HORIZ1: DrawTrackFence_WE_1(ti); break; - case RAIL_GROUND_FENCE_HORIZ2: DrawTrackFence_WE_2(ti); break; - default: break; - } -} - - -/** - * Draw ground sprite and track bits - * @param ti TileInfo - * @param track TrackBits to draw - * @param earth Draw as earth - * @param snow Draw as snow - * @param flat Always draw foundation - */ -static void DrawTrackBits(TileInfo* ti, TrackBits track) -{ - const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile)); - PalSpriteID image; - bool junction = false; - - // Select the sprite to use. - (image = rti->base_sprites.track_y, track == TRACK_BIT_Y) || - (image++, track == TRACK_BIT_X) || - (image++, track == TRACK_BIT_UPPER) || - (image++, track == TRACK_BIT_LOWER) || - (image++, track == TRACK_BIT_RIGHT) || - (image++, track == TRACK_BIT_LEFT) || - (image++, track == TRACK_BIT_CROSS) || - - (image = rti->base_sprites.track_ns, track == TRACK_BIT_HORZ) || - (image++, track == TRACK_BIT_VERT) || - - (junction = true, false) || - (image = rti->base_sprites.ground, (track & TRACK_BIT_3WAY_NE) == 0) || - (image++, (track & TRACK_BIT_3WAY_SW) == 0) || - (image++, (track & TRACK_BIT_3WAY_NW) == 0) || - (image++, (track & TRACK_BIT_3WAY_SE) == 0) || - (image++, true); - - if (ti->tileh != SLOPE_FLAT) { - uint foundation = GetRailFoundation(ti->tileh, track); - - if (foundation != 0) DrawFoundation(ti, foundation); - - // DrawFoundation() modifies ti. - // Default sloped sprites.. - if (ti->tileh != SLOPE_FLAT) - image = _track_sloped_sprites[ti->tileh - 1] + rti->base_sprites.track_y; - } - - switch (GetRailGroundType(ti->tile)) { - case RAIL_GROUND_BARREN: image |= PALETTE_TO_BARE_LAND; break; - case RAIL_GROUND_ICE_DESERT: image += rti->snow_offset; break; - default: break; - } - - DrawGroundSprite(image); - - // Draw track pieces individually for junction tiles - if (junction) { - if (track & TRACK_BIT_X) DrawGroundSprite(rti->base_sprites.single_y); - if (track & TRACK_BIT_Y) DrawGroundSprite(rti->base_sprites.single_x); - if (track & TRACK_BIT_UPPER) DrawGroundSprite(rti->base_sprites.single_n); - if (track & TRACK_BIT_LOWER) DrawGroundSprite(rti->base_sprites.single_s); - if (track & TRACK_BIT_LEFT) DrawGroundSprite(rti->base_sprites.single_w); - if (track & TRACK_BIT_RIGHT) DrawGroundSprite(rti->base_sprites.single_e); - } - - if (GetRailType(ti->tile) == RAILTYPE_ELECTRIC) DrawCatenary(ti); - -} - -static void DrawSignals(TileIndex tile, TrackBits rails) -{ -#define MAYBE_DRAW_SIGNAL(x,y,z) if (IsSignalPresent(tile, x)) DrawSingleSignal(tile, GetSingleSignalState(tile, x), y - 0x4FB, z) - - if (!(rails & TRACK_BIT_Y)) { - if (!(rails & TRACK_BIT_X)) { - if (rails & TRACK_BIT_LEFT) { - MAYBE_DRAW_SIGNAL(2, 0x509, 0); - MAYBE_DRAW_SIGNAL(3, 0x507, 1); - } - if (rails & TRACK_BIT_RIGHT) { - MAYBE_DRAW_SIGNAL(0, 0x509, 2); - MAYBE_DRAW_SIGNAL(1, 0x507, 3); - } - if (rails & TRACK_BIT_UPPER) { - MAYBE_DRAW_SIGNAL(3, 0x505, 4); - MAYBE_DRAW_SIGNAL(2, 0x503, 5); - } - if (rails & TRACK_BIT_LOWER) { - MAYBE_DRAW_SIGNAL(1, 0x505, 6); - MAYBE_DRAW_SIGNAL(0, 0x503, 7); - } - } else { - MAYBE_DRAW_SIGNAL(3, 0x4FB, 8); - MAYBE_DRAW_SIGNAL(2, 0x4FD, 9); - } - } else { - MAYBE_DRAW_SIGNAL(3, 0x4FF, 10); - MAYBE_DRAW_SIGNAL(2, 0x501, 11); - } -} - -static void DrawTile_Track(TileInfo *ti) -{ - const RailtypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile)); - PalSpriteID image; - - _drawtile_track_palette = SPRITE_PALETTE(PLAYER_SPRITE_COLOR(GetTileOwner(ti->tile))); - - if (IsPlainRailTile(ti->tile)) { - TrackBits rails = GetTrackBits(ti->tile); - - DrawTrackBits(ti, rails); - - if (_display_opt & DO_FULL_DETAIL) DrawTrackDetails(ti); - - if (HasSignals(ti->tile)) DrawSignals(ti->tile, rails); - } else { - // draw depot/waypoint - const DrawTileSprites* dts; - const DrawTileSeqStruct* dtss; - uint32 relocation; - - if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, ti->tileh); - - if (GetRailTileSubtype(ti->tile) == RAIL_SUBTYPE_DEPOT) { - dts = &_depot_gfx_table[GetRailDepotDirection(ti->tile)]; - - relocation = rti->total_offset; - - image = dts->ground_sprite; - if (image != SPR_FLAT_GRASS_TILE) image += rti->total_offset; - - // adjust ground tile for desert - // don't adjust for snow, because snow in depots looks weird - if (IsSnowRailGround(ti->tile) && _opt.landscape == LT_DESERT) { - if (image != SPR_FLAT_GRASS_TILE) { - image += rti->snow_offset; // tile with tracks - } else { - image = SPR_FLAT_SNOWY_TILE; // flat ground - } - } - } else { - // look for customization - byte stat_id = GetWaypointByTile(ti->tile)->stat_id; - const StationSpec *statspec = GetCustomStationSpec(STAT_CLASS_WAYP, stat_id); - - if (statspec != NULL) { - // emulate station tile - open with building - const Station* st = ComposeWaypointStation(ti->tile); - uint gfx = 2; - - if (HASBIT(statspec->callbackmask, CBM_CUSTOM_LAYOUT)) { - uint16 callback = GetStationCallback(CBID_STATION_SPRITE_LAYOUT, 0, 0, statspec, st, ti->tile); - if (callback != CALLBACK_FAILED) gfx = callback; - } - - if (statspec->renderdata == NULL) { - dts = GetStationTileLayout(gfx); - } else { - dts = &statspec->renderdata[(gfx < statspec->tiles ? gfx : 0) + GetWaypointAxis(ti->tile)]; - } - - if (dts != NULL && dts->seq != NULL) { - relocation = GetCustomStationRelocation(statspec, st, ti->tile); - - image = dts->ground_sprite; - if (HASBIT(image, 31)) { - CLRBIT(image, 31); - image += GetCustomStationGroundRelocation(statspec, st, ti->tile); - image += rti->custom_ground_offset; - } else { - image += rti->total_offset; - } - } else { - goto default_waypoint; - } - } else { -default_waypoint: - // There is no custom layout, fall back to the default graphics - dts = &_waypoint_gfx_table[GetWaypointAxis(ti->tile)]; - relocation = 0; - image = dts->ground_sprite + rti->total_offset; - if (IsSnowRailGround(ti->tile)) image += rti->snow_offset; - } - } - - DrawGroundSprite(image); - - if (GetRailType(ti->tile) == RAILTYPE_ELECTRIC) DrawCatenary(ti); - - foreach_draw_tile_seq(dtss, dts->seq) { - uint32 image = dtss->image + relocation; - - if (_display_opt & DO_TRANS_BUILDINGS) { - MAKE_TRANSPARENT(image); - } else if (image & PALETTE_MODIFIER_COLOR) { - image |= _drawtile_track_palette; - } - AddSortableSpriteToDraw( - image, - ti->x + dtss->delta_x, ti->y + dtss->delta_y, - dtss->size_x, dtss->size_y, - dtss->size_z, ti->z + dtss->delta_z - ); - } - } - DrawBridgeMiddle(ti); -} - - -static void DrawTileSequence(int x, int y, uint32 ground, const DrawTileSeqStruct* dtss, uint32 offset) -{ - uint32 palette = PLAYER_SPRITE_COLOR(_local_player); - - DrawSprite(ground, x, y); - for (; dtss->image != 0; dtss++) { - Point pt = RemapCoords(dtss->delta_x, dtss->delta_y, dtss->delta_z); - uint32 image = dtss->image + offset; - - if (image & PALETTE_MODIFIER_COLOR) image |= palette; - DrawSprite(image, x + pt.x, y + pt.y); - } -} - -void DrawTrainDepotSprite(int x, int y, int dir, RailType railtype) -{ - const DrawTileSprites* dts = &_depot_gfx_table[dir]; - uint32 image = dts->ground_sprite; - uint32 offset = GetRailTypeInfo(railtype)->total_offset; - - if (image != SPR_FLAT_GRASS_TILE) image += offset; - DrawTileSequence(x + 33, y + 17, image, dts->seq, offset); -} - -void DrawDefaultWaypointSprite(int x, int y, RailType railtype) -{ - uint32 offset = GetRailTypeInfo(railtype)->total_offset; - const DrawTileSprites* dts = &_waypoint_gfx_table[AXIS_X]; - - DrawTileSequence(x, y, dts->ground_sprite + offset, dts->seq, 0); -} - -typedef struct SetSignalsData { - int cur; - int cur_stack; - bool stop; - bool has_presignal; - - // presignal info - int presignal_exits; - int presignal_exits_free; - - // these are used to keep track of the signals that change. - byte bit[NUM_SSD_ENTRY]; - TileIndex tile[NUM_SSD_ENTRY]; - - // these are used to keep track of the stack that modifies presignals recursively - TileIndex next_tile[NUM_SSD_STACK]; - byte next_dir[NUM_SSD_STACK]; - -} SetSignalsData; - -static bool SetSignalsEnumProc(TileIndex tile, void* data, int track, uint length, byte* state) -{ - SetSignalsData* ssd = data; - - if (!IsTileType(tile, MP_RAILWAY)) return false; - - // the tile has signals? - if (HasSignalOnTrack(tile, TrackdirToTrack(track))) { - if (HasSignalOnTrackdir(tile, ReverseTrackdir(track))) { - // yes, add the signal to the list of signals - if (ssd->cur != NUM_SSD_ENTRY) { - ssd->tile[ssd->cur] = tile; // remember the tile index - ssd->bit[ssd->cur] = track; // and the controlling bit number - ssd->cur++; - } - - // remember if this block has a presignal. - ssd->has_presignal |= IsPresignalEntry(tile); - } - - if (HasSignalOnTrackdir(tile, track) && IsPresignalExit(tile)) { - // this is an exit signal that points out from the segment - ssd->presignal_exits++; - if (GetSignalStateByTrackdir(tile, track) != SIGNAL_STATE_RED) - ssd->presignal_exits_free++; - } - - return true; - } else if (IsTileDepotType(tile, TRANSPORT_RAIL)) { - return true; // don't look further if the tile is a depot - } - - return false; -} - -/* Struct to parse data from VehicleFromPos to SignalVehicleCheckProc */ -typedef struct SignalVehicleCheckStruct { - TileIndex tile; - uint track; -} SignalVehicleCheckStruct; - -static void *SignalVehicleCheckProc(Vehicle *v, void *data) -{ - const SignalVehicleCheckStruct* dest = data; - - if (v->type != VEH_Train) return NULL; - - /* Wrong tile, or no train? Not a match */ - if (v->tile != dest->tile) return NULL; - - /* Are we on the same piece of track? */ - if (dest->track & v->u.rail.track * 0x101) return v; - - return NULL; -} - -/* Special check for SetSignalsAfterProc, to see if there is a vehicle on this tile */ -static bool SignalVehicleCheck(TileIndex tile, uint track) -{ - SignalVehicleCheckStruct dest; - - dest.tile = tile; - dest.track = track; - - /* Locate vehicles in tunnels or on bridges */ - if (IsTunnelTile(tile) || IsBridgeTile(tile)) { - TileIndex end; - DiagDirection direction; - - if (IsTunnelTile(tile)) { - end = GetOtherTunnelEnd(tile); - direction = GetTunnelDirection(tile); - } else { - end = GetOtherBridgeEnd(tile); - direction = GetBridgeRampDirection(tile); - } - - dest.track = 1 << (direction & 1); // get the trackbit the vehicle would have if it has not entered the tunnel yet (ie is still visible) - - // check for a vehicle with that trackdir on the start tile of the tunnel - if (VehicleFromPos(tile, &dest, SignalVehicleCheckProc) != NULL) return true; - - // check for a vehicle with that trackdir on the end tile of the tunnel - if (VehicleFromPos(end, &dest, SignalVehicleCheckProc) != NULL) return true; - - // now check all tiles from start to end for a warping vehicle - // NOTE: the hashes for tiles may overlap, so this could maybe be optimised a bit by not checking every tile? - dest.track = 0x40; //Vehicle inside a tunnel or on a bridge - for (; tile != end; tile += TileOffsByDiagDir(direction)) { - if (VehicleFromPos(tile, &dest, SignalVehicleCheckProc) != NULL) - return true; - } - - // no vehicle found - return false; - } - - return VehicleFromPos(tile, &dest, SignalVehicleCheckProc) != NULL; -} - -static void SetSignalsAfterProc(TrackPathFinder *tpf) -{ - SetSignalsData *ssd = tpf->userdata; - const TrackPathFinderLink* link; - uint offs; - uint i; - - ssd->stop = false; - - /* Go through all the PF tiles */ - for (i = 0; i < lengthof(tpf->hash_head); i++) { - /* Empty hash item */ - if (tpf->hash_head[i] == 0) continue; - - /* If 0x8000 is not set, there is only 1 item */ - if (!(tpf->hash_head[i] & 0x8000)) { - /* Check if there is a vehicle on this tile */ - if (SignalVehicleCheck(tpf->hash_tile[i], tpf->hash_head[i])) { - ssd->stop = true; - return; - } - } else { - /* There are multiple items, where hash_tile points to the first item in the list */ - offs = tpf->hash_tile[i]; - do { - /* Find the next item */ - link = PATHFIND_GET_LINK_PTR(tpf, offs); - /* Check if there is a vehicle on this tile */ - if (SignalVehicleCheck(link->tile, link->flags)) { - ssd->stop = true; - return; - } - /* Goto the next item */ - } while ((offs = link->next) != 0xFFFF); - } - } -} - -static const byte _dir_from_track[14] = { - 0,1,0,1,2,1, 0,0, - 2,3,3,2,3,0, -}; - - -static void ChangeSignalStates(SetSignalsData *ssd) -{ - int i; - - // thinking about presignals... - // the presignal is green if, - // if no train is in the segment AND - // there is at least one green exit signal OR - // there are no exit signals in the segment - - // then mark the signals in the segment accordingly - for (i = 0; i != ssd->cur; i++) { - TileIndex tile = ssd->tile[i]; - byte bit = SignalAgainstTrackdir(ssd->bit[i]); - uint16 m2 = _m[tile].m2; - - // presignals don't turn green if there is at least one presignal exit and none are free - if (IsPresignalEntry(tile)) { - int ex = ssd->presignal_exits, exfree = ssd->presignal_exits_free; - - // subtract for dual combo signals so they don't count themselves - if (IsPresignalExit(tile) && HasSignalOnTrackdir(tile, ssd->bit[i])) { - ex--; - if (GetSignalStateByTrackdir(tile, ssd->bit[i]) != SIGNAL_STATE_RED) exfree--; - } - - // if we have exits and none are free, make red. - if (ex && !exfree) goto make_red; - } - - // check if the signal is unaffected. - if (ssd->stop) { -make_red: - // turn red - if ((bit & m2) == 0) continue; - } else { - // turn green - if ((bit & m2) != 0) continue; - } - - /* Update signals on the other side of this exit-combo signal; it changed. */ - if (IsPresignalExit(tile)) { - if (ssd->cur_stack != NUM_SSD_STACK) { - ssd->next_tile[ssd->cur_stack] = tile; - ssd->next_dir[ssd->cur_stack] = _dir_from_track[ssd->bit[i]]; - ssd->cur_stack++; - } else { - DEBUG(misc, 0, "NUM_SSD_STACK too small"); /// @todo WTF is this??? - } - } - - // it changed, so toggle it - _m[tile].m2 = m2 ^ bit; - MarkTileDirtyByTile(tile); - } -} - - -bool UpdateSignalsOnSegment(TileIndex tile, DiagDirection direction) -{ - SetSignalsData ssd; - int result = -1; - - ssd.cur_stack = 0; - - for (;;) { - // go through one segment and update all signals pointing into that segment. - ssd.cur = ssd.presignal_exits = ssd.presignal_exits_free = 0; - ssd.has_presignal = false; - - FollowTrack(tile, 0xC000 | TRANSPORT_RAIL, direction, SetSignalsEnumProc, SetSignalsAfterProc, &ssd); - ChangeSignalStates(&ssd); - - // remember the result only for the first iteration. - if (result < 0) { - // stay in depot while segment is occupied or while all presignal exits are blocked - result = ssd.stop || (ssd.presignal_exits > 0 && ssd.presignal_exits_free == 0); - } - - // if any exit signals were changed, we need to keep going to modify the stuff behind those. - if (ssd.cur_stack == 0) break; - - // one or more exit signals were changed, so we need to update another segment too. - tile = ssd.next_tile[--ssd.cur_stack]; - direction = ssd.next_dir[ssd.cur_stack]; - } - - return result != 0; -} - -void SetSignalsOnBothDir(TileIndex tile, byte track) -{ - static const DiagDirection _search_dir_1[] = { - DIAGDIR_NE, DIAGDIR_SE, DIAGDIR_NE, DIAGDIR_SE, DIAGDIR_SW, DIAGDIR_SE - }; - static const DiagDirection _search_dir_2[] = { - DIAGDIR_SW, DIAGDIR_NW, DIAGDIR_NW, DIAGDIR_SW, DIAGDIR_NW, DIAGDIR_NE - }; - - UpdateSignalsOnSegment(tile, _search_dir_1[track]); - UpdateSignalsOnSegment(tile, _search_dir_2[track]); -} - -static uint GetSlopeZ_Track(TileIndex tile, uint x, uint y) -{ - uint z; - Slope tileh = GetTileSlope(tile, &z); - - if (tileh == SLOPE_FLAT) return z; - if (IsPlainRailTile(tile)) { - uint f = GetRailFoundation(tileh, GetTrackBits(tile)); - - if (f != 0) { - if (IsSteepSlope(tileh)) { - z += TILE_HEIGHT; - } else if (f < 15) { - return z + TILE_HEIGHT; // leveled foundation - } - tileh = _inclined_tileh[f - 15]; // inclined foundation - } - return z + GetPartialZ(x & 0xF, y & 0xF, tileh); - } else { - return z + TILE_HEIGHT; - } -} - -static Slope GetSlopeTileh_Track(TileIndex tile, Slope tileh) -{ - if (tileh == SLOPE_FLAT) return SLOPE_FLAT; - if (IsPlainRailTile(tile)) { - uint f = GetRailFoundation(tileh, GetTrackBits(tile)); - - if (f == 0) return tileh; - if (f < 15) return SLOPE_FLAT; // leveled foundation - return _inclined_tileh[f - 15]; // inclined foundation - } else { - return SLOPE_FLAT; - } -} - -static void GetAcceptedCargo_Track(TileIndex tile, AcceptedCargo ac) -{ - /* not used */ -} - -static void AnimateTile_Track(TileIndex tile) -{ - /* not used */ -} - -static void TileLoop_Track(TileIndex tile) -{ - RailGroundType old_ground = GetRailGroundType(tile); - RailGroundType new_ground; - - switch (_opt.landscape) { - case LT_HILLY: - if (GetTileZ(tile) > _opt.snow_line) { - new_ground = RAIL_GROUND_ICE_DESERT; - goto set_ground; - } - break; - - case LT_DESERT: - if (GetTropicZone(tile) == TROPICZONE_DESERT) { - new_ground = RAIL_GROUND_ICE_DESERT; - goto set_ground; - } - break; - } - - if (!IsPlainRailTile(tile)) return; - - new_ground = RAIL_GROUND_GRASS; - - if (old_ground != RAIL_GROUND_BARREN) { /* wait until bottom is green */ - /* determine direction of fence */ - TrackBits rail = GetTrackBits(tile); - - switch (rail) { - case TRACK_BIT_UPPER: new_ground = RAIL_GROUND_FENCE_HORIZ1; break; - case TRACK_BIT_LOWER: new_ground = RAIL_GROUND_FENCE_HORIZ2; break; - case TRACK_BIT_LEFT: new_ground = RAIL_GROUND_FENCE_VERT1; break; - case TRACK_BIT_RIGHT: new_ground = RAIL_GROUND_FENCE_VERT2; break; - - default: { - PlayerID owner = GetTileOwner(tile); - - if (rail == (TRACK_BIT_LOWER | TRACK_BIT_RIGHT) || ( - (rail & TRACK_BIT_3WAY_NW) == 0 && - (rail & TRACK_BIT_X) - )) { - TileIndex n = tile + TileDiffXY(0, -1); - TrackBits nrail = GetTrackBits(n); - - if (!IsTileType(n, MP_RAILWAY) || - !IsTileOwner(n, owner) || - nrail == TRACK_BIT_UPPER || - nrail == TRACK_BIT_LEFT) { - new_ground = RAIL_GROUND_FENCE_NW; - } - } - - if (rail == (TRACK_BIT_UPPER | TRACK_BIT_LEFT) || ( - (rail & TRACK_BIT_3WAY_SE) == 0 && - (rail & TRACK_BIT_X) - )) { - TileIndex n = tile + TileDiffXY(0, 1); - TrackBits nrail = GetTrackBits(n); - - if (!IsTileType(n, MP_RAILWAY) || - !IsTileOwner(n, owner) || - nrail == TRACK_BIT_LOWER || - nrail == TRACK_BIT_RIGHT) { - new_ground = (new_ground == RAIL_GROUND_FENCE_NW) ? - RAIL_GROUND_FENCE_SENW : RAIL_GROUND_FENCE_SE; - } - } - - if (rail == (TRACK_BIT_LOWER | TRACK_BIT_LEFT) || ( - (rail & TRACK_BIT_3WAY_NE) == 0 && - (rail & TRACK_BIT_Y) - )) { - TileIndex n = tile + TileDiffXY(-1, 0); - TrackBits nrail = GetTrackBits(n); - - if (!IsTileType(n, MP_RAILWAY) || - !IsTileOwner(n, owner) || - nrail == TRACK_BIT_UPPER || - nrail == TRACK_BIT_RIGHT) { - new_ground = RAIL_GROUND_FENCE_NE; - } - } - - if (rail == (TRACK_BIT_UPPER | TRACK_BIT_RIGHT) || ( - (rail & TRACK_BIT_3WAY_SW) == 0 && - (rail & TRACK_BIT_Y) - )) { - TileIndex n = tile + TileDiffXY(1, 0); - TrackBits nrail = GetTrackBits(n); - - if (!IsTileType(n, MP_RAILWAY) || - !IsTileOwner(n, owner) || - nrail == TRACK_BIT_LOWER || - nrail == TRACK_BIT_LEFT) { - new_ground = (new_ground == RAIL_GROUND_FENCE_NE) ? - RAIL_GROUND_FENCE_NESW : RAIL_GROUND_FENCE_SW; - } - } - break; - } - } - } - -set_ground: - if (old_ground != new_ground) { - SetRailGroundType(tile, new_ground); - MarkTileDirtyByTile(tile); - } -} - - -static uint32 GetTileTrackStatus_Track(TileIndex tile, TransportType mode) -{ - byte a; - uint16 b; - - if (mode != TRANSPORT_RAIL) return 0; - - if (IsPlainRailTile(tile)) { - TrackBits rails = GetTrackBits(tile); - uint32 ret = rails * 0x101; - - if (HasSignals(tile)) { - a = _m[tile].m3; - b = _m[tile].m2; - - b &= a; - - /* When signals are not present (in neither - * direction), we pretend them to be green. (So if - * signals are only one way, the other way will - * implicitely become `red' */ - if ((a & 0xC0) == 0) b |= 0xC0; - if ((a & 0x30) == 0) b |= 0x30; - - if ((b & 0x80) == 0) ret |= 0x10070000; - if ((b & 0x40) == 0) ret |= 0x07100000; - if ((b & 0x20) == 0) ret |= 0x20080000; - if ((b & 0x10) == 0) ret |= 0x08200000; - } else { - if (rails == TRACK_BIT_CROSS) ret |= 0x40; - } - return ret; - } else { - if (GetRailTileSubtype(tile) == RAIL_SUBTYPE_DEPOT) { - return AxisToTrackBits(DiagDirToAxis(GetRailDepotDirection(tile))) * 0x101; - } else { - return GetRailWaypointBits(tile) * 0x101; - } - } -} - -static void ClickTile_Track(TileIndex tile) -{ - if (IsTileDepotType(tile, TRANSPORT_RAIL)) { - ShowDepotWindow(tile, VEH_Train); - } else if (IsRailWaypoint(tile)) { - ShowRenameWaypointWindow(GetWaypointByTile(tile)); - } -} - -static void GetTileDesc_Track(TileIndex tile, TileDesc *td) -{ - td->owner = GetTileOwner(tile); - switch (GetRailTileType(tile)) { - case RAIL_TILE_NORMAL: - td->str = STR_1021_RAILROAD_TRACK; - break; - - case RAIL_TILE_SIGNALS: { - const StringID signal_type[] = { - STR_RAILROAD_TRACK_WITH_NORMAL_SIGNALS, - STR_RAILROAD_TRACK_WITH_PRESIGNALS, - STR_RAILROAD_TRACK_WITH_EXITSIGNALS, - STR_RAILROAD_TRACK_WITH_COMBOSIGNALS - }; - - td->str = signal_type[GetSignalType(tile)]; - break; - } - - case RAIL_TILE_DEPOT_WAYPOINT: - default: - td->str = (GetRailTileSubtype(tile) == RAIL_SUBTYPE_DEPOT) ? - STR_1023_RAILROAD_TRAIN_DEPOT : STR_LANDINFO_WAYPOINT; - break; - } -} - -static void ChangeTileOwner_Track(TileIndex tile, PlayerID old_player, PlayerID new_player) -{ - if (!IsTileOwner(tile, old_player)) return; - - if (new_player != PLAYER_SPECTATOR) { - SetTileOwner(tile, new_player); - } else { - DoCommand(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR); - } -} - -static const byte _fractcoords_behind[4] = { 0x8F, 0x8, 0x80, 0xF8 }; -static const byte _fractcoords_enter[4] = { 0x8A, 0x48, 0x84, 0xA8 }; -static const byte _deltacoord_leaveoffset[8] = { - -1, 0, 1, 0, /* x */ - 0, 1, 0, -1 /* y */ -}; - -static uint32 VehicleEnter_Track(Vehicle *v, TileIndex tile, int x, int y) -{ - byte fract_coord; - byte fract_coord_leave; - DiagDirection dir; - int length; - - // this routine applies only to trains in depot tiles - if (v->type != VEH_Train || !IsTileDepotType(tile, TRANSPORT_RAIL)) return 0; - - /* depot direction */ - dir = GetRailDepotDirection(tile); - - /* calculate the point where the following wagon should be activated */ - /* this depends on the length of the current vehicle */ - length = v->u.rail.cached_veh_length; - - fract_coord_leave = - ((_fractcoords_enter[dir] & 0x0F) + // x - (length + 1) * _deltacoord_leaveoffset[dir]) + - (((_fractcoords_enter[dir] >> 4) + // y - ((length + 1) * _deltacoord_leaveoffset[dir+4])) << 4); - - fract_coord = (x & 0xF) + ((y & 0xF) << 4); - - if (_fractcoords_behind[dir] == fract_coord) { - /* make sure a train is not entering the tile from behind */ - return 8; - } else if (_fractcoords_enter[dir] == fract_coord) { - if (DiagDirToDir(ReverseDiagDir(dir)) == v->direction) { - /* enter the depot */ - v->u.rail.track = 0x80, - v->vehstatus |= VS_HIDDEN; /* hide it */ - v->direction = ReverseDir(v->direction); - if (v->next == NULL) VehicleEnterDepot(v); - v->tile = tile; - - InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile); - return 4; - } - } else if (fract_coord_leave == fract_coord) { - if (DiagDirToDir(dir) == v->direction) { - /* leave the depot? */ - if ((v = v->next) != NULL) { - v->vehstatus &= ~VS_HIDDEN; - v->u.rail.track = (DiagDirToAxis(dir) == AXIS_X ? 1 : 2); - } - } - } - - return 0; -} - - -const TileTypeProcs _tile_type_rail_procs = { - DrawTile_Track, /* draw_tile_proc */ - GetSlopeZ_Track, /* get_slope_z_proc */ - ClearTile_Track, /* clear_tile_proc */ - GetAcceptedCargo_Track, /* get_accepted_cargo_proc */ - GetTileDesc_Track, /* get_tile_desc_proc */ - GetTileTrackStatus_Track, /* get_tile_track_status_proc */ - ClickTile_Track, /* click_tile_proc */ - AnimateTile_Track, /* animate_tile_proc */ - TileLoop_Track, /* tile_loop_clear */ - ChangeTileOwner_Track, /* change_tile_owner_clear */ - NULL, /* get_produced_cargo_proc */ - VehicleEnter_Track, /* vehicle_enter_tile_proc */ - GetSlopeTileh_Track, /* get_slope_tileh_proc */ -};