bool VisitHero::fulfillsMe (TSubgoal goal)
{
if (goal->goalType == Goals::VISIT_TILE && cb->getObj(ObjectInstanceID(objid))->visitablePos() == goal->tile)
return true;
else
return false;
}
const CGHeroInstance * HeroPtr::get(bool doWeExpectNull /*= false*/) const
{
//TODO? check if these all assertions every time we get info about hero affect efficiency
//
//behave terribly when attempting unauthorized access to hero that is not ours (or was lost)
assert(doWeExpectNull || h);
if(h)
{
auto obj = cb->getObj(hid);
const bool owned = obj && obj->tempOwner == ai->playerID;
if(doWeExpectNull && !owned)
{
return nullptr;
}
else
{
assert(obj);
assert(owned);
}
}
return h;
}
bool GetObj::fulfillsMe (TSubgoal goal)
{
if (goal->goalType == Goals::VISIT_TILE)
{
auto obj = cb->getObj(ObjectInstanceID(objid));
if (obj && obj->visitablePos() == goal->tile) //object could be removed
return true;
}
return false;
}
bool VisitHero::fulfillsMe (TSubgoal goal)
{
if (goal->goalType != Goals::VISIT_TILE)
{
return false;
}
auto obj = cb->getObj(ObjectInstanceID(objid));
if (!obj)
{
logAi->error("Hero %s: VisitHero::fulfillsMe at %s: object %d not found", hero.name, goal->tile, objid);
return false;
}
return obj->visitablePos() == goal->tile;
}
void SectorMap::exploreNewSector(crint3 pos, int num, CCallback * cbp)
{
Sector & s = infoOnSectors[num];
s.id = num;
s.water = getTile(pos)->isWater();
std::queue<int3> toVisit;
toVisit.push(pos);
while (!toVisit.empty())
{
int3 curPos = toVisit.front();
toVisit.pop();
TSectorID & sec = retrieveTile(curPos);
if (sec == NOT_CHECKED)
{
const TerrainTile * t = getTile(curPos);
if (!markIfBlocked(sec, curPos, t))
{
if (t->isWater() == s.water) //sector is only-water or only-land
{
sec = num;
s.tiles.push_back(curPos);
foreach_neighbour(cbp, curPos, [&](CCallback * cbp, crint3 neighPos)
{
if (retrieveTile(neighPos) == NOT_CHECKED)
{
toVisit.push(neighPos);
//parent[neighPos] = curPos;
}
const TerrainTile * nt = getTile(neighPos);
if (nt && nt->isWater() != s.water && canBeEmbarkmentPoint(nt, s.water))
{
s.embarkmentPoints.push_back(neighPos);
}
});
if (t->visitable)
{
auto obj = t->visitableObjects.front();
if (cb->getObj(obj->id, false)) // FIXME: we have to filter invisible objcts like events, but probably TerrainTile shouldn't be used in SectorMap at all
s.visitableObjs.push_back(obj);
}
}
}
}
}
vstd::removeDuplicates(s.embarkmentPoints);
}
TSubgoal GetObj::whatToDoToAchieve()
{
const CGObjectInstance * obj = cb->getObj(ObjectInstanceID(objid));
if(!obj)
return sptr (Goals::Explore());
int3 pos = obj->visitablePos();
if (hero)
{
if (ai->isAccessibleForHero(pos, hero))
return sptr (Goals::VisitTile(pos).sethero(hero));
}
else
{
if (isReachable(obj))
return sptr (Goals::VisitTile(pos).sethero(hero)); //we must visit object with same hero, if any
}
return sptr (Goals::ClearWayTo(pos).sethero(hero));
}
TSubgoal VisitHero::whatToDoToAchieve()
{
const CGObjectInstance * obj = cb->getObj(ObjectInstanceID(objid));
if(!obj)
return sptr (Goals::Explore());
int3 pos = obj->visitablePos();
if (hero && ai->isAccessibleForHero(pos, hero, true) && isSafeToVisit(hero, pos)) //enemy heroes can get reinforcements
{
if (hero->pos == pos)
logAi->errorStream() << "Hero " << hero.name << " tries to visit himself.";
else
{
//can't use VISIT_TILE here as tile appears blocked by target hero
//FIXME: elementar goal should not be abstract
return sptr (Goals::VisitHero(objid).sethero(hero).settile(pos).setisElementar(true));
}
}
return sptr (Goals::Invalid());
}
TSubgoal GetObj::whatToDoToAchieve()
{
const CGObjectInstance * obj = cb->getObj(ObjectInstanceID(objid));
if(!obj)
return sptr (Goals::Explore());
if (obj->tempOwner == ai->playerID) //we can't capture our own object -> move to Win codition
throw cannotFulfillGoalException("Cannot capture my own object " + obj->getObjectName());
int3 pos = obj->visitablePos();
if (hero)
{
if (ai->isAccessibleForHero(pos, hero))
return sptr (Goals::VisitTile(pos).sethero(hero));
}
else
{
for (auto h : cb->getHeroesInfo())
{
if (ai->isAccessibleForHero(pos, h))
return sptr(Goals::VisitTile(pos).sethero(h)); //we must visit object with same hero, if any
}
}
return sptr (Goals::ClearWayTo(pos).sethero(hero));
}
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;
}
TSubgoal Win::whatToDoToAchieve()
{
auto toBool = [=](const EventCondition &)
{
// TODO: proper implementation
// Right now even already fulfilled goals will be included into generated list
// Proper check should test if event condition is already fulfilled
// Easiest way to do this is to call CGameState::checkForVictory but this function should not be
// used on client side or in AI code
return false;
};
std::vector<EventCondition> goals;
for (const TriggeredEvent & event : cb->getMapHeader()->triggeredEvents)
{
//TODO: try to eliminate human player(s) using loss conditions that have isHuman element
if (event.effect.type == EventEffect::VICTORY)
{
boost::range::copy(event.trigger.getFulfillmentCandidates(toBool), std::back_inserter(goals));
}
}
//TODO: instead of returning first encountered goal AI should generate list of possible subgoals
for (const EventCondition & goal : goals)
{
switch(goal.condition)
{
case EventCondition::HAVE_ARTIFACT:
return sptr (Goals::GetArtOfType(goal.objectType));
case EventCondition::DESTROY:
{
if (goal.object)
{
auto obj = cb->getObj (goal.object->id);
if (obj)
if (obj->getOwner() == ai->playerID) //we can't capture our own object
return sptr(Goals::Conquer());
return sptr (Goals::GetObj(goal.object->id.getNum()));
}
else
{
// TODO: destroy all objects of type goal.objectType
// This situation represents "kill all creatures" condition from H3
break;
}
}
case EventCondition::HAVE_BUILDING:
{
// TODO build other buildings apart from Grail
// goal.objectType = buidingID to build
// goal.object = optional, town in which building should be built
// Represents "Improve town" condition from H3 (but unlike H3 it consists from 2 separate conditions)
if (goal.objectType == BuildingID::GRAIL)
{
if(auto h = ai->getHeroWithGrail())
{
//hero is in a town that can host Grail
if(h->visitedTown && !vstd::contains(h->visitedTown->forbiddenBuildings, BuildingID::GRAIL))
{
const CGTownInstance *t = h->visitedTown;
return sptr (Goals::BuildThis(BuildingID::GRAIL, t));
}
else
{
auto towns = cb->getTownsInfo();
towns.erase(boost::remove_if(towns,
[](const CGTownInstance *t) -> bool
{
return vstd::contains(t->forbiddenBuildings, BuildingID::GRAIL);
}),
towns.end());
boost::sort(towns, CDistanceSorter(h.get()));
if(towns.size())
{
return sptr (Goals::VisitTile(towns.front()->visitablePos()).sethero(h));
}
}
}
double ratio = 0;
// maybe make this check a bit more complex? For example:
// 0.75 -> dig randomly within 3 tiles radius
// 0.85 -> radius now 2 tiles
// 0.95 -> 1 tile radius, position is fully known
// AFAIK H3 AI does something like this
int3 grailPos = cb->getGrailPos(&ratio);
if(ratio > 0.99)
{
return sptr (Goals::DigAtTile(grailPos));
} //TODO: use FIND_OBJ
else if(const CGObjectInstance * obj = ai->getUnvisitedObj(objWithID<Obj::OBELISK>)) //there are unvisited Obelisks
return sptr (Goals::GetObj(obj->id.getNum()));
else
return sptr (Goals::Explore());
}
break;
}
case EventCondition::CONTROL:
{
if (goal.object)
{
return sptr (Goals::GetObj(goal.object->id.getNum()));
}
else
{
//TODO: control all objects of type "goal.objectType"
// Represents H3 condition "Flag all mines"
break;
}
}
case EventCondition::HAVE_RESOURCES:
//TODO mines? piles? marketplace?
//save?
return sptr (Goals::CollectRes(static_cast<Res::ERes>(goal.objectType), goal.value));
case EventCondition::HAVE_CREATURES:
return sptr (Goals::GatherTroops(goal.objectType, goal.value));
case EventCondition::TRANSPORT:
{
//TODO. merge with bring Grail to town? So AI will first dig grail, then transport it using this goal and builds it
// Represents "transport artifact" condition:
// goal.objectType = type of artifact
// goal.object = destination-town where artifact should be transported
break;
}
case EventCondition::STANDARD_WIN:
return sptr (Goals::Conquer());
// Conditions that likely don't need any implementation
case EventCondition::DAYS_PASSED:
break; // goal.value = number of days for condition to trigger
case EventCondition::DAYS_WITHOUT_TOWN:
break; // goal.value = number of days to trigger this
case EventCondition::IS_HUMAN:
break; // Should be only used in calculation of candidates (see toBool lambda)
case EventCondition::CONST_VALUE:
break;
default:
assert(0);
}
}
return sptr (Goals::Invalid());
}
ObjectIdRef::operator const CGObjectInstance*() const
{
return cb->getObj(id, false);
}