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(svn r21508) -Codechange: move the code to handle the pathfinder's "path found" status to a separate function

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rubidium 2010-12-13 21:55:06 +00:00
parent 55a0e31c44
commit 6d831906a3
3 changed files with 35 additions and 26 deletions
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27
src/train_cmd.cpp
View File

@ -2408,32 +2408,7 @@ static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir,
Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, &path_not_found, do_track_reservation, &res_dest);
if (new_tile == tile) best_track = next_track;
/* handle "path not found" state */
if (path_not_found) {
/* PF didn't find the route */
if (!HasBit(v->vehicle_flags, VF_PATHFINDER_LOST)) {
/* It is first time the problem occurred, set the "lost" flag. */
SetBit(v->vehicle_flags, VF_PATHFINDER_LOST);
/* and notify user about the event */
AI::NewEvent(v->owner, new AIEventVehicleLost(v->index));
if (_settings_client.gui.lost_vehicle_warn && v->owner == _local_company) {
SetDParam(0, v->index);
AddVehicleNewsItem(
STR_NEWS_VEHICLE_IS_LOST,
NS_ADVICE,
v->index
);
}
}
} else {
/* route found, is the train marked with "path not found" flag? */
if (HasBit(v->vehicle_flags, VF_PATHFINDER_LOST)) {
/* clear the flag as the PF's problem was solved */
ClrBit(v->vehicle_flags, VF_PATHFINDER_LOST);
/* can we also delete the "News" item somehow? */
}
}
v->HandlePathfindingResult(!path_not_found);
}
/* No track reservation requested -> finished. */

33
src/vehicle.cpp
View File

@ -624,6 +624,39 @@ bool Vehicle::IsEngineCountable() const
}
}
/**
* Handle the pathfinding result, especially the lost status.
* If the vehicle is now lost and wasn't previously fire an
* event to the AIs and a news message to the user. If the
* vehicle is not lost anymore remove the news message.
* @param path_found Whether the vehicle has a path to its destination.
*/
void Vehicle::HandlePathfindingResult(bool path_found)
{
if (path_found) {
/* Route found, is the vehicle marked with "lost" flag? */
if (!HasBit(this->vehicle_flags, VF_PATHFINDER_LOST)) return;
/* Clear the flag as the PF's problem was solved. */
ClrBit(this->vehicle_flags, VF_PATHFINDER_LOST);
/* Delete the news item. */
DeleteVehicleNews(this->index, STR_NEWS_VEHICLE_IS_LOST);
return;
}
/* Were we already lost? */
if (HasBit(this->vehicle_flags, VF_PATHFINDER_LOST)) return;
/* It is first time the problem occurred, set the "lost" flag. */
SetBit(this->vehicle_flags, VF_PATHFINDER_LOST);
/* Notify user about the event. */
AI::NewEvent(this->owner, new AIEventVehicleLost(this->index));
if (_settings_client.gui.lost_vehicle_warn && this->owner == _local_company) {
SetDParam(0, this->index);
AddVehicleNewsItem(STR_NEWS_VEHICLE_IS_LOST, NS_ADVICE, this->index);
}
}
void Vehicle::PreDestructor()
{
if (CleaningPool()) return;

1
src/vehicle_base.h
View File

@ -660,6 +660,7 @@ public:
bool IsEngineCountable() const;
bool HasDepotOrder() const;
void HandlePathfindingResult(bool path_found);
};
#define FOR_ALL_VEHICLES_FROM(var, start) FOR_ALL_ITEMS_FROM(Vehicle, vehicle_index, var, start)