/**
* Calculates what creatures and how many to be raised from a battle.
* @param battleResult The results of the battle.
* @return Returns a pair with the first value indicating the ID of the creature
* type and second value the amount. Both values are returned as -1 if necromancy
* could not be applied.
*/
CStackBasicDescriptor CGHeroInstance::calculateNecromancy (const BattleResult &battleResult) const
{
const ui8 necromancyLevel = getSecSkillLevel(SecondarySkill::NECROMANCY);
// Hero knows necromancy or has Necromancer Cloak
if (necromancyLevel > 0 || hasBonusOfType(Bonus::IMPROVED_NECROMANCY))
{
double necromancySkill = valOfBonuses(Bonus::SECONDARY_SKILL_PREMY, SecondarySkill::NECROMANCY)/100.0;
vstd::amin(necromancySkill, 1.0); //it's impossible to raise more creatures than all...
const std::map<ui32,si32> &casualties = battleResult.casualties[!battleResult.winner];
ui32 raisedUnits = 0;
// Figure out what to raise and how many.
const CreatureID creatureTypes[] = {CreatureID::SKELETON, CreatureID::WALKING_DEAD, CreatureID::WIGHTS, CreatureID::LICHES};
const bool improvedNecromancy = hasBonusOfType(Bonus::IMPROVED_NECROMANCY);
const CCreature *raisedUnitType = VLC->creh->creatures[creatureTypes[improvedNecromancy ? necromancyLevel : 0]];
const ui32 raisedUnitHP = raisedUnitType->valOfBonuses(Bonus::STACK_HEALTH);
//calculate creatures raised from each defeated stack
for (auto & casualtie : casualties)
{
// Get lost enemy hit points convertible to units.
CCreature * c = VLC->creh->creatures[casualtie.first];
const ui32 raisedHP = c->valOfBonuses(Bonus::STACK_HEALTH) * casualtie.second * necromancySkill;
raisedUnits += std::min<ui32>(raisedHP / raisedUnitHP, casualtie.second * necromancySkill); //limit to % of HP and % of original stack count
}
// Make room for new units.
SlotID slot = getSlotFor(raisedUnitType->idNumber);
if (slot == SlotID())
{
// If there's no room for unit, try it's upgraded version 2/3rds the size.
raisedUnitType = VLC->creh->creatures[*raisedUnitType->upgrades.begin()];
raisedUnits = (raisedUnits*2)/3;
slot = getSlotFor(raisedUnitType->idNumber);
}
if (raisedUnits <= 0)
raisedUnits = 1;
return CStackBasicDescriptor(raisedUnitType->idNumber, raisedUnits);
}
return CStackBasicDescriptor();
}
bool CSimpleArmy::setCreature(SlotID slot, CreatureID cre, TQuantity count)
{
assert(!vstd::contains(army, slot));
army[slot] = CStackBasicDescriptor(cre, count);
return true;
}
