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/*
* Damage.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 "Damage.h"
#include "Registry.h"
#include "../ISpellMechanics.h"
#include "../../NetPacks.h"
#include "../../CStack.h"
#include "../../battle/IBattleState.h"
#include "../../battle/CBattleInfoCallback.h"
#include "../../CGeneralTextHandler.h"
#include "../../serializer/JsonSerializeFormat.h"
static const std::string EFFECT_NAME = "core:damage";
namespace spells
{
namespace effects
{
VCMI_REGISTER_SPELL_EFFECT(Damage, EFFECT_NAME);
Damage::Damage()
: UnitEffect(),
customEffectId(-1),
killByPercentage(false),
killByCount(false)
{
}
Damage::~Damage() = default;
void Damage::apply(BattleStateProxy * battleState, RNG & rng, const Mechanics * m, const EffectTarget & target) const
{
StacksInjured stacksInjured;
prepareEffects(stacksInjured, rng, m, target, battleState->describe);
if(!stacksInjured.stacks.empty())
battleState->apply(&stacksInjured);
}
bool Damage::isReceptive(const Mechanics * m, const battle::Unit * unit) const
{
if(!UnitEffect::isReceptive(m, unit))
return false;
//elemental immunity for damage
auto filter = m->getElementalImmunity();
for(auto element : filter)
{
if(!m->isPositiveSpell() && unit->hasBonusOfType(element, 2))
return false;
}
return true;
}
void Damage::serializeJsonUnitEffect(JsonSerializeFormat & handler)
{
handler.serializeInt("customEffectId", customEffectId, -1);
handler.serializeBool("killByPercentage", killByPercentage);
handler.serializeBool("killByCount", killByCount);
}
int64_t Damage::damageForTarget(size_t targetIndex, const Mechanics * m, const battle::Unit * target) const
{
int64_t baseDamage;
if(killByPercentage)
{
int64_t amountToKill = target->getCount() * m->getEffectValue() / 100;
baseDamage = amountToKill * target->MaxHealth();
}
else if(killByCount)
{
baseDamage = m->getEffectValue() * target->MaxHealth();
}
else
{
baseDamage = m->adjustEffectValue(target);
}
if(chainLength > 1 && targetIndex > 0)
{
double indexedFactor = std::pow(chainFactor, (double) targetIndex);
return (int64_t) (indexedFactor * baseDamage);
}
return baseDamage;
}
void Damage::describeEffect(std::vector<MetaString> & log, const Mechanics * m, const battle::Unit * firstTarget, uint32_t kills, int64_t damage, bool multiple) const
{
if(m->getSpellIndex() == SpellID::DEATH_STARE && !multiple)
{
MetaString line;
if(kills > 1)
{
line.addTxt(MetaString::GENERAL_TXT, 119); //%d %s die under the terrible gaze of the %s.
line.addReplacement(kills);
firstTarget->addNameReplacement(line, true);
}
else
{
line.addTxt(MetaString::GENERAL_TXT, 118); //One %s dies under the terrible gaze of the %s.
firstTarget->addNameReplacement(line, false);
}
m->caster->getCasterName(line);
log.push_back(line);
}
else if(m->getSpellIndex() == SpellID::THUNDERBOLT && !multiple)
{
{
MetaString line;
firstTarget->addText(line, MetaString::GENERAL_TXT, -367, true);
firstTarget->addNameReplacement(line, true);
log.push_back(line);
}
{
MetaString line;
//todo: handle newlines in metastring
std::string text = VLC->generaltexth->allTexts.at(343); //Does %d points of damage.
boost::algorithm::trim(text);
line << text;
line.addReplacement(damage); //no more text afterwards
log.push_back(line);
}
}
else
{
{
MetaString line;
line.addTxt(MetaString::GENERAL_TXT, 376);
line.addReplacement(MetaString::SPELL_NAME, m->getSpellIndex());
line.addReplacement(damage);
log.push_back(line);
}
{
MetaString line;
const int textId = (kills > 1) ? 379 : 378;
line.addTxt(MetaString::GENERAL_TXT, textId);
if(kills > 1)
line.addReplacement(kills);
if(kills > 1)
{
if(multiple)
line.addReplacement(MetaString::GENERAL_TXT, 43);
else
firstTarget->addNameReplacement(line, true);
}
else
{
if(multiple)
line.addReplacement(MetaString::GENERAL_TXT, 42);
else
firstTarget->addNameReplacement(line, false);
}
log.push_back(line);
}
}
}
void Damage::prepareEffects(StacksInjured & stacksInjured, RNG & rng, const Mechanics * m, const EffectTarget & target, bool describe) const
{
size_t targetIndex = 0;
const battle::Unit * firstTarget = nullptr;
int64_t damageToDisplay = 0;
uint32_t killed = 0;
bool multiple = false;
for(auto & t : target)
{
const battle::Unit * unit = t.unitValue;
if(unit && unit->alive())
{
BattleStackAttacked bsa;
bsa.damageAmount = damageForTarget(targetIndex, m, unit);
bsa.stackAttacked = unit->unitId();
bsa.attackerID = -1;
auto newState = unit->acquireState();
CStack::prepareAttacked(bsa, rng, newState);
if(describe)
{
if(!firstTarget)
firstTarget = unit;
else
multiple = true;
damageToDisplay += bsa.damageAmount;
killed += bsa.killedAmount;
}
if(customEffectId >= 0)
{
bsa.effect = 82;
bsa.flags |= BattleStackAttacked::EFFECT;
}
stacksInjured.stacks.push_back(bsa);
}
targetIndex++;
}
if(describe && firstTarget && damageToDisplay > 0)
describeEffect(stacksInjured.battleLog, m, firstTarget, killed, damageToDisplay, multiple);
}
}
}
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