Split Fuzzy.cpp/h

AI/VCAI/FuzzyHelper.cpp

@@ -0,0 +1,156 @@
+/*
+ * FuzzyHelper.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 "FuzzyHelper.h"
+
+#include "../../lib/mapObjects/CommonConstructors.h"
+#include "VCAI.h"
+
+FuzzyHelper * fh;
+
+extern boost::thread_specific_ptr<VCAI> ai;
+
+Goals::TSubgoal FuzzyHelper::chooseSolution(Goals::TGoalVec vec)
+{
+	if(vec.empty()) //no possibilities found
+		return sptr(Goals::Invalid());
+
+	ai->cachedSectorMaps.clear();
+
+	//a trick to switch between heroes less often - calculatePaths is costly
+	auto sortByHeroes = [](const Goals::TSubgoal & lhs, const Goals::TSubgoal & rhs) -> bool
+	{
+		return lhs->hero.h < rhs->hero.h;
+	};
+	boost::sort(vec, sortByHeroes);
+
+	for(auto g : vec)
+	{
+		setPriority(g);
+	}
+
+	auto compareGoals = [](const Goals::TSubgoal & lhs, const Goals::TSubgoal & rhs) -> bool
+	{
+		return lhs->priority < rhs->priority;
+	};
+	return *boost::max_element(vec, compareGoals);
+}
+
+ui64 FuzzyHelper::estimateBankDanger(const CBank * bank)
+{
+	//this one is not fuzzy anymore, just calculate weighted average
+
+	auto objectInfo = VLC->objtypeh->getHandlerFor(bank->ID, bank->subID)->getObjectInfo(bank->appearance);
+
+	CBankInfo * bankInfo = dynamic_cast<CBankInfo *>(objectInfo.get());
+
+	ui64 totalStrength = 0;
+	ui8 totalChance = 0;
+	for(auto config : bankInfo->getPossibleGuards())
+	{
+		totalStrength += config.second.totalStrength * config.first;
+		totalChance += config.first;
+	}
+	return totalStrength / std::max<ui8>(totalChance, 1); //avoid division by zero
+
+}
+
+float FuzzyHelper::evaluate(Goals::VisitTile & g)
+{
+	return visitTileEngine.evaluate(g);
+}
+float FuzzyHelper::evaluate(Goals::VisitObj & g)
+{
+	return getObjEngine.evaluate(g);
+}
+float FuzzyHelper::evaluate(Goals::VisitHero & g)
+{
+	auto obj = ai->myCb->getObj(ObjectInstanceID(g.objid)); //we assume for now that these goals are similar
+	if(!obj)
+		return -100; //hero died in the meantime
+	//TODO: consider direct copy (constructor?)
+	g.setpriority(Goals::VisitTile(obj->visitablePos()).sethero(g.hero).setisAbstract(g.isAbstract).accept(this));
+	return g.priority;
+}
+float FuzzyHelper::evaluate(Goals::GatherArmy & g)
+{
+	//the more army we need, the more important goal
+	//the more army we lack, the less important goal
+	float army = g.hero->getArmyStrength();
+	float ratio = g.value / std::max(g.value - army, 2000.0f); //2000 is about the value of hero recruited from tavern
+	return 5 * (ratio / (ratio + 2)); //so 50% army gives 2.5, asymptotic 5
+}
+
+float FuzzyHelper::evaluate(Goals::ClearWayTo & g)
+{
+	if(!g.hero.h)
+		throw cannotFulfillGoalException("ClearWayTo called without hero!");
+
+	int3 t = ai->getCachedSectorMap(g.hero)->firstTileToGet(g.hero, g.tile);
+
+	if(t.valid())
+	{
+		if(isSafeToVisit(g.hero, t))
+		{
+			g.setpriority(Goals::VisitTile(g.tile).sethero(g.hero).setisAbstract(g.isAbstract).accept(this));
+		}
+		else
+		{
+			g.setpriority (Goals::GatherArmy(evaluateDanger(t, g.hero.h)*SAFE_ATTACK_CONSTANT).
+				sethero(g.hero).setisAbstract(true).accept(this));
+		}
+		return g.priority;
+	}
+	else
+		return -1;
+
+}
+
+float FuzzyHelper::evaluate(Goals::BuildThis & g)
+{
+	return g.priority; //TODO
+}
+float FuzzyHelper::evaluate(Goals::DigAtTile & g)
+{
+	return 0;
+}
+float FuzzyHelper::evaluate(Goals::CollectRes & g)
+{
+	return g.priority; //handled by ResourceManager
+}
+float FuzzyHelper::evaluate(Goals::Build & g)
+{
+	return 0;
+}
+float FuzzyHelper::evaluate(Goals::BuyArmy & g)
+{
+	return g.priority;
+}
+float FuzzyHelper::evaluate(Goals::Explore & g)
+{
+	return 1;
+}
+float FuzzyHelper::evaluate(Goals::RecruitHero & g)
+{
+	return 1;
+}
+float FuzzyHelper::evaluate(Goals::Invalid & g)
+{
+	return -1e10;
+}
+float FuzzyHelper::evaluate(Goals::AbstractGoal & g)
+{
+	logAi->warn("Cannot evaluate goal %s", g.name());
+	return g.priority;
+}
+void FuzzyHelper::setPriority(Goals::TSubgoal & g) //calls evaluate - Visitor pattern
+{
+	g->setpriority(g->accept(this)); //this enforces returned value is set
+}