ui64 evaluateDanger(crint3 tile, const CGHeroInstance *visitor)
{
const TerrainTile *t = cb->getTile(tile, false);
if(!t) //we can know about guard but can't check its tile (the edge of fow)
return 190000000; //MUCH
ui64 objectDanger = 0, guardDanger = 0;
auto visitableObjects = cb->getVisitableObjs(tile);
// in some scenarios hero happens to be "under" the object (eg town). Then we consider ONLY the hero.
if(vstd::contains_if(visitableObjects, objWithID<Obj::HERO>))
vstd::erase_if(visitableObjects, [](const CGObjectInstance * obj)
{
return !objWithID<Obj::HERO>(obj);
});
if(const CGObjectInstance * dangerousObject = vstd::backOrNull(visitableObjects))
{
objectDanger = evaluateDanger(dangerousObject); //unguarded objects can also be dangerous or unhandled
if (objectDanger)
{
//TODO: don't downcast objects AI shouldn't know about!
auto armedObj = dynamic_cast<const CArmedInstance*>(dangerousObject);
if (armedObj)
{
float tacticalAdvantage = fh->getTacticalAdvantage(visitor, armedObj);
objectDanger *= tacticalAdvantage; //this line tends to go infinite for allied towns (?)
}
}
if (dangerousObject->ID == Obj::SUBTERRANEAN_GATE)
{ //check guard on the other side of the gate
auto it = ai->knownSubterraneanGates.find(dangerousObject);
if (it != ai->knownSubterraneanGates.end())
{
auto guards = cb->getGuardingCreatures(it->second->visitablePos());
for (auto cre : guards)
{
vstd::amax (guardDanger, evaluateDanger(cre) *
fh->getTacticalAdvantage(visitor, dynamic_cast<const CArmedInstance*>(cre)));
}
}
}
}
auto guards = cb->getGuardingCreatures(tile);
for (auto cre : guards)
{
vstd::amax (guardDanger, evaluateDanger(cre) * fh->getTacticalAdvantage(visitor, dynamic_cast<const CArmedInstance*>(cre))); //we are interested in strongest monster around
}
//TODO mozna odwiedzic blockvis nie ruszajac straznika
return std::max(objectDanger, guardDanger);
}
ui64 evaluateDanger(crint3 tile)
{
const TerrainTile *t = cb->getTile(tile, false);
if(!t) //we can know about guard but can't check its tile (the edge of fow)
return 190000000; //MUCH
ui64 objectDanger = 0, guardDanger = 0;
auto visObjs = cb->getVisitableObjs(tile);
if(visObjs.size())
objectDanger = evaluateDanger(visObjs.back());
int3 guardPos = cb->guardingCreaturePosition(tile);
if(guardPos.x >= 0 && guardPos != tile)
guardDanger = evaluateDanger(guardPos);
//TODO mozna odwiedzic blockvis nie ruszajac straznika
return std::max(objectDanger, guardDanger);
}
bool isSafeToVisit(HeroPtr h, crint3 tile)
{
const ui64 heroStrength = h->getTotalStrength(),
dangerStrength = evaluateDanger(tile, *h);
if(dangerStrength)
{
if(heroStrength / SAFE_ATTACK_CONSTANT > dangerStrength)
{
logAi->debugStream() << boost::format("It's, safe for %s to visit tile %s") % h->name % tile;
return true;
}
else
return false;
}
return true; //there's no danger
}
bool compareDanger(const CGObjectInstance *lhs, const CGObjectInstance *rhs)
{
return evaluateDanger(lhs) < evaluateDanger(rhs);
}