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vcmi/AI/Nullkiller/Pathfinding/AIPathfinder.cpp

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/*
* AIPathfinder.cpp, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#include "StdInc.h"
#include "AIPathfinder.h"
#include "AIPathfinderConfig.h"
#include "../../../CCallback.h"
#include "../../../lib/mapping/CMap.h"
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std::shared_ptr<AINodeStorage> AIPathfinder::storage;
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AIPathfinder::AIPathfinder(CPlayerSpecificInfoCallback * cb, VCAI * ai)
:cb(cb), ai(ai)
{
}
void AIPathfinder::init()
{
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storage.reset();
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}
bool AIPathfinder::isTileAccessible(const HeroPtr & hero, const int3 & tile) const
{
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return storage->isTileAccessible(hero, tile, EPathfindingLayer::LAND)
|| storage->isTileAccessible(hero, tile, EPathfindingLayer::SAIL);
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}
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std::vector<AIPath> AIPathfinder::getPathInfo(const int3 & tile) const
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{
const TerrainTile * tileInfo = cb->getTile(tile, false);
if(!tileInfo)
{
return std::vector<AIPath>();
}
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return storage->getChainInfo(tile, !tileInfo->isWater());
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}
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void AIPathfinder::updatePaths(std::vector<HeroPtr> heroes, bool useHeroChain)
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{
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if(!storage)
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{
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storage = std::make_shared<AINodeStorage>(cb->getMapSize());
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}
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logAi->debug("Recalculate all paths");
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int pass = 0;
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storage->clear();
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storage->setHeroes(heroes, ai);
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if(useHeroChain)
{
storage->setTownsAndDwellings(cb->getTownsInfo(), ai->visitableObjs);
}
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auto config = std::make_shared<AIPathfinding::AIPathfinderConfig>(cb, ai, storage);
bool continueCalculation = false;
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do
{
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logAi->trace("Recalculate paths pass %d", pass++);
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cb->calculatePaths(config);
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if(useHeroChain)
{
logAi->trace("Recalculate chain pass %d", pass);
continueCalculation = storage->calculateHeroChain();
if(!continueCalculation)
{
logAi->trace("Increase chain turn limit");
continueCalculation = storage->increaseHeroChainTurnLimit() && storage->calculateHeroChain();
}
}
} while(continueCalculation);
}