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/*
* PathfinderCache.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 "PathfinderCache.h"
#include "CGPathNode.h"
#include "PathfinderOptions.h"
#include "../CGameInfoCallback.h"
#include "../mapObjects/CGHeroInstance.h"
VCMI_LIB_NAMESPACE_BEGIN
std::shared_ptr<PathfinderConfig> PathfinderCache::createConfig(const CGHeroInstance * h, CPathsInfo & out)
{
auto config = std::make_shared<SingleHeroPathfinderConfig>(out, cb, h);
config->options = options;
return config;
}
std::shared_ptr<CPathsInfo> PathfinderCache::buildPaths(const CGHeroInstance * h)
{
std::shared_ptr<CPathsInfo> result = std::make_shared<CPathsInfo>(cb->getMapSize(), h);
auto config = createConfig(h, *result);
cb->calculatePaths(config);
return result;
}
PathfinderCache::PathfinderCache(const CGameInfoCallback * cb, const PathfinderOptions & options)
: cb(cb)
, options(options)
{
}
void PathfinderCache::invalidatePaths()
{
std::lock_guard lock(pathCacheMutex);
pathCache.clear();
}
std::shared_ptr<const CPathsInfo> PathfinderCache::getPathsInfo(const CGHeroInstance * h)
{
std::lock_guard lock(pathCacheMutex);
auto iter = pathCache.find(h);
if(iter == std::end(pathCache) || iter->second->heroBonusTreeVersion != h->getTreeVersion())
{
auto result = buildPaths(h);
pathCache[h] = result;
return result;
}
else
return iter->second;
}
VCMI_LIB_NAMESPACE_END
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