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461 lines
14 KiB
C++
461 lines
14 KiB
C++
/*
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* ConnectionsPlacer.cpp, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#include "StdInc.h"
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#include "ConnectionsPlacer.h"
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#include "../CMapGenerator.h"
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#include "../RmgMap.h"
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#include "../../TerrainHandler.h"
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#include "../../mapObjectConstructors/AObjectTypeHandler.h"
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#include "../../mapObjectConstructors/CObjectClassesHandler.h"
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#include "../../mapObjects/CGCreature.h"
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#include "../../mapping/CMapEditManager.h"
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#include "../RmgObject.h"
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#include "ObjectManager.h"
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#include "../Functions.h"
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#include "RoadPlacer.h"
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#include "../TileInfo.h"
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#include "WaterAdopter.h"
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#include "WaterProxy.h"
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#include "TownPlacer.h"
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#include <boost/interprocess/sync/scoped_lock.hpp>
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VCMI_LIB_NAMESPACE_BEGIN
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void ConnectionsPlacer::process()
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{
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collectNeighbourZones();
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auto diningPhilosophers = [this](std::function<void(const rmg::ZoneConnection&)> f)
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{
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for (auto& c : dConnections)
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{
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if (c.getZoneA() != zone.getId() && c.getZoneB() != zone.getId())
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continue;
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auto otherZone = map.getZones().at(c.getZoneB());
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auto* cp = otherZone->getModificator<ConnectionsPlacer>();
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while (cp)
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{
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RecursiveLock lock1(externalAccessMutex, boost::try_to_lock_t{});
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RecursiveLock lock2(cp->externalAccessMutex, boost::try_to_lock_t{});
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if (lock1.owns_lock() && lock2.owns_lock())
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{
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if (!vstd::contains(dCompleted, c))
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{
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f(c);
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}
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break;
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}
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}
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}
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};
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diningPhilosophers([this](const rmg::ZoneConnection& c)
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{
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selfSideDirectConnection(c);
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});
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createBorder();
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diningPhilosophers([this](const rmg::ZoneConnection& c)
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{
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selfSideIndirectConnection(c);
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});
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}
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void ConnectionsPlacer::init()
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{
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DEPENDENCY(WaterAdopter);
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DEPENDENCY(TownPlacer);
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POSTFUNCTION(RoadPlacer);
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POSTFUNCTION(ObjectManager);
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for(auto c : map.getMapGenOptions().getMapTemplate()->getConnectedZoneIds())
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addConnection(c);
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}
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void ConnectionsPlacer::addConnection(const rmg::ZoneConnection& connection)
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{
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dConnections.push_back(connection);
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}
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void ConnectionsPlacer::otherSideConnection(const rmg::ZoneConnection & connection)
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{
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dCompleted.push_back(connection);
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}
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void ConnectionsPlacer::selfSideDirectConnection(const rmg::ZoneConnection & connection)
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{
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bool success = false;
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auto otherZoneId = (connection.getZoneA() == zone.getId() ? connection.getZoneB() : connection.getZoneA());
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auto & otherZone = map.getZones().at(otherZoneId);
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bool createRoad = shouldGenerateRoad(connection);
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//1. Try to make direct connection
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//Do if it's not prohibited by terrain settings
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const auto * ourTerrain = VLC->terrainTypeHandler->getById(zone.getTerrainType());
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const auto * otherTerrain = VLC->terrainTypeHandler->getById(otherZone->getTerrainType());
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bool directProhibited = vstd::contains(ourTerrain->prohibitTransitions, otherZone->getTerrainType())
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|| vstd::contains(otherTerrain->prohibitTransitions, zone.getTerrainType());
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auto directConnectionIterator = dNeighbourZones.find(otherZoneId);
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if (directConnectionIterator != dNeighbourZones.end())
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{
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if (connection.getConnectionType() == rmg::EConnectionType::WIDE)
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{
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for (auto borderPos : directConnectionIterator->second)
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{
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//TODO: Refactor common code with direct connection
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int3 potentialPos = zone.areaPossible().nearest(borderPos);
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assert(borderPos != potentialPos);
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auto safetyGap = rmg::Area({ potentialPos });
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safetyGap.unite(safetyGap.getBorderOutside());
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safetyGap.intersect(zone.areaPossible());
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if (!safetyGap.empty())
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{
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safetyGap.intersect(otherZone->areaPossible());
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if (safetyGap.empty())
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{
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rmg::Area border(zone.getArea().getBorder());
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border.unite(otherZone->getArea().getBorder());
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auto costFunction = [&border](const int3& s, const int3& d)
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{
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return 1.f / (1.f + border.distanceSqr(d));
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};
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auto ourArea = zone.areaPossible() + zone.freePaths();
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auto theirArea = otherZone->areaPossible() + otherZone->freePaths();
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theirArea.add(potentialPos);
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rmg::Path ourPath(ourArea);
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rmg::Path theirPath(theirArea);
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ourPath.connect(zone.freePaths());
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ourPath = ourPath.search(potentialPos, true, costFunction);
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theirPath.connect(otherZone->freePaths());
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theirPath = theirPath.search(potentialPos, true, costFunction);
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if (ourPath.valid() && theirPath.valid())
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{
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zone.connectPath(ourPath);
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otherZone->connectPath(theirPath);
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otherZone->getModificator<ObjectManager>()->updateDistances(potentialPos);
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success = true;
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break;
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}
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}
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}
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}
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}
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}
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if (connection.getConnectionType() == rmg::EConnectionType::FICTIVE ||
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connection.getConnectionType() == rmg::EConnectionType::REPULSIVE)
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{
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//Fictive or repulsive connections are not real, take no action
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dCompleted.push_back(connection);
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return;
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}
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float maxDist = -10e6;
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if(!success && !directProhibited && directConnectionIterator != dNeighbourZones.end())
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{
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int3 guardPos(-1, -1, -1);
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int3 roadNode;
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for (auto borderPos : directConnectionIterator->second)
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{
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int3 potentialPos = zone.areaPossible().nearest(borderPos);
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assert(borderPos != potentialPos);
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//Take into account distance to objects from both sides
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float dist = std::min(map.getTileInfo(potentialPos).getNearestObjectDistance(),
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map.getTileInfo(borderPos).getNearestObjectDistance());
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if (dist > 3) //Don't place guards at adjacent tiles
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{
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auto safetyGap = rmg::Area({ potentialPos });
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safetyGap.unite(safetyGap.getBorderOutside());
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safetyGap.intersect(zone.areaPossible());
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if (!safetyGap.empty())
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{
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safetyGap.intersect(otherZone->areaPossible());
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if (safetyGap.empty())
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{
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float distanceToCenter = zone.getPos().dist2d(potentialPos) * otherZone->getPos().dist2d(potentialPos);
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auto localDist = (dist - distanceToCenter) * //Prefer close to zone center
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(std::max(distanceToCenter, dist) / std::min(distanceToCenter, dist));
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//Distance to center dominates and is negative, so imbalanced proportions will result in huge penalty
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if (localDist > maxDist)
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{
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maxDist = localDist;
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guardPos = potentialPos;
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roadNode = borderPos;
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}
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}
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}
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}
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}
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if(guardPos.valid())
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{
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assert(zone.getModificator<ObjectManager>());
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auto & manager = *zone.getModificator<ObjectManager>();
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auto * monsterType = manager.chooseGuard(connection.getGuardStrength(), true);
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rmg::Area border(zone.getArea().getBorder());
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border.unite(otherZone->getArea().getBorder());
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auto costFunction = [&border](const int3 & s, const int3 & d)
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{
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return 1.f / (1.f + border.distanceSqr(d));
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};
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auto ourArea = zone.areaPossible() + zone.freePaths();
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auto theirArea = otherZone->areaPossible() + otherZone->freePaths();
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theirArea.add(guardPos);
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rmg::Path ourPath(ourArea);
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rmg::Path theirPath(theirArea);
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ourPath.connect(zone.freePaths());
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ourPath = ourPath.search(guardPos, true, costFunction);
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theirPath.connect(otherZone->freePaths());
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theirPath = theirPath.search(guardPos, true, costFunction);
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if(ourPath.valid() && theirPath.valid())
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{
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zone.connectPath(ourPath);
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otherZone->connectPath(theirPath);
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if(monsterType)
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{
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rmg::Object monster(*monsterType);
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monster.setPosition(guardPos);
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manager.placeObject(monster, false, true);
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//Place objects away from the monster in the other zone, too
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otherZone->getModificator<ObjectManager>()->updateDistances(monster);
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}
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else
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{
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//Update distances from empty passage, too
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zone.areaPossible().erase(guardPos);
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zone.freePaths().add(guardPos);
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map.setOccupied(guardPos, ETileType::FREE);
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manager.updateDistances(guardPos);
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otherZone->getModificator<ObjectManager>()->updateDistances(guardPos);
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}
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if (createRoad)
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{
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assert(zone.getModificator<RoadPlacer>());
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zone.getModificator<RoadPlacer>()->addRoadNode(guardPos);
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assert(otherZone->getModificator<RoadPlacer>());
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otherZone->getModificator<RoadPlacer>()->addRoadNode(roadNode);
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assert(otherZone->getModificator<ConnectionsPlacer>());
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otherZone->getModificator<ConnectionsPlacer>()->otherSideConnection(connection);
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}
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success = true;
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}
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}
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}
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//2. connect via water
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bool waterMode = map.getMapGenOptions().getWaterContent() != EWaterContent::NONE;
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if(waterMode && zone.isUnderground() == otherZone->isUnderground())
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{
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if(generator.getZoneWater() && generator.getZoneWater()->getModificator<WaterProxy>())
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{
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if(generator.getZoneWater()->getModificator<WaterProxy>()->waterKeepConnection(connection, createRoad))
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{
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assert(otherZone->getModificator<ConnectionsPlacer>());
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otherZone->getModificator<ConnectionsPlacer>()->otherSideConnection(connection);
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success = true;
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}
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}
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}
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if(success)
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dCompleted.push_back(connection);
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}
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void ConnectionsPlacer::selfSideIndirectConnection(const rmg::ZoneConnection & connection)
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{
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bool success = false;
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auto otherZoneId = (connection.getZoneA() == zone.getId() ? connection.getZoneB() : connection.getZoneA());
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auto & otherZone = map.getZones().at(otherZoneId);
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bool allowRoad = shouldGenerateRoad(connection);
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//3. place subterrain gates
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if(zone.isUnderground() != otherZone->isUnderground())
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{
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int3 zShift(0, 0, zone.getPos().z - otherZone->getPos().z);
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auto commonArea = zone.areaPossible() * (otherZone->areaPossible() + zShift);
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if(!commonArea.empty())
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{
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assert(zone.getModificator<ObjectManager>());
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auto & manager = *zone.getModificator<ObjectManager>();
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assert(otherZone->getModificator<ObjectManager>());
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auto & managerOther = *otherZone->getModificator<ObjectManager>();
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auto factory = VLC->objtypeh->getHandlerFor(Obj::SUBTERRANEAN_GATE, 0);
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auto * gate1 = factory->create();
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auto * gate2 = factory->create();
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rmg::Object rmgGate1(*gate1);
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rmg::Object rmgGate2(*gate2);
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rmgGate1.setTemplate(zone.getTerrainType());
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rmgGate2.setTemplate(otherZone->getTerrainType());
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bool guarded1 = manager.addGuard(rmgGate1, connection.getGuardStrength(), true);
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bool guarded2 = managerOther.addGuard(rmgGate2, connection.getGuardStrength(), true);
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int minDist = 3;
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std::scoped_lock doubleLock(zone.areaMutex, otherZone->areaMutex);
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rmg::Path path2(otherZone->area());
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rmg::Path path1 = manager.placeAndConnectObject(commonArea, rmgGate1, [this, minDist, &path2, &rmgGate1, &zShift, guarded2, &managerOther, &rmgGate2 ](const int3 & tile)
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{
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auto ti = map.getTileInfo(tile);
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auto otherTi = map.getTileInfo(tile - zShift);
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float dist = ti.getNearestObjectDistance();
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float otherDist = otherTi.getNearestObjectDistance();
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if(dist < minDist || otherDist < minDist)
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return -1.f;
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//This could fail is accessibleArea is below the map
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rmg::Area toPlace(rmgGate1.getArea() + rmgGate1.getAccessibleArea());
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auto inTheMap = toPlace.getTilesVector();
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toPlace.clear();
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for (const int3& tile : inTheMap)
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{
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if (map.isOnMap(tile))
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{
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toPlace.add(tile);
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}
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}
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toPlace.translate(-zShift);
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path2 = managerOther.placeAndConnectObject(toPlace, rmgGate2, minDist, guarded2, true, ObjectManager::OptimizeType::NONE);
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return path2.valid() ? (dist * otherDist) : -1.f;
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}, guarded1, true, ObjectManager::OptimizeType::DISTANCE);
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if(path1.valid() && path2.valid())
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{
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zone.connectPath(path1);
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otherZone->connectPath(path2);
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manager.placeObject(rmgGate1, guarded1, true, allowRoad);
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managerOther.placeObject(rmgGate2, guarded2, true, allowRoad);
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assert(otherZone->getModificator<ConnectionsPlacer>());
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otherZone->getModificator<ConnectionsPlacer>()->otherSideConnection(connection);
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success = true;
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}
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}
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}
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//4. place monoliths/portals
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if(!success)
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{
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auto factory = VLC->objtypeh->getHandlerFor(Obj::MONOLITH_TWO_WAY, generator.getNextMonlithIndex());
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auto * teleport1 = factory->create();
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auto * teleport2 = factory->create();
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RequiredObjectInfo obj1(teleport1, connection.getGuardStrength(), allowRoad);
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RequiredObjectInfo obj2(teleport2, connection.getGuardStrength(), allowRoad);
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zone.getModificator<ObjectManager>()->addRequiredObject(obj1);
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otherZone->getModificator<ObjectManager>()->addRequiredObject(obj2);
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assert(otherZone->getModificator<ConnectionsPlacer>());
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otherZone->getModificator<ConnectionsPlacer>()->otherSideConnection(connection);
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success = true;
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}
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if(success)
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dCompleted.push_back(connection);
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}
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void ConnectionsPlacer::collectNeighbourZones()
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{
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auto border = zone.area().getBorderOutside();
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for(const auto & i : border)
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{
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if(!map.isOnMap(i))
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continue;
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auto zid = map.getZoneID(i);
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assert(zid != zone.getId());
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dNeighbourZones[zid].insert(i);
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}
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}
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bool ConnectionsPlacer::shouldGenerateRoad(const rmg::ZoneConnection& connection) const
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{
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return connection.getRoadOption() == rmg::ERoadOption::ROAD_TRUE ||
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(connection.getRoadOption() == rmg::ERoadOption::ROAD_RANDOM && zone.getRand().nextDouble() >= 0.5f);
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}
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void ConnectionsPlacer::createBorder()
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{
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rmg::Area borderArea(zone.getArea().getBorder());
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rmg::Area borderOutsideArea(zone.getArea().getBorderOutside());
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auto blockBorder = borderArea.getSubarea([this, &borderOutsideArea](const int3 & t)
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{
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auto tile = borderOutsideArea.nearest(t);
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return map.isOnMap(tile) && map.getZones()[map.getZoneID(tile)]->getType() != ETemplateZoneType::WATER;
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});
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//No border for wide connections
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for (auto& connection : zone.getConnections()) // We actually placed that connection already
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{
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auto otherZone = connection.getOtherZoneId(zone.getId());
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if (connection.getConnectionType() == rmg::EConnectionType::WIDE)
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{
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auto sharedBorder = borderArea.getSubarea([this, otherZone, &borderOutsideArea](const int3 & t)
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{
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auto tile = borderOutsideArea.nearest(t);
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return map.isOnMap(tile) && map.getZones()[map.getZoneID(tile)]->getId() == otherZone;
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});
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blockBorder.subtract(sharedBorder);
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}
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};
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Zone::Lock lock(zone.areaMutex); //Protect from erasing same tiles again
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for(const auto & tile : blockBorder.getTilesVector())
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{
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if(map.isPossible(tile))
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{
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map.setOccupied(tile, ETileType::BLOCKED);
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zone.areaPossible().erase(tile);
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}
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map.foreachDirectNeighbour(tile, [this](int3 &nearbyPos)
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{
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if(map.isPossible(nearbyPos) && map.getZoneID(nearbyPos) == zone.getId())
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{
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map.setOccupied(nearbyPos, ETileType::BLOCKED);
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zone.areaPossible().erase(nearbyPos);
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}
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});
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}
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}
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VCMI_LIB_NAMESPACE_END
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