diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/yapf/follow_track.hpp | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/src/yapf/follow_track.hpp b/src/yapf/follow_track.hpp index 7d7fd1954..16d405eea 100644 --- a/src/yapf/follow_track.hpp +++ b/src/yapf/follow_track.hpp @@ -82,7 +82,9 @@ struct CFollowTrackT /** Tests if a tile is a road tile with a single tramtrack (tram can reverse) */ FORCEINLINE DiagDirection GetSingleTramBit(TileIndex tile) { - if (IsTram() && IsNormalRoadTile(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; @@ -103,7 +105,7 @@ struct CFollowTrackT m_old_td = old_td; m_err = EC_NONE; assert(((TrackStatusToTrackdirBits(GetTileTrackStatus(m_old_tile, TT(), m_veh ? m_veh->u.road.compatible_roadtypes : 0)) & TrackdirToTrackdirBits(m_old_td)) != 0) || - (GetSingleTramBit(m_old_tile) != INVALID_DIAGDIR)); // Disable the assertion for single tram bits + (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; @@ -205,7 +207,7 @@ protected: } else { m_new_td_bits = TrackStatusToTrackdirBits(GetTileTrackStatus(m_new_tile, TT(), m_veh != NULL ? m_veh->u.road.compatible_roadtypes : 0)); - if (m_new_td_bits == 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)) { @@ -239,10 +241,12 @@ protected: } /* single tram bits can only be left in one direction */ - DiagDirection single_tram = GetSingleTramBit(m_old_tile); - if (single_tram != INVALID_DIAGDIR && single_tram != m_exitdir) { - m_err = EC_NO_WAY; - return false; + 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 @@ -269,10 +273,12 @@ protected: } /* single tram bits can only be entered from one direction */ - DiagDirection single_tram = GetSingleTramBit(m_new_tile); - if (single_tram != INVALID_DIAGDIR && single_tram != ReverseDiagDir(m_exitdir)) { - m_err = EC_NO_WAY; - return false; + 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 @@ -369,7 +375,7 @@ protected: } // single tram bits cause reversing - if (GetSingleTramBit(m_old_tile) == ReverseDiagDir(m_exitdir)) { + 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)); |