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-rw-r--r--src/yapf/follow_track.hpp24
-rw-r--r--src/yapf/yapf.h11
-rw-r--r--src/yapf/yapf_costrail.hpp14
-rw-r--r--src/yapf/yapf_destrail.hpp35
-rw-r--r--src/yapf/yapf_node_rail.hpp6
-rw-r--r--src/yapf/yapf_rail.cpp98
6 files changed, 184 insertions, 4 deletions
diff --git a/src/yapf/follow_track.hpp b/src/yapf/follow_track.hpp
index 035bc2460..a2f727dab 100644
--- a/src/yapf/follow_track.hpp
+++ b/src/yapf/follow_track.hpp
@@ -10,8 +10,8 @@
/** Track follower helper template class (can serve pathfinders and vehicle
* controllers). See 6 different typedefs below for 3 different transport
- * types w/ of w/o 90-deg turns allowed */
-template <TransportType Ttr_type_, bool T90deg_turns_allowed_ = true>
+ * types w/ or w/o 90-deg turns allowed */
+template <TransportType Ttr_type_, bool T90deg_turns_allowed_ = true, bool Tmask_reserved_tracks = false>
struct CFollowTrackT
{
enum ErrorCode {
@@ -20,6 +20,7 @@ struct CFollowTrackT
EC_RAIL_TYPE,
EC_90DEG,
EC_NO_WAY,
+ EC_RESERVED,
};
const Vehicle *m_veh; ///< moving vehicle
@@ -62,6 +63,7 @@ struct CFollowTrackT
FORCEINLINE bool IsTram() {return IsRoadTT() && HasBit(m_veh->u.road.compatible_roadtypes, ROADTYPE_TRAM);}
FORCEINLINE static bool IsRoadTT() {return TT() == TRANSPORT_ROAD;}
FORCEINLINE static bool Allow90degTurns() {return T90deg_turns_allowed_;}
+ FORCEINLINE static bool MaskReservedTracks() {return Tmask_reserved_tracks;}
/** Tests if a tile is a road tile with a single tramtrack (tram can reverse) */
FORCEINLINE DiagDirection GetSingleTramBit(TileIndex tile)
@@ -106,6 +108,21 @@ struct CFollowTrackT
return false;
}
}
+ if (MaskReservedTracks()) {
+ 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;
}
@@ -382,4 +399,7 @@ typedef CFollowTrackT<TRANSPORT_WATER, false> CFollowTrackWaterNo90;
typedef CFollowTrackT<TRANSPORT_ROAD , false> CFollowTrackRoadNo90;
typedef CFollowTrackT<TRANSPORT_RAIL , false> CFollowTrackRailNo90;
+typedef CFollowTrackT<TRANSPORT_RAIL , true , true> CFollowTrackFreeRail;
+typedef CFollowTrackT<TRANSPORT_RAIL , false, true> CFollowTrackFreeRailNo90;
+
#endif /* FOLLOW_TRACK_HPP */
diff --git a/src/yapf/yapf.h b/src/yapf/yapf.h
index fb39854b2..45ba94eb3 100644
--- a/src/yapf/yapf.h
+++ b/src/yapf/yapf.h
@@ -66,6 +66,17 @@ bool YapfFindNearestRailDepotTwoWay(const Vehicle *v, int max_distance, int reve
/** Returns true if it is better to reverse the train before leaving station */
bool YapfCheckReverseTrain(const Vehicle* v);
+/**
+ * Try to extend the reserved path of a train to the nearest safe tile.
+ *
+ * @param v The train that needs to find a safe tile.
+ * @param tile Last tile of the current reserved path.
+ * @param td Last trackdir of the current reserved path.
+ * @param override_railtype Should all physically compabtible railtypes be searched, even if the vehicle can't on them on it own?
+ * @return True if the path could be extended to a safe tile.
+ */
+bool YapfRailFindNearestSafeTile(const Vehicle *v, TileIndex tile, Trackdir td, bool override_railtype);
+
/** Use this function to notify YAPF that track layout (or signal configuration) has change */
void YapfNotifyTrackLayoutChange(TileIndex tile, Track track);
diff --git a/src/yapf/yapf_costrail.hpp b/src/yapf/yapf_costrail.hpp
index 60eaae390..c19353f1f 100644
--- a/src/yapf/yapf_costrail.hpp
+++ b/src/yapf/yapf_costrail.hpp
@@ -387,6 +387,11 @@ no_entry_cost: // jump here at the beginning if the node has no parent (it is th
} else if (cur.tile_type == MP_RAILWAY && IsRailWaypoint(cur.tile)) {
/* Waypoint is also a good reason to finish. */
end_segment_reason |= ESRB_WAYPOINT;
+ } else if (TrackFollower::MaskReservedTracks() && cur.tile_type == MP_RAILWAY) {
+ /* Searching for a safe tile? */
+ if (HasSignalOnTrackdir(cur.tile, cur.td) && !IsPbsSignal(GetSignalType(cur.tile, TrackdirToTrack(cur.td)))) {
+ end_segment_reason |= ESRB_SAFE_TILE;
+ }
}
/* Apply min/max speed penalties only when inside the look-ahead radius. Otherwise
@@ -419,6 +424,10 @@ no_entry_cost: // jump here at the beginning if the node has no parent (it is th
} else {
end_segment_reason |= ESRB_DEAD_END;
}
+
+ if (TrackFollower::MaskReservedTracks() && tf_local.m_err != TrackFollower::EC_90DEG) {
+ end_segment_reason |= ESRB_SAFE_TILE;
+ }
break;
}
@@ -432,6 +441,11 @@ no_entry_cost: // jump here at the beginning if the node has no parent (it is th
/* Gather the next tile/trackdir/tile_type/rail_type. */
TILE next(tf_local.m_new_tile, (Trackdir)FindFirstBit2x64(tf_local.m_new_td_bits));
+ if (TrackFollower::MaskReservedTracks() && HasPbsSignalOnTrackdir(next.tile, next.td)) {
+ /* Possible safe tile. */
+ end_segment_reason |= ESRB_SAFE_TILE;
+ }
+
/* Check the next tile for the rail type. */
if (next.rail_type != cur.rail_type) {
/* Segment must consist from the same rail_type tiles. */
diff --git a/src/yapf/yapf_destrail.hpp b/src/yapf/yapf_destrail.hpp
index 7ea73889e..9790758e4 100644
--- a/src/yapf/yapf_destrail.hpp
+++ b/src/yapf/yapf_destrail.hpp
@@ -63,6 +63,41 @@ public:
};
template <class Types>
+class CYapfDestinationAnySafeTileRailT
+ : public CYapfDestinationRailBase
+{
+public:
+ typedef typename Types::Tpf Tpf; ///< the pathfinder class (derived from THIS class)
+ typedef typename Types::NodeList::Titem Node; ///< this will be our node type
+ typedef typename Node::Key Key; ///< key to hash tables
+
+ /// to access inherited path finder
+ Tpf& Yapf() {return *static_cast<Tpf*>(this);}
+
+ /// Called by YAPF to detect if node ends in the desired destination
+ FORCEINLINE bool PfDetectDestination(Node& n)
+ {
+ return PfDetectDestination(n.GetLastTile(), n.GetLastTrackdir());
+ }
+
+ /// Called by YAPF to detect if node ends in the desired destination
+ FORCEINLINE bool PfDetectDestination(TileIndex tile, Trackdir td)
+ {
+ return
+ IsSafeWaitingPosition(Yapf().GetVehicle(), tile, td, true, Types::TrackFollower::Allow90degTurns()) &&
+ IsWaitingPositionFree(Yapf().GetVehicle(), tile, td, Types::TrackFollower::Allow90degTurns());
+ }
+
+ /** Called by YAPF to calculate cost estimate. Calculates distance to the destination
+ * adds it to the actual cost from origin and stores the sum to the Node::m_estimate. */
+ FORCEINLINE bool PfCalcEstimate(Node& n)
+ {
+ n.m_estimate = n.m_cost;
+ return true;
+ }
+};
+
+template <class Types>
class CYapfDestinationTileOrStationRailT
: public CYapfDestinationRailBase
{
diff --git a/src/yapf/yapf_node_rail.hpp b/src/yapf/yapf_node_rail.hpp
index 6b42d30cf..192bce2ed 100644
--- a/src/yapf/yapf_node_rail.hpp
+++ b/src/yapf/yapf_node_rail.hpp
@@ -39,6 +39,7 @@ enum EndSegmentReason {
ESR_DEPOT, ///< stop in the depot (could be a target next time)
ESR_WAYPOINT, ///< waypoint encountered (could be a target next time)
ESR_STATION, ///< station encountered (could be a target next time)
+ ESR_SAFE_TILE, ///< safe waiting position found (could be a target)
/* The following reasons are used only internally by PfCalcCost().
* They should not be found in the cached segment. */
@@ -62,6 +63,7 @@ enum EndSegmentReasonBits {
ESRB_DEPOT = 1 << ESR_DEPOT,
ESRB_WAYPOINT = 1 << ESR_WAYPOINT,
ESRB_STATION = 1 << ESR_STATION,
+ ESRB_SAFE_TILE = 1 << ESR_SAFE_TILE,
ESRB_PATH_TOO_LONG = 1 << ESR_PATH_TOO_LONG,
ESRB_FIRST_TWO_WAY_RED = 1 << ESR_FIRST_TWO_WAY_RED,
@@ -71,10 +73,10 @@ enum EndSegmentReasonBits {
/* Additional (composite) values. */
/* What reasons mean that the target can be found and needs to be detected. */
- ESRB_POSSIBLE_TARGET = ESRB_DEPOT | ESRB_WAYPOINT | ESRB_STATION,
+ ESRB_POSSIBLE_TARGET = ESRB_DEPOT | ESRB_WAYPOINT | ESRB_STATION | ESRB_SAFE_TILE,
/* What reasons can be stored back into cached segment. */
- ESRB_CACHED_MASK = ESRB_DEAD_END | ESRB_RAIL_TYPE | ESRB_INFINITE_LOOP | ESRB_SEGMENT_TOO_LONG | ESRB_CHOICE_FOLLOWS | ESRB_DEPOT | ESRB_WAYPOINT | ESRB_STATION,
+ ESRB_CACHED_MASK = ESRB_DEAD_END | ESRB_RAIL_TYPE | ESRB_INFINITE_LOOP | ESRB_SEGMENT_TOO_LONG | ESRB_CHOICE_FOLLOWS | ESRB_DEPOT | ESRB_WAYPOINT | ESRB_STATION | ESRB_SAFE_TILE,
/* Reasons to abort pathfinding in this direction. */
ESRB_ABORT_PF_MASK = ESRB_DEAD_END | ESRB_PATH_TOO_LONG | ESRB_INFINITE_LOOP | ESRB_FIRST_TWO_WAY_RED,
diff --git a/src/yapf/yapf_rail.cpp b/src/yapf/yapf_rail.cpp
index f49d543b9..e4a29d78e 100644
--- a/src/yapf/yapf_rail.cpp
+++ b/src/yapf/yapf_rail.cpp
@@ -204,6 +204,88 @@ public:
};
template <class Types>
+class CYapfFollowAnySafeTileRailT : protected CYapfReserveTrack<Types>
+{
+public:
+ typedef typename Types::Tpf Tpf; ///< the pathfinder class (derived from THIS class)
+ typedef typename Types::TrackFollower TrackFollower;
+ typedef typename Types::NodeList::Titem Node; ///< this will be our node type
+ typedef typename Node::Key Key; ///< key to hash tables
+
+protected:
+ /// to access inherited path finder
+ FORCEINLINE Tpf& Yapf() {return *static_cast<Tpf*>(this);}
+
+public:
+ /** Called by YAPF to move from the given node to the next tile. For each
+ * reachable trackdir on the new tile creates new node, initializes it
+ * and adds it to the open list by calling Yapf().AddNewNode(n) */
+ inline void PfFollowNode(Node& old_node)
+ {
+ TrackFollower F(Yapf().GetVehicle(), Yapf().GetCompatibleRailTypes());
+ if (F.Follow(old_node.GetLastTile(), old_node.GetLastTrackdir()))
+ Yapf().AddMultipleNodes(&old_node, F);
+ }
+
+ /** Return debug report character to identify the transportation type */
+ FORCEINLINE char TransportTypeChar() const {return 't';}
+
+ static bool stFindNearestSafeTile(const Vehicle *v, TileIndex t1, Trackdir td, bool override_railtype)
+ {
+ /* Create pathfinder instance */
+ Tpf pf1;
+#if !DEBUG_YAPF_CACHE
+ bool result1 = pf1.FindNearestSafeTile(v, t1, td, override_railtype, false);
+
+#else
+ bool result2 = pf1.FindNearestSafeTile(v, t1, td, override_railtype, true);
+ Tpf pf2;
+ pf2.DisableCache(true);
+ bool result1 = pf2.FindNearestSafeTile(v, t1, td, override_railtype, false);
+ if (result1 != result2) {
+ DEBUG(yapf, 0, "CACHE ERROR: FindSafeTile() = [%s, %s]", result2 ? "T" : "F", result1 ? "T" : "F");
+ DumpTarget dmp1, dmp2;
+ pf1.DumpBase(dmp1);
+ pf2.DumpBase(dmp2);
+ FILE *f1 = fopen("C:\\yapf1.txt", "wt");
+ FILE *f2 = fopen("C:\\yapf2.txt", "wt");
+ fwrite(dmp1.m_out.Data(), 1, dmp1.m_out.Size(), f1);
+ fwrite(dmp2.m_out.Data(), 1, dmp2.m_out.Size(), f2);
+ fclose(f1);
+ fclose(f2);
+ }
+#endif
+
+ return result1;
+ }
+
+ bool FindNearestSafeTile(const Vehicle *v, TileIndex t1, Trackdir td, bool override_railtype, bool dont_reserve)
+ {
+ /* Set origin and destination. */
+ Yapf().SetOrigin(t1, td);
+ Yapf().SetDestination(v, override_railtype);
+
+ bool bFound = Yapf().FindPath(v);
+ if (!bFound) return false;
+
+ /* Found a destination, set as reservation target. */
+ Node *pNode = Yapf().GetBestNode();
+ this->SetReservationTarget(pNode, pNode->GetLastTile(), pNode->GetLastTrackdir());
+
+ /* Walk through the path back to the origin. */
+ Node* pPrev = NULL;
+ while (pNode->m_parent != NULL) {
+ pPrev = pNode;
+ pNode = pNode->m_parent;
+
+ this->FindSafePositionOnNode(pPrev);
+ }
+
+ return dont_reserve || this->TryReservePath(NULL);
+ }
+};
+
+template <class Types>
class CYapfFollowRailT : protected CYapfReserveTrack<Types>
{
public:
@@ -366,6 +448,9 @@ struct CYapfRail2 : CYapfT<CYapfRail_TypesT<CYapfRail2 , CFollowT
struct CYapfAnyDepotRail1 : CYapfT<CYapfRail_TypesT<CYapfAnyDepotRail1, CFollowTrackRail , CRailNodeListTrackDir, CYapfDestinationAnyDepotRailT , CYapfFollowAnyDepotRailT> > {};
struct CYapfAnyDepotRail2 : CYapfT<CYapfRail_TypesT<CYapfAnyDepotRail2, CFollowTrackRailNo90, CRailNodeListTrackDir, CYapfDestinationAnyDepotRailT , CYapfFollowAnyDepotRailT> > {};
+struct CYapfAnySafeTileRail1 : CYapfT<CYapfRail_TypesT<CYapfAnySafeTileRail1, CFollowTrackFreeRail , CRailNodeListTrackDir, CYapfDestinationAnySafeTileRailT , CYapfFollowAnySafeTileRailT> > {};
+struct CYapfAnySafeTileRail2 : CYapfT<CYapfRail_TypesT<CYapfAnySafeTileRail2, CFollowTrackFreeRailNo90, CRailNodeListTrackDir, CYapfDestinationAnySafeTileRailT , CYapfFollowAnySafeTileRailT> > {};
+
Trackdir YapfChooseRailTrack(const Vehicle *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool *path_not_found, bool reserve_track, PBSTileInfo *target)
{
@@ -466,6 +551,19 @@ bool YapfFindNearestRailDepotTwoWay(const Vehicle *v, int max_distance, int reve
return ret;
}
+bool YapfRailFindNearestSafeTile(const Vehicle *v, TileIndex tile, Trackdir td, bool override_railtype)
+{
+ typedef bool (*PfnFindNearestSafeTile)(const Vehicle*, TileIndex, Trackdir, bool);
+ PfnFindNearestSafeTile pfnFindNearestSafeTile = CYapfAnySafeTileRail1::stFindNearestSafeTile;
+
+ /* check if non-default YAPF type needed */
+ if (_settings_game.pf.forbid_90_deg) {
+ pfnFindNearestSafeTile = &CYapfAnySafeTileRail2::stFindNearestSafeTile;
+ }
+
+ return pfnFindNearestSafeTile(v, tile, td, override_railtype);
+}
+
/** if any track changes, this counter is incremented - that will invalidate segment cost cache */
int CSegmentCostCacheBase::s_rail_change_counter = 0;
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-23 19:17:47 +0000