void TraineeWalker::_computeWalkerPath( bool roadOnly )
{
if( !gfx::tilemap::isValidLocation( _d->baseLocation ) )
{
Logger::warning( "!!! WARNING: trainee walker baselocation is unaccessible at [%d,%d]", _d->baseLocation.i(), _d->baseLocation.j() );
deleteLater();
return;
}
BuildingPtr base = ( _city()->getOverlay( _d->baseLocation ).as<Building>());
if( !base.isValid() )
{
Logger::warning( "!!! WARNING: trainee walker base is null at [%d,%d]", _d->baseLocation.i(), _d->baseLocation.j() );
deleteLater();
return;
}
_d->maxNeed = 0; // need of this trainee in buildings
Pathway finalPath;
BuildingList buildings;
for( auto buildingType : _d->necBuildings )
buildings.append( _city()->statistic().objects.find<Building>( buildingType ) );
TilesArray startArea = roadOnly ? base->roadside() : base->enterArea();
DirectRoute droute;
_d->maxNeed = 0;
unsigned int minDistance = _d->maxDistance;
bool isNeedTrainee = false;
for( auto bld : buildings )
{
float howMuchNeedMyService = bld->evaluateTrainee( type() );
if( howMuchNeedMyService > 0 )
{
isNeedTrainee = true;
break;
}
}
if( !isNeedTrainee )
{
Logger::warning( "!!! WARNING: not need trainee walker from [%d,%d]", base->pos().i(), base->pos().j() );
deleteLater();
return;
}
std::set<BuildingPtr> checkedBuilding;
for( auto itile : startArea )
{
TilePos startPos = itile->pos();
for( auto bld : buildings )
{
bool buildingAlsoServicing = checkedBuilding.count( bld ) > 0;
if( buildingAlsoServicing )
continue;
checkedBuilding.insert( bld );
float curNeed = bld->evaluateTrainee( type() );
if( _d->maxNeed < curNeed )
{
Pathway way = PathwayHelper::create( startPos, bld,
roadOnly ? PathwayHelper::roadOnly : PathwayHelper::allTerrain );
if( way.isValid() && way.length() < minDistance )
{
_d->maxNeed = curNeed;
droute = DirectRoute( bld.object(), way );
}
}
}
}
if( droute.first.isValid() )
{
finalPath = droute.second;
_d->destLocation = droute.first->pos();
}
if( finalPath.isValid() )
{
// some building needs that trainee!!!
setPos( finalPath.startPos() );
setPathway( finalPath );
}
else
{
// nobody needs him...
deleteLater();
}
}