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authormichi_cc <michi_cc@openttd.org>2008-09-09 19:02:47 +0000
committermichi_cc <michi_cc@openttd.org>2008-09-09 19:02:47 +0000
commitfa3f2ae035a2ad1bcb83b6bbc1e05b21911b5844 (patch)
tree86a1f340910cf221edb5fec9ee8316084e51a823 /src
parenta7a7e2d3cc1c2220765510140810c442a27a4a4b (diff)
downloadopenttd-fa3f2ae035a2ad1bcb83b6bbc1e05b21911b5844.tar.xz
(svn r14285) -Fix [FS#2263]: A train inside a wormhole could free the reservation of another train inside the wormhole.
Diffstat (limited to 'src')
-rw-r--r--src/train_cmd.cpp21
-rw-r--r--src/vehicle.cpp8
-rw-r--r--src/vehicle_func.h2
3 files changed, 18 insertions, 13 deletions
diff --git a/src/train_cmd.cpp b/src/train_cmd.cpp
index 3c01f435a..f03e1a06b 100644
--- a/src/train_cmd.cpp
+++ b/src/train_cmd.cpp
@@ -2424,7 +2424,7 @@ static bool CheckTrainStayInDepot(Vehicle *v)
}
/** Clear the reservation of a tile that was just left by a wagon on track_dir. */
-static void ClearPathReservation(TileIndex tile, Trackdir track_dir)
+static void ClearPathReservation(const Vehicle *v, TileIndex tile, Trackdir track_dir)
{
DiagDirection dir = TrackdirToExitdir(track_dir);
@@ -2433,12 +2433,15 @@ static void ClearPathReservation(TileIndex tile, Trackdir track_dir)
if (GetTunnelBridgeDirection(tile) == ReverseDiagDir(dir)) {
TileIndex end = GetOtherTunnelBridgeEnd(tile);
- SetTunnelBridgeReservation(tile, false);
- SetTunnelBridgeReservation(end, false);
+ if (!HasVehicleOnTunnelBridge(tile, end, v)) {
+ /* Free the reservation only if no other train is on the tiles. */
+ SetTunnelBridgeReservation(tile, false);
+ SetTunnelBridgeReservation(end, false);
- if (_settings_client.gui.show_track_reservation) {
- MarkTileDirtyByTile(tile);
- MarkTileDirtyByTile(end);
+ if (_settings_client.gui.show_track_reservation) {
+ MarkTileDirtyByTile(tile);
+ MarkTileDirtyByTile(end);
+ }
}
}
} else if (IsRailwayStationTile(tile)) {
@@ -2497,7 +2500,7 @@ void FreeTrainTrackReservation(const Vehicle *v, TileIndex origin, Trackdir orig
}
/* Don't free first station/bridge/tunnel if we are on it. */
- if (free_tile || (!(ft.m_is_station && GetStationIndex(ft.m_new_tile) == station_id) && !ft.m_is_tunnel && !ft.m_is_bridge)) ClearPathReservation(tile, td);
+ if (free_tile || (!(ft.m_is_station && GetStationIndex(ft.m_new_tile) == station_id) && !ft.m_is_tunnel && !ft.m_is_bridge)) ClearPathReservation(v, tile, td);
free_tile = true;
}
@@ -3402,7 +3405,7 @@ static void SetVehicleCrashed(Vehicle *v)
* and any railway station paltform reservation. */
FreeTrainTrackReservation(v);
for (const Vehicle *u = v; u != NULL; u = u->Next()) {
- ClearPathReservation(u->tile, GetVehicleTrackdir(u));
+ ClearPathReservation(u, u->tile, GetVehicleTrackdir(u));
if (IsTileType(u->tile, MP_TUNNELBRIDGE)) {
/* ClearPathReservation will not free the wormhole exit
* if the train has just entered the wormhole. */
@@ -3703,7 +3706,7 @@ static void TrainController(Vehicle *v, Vehicle *nomove, bool update_image)
}
/* Clear any track reservation when the last vehicle leaves the tile */
- if (v->Next() == NULL) ClearPathReservation(v->tile, GetVehicleTrackdir(v));
+ if (v->Next() == NULL) ClearPathReservation(v, v->tile, GetVehicleTrackdir(v));
v->tile = gp.new_tile;
diff --git a/src/vehicle.cpp b/src/vehicle.cpp
index a3886c705..ce757c470 100644
--- a/src/vehicle.cpp
+++ b/src/vehicle.cpp
@@ -178,6 +178,7 @@ bool EnsureNoVehicleOnGround(TileIndex tile)
static Vehicle *GetVehicleTunnelBridgeProc(Vehicle *v, void *data)
{
if (v->type != VEH_TRAIN && v->type != VEH_ROAD && v->type != VEH_SHIP) return NULL;
+ if (v == (const Vehicle *)data) return NULL;
_error_message = VehicleInTheWayErrMsg(v);
return v;
@@ -187,12 +188,13 @@ static Vehicle *GetVehicleTunnelBridgeProc(Vehicle *v, void *data)
* Finds vehicle in tunnel / bridge
* @param tile first end
* @param endtile second end
+ * @param ignore Ignore this vehicle when searching
* @return true if the bridge has a vehicle
*/
-bool HasVehicleOnTunnelBridge(TileIndex tile, TileIndex endtile)
+bool HasVehicleOnTunnelBridge(TileIndex tile, TileIndex endtile, const Vehicle *ignore)
{
- return HasVehicleOnPos(tile, NULL, &GetVehicleTunnelBridgeProc) ||
- HasVehicleOnPos(endtile, NULL, &GetVehicleTunnelBridgeProc);
+ return HasVehicleOnPos(tile, (void *)ignore, &GetVehicleTunnelBridgeProc) ||
+ HasVehicleOnPos(endtile, (void *)ignore, &GetVehicleTunnelBridgeProc);
}
diff --git a/src/vehicle_func.h b/src/vehicle_func.h
index 754004d59..ec679776d 100644
--- a/src/vehicle_func.h
+++ b/src/vehicle_func.h
@@ -51,7 +51,7 @@ SpriteID GetRotorImage(const Vehicle *v);
uint32 VehicleEnterTile(Vehicle *v, TileIndex tile, int x, int y);
StringID VehicleInTheWayErrMsg(const Vehicle* v);
-bool HasVehicleOnTunnelBridge(TileIndex tile, TileIndex endtile);
+bool HasVehicleOnTunnelBridge(TileIndex tile, TileIndex endtile, const Vehicle *ignore = NULL);
void DecreaseVehicleValue(Vehicle *v);
void CheckVehicleBreakdown(Vehicle *v);