cpp/openttd-patchpack/source Changeset - r22939:fbe30010235d

Changeset - r22939:fbe30010235d

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J0anJosep - 6 years ago 2018-04-29 10:23:01
juanjo.ng.83@gmail.com

Codechange: Increase readability of track functions and pathfinders.

8 files changed with 28 insertions and 26 deletions:

src/pathfinder/follow_track.hpp

src/pathfinder/npf/npf.cpp

src/pathfinder/opf/opf_ship.cpp

src/pathfinder/yapf/yapf_common.hpp

src/pathfinder/yapf/yapf_costrail.hpp

src/pathfinder/yapf/yapf_destrail.hpp

src/pathfinder/yapf/yapf_road.cpp

src/track_func.h

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src/pathfinder/follow_track.hpp

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@@ @@ -239,7 +239,7 @@ protected: @@
 		} else {
 			m_new_td_bits = TrackStatusToTrackdirBits(GetTileTrackStatus(m_new_tile, TT(), IsRoadTT() ? RoadVehicle::From(m_veh)->compatible_roadtypes : 0));
-			if (IsTram() && m_new_td_bits == 0) {
+			if (IsTram() && m_new_td_bits == TRACKDIR_BIT_NONE) {
 				/* 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)) {

src/pathfinder/npf/npf.cpp

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@@ @@ -807,7 +807,7 @@ static TrackdirBits GetDriveableTrackdir @@
+{
 	TrackdirBits trackdirbits = TrackStatusToTrackdirBits(GetTileTrackStatus(dst_tile, type, subtype));
-	if (trackdirbits == 0 && type == TRANSPORT_ROAD && HasBit(subtype, ROADTYPE_TRAM)) {
+	if (trackdirbits == TRACKDIR_BIT_NONE && type == TRANSPORT_ROAD && HasBit(subtype, ROADTYPE_TRAM)) {
 		/* GetTileTrackStatus() returns 0 for single tram bits.
 		 * As we cannot change it there (easily) without breaking something, change it here */
 		switch (GetSingleTramBit(dst_tile)) {
@@ @@ -900,7 +900,7 @@ static void NPFFollowTrack(AyStar *aysta @@
 		trackdirbits = GetDriveableTrackdirBits(dst_tile, src_trackdir, type, subtype);
-		if (trackdirbits == 0) {
+		if (trackdirbits == TRACKDIR_BIT_NONE) {
 			/* We cannot enter the next tile. Road vehicles can reverse, others reach dead end */
 			if (type != TRANSPORT_ROAD || HasBit(subtype, ROADTYPE_TRAM)) return;
@@ @@ -924,7 +924,7 @@ static void NPFFollowTrack(AyStar *aysta @@
 	/* Enumerate possible track */
 	uint i = 0;
-	while (trackdirbits != 0) {
+	while (trackdirbits != TRACKDIR_BIT_NONE) {
 		Trackdir dst_trackdir = RemoveFirstTrackdir(&trackdirbits);
 		DEBUG(npf, 5, "Expanded into trackdir: %d, remaining trackdirs: 0x%X", dst_trackdir, trackdirbits);

src/pathfinder/opf/opf_ship.cpp

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@@ @@ -183,9 +183,14 @@ bad:; @@
+}
 /**
  * returns the track to choose on the next tile, or -1 when it's better to
  * reverse. The tile given is the tile we are about to enter, enterdir is the
  * direction in which we are entering the tile
  * Finds the best track to choose on the next tile and
  * returns INVALID_TRACK when it is better to reverse.
  * @param v The ship.
  * @param tile The tile we are about to enter.
  * @param enterdir The direction entering the tile.
  * @param tracks The tracks available on new tile.
  * @param[out] path_found Whether a path has been found.
  * @return Best track on next tile or INVALID_TRACK when better to reverse.
  */
 Track OPFShipChooseTrack(const Ship *v, TileIndex tile, DiagDirection enterdir, TrackBits tracks, bool &path_found)
+{
@@ @@ -195,13 +200,15 @@ Track OPFShipChooseTrack(const Ship *v, @@
 	Track track;
 	/* Let's find out how far it would be if we would reverse first */
 	Trackdir trackdir = v->GetVehicleTrackdir();
 	TrackBits b = TrackStatusToTrackBits(GetTileTrackStatus(tile2, TRANSPORT_WATER, 0)) & DiagdirReachesTracks(ReverseDiagDir(enterdir)) & TrackdirBitsToTrackBits(TrackdirToTrackdirBits(trackdir));
 	uint rev_dist = UINT_MAX; // distance if we reverse
 	Track cur_track = TrackdirToTrack(v->GetVehicleTrackdir()); // track on the current tile
 	DiagDirection rev_enterdir = ReverseDiagDir(enterdir);
 	TrackBits rev_tracks = TrackStatusToTrackBits(GetTileTrackStatus(tile2, TRANSPORT_WATER, 0)) &
 			DiagdirReachesTracks(rev_enterdir);
 	uint distr = UINT_MAX; // distance if we reversed
 	if (b != 0) {
 		distr = FindShipTrack(v, tile2, ReverseDiagDir(enterdir), b, tile, &track);
 		if (distr != UINT_MAX) distr++; // penalty for reversing
 	if ((rev_tracks & TrackToTrackBits(cur_track) != TRACK_BIT_NONE) {
 		rev_dist = FindShipTrack(v, tile2, rev_enterdir, TrackToTrackBits(cur_track), tile, &track);
 		if (rev_dist != UINT_MAX) rev_dist++; // penalty for reversing
+	}
 	/* And if we would not reverse? */
@@ @@ -209,6 +216,6 @@ Track OPFShipChooseTrack(const Ship *v, @@
 	/* Due to the way this pathfinder works we cannot determine whether we're lost or not. */
 	path_found = true;
-	if (dist <= distr) return track;
+	if (dist <= rev_dist) return track;
 	return INVALID_TRACK; // We could better reverse
+}

src/pathfinder/yapf/yapf_common.hpp

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@@ @@ -142,8 +142,7 @@ public: @@
 	/** Called by YAPF to detect if node ends in the desired destination */
 	inline bool PfDetectDestination(Node &n)
+	{
 		bool bDest = (n.m_key.m_tile == m_destTile) && ((m_destTrackdirs & TrackdirToTrackdirBits(n.GetTrackdir())) != TRACKDIR_BIT_NONE);
 		return bDest;
 		return (n.m_key.m_tile == m_destTile) && ((m_destTrackdirs & TrackdirToTrackdirBits(n.GetTrackdir())) != TRACKDIR_BIT_NONE);
+	}
 	/**

src/pathfinder/yapf/yapf_costrail.hpp

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@@ @@ -104,7 +104,7 @@ public: @@
 		assert(IsValidTrackdir(td2));
 		int cost = 0;
 		if (TrackFollower::Allow90degTurns()
-				&& ((TrackdirToTrackdirBits(td2) & (TrackdirBits)TrackdirCrossesTrackdirs(td1)) != 0)) {
+				&& ((TrackdirToTrackdirBits(td2) & TrackdirCrossesTrackdirs(td1)) != TRACKDIR_BIT_NONE)) {
 			/* 90-deg curve penalty */
 			cost += Yapf().PfGetSettings().rail_curve90_penalty;
 		} else if (td2 != NextTrackdir(td1)) {

src/pathfinder/yapf/yapf_destrail.hpp

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@@ @@ -166,16 +166,13 @@ public: @@
 	/** Called by YAPF to detect if node ends in the desired destination */
 	inline bool PfDetectDestination(TileIndex tile, Trackdir td)
+	{
 		bool bDest;
 		if (m_dest_station_id != INVALID_STATION) {
-			bDest = HasStationTileRail(tile)
+			return HasStationTileRail(tile)
 				&& (GetStationIndex(tile) == m_dest_station_id)
 				&& (GetRailStationTrack(tile) == TrackdirToTrack(td));
 		} else {
 			bDest = (tile == m_destTile)
 				&& ((m_destTrackdirs & TrackdirToTrackdirBits(td)) != TRACKDIR_BIT_NONE);
+		}
 		return bDest;
 		return (tile == m_destTile) && ((m_destTrackdirs & TrackdirToTrackdirBits(td)) != TRACKDIR_BIT_NONE);
+	}
 	/**

src/pathfinder/yapf/yapf_road.cpp

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@@ @@ -185,8 +185,7 @@ public: @@
 	/** Called by YAPF to detect if node ends in the desired destination */
 	inline bool PfDetectDestination(Node &n)
+	{
 		bool bDest = IsRoadDepotTile(n.m_segment_last_tile);
 		return bDest;
 		return IsRoadDepotTile(n.m_segment_last_tile);
+	}
 	inline bool PfDetectDestinationTile(TileIndex tile, Trackdir trackdir)

src/track_func.h

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@@ @@ -61,7 +61,7 @@ static inline bool IsValidTrackdirForRoa @@
  */
 static inline bool IsValidTrackdir(Trackdir trackdir)
+{
-	return (1 << trackdir & TRACKDIR_BIT_MASK) != 0;
+	return (1 << trackdir & TRACKDIR_BIT_MASK) != TRACKDIR_BIT_NONE;
+}
 /**

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