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111 lines
2.6 KiB
C++
111 lines
2.6 KiB
C++
/*
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* AIPathfinder.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 "AIPathfinder.h"
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#include "AIPathfinderConfig.h"
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#include "../../../CCallback.h"
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#include "../../../lib/mapping/CMap.h"
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std::vector<std::shared_ptr<AINodeStorage>> AIPathfinder::storagePool;
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std::map<HeroPtr, std::shared_ptr<AINodeStorage>> AIPathfinder::storageMap;
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AIPathfinder::AIPathfinder(CPlayerSpecificInfoCallback * cb, VCAI * ai)
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:cb(cb), ai(ai)
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{
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}
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void AIPathfinder::init()
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{
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storagePool.clear();
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storageMap.clear();
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}
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bool AIPathfinder::isTileAccessible(const HeroPtr & hero, const int3 & tile) const
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{
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std::shared_ptr<const AINodeStorage> nodeStorage = getStorage(hero);
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return nodeStorage->isTileAccessible(tile, EPathfindingLayer::LAND)
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|| nodeStorage->isTileAccessible(tile, EPathfindingLayer::SAIL);
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}
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std::vector<AIPath> AIPathfinder::getPathInfo(const HeroPtr & hero, const int3 & tile) const
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{
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std::shared_ptr<const AINodeStorage> nodeStorage = getStorage(hero);
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const TerrainTile * tileInfo = cb->getTile(tile, false);
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if(!tileInfo)
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{
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return std::vector<AIPath>();
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}
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return nodeStorage->getChainInfo(tile, !tileInfo->isWater());
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}
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void AIPathfinder::updatePaths(std::vector<HeroPtr> heroes)
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{
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storageMap.clear();
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auto calculatePaths = [&](const CGHeroInstance * hero, std::shared_ptr<AIPathfinding::AIPathfinderConfig> config)
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{
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logAi->debug("Recalculate paths for %s", hero->name);
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cb->calculatePaths(config);
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};
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std::vector<CThreadHelper::Task> calculationTasks;
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for(HeroPtr hero : heroes)
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{
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std::shared_ptr<AINodeStorage> nodeStorage;
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if(storageMap.size() < storagePool.size())
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{
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nodeStorage = storagePool.at(storageMap.size());
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}
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else
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{
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nodeStorage = std::make_shared<AINodeStorage>(cb->getMapSize());
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storagePool.push_back(nodeStorage);
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}
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storageMap[hero] = nodeStorage;
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nodeStorage->setHero(hero, ai);
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auto config = std::make_shared<AIPathfinding::AIPathfinderConfig>(cb, ai, nodeStorage);
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calculationTasks.push_back(std::bind(calculatePaths, hero.get(), config));
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}
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int threadsCount = std::min(
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boost::thread::hardware_concurrency(),
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(uint32_t)calculationTasks.size());
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if(threadsCount <= 1)
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{
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for(auto task : calculationTasks)
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{
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task();
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}
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}
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else
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{
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CThreadHelper helper(&calculationTasks, threadsCount);
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helper.run();
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}
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}
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std::shared_ptr<const AINodeStorage> AIPathfinder::getStorage(const HeroPtr & hero) const
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{
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return storageMap.at(hero);
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}
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