diff options
Diffstat (limited to 'src/rail_cmd.cpp')
| -rw-r--r-- | src/rail_cmd.cpp | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/src/rail_cmd.cpp b/src/rail_cmd.cpp index 51ddec70f..4ac7f76ac 100644 --- a/src/rail_cmd.cpp +++ b/src/rail_cmd.cpp @@ -2181,12 +2181,13 @@ static TrackStatus GetTileTrackStatus_Track(TileIndex tile, TransportType mode, b &= a; - /* When signals are not present (in neither - * direction), we pretend them to be green. (So if - * signals are only one way, the other way will - * implicitely become `red' */ - if ((a & 0xC) == 0) b |= 0xC; - if ((a & 0x3) == 0) b |= 0x3; + /* 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 explicitely to + * `green'. Otherwise, they implicitely 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); |