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Diffstat (limited to 'src/pathfinder/yapf/follow_track.hpp')
| -rw-r--r-- | src/pathfinder/yapf/follow_track.hpp | 451 |
1 files changed, 0 insertions, 451 deletions
diff --git a/src/pathfinder/yapf/follow_track.hpp b/src/pathfinder/yapf/follow_track.hpp deleted file mode 100644 index d1ad1c199..000000000 --- a/src/pathfinder/yapf/follow_track.hpp +++ /dev/null @@ -1,451 +0,0 @@ -/* $Id$ */ - -/* - * 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 <http://www.gnu.org/licenses/>. - */ - -/** @file follow_track.hpp Template function for track followers */ - -#ifndef FOLLOW_TRACK_HPP -#define FOLLOW_TRACK_HPP - -#include "yapf.hpp" -#include "../../depot_map.h" -#include "../../roadveh.h" -#include "../../train.h" - -/** Track follower helper template class (can serve pathfinders and vehicle - * controllers). See 6 different typedefs below for 3 different transport - * types w/ or w/o 90-deg turns allowed */ -template <TransportType Ttr_type_, typename VehicleType, bool T90deg_turns_allowed_ = true, bool Tmask_reserved_tracks = false> -struct CFollowTrackT -{ - enum ErrorCode { - EC_NONE, - EC_OWNER, - EC_RAIL_TYPE, - EC_90DEG, - EC_NO_WAY, - EC_RESERVED, - }; - - const VehicleType *m_veh; ///< moving vehicle - Owner m_veh_owner; ///< owner of the vehicle - TileIndex m_old_tile; ///< the origin (vehicle moved from) before move - Trackdir m_old_td; ///< the trackdir (the vehicle was on) before move - TileIndex m_new_tile; ///< the new tile (the vehicle has entered) - TrackdirBits m_new_td_bits; ///< the new set of available trackdirs - DiagDirection m_exitdir; ///< exit direction (leaving the old tile) - bool m_is_tunnel; ///< last turn passed tunnel - bool m_is_bridge; ///< last turn passed bridge ramp - bool m_is_station; ///< last turn passed station - int m_tiles_skipped; ///< number of skipped tunnel or station tiles - ErrorCode m_err; - CPerformanceTimer *m_pPerf; - RailTypes m_railtypes; - - FORCEINLINE CFollowTrackT(const VehicleType *v = NULL, RailTypes railtype_override = INVALID_RAILTYPES, CPerformanceTimer *pPerf = NULL) - { - Init(v, railtype_override, pPerf); - } - - FORCEINLINE CFollowTrackT(Owner o, RailTypes railtype_override = INVALID_RAILTYPES, CPerformanceTimer *pPerf = NULL) - { - m_veh = NULL; - Init(o, railtype_override, pPerf); - } - - FORCEINLINE void Init(const VehicleType *v, RailTypes railtype_override, CPerformanceTimer *pPerf) - { - assert(!IsRailTT() || (v != NULL && v->type == VEH_TRAIN)); - m_veh = v; - Init(v != NULL ? v->owner : INVALID_OWNER, IsRailTT() && railtype_override == INVALID_RAILTYPES ? Train::From(v)->compatible_railtypes : railtype_override, pPerf); - } - - FORCEINLINE void Init(Owner o, RailTypes railtype_override, CPerformanceTimer *pPerf) - { - assert((!IsRoadTT() || m_veh != NULL) && (!IsRailTT() || railtype_override != INVALID_RAILTYPES)); - m_veh_owner = o; - m_pPerf = pPerf; - /* don't worry, all is inlined so compiler should remove unnecessary initializations */ - m_new_tile = INVALID_TILE; - m_new_td_bits = TRACKDIR_BIT_NONE; - m_exitdir = INVALID_DIAGDIR; - m_is_station = m_is_bridge = m_is_tunnel = false; - m_tiles_skipped = 0; - m_err = EC_NONE; - m_railtypes = railtype_override; - } - - FORCEINLINE static TransportType TT() {return Ttr_type_;} - FORCEINLINE static bool IsWaterTT() {return TT() == TRANSPORT_WATER;} - FORCEINLINE static bool IsRailTT() {return TT() == TRANSPORT_RAIL;} - FORCEINLINE bool IsTram() {return IsRoadTT() && HasBit(RoadVehicle::From(m_veh)->compatible_roadtypes, ROADTYPE_TRAM);} - FORCEINLINE static bool IsRoadTT() {return TT() == TRANSPORT_ROAD;} - FORCEINLINE static bool Allow90degTurns() {return T90deg_turns_allowed_;} - FORCEINLINE static bool DoTrackMasking() {return IsRailTT() && Tmask_reserved_tracks;} - - /** Tests if a tile is a road tile with a single tramtrack (tram can reverse) */ - FORCEINLINE DiagDirection GetSingleTramBit(TileIndex tile) - { - assert(IsTram()); // this function shouldn't be called in other cases - - if (IsNormalRoadTile(tile)) { - RoadBits rb = GetRoadBits(tile, ROADTYPE_TRAM); - switch (rb) { - case ROAD_NW: return DIAGDIR_NW; - case ROAD_SW: return DIAGDIR_SW; - case ROAD_SE: return DIAGDIR_SE; - case ROAD_NE: return DIAGDIR_NE; - default: break; - } - } - return INVALID_DIAGDIR; - } - - /** main follower routine. Fills all members and return true on success. - * Otherwise returns false if track can't be followed. */ - inline bool Follow(TileIndex old_tile, Trackdir old_td) - { - m_old_tile = old_tile; - m_old_td = old_td; - m_err = EC_NONE; - assert(((TrackStatusToTrackdirBits(GetTileTrackStatus(m_old_tile, TT(), IsRoadTT() && m_veh != NULL ? RoadVehicle::From(m_veh)->compatible_roadtypes : 0)) & TrackdirToTrackdirBits(m_old_td)) != 0) || - (IsTram() && GetSingleTramBit(m_old_tile) != INVALID_DIAGDIR)); // Disable the assertion for single tram bits - m_exitdir = TrackdirToExitdir(m_old_td); - if (ForcedReverse()) return true; - if (!CanExitOldTile()) return false; - FollowTileExit(); - if (!QueryNewTileTrackStatus()) return TryReverse(); - if (!CanEnterNewTile()) return false; - m_new_td_bits &= DiagdirReachesTrackdirs(m_exitdir); - if (m_new_td_bits == TRACKDIR_BIT_NONE) { - m_err = EC_NO_WAY; - return false; - } - if (!Allow90degTurns()) { - m_new_td_bits &= (TrackdirBits)~(int)TrackdirCrossesTrackdirs(m_old_td); - if (m_new_td_bits == TRACKDIR_BIT_NONE) { - m_err = EC_90DEG; - return false; - } - } - return true; - } - - inline bool MaskReservedTracks() - { - if (!DoTrackMasking()) return true; - - if (m_is_station) { - /* Check skipped station tiles as well. */ - TileIndexDiff diff = TileOffsByDiagDir(m_exitdir); - for (TileIndex tile = m_new_tile - diff * m_tiles_skipped; tile != m_new_tile; tile += diff) { - if (HasStationReservation(tile)) { - m_new_td_bits = TRACKDIR_BIT_NONE; - m_err = EC_RESERVED; - return false; - } - } - } - - TrackBits reserved = GetReservedTrackbits(m_new_tile); - /* Mask already reserved trackdirs. */ - m_new_td_bits &= ~TrackBitsToTrackdirBits(reserved); - /* Mask out all trackdirs that conflict with the reservation. */ - uint bits = (uint)TrackdirBitsToTrackBits(m_new_td_bits); - int i; - FOR_EACH_SET_BIT(i, bits) { - if (TracksOverlap(reserved | TrackToTrackBits((Track)i))) m_new_td_bits &= ~TrackToTrackdirBits((Track)i); - } - if (m_new_td_bits == TRACKDIR_BIT_NONE) { - m_err = EC_RESERVED; - return false; - } - return true; - } - -protected: - /** Follow the m_exitdir from m_old_tile and fill m_new_tile and m_tiles_skipped */ - FORCEINLINE void FollowTileExit() - { - m_is_station = m_is_bridge = m_is_tunnel = false; - m_tiles_skipped = 0; - - /* extra handling for tunnels and bridges in our direction */ - if (IsTileType(m_old_tile, MP_TUNNELBRIDGE)) { - DiagDirection enterdir = GetTunnelBridgeDirection(m_old_tile); - if (enterdir == m_exitdir) { - /* we are entering the tunnel / bridge */ - if (IsTunnel(m_old_tile)) { - m_is_tunnel = true; - m_new_tile = GetOtherTunnelEnd(m_old_tile); - } else { // IsBridge(m_old_tile) - m_is_bridge = true; - m_new_tile = GetOtherBridgeEnd(m_old_tile); - } - m_tiles_skipped = GetTunnelBridgeLength(m_new_tile, m_old_tile); - return; - } - assert(ReverseDiagDir(enterdir) == m_exitdir); - } - - /* normal or station tile, do one step */ - TileIndexDiff diff = TileOffsByDiagDir(m_exitdir); - m_new_tile = TILE_ADD(m_old_tile, diff); - - /* special handling for stations */ - if (IsRailTT() && HasStationTileRail(m_new_tile)) { - m_is_station = true; - } else if (IsRoadTT() && IsRoadStopTile(m_new_tile)) { - m_is_station = true; - } else { - m_is_station = false; - } - } - - /** stores track status (available trackdirs) for the new tile into m_new_td_bits */ - FORCEINLINE bool QueryNewTileTrackStatus() - { - CPerfStart perf(*m_pPerf); - if (IsRailTT() && IsPlainRailTile(m_new_tile)) { - m_new_td_bits = (TrackdirBits)(GetTrackBits(m_new_tile) * 0x101); - } else { - m_new_td_bits = TrackStatusToTrackdirBits(GetTileTrackStatus(m_new_tile, TT(), IsRoadTT() && m_veh != NULL ? RoadVehicle::From(m_veh)->compatible_roadtypes : 0)); - - if (IsTram() && m_new_td_bits == 0) { - /* GetTileTrackStatus() returns 0 for single tram bits. - * As we cannot change it there (easily) without breaking something, change it here */ - switch (GetSingleTramBit(m_new_tile)) { - case DIAGDIR_NE: - case DIAGDIR_SW: - m_new_td_bits = TRACKDIR_BIT_X_NE | TRACKDIR_BIT_X_SW; - break; - - case DIAGDIR_NW: - case DIAGDIR_SE: - m_new_td_bits = TRACKDIR_BIT_Y_NW | TRACKDIR_BIT_Y_SE; - break; - - default: break; - } - } - } - return (m_new_td_bits != TRACKDIR_BIT_NONE); - } - - /** return true if we can leave m_old_tile in m_exitdir */ - FORCEINLINE bool CanExitOldTile() - { - /* road stop can be left at one direction only unless it's a drive-through stop */ - if (IsRoadTT() && IsStandardRoadStopTile(m_old_tile)) { - DiagDirection exitdir = GetRoadStopDir(m_old_tile); - if (exitdir != m_exitdir) { - m_err = EC_NO_WAY; - return false; - } - } - - /* single tram bits can only be left in one direction */ - if (IsTram()) { - DiagDirection single_tram = GetSingleTramBit(m_old_tile); - if (single_tram != INVALID_DIAGDIR && single_tram != m_exitdir) { - m_err = EC_NO_WAY; - return false; - } - } - - /* road depots can be also left in one direction only */ - if (IsRoadTT() && IsDepotTypeTile(m_old_tile, TT())) { - DiagDirection exitdir = GetRoadDepotDirection(m_old_tile); - if (exitdir != m_exitdir) { - m_err = EC_NO_WAY; - return false; - } - } - return true; - } - - /** return true if we can enter m_new_tile from m_exitdir */ - FORCEINLINE bool CanEnterNewTile() - { - if (IsRoadTT() && IsStandardRoadStopTile(m_new_tile)) { - /* road stop can be entered from one direction only unless it's a drive-through stop */ - DiagDirection exitdir = GetRoadStopDir(m_new_tile); - if (ReverseDiagDir(exitdir) != m_exitdir) { - m_err = EC_NO_WAY; - return false; - } - } - - /* single tram bits can only be entered from one direction */ - if (IsTram()) { - DiagDirection single_tram = GetSingleTramBit(m_new_tile); - if (single_tram != INVALID_DIAGDIR && single_tram != ReverseDiagDir(m_exitdir)) { - m_err = EC_NO_WAY; - return false; - } - } - - /* road and rail depots can also be entered from one direction only */ - if (IsRoadTT() && IsDepotTypeTile(m_new_tile, TT())) { - DiagDirection exitdir = GetRoadDepotDirection(m_new_tile); - if (ReverseDiagDir(exitdir) != m_exitdir) { - m_err = EC_NO_WAY; - return false; - } - /* don't try to enter other company's depots */ - if (GetTileOwner(m_new_tile) != m_veh_owner) { - m_err = EC_OWNER; - return false; - } - } - if (IsRailTT() && IsDepotTypeTile(m_new_tile, TT())) { - DiagDirection exitdir = GetRailDepotDirection(m_new_tile); - if (ReverseDiagDir(exitdir) != m_exitdir) { - m_err = EC_NO_WAY; - return false; - } - } - - /* rail transport is possible only on tiles with the same owner as vehicle */ - if (IsRailTT() && GetTileOwner(m_new_tile) != m_veh_owner) { - /* different owner */ - m_err = EC_NO_WAY; - return false; - } - - /* rail transport is possible only on compatible rail types */ - if (IsRailTT()) { - RailType rail_type = GetTileRailType(m_new_tile); - if (!HasBit(m_railtypes, rail_type)) { - /* incompatible rail type */ - m_err = EC_RAIL_TYPE; - return false; - } - } - - /* tunnel holes and bridge ramps can be entered only from proper direction */ - if (IsTileType(m_new_tile, MP_TUNNELBRIDGE)) { - if (IsTunnel(m_new_tile)) { - if (!m_is_tunnel) { - DiagDirection tunnel_enterdir = GetTunnelBridgeDirection(m_new_tile); - if (tunnel_enterdir != m_exitdir) { - m_err = EC_NO_WAY; - return false; - } - } - } else { // IsBridge(m_new_tile) - if (!m_is_bridge) { - DiagDirection ramp_enderdir = GetTunnelBridgeDirection(m_new_tile); - if (ramp_enderdir != m_exitdir) { - m_err = EC_NO_WAY; - return false; - } - } - } - } - - /* special handling for rail stations - get to the end of platform */ - if (IsRailTT() && m_is_station) { - /* entered railway station - * get platform length */ - uint length = BaseStation::GetByTile(m_new_tile)->GetPlatformLength(m_new_tile, TrackdirToExitdir(m_old_td)); - /* how big step we must do to get to the last platform tile; */ - m_tiles_skipped = length - 1; - /* move to the platform end */ - TileIndexDiff diff = TileOffsByDiagDir(m_exitdir); - diff *= m_tiles_skipped; - m_new_tile = TILE_ADD(m_new_tile, diff); - return true; - } - - return true; - } - - /** return true if we must reverse (in depots and single tram bits) */ - FORCEINLINE bool ForcedReverse() - { - /* rail and road depots cause reversing */ - if (!IsWaterTT() && IsDepotTypeTile(m_old_tile, TT())) { - DiagDirection exitdir = IsRailTT() ? GetRailDepotDirection(m_old_tile) : GetRoadDepotDirection(m_old_tile); - if (exitdir != m_exitdir) { - /* reverse */ - m_new_tile = m_old_tile; - m_new_td_bits = TrackdirToTrackdirBits(ReverseTrackdir(m_old_td)); - m_exitdir = exitdir; - m_tiles_skipped = 0; - m_is_tunnel = m_is_bridge = m_is_station = false; - return true; - } - } - - /* single tram bits cause reversing */ - if (IsTram() && GetSingleTramBit(m_old_tile) == ReverseDiagDir(m_exitdir)) { - /* reverse */ - m_new_tile = m_old_tile; - m_new_td_bits = TrackdirToTrackdirBits(ReverseTrackdir(m_old_td)); - m_exitdir = ReverseDiagDir(m_exitdir); - m_tiles_skipped = 0; - m_is_tunnel = m_is_bridge = m_is_station = false; - return true; - } - - return false; - } - - /** return true if we successfully reversed at end of road/track */ - FORCEINLINE bool TryReverse() - { - if (IsRoadTT() && !IsTram()) { - /* if we reached the end of road, we can reverse the RV and continue moving */ - m_exitdir = ReverseDiagDir(m_exitdir); - /* new tile will be the same as old one */ - m_new_tile = m_old_tile; - /* set new trackdir bits to all reachable trackdirs */ - QueryNewTileTrackStatus(); - m_new_td_bits &= DiagdirReachesTrackdirs(m_exitdir); - if (m_new_td_bits != TRACKDIR_BIT_NONE) { - /* we have some trackdirs reachable after reversal */ - return true; - } - } - m_err = EC_NO_WAY; - return false; - } - -public: - /** Helper for pathfinders - get min/max speed on the m_old_tile/m_old_td */ - int GetSpeedLimit(int *pmin_speed = NULL) const - { - int min_speed = 0; - int max_speed = INT_MAX; // no limit - - /* for now we handle only on-bridge speed limit */ - if (!IsWaterTT() && IsBridgeTile(m_old_tile)) { - int spd = GetBridgeSpec(GetBridgeType(m_old_tile))->speed; - if (IsRoadTT()) spd *= 2; - if (max_speed > spd) max_speed = spd; - } - - /* if min speed was requested, return it */ - if (pmin_speed) *pmin_speed = min_speed; - return max_speed; - } -}; - -typedef CFollowTrackT<TRANSPORT_WATER, Ship, true > CFollowTrackWater; -typedef CFollowTrackT<TRANSPORT_ROAD, RoadVehicle, true > CFollowTrackRoad; -typedef CFollowTrackT<TRANSPORT_RAIL, Train, true > CFollowTrackRail; - -typedef CFollowTrackT<TRANSPORT_WATER, Ship, false> CFollowTrackWaterNo90; -typedef CFollowTrackT<TRANSPORT_ROAD, RoadVehicle, false> CFollowTrackRoadNo90; -typedef CFollowTrackT<TRANSPORT_RAIL, Train, false> CFollowTrackRailNo90; - -typedef CFollowTrackT<TRANSPORT_RAIL, Train, true, true > CFollowTrackFreeRail; -typedef CFollowTrackT<TRANSPORT_RAIL, Train, false, true > CFollowTrackFreeRailNo90; - -#endif /* FOLLOW_TRACK_HPP */ |