TGoalVec VisitTile::getAllPossibleSubgoals()
{
assert(cb->isInTheMap(tile));
TGoalVec ret;
if (!cb->isVisible(tile))
ret.push_back (sptr(Goals::Explore())); //what sense does it make?
else
{
std::vector<const CGHeroInstance *> heroes;
if (hero)
heroes.push_back(hero.h); //use assigned hero if any
else
heroes = cb->getHeroesInfo(); //use most convenient hero
for (auto h : heroes)
{
if (ai->isAccessibleForHero(tile, h))
ret.push_back (sptr(Goals::VisitTile(tile).sethero(h)));
}
if (ai->canRecruitAnyHero())
ret.push_back (sptr(Goals::RecruitHero()));
}
if (ret.empty())
{
auto obj = frontOrNull(cb->getVisitableObjs(tile));
if (obj && obj->ID == Obj::HERO && obj->tempOwner == ai->playerID) //our own hero stands on that tile
ret.push_back (sptr(Goals::VisitTile(tile).sethero(dynamic_cast<const CGHeroInstance *>(obj)).setisElementar(true)));
else
ret.push_back (sptr(Goals::ClearWayTo(tile)));
}
//important - at least one sub-goal must handle case which is impossible to fulfill (unreachable tile)
return ret;
}
TGoalVec ClearWayTo::getAllPossibleSubgoals()
{
TGoalVec ret;
for (auto h : cb->getHeroesInfo())
{
if ((hero && hero->visitablePos() == tile && hero == *h) || //we can't free the way ourselves
h->visitablePos() == tile) //we are already on that tile! what does it mean?
continue;
SectorMap sm(h);
int3 tileToHit = sm.firstTileToGet(hero ? hero : h, tile);
//if our hero is trapped, make sure we request clearing the way from OUR perspective
if (!tileToHit.valid())
continue;
if (isBlockedBorderGate(tileToHit))
{ //FIXME: this way we'll not visit gate and activate quest :?
ret.push_back (sptr (Goals::FindObj (Obj::KEYMASTER, cb->getTile(tileToHit)->visitableObjects.back()->subID)));
}
auto topObj = cb->getTopObj(tileToHit);
if(topObj)
{
if (topObj->ID == Obj::HERO && cb->getPlayerRelations(h->tempOwner, topObj->tempOwner) != PlayerRelations::ENEMIES)
if (topObj != hero.get(true)) //the hero we wnat to free
logAi->errorStream() << boost::format("%s stands in the way of %s") % topObj->getHoverText() % h->getHoverText();
if (topObj->ID == Obj::QUEST_GUARD || topObj->ID == Obj::BORDERGUARD)
{
if (shouldVisit(h, topObj))
{
//do NOT use VISIT_TILE, as tile with quets guard can't be visited
ret.push_back (sptr (Goals::GetObj(topObj->id.getNum()).sethero(h)));
}
else
{
//TODO: we should be able to return apriopriate quest here (VCAI::striveToQuest)
logAi->debugStream() << "Quest guard blocks the way to " + tile();
}
}
}
else
ret.push_back (sptr (Goals::VisitTile(tileToHit).sethero(h)));
}
if (ai->canRecruitAnyHero())
ret.push_back (sptr (Goals::RecruitHero()));
if (ret.empty())
{
logAi->warnStream() << "There is no known way to clear the way to tile " + tile();
throw goalFulfilledException (sptr(*this)); //make sure asigned hero gets unlocked
}
return ret;
}
TGoalVec Conquer::getAllPossibleSubgoals()
{
TGoalVec ret;
auto conquerable = [](const CGObjectInstance * obj) -> bool
{
if (cb->getPlayerRelations(ai->playerID, obj->tempOwner) == PlayerRelations::ENEMIES)
{
switch (obj->ID.num)
{
case Obj::TOWN:
case Obj::HERO:
case Obj::CREATURE_GENERATOR1:
case Obj::MINE: //TODO: check ai->knownSubterraneanGates
return true;
}
}
return false;
};
std::vector<const CGObjectInstance *> objs;
for (auto obj : ai->visitableObjs)
{
if (conquerable(obj))
objs.push_back (obj);
}
for (auto h : cb->getHeroesInfo())
{
SectorMap sm(h);
std::vector<const CGObjectInstance *> ourObjs(objs); //copy common objects
for (auto obj : ai->reservedHeroesMap[h]) //add objects reserved by this hero
{
if (conquerable(obj))
ourObjs.push_back(obj);
}
for (auto obj : ourObjs) //double loop, performance risk?
{
auto t = sm.firstTileToGet(h, obj->visitablePos()); //we assume that no more than one tile on the way is guarded
if (ai->canReachTile(h, t))
ret.push_back (sptr(Goals::ClearWayTo(obj->visitablePos(), h).setisAbstract(true)));
}
}
if (!objs.empty() && ai->canRecruitAnyHero()) //probably no point to recruit hero if we see no objects to capture
ret.push_back (sptr(Goals::RecruitHero()));
if (ret.empty())
ret.push_back (sptr(Goals::Explore())); //we need to find an enemy
return ret;
}
TGoalVec VisitTile::getAllPossibleSubgoals()
{
assert(cb->isInTheMap(tile));
TGoalVec ret;
if (!cb->isVisible(tile))
ret.push_back (sptr(Goals::Explore())); //what sense does it make?
else
{
std::vector<const CGHeroInstance *> heroes;
if (hero)
heroes.push_back(hero.h); //use assigned hero if any
else
heroes = cb->getHeroesInfo(); //use most convenient hero
for (auto h : heroes)
{
if (ai->isAccessibleForHero(tile, h))
ret.push_back (sptr(Goals::VisitTile(tile).sethero(h)));
}
if (ai->canRecruitAnyHero())
ret.push_back (sptr(Goals::RecruitHero()));
}
if(ret.empty())
{
auto obj = vstd::frontOrNull(cb->getVisitableObjs(tile));
if(obj && obj->ID == Obj::HERO && obj->tempOwner == ai->playerID) //our own hero stands on that tile
{
if (hero.get(true) && hero->id == obj->id) //if it's assigned hero, visit tile. If it's different hero, we can't visit tile now
ret.push_back(sptr(Goals::VisitTile(tile).sethero(dynamic_cast<const CGHeroInstance *>(obj)).setisElementar(true)));
else
throw cannotFulfillGoalException("Tile is already occupied by another hero "); //FIXME: we should give up this tile earlier
}
else
ret.push_back (sptr(Goals::ClearWayTo(tile)));
}
//important - at least one sub-goal must handle case which is impossible to fulfill (unreachable tile)
return ret;
}
TGoalVec GatherArmy::getAllPossibleSubgoals()
{
//get all possible towns, heroes and dwellings we may use
TGoalVec ret;
//TODO: include evaluation of monsters gather in calculation
for (auto t : cb->getTownsInfo())
{
auto pos = t->visitablePos();
if (ai->isAccessibleForHero(pos, hero))
{
if(!t->visitingHero && howManyReinforcementsCanGet(hero,t))
{
if (!vstd::contains (ai->townVisitsThisWeek[hero], t))
ret.push_back (sptr (Goals::VisitTile(pos).sethero(hero)));
}
auto bid = ai->canBuildAnyStructure(t, std::vector<BuildingID>
(unitsSource, unitsSource + ARRAY_COUNT(unitsSource)), 8 - cb->getDate(Date::DAY_OF_WEEK));
if (bid != BuildingID::NONE)
ret.push_back (sptr(BuildThis(bid, t)));
}
}
auto otherHeroes = cb->getHeroesInfo();
auto heroDummy = hero;
erase_if(otherHeroes, [heroDummy](const CGHeroInstance * h)
{
return (h == heroDummy.h || !ai->isAccessibleForHero(heroDummy->visitablePos(), h, true)
|| !ai->canGetArmy(heroDummy.h, h) || ai->getGoal(h)->goalType == Goals::GATHER_ARMY);
});
for (auto h : otherHeroes)
{
ret.push_back (sptr (Goals::VisitHero(h->id.getNum()).setisAbstract(true).sethero(hero)));
//go to the other hero if we are faster
ret.push_back (sptr (Goals::VisitHero(hero->id.getNum()).setisAbstract(true).sethero(h)));
//let the other hero come to us
}
std::vector <const CGObjectInstance *> objs;
for (auto obj : ai->visitableObjs)
{
if(obj->ID == Obj::CREATURE_GENERATOR1)
{
auto relationToOwner = cb->getPlayerRelations(obj->getOwner(), ai->playerID);
//Use flagged dwellings only when there are available creatures that we can afford
if(relationToOwner == PlayerRelations::SAME_PLAYER)
{
auto dwelling = dynamic_cast<const CGDwelling*>(obj);
for(auto & creLevel : dwelling->creatures)
{
if(creLevel.first)
{
for(auto & creatureID : creLevel.second)
{
auto creature = VLC->creh->creatures[creatureID];
if (ai->freeResources().canAfford(creature->cost))
objs.push_back(obj);
}
}
}
}
}
}
for(auto h : cb->getHeroesInfo())
{
for (auto obj : objs)
{ //find safe dwelling
auto pos = obj->visitablePos();
if (ai->isGoodForVisit(obj, h))
ret.push_back (sptr (Goals::VisitTile(pos).sethero(h)));
}
}
if (ai->canRecruitAnyHero()) //this is not stupid in early phase of game
ret.push_back (sptr(Goals::RecruitHero()));
if (ret.empty())
{
if (hero == ai->primaryHero() || value >= 1.1f)
ret.push_back (sptr(Goals::Explore()));
else //workaround to break loop - seemingly there are no ways to explore left
throw goalFulfilledException (sptr(Goals::GatherArmy(0).sethero(hero)));
}
return ret;
}
TGoalVec Explore::getAllPossibleSubgoals()
{
TGoalVec ret;
std::vector<const CGHeroInstance *> heroes;
if (hero)
heroes.push_back(hero.h);
else
{
//heroes = ai->getUnblockedHeroes();
heroes = cb->getHeroesInfo();
erase_if (heroes, [](const HeroPtr h)
{
if (ai->getGoal(h)->goalType == Goals::EXPLORE) //do not reassign hero who is already explorer
return true;
return !h->movement; //saves time, immobile heroes are useless anyway
});
}
//try to use buildings that uncover map
std::vector<const CGObjectInstance *> objs;
for (auto obj : ai->visitableObjs)
{
if (!vstd::contains(ai->alreadyVisited, obj))
{
switch (obj->ID.num)
{
case Obj::REDWOOD_OBSERVATORY:
case Obj::PILLAR_OF_FIRE:
case Obj::CARTOGRAPHER:
case Obj::SUBTERRANEAN_GATE: //TODO: check ai->knownSubterraneanGates
objs.push_back (obj);
}
}
}
for (auto h : heroes)
{
SectorMap sm(h);
for (auto obj : objs) //double loop, performance risk?
{
auto t = sm.firstTileToGet(h, obj->visitablePos()); //we assume that no more than one tile on the way is guarded
if (ai->canReachTile(h, t))
ret.push_back (sptr(Goals::ClearWayTo(obj->visitablePos(), h).setisAbstract(true)));
}
int3 t = whereToExplore(h);
if (t.valid())
{
ret.push_back (sptr (Goals::VisitTile(t).sethero(h)));
}
else if (hero.h == h || (!hero && h == ai->primaryHero().h)) //check this only ONCE, high cost
{
t = ai->explorationDesperate(h);
if (t.valid()) //don't waste time if we are completely blocked
ret.push_back (sptr(Goals::ClearWayTo(t, h).setisAbstract(true)));
}
}
//we either don't have hero yet or none of heroes can explore
if ((!hero || ret.empty()) && ai->canRecruitAnyHero())
ret.push_back (sptr(Goals::RecruitHero()));
if (ret.empty())
{
throw goalFulfilledException (sptr(Goals::Explore().sethero(hero)));
}
//throw cannotFulfillGoalException("Cannot explore - no possible ways found!");
return ret;
}
TGoalVec ClearWayTo::getAllPossibleSubgoals()
{
TGoalVec ret;
std::vector<const CGHeroInstance *> heroes;
if (hero)
heroes.push_back(hero.h);
else
{
heroes = cb->getHeroesInfo();
}
for (auto h : heroes)
{
//TODO: handle clearing way to allied heroes that are blocked
//if ((hero && hero->visitablePos() == tile && hero == *h) || //we can't free the way ourselves
// h->visitablePos() == tile) //we are already on that tile! what does it mean?
// continue;
//if our hero is trapped, make sure we request clearing the way from OUR perspective
SectorMap sm(h);
int3 tileToHit = sm.firstTileToGet(h, tile);
if (!tileToHit.valid())
continue;
if (isBlockedBorderGate(tileToHit))
{ //FIXME: this way we'll not visit gate and activate quest :?
ret.push_back (sptr (Goals::FindObj (Obj::KEYMASTER, cb->getTile(tileToHit)->visitableObjects.back()->subID)));
}
auto topObj = cb->getTopObj(tileToHit);
if (topObj)
{
if (vstd::contains(ai->reservedObjs, topObj) && !vstd::contains(ai->reservedHeroesMap[h], topObj))
{
throw goalFulfilledException (sptr(Goals::ClearWayTo(tile, h)));
continue; //do not capure object reserved by other hero
}
if (topObj->ID == Obj::HERO && cb->getPlayerRelations(h->tempOwner, topObj->tempOwner) != PlayerRelations::ENEMIES)
if (topObj != hero.get(true)) //the hero we want to free
logAi->errorStream() << boost::format("%s stands in the way of %s") % topObj->getHoverText() % h->getHoverText();
if (topObj->ID == Obj::QUEST_GUARD || topObj->ID == Obj::BORDERGUARD)
{
if (shouldVisit(h, topObj))
{
//do NOT use VISIT_TILE, as tile with quets guard can't be visited
ret.push_back (sptr (Goals::GetObj(topObj->id.getNum()).sethero(h)));
continue; //do not try to visit tile or gather army
}
else
{
//TODO: we should be able to return apriopriate quest here (VCAI::striveToQuest)
logAi->debugStream() << "Quest guard blocks the way to " + tile();
}
}
}
if (isSafeToVisit(h, tileToHit)) //this makes sense only if tile is guarded, but there i no quest object
{
ret.push_back (sptr (Goals::VisitTile(tileToHit).sethero(h)));
}
else
{
ret.push_back (sptr (Goals::GatherArmy(evaluateDanger(tileToHit, h)*SAFE_ATTACK_CONSTANT).
sethero(h).setisAbstract(true)));
}
}
if (ai->canRecruitAnyHero())
ret.push_back (sptr (Goals::RecruitHero()));
if (ret.empty())
{
logAi->warnStream() << "There is no known way to clear the way to tile " + tile();
throw goalFulfilledException (sptr(Goals::ClearWayTo(tile))); //make sure asigned hero gets unlocked
}
return ret;
}
TGoalVec Conquer::getAllPossibleSubgoals()
{
TGoalVec ret;
auto conquerable = [](const CGObjectInstance * obj) -> bool
{
if (cb->getPlayerRelations(ai->playerID, obj->tempOwner) == PlayerRelations::ENEMIES)
{
switch (obj->ID.num)
{
case Obj::TOWN:
case Obj::HERO:
case Obj::CREATURE_GENERATOR1:
case Obj::MINE: //TODO: check ai->knownSubterraneanGates
return true;
}
}
return false;
};
std::vector<const CGObjectInstance *> objs;
for (auto obj : ai->visitableObjs)
{
if (conquerable(obj))
objs.push_back (obj);
}
for (auto h : cb->getHeroesInfo())
{
auto sm = ai->getCachedSectorMap(h);
std::vector<const CGObjectInstance *> ourObjs(objs); //copy common objects
for (auto obj : ai->reservedHeroesMap[h]) //add objects reserved by this hero
{
if (conquerable(obj))
ourObjs.push_back(obj);
}
for (auto obj : ourObjs)
{
int3 dest = obj->visitablePos();
auto t = sm->firstTileToGet(h, dest); //we assume that no more than one tile on the way is guarded
if (t.valid()) //we know any path at all
{
if (ai->isTileNotReserved(h, t)) //no other hero wants to conquer that tile
{
if (isSafeToVisit(h, dest))
{
if (dest != t) //there is something blocking our way
ret.push_back(sptr(Goals::ClearWayTo(dest, h).setisAbstract(true)));
else
{
if (obj->ID.num == Obj::HERO) //enemy hero may move to other position
ret.push_back(sptr(Goals::VisitHero(obj->id.getNum()).sethero(h).setisAbstract(true)));
else //just visit that tile
ret.push_back(sptr(Goals::VisitTile(dest).sethero(h).setisAbstract(true)));
}
}
else //we need to get army in order to conquer that place
ret.push_back(sptr(Goals::GatherArmy(evaluateDanger(dest, h) * SAFE_ATTACK_CONSTANT).sethero(h).setisAbstract(true)));
}
}
}
}
if (!objs.empty() && ai->canRecruitAnyHero()) //probably no point to recruit hero if we see no objects to capture
ret.push_back (sptr(Goals::RecruitHero()));
if (ret.empty())
ret.push_back (sptr(Goals::Explore())); //we need to find an enemy
return ret;
}
TGoalVec Explore::getAllPossibleSubgoals()
{
TGoalVec ret;
std::vector<const CGHeroInstance *> heroes;
if (hero)
heroes.push_back(hero.h);
else
{
//heroes = ai->getUnblockedHeroes();
heroes = cb->getHeroesInfo();
vstd::erase_if(heroes, [](const HeroPtr h)
{
if (ai->getGoal(h)->goalType == Goals::EXPLORE) //do not reassign hero who is already explorer
return true;
if (!ai->isAbleToExplore(h))
return true;
return !h->movement; //saves time, immobile heroes are useless anyway
});
}
//try to use buildings that uncover map
std::vector<const CGObjectInstance *> objs;
for (auto obj : ai->visitableObjs)
{
if (!vstd::contains(ai->alreadyVisited, obj))
{
switch (obj->ID.num)
{
case Obj::REDWOOD_OBSERVATORY:
case Obj::PILLAR_OF_FIRE:
case Obj::CARTOGRAPHER:
objs.push_back (obj);
break;
case Obj::MONOLITH_ONE_WAY_ENTRANCE:
case Obj::MONOLITH_TWO_WAY:
case Obj::SUBTERRANEAN_GATE:
auto tObj = dynamic_cast<const CGTeleport *>(obj);
assert(ai->knownTeleportChannels.find(tObj->channel) != ai->knownTeleportChannels.end());
if(TeleportChannel::IMPASSABLE != ai->knownTeleportChannels[tObj->channel]->passability)
objs.push_back (obj);
break;
}
}
else
{
switch (obj->ID.num)
{
case Obj::MONOLITH_TWO_WAY:
case Obj::SUBTERRANEAN_GATE:
auto tObj = dynamic_cast<const CGTeleport *>(obj);
if(TeleportChannel::IMPASSABLE == ai->knownTeleportChannels[tObj->channel]->passability)
break;
for(auto exit : ai->knownTeleportChannels[tObj->channel]->exits)
{
if(!cb->getObj(exit))
{ // Always attempt to visit two-way teleports if one of channel exits is not visible
objs.push_back(obj);
break;
}
}
break;
}
}
}
for (auto h : heroes)
{
auto sm = ai->getCachedSectorMap(h);
for (auto obj : objs) //double loop, performance risk?
{
auto t = sm->firstTileToGet(h, obj->visitablePos()); //we assume that no more than one tile on the way is guarded
if (ai->isTileNotReserved(h, t))
ret.push_back (sptr(Goals::ClearWayTo(obj->visitablePos(), h).setisAbstract(true)));
}
int3 t = whereToExplore(h);
if (t.valid())
{
ret.push_back (sptr (Goals::VisitTile(t).sethero(h)));
}
else
{
ai->markHeroUnableToExplore (h); //there is no freely accessible tile, do not poll this hero anymore
//possible issues when gathering army to break
if (hero.h == h || (!hero && h == ai->primaryHero().h)) //check this only ONCE, high cost
{
t = ai->explorationDesperate(h);
if (t.valid()) //don't waste time if we are completely blocked
ret.push_back (sptr(Goals::ClearWayTo(t, h).setisAbstract(true)));
}
}
}
//we either don't have hero yet or none of heroes can explore
if ((!hero || ret.empty()) && ai->canRecruitAnyHero())
ret.push_back (sptr(Goals::RecruitHero()));
if (ret.empty())
{
throw goalFulfilledException (sptr(Goals::Explore().sethero(hero)));
}
//throw cannotFulfillGoalException("Cannot explore - no possible ways found!");
return ret;
}
TGoalVec GatherArmy::getAllPossibleSubgoals()
{
//get all possible towns, heroes and dwellings we may use
TGoalVec ret;
if(!hero.validAndSet())
{
return ret;
}
//TODO: include evaluation of monsters gather in calculation
for(auto t : cb->getTownsInfo())
{
auto waysToVisit = ai->ah->howToVisitObj(hero, t);
if(waysToVisit.size())
{
//grab army from town
if(!t->visitingHero && howManyReinforcementsCanGet(hero.get(), t))
{
if(!vstd::contains(ai->townVisitsThisWeek[hero], t))
vstd::concatenate(ret, waysToVisit);
}
//buy army in town
if (!t->visitingHero || t->visitingHero == hero.get(true))
{
std::vector<int> values = {
value,
(int)howManyReinforcementsCanBuy(t->getUpperArmy(), t),
(int)howManyReinforcementsCanBuy(hero.get(), t) };
int val = *std::min_element(values.begin(), values.end());
if (val)
{
auto goal = sptr(BuyArmy(t, val).sethero(hero));
if(!ai->ah->containsObjective(goal)) //avoid loops caused by reserving same objective twice
ret.push_back(goal);
else
logAi->debug("Can not buy army, because of ai->ah->containsObjective");
}
}
//build dwelling
//TODO: plan building over multiple turns?
//auto bid = ah->canBuildAnyStructure(t, std::vector<BuildingID>(unitsSource, unitsSource + ARRAY_COUNT(unitsSource)), 8 - cb->getDate(Date::DAY_OF_WEEK));
//Do not use below code for now, rely on generic Build. Code below needs to know a lot of town/resource context to do more good than harm
/*auto bid = ai->ah->canBuildAnyStructure(t, std::vector<BuildingID>(unitsSource, unitsSource + ARRAY_COUNT(unitsSource)), 1);
if (bid.is_initialized())
{
auto goal = sptr(BuildThis(bid.get(), t).setpriority(priority));
if (!ai->ah->containsObjective(goal)) //avoid loops caused by reserving same objective twice
ret.push_back(goal);
else
logAi->debug("Can not build a structure, because of ai->ah->containsObjective");
}*/
}
}
auto otherHeroes = cb->getHeroesInfo();
auto heroDummy = hero;
vstd::erase_if(otherHeroes, [heroDummy](const CGHeroInstance * h)
{
if(h == heroDummy.h)
return true;
else if(!ai->isAccessibleForHero(heroDummy->visitablePos(), h, true))
return true;
else if(!ai->canGetArmy(heroDummy.h, h)) //TODO: return actual aiValue
return true;
else if(ai->getGoal(h)->goalType == GATHER_ARMY)
return true;
else
return false;
});
for(auto h : otherHeroes)
{
// Go to the other hero if we are faster
if(!vstd::contains(ai->visitedHeroes[hero], h))
{
vstd::concatenate(ret, ai->ah->howToVisitObj(hero, h));
}
// Go to the other hero if we are faster
if(!vstd::contains(ai->visitedHeroes[h], hero))
{
vstd::concatenate(ret, ai->ah->howToVisitObj(h, hero.get()));
}
}
std::vector<const CGObjectInstance *> objs;
for(auto obj : ai->visitableObjs)
{
if(obj->ID == Obj::CREATURE_GENERATOR1)
{
auto relationToOwner = cb->getPlayerRelations(obj->getOwner(), ai->playerID);
//Use flagged dwellings only when there are available creatures that we can afford
if(relationToOwner == PlayerRelations::SAME_PLAYER)
{
auto dwelling = dynamic_cast<const CGDwelling *>(obj);
ui32 val = std::min<ui32>(value, howManyReinforcementsCanBuy(hero.get(), dwelling));
if(val)
{
for(auto & creLevel : dwelling->creatures)
{
if(creLevel.first)
{
for(auto & creatureID : creLevel.second)
{
auto creature = VLC->creh->creatures[creatureID];
if(ai->ah->freeResources().canAfford(creature->cost))
objs.push_back(obj); //TODO: reserve resources?
}
}
}
}
}
}
}
for(auto h : cb->getHeroesInfo())
{
for(auto obj : objs)
{
//find safe dwelling
if(ai->isGoodForVisit(obj, h))
{
vstd::concatenate(ret, ai->ah->howToVisitObj(h, obj));
}
}
}
if(ai->canRecruitAnyHero() && ai->ah->freeGold() > GameConstants::HERO_GOLD_COST) //this is not stupid in early phase of game
{
if(auto t = ai->findTownWithTavern())
{
for(auto h : cb->getAvailableHeroes(t)) //we assume that all towns have same set of heroes
{
if(h && h->getTotalStrength() > 500) //do not buy heroes with single creatures for GatherArmy
{
ret.push_back(sptr(RecruitHero()));
break;
}
}
}
}
if(ret.empty())
{
const bool allowGatherArmy = false;
if(hero == ai->primaryHero())
ret.push_back(sptr(Explore(allowGatherArmy)));
else
throw cannotFulfillGoalException("No ways to gather army");
}
return ret;
}