/* * This file is part of OpenTTD. * 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. * 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. * 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 . */ /** @file rail_cmd.cpp Handling of rail tiles. */ #include "stdafx.h" #include "cmd_helper.h" #include "viewport_func.h" #include "command_func.h" #include "depot_base.h" #include "pathfinder/yapf/yapf_cache.h" #include "newgrf_debug.h" #include "newgrf_railtype.h" #include "train.h" #include "autoslope.h" #include "water.h" #include "tunnelbridge_map.h" #include "bridge_signal_map.h" #include "vehicle_func.h" #include "sound_func.h" #include "tunnelbridge.h" #include "elrail_func.h" #include "town.h" #include "pbs.h" #include "company_base.h" #include "core/backup_type.hpp" #include "date_func.h" #include "core/container_func.hpp" #include "strings_func.h" #include "company_gui.h" #include "object_map.h" #include "tracerestrict.h" #include "programmable_signals.h" #include "spritecache.h" #include "core/container_func.hpp" #include "news_func.h" #include "scope.h" #include "newgrf_newsignals.h" #include "pathfinder/water_regions.h" #include "table/strings.h" #include "table/railtypes.h" #include "table/track_land.h" #include #include "safeguards.h" /** Helper type for lists/vectors of trains */ typedef std::vector TrainList; RailTypeInfo _railtypes[RAILTYPE_END]; std::vector _sorted_railtypes; TileIndex _rail_track_endtile; ///< The end of a rail track; as hidden return from the rail build/remove command for GUI purposes. RailTypes _railtypes_hidden_mask; /** * Reset all rail type information to its default values. */ void ResetRailTypes() { static_assert(lengthof(_original_railtypes) <= lengthof(_railtypes)); auto insert = std::copy(std::begin(_original_railtypes), std::end(_original_railtypes), std::begin(_railtypes)); std::fill(insert, std::end(_railtypes), RailTypeInfo{}); _railtypes_hidden_mask = RAILTYPES_NONE; } void ResolveRailTypeGUISignalSprites(RailTypeInfo *rti, uint8_t style, PalSpriteID signals[SIGTYPE_END][2][2]) { /* Array of default GUI signal sprite numbers. */ const SpriteID _signal_lookup[2][SIGTYPE_END] = { {SPR_IMG_SIGNAL_ELECTRIC_NORM, SPR_IMG_SIGNAL_ELECTRIC_ENTRY, SPR_IMG_SIGNAL_ELECTRIC_EXIT, SPR_IMG_SIGNAL_ELECTRIC_COMBO, SPR_IMG_SIGNAL_ELECTRIC_PBS, SPR_IMG_SIGNAL_ELECTRIC_PBS_OWAY, SPR_IMG_SIGNAL_ELECTRIC_PROG, SPR_IMG_SIGNAL_ELECTRIC_NO_ENTRY}, {SPR_IMG_SIGNAL_SEMAPHORE_NORM, SPR_IMG_SIGNAL_SEMAPHORE_ENTRY, SPR_IMG_SIGNAL_SEMAPHORE_EXIT, SPR_IMG_SIGNAL_SEMAPHORE_COMBO, SPR_IMG_SIGNAL_SEMAPHORE_PBS, SPR_IMG_SIGNAL_SEMAPHORE_PBS_OWAY, SPR_IMG_SIGNAL_SEMAPHORE_PROG, SPR_IMG_SIGNAL_SEMAPHORE_NO_ENTRY}, }; auto default_sprite = [&](SignalVariant var, SignalType type) -> SpriteID { SpriteID spr = _signal_lookup[var][type]; if (_settings_client.gui.show_all_signal_default == SSDM_ON) { if (type == SIGTYPE_PROG) { spr += SPR_DUP_PROGSIGNAL_BASE - SPR_PROGSIGNAL_BASE; } else if (type == SIGTYPE_NO_ENTRY) { spr += SPR_DUP_EXTRASIGNAL_BASE - SPR_EXTRASIGNAL_BASE; } else if (var == SIG_ELECTRIC && type == SIGTYPE_BLOCK) { spr += SPR_DUP_ORIGINAL_SIGNALS_BASE - SPR_ORIGINAL_SIGNALS_BASE; } else { spr += SPR_DUP_SIGNALS_BASE - SPR_SIGNALS_BASE; } } return spr; }; for (SignalType type = SIGTYPE_BLOCK; type < SIGTYPE_END; type = (SignalType)(type + 1)) { for (SignalVariant var = SIG_ELECTRIC; var <= SIG_SEMAPHORE; var = (SignalVariant)(var + 1)) { PalSpriteID red = GetCustomSignalSprite(rti, INVALID_TILE, type, var, 0, { CSSC_GUI }, style).sprite; if (red.sprite != 0) { signals[type][var][0] = { red.sprite + SIGNAL_TO_SOUTH, red.pal }; } else { signals[type][var][0] = { default_sprite(var, type), PAL_NONE }; } if (type == SIGTYPE_NO_ENTRY) { signals[type][var][1] = signals[type][var][0]; continue; } PalSpriteID green = GetCustomSignalSprite(rti, INVALID_TILE, type, var, 255, { CSSC_GUI }, style).sprite; if (green.sprite != 0) { signals[type][var][1] = { green.sprite + SIGNAL_TO_SOUTH, green.pal }; } else { signals[type][var][1] = { default_sprite(var, type) + 1, PAL_NONE }; } } } } void ResolveRailTypeGUISprites(RailTypeInfo *rti) { SpriteID cursors_base = GetCustomRailSprite(rti, INVALID_TILE, RTSG_CURSORS); if (cursors_base != 0) { rti->gui_sprites.build_ns_rail = cursors_base + 0; rti->gui_sprites.build_x_rail = cursors_base + 1; rti->gui_sprites.build_ew_rail = cursors_base + 2; rti->gui_sprites.build_y_rail = cursors_base + 3; rti->gui_sprites.auto_rail = cursors_base + 4; rti->gui_sprites.build_depot = cursors_base + 5; rti->gui_sprites.build_tunnel = cursors_base + 6; rti->gui_sprites.convert_rail = cursors_base + 7; rti->cursor.rail_ns = cursors_base + 8; rti->cursor.rail_swne = cursors_base + 9; rti->cursor.rail_ew = cursors_base + 10; rti->cursor.rail_nwse = cursors_base + 11; rti->cursor.autorail = cursors_base + 12; rti->cursor.depot = cursors_base + 13; rti->cursor.tunnel = cursors_base + 14; rti->cursor.convert = cursors_base + 15; } ResolveRailTypeGUISignalSprites(rti, 0, rti->gui_sprites.signals); } /** * Compare railtypes based on their sorting order. * @param first The railtype to compare to. * @param second The railtype to compare. * @return True iff the first should be sorted before the second. */ static bool CompareRailTypes(const RailType &first, const RailType &second) { if (_settings_client.gui.sort_track_types_by_speed) { RailType rt[2] = { first, second }; uint sort_value[2]; for (int i = 0; i < 2; ++i) { // Last sort by speed sort_value[i] = (GetRailTypeInfo(rt[i])->max_speed != 0) ? GetRailTypeInfo(rt[i])->max_speed : UINT16_MAX; // Inside those categories filter by compatibility with eachother. if (!HasPowerOnRail(rt[i], rt[(i + 1) % 2])) { sort_value[i] += (1 << 16); } // We sort by Rail, Electric and others if (!HasPowerOnRail(rt[i], RAILTYPE_RAIL)) { sort_value[i] += (1 << 17); if (!HasPowerOnRail(rt[i], RAILTYPE_ELECTRIC)) { sort_value[i] += (1 << 18); if (!HasPowerOnRail(rt[i], RAILTYPE_MONO) && HasPowerOnRail(rt[i], RAILTYPE_MAGLEV)) { sort_value[i] += (1 << 19); } } } // Then Mono if (HasPowerOnRail(rt[i], RAILTYPE_MONO)) { sort_value[i] += (1 << 20); } // Maglev is second last if (HasPowerOnRail(rt[i], RAILTYPE_MAGLEV)) { sort_value[i] += (1 << 21); } // All no-speed tracks (like planning and lifted) go to the end if (GetRailTypeInfo(rt[i])->max_speed == 0) { sort_value[i] += (1 << 22); } } return std::tie(sort_value[0], first) < std::tie(sort_value[1], second); } else { return std::tie(GetRailTypeInfo(first)->sorting_order, first) < std::tie(GetRailTypeInfo(second)->sorting_order, second); } } void SortRailTypes() { std::sort(_sorted_railtypes.begin(), _sorted_railtypes.end(), CompareRailTypes); } void UpdateRailGuiSprites() { for (RailType rt = RAILTYPE_BEGIN; rt != RAILTYPE_END; rt++) { ResolveRailTypeGUISprites(&_railtypes[rt]); } for (uint8_t style = 0; style < _num_new_signal_styles; style++) { ResolveRailTypeGUISignalSprites(nullptr, style + 1, _new_signal_styles[style].signals); } } /** * Resolve sprites of custom rail types */ void InitRailTypes() { UpdateRailGuiSprites(); _sorted_railtypes.clear(); for (RailType rt = RAILTYPE_BEGIN; rt != RAILTYPE_END; rt++) { bool hidden = HasBit(_railtypes[rt].flags, RTF_HIDDEN); if (hidden) SetBit(_railtypes_hidden_mask, rt); if (_railtypes[rt].label != 0 && !hidden) { _sorted_railtypes.push_back(rt); } } SortRailTypes(); for (RailType rt = RAILTYPE_BEGIN; rt != RAILTYPE_END; rt++) { _railtypes[rt].all_compatible_railtypes = _railtypes[rt].compatible_railtypes; } for (RailType rt = RAILTYPE_BEGIN; rt != RAILTYPE_END; rt++) { RailTypes compatible = _railtypes[rt].all_compatible_railtypes; RailTypes to_check = compatible; while (to_check) { RailType i = (RailType)FindFirstBit(to_check); to_check = KillFirstBit(to_check); RailTypes new_types = _railtypes[i].compatible_railtypes & (~compatible); to_check |= new_types; compatible |= new_types; } RailTypes to_update = compatible; while (to_update) { RailType i = (RailType)FindFirstBit(to_update); to_update = KillFirstBit(to_update); _railtypes[i].all_compatible_railtypes = compatible; } } } /** * Allocate a new rail type label */ RailType AllocateRailType(RailTypeLabel label) { for (RailType rt = RAILTYPE_BEGIN; rt != RAILTYPE_END; rt++) { RailTypeInfo *rti = &_railtypes[rt]; if (rti->label == 0) { /* Set up new rail type */ *rti = _original_railtypes[RAILTYPE_RAIL]; rti->label = label; rti->alternate_labels.clear(); /* Make us compatible with ourself. */ rti->powered_railtypes = (RailTypes)(1LL << rt); rti->compatible_railtypes = (RailTypes)(1LL << rt); /* We also introduce ourself. */ rti->introduces_railtypes = (RailTypes)(1LL << rt); /* Default sort order; order of allocation, but with some * offsets so it's easier for NewGRF to pick a spot without * changing the order of other (original) rail types. * The << is so you can place other railtypes in between the * other railtypes, the 7 is to be able to place something * before the first (default) rail type. */ rti->sorting_order = rt << 4 | 7; if (label == 'TELE' || label == 'PIPE' || label == 'WIRE') SetBit(rti->ctrl_flags, RTCF_NOREALISTICBRAKING); return rt; } } return INVALID_RAILTYPE; } static const uint8_t _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 */ /** * Tests if a vehicle interacts with the specified track. * All track bits interact except parallel #TRACK_BIT_HORZ or #TRACK_BIT_VERT. * * @param tile The tile. * @param track The track. * @return Succeeded command (no train found), or a failed command (a train was found). */ static CommandCost EnsureNoTrainOnTrack(TileIndex tile, Track track) { TrackBits rail_bits = TrackToTrackBits(track); return EnsureNoTrainOnTrackBits(tile, rail_bits); } struct CheckTrackCombinationRailTypeChanges { RailType convert_to = INVALID_RAILTYPE; RailType primary = INVALID_RAILTYPE; RailType secondary = INVALID_RAILTYPE; }; /** * Check that the new track bits may be built. * @param tile %Tile to build on. * @param to_build New track bits. * @param railtype New rail type. * @param disable_dual_rail_type Whether dual rail types are disabled. * @param flags Flags of the operation. * @return Succeeded or failed command. */ static CommandCost CheckTrackCombination(TileIndex tile, TrackBits to_build, RailType railtype, bool disable_dual_rail_type, DoCommandFlag flags, bool auto_remove_signals, CheckTrackCombinationRailTypeChanges &changes) { if (!IsPlainRail(tile)) return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION); /* So, we have a tile with tracks on it (and possibly signals). Let's see * what tracks first */ TrackBits current = GetTrackBits(tile); // The current track layout. TrackBits future = current | to_build; // The track layout we want to build. /* Are we really building something new? */ if (current == future) { /* Nothing new is being built */ if (IsCompatibleRail(GetTileRailTypeByTrackBit(tile, to_build), railtype)) { return_cmd_error(STR_ERROR_ALREADY_BUILT); } else { return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION); } } /* These combinations are always allowed, unless disable_dual_rail_type is set */ if ((future == TRACK_BIT_HORZ || future == TRACK_BIT_VERT) && !disable_dual_rail_type) { if (flags & DC_EXEC) { if (to_build & TRACK_BIT_RT_1) { RailType current_rt = GetRailType(tile); changes.primary = railtype; changes.secondary = current_rt; } else { changes.secondary = railtype; } } return CommandCost(); } /* Let's see if we may build this */ if (HasSignals(tile) && !auto_remove_signals) { /* If we are not allowed to overlap (flag is on for ai companies or we have * signals on the tile), check that */ if (future != TRACK_BIT_HORZ && future != TRACK_BIT_VERT) { return_cmd_error(STR_ERROR_MUST_REMOVE_SIGNALS_FIRST); } } RailType rt = INVALID_RAILTYPE; if (current == TRACK_BIT_HORZ || current == TRACK_BIT_VERT) { RailType rt1 = GetRailType(tile); if (!IsCompatibleRail(rt1, railtype)) return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION); RailType rt2 = GetSecondaryRailType(tile); if (!IsCompatibleRail(rt2, railtype)) return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION); if (rt1 != rt2) { /* Two different railtypes present */ if ((railtype == rt1 || HasPowerOnRail(rt1, railtype)) && (railtype == rt2 || HasPowerOnRail(rt2, railtype))) { rt = railtype; } else if ((railtype == rt1 || HasPowerOnRail(railtype, rt1)) && HasPowerOnRail(rt2, rt1)) { rt = railtype = rt1; } else if ((railtype == rt2 || HasPowerOnRail(railtype, rt2)) && HasPowerOnRail(rt1, rt2)) { rt = railtype = rt2; } else { return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION); } } else if (railtype == rt1) { /* Nothing to do */ rt = INVALID_RAILTYPE; } else if (HasPowerOnRail(railtype, rt1)) { /* Try to keep existing railtype */ railtype = rt1; rt = INVALID_RAILTYPE; } else if (HasPowerOnRail(rt1, railtype)) { rt = railtype; } else { return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION); } } else { rt = GetRailType(tile); if (railtype == rt) { /* Nothing to do */ rt = INVALID_RAILTYPE; } else if (!IsCompatibleRail(rt, railtype)) { return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION); } else if (HasPowerOnRail(railtype, rt)) { /* Try to keep existing railtype */ railtype = rt; rt = INVALID_RAILTYPE; } else if (HasPowerOnRail(rt, railtype)) { rt = railtype; } else { return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION); } } CommandCost ret; if (rt != INVALID_RAILTYPE) { ret = DoCommand(tile, tile, rt, flags & ~DC_EXEC, CMD_CONVERT_RAIL); if (ret.Failed()) return ret; changes.convert_to = rt; } if (flags & DC_EXEC) { changes.primary = railtype; changes.secondary = railtype; } return ret; } /** Valid TrackBits on a specific (non-steep)-slope without foundation */ static const TrackBits _valid_tracks_without_foundation[15] = { TRACK_BIT_ALL, TRACK_BIT_RIGHT, TRACK_BIT_UPPER, TRACK_BIT_X, TRACK_BIT_LEFT, TRACK_BIT_NONE, TRACK_BIT_Y, TRACK_BIT_LOWER, TRACK_BIT_LOWER, TRACK_BIT_Y, TRACK_BIT_NONE, TRACK_BIT_LEFT, TRACK_BIT_X, TRACK_BIT_UPPER, TRACK_BIT_RIGHT, }; /** Valid TrackBits on a specific (non-steep)-slope with leveled foundation */ static const TrackBits _valid_tracks_on_leveled_foundation[15] = { TRACK_BIT_NONE, 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 }; /** * Checks if a track combination is valid on a specific slope and returns the needed foundation. * * @param tileh Tile slope. * @param bits Trackbits. * @return Needed foundation or FOUNDATION_INVALID if track/slope combination is not allowed. */ Foundation GetRailFoundation(Slope tileh, TrackBits bits) { if (bits == TRACK_BIT_NONE) return FOUNDATION_NONE; if (IsSteepSlope(tileh)) { /* Test for inclined foundations */ if (bits == TRACK_BIT_X) return FOUNDATION_INCLINED_X; if (bits == TRACK_BIT_Y) return FOUNDATION_INCLINED_Y; /* Get higher track */ Corner highest_corner = GetHighestSlopeCorner(tileh); TrackBits higher_track = CornerToTrackBits(highest_corner); /* Only higher track? */ if (bits == higher_track) return HalftileFoundation(highest_corner); /* Overlap with higher track? */ if (TracksOverlap(bits | higher_track)) return FOUNDATION_INVALID; /* either lower track or both higher and lower track */ return ((bits & higher_track) != 0 ? FOUNDATION_STEEP_BOTH : FOUNDATION_STEEP_LOWER); } else { if ((~_valid_tracks_without_foundation[tileh] & bits) == 0) return FOUNDATION_NONE; bool valid_on_leveled = ((~_valid_tracks_on_leveled_foundation[tileh] & bits) == 0); Corner track_corner; switch (bits) { case TRACK_BIT_LEFT: track_corner = CORNER_W; break; case TRACK_BIT_LOWER: track_corner = CORNER_S; break; case TRACK_BIT_RIGHT: track_corner = CORNER_E; break; case TRACK_BIT_UPPER: track_corner = CORNER_N; break; case TRACK_BIT_HORZ: if (tileh == SLOPE_N) return HalftileFoundation(CORNER_N); if (tileh == SLOPE_S) return HalftileFoundation(CORNER_S); return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID); case TRACK_BIT_VERT: if (tileh == SLOPE_W) return HalftileFoundation(CORNER_W); if (tileh == SLOPE_E) return HalftileFoundation(CORNER_E); return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID); case TRACK_BIT_X: if (IsSlopeWithOneCornerRaised(tileh)) return FOUNDATION_INCLINED_X; return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID); case TRACK_BIT_Y: if (IsSlopeWithOneCornerRaised(tileh)) return FOUNDATION_INCLINED_Y; return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID); default: return (valid_on_leveled ? FOUNDATION_LEVELED : FOUNDATION_INVALID); } /* Single diagonal track */ /* Track must be at least valid on leveled foundation */ if (!valid_on_leveled) return FOUNDATION_INVALID; /* If slope has three raised corners, build leveled foundation */ if (IsSlopeWithThreeCornersRaised(tileh)) return FOUNDATION_LEVELED; /* If neighboured corners of track_corner are lowered, build halftile foundation */ if ((tileh & SlopeWithThreeCornersRaised(OppositeCorner(track_corner))) == SlopeWithOneCornerRaised(track_corner)) return HalftileFoundation(track_corner); /* else special anti-zig-zag foundation */ return SpecialRailFoundation(track_corner); } } /** * Tests if a track can be build on a tile. * * @param tileh Tile slope. * @param rail_bits Tracks to build. * @param existing Tracks already built. * @param tile Tile (used for water test) * @return Error message or cost for foundation building. */ static CommandCost CheckRailSlope(Slope tileh, TrackBits rail_bits, TrackBits existing, TileIndex tile) { /* don't allow building on the lower side of a coast */ if (GetFloodingBehaviour(tile) != FLOOD_NONE) { if (!IsSteepSlope(tileh) && ((~_valid_tracks_on_leveled_foundation[tileh] & (rail_bits | existing)) != 0)) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER); } Foundation f_new = GetRailFoundation(tileh, rail_bits | existing); /* check track/slope combination */ if ((f_new == FOUNDATION_INVALID) || ((f_new != FOUNDATION_NONE) && (!_settings_game.construction.build_on_slopes))) { return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION); } Foundation f_old = GetRailFoundation(tileh, existing); return CommandCost(EXPENSES_CONSTRUCTION, f_new != f_old ? _price[PR_BUILD_FOUNDATION] : (Money)0); } bool IsValidFlatRailBridgeHeadTrackBits(Slope normalised_slope, DiagDirection bridge_direction, TrackBits tracks) { /* bridge_direction c1 c2 * 0 0 1 * 1 0 3 * 2 2 3 * 3 2 1 */ const Corner c1 = (Corner) (bridge_direction & 2); const Corner c2 = (Corner) (((bridge_direction + 1) & 2) + 1); auto test_corner = [&](Corner c) -> bool { if (normalised_slope & SlopeWithOneCornerRaised(c)) return true; Slope effective_slope = normalised_slope | SlopeWithOneCornerRaised(OppositeCorner(c)); assert(effective_slope < lengthof(_valid_tracks_on_leveled_foundation)); return (_valid_tracks_on_leveled_foundation[effective_slope] & tracks) == tracks; }; return test_corner(c1) && test_corner(c2); } /* 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 flags operation to perform * @param p1 railtype of being built piece (normal, mono, maglev) * @param p2 various bitstuffed elements * - (bit 0- 2) - track-orientation, valid values: 0-5 (@see Track) * - (bit 3) - 0 = error on signal in the way, 1 = auto remove signals when in the way * - (bit 4) - No custom bridge heads * - (bit 5) - No dual rail type * @param text unused * @return the cost of this operation or an error */ CommandCost CmdBuildSingleRail(TileIndex tile, DoCommandFlag flags, uint32_t p1, uint32_t p2, const char *text) { RailType railtype = Extract(p1); Track track = Extract(p2); bool auto_remove_signals = HasBit(p2, 3); bool disable_custom_bridge_heads = HasBit(p2, 4); bool disable_dual_rail_type = HasBit(p2, 5); CommandCost cost(EXPENSES_CONSTRUCTION); _rail_track_endtile = INVALID_TILE; if (!ValParamRailType(railtype) || !ValParamTrackOrientation(track)) return CMD_ERROR; Slope tileh = GetTileSlope(tile); TrackBits trackbit = TrackToTrackBits(track); switch (GetTileType(tile)) { case MP_RAILWAY: { CommandCost ret = CheckTileOwnership(tile); if (ret.Failed()) return ret; if (!IsPlainRail(tile)) return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); // just get appropriate error message CheckTrackCombinationRailTypeChanges changes; ret = CheckTrackCombination(tile, trackbit, railtype, disable_dual_rail_type, flags, auto_remove_signals, changes); if (ret.Succeeded()) { cost.AddCost(ret); ret = EnsureNoTrainOnTrack(tile, track); } if (ret.Failed()) { if (ret.GetErrorMessage() == STR_ERROR_ALREADY_BUILT) _rail_track_endtile = tile; return ret; } ret = CheckRailSlope(tileh, trackbit, GetTrackBits(tile), tile); if (ret.Failed()) return ret; cost.AddCost(ret); if (HasSignals(tile) && TracksOverlap(GetTrackBits(tile) | TrackToTrackBits(track))) { /* If adding the new track causes any overlap, all signals must be removed first */ if (!auto_remove_signals) return_cmd_error(STR_ERROR_MUST_REMOVE_SIGNALS_FIRST); for (Track track_it = TRACK_BEGIN; track_it < TRACK_END; track_it++) { if (HasTrack(tile, track_it) && HasSignalOnTrack(tile, track_it)) { CommandCost ret_remove_signals = DoCommand(tile, track_it, 0, flags, CMD_REMOVE_SIGNALS); if (ret_remove_signals.Failed()) return ret_remove_signals; cost.AddCost(ret_remove_signals); } } } if (flags & DC_EXEC) { if (changes.convert_to != INVALID_RAILTYPE) { /* The cost is already accounted for and a test already done in CheckTrackCombination */ CommandCost ret = DoCommand(tile, tile, changes.convert_to, flags, CMD_CONVERT_RAIL); assert(ret.Succeeded()); } if (changes.primary != INVALID_RAILTYPE) SetRailType(tile, changes.primary); if (changes.secondary != INVALID_RAILTYPE) SetSecondaryRailType(tile, changes.secondary); SetRailGroundType(tile, RAIL_GROUND_BARREN); TrackBits bits = GetTrackBits(tile); TrackBits newbits = bits | trackbit; SetTrackBits(tile, newbits); if (newbits == TRACK_BIT_HORZ || newbits == TRACK_BIT_VERT) { Company::Get(GetTileOwner(tile))->infrastructure.rail[GetPlainRailParallelTrackRailTypeByTrackBit(tile, trackbit)]++; } else { /* Subtract old infrastructure count. */ uint pieces = CountBits(bits); if (TracksOverlap(bits)) pieces *= pieces; Company::Get(GetTileOwner(tile))->infrastructure.rail[GetRailType(tile)] -= pieces; /* Add new infrastructure count. */ pieces = CountBits(newbits); if (TracksOverlap(newbits)) pieces *= pieces; Company::Get(GetTileOwner(tile))->infrastructure.rail[GetRailType(tile)] += pieces; } DirtyCompanyInfrastructureWindows(GetTileOwner(tile)); } break; } case MP_TUNNELBRIDGE: { CommandCost ret = CheckTileOwnership(tile); if (ret.Failed()) return ret; if (disable_custom_bridge_heads || !_settings_game.construction.rail_custom_bridge_heads || !IsFlatRailBridgeHeadTile(tile)) return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); // just get appropriate error message const DiagDirection entrance_dir = GetTunnelBridgeDirection(tile); const TrackBits axial_track = DiagDirToDiagTrackBits(entrance_dir); const TrackBits existing = GetCustomBridgeHeadTrackBits(tile); const TrackBits future = existing | trackbit; const bool secondary_piece = ((future == TRACK_BIT_HORZ || future == TRACK_BIT_VERT) && (future != existing)); if (!secondary_piece && !disable_dual_rail_type) { if (!IsCompatibleRail(GetRailType(tile), railtype)) return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION); if (GetRailType(tile) != railtype && !HasPowerOnRail(railtype, GetRailType(tile))) return_cmd_error(STR_ERROR_CAN_T_CONVERT_RAIL); if (GetSecondaryTunnelBridgeTrackBits(tile) != TRACK_BIT_NONE) { if (!IsCompatibleRail(GetSecondaryRailType(tile), railtype)) return_cmd_error(STR_ERROR_IMPOSSIBLE_TRACK_COMBINATION); if (GetRailType(tile) != railtype && !HasPowerOnRail(railtype, GetSecondaryRailType(tile))) return_cmd_error(STR_ERROR_CAN_T_CONVERT_RAIL); } } if (existing == future) return_cmd_error(STR_ERROR_ALREADY_BUILT); if (IsTunnelBridgeWithSignalSimulation(tile)) { if (future != TRACK_BIT_HORZ && future != TRACK_BIT_VERT) { return_cmd_error(STR_ERROR_MUST_REMOVE_SIGNALS_FIRST); } } if ((trackbit & ~axial_track) && !_settings_game.construction.build_on_slopes) { return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION); } /* Steep slopes behave the same as slopes with one corner raised. */ const Slope normalised_tileh = IsSteepSlope(tileh) ? SlopeWithOneCornerRaised(GetHighestSlopeCorner(tileh)) : tileh; if (!IsValidFlatRailBridgeHeadTrackBits(normalised_tileh, GetTunnelBridgeDirection(tile), future)) { return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION); } const TileIndex other_end = GetOtherTunnelBridgeEnd(tile); if (!secondary_piece) { ret = TunnelBridgeIsFree(tile, other_end); if (ret.Failed()) return ret; } if (flags & DC_EXEC) { SubtractRailTunnelBridgeInfrastructure(tile, other_end); SetCustomBridgeHeadTrackBits(tile, future); SetTunnelBridgeGroundBits(tile, IsRailCustomBridgeHead(tile) ? 2 : 0); if (secondary_piece) { SetSecondaryRailType(tile, railtype); } AddRailTunnelBridgeInfrastructure(tile, other_end); DirtyCompanyInfrastructureWindows(_current_company); } break; } case MP_ROAD: { /* Level crossings may only be built on these slopes */ if (!HasBit(VALID_LEVEL_CROSSING_SLOPES, tileh)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION); if (!_settings_game.construction.crossing_with_competitor && _current_company != OWNER_DEITY) { CommandCost ret = CheckTileOwnership(tile); if (ret.Failed()) return ret; } CommandCost ret = EnsureNoVehicleOnGround(tile); if (ret.Failed()) return ret; if (IsNormalRoad(tile)) { if (HasRoadWorks(tile)) return_cmd_error(STR_ERROR_ROAD_WORKS_IN_PROGRESS); if (GetDisallowedRoadDirections(tile) != DRD_NONE) return_cmd_error(STR_ERROR_CROSSING_ON_ONEWAY_ROAD); if (RailNoLevelCrossings(railtype)) return_cmd_error(STR_ERROR_CROSSING_DISALLOWED_RAIL); RoadType roadtype_road = GetRoadTypeRoad(tile); RoadType roadtype_tram = GetRoadTypeTram(tile); if (roadtype_road != INVALID_ROADTYPE && RoadNoLevelCrossing(roadtype_road)) return_cmd_error(STR_ERROR_CROSSING_DISALLOWED_ROAD); if (roadtype_tram != INVALID_ROADTYPE && RoadNoLevelCrossing(roadtype_tram)) return_cmd_error(STR_ERROR_CROSSING_DISALLOWED_ROAD); RoadBits road = GetRoadBits(tile, RTT_ROAD); RoadBits tram = GetRoadBits(tile, RTT_TRAM); if ((track == TRACK_X && ((road | tram) & ROAD_X) == 0) || (track == TRACK_Y && ((road | tram) & ROAD_Y) == 0)) { Owner road_owner = GetRoadOwner(tile, RTT_ROAD); Owner tram_owner = GetRoadOwner(tile, RTT_TRAM); /* Disallow breaking end-of-line of someone else * so trams can still reverse on this tile. */ if (Company::IsValidID(tram_owner) && HasExactlyOneBit(tram)) { ret = CheckOwnership(tram_owner); if (ret.Failed()) return ret; } uint num_new_road_pieces = (road != ROAD_NONE) ? 2 - CountBits(road) : 0; if (num_new_road_pieces > 0) { cost.AddCost(num_new_road_pieces * RoadBuildCost(roadtype_road)); } uint num_new_tram_pieces = (tram != ROAD_NONE) ? 2 - CountBits(tram) : 0; if (num_new_tram_pieces > 0) { cost.AddCost(num_new_tram_pieces * RoadBuildCost(roadtype_tram)); } if (flags & DC_EXEC) { MakeRoadCrossing(tile, road_owner, tram_owner, _current_company, (track == TRACK_X ? AXIS_Y : AXIS_X), railtype, roadtype_road, roadtype_tram, GetTownIndex(tile)); UpdateLevelCrossing(tile, false); MarkDirtyAdjacentLevelCrossingTilesOnAdd(tile, GetCrossingRoadAxis(tile)); Company::Get(_current_company)->infrastructure.rail[railtype] += LEVELCROSSING_TRACKBIT_FACTOR; DirtyCompanyInfrastructureWindows(_current_company); if (num_new_road_pieces > 0 && Company::IsValidID(road_owner)) { assert(roadtype_road != INVALID_ROADTYPE); Company::Get(road_owner)->infrastructure.road[roadtype_road] += num_new_road_pieces; DirtyCompanyInfrastructureWindows(road_owner); } if (num_new_tram_pieces > 0 && Company::IsValidID(tram_owner)) { assert(roadtype_tram != INVALID_ROADTYPE); Company::Get(tram_owner)->infrastructure.road[roadtype_tram] += num_new_tram_pieces; DirtyCompanyInfrastructureWindows(tram_owner); } UpdateRoadCachedOneWayStatesAroundTile(tile); } break; } } if (IsLevelCrossing(tile) && GetCrossingRailBits(tile) == trackbit) { _rail_track_endtile = tile; return_cmd_error(STR_ERROR_ALREADY_BUILT); } [[fallthrough]]; } default: { /* Will there be flat water on the lower halftile? */ bool water_ground = IsTileType(tile, MP_WATER) && IsSlopeWithOneCornerRaised(tileh); CommandCost ret = CheckRailSlope(tileh, trackbit, TRACK_BIT_NONE, tile); if (ret.Failed()) return ret; cost.AddCost(ret); ret = DoCommand(tile, 0, 0, flags | DC_ALLOW_REMOVE_WATER, CMD_LANDSCAPE_CLEAR); if (ret.Failed()) return ret; cost.AddCost(ret); if (water_ground) { cost.AddCost(-_price[PR_CLEAR_WATER]); cost.AddCost(_price[PR_CLEAR_ROUGH]); } if (flags & DC_EXEC) { MakeRailNormal(tile, _current_company, trackbit, railtype); if (water_ground) { SetRailGroundType(tile, RAIL_GROUND_WATER); if (IsPossibleDockingTile(tile)) CheckForDockingTile(tile); } Company::Get(_current_company)->infrastructure.rail[railtype]++; DirtyCompanyInfrastructureWindows(_current_company); } break; } } if (flags & DC_EXEC) { MarkTileDirtyByTile(tile); AddTrackToSignalBuffer(tile, track, _current_company); YapfNotifyTrackLayoutChange(tile, track); } cost.AddCost(RailBuildCost(railtype)); _rail_track_endtile = tile; return cost; } /** * Remove a single piece of track * @param tile tile to remove track from * @param flags operation to perform * @param p1 unused * @param p2 rail orientation * @param text unused * @return the cost of this operation or an error */ CommandCost CmdRemoveSingleRail(TileIndex tile, DoCommandFlag flags, uint32_t p1, uint32_t p2, const char *text) { Track track = Extract(p2); CommandCost cost(EXPENSES_CONSTRUCTION); bool crossing = false; _rail_track_endtile = INVALID_TILE; if (!ValParamTrackOrientation(track)) return CMD_ERROR; TrackBits trackbit = TrackToTrackBits(track); /* Need to read tile owner now because it may change when the rail is removed * Also, in case of floods, _current_company != owner * There may be invalid tiletype even in exec run (when removing long track), * so do not call GetTileOwner(tile) in any case here */ Owner owner = INVALID_OWNER; Train *v = nullptr; switch (GetTileType(tile)) { case MP_ROAD: { if (!IsLevelCrossing(tile) || GetCrossingRailBits(tile) != trackbit) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK); if (_current_company != OWNER_WATER) { CommandCost ret = CheckTileOwnership(tile); if (ret.Failed()) return ret; } if (!(flags & DC_BANKRUPT)) { CommandCost ret = EnsureNoVehicleOnGround(tile); if (ret.Failed()) return ret; } cost.AddCost(RailClearCost(GetRailType(tile))); if (HasReservedTracks(tile, trackbit)) { v = GetTrainForReservation(tile, track); if (v != nullptr) { CommandCost ret = CheckTrainReservationPreventsTrackModification(v); if (ret.Failed()) return ret; } } if (flags & DC_EXEC) { UpdateAdjacentLevelCrossingTilesOnRemove(tile, GetCrossingRoadAxis(tile)); if (v != nullptr) FreeTrainTrackReservation(v); owner = GetTileOwner(tile); Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= LEVELCROSSING_TRACKBIT_FACTOR; DirtyCompanyInfrastructureWindows(owner); MakeRoadNormal(tile, GetCrossingRoadBits(tile), GetRoadTypeRoad(tile), GetRoadTypeTram(tile), GetTownIndex(tile), GetRoadOwner(tile, RTT_ROAD), GetRoadOwner(tile, RTT_TRAM)); DeleteNewGRFInspectWindow(GSF_RAILTYPES, tile); UpdateRoadCachedOneWayStatesAroundTile(tile); } break; } case MP_RAILWAY: { TrackBits present; /* There are no rails present at depots. */ if (!IsPlainRail(tile)) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK); if (_current_company != OWNER_WATER) { CommandCost ret = CheckTileOwnership(tile); if (ret.Failed()) return ret; } CommandCost ret = EnsureNoTrainOnTrack(tile, track); if (ret.Failed()) return ret; present = GetTrackBits(tile); if ((present & trackbit) == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK); if (present == (TRACK_BIT_X | TRACK_BIT_Y)) crossing = true; cost.AddCost(RailClearCost(GetTileRailTypeByTrackBit(tile, trackbit))); if (HasReservedTracks(tile, trackbit)) { v = GetTrainForReservation(tile, track); if (v != nullptr) { CommandCost ret = CheckTrainReservationPreventsTrackModification(v); if (ret.Failed()) return ret; } } /* Charge extra to remove signals on the track, if they are there */ if (HasSignalOnTrack(tile, track)) { CommandCost ret_remove_signals = DoCommand(tile, track, 0, flags, CMD_REMOVE_SIGNALS); if (ret_remove_signals.Failed()) return ret_remove_signals; cost.AddCost(ret_remove_signals); } if (flags & DC_EXEC) { if (v != nullptr) FreeTrainTrackReservation(v); owner = GetTileOwner(tile); if (present == TRACK_BIT_HORZ || present == TRACK_BIT_VERT) { Company::Get(owner)->infrastructure.rail[GetTileRailTypeByTrackBit(tile, trackbit)]--; present ^= trackbit; SetRailType(tile, GetTileRailTypeByTrackBit(tile, present)); } else { /* Subtract old infrastructure count. */ uint pieces = CountBits(present); if (TracksOverlap(present)) pieces *= pieces; Company::Get(owner)->infrastructure.rail[GetRailType(tile)] -= pieces; /* Add new infrastructure count. */ present ^= trackbit; pieces = CountBits(present); if (TracksOverlap(present)) pieces *= pieces; Company::Get(owner)->infrastructure.rail[GetRailType(tile)] += pieces; } DirtyCompanyInfrastructureWindows(owner); if (present == 0) { Slope tileh = GetTileSlope(tile); /* If there is flat water on the lower halftile, convert the tile to shore so the water remains */ if (GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(tileh)) { bool docking = IsDockingTile(tile); MakeShore(tile); SetDockingTile(tile, docking); } else { DoClearSquare(tile); } DeleteNewGRFInspectWindow(GSF_RAILTYPES, tile); } else { SetTrackBits(tile, present); SetTrackReservation(tile, GetRailReservationTrackBits(tile) & present); if (present == TRACK_BIT_HORZ || present == TRACK_BIT_VERT) { SetSecondaryRailType(tile, GetRailType(tile)); } } } break; } case MP_TUNNELBRIDGE: { CommandCost ret = CheckTileOwnership(tile); if (ret.Failed()) return ret; if (!IsFlatRailBridgeHeadTile(tile) || GetCustomBridgeHeadTrackBits(tile) == DiagDirToDiagTrackBits(GetTunnelBridgeDirection(tile))) { return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); // just get appropriate error message } const TrackBits present = GetCustomBridgeHeadTrackBits(tile); if ((present & trackbit) == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK); if (present == (TRACK_BIT_X | TRACK_BIT_Y)) crossing = true; const TrackBits future = present ^ trackbit; if ((GetAcrossBridgePossibleTrackBits(tile) & future) == 0) return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); // just get appropriate error message const TileIndex other_end = GetOtherTunnelBridgeEnd(tile); if (present == TRACK_BIT_HORZ || present == TRACK_BIT_VERT) { ret = EnsureNoTrainOnTrack(tile, track); } else { ret = TunnelBridgeIsFree(tile, other_end); } if (ret.Failed()) return ret; if (HasReservedTracks(tile, trackbit)) { v = GetTrainForReservation(tile, track); if (v != nullptr) { CommandCost ret = CheckTrainReservationPreventsTrackModification(v); if (ret.Failed()) return ret; } } cost.AddCost(RailClearCost(GetTileRailTypeByTrackBit(tile, trackbit))); if (flags & DC_EXEC) { SubtractRailTunnelBridgeInfrastructure(tile, other_end); owner = GetTileOwner(tile); if (v != nullptr) FreeTrainTrackReservation(v); if (future == TRACK_BIT_HORZ || future == TRACK_BIT_VERT) { // Changing to two separate tracks with separate rail types SetSecondaryRailType(tile, GetRailType(tile)); } SetCustomBridgeHeadTrackBits(tile, future); SetTunnelBridgeGroundBits(tile, IsRailCustomBridgeHead(tile) ? 2 : 0); AddRailTunnelBridgeInfrastructure(tile, other_end); DirtyCompanyInfrastructureWindows(_current_company); } break; } default: return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK); } if (flags & DC_EXEC) { /* if we got that far, 'owner' variable is set correctly */ assert(Company::IsValidID(owner)); 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. */ AddTrackToSignalBuffer(tile, TRACK_X, owner); AddTrackToSignalBuffer(tile, TRACK_Y, owner); YapfNotifyTrackLayoutChange(tile, TRACK_X); YapfNotifyTrackLayoutChange(tile, TRACK_Y); } else { AddTrackToSignalBuffer(tile, track, owner); YapfNotifyTrackLayoutChange(tile, track); } if (v != nullptr) TryPathReserve(v, true); } _rail_track_endtile = tile; return cost; } /** * Called from water_cmd if a non-flat rail-tile gets flooded and should be converted to shore. * The function floods the lower halftile, if the tile has a halftile foundation. * * @param t The tile to flood. * @return true if something was flooded. */ bool FloodHalftile(TileIndex t) { assert_tile(IsPlainRailTile(t), t); bool flooded = false; if (GetRailGroundType(t) == RAIL_GROUND_WATER) return flooded; Slope tileh = GetTileSlope(t); TrackBits rail_bits = GetTrackBits(t); if (IsSlopeWithOneCornerRaised(tileh)) { TrackBits lower_track = CornerToTrackBits(OppositeCorner(GetHighestSlopeCorner(tileh))); TrackBits to_remove = lower_track & rail_bits; if (to_remove != 0) { Backup cur_company(_current_company, OWNER_WATER, FILE_LINE); flooded = DoCommand(t, 0, FindFirstBit(to_remove), DC_EXEC, CMD_REMOVE_SINGLE_RAIL).Succeeded(); cur_company.Restore(); if (!flooded) return flooded; // not yet floodable rail_bits = rail_bits & ~to_remove; if (rail_bits == 0) { MakeShore(t); MarkTileDirtyByTile(t); return flooded; } } if (IsNonContinuousFoundation(GetRailFoundation(tileh, rail_bits))) { flooded = true; SetRailGroundType(t, RAIL_GROUND_WATER); MarkTileDirtyByTile(t); } } else { /* Make shore on steep slopes and 'three-corners-raised'-slopes. */ if (ApplyFoundationToSlope(GetRailFoundation(tileh, rail_bits), tileh) == 0) { if (IsSteepSlope(tileh) || IsSlopeWithThreeCornersRaised(tileh)) { flooded = true; SetRailGroundType(t, RAIL_GROUND_WATER); MarkTileDirtyByTile(t, VMDF_NOT_MAP_MODE); } } } return flooded; } 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 CommandCost ValidateAutoDrag(Trackdir *trackdir, TileIndex start, TileIndex end) { int x = TileX(start); int y = TileY(start); int ex = TileX(end); int ey = TileY(end); if (!ValParamTrackOrientation(TrackdirToTrack(*trackdir))) return CMD_ERROR; /* calculate delta x,y from start to end tile */ int dx = ex - x; int dy = ey - y; /* calculate delta x,y for the first direction */ int trdx = _trackdelta[*trackdir].x; int 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 CommandCost(); } /** * Build or remove a stretch of railroad tracks. * @param tile start tile of drag * @param flags operation to perform * @param p1 end tile of drag * @param p2 various bitstuffed elements * - p2 = (bit 0-5) - railroad type normal/maglev (0 = normal, 1 = mono, 2 = maglev), only used for building * - p2 = (bit 6-8) - track-orientation, valid values: 0-5 (Track enum) * - p2 = (bit 9) - 0 = build, 1 = remove tracks * - p2 = (bit 10) - 0 = build starting from and up to an obstacle, 1 = fail if an obstacle is found (used for AIs) * - p2 = (bit 11) - No custom bridge heads * - p2 = (bit 12) - No dual rail type * - p2 = (bit 13) - 0 = error on signal in the way, 1 = auto remove signals when in the way, only used for building * @param text unused * @return the cost of this operation or an error */ static CommandCost CmdRailTrackHelper(TileIndex tile, DoCommandFlag flags, uint32_t p1, uint32_t p2, const char *text) { CommandCost total_cost(EXPENSES_CONSTRUCTION); RailType railtype = Extract(p2); Track track = Extract(p2); bool remove = HasBit(p2, 9); bool fail_on_obstacle = HasBit(p2, 10); bool no_custom_bridge_heads = HasBit(p2, 11); bool no_dual_rail_type = HasBit(p2, 12); bool auto_remove_signals = HasBit(p2, 13); _rail_track_endtile = INVALID_TILE; if ((!remove && !ValParamRailType(railtype)) || !ValParamTrackOrientation(track)) return CMD_ERROR; if (p1 >= MapSize()) return CMD_ERROR; TileIndex end_tile = p1; Trackdir trackdir = TrackToTrackdir(track); CommandCost ret = ValidateAutoDrag(&trackdir, tile, end_tile); if (ret.Failed()) return ret; bool had_success = false; CommandCost last_error = CMD_ERROR; for (;;) { TileIndex last_endtile = _rail_track_endtile; CommandCost ret = DoCommand(tile, remove ? 0 : railtype, TrackdirToTrack(trackdir) | (auto_remove_signals << 3) | (no_custom_bridge_heads ? 1 << 4 : 0) | (no_dual_rail_type ? 1 << 5 : 0), flags, remove ? CMD_REMOVE_SINGLE_RAIL : CMD_BUILD_SINGLE_RAIL); if (ret.Failed()) { last_error = ret; if (_rail_track_endtile == INVALID_TILE) _rail_track_endtile = last_endtile; if (last_error.GetErrorMessage() != STR_ERROR_ALREADY_BUILT && !remove) { if (fail_on_obstacle) return last_error; if (had_success) break; // Keep going if we haven't constructed any rail yet, skipping the start of the drag } /* Ownership errors are more important. */ if (last_error.GetErrorMessage() == STR_ERROR_OWNED_BY && remove) break; } else { had_success = true; total_cost.AddCost(ret); } if (tile == end_tile) break; tile += ToTileIndexDiff(_trackdelta[trackdir]); /* toggle railbit for the non-diagonal tracks */ if (!IsDiagonalTrackdir(trackdir)) ToggleBit(trackdir, 0); } if (had_success) return total_cost; return last_error; } /** * Build rail on a stretch of track. * Stub for the unified rail builder/remover * @param tile start tile of drag * @param flags operation to perform * @param p1 end tile of drag * @param p2 various bitstuffed elements * - p2 = (bit 0-5) - railroad type normal/maglev (0 = normal, 1 = mono, 2 = maglev) * - p2 = (bit 6-8) - track-orientation, valid values: 0-5 (Track enum) * - p2 = (bit 9) - 0 = build, 1 = remove tracks * - p2 = (bit 10) - 0 = build up to an obstacle, 1 = fail if an obstacle is found (used for AIs). * - p2 = (bit 11) - No custom bridge heads * - p2 = (bit 12) - No dual rail type * - p2 = (bit 13) - 0 = error on signal in the way, 1 = auto remove signals when in the way * @param text unused * @return the cost of this operation or an error * @see CmdRailTrackHelper */ CommandCost CmdBuildRailroadTrack(TileIndex tile, DoCommandFlag flags, uint32_t p1, uint32_t p2, const char *text) { return CmdRailTrackHelper(tile, flags, p1, ClrBit(p2, 9), text); } /** * Build rail on a stretch of track. * Stub for the unified rail builder/remover * @param tile start tile of drag * @param flags operation to perform * @param p1 end tile of drag * @param p2 various bitstuffed elements * - p2 = (bit 0-5) - railroad type normal/maglev (0 = normal, 1 = mono, 2 = maglev), only used for building * - p2 = (bit 6-8) - track-orientation, valid values: 0-5 (Track enum) * - p2 = (bit 9) - 0 = build, 1 = remove tracks * - p2 = (bit 10) - 0 = build up to an obstacle, 1 = fail if an obstacle is found (used for AIs). * - p2 = (bit 11) - No custom bridge heads * - p2 = (bit 12) - No dual rail type * - p2 = (bit 13) - 0 = error on signal in the way, 1 = auto remove signals when in the way * @param text unused * @return the cost of this operation or an error * @see CmdRailTrackHelper */ CommandCost CmdRemoveRailroadTrack(TileIndex tile, DoCommandFlag flags, uint32_t p1, uint32_t p2, const char *text) { return CmdRailTrackHelper(tile, flags, p1, SetBit(p2, 9), text); } /** * Build a train depot * @param tile position of the train depot * @param flags operation to perform * @param p1 rail type * @param p2 bit 0..1 entrance direction (DiagDirection) * @param text unused * @return the cost of this operation or an error * * @todo When checking for the tile slope, * distinguish between "Flat land required" and "land sloped in wrong direction" */ CommandCost CmdBuildTrainDepot(TileIndex tile, DoCommandFlag flags, uint32_t p1, uint32_t p2, const char *text) { /* check railtype and valid direction for depot (0 through 3), 4 in total */ RailType railtype = Extract(p1); if (!ValParamRailType(railtype)) return CMD_ERROR; Slope tileh = GetTileSlope(tile); DiagDirection dir = Extract(p2); CommandCost cost(EXPENSES_CONSTRUCTION); /* Prohibit construction if * The tile is non-flat AND * 1) build-on-slopes is disabled * 2) the tile is steep i.e. spans two height levels * 3) the exit points in the wrong direction */ if (tileh != SLOPE_FLAT) { if (!_settings_game.construction.build_on_slopes || !CanBuildDepotByTileh(dir, tileh)) { return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED); } cost.AddCost(_price[PR_BUILD_FOUNDATION]); } cost.AddCost(DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR)); if (cost.Failed()) return cost; if (IsBridgeAbove(tile)) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST); if (!Depot::CanAllocateItem()) return CMD_ERROR; if (flags & DC_EXEC) { Depot *d = new Depot(tile); d->build_date = CalTime::CurDate(); MakeRailDepot(tile, _current_company, d->index, dir, railtype); MarkTileDirtyByTile(tile); MakeDefaultName(d); Company::Get(_current_company)->infrastructure.rail[railtype]++; DirtyCompanyInfrastructureWindows(_current_company); AddSideToSignalBuffer(tile, INVALID_DIAGDIR, _current_company); YapfNotifyTrackLayoutChange(tile, DiagDirToDiagTrack(dir)); } cost.AddCost(_price[PR_BUILD_DEPOT_TRAIN]); cost.AddCost(RailBuildCost(railtype)); return cost; } static void ClearBridgeTunnelSignalSimulation(TileIndex entrance, TileIndex exit) { if (IsBridge(entrance)) ClearBridgeEntranceSimulatedSignals(entrance); ClrTunnelBridgeSignalSimulationEntrance(entrance); ClrTunnelBridgeSignalSimulationExit(exit); } static void SetupBridgeTunnelSignalSimulation(TileIndex entrance, TileIndex exit) { SetTunnelBridgeSignalSimulationEntrance(entrance); SetTunnelBridgeEntranceSignalState(entrance, SIGNAL_STATE_GREEN); SetTunnelBridgeSignalSimulationExit(exit); if (_extra_aspects > 0) { SetTunnelBridgeEntranceSignalAspect(entrance, 0); UpdateAspectDeferred(entrance, GetTunnelBridgeEntranceTrackdir(entrance)); } } static void ReReserveTrainPath(Train *v) { /* Extend the train's path if it's not stopped or loading, or not at a safe position. */ if (!(((v->vehstatus & VS_STOPPED) && v->cur_speed == 0) || v->current_order.IsType(OT_LOADING)) || !IsSafeWaitingPosition(v, v->tile, v->GetVehicleTrackdir(), true, _settings_game.pf.forbid_90_deg)) { TryPathReserve(v, true); } } /** * Build signals, alternate between double/single, signal/semaphore, * pre/exit/combo-signals, and what-else not. If the rail piece does not * have any signals, bit 4 (cycle signal-type) is ignored * @param tile tile where to build the signals * @param flags operation to perform * @param p1 various bitstuffed elements * - p1 = (bit 0-2) - track-orientation, valid values: 0-5 (Track enum) * - p1 = (bit 3) - 1 = override signal/semaphore, or pre/exit/combo signal or (for bit 7) toggle variant (CTRL-toggle) * - p1 = (bit 4) - 0 = signals, 1 = semaphores * - p1 = (bit 5-7) - type of the signal, for valid values see enum SignalType in rail_map.h * - p1 = (bit 8) - convert the present signal type and variant * - p1 = (bit 9-10)- cycle through which signal sets? * - p1 = (bit 15-16)-cycle the signal direction this many times * - p1 = (bit 17) - 1 = don't modify an existing signal but don't fail either, 0 = always set new signal type * - p1 = (bit 18) - permit creation of/conversion to bidirectionally signalled bridges/tunnels * - p1 = (bit 19-22)-signal style * - p1 = (bit 23-27)-signal spacing * @param p2 used for CmdBuildManySignals() to copy direction of first signal * @param text unused * @return the cost of this operation or an error * @todo p2 should be replaced by two bits for "along" and "against" the track. */ CommandCost CmdBuildSingleSignal(TileIndex tile, DoCommandFlag flags, uint32_t p1, uint32_t p2, const char *text) { Track track = Extract(p1); bool ctrl_pressed = HasBit(p1, 3); // was the CTRL button pressed SignalVariant sigvar = (ctrl_pressed ^ HasBit(p1, 4)) ? SIG_SEMAPHORE : SIG_ELECTRIC; // the signal variant of the new signal SignalType sigtype = Extract(p1); // the signal type of the new signal bool convert_signal = HasBit(p1, 8); // convert button pressed uint num_dir_cycle = GB(p1, 15, 2); SignalCycleGroups which_signals = (SignalCycleGroups)GB(p1, 9, 2); uint signal_style = GB(p1, 19, 4); if (signal_style > _num_new_signal_styles || !HasBit(_enabled_new_signal_styles_mask, signal_style)) return CMD_ERROR; if (_settings_game.vehicle.train_braking_model == TBM_REALISTIC && IsSignalTypeUnsuitableForRealisticBraking(sigtype)) return CMD_ERROR; /* You can only build signals on plain rail tiles or tunnel/bridges, and the selected track must exist */ if (IsTileType(tile, MP_TUNNELBRIDGE)) { if (GetTunnelBridgeTransportType(tile) != TRANSPORT_RAIL) return CMD_ERROR; if (!ValParamTrackOrientation(track) || !IsTrackAcrossTunnelBridge(tile, track)) { return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK); } CommandCost ret = TunnelBridgeIsFree(tile, GetOtherTunnelBridgeEnd(tile), nullptr, TBIFM_ACROSS_ONLY); if (ret.Failed()) return ret; } else if (!ValParamTrackOrientation(track) || !IsPlainRailTile(tile) || !HasTrack(tile, track)) { return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK); } /* Protect against invalid signal copying */ if (p2 != 0 && (p2 & SignalOnTrack(track)) == 0) return CMD_ERROR; CommandCost ret = CheckTileOwnership(tile); if (ret.Failed()) return ret; auto is_style_usable = [](SignalVariant sigvar, uint8_t style_id, uint8_t mask) { if (style_id == 0) return true; const NewSignalStyle &style = _new_signal_styles[style_id - 1]; return ((sigvar == SIG_SEMAPHORE ? style.semaphore_mask : style.electric_mask) & mask) == mask; }; CommandCost cost; /* handle signals simulation on tunnel/bridge. */ if (IsTileType(tile, MP_TUNNELBRIDGE)) { int signal_spacing = GB(p1, 23, 5); if (signal_spacing == 0) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK); signal_spacing = Clamp(signal_spacing, 1, 16); TileIndex tile_exit = GetOtherTunnelBridgeEnd(tile); auto get_one_way_signal_count = [&]() -> uint { uint spacing; if (IsTunnelBridgeWithSignalSimulation(tile)) { spacing = GetTunnelBridgeSignalSimulationSpacing(tile); } else { spacing = GetBestTunnelBridgeSignalSimulationSpacing(tile, tile_exit, signal_spacing); } return 2 + (GetTunnelBridgeLength(tile, tile_exit) / spacing); }; if (TracksOverlap(GetTunnelBridgeTrackBits(tile)) || TracksOverlap(GetTunnelBridgeTrackBits(tile_exit))) return_cmd_error(STR_ERROR_NO_SUITABLE_RAILROAD_TRACK); bool bidirectional = HasBit(p1, 18) && (sigtype == SIGTYPE_PBS); cost = CommandCost(); bool flip_variant = false; bool change_style = false; bool is_pbs = (sigtype == SIGTYPE_PBS) || (sigtype == SIGTYPE_PBS_ONEWAY); Trackdir entrance_td = TrackExitdirToTrackdir(track, GetTunnelBridgeDirection(tile)); bool p2_signal_in = p2 & SignalAlongTrackdir(entrance_td); bool p2_signal_out = p2 & SignalAgainstTrackdir(entrance_td); bool p2_active = p2_signal_in || p2_signal_out; if (!IsTunnelBridgeWithSignalSimulation(tile)) { // toggle signal zero costs. if (convert_signal) return_cmd_error(STR_ERROR_THERE_ARE_NO_SIGNALS); if (!(p2_signal_in && p2_signal_out)) { cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_SIGNALS] * get_one_way_signal_count() * (bidirectional ? 2 : 1)); // minimal 1 if (HasBit(_signal_style_masks.no_tunnel_bridge, signal_style)) return_cmd_error(STR_ERROR_UNSUITABLE_SIGNAL_TYPE); if (!is_style_usable(sigvar, signal_style, bidirectional ? 0x11 : (is_pbs ? 0x21 : 0x1))) return_cmd_error(STR_ERROR_UNSUITABLE_SIGNAL_TYPE); } } else { if (HasBit(p1, 17)) return CommandCost(); const bool is_bidi = IsTunnelBridgeSignalSimulationBidirectional(tile); bool will_be_bidi = is_bidi; const bool is_semaphore = IsTunnelBridgeSemaphore(tile); bool will_be_semaphore = is_semaphore; bool will_be_pbs = IsTunnelBridgePBS(tile); const uint8_t is_style = GetTunnelBridgeSignalStyle(tile); uint8_t will_be_style = is_style; if (!p2_active) { if (convert_signal) { will_be_bidi = bidirectional && !ctrl_pressed; change_style = (signal_style != is_style); will_be_style = signal_style; will_be_pbs = is_pbs; will_be_semaphore = (sigvar == SIG_SEMAPHORE); if (HasBit(_signal_style_masks.no_tunnel_bridge, signal_style)) return_cmd_error(STR_ERROR_UNSUITABLE_SIGNAL_TYPE); } else if (ctrl_pressed) { will_be_bidi = false; will_be_pbs = !will_be_pbs; } } else if (!is_pbs) { will_be_bidi = false; } if ((p2_active && (sigvar == SIG_SEMAPHORE) != is_semaphore) || (convert_signal && (ctrl_pressed || (sigvar == SIG_SEMAPHORE) != is_semaphore))) { flip_variant = true; will_be_semaphore = !is_semaphore; } if (flip_variant || change_style) { cost = CommandCost(EXPENSES_CONSTRUCTION, ((_price[PR_BUILD_SIGNALS] * (will_be_bidi ? 2 : 1)) + (_price[PR_CLEAR_SIGNALS] * (is_bidi ? 2 : 1))) * get_one_way_signal_count()); } else if (is_bidi != will_be_bidi) { cost = CommandCost(EXPENSES_CONSTRUCTION, _price[will_be_bidi ? PR_BUILD_SIGNALS : PR_CLEAR_SIGNALS] * get_one_way_signal_count()); } if (!is_style_usable(will_be_semaphore ? SIG_SEMAPHORE : SIG_ELECTRIC, will_be_style, will_be_bidi ? 0x11 : (will_be_pbs ? 0x21 : 0x1))) return_cmd_error(STR_ERROR_UNSUITABLE_SIGNAL_TYPE); } auto remove_pbs_bidi = [&]() { if (IsTunnelBridgeSignalSimulationBidirectional(tile)) { ClrTunnelBridgeSignalSimulationExit(tile); ClrTunnelBridgeSignalSimulationEntrance(tile_exit); } }; auto set_bidi = [&](TileIndex t) { SetTunnelBridgeSignalSimulationEntrance(t); SetTunnelBridgeEntranceSignalState(t, SIGNAL_STATE_GREEN); SetTunnelBridgeSignalSimulationExit(t); if (_extra_aspects > 0) { SetTunnelBridgeEntranceSignalAspect(t, 0); UpdateAspectDeferred(t, GetTunnelBridgeEntranceTrackdir(t)); } }; if (_settings_game.vehicle.train_braking_model == TBM_REALISTIC) { for (TileIndex t : { tile, tile_exit }) { if (HasAcrossTunnelBridgeReservation(t)) { CommandCost ret = CheckTrainReservationPreventsTrackModification(t, FindFirstTrack(GetAcrossTunnelBridgeReservationTrackBits(t))); if (ret.Failed()) return ret; } } } if (flags & DC_EXEC) { Company * const c = Company::Get(GetTileOwner(tile)); std::vector re_reserve_trains; if (IsTunnelBridgeWithSignalSimulation(tile)) { c->infrastructure.signal -= GetTunnelBridgeSignalSimulationSignalCount(tile, tile_exit); } else { uint spacing = GetBestTunnelBridgeSignalSimulationSpacing(tile, tile_exit, signal_spacing); SetTunnelBridgeSignalSimulationSpacing(tile, spacing); SetTunnelBridgeSignalSimulationSpacing(tile_exit, spacing); for (TileIndex t : { tile, tile_exit }) { if (HasAcrossTunnelBridgeReservation(t)) { Train *re_reserve_train = GetTrainForReservation(t, FindFirstTrack(GetAcrossTunnelBridgeReservationTrackBits(t))); if (re_reserve_train != nullptr) { FreeTrainTrackReservation(re_reserve_train); re_reserve_trains.push_back(re_reserve_train); } } } } if (!p2_active && IsTunnelBridgeWithSignalSimulation(tile)) { // Toggle signal if already signals present. if (convert_signal) { if (flip_variant) { SetTunnelBridgeSemaphore(tile, !IsTunnelBridgeSemaphore(tile)); SetTunnelBridgeSemaphore(tile_exit, IsTunnelBridgeSemaphore(tile)); } if (!ctrl_pressed) { SetTunnelBridgePBS(tile, is_pbs); SetTunnelBridgePBS(tile_exit, is_pbs); if (bidirectional) { set_bidi(tile); set_bidi(tile_exit); } else { remove_pbs_bidi(); } } if (change_style) SetTunnelBridgeSignalStyle(tile, tile_exit, signal_style); } else if (ctrl_pressed) { SetTunnelBridgePBS(tile, !IsTunnelBridgePBS(tile)); SetTunnelBridgePBS(tile_exit, IsTunnelBridgePBS(tile)); if (!IsTunnelBridgePBS(tile)) remove_pbs_bidi(); } else if (!IsTunnelBridgeSignalSimulationBidirectional(tile)) { if (IsTunnelBridgeSignalSimulationEntrance(tile)) { ClearBridgeTunnelSignalSimulation(tile, tile_exit); SetupBridgeTunnelSignalSimulation(tile_exit, tile); } else { ClearBridgeTunnelSignalSimulation(tile_exit, tile); SetupBridgeTunnelSignalSimulation(tile, tile_exit); } } } else { /* Create one direction tunnel/bridge if required. */ if (!p2_active) { if (bidirectional) { set_bidi(tile); set_bidi(tile_exit); } else { SetupBridgeTunnelSignalSimulation(tile, tile_exit); } } else if (p2_signal_in != p2_signal_out) { /* If signal only on one side build accordingly one-way tunnel/bridge. */ if (p2_signal_in) { ClearBridgeTunnelSignalSimulation(tile_exit, tile); SetupBridgeTunnelSignalSimulation(tile, tile_exit); } else { ClearBridgeTunnelSignalSimulation(tile, tile_exit); SetupBridgeTunnelSignalSimulation(tile_exit, tile); } } if (!(p2_signal_in && p2_signal_out)) { SetTunnelBridgeSemaphore(tile, sigvar == SIG_SEMAPHORE); SetTunnelBridgeSemaphore(tile_exit, sigvar == SIG_SEMAPHORE); SetTunnelBridgePBS(tile, is_pbs); SetTunnelBridgePBS(tile_exit, is_pbs); SetTunnelBridgeSignalStyle(tile, tile_exit, signal_style); if (!IsTunnelBridgePBS(tile)) remove_pbs_bidi(); } } if (IsTunnelBridgeSignalSimulationExit(tile) && IsTunnelBridgeEffectivelyPBS(tile) && !HasAcrossTunnelBridgeReservation(tile)) SetTunnelBridgeExitSignalState(tile, SIGNAL_STATE_RED); if (IsTunnelBridgeSignalSimulationExit(tile_exit) && IsTunnelBridgeEffectivelyPBS(tile_exit) && !HasAcrossTunnelBridgeReservation(tile_exit)) SetTunnelBridgeExitSignalState(tile_exit, SIGNAL_STATE_RED); MarkBridgeOrTunnelDirty(tile); AddSideToSignalBuffer(tile, INVALID_DIAGDIR, GetTileOwner(tile)); AddSideToSignalBuffer(tile_exit, INVALID_DIAGDIR, GetTileOwner(tile)); YapfNotifyTrackLayoutChange(tile, track); YapfNotifyTrackLayoutChange(tile_exit, track); if (IsTunnelBridgeWithSignalSimulation(tile)) c->infrastructure.signal += GetTunnelBridgeSignalSimulationSignalCount(tile, tile_exit); DirtyCompanyInfrastructureWindows(GetTileOwner(tile)); for (Train *re_reserve_train : re_reserve_trains) { ReReserveTrainPath(re_reserve_train); } } return cost; } /* See if this is a valid track combination for signals (no overlap) */ if (TracksOverlap(GetTrackBits(tile))) return_cmd_error(STR_ERROR_NO_SUITABLE_RAILROAD_TRACK); /* In case we don't want to change an existing signal, return without error. */ if (HasBit(p1, 17) && HasSignalOnTrack(tile, track)) return CommandCost(); /* you can not convert a signal if no signal is on track */ if (convert_signal && !HasSignalOnTrack(tile, track)) return_cmd_error(STR_ERROR_THERE_ARE_NO_SIGNALS); if (!HasSignalOnTrack(tile, track)) { /* build new signals */ cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_SIGNALS]); if (!is_style_usable(sigvar, signal_style, 1 << sigtype)) return_cmd_error(STR_ERROR_UNSUITABLE_SIGNAL_TYPE); } else { if (p2 != 0 && (sigvar != GetSignalVariant(tile, track) || signal_style != GetSignalStyle(tile, track))) { /* convert signals <-> semaphores and/or change style */ cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_SIGNALS] + _price[PR_CLEAR_SIGNALS]); if (!is_style_usable(sigvar, signal_style, 1 << sigtype)) return_cmd_error(STR_ERROR_UNSUITABLE_SIGNAL_TYPE); } else if (convert_signal) { /* convert button pressed */ if (ctrl_pressed || GetSignalVariant(tile, track) != sigvar || signal_style != GetSignalStyle(tile, track)) { /* it costs money to change signal variant (light or semaphore) */ cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_SIGNALS] + _price[PR_CLEAR_SIGNALS]); } else { /* it is free to change signal type (block, exit, entry, combo, path, etc) */ cost = CommandCost(); } if (ctrl_pressed) { if (!is_style_usable((GetSignalVariant(tile, track) == SIG_ELECTRIC) ? SIG_SEMAPHORE : SIG_ELECTRIC, GetSignalStyle(tile, track), 1 << GetSignalType(tile, track))) return_cmd_error(STR_ERROR_UNSUITABLE_SIGNAL_TYPE); } else { if (!is_style_usable(sigvar, signal_style, 1 << sigtype)) return_cmd_error(STR_ERROR_UNSUITABLE_SIGNAL_TYPE); } } else { if (_ctrl_pressed && GetSignalStyle(tile, track) != 0) { SignalType new_sigtype = NextSignalType(GetSignalType(tile, track), which_signals); if (_settings_game.vehicle.train_braking_model == TBM_REALISTIC && IsSignalTypeUnsuitableForRealisticBraking(new_sigtype)) return CMD_ERROR; if (!is_style_usable(GetSignalVariant(tile, track), GetSignalStyle(tile, track), 1 << new_sigtype)) return_cmd_error(STR_ERROR_UNSUITABLE_SIGNAL_TYPE); } /* it is free to change orientation or number of signals on the tile (for block/presignals which allow signals in both directions) */ cost = CommandCost(); } } Train *v = nullptr; /* The new/changed signal could block our path. As this can lead to * stale reservations, we clear the path reservation here and try * to redo it later on. */ if (HasReservedTracks(tile, TrackToTrackBits(track))) { v = GetTrainForReservation(tile, track); if (v != nullptr) { CommandCost ret = CheckTrainReservationPreventsTrackModification(v); if (ret.Failed()) return ret; if (flags & DC_EXEC) FreeTrainTrackReservation(v); } } if (flags & DC_EXEC) { if (!HasSignals(tile)) { /* there are no signals at all on this tile yet */ SetHasSignals(tile, true); SetSignalStates(tile, 0xF); // all signals are on SetPresentSignals(tile, 0); // no signals built by default SetSignalType(tile, track, sigtype); SetSignalVariant(tile, track, sigvar); SetSignalStyle(tile, track, signal_style); UpdateSignalReserveThroughBit(tile, track, false); } /* Subtract old signal infrastructure count. */ Company::Get(GetTileOwner(tile))->infrastructure.signal -= CountBits(GetPresentSignals(tile)); if (p2 == 0) { if (!HasSignalOnTrack(tile, track)) { /* build new signals */ SetPresentSignals(tile, GetPresentSignals(tile) | ((IsPbsSignal(sigtype) || _settings_game.vehicle.train_braking_model == TBM_REALISTIC) ? KillFirstBit(SignalOnTrack(track)) : SignalOnTrack(track))); SetSignalType(tile, track, sigtype); SetSignalVariant(tile, track, sigvar); SetSignalStyle(tile, track, signal_style); UpdateSignalReserveThroughBit(tile, track, false); while (num_dir_cycle-- > 0) CycleSignalSide(tile, track); } else { if (convert_signal) { /* convert signal button pressed */ if (ctrl_pressed) { /* toggle the present signal variant: SIG_ELECTRIC <-> SIG_SEMAPHORE */ SetSignalVariant(tile, track, (GetSignalVariant(tile, track) == SIG_ELECTRIC) ? SIG_SEMAPHORE : SIG_ELECTRIC); /* Query current signal type so the check for PBS signals below works. */ sigtype = GetSignalType(tile, track); } else { if (GetSignalType(tile, track) == SIGTYPE_NO_ENTRY) CycleSignalSide(tile, track); /* convert the present signal to the chosen type and variant */ if (IsPresignalProgrammable(tile, track)) { FreeSignalProgram(SignalReference(tile, track)); } SetSignalType(tile, track, sigtype); SetSignalVariant(tile, track, sigvar); SetSignalStyle(tile, track, signal_style); if (IsPbsSignal(sigtype) && (GetPresentSignals(tile) & SignalOnTrack(track)) == SignalOnTrack(track)) { SetPresentSignals(tile, (GetPresentSignals(tile) & ~SignalOnTrack(track)) | KillFirstBit(SignalOnTrack(track))); } if (sigtype == SIGTYPE_NO_ENTRY) CycleSignalSide(tile, track); UpdateSignalReserveThroughBit(tile, track, false); } } else if (ctrl_pressed) { /* cycle through signal types */ sigtype = (SignalType)(GetSignalType(tile, track)); if (IsProgrammableSignal(sigtype)) { FreeSignalProgram(SignalReference(tile, track)); } if (sigtype == SIGTYPE_NO_ENTRY) CycleSignalSide(tile, track); sigtype = NextSignalType(sigtype, which_signals); if (_settings_game.vehicle.train_braking_model == TBM_REALISTIC && IsSignalTypeUnsuitableForRealisticBraking(sigtype)) return CMD_ERROR; SetSignalType(tile, track, sigtype); if (IsPbsSignal(sigtype) && (GetPresentSignals(tile) & SignalOnTrack(track)) == SignalOnTrack(track)) { SetPresentSignals(tile, (GetPresentSignals(tile) & ~SignalOnTrack(track)) | KillFirstBit(SignalOnTrack(track))); } if (sigtype == SIGTYPE_NO_ENTRY) CycleSignalSide(tile, track); } else { /* programmable pre-signal dependencies are invalidated when the signal direction is changed */ CheckRemoveSignal(tile, track); /* cycle the signal side: both -> left -> right -> both -> ... */ CycleSignalSide(tile, track); /* Query current signal type so the check for PBS signals below works. */ sigtype = GetSignalType(tile, track); } } } else { /* If CmdBuildManySignals is called with copying signals, just copy the * direction of the first signal given as parameter by CmdBuildManySignals */ SetPresentSignals(tile, (GetPresentSignals(tile) & ~SignalOnTrack(track)) | (p2 & SignalOnTrack(track))); SetSignalVariant(tile, track, sigvar); if (IsPresignalProgrammable(tile, track)) FreeSignalProgram(SignalReference(tile, track)); SetSignalType(tile, track, sigtype); SetSignalStyle(tile, track, signal_style); UpdateSignalReserveThroughBit(tile, track, false); } /* Add new signal infrastructure count. */ Company::Get(GetTileOwner(tile))->infrastructure.signal += CountBits(GetPresentSignals(tile)); DirtyCompanyInfrastructureWindows(GetTileOwner(tile)); if (IsPbsSignalNonExtended(sigtype) || (_settings_game.vehicle.train_braking_model == TBM_REALISTIC && HasBit(GetRailReservationTrackBits(tile), track))) { /* PBS signals should show red unless they are on reserved tiles without a train. */ uint mask = GetPresentSignals(tile) & SignalOnTrack(track); SetSignalStates(tile, (GetSignalStates(tile) & ~mask) | ((HasBit(GetRailReservationTrackBits(tile), track) && EnsureNoVehicleOnGround(tile).Succeeded() ? UINT_MAX : 0) & mask)); } MarkTileDirtyByTile(tile, VMDF_NOT_MAP_MODE); AddTrackToSignalBuffer(tile, track, _current_company); YapfNotifyTrackLayoutChange(tile, track); if (v != nullptr && v->track != TRACK_BIT_DEPOT) { ReReserveTrainPath(v); } } return cost; } static bool CheckSignalAutoFill(TileIndex &tile, Trackdir &trackdir, int &signal_ctr, bool remove, bool allow_station) { tile = AddTileIndexDiffCWrap(tile, _trackdelta[trackdir]); if (tile == INVALID_TILE) return false; /* Check for track bits on the new tile */ TrackdirBits trackdirbits = GetTileTrackdirBits(tile, TRANSPORT_RAIL, 0); if (TracksOverlap(TrackdirBitsToTrackBits(trackdirbits))) return false; trackdirbits &= TrackdirReachesTrackdirs(trackdir); /* No track bits, must stop */ if (trackdirbits == TRACKDIR_BIT_NONE) return false; /* Get the first track dir */ trackdir = RemoveFirstTrackdir(&trackdirbits); /* Any left? It's a junction so we stop */ if (trackdirbits != TRACKDIR_BIT_NONE) return false; switch (GetTileType(tile)) { case MP_RAILWAY: if (IsRailDepot(tile)) return false; if (!remove && HasSignalOnTrack(tile, TrackdirToTrack(trackdir))) return false; signal_ctr++; if (IsDiagonalTrackdir(trackdir)) { signal_ctr++; /* Ensure signal_ctr even so X and Y pieces get signals */ ClrBit(signal_ctr, 0); } return true; case MP_ROAD: if (!IsLevelCrossing(tile)) return false; signal_ctr += 2; return true; case MP_TUNNELBRIDGE: { if (!remove && IsTunnelBridgeWithSignalSimulation(tile)) return false; TileIndex orig_tile = tile; // backup old value if (GetTunnelBridgeTransportType(tile) != TRANSPORT_RAIL) return false; signal_ctr += IsDiagonalTrackdir(trackdir) ? 2 : 1; if (GetTunnelBridgeDirection(tile) == TrackdirToExitdir(trackdir)) { /* Skip to end of tunnel or bridge * note that tile is a parameter by reference, so it must be updated */ tile = GetOtherTunnelBridgeEnd(tile); signal_ctr += GetTunnelBridgeLength(orig_tile, tile) * 2; /* Check for track bits on the new tile */ trackdirbits = GetTileTrackdirBits(tile, TRANSPORT_RAIL, 0); if (TracksOverlap(TrackdirBitsToTrackBits(trackdirbits))) return false; trackdirbits &= TrackdirReachesTrackdirs(trackdir); /* Get the first track dir */ trackdir = RemoveFirstTrackdir(&trackdirbits); /* Any left? It's a junction so we stop */ if (trackdirbits != TRACKDIR_BIT_NONE) return false; signal_ctr += IsDiagonalTrackdir(trackdir) ? 2 : 1; } return true; } case MP_STATION: { if (!allow_station) return false; signal_ctr += 2; return true; } default: return false; } } /** * Build many signals by dragging; AutoSignals * @param tile start tile of drag * @param flags operation to perform * @param p1 end tile of drag * @param p2 various bitstuffed elements * - p2 = (bit 0- 2) - track-orientation, valid values: 0-5 (Track enum) * - p2 = (bit 3) - 1 = override signal/semaphore, or pre/exit/combo signal (CTRL-toggle) * - p2 = (bit 4) - 0 = signals, 1 = semaphores * - p2 = (bit 5) - 0 = build, 1 = remove signals * - p2 = (bit 6) - 0 = selected stretch, 1 = auto fill * - p2 = (bit 7- 9) - default signal type * - p2 = (bit 10) - 0 = keep fixed distance, 1 = minimise gaps between signals * - p2 = (bit 11-14) - default signal style * - p2 = (bit 24-31) - user defined signals_density * @param p3 various bitstuffed elements * - p3 = (bit 0) - 1 = skip over rail stations/waypoints, 0 = stop at rail stations/waypoints * @param text unused * @return the cost of this operation or an error */ static CommandCost CmdSignalTrackHelper(TileIndex tile, DoCommandFlag flags, uint32_t p1, uint32_t p2, uint64_t p3, const char *text) { CommandCost total_cost(EXPENSES_CONSTRUCTION); TileIndex start_tile = tile; Track track = Extract(p2); bool mode = HasBit(p2, 3); bool semaphores = HasBit(p2, 4); bool remove = HasBit(p2, 5); bool autofill = HasBit(p2, 6); bool minimise_gaps = HasBit(p2, 10); uint8_t signal_density = GB(p2, 24, 8); uint8_t signal_style = GB(p2, 11, 4); bool allow_station = HasBit(p3, 0); if (p1 >= MapSize() || !ValParamTrackOrientation(track)) return CMD_ERROR; TileIndex end_tile = p1; if (signal_density == 0 || signal_density > 20) return CMD_ERROR; if (!IsPlainRailTile(tile)) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK); /* for vertical/horizontal tracks, double the given signals density * since the original amount will be too dense (shorter tracks) */ signal_density *= 2; Trackdir trackdir = TrackToTrackdir(track); CommandCost ret = ValidateAutoDrag(&trackdir, tile, end_tile); if (ret.Failed()) return ret; track = TrackdirToTrack(trackdir); // trackdir might have changed, keep track in sync Trackdir start_trackdir = trackdir; /* Must start on a valid track to be able to avoid loops */ if (!HasTrack(tile, track)) return CMD_ERROR; SignalType sigtype = Extract(p2); if (sigtype > SIGTYPE_LAST) return CMD_ERROR; uint8_t signals; /* copy the signal-style of the first rail-piece if existing */ if (HasSignalOnTrack(tile, track)) { signals = GetPresentSignals(tile) & SignalOnTrack(track); assert(signals != 0); /* copy signal/semaphores style (independent of CTRL) */ semaphores = GetSignalVariant(tile, track) != SIG_ELECTRIC; sigtype = GetSignalType(tile, track); /* Don't but copy entry or exit-signal type */ if (sigtype == SIGTYPE_ENTRY || sigtype == SIGTYPE_EXIT) sigtype = SIGTYPE_BLOCK; signal_style = GetSignalStyle(tile, track); } else { // no signals exist, drag a two-way signal stretch signals = IsPbsSignal(sigtype) ? SignalAlongTrackdir(trackdir) : SignalOnTrack(track); } uint8_t signal_dir = 0; if (signals & SignalAlongTrackdir(trackdir)) SetBit(signal_dir, 0); if (signals & SignalAgainstTrackdir(trackdir)) SetBit(signal_dir, 1); /* signal_ctr - amount of tiles already processed * last_used_ctr - amount of tiles before previously placed signal * signals_density - setting to put signal on every Nth tile (double space on |, -- tracks) * last_suitable_ctr - amount of tiles before last possible signal place * last_suitable_tile - last tile where it is possible to place a signal * last_suitable_trackdir - trackdir of the last tile ********** * 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 * remove - 1 remove signals, 0 build signals */ int signal_ctr = 0; int last_used_ctr = INT_MIN; // initially INT_MIN to force building/removing at the first tile int last_suitable_ctr = 0; TileIndex last_suitable_tile = INVALID_TILE; Trackdir last_suitable_trackdir = INVALID_TRACKDIR; CommandCost last_error = CMD_ERROR; bool had_success = false; std::vector tunnel_bridge_blacklist; for (;;) { bool tile_ok = true; if (IsTileType(tile, MP_TUNNELBRIDGE)) { if (container_unordered_remove(tunnel_bridge_blacklist, tile) > 0) { /* This tile is blacklisted, skip tile and remove from blacklist. * Mark last used counter as current tile. */ tile_ok = false; last_used_ctr = signal_ctr; last_suitable_tile = INVALID_TILE; } } /* only build/remove signals with the specified density */ if (tile_ok && (remove || minimise_gaps || signal_ctr % signal_density == 0 || IsTileType(tile, MP_TUNNELBRIDGE))) { uint32_t param1 = GB(TrackdirToTrack(trackdir), 0, 3); SB(param1, 3, 1, mode); SB(param1, 4, 1, semaphores); SB(param1, 5, 3, sigtype); SB(param1, 19, 4, signal_style); if (!remove && signal_ctr == 0) SetBit(param1, 17); if (!remove) SB(param1, 23, 5, Clamp(GB(p2, 24, 8), 1, 16)); /* Pick the correct orientation for the track direction */ signals = 0; if (HasBit(signal_dir, 0)) signals |= SignalAlongTrackdir(trackdir); if (HasBit(signal_dir, 1)) signals |= SignalAgainstTrackdir(trackdir); /* Test tiles in between for suitability as well if minimising gaps. */ bool test_only = !remove && minimise_gaps && signal_ctr < (last_used_ctr + signal_density); CommandCost ret = DoCommand(tile, param1, signals, test_only ? flags & ~DC_EXEC : flags, remove ? CMD_REMOVE_SIGNALS : CMD_BUILD_SIGNALS); if (!test_only && ret.Succeeded() && IsTileType(tile, MP_TUNNELBRIDGE) && GetTunnelBridgeDirection(tile) == TrackdirToExitdir(trackdir)) { /* Blacklist far end of tunnel if we just actioned the near end */ tunnel_bridge_blacklist.push_back(GetOtherTunnelBridgeEnd(tile)); } if (ret.Succeeded()) { /* Remember last track piece where we can place a signal. */ last_suitable_ctr = signal_ctr; last_suitable_tile = tile; last_suitable_trackdir = trackdir; } else if (!test_only && last_suitable_tile != INVALID_TILE && ret.GetErrorMessage() != STR_ERROR_CANNOT_MODIFY_TRACK_TRAIN_APPROACHING) { /* If a signal can't be placed, place it at the last possible position. */ SB(param1, 0, 3, TrackdirToTrack(last_suitable_trackdir)); ClrBit(param1, 17); /* Pick the correct orientation for the track direction. */ signals = 0; if (HasBit(signal_dir, 0)) signals |= SignalAlongTrackdir(last_suitable_trackdir); if (HasBit(signal_dir, 1)) signals |= SignalAgainstTrackdir(last_suitable_trackdir); ret = DoCommand(last_suitable_tile, param1, signals, flags, remove ? CMD_REMOVE_SIGNALS : CMD_BUILD_SIGNALS); if (ret.Succeeded() && IsTileType(last_suitable_tile, MP_TUNNELBRIDGE) && GetTunnelBridgeDirection(last_suitable_tile) == TrackdirToExitdir(last_suitable_trackdir)) { /* Blacklist far end of tunnel if we just actioned the near end */ tunnel_bridge_blacklist.push_back(GetOtherTunnelBridgeEnd(last_suitable_tile)); } } /* Collect cost. */ if (!test_only) { /* Be user-friendly and try placing signals as much as possible */ if (ret.Succeeded()) { had_success = true; total_cost.AddCost(ret); last_used_ctr = last_suitable_ctr; last_suitable_tile = INVALID_TILE; } else { /* The "No railway" error is the least important one. */ if (ret.GetErrorMessage() != STR_ERROR_THERE_IS_NO_RAILROAD_TRACK || last_error.GetErrorMessage() == INVALID_STRING_ID) { last_error = ret; } } } } if (autofill) { if (!CheckSignalAutoFill(tile, trackdir, signal_ctr, remove, allow_station)) break; /* Prevent possible loops */ if (tile == start_tile && trackdir == start_trackdir) break; } else { if (tile == end_tile) break; tile += ToTileIndexDiff(_trackdelta[trackdir]); signal_ctr++; /* toggle railbit for the non-diagonal tracks (|, -- tracks) */ if (IsDiagonalTrackdir(trackdir)) { signal_ctr++; } else { ToggleBit(trackdir, 0); } } } return had_success ? total_cost : last_error; } /** * Build signals on a stretch of track. * Stub for the unified signal builder/remover * @param tile start tile of drag * @param flags operation to perform * @param p1 end tile of drag * @param p2 various bitstuffed elements * - p2 = (bit 0- 2) - track-orientation, valid values: 0-5 (Track enum) * - p2 = (bit 3) - 1 = override signal/semaphore, or pre/exit/combo signal (CTRL-toggle) * - p2 = (bit 4) - 0 = signals, 1 = semaphores * - p2 = (bit 5) - 0 = build, 1 = remove signals * - p2 = (bit 6) - 0 = selected stretch, 1 = auto fill * - p2 = (bit 7- 9) - default signal type * - p2 = (bit 10) - 0 = keep fixed distance, 1 = minimise gaps between signals * - p2 = (bit 11-14) - default signal style * - p2 = (bit 24-31) - user defined signals_density * @param p3 various bitstuffed elements * - p3 = (bit 0) - 1 = skip over rail stations/waypoints, 0 = stop at rail stations/waypoints * @param text unused * @return the cost of this operation or an error * @see CmdSignalTrackHelper */ CommandCost CmdBuildSignalTrack(TileIndex tile, DoCommandFlag flags, uint32_t p1, uint32_t p2, uint64_t p3, const char *text, const CommandAuxiliaryBase *aux_data) { return CmdSignalTrackHelper(tile, flags, p1, p2, p3, text); } /** * Remove signals * @param tile coordinates where signal is being deleted from * @param flags operation to perform * @param p1 various bitstuffed elements, only track information is used * - (bit 0- 2) - track-orientation, valid values: 0-5 (Track enum) * - (bit 3) - override signal/semaphore, or pre/exit/combo signal (CTRL-toggle) * - (bit 4) - 0 = signals, 1 = semaphores * @param p2 unused * @param text unused * @return the cost of this operation or an error */ CommandCost CmdRemoveSingleSignal(TileIndex tile, DoCommandFlag flags, uint32_t p1, uint32_t p2, const char *text) { Track track = Extract(p1); Money cost = _price[PR_CLEAR_SIGNALS]; if (IsTileType(tile, MP_TUNNELBRIDGE)) { if (GetTunnelBridgeTransportType(tile) != TRANSPORT_RAIL) return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK); if (!ValParamTrackOrientation(track) || !IsTrackAcrossTunnelBridge(tile, track)) { return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK); } if (!IsTunnelBridgeWithSignalSimulation(tile)) return_cmd_error(STR_ERROR_THERE_ARE_NO_SIGNALS); TileIndex end = GetOtherTunnelBridgeEnd(tile); CommandCost ret = TunnelBridgeIsFree(tile, end, nullptr, TBIFM_ACROSS_ONLY); if (ret.Failed()) return ret; cost *= GetTunnelBridgeSignalSimulationSignalCount(tile, end); } else { if (!ValParamTrackOrientation(track) || !IsPlainRailTile(tile) || !HasTrack(tile, track)) { return_cmd_error(STR_ERROR_THERE_IS_NO_RAILROAD_TRACK); } if (!HasSignalOnTrack(tile, track)) { return_cmd_error(STR_ERROR_THERE_ARE_NO_SIGNALS); } } /* Only water can remove signals from anyone */ if (_current_company != OWNER_WATER) { CommandCost ret = CheckTileOwnership(tile); if (ret.Failed()) return ret; } if (IsTunnelBridgeWithSignalSimulation(tile)) { // handle tunnel/bridge signals. TileIndex end = GetOtherTunnelBridgeEnd(tile); std::vector re_reserve_trains; for (TileIndex t : { tile, end }) { if (HasAcrossTunnelBridgeReservation(t)) { Train *v = GetTrainForReservation(t, FindFirstTrack(GetAcrossTunnelBridgeReservationTrackBits(t))); if (v != nullptr) { CommandCost ret = CheckTrainReservationPreventsTrackModification(v); if (ret.Failed()) return ret; if (flags & DC_EXEC) { FreeTrainTrackReservation(v); re_reserve_trains.push_back(v); } } } } if (flags & DC_EXEC) { Track end_track = FindFirstTrack(GetAcrossTunnelBridgeTrackBits(end)); Company *c = Company::Get(GetTileOwner(tile)); c->infrastructure.signal -= GetTunnelBridgeSignalSimulationSignalCount(tile, end); TraceRestrictNotifySignalRemoval(tile, track); TraceRestrictNotifySignalRemoval(end, end_track); ClearBridgeTunnelSignalSimulation(end, tile); ClearBridgeTunnelSignalSimulation(tile, end); SetTunnelBridgeSignalStyle(tile, end, 0); MarkBridgeOrTunnelDirty(tile); AddSideToSignalBuffer(tile, INVALID_DIAGDIR, GetTileOwner(tile)); AddSideToSignalBuffer(end, INVALID_DIAGDIR, GetTileOwner(tile)); YapfNotifyTrackLayoutChange(tile, track); YapfNotifyTrackLayoutChange(end, end_track); DirtyCompanyInfrastructureWindows(GetTileOwner(tile)); for (Train *v : re_reserve_trains) { ReReserveTrainPath(v); } } return CommandCost(EXPENSES_CONSTRUCTION, cost); } Train *v = nullptr; if (HasReservedTracks(tile, TrackToTrackBits(track))) { v = GetTrainForReservation(tile, track); } else if (IsPbsSignal(GetSignalType(tile, track))) { /* PBS signal, might be the end of a path reservation. */ Trackdir td = TrackToTrackdir(track); for (int i = 0; v == nullptr && i < 2; i++, td = ReverseTrackdir(td)) { /* Only test the active signal side. */ if (!HasSignalOnTrackdir(tile, ReverseTrackdir(td))) continue; TileIndex next = TileAddByDiagDir(tile, TrackdirToExitdir(td)); TrackBits tracks = TrackdirBitsToTrackBits(TrackdirReachesTrackdirs(td)); if (HasReservedTracks(next, tracks)) { v = GetTrainForReservation(next, TrackBitsToTrack(GetReservedTrackbits(next) & tracks)); } } } if (v != nullptr) { CommandCost ret = CheckTrainReservationPreventsTrackModification(v); if (ret.Failed()) return ret; } /* Do it? */ if (flags & DC_EXEC) { Company::Get(GetTileOwner(tile))->infrastructure.signal -= CountBits(GetPresentSignals(tile)); CheckRemoveSignal(tile, track); SetPresentSignals(tile, GetPresentSignals(tile) & ~SignalOnTrack(track)); Company::Get(GetTileOwner(tile))->infrastructure.signal += CountBits(GetPresentSignals(tile)); DirtyCompanyInfrastructureWindows(GetTileOwner(tile)); TraceRestrictNotifySignalRemoval(tile, track); /* removed last signal from tile? */ if (GetPresentSignals(tile) == 0) { SetSignalStates(tile, 0); SetHasSignals(tile, false); SetSignalVariant(tile, INVALID_TRACK, SIG_ELECTRIC); // remove any possible semaphores } AddTrackToSignalBuffer(tile, track, GetTileOwner(tile)); YapfNotifyTrackLayoutChange(tile, track); if (v != nullptr && !(v->track & TRACK_BIT_WORMHOLE && IsTunnelBridgeWithSignalSimulation(v->tile))) { TryPathReserve(v, false); } MarkTileDirtyByTile(tile, VMDF_NOT_MAP_MODE); } return CommandCost(EXPENSES_CONSTRUCTION, cost); } /** * Remove signals on a stretch of track. * Stub for the unified signal builder/remover * @param tile start tile of drag * @param flags operation to perform * @param p1 end tile of drag * @param p2 various bitstuffed elements * - p2 = (bit 0- 2) - track-orientation, valid values: 0-5 (Track enum) * - p2 = (bit 3) - 1 = override signal/semaphore, or pre/exit/combo signal (CTRL-toggle) * - p2 = (bit 4) - 0 = signals, 1 = semaphores * - p2 = (bit 5) - 0 = build, 1 = remove signals * - p2 = (bit 6) - 0 = selected stretch, 1 = auto fill * - p2 = (bit 7- 9) - default signal type * - p2 = (bit 24-31) - user defined signals_density * @param p3 various bitstuffed elements * - p3 = (bit 0) - 1 = skip over rail stations/waypoints, 0 = stop at rail stations/waypoints * @param text unused * @return the cost of this operation or an error * @see CmdSignalTrackHelper */ CommandCost CmdRemoveSignalTrack(TileIndex tile, DoCommandFlag flags, uint32_t p1, uint32_t p2, uint64_t p3, const char *text, const CommandAuxiliaryBase *aux_data) { return CmdSignalTrackHelper(tile, flags, p1, SetBit(p2, 5), p3, text); // bit 5 is remove bit } /** Update power of train under which is the railtype being converted */ static Vehicle *UpdateTrainPowerProc(Vehicle *v, void *data) { TrainList *affected_trains = static_cast(data); include(*affected_trains, Train::From(v)->First()); return nullptr; } struct UpdateTrainPowerProcData { TrainList *train_list; TrackBits track_bits; }; /** Update power of train under which is the railtype being converted */ static Vehicle *UpdateTrainPowerProcAcrossTunnelBridge(Vehicle *v, void *data) { UpdateTrainPowerProcData *utpp_data = static_cast(data); TrackBits vehicle_track = Train::From(v)->track; if (!(vehicle_track & TRACK_BIT_WORMHOLE) && !(utpp_data->track_bits & vehicle_track)) return nullptr; include(*(utpp_data->train_list), Train::From(v)->First()); return nullptr; } /** Update power of train under which is the railtype being converted */ static Vehicle *UpdateTrainPowerProcOnTrackBits(Vehicle *v, void *data) { UpdateTrainPowerProcData *utpp_data = static_cast(data); if (!(utpp_data->track_bits & Train::From(v)->track)) return nullptr; include(*(utpp_data->train_list), Train::From(v)->First()); return nullptr; } struct EnsureNoIncompatibleRailtypeTrainOnGroundData { int z; RailType type; }; static Vehicle *EnsureNoIncompatibleRailtypeTrainProc(Vehicle *v, void *data) { const EnsureNoIncompatibleRailtypeTrainOnGroundData *procdata = (EnsureNoIncompatibleRailtypeTrainOnGroundData *)data; if (v->z_pos > procdata->z) return nullptr; if (HasBit(Train::From(v)->First()->compatible_railtypes, procdata->type)) return nullptr; return v; } CommandCost EnsureNoIncompatibleRailtypeTrainOnGround(TileIndex tile, RailType type) { EnsureNoIncompatibleRailtypeTrainOnGroundData data = { GetTileMaxPixelZ(tile), type }; if (HasVehicleOnPos(tile, VEH_TRAIN, &data, &EnsureNoIncompatibleRailtypeTrainProc)) { return_cmd_error(STR_ERROR_TRAIN_IN_THE_WAY); } return CommandCost(); } struct EnsureNoIncompatibleRailtypeTrainOnTrackBitsData { TrackBits track_bits; RailType type; }; static Vehicle *EnsureNoIncompatibleRailtypeTrainOnTrackProc(Vehicle *v, void *data) { const EnsureNoIncompatibleRailtypeTrainOnTrackBitsData *procdata = (EnsureNoIncompatibleRailtypeTrainOnTrackBitsData *)data; TrackBits rail_bits = procdata->track_bits; Train *t = Train::From(v); if (HasBit(t->First()->compatible_railtypes, procdata->type)) return nullptr; if (rail_bits & TRACK_BIT_WORMHOLE) { if (t->track & TRACK_BIT_WORMHOLE) return v; rail_bits &= ~TRACK_BIT_WORMHOLE; } else if (t->track & TRACK_BIT_WORMHOLE) { return nullptr; } if ((t->track != rail_bits) && !TracksOverlap(t->track | rail_bits)) return nullptr; return v; } CommandCost EnsureNoIncompatibleRailtypeTrainOnTrackBits(TileIndex tile, TrackBits track_bits, RailType type) { EnsureNoIncompatibleRailtypeTrainOnTrackBitsData data = { track_bits, type }; if (HasVehicleOnPos(tile, VEH_TRAIN, &data, &EnsureNoIncompatibleRailtypeTrainOnTrackProc)) { return_cmd_error(STR_ERROR_TRAIN_IN_THE_WAY); } return CommandCost(); } /** * 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 flags operation to perform * @param p1 start tile of drag * @param p2 various bitstuffed elements: * - p2 = (bit 0- 5) new railtype to convert to. * - p2 = (bit 6) build diagonally or not. * @param text unused * @return the cost of this operation or an error */ CommandCost CmdConvertRail(TileIndex tile, DoCommandFlag flags, uint32_t p1, uint32_t p2, const char *text) { RailType totype = Extract(p2); TileIndex area_start = p1; TileIndex area_end = tile; bool diagonal = HasBit(p2, 6); if (!ValParamRailType(totype)) return CMD_ERROR; if (area_start >= MapSize()) return CMD_ERROR; TrainList affected_trains; CommandCost cost(EXPENSES_CONSTRUCTION); CommandCost error = CommandCost(STR_ERROR_NO_SUITABLE_RAILROAD_TRACK); // by default, there is no track to convert. bool found_convertible_track = false; // whether we actually did convert some track (see bug #7633) OrthogonalOrDiagonalTileIterator iter(area_start, area_end, diagonal); for (; (tile = *iter) != INVALID_TILE; ++iter) { TileType tt = GetTileType(tile); /* Check if there is any track on tile */ switch (tt) { case MP_RAILWAY: break; case MP_STATION: if (!HasStationRail(tile)) continue; break; case MP_ROAD: if (!IsLevelCrossing(tile)) continue; if (RailNoLevelCrossings(totype)) { error.MakeError(STR_ERROR_CROSSING_DISALLOWED_RAIL); continue; } break; case MP_TUNNELBRIDGE: if (GetTunnelBridgeTransportType(tile) != TRANSPORT_RAIL) continue; break; default: continue; } /* Original railtype we are converting from */ const RailType type = GetRailType(tile); const RailType raw_secondary_type = GetTileSecondaryRailTypeIfValid(tile); const RailType secondary_type = (raw_secondary_type == INVALID_RAILTYPE) ? type : raw_secondary_type; /* Converting to the same type or converting 'hidden' elrail -> rail */ if ((type == totype || (_settings_game.vehicle.disable_elrails && totype == RAILTYPE_RAIL && type == RAILTYPE_ELECTRIC)) && (secondary_type == totype || (_settings_game.vehicle.disable_elrails && totype == RAILTYPE_RAIL && secondary_type == RAILTYPE_ELECTRIC))) continue; /* Trying to convert other's rail */ CommandCost ret = CheckTileOwnership(tile); if (ret.Failed()) { error = ret; continue; } std::vector vehicles_affected; auto find_train_reservations = [&vehicles_affected, &totype, &flags](TileIndex tile, TrackBits reserved) -> CommandCost { if (!(flags & DC_EXEC) && _settings_game.vehicle.train_braking_model != TBM_REALISTIC) { /* Nothing to do */ return CommandCost(); } Track track; while ((track = RemoveFirstTrack(&reserved)) != INVALID_TRACK) { Train *v = GetTrainForReservation(tile, track); bool check_train = false; if (v != nullptr && !HasPowerOnRail(v->railtype, totype)) { check_train = true; } else if (v != nullptr && _settings_game.vehicle.train_braking_model == TBM_REALISTIC) { RailType original = GetRailTypeByTrack(tile, track); if ((uint)(GetRailTypeInfo(original)->max_speed - 1) > (uint)(GetRailTypeInfo(totype)->max_speed - 1)) { check_train = true; } } if (check_train) { CommandCost ret = CheckTrainReservationPreventsTrackModification(v); if (ret.Failed()) return ret; /* No power on new rail type, reroute. */ if (flags & DC_EXEC) { FreeTrainTrackReservation(v); vehicles_affected.push_back(v); } } } return CommandCost(); }; auto yapf_notify_track_change = [](TileIndex tile, TrackBits tracks) { while (tracks != TRACK_BIT_NONE) { YapfNotifyTrackLayoutChange(tile, RemoveFirstTrack(&tracks)); } }; /* Vehicle on the tile when not converting Rail <-> ElRail * Tunnels and bridges have special check later */ if (tt != MP_TUNNELBRIDGE) { if (!IsCompatibleRail(type, totype) || !IsCompatibleRail(secondary_type, totype)) { CommandCost ret = IsPlainRailTile(tile) ? EnsureNoIncompatibleRailtypeTrainOnTrackBits(tile, GetTrackBits(tile), totype) : EnsureNoIncompatibleRailtypeTrainOnGround(tile, totype); if (ret.Failed()) { error = ret; continue; } } CommandCost ret = find_train_reservations(tile, GetReservedTrackbits(tile)); if (ret.Failed()) return ret; if (flags & DC_EXEC) { // we can safely convert, too /* Update the company infrastructure counters. */ if (!IsRailStationTile(tile) || !IsStationTileBlocked(tile)) { Company *c = Company::Get(GetTileOwner(tile)); uint num_pieces = IsLevelCrossingTile(tile) ? LEVELCROSSING_TRACKBIT_FACTOR : 1; if (IsPlainRailTile(tile)) { TrackBits bits = GetTrackBits(tile); if (bits == TRACK_BIT_HORZ || bits == TRACK_BIT_VERT) { c->infrastructure.rail[secondary_type]--; c->infrastructure.rail[totype]++; } else { num_pieces = CountBits(bits); if (TracksOverlap(bits)) num_pieces *= num_pieces; } } c->infrastructure.rail[type] -= num_pieces; c->infrastructure.rail[totype] += num_pieces; DirtyCompanyInfrastructureWindows(c->index); } SetRailType(tile, totype); if (IsPlainRailTile(tile)) SetSecondaryRailType(tile, totype); MarkTileDirtyByTile(tile); /* update power of train on this tile */ FindVehicleOnPos(tile, VEH_TRAIN, &affected_trains, &UpdateTrainPowerProc); } } switch (tt) { case MP_RAILWAY: switch (GetRailTileType(tile)) { case RAIL_TILE_DEPOT: if (flags & DC_EXEC) { /* notify YAPF about the track layout change */ YapfNotifyTrackLayoutChange(tile, GetRailDepotTrack(tile)); /* Update build vehicle window related to this depot */ InvalidateWindowData(WC_VEHICLE_DEPOT, tile); InvalidateWindowData(WC_BUILD_VEHICLE, tile); } found_convertible_track = true; cost.AddCost(RailConvertCost(type, totype)); break; default: // RAIL_TILE_NORMAL, RAIL_TILE_SIGNALS if (flags & DC_EXEC) { /* notify YAPF about the track layout change */ yapf_notify_track_change(tile, GetTrackBits(tile)); } found_convertible_track = true; if (raw_secondary_type != INVALID_RAILTYPE) { cost.AddCost(RailConvertCost(type, totype)); cost.AddCost(RailConvertCost(raw_secondary_type, totype)); } else { cost.AddCost(RailConvertCost(type, totype) * CountBits(GetTrackBits(tile))); } break; } break; case MP_TUNNELBRIDGE: { TileIndex endtile = GetOtherTunnelBridgeEnd(tile); /* If both ends of tunnel/bridge are in the range, do not try to convert twice - * it would cause assert because of different test and exec runs */ if (endtile < tile) { if (diagonal) { if (DiagonalTileArea(area_start, area_end).Contains(endtile)) continue; } else { if (OrthogonalTileArea(area_start, area_end).Contains(endtile)) continue; } } /* When not converting rail <-> el. rail, any vehicle cannot be in tunnel/bridge */ if (!IsCompatibleRail(type, totype) || !IsCompatibleRail(secondary_type, totype)) { CommandCost ret = EnsureNoIncompatibleRailtypeTrainOnTrackBits(tile, TRACK_BIT_MASK | TRACK_BIT_WORMHOLE, totype); if (ret.Succeeded()) { ret = EnsureNoIncompatibleRailtypeTrainOnTrackBits(endtile, TRACK_BIT_MASK | TRACK_BIT_WORMHOLE, totype); } if (ret.Failed()) { error = ret; continue; } } uint num_primary_pieces = GetTunnelBridgeLength(tile, endtile) + CountBits(GetPrimaryTunnelBridgeTrackBits(tile)) + CountBits(GetPrimaryTunnelBridgeTrackBits(endtile)); found_convertible_track = true; cost.AddCost(num_primary_pieces * RailConvertCost(type, totype)); RailType end_secondary_type = GetTileSecondaryRailTypeIfValid(endtile); if (raw_secondary_type != INVALID_RAILTYPE) cost.AddCost(RailConvertCost(raw_secondary_type, totype)); if (end_secondary_type != INVALID_RAILTYPE) cost.AddCost(RailConvertCost(end_secondary_type, totype)); CommandCost ret = find_train_reservations(tile, GetTunnelBridgeReservationTrackBits(tile)); if (ret.Failed()) return ret; ret = find_train_reservations(endtile, GetTunnelBridgeReservationTrackBits(endtile)); if (ret.Failed()) return ret; if ((uint)(GetRailTypeInfo(type)->max_speed - 1) > (uint)(GetRailTypeInfo(totype)->max_speed - 1)) { ret = CheckTrainInTunnelBridgePreventsTrackModification(tile, endtile); if (ret.Failed()) return ret; } if (flags & DC_EXEC) { SubtractRailTunnelBridgeInfrastructure(tile, endtile); SetRailType(tile, totype); SetRailType(endtile, totype); SetSecondaryRailType(tile, totype); SetSecondaryRailType(endtile, totype); FindVehicleOnPos(tile, VEH_TRAIN, &affected_trains, &UpdateTrainPowerProc); FindVehicleOnPos(endtile, VEH_TRAIN, &affected_trains, &UpdateTrainPowerProc); /* notify YAPF about the track layout change */ yapf_notify_track_change(tile, GetTunnelBridgeTrackBits(tile)); yapf_notify_track_change(endtile, GetTunnelBridgeTrackBits(endtile)); if (IsBridge(tile)) { MarkBridgeDirty(tile); } else { MarkTileDirtyByTile(tile); MarkTileDirtyByTile(endtile); } AddRailTunnelBridgeInfrastructure(tile, endtile); DirtyCompanyInfrastructureWindows(Company::Get(GetTileOwner(tile))->index); } break; } default: // MP_STATION, MP_ROAD if (flags & DC_EXEC) { Track track = ((tt == MP_STATION) ? GetRailStationTrack(tile) : GetCrossingRailTrack(tile)); YapfNotifyTrackLayoutChange(tile, track); } found_convertible_track = true; cost.AddCost(RailConvertCost(type, totype)); break; } for (uint i = 0; i < vehicles_affected.size(); ++i) { TryPathReserve(vehicles_affected[i], true); } } if (flags & DC_EXEC) { /* Railtype changed, update trains as when entering different track */ for (Train *v : affected_trains) { v->ConsistChanged(CCF_TRACK); } } return found_convertible_track ? cost : error; } /** * Convert rail on a stretch of track. * @param tile start tile of drag * @param flags operation to perform * @param p1 end tile of drag * @param p2 various bitstuffed elements * - p2 = (bit 0-5) - railroad type normal/maglev (0 = normal, 1 = mono, 2 = maglev) * - p2 = (bit 6-8) - track-orientation, valid values: 0-5 (Track enum) * @param text unused * @return the cost of this operation or an error */ CommandCost CmdConvertRailTrack(TileIndex tile, DoCommandFlag flags, uint32_t p1, uint32_t p2, const char *text) { const RailType totype = Extract(p2); const TileIndex end_tile = p1; if (!ValParamRailType(totype)) return CMD_ERROR; if (end_tile >= MapSize()) return CMD_ERROR; const Track start_track = Extract(p2); Trackdir trackdir = TrackToTrackdir(start_track); CommandCost ret = ValidateAutoDrag(&trackdir, tile, end_tile); if (ret.Failed()) return ret; TrainList affected_trains; CommandCost cost(EXPENSES_CONSTRUCTION); CommandCost error = CommandCost(STR_ERROR_NO_SUITABLE_RAILROAD_TRACK); // by default, there is no track to convert. bool found_convertible_track = false; // whether we actually did convert some track (see bug #7633) std::vector exclude_tiles; auto advance_tile = [&]() -> bool { if (tile == end_tile) return false; tile += ToTileIndexDiff(_trackdelta[trackdir]); /* toggle railbit for the non-diagonal tracks */ if (!IsDiagonalTrackdir(trackdir)) ToggleBit(trackdir, 0); return true; }; do { if (std::find(exclude_tiles.begin(), exclude_tiles.end(), tile) != exclude_tiles.end()) continue; const Track track = TrackdirToTrack(trackdir); const TileType tt = GetTileType(tile); TrackBits all_track_bits = TRACK_BIT_NONE; /* Check if our track piece matches any track on tile */ switch (tt) { case MP_RAILWAY: if (IsPlainRail(tile)) { if (!HasTrack(tile, track)) continue; all_track_bits = GetTrackBits(tile); } else if (IsRailDepot(tile)) { if (GetRailDepotTrack(tile) != track) continue; all_track_bits = TrackToTrackBits(track); } else { continue; } break; case MP_STATION: if (!HasStationRail(tile) || GetRailStationTrack(tile) != track) continue; all_track_bits = GetRailStationTrackBits(tile); break; case MP_ROAD: if (!IsLevelCrossing(tile) || GetCrossingRailTrack(tile) != track) continue; if (RailNoLevelCrossings(totype)) { error.MakeError(STR_ERROR_CROSSING_DISALLOWED_RAIL); continue; } all_track_bits = GetCrossingRailBits(tile); break; case MP_TUNNELBRIDGE: if (GetTunnelBridgeTransportType(tile) != TRANSPORT_RAIL || !HasBit(GetTunnelBridgeTrackBits(tile), track)) continue; all_track_bits = GetTunnelBridgeTrackBits(tile); break; default: continue; } /* Original railtype we are converting from */ const RailType type = GetRailTypeByTrack(tile, track); /* Converting to the same type or converting 'hidden' elrail -> rail */ if (type == totype || (_settings_game.vehicle.disable_elrails && totype == RAILTYPE_RAIL && type == RAILTYPE_ELECTRIC)) continue; /* Trying to convert other's rail */ CommandCost ret = CheckTileOwnership(tile); if (ret.Failed()) { error = ret; continue; } /* Track bits on the tile to convert */ const TrackBits track_bits = (all_track_bits == TRACK_BIT_HORZ || all_track_bits == TRACK_BIT_VERT) ? TrackToTrackBits(track) : all_track_bits; std::vector vehicles_affected; auto find_train_reservations = [&vehicles_affected, &totype, &flags](TileIndex tile, TrackBits reserved) -> CommandCost { if (!(flags & DC_EXEC) && _settings_game.vehicle.train_braking_model != TBM_REALISTIC) { /* Nothing to do */ return CommandCost(); } Track track; while ((track = RemoveFirstTrack(&reserved)) != INVALID_TRACK) { Train *v = GetTrainForReservation(tile, track); bool check_train = false; if (v != nullptr && !HasPowerOnRail(v->railtype, totype)) { check_train = true; } else if (v != nullptr && _settings_game.vehicle.train_braking_model == TBM_REALISTIC) { RailType original = GetRailTypeByTrack(tile, track); if ((uint)(GetRailTypeInfo(original)->max_speed - 1) > (uint)(GetRailTypeInfo(totype)->max_speed - 1)) { check_train = true; } } if (check_train) { CommandCost ret = CheckTrainReservationPreventsTrackModification(v); if (ret.Failed()) return ret; /* No power on new rail type, reroute. */ if (flags & DC_EXEC) { FreeTrainTrackReservation(v); vehicles_affected.push_back(v); } } } return CommandCost(); }; auto yapf_notify_track_change = [](TileIndex tile, TrackBits tracks) { while (tracks != TRACK_BIT_NONE) { YapfNotifyTrackLayoutChange(tile, RemoveFirstTrack(&tracks)); } }; /* Vehicle on the tile when not converting Rail <-> ElRail * Tunnels and bridges have special check later */ if (tt != MP_TUNNELBRIDGE) { if (!IsCompatibleRail(type, totype)) { CommandCost ret = IsPlainRailTile(tile) ? EnsureNoIncompatibleRailtypeTrainOnTrackBits(tile, track_bits, totype) : EnsureNoIncompatibleRailtypeTrainOnGround(tile, totype); if (ret.Failed()) { error = ret; continue; } } CommandCost ret = find_train_reservations(tile, GetReservedTrackbits(tile) & track_bits); if (ret.Failed()) return ret; if (flags & DC_EXEC) { // we can safely convert, too /* Update the company infrastructure counters. */ if (!IsRailStationTile(tile) || !IsStationTileBlocked(tile)) { Company *c = Company::Get(GetTileOwner(tile)); uint num_pieces = IsLevelCrossingTile(tile) ? LEVELCROSSING_TRACKBIT_FACTOR : 1; if (IsPlainRailTile(tile)) { num_pieces = CountBits(track_bits); if (TracksOverlap(track_bits)) num_pieces *= num_pieces; } c->infrastructure.rail[type] -= num_pieces; c->infrastructure.rail[totype] += num_pieces; DirtyCompanyInfrastructureWindows(c->index); } if (track_bits != all_track_bits) { /* only partially converting the tile */ if (track_bits & TRACK_BIT_RT_1) { SetRailType(tile, totype); } else { SetSecondaryRailType(tile, totype); } } else { SetRailType(tile, totype); if (IsPlainRailTile(tile)) SetSecondaryRailType(tile, totype); } MarkTileDirtyByTile(tile); /* update power of train on this tile */ UpdateTrainPowerProcData data; data.train_list = &affected_trains; data.track_bits = track_bits; FindVehicleOnPos(tile, VEH_TRAIN, &data, &UpdateTrainPowerProcOnTrackBits); } } switch (tt) { case MP_RAILWAY: switch (GetRailTileType(tile)) { case RAIL_TILE_DEPOT: if (flags & DC_EXEC) { /* notify YAPF about the track layout change */ YapfNotifyTrackLayoutChange(tile, GetRailDepotTrack(tile)); /* Update build vehicle window related to this depot */ InvalidateWindowData(WC_VEHICLE_DEPOT, tile); InvalidateWindowData(WC_BUILD_VEHICLE, tile); } found_convertible_track = true; cost.AddCost(RailConvertCost(type, totype)); break; default: // RAIL_TILE_NORMAL, RAIL_TILE_SIGNALS if (flags & DC_EXEC) { /* notify YAPF about the track layout change */ yapf_notify_track_change(tile, track_bits); } found_convertible_track = true; cost.AddCost(RailConvertCost(type, totype) * CountBits(track_bits)); break; } break; case MP_TUNNELBRIDGE: { TileIndex endtile = GetOtherTunnelBridgeEnd(tile); const bool across = (GetAcrossTunnelBridgeTrackBits(tile) & track_bits) != TRACK_BIT_NONE; if (across) exclude_tiles.push_back(endtile); /* When not converting rail <-> el. rail, any vehicle cannot be in tunnel/bridge */ if (!IsCompatibleRail(type, totype)) { CommandCost ret; if (across) { ret = EnsureNoIncompatibleRailtypeTrainOnTrackBits(tile, track_bits | TRACK_BIT_WORMHOLE, totype); if (ret.Succeeded()) { ret = EnsureNoIncompatibleRailtypeTrainOnTrackBits(endtile, GetPrimaryTunnelBridgeTrackBits(endtile) | TRACK_BIT_WORMHOLE, totype); } } else { ret = EnsureNoIncompatibleRailtypeTrainOnTrackBits(tile, track_bits, totype); } if (ret.Failed()) { error = ret; continue; } } found_convertible_track = true; if (across) { uint num_primary_pieces = GetTunnelBridgeLength(tile, endtile) + CountBits(GetPrimaryTunnelBridgeTrackBits(tile)) + CountBits(GetPrimaryTunnelBridgeTrackBits(endtile)); cost.AddCost(num_primary_pieces * RailConvertCost(type, totype)); } else { cost.AddCost(RailConvertCost(type, totype)); } CommandCost ret = find_train_reservations(tile, GetTunnelBridgeReservationTrackBits(tile) & track_bits); if (ret.Failed()) return ret; if (across) { ret = find_train_reservations(endtile, GetTunnelBridgeReservationTrackBits(endtile) & GetPrimaryTunnelBridgeTrackBits(endtile)); if (ret.Failed()) return ret; } if (across && (uint)(GetRailTypeInfo(type)->max_speed - 1) > (uint)(GetRailTypeInfo(totype)->max_speed - 1)) { ret = CheckTrainInTunnelBridgePreventsTrackModification(tile, endtile); if (ret.Failed()) return ret; } if (flags & DC_EXEC) { SubtractRailTunnelBridgeInfrastructure(tile, endtile); if (across) { SetRailType(tile, totype); SetRailType(endtile, totype); } else { SetSecondaryRailType(tile, totype); } UpdateTrainPowerProcData data; data.train_list = &affected_trains; data.track_bits = track_bits; if (across) { FindVehicleOnPos(tile, VEH_TRAIN, &data, &UpdateTrainPowerProcAcrossTunnelBridge); data.track_bits = GetPrimaryTunnelBridgeTrackBits(endtile); FindVehicleOnPos(endtile, VEH_TRAIN, &data, &UpdateTrainPowerProcAcrossTunnelBridge); } else { FindVehicleOnPos(tile, VEH_TRAIN, &data, &UpdateTrainPowerProcOnTrackBits); } /* notify YAPF about the track layout change */ yapf_notify_track_change(tile, track_bits); if (across) yapf_notify_track_change(endtile, GetPrimaryTunnelBridgeTrackBits(endtile)); if (IsBridge(tile)) { MarkBridgeDirty(tile); } else { MarkTileDirtyByTile(tile); MarkTileDirtyByTile(endtile); } AddRailTunnelBridgeInfrastructure(tile, endtile); DirtyCompanyInfrastructureWindows(Company::Get(GetTileOwner(tile))->index); } break; } default: // MP_STATION, MP_ROAD if (flags & DC_EXEC) { YapfNotifyTrackLayoutChange(tile, track); } found_convertible_track = true; cost.AddCost(RailConvertCost(type, totype)); break; } for (uint i = 0; i < vehicles_affected.size(); ++i) { TryPathReserve(vehicles_affected[i], true); } } while (advance_tile()); if (flags & DC_EXEC) { /* Railtype changed, update trains as when entering different track */ for (Train *v : affected_trains) { v->ConsistChanged(CCF_TRACK); } } return found_convertible_track ? cost : error; } static CommandCost RemoveTrainDepot(TileIndex tile, DoCommandFlag flags) { if (_current_company != OWNER_WATER) { CommandCost ret = CheckTileOwnership(tile); if (ret.Failed()) return ret; } CommandCost ret = EnsureNoVehicleOnGround(tile); if (ret.Failed()) return ret; /* read variables before the depot is removed */ DiagDirection dir = GetRailDepotDirection(tile); Train *v = nullptr; if (HasDepotReservation(tile)) { v = GetTrainForReservation(tile, DiagDirToDiagTrack(dir)); if (v != nullptr) { CommandCost ret = CheckTrainReservationPreventsTrackModification(v); if (ret.Failed()) return ret; } } if (flags & DC_EXEC) { /* read variables before the depot is removed */ Owner owner = GetTileOwner(tile); if (v != nullptr) FreeTrainTrackReservation(v); Company::Get(owner)->infrastructure.rail[GetRailType(tile)]--; DirtyCompanyInfrastructureWindows(owner); delete Depot::GetByTile(tile); DoClearSquare(tile); AddSideToSignalBuffer(tile, dir, owner); YapfNotifyTrackLayoutChange(tile, DiagDirToDiagTrack(dir)); if (v != nullptr) TryPathReserve(v, true); DeleteNewGRFInspectWindow(GSF_RAILTYPES, tile); } return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_CLEAR_DEPOT_TRAIN]); } static CommandCost ClearTile_Track(TileIndex tile, DoCommandFlag flags) { CommandCost cost(EXPENSES_CONSTRUCTION); if (flags & DC_AUTO) { if (!IsTileOwner(tile, _current_company)) { return_cmd_error(STR_ERROR_AREA_IS_OWNED_BY_ANOTHER); } if (IsPlainRail(tile)) { return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK); } else { return_cmd_error(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED); } } switch (GetRailTileType(tile)) { case RAIL_TILE_SIGNALS: if (flags & DC_EXEC) CheckRemoveSignalsFromTile(tile); // FALL THROUGH case RAIL_TILE_NORMAL: { Slope tileh = GetTileSlope(tile); /* Is there flat water on the lower halftile that gets cleared expensively? */ bool water_ground = (GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(tileh)); TrackBits tracks = GetTrackBits(tile); while (tracks != TRACK_BIT_NONE) { Track track = RemoveFirstTrack(&tracks); CommandCost ret = DoCommand(tile, 0, track, flags, CMD_REMOVE_SINGLE_RAIL); if (ret.Failed()) return ret; cost.AddCost(ret); } /* When bankrupting, don't make water dirty, there could be a ship on lower halftile. * Same holds for non-companies clearing the tile, e.g. disasters. */ if (water_ground && !(flags & DC_BANKRUPT) && Company::IsValidID(_current_company)) { CommandCost ret = EnsureNoVehicleOnGround(tile); if (ret.Failed()) return ret; if (_game_mode != GM_EDITOR && !_settings_game.construction.enable_remove_water && !(flags & DC_ALLOW_REMOVE_WATER)) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER); /* The track was removed, and left a coast tile. Now also clear the water. */ if (flags & DC_EXEC) { bool remove = IsDockingTile(tile); DoClearSquare(tile); if (remove) RemoveDockingTile(tile); InvalidateWaterRegion(tile); } cost.AddCost(_price[PR_CLEAR_WATER]); } return cost; } case RAIL_TILE_DEPOT: return RemoveTrainDepot(tile, flags); default: return CMD_ERROR; } } /** * Get surface height in point (x,y) * On tiles with halftile foundations move (x,y) to a safe point wrt. track */ static uint GetSaveSlopeZ(uint x, uint y, Track track) { switch (track) { case TRACK_UPPER: x &= ~0xF; y &= ~0xF; break; case TRACK_LOWER: x |= 0xF; y |= 0xF; break; case TRACK_LEFT: x |= 0xF; y &= ~0xF; break; case TRACK_RIGHT: x &= ~0xF; y |= 0xF; break; default: break; } return GetSlopePixelZ(x, y); } static void GetSignalXY(TileIndex tile, uint pos, bool opposite, uint &x, uint &y) { bool side; switch (_settings_game.construction.train_signal_side) { case 0: side = false; break; // left case 2: side = true; break; // right default: side = _settings_game.vehicle.road_side != 0; break; // driving side } side ^= opposite; 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} } }; x = TileX(tile) * TILE_SIZE + SignalPositions[side][pos].x; y = TileY(tile) * TILE_SIZE + SignalPositions[side][pos].y; } void DrawRestrictedSignal(SignalType type, SpriteID sprite, int x, int y, int z, int dz, int bb_offset_z) { SpriteFile *file = GetOriginFile(sprite); if (file != nullptr && (file->flags & SFF_OPENTTDGRF)) { static const SubSprite lower_part = { -50, -8, 50, 50 }; static const SubSprite upper_part = { -50, -50, 50, -9 }; static const SubSprite lower_part_plain = { -50, -5, 50, 50 }; static const SubSprite upper_part_plain = { -50, -50, 50, -6 }; AddSortableSpriteToDraw(sprite, SPR_TRACERESTRICT_BASE + 2, x, y, 1, 1, dz, z, false, 0, 0, bb_offset_z, (type == SIGTYPE_BLOCK) ? &lower_part_plain : &lower_part); AddSortableSpriteToDraw(sprite, PAL_NONE, x, y, 1, 1, dz, z, false, 0, 0, bb_offset_z, (type == SIGTYPE_BLOCK) ? &upper_part_plain : &upper_part); } else if (type == SIGTYPE_PBS || type == SIGTYPE_PBS_ONEWAY) { static const SubSprite lower_part = { -50, -10, 50, 50 }; static const SubSprite upper_part = { -50, -50, 50, -11 }; AddSortableSpriteToDraw(sprite, SPR_TRACERESTRICT_BASE, x, y, 1, 1, dz, z, false, 0, 0, bb_offset_z, &lower_part); AddSortableSpriteToDraw(sprite, PAL_NONE, x, y, 1, 1, dz, z, false, 0, 0, bb_offset_z, &upper_part); } else { AddSortableSpriteToDraw(sprite, SPR_TRACERESTRICT_BASE + (type == SIGTYPE_NO_ENTRY ? 0 : 1), x, y, 1, 1, dz, z, false, 0, 0, bb_offset_z); } } void DrawSingleSignal(TileIndex tile, const RailTypeInfo *rti, Track track, SignalState condition, SignalOffsets image, uint pos, SignalType type, SignalVariant variant, const TraceRestrictProgram *prog, CustomSignalSpriteContext context) { bool show_restricted = (prog != nullptr); if (type == SIGTYPE_NO_ENTRY) pos ^= 1; uint8_t style = 0; if (_num_new_signal_styles > 0) { switch (context.ctx_mode) { case CSSC_TRACK: style = GetSignalStyle(tile, track); break; case CSSC_TUNNEL_BRIDGE_ENTRANCE: case CSSC_TUNNEL_BRIDGE_EXIT: style = GetTunnelBridgeSignalStyle(tile); break; default: break; } } if (HasBit(_signal_style_masks.signal_both_sides, style) && ((context.ctx_flags & CSSCF_SECOND_SIGNAL) == 0)) { /* Draw second signal on opposite side */ DrawSingleSignal(tile, rti, track, condition, image, pos, type, variant, prog, { context.ctx_mode, context.ctx_flags | CSSCF_SECOND_SIGNAL }); } uint x, y; GetSignalXY(tile, pos, HasBit(_signal_style_masks.signal_opposite_side, style) != ((context.ctx_flags & CSSCF_SECOND_SIGNAL) != 0), x, y); uint8_t aspect; if (condition == SIGNAL_STATE_GREEN) { aspect = 1; if (_extra_aspects > 0) { switch (context.ctx_mode) { case CSSC_TRACK: aspect = GetSignalAspect(tile, track); break; case CSSC_TUNNEL_BRIDGE_ENTRANCE: aspect = GetTunnelBridgeEntranceSignalAspect(tile); break; case CSSC_TUNNEL_BRIDGE_EXIT: aspect = GetTunnelBridgeExitSignalAspect(tile); break; default: break; } } } else { aspect = 0; } const uint z = GetSaveSlopeZ(x, y, track); const CustomSignalSpriteResult result = GetCustomSignalSprite(rti, tile, type, variant, aspect, context, style, prog, z); SpriteID sprite = result.sprite.sprite; PaletteID pal = PAL_NONE; bool is_custom_sprite = (sprite != 0); if (sprite != 0) { sprite += image; pal = result.sprite.pal; } else if (type == SIGTYPE_PROG) { if (variant == SIG_SEMAPHORE) { sprite = SPR_PROGSIGNAL_BASE + image * 2 + condition; } else { sprite = SPR_PROGSIGNAL_BASE + 16 + image * 2 + condition; } SpriteFile *file = GetOriginFile(sprite); is_custom_sprite = !(file != nullptr && file->flags & SFF_PROGSIG); } else if (type == SIGTYPE_NO_ENTRY) { if (variant == SIG_SEMAPHORE) { sprite = SPR_EXTRASIGNAL_BASE + image; } else { sprite = SPR_EXTRASIGNAL_BASE + 8 + image; } SpriteFile *file = GetOriginFile(sprite); is_custom_sprite = !(file != nullptr && file->flags & SFF_PROGSIG); } else { /* Normal electric signals are stored in a different sprite block than all other signals. */ sprite = (type == SIGTYPE_BLOCK && variant == SIG_ELECTRIC) ? SPR_ORIGINAL_SIGNALS_BASE : SPR_SIGNALS_BASE - 16; sprite += type * 16 + variant * 64 + image * 2 + condition + (IsSignalSpritePBS(type) ? 64 : 0); SpriteFile *file = GetOriginFile(sprite); is_custom_sprite = (file != nullptr) && (file->flags & SFF_USERGRF); } if (style == 0 && (_settings_client.gui.show_all_signal_default == SSDM_ON || (is_custom_sprite && show_restricted && _settings_client.gui.show_restricted_signal_recolour && _settings_client.gui.show_all_signal_default == SSDM_RESTRICTED_RECOLOUR && !result.restricted_valid && variant == SIG_ELECTRIC))) { /* Use duplicate sprite block, instead of GRF-specified signals */ if (type == SIGTYPE_PROG) { if (variant == SIG_SEMAPHORE) { sprite = SPR_DUP_PROGSIGNAL_BASE + image * 2 + condition; } else { sprite = SPR_DUP_PROGSIGNAL_BASE + 16 + image * 2 + condition; } } else if (type == SIGTYPE_NO_ENTRY) { if (variant == SIG_SEMAPHORE) { sprite = SPR_DUP_EXTRASIGNAL_BASE + image; } else { sprite = SPR_DUP_EXTRASIGNAL_BASE + 8 + image; } } else { sprite = (type == SIGTYPE_BLOCK && variant == SIG_ELECTRIC) ? SPR_DUP_ORIGINAL_SIGNALS_BASE : SPR_DUP_SIGNALS_BASE - 16; sprite += type * 16 + variant * 64 + image * 2 + condition + (IsSignalSpritePBS(type) ? 64 : 0); } pal = PAL_NONE; is_custom_sprite = false; } if (!is_custom_sprite && show_restricted && variant == SIG_ELECTRIC && _settings_client.gui.show_restricted_signal_recolour) { DrawRestrictedSignal(type, sprite, x, y, z, BB_HEIGHT_UNDER_BRIDGE, 0); } else { AddSortableSpriteToDraw(sprite, pal, x, y, 1, 1, BB_HEIGHT_UNDER_BRIDGE, z); } const Sprite *sp = GetSprite(sprite, SpriteType::Normal, 0); if (sp->x_offs < -SIGNAL_DIRTY_LEFT || sp->x_offs + sp->width > SIGNAL_DIRTY_RIGHT || sp->y_offs < -SIGNAL_DIRTY_TOP || sp->y_offs + sp->height > SIGNAL_DIRTY_BOTTOM) { _signal_sprite_oversized = true; } } static void DrawSingleSignal(TileIndex tile, const RailTypeInfo *rti, Track track, SignalState condition, SignalOffsets image, uint pos) { SignalType type = GetSignalType(tile, track); SignalVariant variant = GetSignalVariant(tile, track); const TraceRestrictProgram *prog = IsRestrictedSignal(tile) ? GetExistingTraceRestrictProgram(tile, track) : nullptr; DrawSingleSignal(tile, rti, track, condition, image, pos, type, variant, prog, { CSSC_TRACK }); } static void GetSignalXYByTrackdir(TileIndex tile, Trackdir td, bool opposite, uint &x, uint &y) { static const uint8_t trackdir_to_pos[TRACKDIR_END] = { 8, // TRACKDIR_X_NE 10, // TRACKDIR_Y_SE 4, // TRACKDIR_UPPER_E 6, // TRACKDIR_LOWER_E 0, // TRACKDIR_LEFT_S 2, // TRACKDIR_RIGHT_S 0, // TRACKDIR_RVREV_NE 0, // TRACKDIR_RVREV_SE 9, // TRACKDIR_X_SW 11, // TRACKDIR_Y_NW 5, // TRACKDIR_UPPER_W 7, // TRACKDIR_LOWER_W 1, // TRACKDIR_LEFT_N 3, // TRACKDIR_RIGHT_N 0, // TRACKDIR_RVREV_SW 0, // TRACKDIR_RVREV_NW }; GetSignalXY(tile, trackdir_to_pos[td], opposite, x, y); } void GetSignalXYZByTrackdir(TileIndex tile, Trackdir td, bool opposite_side, uint &x, uint &y, uint &z) { GetSignalXYByTrackdir(tile, td, opposite_side, x, y); z = GetSaveSlopeZ(x, y, TrackdirToTrack(td)); } template void MarkSingleSignalDirtyIntl(TileIndex tile, Trackdir td, bool opposite, F get_z) { uint x, y; GetSignalXYByTrackdir(tile, td, opposite, x, y); Point pt = RemapCoords(x, y, get_z(x, y)); MarkAllViewportsDirty( pt.x - SIGNAL_DIRTY_LEFT, pt.y - SIGNAL_DIRTY_TOP, pt.x + SIGNAL_DIRTY_RIGHT, pt.y + SIGNAL_DIRTY_BOTTOM, VMDF_NOT_MAP_MODE ); } void MarkSingleSignalDirty(TileIndex tile, Trackdir td) { if (_signal_sprite_oversized || td >= TRACKDIR_END) { MarkTileDirtyByTile(tile, VMDF_NOT_MAP_MODE); return; } bool opposite = false; if (_signal_style_masks.signal_opposite_side != 0) { opposite = HasBit(_signal_style_masks.signal_opposite_side, GetSignalStyleGeneric(tile, TrackdirToTrack(td))); } MarkSingleSignalDirtyIntl(tile, td, opposite, [td](uint x, uint y) -> uint { return GetSaveSlopeZ(x, y, TrackdirToTrack(td)); }); if (_signal_style_masks.signal_both_sides == 0 || !HasBit(_signal_style_masks.signal_both_sides, GetSignalStyleGeneric(tile, TrackdirToTrack(td)))) return; MarkSingleSignalDirtyIntl(tile, td, !opposite, [td](uint x, uint y) -> uint { return GetSaveSlopeZ(x, y, TrackdirToTrack(td)); }); } void MarkSingleSignalDirtyAtZ(TileIndex tile, Trackdir td, bool opposite_side, uint z) { MarkSingleSignalDirtyIntl(tile, td, opposite_side, [z](uint x, uint y) -> uint { return z; }); } static uint32_t _drawtile_track_palette; /** Offsets for drawing fences */ struct FenceOffset { Corner height_ref; //!< Corner to use height offset from. int x_offs; //!< Bounding box X offset. int y_offs; //!< Bounding box Y offset. int x_size; //!< Bounding box X size. int y_size; //!< Bounding box Y size. }; /** Offsets for drawing fences */ static FenceOffset _fence_offsets[] = { { CORNER_INVALID, 0, 1, 16, 1 }, // RFO_FLAT_X_NW { CORNER_INVALID, 1, 0, 1, 16 }, // RFO_FLAT_Y_NE { CORNER_W, 8, 8, 1, 1 }, // RFO_FLAT_LEFT { CORNER_N, 8, 8, 1, 1 }, // RFO_FLAT_UPPER { CORNER_INVALID, 0, 1, 16, 1 }, // RFO_SLOPE_SW_NW { CORNER_INVALID, 1, 0, 1, 16 }, // RFO_SLOPE_SE_NE { CORNER_INVALID, 0, 1, 16, 1 }, // RFO_SLOPE_NE_NW { CORNER_INVALID, 1, 0, 1, 16 }, // RFO_SLOPE_NW_NE { CORNER_INVALID, 0, 15, 16, 1 }, // RFO_FLAT_X_SE { CORNER_INVALID, 15, 0, 1, 16 }, // RFO_FLAT_Y_SW { CORNER_E, 8, 8, 1, 1 }, // RFO_FLAT_RIGHT { CORNER_S, 8, 8, 1, 1 }, // RFO_FLAT_LOWER { CORNER_INVALID, 0, 15, 16, 1 }, // RFO_SLOPE_SW_SE { CORNER_INVALID, 15, 0, 1, 16 }, // RFO_SLOPE_SE_SW { CORNER_INVALID, 0, 15, 16, 1 }, // RFO_SLOPE_NE_SE { CORNER_INVALID, 15, 0, 1, 16 }, // RFO_SLOPE_NW_SW }; /** * Draw a track fence. * @param ti Tile drawing information. * @param base_image First fence sprite. * @param num_sprites Number of fence sprites. * @param rfo Fence to draw. */ static void DrawTrackFence(const TileInfo *ti, SpriteID base_image, uint num_sprites, RailFenceOffset rfo) { int z = ti->z; if (_fence_offsets[rfo].height_ref != CORNER_INVALID) { z += GetSlopePixelZInCorner(RemoveHalftileSlope(ti->tileh), _fence_offsets[rfo].height_ref); } AddSortableSpriteToDraw(base_image + (rfo % num_sprites), _drawtile_track_palette, ti->x + _fence_offsets[rfo].x_offs, ti->y + _fence_offsets[rfo].y_offs, _fence_offsets[rfo].x_size, _fence_offsets[rfo].y_size, 4, z); } /** * Draw fence at NW border matching the tile slope. */ static void DrawTrackFence_NW(const TileInfo *ti, SpriteID base_image, uint num_sprites) { RailFenceOffset rfo = RFO_FLAT_X_NW; if (ti->tileh & SLOPE_NW) rfo = (ti->tileh & SLOPE_W) ? RFO_SLOPE_SW_NW : RFO_SLOPE_NE_NW; DrawTrackFence(ti, base_image, num_sprites, rfo); } /** * Draw fence at SE border matching the tile slope. */ static void DrawTrackFence_SE(const TileInfo *ti, SpriteID base_image, uint num_sprites) { RailFenceOffset rfo = RFO_FLAT_X_SE; if (ti->tileh & SLOPE_SE) rfo = (ti->tileh & SLOPE_S) ? RFO_SLOPE_SW_SE : RFO_SLOPE_NE_SE; DrawTrackFence(ti, base_image, num_sprites, rfo); } /** * Draw fence at NE border matching the tile slope. */ static void DrawTrackFence_NE(const TileInfo *ti, SpriteID base_image, uint num_sprites) { RailFenceOffset rfo = RFO_FLAT_Y_NE; if (ti->tileh & SLOPE_NE) rfo = (ti->tileh & SLOPE_E) ? RFO_SLOPE_SE_NE : RFO_SLOPE_NW_NE; DrawTrackFence(ti, base_image, num_sprites, rfo); } /** * Draw fence at SW border matching the tile slope. */ static void DrawTrackFence_SW(const TileInfo *ti, SpriteID base_image, uint num_sprites) { RailFenceOffset rfo = RFO_FLAT_Y_SW; if (ti->tileh & SLOPE_SW) rfo = (ti->tileh & SLOPE_S) ? RFO_SLOPE_SE_SW : RFO_SLOPE_NW_SW; DrawTrackFence(ti, base_image, num_sprites, rfo); } /** * Draw track fences. * @param ti Tile drawing information. * @param rti Rail type information. */ void DrawTrackDetails(const TileInfo *ti, const RailTypeInfo *rti, const RailGroundType rgt) { /* Base sprite for track fences. * Note: Halftile slopes only have fences on the upper part. */ uint num_sprites = 0; SpriteID base_image = GetCustomRailSprite(rti, ti->tile, RTSG_FENCES, IsHalftileSlope(ti->tileh) ? TCX_UPPER_HALFTILE : TCX_NORMAL, &num_sprites); if (base_image == 0) { base_image = SPR_TRACK_FENCE_FLAT_X; num_sprites = 8; } assert(num_sprites > 0); switch (rgt) { case RAIL_GROUND_FENCE_NW: DrawTrackFence_NW(ti, base_image, num_sprites); break; case RAIL_GROUND_FENCE_SE: DrawTrackFence_SE(ti, base_image, num_sprites); break; case RAIL_GROUND_FENCE_SENW: DrawTrackFence_NW(ti, base_image, num_sprites); DrawTrackFence_SE(ti, base_image, num_sprites); break; case RAIL_GROUND_FENCE_NE: DrawTrackFence_NE(ti, base_image, num_sprites); break; case RAIL_GROUND_FENCE_SW: DrawTrackFence_SW(ti, base_image, num_sprites); break; case RAIL_GROUND_FENCE_NESW: DrawTrackFence_NE(ti, base_image, num_sprites); DrawTrackFence_SW(ti, base_image, num_sprites); break; case RAIL_GROUND_FENCE_VERT1: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_LEFT); break; case RAIL_GROUND_FENCE_VERT2: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_RIGHT); break; case RAIL_GROUND_FENCE_HORIZ1: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_UPPER); break; case RAIL_GROUND_FENCE_HORIZ2: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_LOWER); break; case RAIL_GROUND_WATER: { Corner track_corner; if (IsHalftileSlope(ti->tileh)) { /* Steep slope or one-corner-raised slope with halftile foundation */ track_corner = GetHalftileSlopeCorner(ti->tileh); } else { /* Three-corner-raised slope */ track_corner = OppositeCorner(GetHighestSlopeCorner(ComplementSlope(ti->tileh))); } switch (track_corner) { case CORNER_W: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_LEFT); break; case CORNER_S: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_LOWER); break; case CORNER_E: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_RIGHT); break; case CORNER_N: DrawTrackFence(ti, base_image, num_sprites, RFO_FLAT_UPPER); break; default: NOT_REACHED(); } break; } default: break; } } /* SubSprite for drawing the track halftile of 'three-corners-raised'-sloped rail sprites. */ static const int INF = 1000; // big number compared to tilesprite size static const SubSprite _halftile_sub_sprite[4] = { { -INF , -INF , 32 - 33, INF }, // CORNER_W, clip 33 pixels from right { -INF , 0 + 7, INF , INF }, // CORNER_S, clip 7 pixels from top { -31 + 33, -INF , INF , INF }, // CORNER_E, clip 33 pixels from left { -INF , -INF , INF , 30 - 23 } // CORNER_N, clip 23 pixels from bottom }; static const SubSprite _dual_track_halftile_sub_sprite[4] = { { -INF , -INF , 32 - 33, INF }, // CORNER_W, clip 33 pixels from right { -INF , 0 + 15, INF , INF }, // CORNER_S, clip 15 pixels from top { -31 + 33, -INF , INF , INF }, // CORNER_E, clip 33 pixels from left { -INF , -INF , INF , 30 - 15 } // CORNER_N, clip 15 pixels from bottom }; static inline void DrawTrackSprite(SpriteID sprite, PaletteID pal, const TileInfo *ti, Slope s) { DrawGroundSprite(sprite, pal, nullptr, 0, (ti->tileh & s) ? -8 : 0); } static RailGroundType GetRailOrBridgeGroundType(TileInfo *ti) { if (IsTileType(ti->tile, MP_TUNNELBRIDGE)) { return GetTunnelBridgeGroundType(ti->tile); } else { return GetRailGroundType(ti->tile); } } static void DrawTrackBitsOverlay(TileInfo *ti, TrackBits track, const RailTypeInfo *rti, RailGroundType rgt, bool is_bridge, Corner halftile_corner, Corner draw_half_tile) { if (halftile_corner != CORNER_INVALID) track &= ~CornerToTrackBits(halftile_corner); if (halftile_corner != CORNER_INVALID || draw_half_tile == CORNER_INVALID) { /* Draw ground */ if (rgt == RAIL_GROUND_WATER) { if (track != TRACK_BIT_NONE || IsSteepSlope(ti->tileh)) { /* three-corner-raised slope or steep slope with track on upper part */ DrawShoreTile(ti->tileh); } else { /* single-corner-raised slope with track on upper part */ DrawGroundSprite(SPR_FLAT_WATER_TILE, PAL_NONE); } } else { SpriteID image; switch (rgt) { case RAIL_GROUND_BARREN: image = SPR_FLAT_BARE_LAND; break; case RAIL_GROUND_ICE_DESERT: image = SPR_FLAT_SNOW_DESERT_TILE; break; default: image = SPR_FLAT_GRASS_TILE; break; } image += SlopeToSpriteOffset(ti->tileh); const SubSprite *sub = nullptr; if (draw_half_tile != CORNER_INVALID) sub = &(_halftile_sub_sprite[draw_half_tile]); DrawGroundSprite(image, PAL_NONE, sub); } } bool no_combine = ti->tileh == SLOPE_FLAT && HasBit(rti->flags, RTF_NO_SPRITE_COMBINE); SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY); SpriteID ground = GetCustomRailSprite(rti, ti->tile, no_combine ? RTSG_GROUND_COMPLETE : RTSG_GROUND); TrackBits pbs = TRACK_BIT_NONE; if (_settings_client.gui.show_track_reservation) { pbs = (is_bridge ? GetTunnelBridgeReservationTrackBits(ti->tile) : GetRailReservationTrackBits(ti->tile)) & track; } if (track == TRACK_BIT_NONE) { /* Half-tile foundation, no track here? */ } else if (no_combine) { /* Use trackbits as direct index from ground sprite, subtract 1 * because there is no sprite for no bits. */ DrawGroundSprite(ground + track - 1, PAL_NONE); /* Draw reserved track bits */ if (pbs & TRACK_BIT_X) DrawGroundSprite(overlay + RTO_X, PALETTE_CRASH); if (pbs & TRACK_BIT_Y) DrawGroundSprite(overlay + RTO_Y, PALETTE_CRASH); if (pbs & TRACK_BIT_UPPER) DrawTrackSprite(overlay + RTO_N, PALETTE_CRASH, ti, SLOPE_N); if (pbs & TRACK_BIT_LOWER) DrawTrackSprite(overlay + RTO_S, PALETTE_CRASH, ti, SLOPE_S); if (pbs & TRACK_BIT_RIGHT) DrawTrackSprite(overlay + RTO_E, PALETTE_CRASH, ti, SLOPE_E); if (pbs & TRACK_BIT_LEFT) DrawTrackSprite(overlay + RTO_W, PALETTE_CRASH, ti, SLOPE_W); } else if (ti->tileh == SLOPE_NW && track == TRACK_BIT_Y) { DrawGroundSprite(ground + RTO_SLOPE_NW, PAL_NONE); if (pbs != TRACK_BIT_NONE) DrawGroundSprite(overlay + RTO_SLOPE_NW, PALETTE_CRASH); } else if (ti->tileh == SLOPE_NE && track == TRACK_BIT_X) { DrawGroundSprite(ground + RTO_SLOPE_NE, PAL_NONE); if (pbs != TRACK_BIT_NONE) DrawGroundSprite(overlay + RTO_SLOPE_NE, PALETTE_CRASH); } else if (ti->tileh == SLOPE_SE && track == TRACK_BIT_Y) { DrawGroundSprite(ground + RTO_SLOPE_SE, PAL_NONE); if (pbs != TRACK_BIT_NONE) DrawGroundSprite(overlay + RTO_SLOPE_SE, PALETTE_CRASH); } else if (ti->tileh == SLOPE_SW && track == TRACK_BIT_X) { DrawGroundSprite(ground + RTO_SLOPE_SW, PAL_NONE); if (pbs != TRACK_BIT_NONE) DrawGroundSprite(overlay + RTO_SLOPE_SW, PALETTE_CRASH); } else { switch (track) { /* Draw single ground sprite when not overlapping. No track overlay * is necessary for these sprites. */ case TRACK_BIT_X: DrawGroundSprite(ground + RTO_X, PAL_NONE); break; case TRACK_BIT_Y: DrawGroundSprite(ground + RTO_Y, PAL_NONE); break; case TRACK_BIT_UPPER: DrawTrackSprite(ground + RTO_N, PAL_NONE, ti, SLOPE_N); break; case TRACK_BIT_LOWER: DrawTrackSprite(ground + RTO_S, PAL_NONE, ti, SLOPE_S); break; case TRACK_BIT_RIGHT: DrawTrackSprite(ground + RTO_E, PAL_NONE, ti, SLOPE_E); break; case TRACK_BIT_LEFT: DrawTrackSprite(ground + RTO_W, PAL_NONE, ti, SLOPE_W); break; case TRACK_BIT_CROSS: DrawGroundSprite(ground + RTO_CROSSING_XY, PAL_NONE); break; case TRACK_BIT_HORZ: DrawTrackSprite(ground + RTO_N, PAL_NONE, ti, SLOPE_N); DrawTrackSprite(ground + RTO_S, PAL_NONE, ti, SLOPE_S); break; case TRACK_BIT_VERT: DrawTrackSprite(ground + RTO_E, PAL_NONE, ti, SLOPE_E); DrawTrackSprite(ground + RTO_W, PAL_NONE, ti, SLOPE_W); break; default: /* We're drawing a junction tile */ if ((track & TRACK_BIT_3WAY_NE) == 0) { DrawGroundSprite(ground + RTO_JUNCTION_SW, PAL_NONE); } else if ((track & TRACK_BIT_3WAY_SW) == 0) { DrawGroundSprite(ground + RTO_JUNCTION_NE, PAL_NONE); } else if ((track & TRACK_BIT_3WAY_NW) == 0) { DrawGroundSprite(ground + RTO_JUNCTION_SE, PAL_NONE); } else if ((track & TRACK_BIT_3WAY_SE) == 0) { DrawGroundSprite(ground + RTO_JUNCTION_NW, PAL_NONE); } else { DrawGroundSprite(ground + RTO_JUNCTION_NSEW, PAL_NONE); } /* Mask out PBS bits as we shall draw them afterwards anyway. */ track &= ~pbs; /* Draw regular track bits */ if (track & TRACK_BIT_X) DrawGroundSprite(overlay + RTO_X, PAL_NONE); if (track & TRACK_BIT_Y) DrawGroundSprite(overlay + RTO_Y, PAL_NONE); if (track & TRACK_BIT_UPPER) DrawGroundSprite(overlay + RTO_N, PAL_NONE); if (track & TRACK_BIT_LOWER) DrawGroundSprite(overlay + RTO_S, PAL_NONE); if (track & TRACK_BIT_RIGHT) DrawGroundSprite(overlay + RTO_E, PAL_NONE); if (track & TRACK_BIT_LEFT) DrawGroundSprite(overlay + RTO_W, PAL_NONE); } /* Draw reserved track bits */ if (pbs & TRACK_BIT_X) DrawGroundSprite(overlay + RTO_X, PALETTE_CRASH); if (pbs & TRACK_BIT_Y) DrawGroundSprite(overlay + RTO_Y, PALETTE_CRASH); if (pbs & TRACK_BIT_UPPER) DrawTrackSprite(overlay + RTO_N, PALETTE_CRASH, ti, SLOPE_N); if (pbs & TRACK_BIT_LOWER) DrawTrackSprite(overlay + RTO_S, PALETTE_CRASH, ti, SLOPE_S); if (pbs & TRACK_BIT_RIGHT) DrawTrackSprite(overlay + RTO_E, PALETTE_CRASH, ti, SLOPE_E); if (pbs & TRACK_BIT_LEFT) DrawTrackSprite(overlay + RTO_W, PALETTE_CRASH, ti, SLOPE_W); } if (IsValidCorner(halftile_corner) && (draw_half_tile == halftile_corner || draw_half_tile == CORNER_INVALID)) { DrawFoundation(ti, HalftileFoundation(halftile_corner)); overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY, TCX_UPPER_HALFTILE); ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND, TCX_UPPER_HALFTILE); /* Draw higher halftile-overlay: Use the sloped sprites with three corners raised. They probably best fit the lightning. */ Slope fake_slope = SlopeWithThreeCornersRaised(OppositeCorner(halftile_corner)); SpriteID image; switch (rgt) { case RAIL_GROUND_BARREN: image = SPR_FLAT_BARE_LAND; break; case RAIL_GROUND_ICE_DESERT: case RAIL_GROUND_HALF_SNOW: image = SPR_FLAT_SNOW_DESERT_TILE; break; default: image = SPR_FLAT_GRASS_TILE; break; } image += SlopeToSpriteOffset(fake_slope); DrawGroundSprite(image, PAL_NONE, &(_halftile_sub_sprite[halftile_corner])); track = CornerToTrackBits(halftile_corner); int offset; switch (track) { default: NOT_REACHED(); case TRACK_BIT_UPPER: offset = RTO_N; break; case TRACK_BIT_LOWER: offset = RTO_S; break; case TRACK_BIT_RIGHT: offset = RTO_E; break; case TRACK_BIT_LEFT: offset = RTO_W; break; } DrawTrackSprite(ground + offset, PAL_NONE, ti, fake_slope); if (_settings_client.gui.show_track_reservation && HasReservedTracks(ti->tile, track)) { DrawTrackSprite(overlay + offset, PALETTE_CRASH, ti, fake_slope); } } } /** * Draw ground sprite and track bits * @param ti TileInfo * @param track TrackBits to draw * @param rt Rail type * @param half_tile Half tile corner */ void DrawTrackBits(TileInfo *ti, TrackBits track, RailType rt, RailGroundType rgt, bool is_bridge, Corner halftile_corner, Corner draw_half_tile) { const RailTypeInfo *rti = GetRailTypeInfo(rt); if (rti->UsesOverlay()) { DrawTrackBitsOverlay(ti, track, rti, rgt, is_bridge, halftile_corner, draw_half_tile); return; } SpriteID image; PaletteID pal = PAL_NONE; const SubSprite *sub = nullptr; bool junction = false; if (halftile_corner != CORNER_INVALID) { track &= ~CornerToTrackBits(halftile_corner); if (draw_half_tile != CORNER_INVALID) { sub = &(_halftile_sub_sprite[draw_half_tile]); } } else { if (draw_half_tile != CORNER_INVALID) { sub = &(_dual_track_halftile_sub_sprite[draw_half_tile]); } } /* Select the sprite to use. */ if (track == 0 && draw_half_tile != CORNER_INVALID) { image = 0; } else if (track == 0) { /* Clear ground (only track on halftile foundation) */ if (rgt == RAIL_GROUND_WATER) { if (IsSteepSlope(ti->tileh)) { DrawShoreTile(ti->tileh); image = 0; } else { image = SPR_FLAT_WATER_TILE; } } else { switch (rgt) { case RAIL_GROUND_BARREN: image = SPR_FLAT_BARE_LAND; break; case RAIL_GROUND_ICE_DESERT: image = SPR_FLAT_SNOW_DESERT_TILE; break; default: image = SPR_FLAT_GRASS_TILE; break; } image += SlopeToSpriteOffset(ti->tileh); } } else { if (ti->tileh != SLOPE_FLAT) { /* track on non-flat ground */ image = _track_sloped_sprites[ti->tileh - 1] + rti->base_sprites.track_y; } else { /* track on flat ground */ switch (track) { /* single track, select combined track + ground sprite*/ case TRACK_BIT_Y: image = rti->base_sprites.track_y; break; case TRACK_BIT_X: image = rti->base_sprites.track_y + 1; break; case TRACK_BIT_UPPER: image = rti->base_sprites.track_y + 2; break; case TRACK_BIT_LOWER: image = rti->base_sprites.track_y + 3; break; case TRACK_BIT_RIGHT: image = rti->base_sprites.track_y + 4; break; case TRACK_BIT_LEFT: image = rti->base_sprites.track_y + 5; break; case TRACK_BIT_CROSS: image = rti->base_sprites.track_y + 6; break; /* double diagonal track, select combined track + ground sprite*/ case TRACK_BIT_HORZ: image = rti->base_sprites.track_ns; break; case TRACK_BIT_VERT: image = rti->base_sprites.track_ns + 1; break; /* junction, select only ground sprite, handle track sprite later */ default: junction = true; if ((track & TRACK_BIT_3WAY_NE) == 0) { image = rti->base_sprites.ground; break; } if ((track & TRACK_BIT_3WAY_SW) == 0) { image = rti->base_sprites.ground + 1; break; } if ((track & TRACK_BIT_3WAY_NW) == 0) { image = rti->base_sprites.ground + 2; break; } if ((track & TRACK_BIT_3WAY_SE) == 0) { image = rti->base_sprites.ground + 3; break; } image = rti->base_sprites.ground + 4; break; } } switch (rgt) { case RAIL_GROUND_BARREN: pal = PALETTE_TO_BARE_LAND; break; case RAIL_GROUND_ICE_DESERT: image += rti->snow_offset; break; case RAIL_GROUND_WATER: { /* three-corner-raised slope */ DrawShoreTile(ti->tileh); Corner track_corner = OppositeCorner(GetHighestSlopeCorner(ComplementSlope(ti->tileh))); sub = &(_halftile_sub_sprite[track_corner]); break; } default: break; } } if (image != 0) DrawGroundSprite(image, pal, sub); /* Draw track pieces individually for junction tiles */ if (junction) { if (track & TRACK_BIT_X) DrawGroundSprite(rti->base_sprites.single_x, PAL_NONE); if (track & TRACK_BIT_Y) DrawGroundSprite(rti->base_sprites.single_y, PAL_NONE); if (track & TRACK_BIT_UPPER) DrawGroundSprite(rti->base_sprites.single_n, PAL_NONE); if (track & TRACK_BIT_LOWER) DrawGroundSprite(rti->base_sprites.single_s, PAL_NONE); if (track & TRACK_BIT_LEFT) DrawGroundSprite(rti->base_sprites.single_w, PAL_NONE); if (track & TRACK_BIT_RIGHT) DrawGroundSprite(rti->base_sprites.single_e, PAL_NONE); } /* PBS debugging, draw reserved tracks darker */ if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation) { /* Get reservation, but mask track on halftile slope */ TrackBits pbs = (is_bridge ? GetTunnelBridgeReservationTrackBits(ti->tile) : GetRailReservationTrackBits(ti->tile)) & track; if (pbs & TRACK_BIT_X) { if (ti->tileh == SLOPE_FLAT || ti->tileh == SLOPE_ELEVATED) { DrawGroundSprite(rti->base_sprites.single_x, PALETTE_CRASH); } else { DrawGroundSprite(_track_sloped_sprites[ti->tileh - 1] + rti->base_sprites.single_sloped - 20, PALETTE_CRASH); } } if (pbs & TRACK_BIT_Y) { if (ti->tileh == SLOPE_FLAT || ti->tileh == SLOPE_ELEVATED) { DrawGroundSprite(rti->base_sprites.single_y, PALETTE_CRASH); } else { DrawGroundSprite(_track_sloped_sprites[ti->tileh - 1] + rti->base_sprites.single_sloped - 20, PALETTE_CRASH); } } if (pbs & TRACK_BIT_UPPER) DrawGroundSprite(rti->base_sprites.single_n, PALETTE_CRASH, nullptr, 0, ti->tileh & SLOPE_N ? -(int)TILE_HEIGHT : 0); if (pbs & TRACK_BIT_LOWER) DrawGroundSprite(rti->base_sprites.single_s, PALETTE_CRASH, nullptr, 0, ti->tileh & SLOPE_S ? -(int)TILE_HEIGHT : 0); if (pbs & TRACK_BIT_LEFT) DrawGroundSprite(rti->base_sprites.single_w, PALETTE_CRASH, nullptr, 0, ti->tileh & SLOPE_W ? -(int)TILE_HEIGHT : 0); if (pbs & TRACK_BIT_RIGHT) DrawGroundSprite(rti->base_sprites.single_e, PALETTE_CRASH, nullptr, 0, ti->tileh & SLOPE_E ? -(int)TILE_HEIGHT : 0); } if (IsValidCorner(halftile_corner) && (draw_half_tile == halftile_corner || draw_half_tile == CORNER_INVALID)) { DrawFoundation(ti, HalftileFoundation(halftile_corner)); /* Draw higher halftile-overlay: Use the sloped sprites with three corners raised. They probably best fit the lightning. */ Slope fake_slope = SlopeWithThreeCornersRaised(OppositeCorner(halftile_corner)); image = _track_sloped_sprites[fake_slope - 1] + rti->base_sprites.track_y; pal = PAL_NONE; switch (rgt) { case RAIL_GROUND_BARREN: pal = PALETTE_TO_BARE_LAND; break; case RAIL_GROUND_ICE_DESERT: case RAIL_GROUND_HALF_SNOW: image += rti->snow_offset; break; // higher part has snow in this case too default: break; } DrawGroundSprite(image, pal, &(_halftile_sub_sprite[halftile_corner])); if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasReservedTracks(ti->tile, CornerToTrackBits(halftile_corner))) { static const uint8_t _corner_to_track_sprite[] = {3, 1, 2, 0}; DrawGroundSprite(_corner_to_track_sprite[halftile_corner] + rti->base_sprites.single_n, PALETTE_CRASH, nullptr, 0, -(int)TILE_HEIGHT); } } } void DrawTrackBits(TileInfo *ti, TrackBits track) { const bool is_bridge = IsTileType(ti->tile, MP_TUNNELBRIDGE); RailGroundType rgt = GetRailOrBridgeGroundType(ti); Foundation f = is_bridge ? FOUNDATION_LEVELED : GetRailFoundation(ti->tileh, track); Corner halftile_corner = CORNER_INVALID; if (IsNonContinuousFoundation(f)) { /* Save halftile corner */ halftile_corner = (f == FOUNDATION_STEEP_BOTH ? GetHighestSlopeCorner(ti->tileh) : GetHalftileFoundationCorner(f)); /* Draw lower part first */ f = (f == FOUNDATION_STEEP_BOTH ? FOUNDATION_STEEP_LOWER : FOUNDATION_NONE); } DrawFoundation(ti, f); /* DrawFoundation modifies ti */ RailType rt1 = GetRailType(ti->tile); RailType rt2 = GetTileSecondaryRailTypeIfValid(ti->tile); if (rt2 == INVALID_RAILTYPE || rt1 == rt2) { DrawTrackBits(ti, track, rt1, rgt, is_bridge, halftile_corner, CORNER_INVALID); } else { const bool is_bridge = IsTileType(ti->tile, MP_TUNNELBRIDGE); TrackBits primary_track = track & (is_bridge ? GetAcrossBridgePossibleTrackBits(ti->tile) : TRACK_BIT_RT_1); TrackBits secondary_track = track ^ primary_track; assert((primary_track & (TRACK_BIT_HORZ | TRACK_BIT_VERT)) == primary_track); assert((primary_track & (primary_track - 1)) == 0); Track primary = FindFirstTrack(primary_track); // TRACK_UPPER 2 -> CORNER_N 3 // TRACK_LOWER 3 -> CORNER_S 1 // TRACK_LEFT 4 -> CORNER_W 0 // TRACK_RIGHT 5 -> CORNER_E 2 Corner primary_corner = (Corner) ((0x870 >> (primary * 2)) & 3); if (halftile_corner == primary_corner) { std::swap(primary_track, secondary_track); std::swap(rt1, rt2); primary_corner = OppositeCorner(primary_corner); } if (halftile_corner == CORNER_INVALID) { // draw ground sprite SpriteID image; switch (rgt) { case RAIL_GROUND_BARREN: image = SPR_FLAT_BARE_LAND; break; case RAIL_GROUND_ICE_DESERT: image = SPR_FLAT_SNOW_DESERT_TILE; break; default: image = SPR_FLAT_GRASS_TILE; break; } image += SlopeToSpriteOffset(ti->tileh); DrawGroundSprite(image, PAL_NONE); } DrawTrackBits(ti, primary_track, rt1, rgt, is_bridge, halftile_corner, primary_corner); DrawTrackBits(ti, secondary_track, rt2, rgt, is_bridge, halftile_corner, OppositeCorner(primary_corner)); } } static void DrawSignals(TileIndex tile, TrackBits rails, const RailTypeInfo *rti) { auto MAYBE_DRAW_SIGNAL = [&](uint8_t signalbit, SignalOffsets image, uint pos, Track track) { if (IsSignalPresent(tile, signalbit)) DrawSingleSignal(tile, rti, track, GetSingleSignalState(tile, signalbit), image, pos); }; if (!(rails & TRACK_BIT_Y)) { if (!(rails & TRACK_BIT_X)) { if (rails & TRACK_BIT_LEFT) { MAYBE_DRAW_SIGNAL(2, SIGNAL_TO_NORTH, 0, TRACK_LEFT); MAYBE_DRAW_SIGNAL(3, SIGNAL_TO_SOUTH, 1, TRACK_LEFT); } if (rails & TRACK_BIT_RIGHT) { MAYBE_DRAW_SIGNAL(0, SIGNAL_TO_NORTH, 2, TRACK_RIGHT); MAYBE_DRAW_SIGNAL(1, SIGNAL_TO_SOUTH, 3, TRACK_RIGHT); } if (rails & TRACK_BIT_UPPER) { MAYBE_DRAW_SIGNAL(3, SIGNAL_TO_WEST, 4, TRACK_UPPER); MAYBE_DRAW_SIGNAL(2, SIGNAL_TO_EAST, 5, TRACK_UPPER); } if (rails & TRACK_BIT_LOWER) { MAYBE_DRAW_SIGNAL(1, SIGNAL_TO_WEST, 6, TRACK_LOWER); MAYBE_DRAW_SIGNAL(0, SIGNAL_TO_EAST, 7, TRACK_LOWER); } } else { MAYBE_DRAW_SIGNAL(3, SIGNAL_TO_SOUTHWEST, 8, TRACK_X); MAYBE_DRAW_SIGNAL(2, SIGNAL_TO_NORTHEAST, 9, TRACK_X); } } else { MAYBE_DRAW_SIGNAL(3, SIGNAL_TO_SOUTHEAST, 10, TRACK_Y); MAYBE_DRAW_SIGNAL(2, SIGNAL_TO_NORTHWEST, 11, TRACK_Y); } } static void DrawTile_Track(TileInfo *ti, DrawTileProcParams params) { const RailTypeInfo *rti = GetRailTypeInfo(GetRailType(ti->tile)); _drawtile_track_palette = COMPANY_SPRITE_COLOUR(GetTileOwner(ti->tile)); if (IsPlainRail(ti->tile)) { if (!IsBridgeAbove(ti->tile) && params.min_visible_height > std::max(SIGNAL_DIRTY_TOP, (TILE_HEIGHT + BB_HEIGHT_UNDER_BRIDGE) * ZOOM_LVL_BASE) && !_signal_sprite_oversized) return; TrackBits rails = GetTrackBits(ti->tile); DrawTrackBits(ti, rails); if (HasBit(_display_opt, DO_FULL_DETAIL)) DrawTrackDetails(ti, rti, GetRailGroundType(ti->tile)); const RailType secondary_railtype = GetTileSecondaryRailTypeIfValid(ti->tile); if (HasRailCatenaryDrawn(GetRailType(ti->tile), secondary_railtype)) DrawRailCatenary(ti); if (HasSignals(ti->tile)) { if (rails == TRACK_BIT_VERT) { const RailTypeInfo *rti2 = GetRailTypeInfo(secondary_railtype); if (IsSignalPresent(ti->tile, 2)) DrawSingleSignal(ti->tile, rti, TRACK_LEFT, GetSingleSignalState(ti->tile, 2), SIGNAL_TO_NORTH, 0); if (IsSignalPresent(ti->tile, 3)) DrawSingleSignal(ti->tile, rti, TRACK_LEFT, GetSingleSignalState(ti->tile, 3), SIGNAL_TO_SOUTH, 1); if (IsSignalPresent(ti->tile, 0)) DrawSingleSignal(ti->tile, rti2, TRACK_RIGHT, GetSingleSignalState(ti->tile, 0), SIGNAL_TO_NORTH, 2); if (IsSignalPresent(ti->tile, 1)) DrawSingleSignal(ti->tile, rti2, TRACK_RIGHT, GetSingleSignalState(ti->tile, 1), SIGNAL_TO_SOUTH, 3); } else if (rails == TRACK_BIT_HORZ) { const RailTypeInfo *rti2 = GetRailTypeInfo(secondary_railtype); if (IsSignalPresent(ti->tile, 3)) DrawSingleSignal(ti->tile, rti, TRACK_UPPER, GetSingleSignalState(ti->tile, 3), SIGNAL_TO_WEST, 4); if (IsSignalPresent(ti->tile, 2)) DrawSingleSignal(ti->tile, rti, TRACK_UPPER, GetSingleSignalState(ti->tile, 2), SIGNAL_TO_EAST, 5); if (IsSignalPresent(ti->tile, 1)) DrawSingleSignal(ti->tile, rti2, TRACK_LOWER, GetSingleSignalState(ti->tile, 1), SIGNAL_TO_WEST, 6); if (IsSignalPresent(ti->tile, 0)) DrawSingleSignal(ti->tile, rti2, TRACK_LOWER, GetSingleSignalState(ti->tile, 0), SIGNAL_TO_EAST, 7); } else { DrawSignals(ti->tile, rails, rti); } } } else { /* draw depot */ const DrawTileSprites *dts; PaletteID pal = PAL_NONE; SpriteID relocation; if (ti->tileh != SLOPE_FLAT) DrawFoundation(ti, FOUNDATION_LEVELED); if (IsInvisibilitySet(TO_BUILDINGS)) { /* Draw rail instead of depot */ dts = &_depot_invisible_gfx_table[GetRailDepotDirection(ti->tile)]; } else { dts = &_depot_gfx_table[GetRailDepotDirection(ti->tile)]; } SpriteID image; if (rti->UsesOverlay()) { image = SPR_FLAT_GRASS_TILE; } else { image = dts->ground.sprite; if (image != SPR_FLAT_GRASS_TILE) image += rti->GetRailtypeSpriteOffset(); } /* Adjust ground tile for desert and snow. */ if (IsSnowRailGround(ti->tile)) { if (image != SPR_FLAT_GRASS_TILE) { image += rti->snow_offset; // tile with tracks } else { image = SPR_FLAT_SNOW_DESERT_TILE; // flat ground } } DrawGroundSprite(image, GroundSpritePaletteTransform(image, pal, _drawtile_track_palette)); if (rti->UsesOverlay()) { SpriteID ground = GetCustomRailSprite(rti, ti->tile, RTSG_GROUND); switch (GetRailDepotDirection(ti->tile)) { case DIAGDIR_NE: if (!IsInvisibilitySet(TO_BUILDINGS)) break; [[fallthrough]]; case DIAGDIR_SW: DrawGroundSprite(ground + RTO_X, PAL_NONE); break; case DIAGDIR_NW: if (!IsInvisibilitySet(TO_BUILDINGS)) break; [[fallthrough]]; case DIAGDIR_SE: DrawGroundSprite(ground + RTO_Y, PAL_NONE); break; default: break; } if (_settings_client.gui.show_track_reservation && HasDepotReservation(ti->tile)) { SpriteID overlay = GetCustomRailSprite(rti, ti->tile, RTSG_OVERLAY); switch (GetRailDepotDirection(ti->tile)) { case DIAGDIR_NE: if (!IsInvisibilitySet(TO_BUILDINGS)) break; [[fallthrough]]; case DIAGDIR_SW: DrawGroundSprite(overlay + RTO_X, PALETTE_CRASH); break; case DIAGDIR_NW: if (!IsInvisibilitySet(TO_BUILDINGS)) break; [[fallthrough]]; case DIAGDIR_SE: DrawGroundSprite(overlay + RTO_Y, PALETTE_CRASH); break; default: break; } } } else { /* PBS debugging, draw reserved tracks darker */ if (_game_mode != GM_MENU && _settings_client.gui.show_track_reservation && HasDepotReservation(ti->tile)) { switch (GetRailDepotDirection(ti->tile)) { case DIAGDIR_NE: if (!IsInvisibilitySet(TO_BUILDINGS)) break; [[fallthrough]]; case DIAGDIR_SW: DrawGroundSprite(rti->base_sprites.single_x, PALETTE_CRASH); break; case DIAGDIR_NW: if (!IsInvisibilitySet(TO_BUILDINGS)) break; [[fallthrough]]; case DIAGDIR_SE: DrawGroundSprite(rti->base_sprites.single_y, PALETTE_CRASH); break; default: break; } } } int depot_sprite = GetCustomRailSprite(rti, ti->tile, RTSG_DEPOT); relocation = depot_sprite != 0 ? depot_sprite - SPR_RAIL_DEPOT_SE_1 : rti->GetRailtypeSpriteOffset(); if (HasRailCatenaryDrawn(GetRailType(ti->tile))) DrawRailCatenary(ti); DrawRailTileSeq(ti, dts, TO_BUILDINGS, relocation, 0, _drawtile_track_palette); } DrawBridgeMiddle(ti); } void DrawTrainDepotSprite(int x, int y, int dir, RailType railtype) { const DrawTileSprites *dts = &_depot_gfx_table[dir]; const RailTypeInfo *rti = GetRailTypeInfo(railtype); SpriteID image = rti->UsesOverlay() ? SPR_FLAT_GRASS_TILE : dts->ground.sprite; uint32_t offset = rti->GetRailtypeSpriteOffset(); if (image != SPR_FLAT_GRASS_TILE) image += offset; PaletteID palette = COMPANY_SPRITE_COLOUR(_local_company); DrawSprite(image, PAL_NONE, x, y); if (rti->UsesOverlay()) { SpriteID ground = GetCustomRailSprite(rti, INVALID_TILE, RTSG_GROUND); switch (dir) { case DIAGDIR_SW: DrawSprite(ground + RTO_X, PAL_NONE, x, y); break; case DIAGDIR_SE: DrawSprite(ground + RTO_Y, PAL_NONE, x, y); break; default: break; } } int depot_sprite = GetCustomRailSprite(rti, INVALID_TILE, RTSG_DEPOT); if (depot_sprite != 0) offset = depot_sprite - SPR_RAIL_DEPOT_SE_1; DrawRailTileSeqInGUI(x, y, dts, offset, 0, palette); } static int GetSlopePixelZ_Track(TileIndex tile, uint x, uint y, bool) { if (IsPlainRail(tile)) { auto [tileh, z] = GetTilePixelSlope(tile); if (tileh == SLOPE_FLAT) return z; z += ApplyPixelFoundationToSlope(GetRailFoundation(tileh, GetTrackBits(tile)), tileh); return z + GetPartialPixelZ(x & 0xF, y & 0xF, tileh); } else { return GetTileMaxPixelZ(tile); } } static Foundation GetFoundation_Track(TileIndex tile, Slope tileh) { return IsPlainRail(tile) ? GetRailFoundation(tileh, GetTrackBits(tile)) : FlatteningFoundation(tileh); } RailGroundType RailTrackToFence(TileIndex tile, TrackBits rail) { Owner owner = GetTileOwner(tile); uint8_t fences = 0; for (DiagDirection d = DIAGDIR_BEGIN; d < DIAGDIR_END; d++) { static const TrackBits dir_to_trackbits[DIAGDIR_END] = {TRACK_BIT_3WAY_NE, TRACK_BIT_3WAY_SE, TRACK_BIT_3WAY_SW, TRACK_BIT_3WAY_NW}; /* Track bit on this edge => no fence. */ if ((rail & dir_to_trackbits[d]) != TRACK_BIT_NONE) continue; TileIndex tile2 = tile + TileOffsByDiagDir(d); /* Show fences if it's a house, industry, object, road, tunnelbridge or not owned by us. */ if (!IsValidTile(tile2) || IsTileType(tile2, MP_HOUSE) || IsTileType(tile2, MP_INDUSTRY) || IsTileType(tile2, MP_ROAD) || (IsTileType(tile2, MP_OBJECT) && !IsObjectType(tile2, OBJECT_OWNED_LAND)) || IsTileType(tile2, MP_TUNNELBRIDGE) || !IsTileOwner(tile2, owner)) { fences |= 1 << d; } } RailGroundType new_ground; switch (fences) { case 0: new_ground = RAIL_GROUND_GRASS; break; case (1 << DIAGDIR_NE): new_ground = RAIL_GROUND_FENCE_NE; break; case (1 << DIAGDIR_SE): new_ground = RAIL_GROUND_FENCE_SE; break; case (1 << DIAGDIR_SW): new_ground = RAIL_GROUND_FENCE_SW; break; case (1 << DIAGDIR_NW): new_ground = RAIL_GROUND_FENCE_NW; break; case (1 << DIAGDIR_NE) | (1 << DIAGDIR_SW): new_ground = RAIL_GROUND_FENCE_NESW; break; case (1 << DIAGDIR_SE) | (1 << DIAGDIR_NW): new_ground = RAIL_GROUND_FENCE_SENW; break; case (1 << DIAGDIR_NE) | (1 << DIAGDIR_SE): new_ground = RAIL_GROUND_FENCE_VERT1; break; case (1 << DIAGDIR_NE) | (1 << DIAGDIR_NW): new_ground = RAIL_GROUND_FENCE_HORIZ2; break; case (1 << DIAGDIR_SE) | (1 << DIAGDIR_SW): new_ground = RAIL_GROUND_FENCE_HORIZ1; break; case (1 << DIAGDIR_SW) | (1 << DIAGDIR_NW): new_ground = RAIL_GROUND_FENCE_VERT2; break; default: NOT_REACHED(); } return new_ground; } static void TileLoop_Track(TileIndex tile) { RailGroundType old_ground = GetRailGroundType(tile); RailGroundType new_ground; if (old_ground == RAIL_GROUND_WATER) { TileLoop_Water(tile); return; } switch (_settings_game.game_creation.landscape) { case LT_ARCTIC: { auto [slope, z] = GetTileSlopeZ(tile); bool half = false; /* for non-flat track, use lower part of track * in other cases, use the highest part with track */ if (IsPlainRail(tile)) { TrackBits track = GetTrackBits(tile); Foundation f = GetRailFoundation(slope, track); switch (f) { case FOUNDATION_NONE: /* no foundation - is the track on the upper side of three corners raised tile? */ if (IsSlopeWithThreeCornersRaised(slope)) z++; break; case FOUNDATION_INCLINED_X: case FOUNDATION_INCLINED_Y: /* sloped track - is it on a steep slope? */ if (IsSteepSlope(slope)) z++; break; case FOUNDATION_STEEP_LOWER: /* only lower part of steep slope */ z++; break; default: /* if it is a steep slope, then there is a track on higher part */ if (IsSteepSlope(slope)) z++; z++; break; } half = IsInsideMM(f, FOUNDATION_STEEP_BOTH, FOUNDATION_HALFTILE_N + 1); } else { /* is the depot on a non-flat tile? */ if (slope != SLOPE_FLAT) z++; } /* 'z' is now the lowest part of the highest track bit - * for sloped track, it is 'z' of lower part * for two track bits, it is 'z' of higher track bit * For non-continuous foundations (and STEEP_BOTH), 'half' is set */ if (z > GetSnowLine()) { if (half && z - GetSnowLine() == 1) { /* track on non-continuous foundation, lower part is not under snow */ new_ground = RAIL_GROUND_HALF_SNOW; } else { new_ground = RAIL_GROUND_ICE_DESERT; } goto set_ground; } break; } case LT_TROPIC: if (GetTropicZone(tile) == TROPICZONE_DESERT) { new_ground = RAIL_GROUND_ICE_DESERT; goto set_ground; } break; } new_ground = RAIL_GROUND_GRASS; if (IsPlainRail(tile) && old_ground != RAIL_GROUND_BARREN) { // wait until bottom is green /* determine direction of fence */ TrackBits rail = GetTrackBits(tile); new_ground = RailTrackToFence(tile, rail); } set_ground: if (old_ground != new_ground) { SetRailGroundType(tile, new_ground); MarkTileDirtyByTile(tile, VMDF_NOT_MAP_MODE); } } static TrackStatus GetTileTrackStatus_Track(TileIndex tile, TransportType mode, uint sub_mode, DiagDirection side) { /* Case of half tile slope with water. */ if (mode == TRANSPORT_WATER && IsPlainRail(tile) && GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(GetTileSlope(tile))) { TrackBits tb = GetTrackBits(tile); switch (tb) { default: NOT_REACHED(); case TRACK_BIT_UPPER: tb = TRACK_BIT_LOWER; break; case TRACK_BIT_LOWER: tb = TRACK_BIT_UPPER; break; case TRACK_BIT_LEFT: tb = TRACK_BIT_RIGHT; break; case TRACK_BIT_RIGHT: tb = TRACK_BIT_LEFT; break; } return CombineTrackStatus(TrackBitsToTrackdirBits(tb), TRACKDIR_BIT_NONE); } if (mode != TRANSPORT_RAIL) return 0; TrackBits trackbits = TRACK_BIT_NONE; TrackdirBits red_signals = TRACKDIR_BIT_NONE; switch (GetRailTileType(tile)) { default: NOT_REACHED(); case RAIL_TILE_NORMAL: trackbits = GetTrackBits(tile); break; case RAIL_TILE_SIGNALS: { trackbits = GetTrackBits(tile); if (sub_mode & TTSSM_NO_RED_SIGNALS) break; uint8_t a = GetPresentSignals(tile); uint b = GetSignalStates(tile); b &= a; /* When signals are not present (in neither direction), * we pretend them to be green. Otherwise, it depends on * the signal type. For signals that are only active from * one side, we set the missing signals explicitly to * `green'. Otherwise, they implicitly become `red'. */ if (!IsOnewaySignal(tile, TRACK_UPPER) || (a & SignalOnTrack(TRACK_UPPER)) == 0) b |= ~a & SignalOnTrack(TRACK_UPPER); if (!IsOnewaySignal(tile, TRACK_LOWER) || (a & SignalOnTrack(TRACK_LOWER)) == 0) b |= ~a & SignalOnTrack(TRACK_LOWER); if ((b & 0x8) == 0) red_signals |= (TRACKDIR_BIT_LEFT_N | TRACKDIR_BIT_X_NE | TRACKDIR_BIT_Y_SE | TRACKDIR_BIT_UPPER_E); if ((b & 0x4) == 0) red_signals |= (TRACKDIR_BIT_LEFT_S | TRACKDIR_BIT_X_SW | TRACKDIR_BIT_Y_NW | TRACKDIR_BIT_UPPER_W); if ((b & 0x2) == 0) red_signals |= (TRACKDIR_BIT_RIGHT_N | TRACKDIR_BIT_LOWER_E); if ((b & 0x1) == 0) red_signals |= (TRACKDIR_BIT_RIGHT_S | TRACKDIR_BIT_LOWER_W); break; } case RAIL_TILE_DEPOT: { DiagDirection dir = GetRailDepotDirection(tile); if (side != INVALID_DIAGDIR && side != dir) break; trackbits = DiagDirToDiagTrackBits(dir); break; } } return CombineTrackStatus(TrackBitsToTrackdirBits(trackbits), red_signals); } static bool ClickTile_Track(TileIndex tile) { if (_ctrl_pressed && IsPlainRailTile(tile)) { TrackBits trackbits = TrackdirBitsToTrackBits(GetTileTrackdirBits(tile, TRANSPORT_RAIL, 0)); if (trackbits & TRACK_BIT_VERT) { // N-S direction trackbits = (_tile_fract_coords.x <= _tile_fract_coords.y) ? TRACK_BIT_RIGHT : TRACK_BIT_LEFT; } if (trackbits & TRACK_BIT_HORZ) { // E-W direction trackbits = (_tile_fract_coords.x + _tile_fract_coords.y <= 15) ? TRACK_BIT_UPPER : TRACK_BIT_LOWER; } Track track = FindFirstTrack(trackbits); if (HasTrack(tile, track) && HasSignalOnTrack(tile, track)) { const bool programmable = IsPresignalProgrammable(tile, track); if (GetExistingTraceRestrictProgram(tile, track) != nullptr || !programmable) { ShowTraceRestrictProgramWindow(tile, track); } if (programmable) { ShowSignalProgramWindow(SignalReference(tile, track)); } return true; } } if (!IsRailDepot(tile)) return false; ShowDepotWindow(tile, VEH_TRAIN); return true; } static void GetTileDesc_Track(TileIndex tile, TileDesc *td) { RailType rt = GetRailType(tile); const RailTypeInfo *rti = GetRailTypeInfo(rt); td->rail_speed = rti->max_speed; td->railtype = rti->strings.name; RailType secondary_rt = GetTileSecondaryRailTypeIfValid(tile); if (secondary_rt != rt && secondary_rt != INVALID_RAILTYPE) { const RailTypeInfo *secondary_rti = GetRailTypeInfo(secondary_rt); td->rail_speed2 = secondary_rti->max_speed; td->railtype2 = secondary_rti->strings.name; } td->owner[0] = GetTileOwner(tile); switch (GetRailTileType(tile)) { case RAIL_TILE_NORMAL: td->str = STR_LAI_RAIL_DESCRIPTION_TRACK; break; case RAIL_TILE_SIGNALS: { static const StringID signal_type[8][8] = { { STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_SIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_PRESIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_EXITSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_COMBOSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_PBSSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_NOENTRYSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_PROGSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_NOENTRY2SIGNALS }, { STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_PRESIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRESIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_EXITSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_COMBOSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_PBSSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_NOENTRYSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_PROGSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_NOENTRY2SIGNALS }, { STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_EXITSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_EXITSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXITSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_COMBOSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_PBSSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_NOENTRYSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_PROGSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_NOENTRY2SIGNALS }, { STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_COMBOSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_COMBOSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_COMBOSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBOSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_PBSSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_NOENTRYSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_PROGSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_NOENTRY2SIGNALS }, { STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_PBSSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_PBSSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_PBSSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_PBSSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PBSSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PBS_NOENTRYSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PBS_PROGSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PBS_NOENTRY2SIGNALS }, { STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_NOENTRYSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_NOENTRYSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_NOENTRYSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_NOENTRYSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PBS_NOENTRYSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NOENTRYSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NOENTRY_PROGSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NOENTRY_NOENTRY2SIGNALS }, { STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_PROGSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_PROGSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_PROGSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_PROGSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PBS_PROGSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NOENTRY_PROGSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PROGSIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PROG_NOENTRY2SIGNALS }, { STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NORMAL_NOENTRY2SIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PRE_NOENTRY2SIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_EXIT_NOENTRY2SIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_COMBO_NOENTRY2SIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PBS_NOENTRY2SIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NOENTRY_NOENTRY2SIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_PROG_NOENTRY2SIGNALS, STR_LAI_RAIL_DESCRIPTION_TRACK_WITH_NOENTRY2SIGNALS } }; SignalType primary_signal; SignalType secondary_signal; int primary_style = -1; int secondary_style = -1; if (HasSignalOnTrack(tile, TRACK_UPPER)) { primary_signal = GetSignalType(tile, TRACK_UPPER); primary_style = GetSignalStyle(tile, TRACK_UPPER); if (HasSignalOnTrack(tile, TRACK_LOWER)) { secondary_signal = GetSignalType(tile, TRACK_LOWER); secondary_style = GetSignalStyle(tile, TRACK_LOWER); } else { secondary_signal = primary_signal; } } else { secondary_signal = primary_signal = GetSignalType(tile, TRACK_LOWER); primary_style = GetSignalStyle(tile, TRACK_LOWER); } td->str = signal_type[secondary_signal][primary_signal]; if (primary_style > 0 || secondary_style > 0) { /* Add suffix about signal style */ td->dparam[0] = td->str; td->dparam[1] = primary_style == 0 ? STR_BUILD_SIGNAL_DEFAULT_STYLE : _new_signal_styles[primary_style - 1].name; if (secondary_style >= 0) { td->dparam[2] = secondary_style == 0 ? STR_BUILD_SIGNAL_DEFAULT_STYLE : _new_signal_styles[secondary_style - 1].name; td->str = STR_LAI_RAIL_DESCRIPTION_TRACK_SIGNAL_STYLE2; } else { td->str = STR_LAI_RAIL_DESCRIPTION_TRACK_SIGNAL_STYLE; } } if (IsRestrictedSignal(tile)) { td->dparam[3] = td->dparam[2]; td->dparam[2] = td->dparam[1]; td->dparam[1] = td->dparam[0]; td->dparam[0] = td->str; td->str = STR_LAI_RAIL_DESCRIPTION_RESTRICTED_SIGNAL; } break; } case RAIL_TILE_DEPOT: td->str = STR_LAI_RAIL_DESCRIPTION_TRAIN_DEPOT; if (_settings_game.vehicle.train_acceleration_model != AM_ORIGINAL) { if (td->rail_speed > 0) { td->rail_speed = std::min(td->rail_speed, _settings_game.vehicle.rail_depot_speed_limit); } else { td->rail_speed = _settings_game.vehicle.rail_depot_speed_limit; } } td->build_date = Depot::GetByTile(tile)->build_date; break; default: NOT_REACHED(); } } static void ChangeTileOwner_Track(TileIndex tile, Owner old_owner, Owner new_owner) { if (!IsTileOwner(tile, old_owner)) return; if (new_owner != INVALID_OWNER) { /* Update company infrastructure counts. No need to dirty windows here, we'll redraw the whole screen anyway. */ uint num_pieces = 1; if (IsPlainRail(tile)) { TrackBits bits = GetTrackBits(tile); if (bits == TRACK_BIT_HORZ || bits == TRACK_BIT_VERT) { RailType secondary_rt = GetSecondaryRailType(tile); Company::Get(old_owner)->infrastructure.rail[secondary_rt]--; Company::Get(new_owner)->infrastructure.rail[secondary_rt]++; } else { num_pieces = CountBits(bits); if (TracksOverlap(bits)) num_pieces *= num_pieces; } } RailType rt = GetRailType(tile); Company::Get(old_owner)->infrastructure.rail[rt] -= num_pieces; Company::Get(new_owner)->infrastructure.rail[rt] += num_pieces; if (HasSignals(tile)) { uint num_sigs = CountBits(GetPresentSignals(tile)); Company::Get(old_owner)->infrastructure.signal -= num_sigs; Company::Get(new_owner)->infrastructure.signal += num_sigs; } SetTileOwner(tile, new_owner); } else { DoCommand(tile, 0, 0, DC_EXEC | DC_BANKRUPT, CMD_LANDSCAPE_CLEAR); } } static const uint8_t _fractcoords_behind[4] = { 0x8F, 0x8, 0x80, 0xF8 }; static const uint8_t _fractcoords_enter[4] = { 0x8A, 0x48, 0x84, 0xA8 }; static const int8_t _deltacoord_leaveoffset[8] = { -1, 0, 1, 0, /* x */ 0, 1, 0, -1 /* y */ }; /** * Compute number of ticks when next wagon will leave a depot. * Negative means next wagon should have left depot n ticks before. * @param v vehicle outside (leaving) the depot * @return number of ticks when the next wagon will leave */ int TicksToLeaveDepot(const Train *v) { DiagDirection dir = GetRailDepotDirection(v->tile); int length = v->CalcNextVehicleOffset(); switch (dir) { case DIAGDIR_NE: return ((int)(v->x_pos & 0x0F) - ((_fractcoords_enter[dir] & 0x0F) - (length + 1))); case DIAGDIR_SE: return -((int)(v->y_pos & 0x0F) - ((_fractcoords_enter[dir] >> 4) + (length + 1))); case DIAGDIR_SW: return -((int)(v->x_pos & 0x0F) - ((_fractcoords_enter[dir] & 0x0F) + (length + 1))); case DIAGDIR_NW: return ((int)(v->y_pos & 0x0F) - ((_fractcoords_enter[dir] >> 4) - (length + 1))); default: NOT_REACHED(); } } /** * Tile callback routine when vehicle enters tile * @see vehicle_enter_tile_proc */ static VehicleEnterTileStatus VehicleEnter_Track(Vehicle *u, TileIndex tile, int x, int y) { /* This routine applies only to trains in depot tiles. */ if (u->type != VEH_TRAIN || !IsRailDepotTile(tile)) return VETSB_CONTINUE; Train *v = Train::From(u); auto abort_load_through = [&](bool leave_station) { if (_local_company == v->owner) { SetDParam(0, v->index); SetDParam(1, v->current_order.GetDestination()); AddNewsItem(STR_VEHICLE_LOAD_THROUGH_ABORTED_DEPOT, NT_ADVICE, NF_INCOLOUR | NF_SMALL | NF_VEHICLE_PARAM0, NR_VEHICLE, v->index, NR_STATION, v->current_order.GetDestination()); } if (leave_station) { v->LeaveStation(); /* Only advance to next order if we are loading at the current one */ const Order *order = v->GetOrder(v->cur_implicit_order_index); if (order != nullptr && order->IsType(OT_GOTO_STATION) && order->GetDestination() == v->last_station_visited) { v->IncrementImplicitOrderIndex(); } } else { for (Train *u = v; u != nullptr; u = u->Next()) { ClrBit(u->flags, VRF_BEYOND_PLATFORM_END); } } }; if (v->IsFrontEngine() && v->current_order.IsType(OT_LOADING_ADVANCE)) abort_load_through(true); /* Depot direction. */ DiagDirection dir = GetRailDepotDirection(tile); /* Calculate the point where the following wagon should be activated. */ int length = v->CalcNextVehicleOffset(); uint8_t 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); uint8_t 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 VETSB_CANNOT_ENTER; } else if (_fractcoords_enter[dir] == fract_coord) { if (DiagDirToDir(ReverseDiagDir(dir)) == v->direction) { /* enter the depot */ if (v->IsFrontEngine()) { if (v->current_order.IsType(OT_LOADING_ADVANCE)) { abort_load_through(true); } else if (HasBit(v->flags, VRF_BEYOND_PLATFORM_END)) { abort_load_through(false); } SetBit(v->flags, VRF_CONSIST_SPEED_REDUCTION); } v->track = TRACK_BIT_DEPOT, v->vehstatus |= VS_HIDDEN; // hide it v->UpdateIsDrawn(); v->direction = ReverseDir(v->direction); if (v->Next() == nullptr) VehicleEnterDepot(v->First()); v->tile = tile; InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile); return VETSB_ENTERED_WORMHOLE; } } else if (fract_coord_leave == fract_coord) { if (DiagDirToDir(dir) == v->direction) { /* leave the depot? */ if ((v = v->Next()) != nullptr) { v->vehstatus &= ~VS_HIDDEN; v->track = (DiagDirToAxis(dir) == AXIS_X ? TRACK_BIT_X : TRACK_BIT_Y); v->UpdateIsDrawn(); } } } return VETSB_CONTINUE; } /** * Tests if autoslope is allowed. * * @param tile The tile. * @param flags Terraform command flags. * @param z_old Old TileZ. * @param tileh_old Old TileSlope. * @param z_new New TileZ. * @param tileh_new New TileSlope. * @param rail_bits Trackbits. */ static CommandCost TestAutoslopeOnRailTile(TileIndex tile, uint flags, int z_old, Slope tileh_old, int z_new, Slope tileh_new, TrackBits rail_bits) { if (!_settings_game.construction.build_on_slopes || !AutoslopeEnabled()) return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK); /* Is the slope-rail_bits combination valid in general? I.e. is it safe to call GetRailFoundation() ? */ if (CheckRailSlope(tileh_new, rail_bits, TRACK_BIT_NONE, tile).Failed()) return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK); /* Get the slopes on top of the foundations */ z_old += ApplyFoundationToSlope(GetRailFoundation(tileh_old, rail_bits), tileh_old); z_new += ApplyFoundationToSlope(GetRailFoundation(tileh_new, rail_bits), tileh_new); Corner track_corner; switch (rail_bits) { case TRACK_BIT_LEFT: track_corner = CORNER_W; break; case TRACK_BIT_LOWER: track_corner = CORNER_S; break; case TRACK_BIT_RIGHT: track_corner = CORNER_E; break; case TRACK_BIT_UPPER: track_corner = CORNER_N; break; /* Surface slope must not be changed */ default: if (z_old != z_new || tileh_old != tileh_new) return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK); return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]); } /* The height of the track_corner must not be changed. The rest ensures GetRailFoundation() already. */ z_old += GetSlopeZInCorner(RemoveHalftileSlope(tileh_old), track_corner); z_new += GetSlopeZInCorner(RemoveHalftileSlope(tileh_new), track_corner); if (z_old != z_new) return_cmd_error(STR_ERROR_MUST_REMOVE_RAILROAD_TRACK); CommandCost cost = CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]); /* Make the ground dirty, if surface slope has changed */ if (tileh_old != tileh_new) { /* If there is flat water on the lower halftile add the cost for clearing it */ if (GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(tileh_old)) { if (_game_mode != GM_EDITOR && !_settings_game.construction.enable_remove_water && !(flags & DC_ALLOW_REMOVE_WATER)) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER); cost.AddCost(_price[PR_CLEAR_WATER]); } if ((flags & DC_EXEC) != 0) SetRailGroundType(tile, RAIL_GROUND_BARREN); } return cost; } /** * Test-procedure for HasVehicleOnPos to check for a ship. */ static Vehicle *EnsureNoShipProc(Vehicle *v, void *) { return v; } static CommandCost TerraformTile_Track(TileIndex tile, DoCommandFlag flags, int z_new, Slope tileh_new) { auto [tileh_old, z_old] = GetTileSlopeZ(tile); if (IsPlainRail(tile)) { TrackBits rail_bits = GetTrackBits(tile); /* Is there flat water on the lower halftile that must be cleared expensively? */ bool was_water = (GetRailGroundType(tile) == RAIL_GROUND_WATER && IsSlopeWithOneCornerRaised(tileh_old)); /* Allow clearing the water only if there is no ship */ if (was_water && HasVehicleOnPos(tile, VEH_SHIP, nullptr, &EnsureNoShipProc)) return_cmd_error(STR_ERROR_SHIP_IN_THE_WAY); if (was_water && _game_mode != GM_EDITOR && !_settings_game.construction.enable_remove_water && !(flags & DC_ALLOW_REMOVE_WATER)) return_cmd_error(STR_ERROR_CAN_T_BUILD_ON_WATER); /* First test autoslope. However if it succeeds we still have to test the rest, because non-autoslope terraforming is cheaper. */ CommandCost autoslope_result = TestAutoslopeOnRailTile(tile, flags, z_old, tileh_old, z_new, tileh_new, rail_bits); /* When there is only a single horizontal/vertical track, one corner can be terraformed. */ Corner allowed_corner; switch (rail_bits) { case TRACK_BIT_RIGHT: allowed_corner = CORNER_W; break; case TRACK_BIT_UPPER: allowed_corner = CORNER_S; break; case TRACK_BIT_LEFT: allowed_corner = CORNER_E; break; case TRACK_BIT_LOWER: allowed_corner = CORNER_N; break; default: return autoslope_result; } Foundation f_old = GetRailFoundation(tileh_old, rail_bits); /* Do not allow terraforming if allowed_corner is part of anti-zig-zag foundations */ if (tileh_old != SLOPE_NS && tileh_old != SLOPE_EW && IsSpecialRailFoundation(f_old)) return autoslope_result; /* Everything is valid, which only changes allowed_corner */ for (Corner corner = (Corner)0; corner < CORNER_END; corner = (Corner)(corner + 1)) { if (allowed_corner == corner) continue; if (z_old + GetSlopeZInCorner(tileh_old, corner) != z_new + GetSlopeZInCorner(tileh_new, corner)) return autoslope_result; } /* Make the ground dirty */ if ((flags & DC_EXEC) != 0) SetRailGroundType(tile, RAIL_GROUND_BARREN); /* allow terraforming */ return CommandCost(EXPENSES_CONSTRUCTION, was_water ? _price[PR_CLEAR_WATER] : (Money)0); } else if (_settings_game.construction.build_on_slopes && AutoslopeEnabled() && AutoslopeCheckForEntranceEdge(tile, z_new, tileh_new, GetRailDepotDirection(tile))) { return CommandCost(EXPENSES_CONSTRUCTION, _price[PR_BUILD_FOUNDATION]); } return DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); } extern const TileTypeProcs _tile_type_rail_procs = { DrawTile_Track, // draw_tile_proc GetSlopePixelZ_Track, // get_slope_z_proc ClearTile_Track, // clear_tile_proc nullptr, // add_accepted_cargo_proc GetTileDesc_Track, // get_tile_desc_proc GetTileTrackStatus_Track, // get_tile_track_status_proc ClickTile_Track, // click_tile_proc nullptr, // animate_tile_proc TileLoop_Track, // tile_loop_proc ChangeTileOwner_Track, // change_tile_owner_proc nullptr, // add_produced_cargo_proc VehicleEnter_Track, // vehicle_enter_tile_proc GetFoundation_Track, // get_foundation_proc TerraformTile_Track, // terraform_tile_proc };