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/*
* DeepDecomposer.h, 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
*
*/
#pragma once
#include "../Goals/AbstractGoal.h"
namespace NKAI
{
struct GoalHash
{
uint64_t operator()(const Goals::TSubgoal & goal) const
{
return goal->getHash();
}
};
using TGoalHashSet = std::unordered_map<Goals::TSubgoal, Goals::TGoalVec, GoalHash>;
class DeepDecomposer
{
private:
std::vector<Goals::TGoalVec> goals;
std::vector<TGoalHashSet> decompositionCache;
int depth;
const Nullkiller * ai;
public:
DeepDecomposer(const Nullkiller * ai);
void reset();
void decompose(Goals::TGoalVec & result, Goals::TSubgoal behavior, int depthLimit);
private:
Goals::TSubgoal aggregateGoals(int startDepth, Goals::TSubgoal last);
Goals::TSubgoal unwrapComposition(Goals::TSubgoal goal);
bool isCompositionLoop(Goals::TSubgoal goal);
Goals::TGoalVec decomposeCached(Goals::TSubgoal goal, bool & fromCache);
void addToCache(Goals::TSubgoal goal);
};
}
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