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Fix train reverse inside signalled tunnel/bridge entrance clearing reservation of incoming train

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This commit is contained in:
Jonathan G Rennison 2019-08-18 14:40:24 +01:00
parent 0aa366a24b
commit 70ef0f562b
2 changed files with 15 additions and 0 deletions
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3
src/train_cmd.cpp
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@ -2725,6 +2725,9 @@ void FreeTrainTrackReservation(const Train *v, TileIndex origin, Trackdir orig_t
/* Don't free reservation if it's not ours. */
if (TracksOverlap(GetReservedTrackbits(tile) | TrackToTrackBits(TrackdirToTrack(td)))) return;
/* Do not attempt to unreserve out of a signalled tunnel/bridge entrance, as this would unreserve the reservations of another train coming in */
if (IsTunnelBridgeWithSignalSimulation(tile) && TrackdirExitsTunnelBridge(tile, td) && IsTunnelBridgeSignalSimulationEntranceOnly(tile)) return;
CFollowTrackRail ft(v, GetRailTypeInfo(v->railtype)->compatible_railtypes);
while (ft.Follow(tile, td)) {
tile = ft.m_new_tile;

12
src/tunnelbridge_map.h
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@ -372,6 +372,18 @@ static inline bool IsTunnelBridgeSignalSimulationEntrance(TileIndex t)
return HasBit(_m[t].m5, 5);
}
/**
* Is this a tunnel/bridge entrance tile with signal only?
* @param t the tile that might be a tunnel/bridge.
* @pre IsTileType(t, MP_TUNNELBRIDGE)
* @return true if and only if this tile is a tunnel/bridge entrance only.
*/
static inline bool IsTunnelBridgeSignalSimulationEntranceOnly(TileIndex t)
{
assert_tile(IsTileType(t, MP_TUNNELBRIDGE), t);
return HasBit(_m[t].m5, 5) && !HasBit(_m[t].m5, 6);
}
/**
* Is this a tunnel/bridge exit?
* @param t the tile that might be a tunnel/bridge.