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/*
* Summon.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 "Summon.h"
#include "Registry.h"
#include "../ISpellMechanics.h"
#include "../../battle/CBattleInfoCallback.h"
#include "../../battle/Unit.h"
#include "../../NetPacks.h"
#include "../../serializer/JsonSerializeFormat.h"
#include "../../CCreatureHandler.h"
#include "../../CHeroHandler.h"
#include "../../mapObjects/CGHeroInstance.h"
static const std::string EFFECT_NAME = "core:summon";
namespace spells
{
namespace effects
{
VCMI_REGISTER_SPELL_EFFECT(Summon, EFFECT_NAME);
Summon::Summon()
: Effect(),
creature(),
permanent(false),
exclusive(true),
summonByHealth(false),
summonSameUnit(false)
{
}
Summon::~Summon() = default;
void Summon::adjustAffectedHexes(std::set<BattleHex> & hexes, const Mechanics * m, const Target & spellTarget) const
{
//no hexes affected
}
void Summon::adjustTargetTypes(std::vector<TargetType> & types) const
{
//any target type allowed
}
bool Summon::applicable(Problem & problem, const Mechanics * m) const
{
if(exclusive)
{
//check if there are summoned creatures of other type
auto otherSummoned = m->cb->battleGetUnitsIf([m, this](const battle::Unit * unit)
{
return (unit->unitOwner() == m->getCasterColor())
&& (unit->unitSlot() == SlotID::SUMMONED_SLOT_PLACEHOLDER)
&& (!unit->isClone())
&& (unit->creatureId() != creature);
});
if(!otherSummoned.empty())
{
auto elemental = otherSummoned.front();
MetaString text;
text.addTxt(MetaString::GENERAL_TXT, 538);
auto caster = dynamic_cast<const CGHeroInstance *>(m->caster);
if(caster)
{
text.addReplacement(caster->name);
text.addReplacement(MetaString::CRE_PL_NAMES, elemental->creatureIndex());
if(caster->type->sex)
text.addReplacement(MetaString::GENERAL_TXT, 540);
else
text.addReplacement(MetaString::GENERAL_TXT, 539);
}
problem.add(std::move(text), Problem::NORMAL);
return false;
}
}
return true;
}
void Summon::apply(BattleStateProxy * battleState, RNG & rng, const Mechanics * m, const EffectTarget & target) const
{
//new feature - percentage bonus
auto valueWithBonus = m->applySpecificSpellBonus(m->calculateRawEffectValue(0, m->getEffectPower()));//TODO: consider use base power too
BattleUnitsChanged pack;
for(auto & dest : target)
{
if(dest.unitValue)
{
const battle::Unit * summoned = dest.unitValue;
std::shared_ptr<battle::Unit> state = summoned->acquire();
int64_t healthValue = (summonByHealth ? valueWithBonus : (valueWithBonus * summoned->MaxHealth()));
state->heal(healthValue, EHealLevel::OVERHEAL, (permanent ? EHealPower::PERMANENT : EHealPower::ONE_BATTLE));
pack.changedStacks.emplace_back(summoned->unitId(), UnitChanges::EOperation::RESET_STATE);
state->save(pack.changedStacks.back().data);
}
else
{
int32_t amount = 0;
if(summonByHealth)
{
auto creatureType = creature.toCreature();
auto creatureMaxHealth = creatureType->MaxHealth();
amount = valueWithBonus / creatureMaxHealth;
}
else
{
amount = static_cast<int32_t>(valueWithBonus);
}
if(amount < 1)
{
battleState->complain("Summoning didn't summon any!");
continue;
}
battle::UnitInfo info;
info.id = m->cb->battleNextUnitId();
info.count = amount;
info.type = creature;
info.side = m->casterSide;
info.position = dest.hexValue;
info.summoned = !permanent;
pack.changedStacks.emplace_back(info.id, UnitChanges::EOperation::ADD);
info.save(pack.changedStacks.back().data);
}
}
if(!pack.changedStacks.empty())
battleState->apply(&pack);
}
EffectTarget Summon::filterTarget(const Mechanics * m, const EffectTarget & target) const
{
return target;
}
void Summon::serializeJsonEffect(JsonSerializeFormat & handler)
{
handler.serializeId("id", creature, CreatureID());
handler.serializeBool("permanent", permanent, false);
handler.serializeBool("exclusive", exclusive, true);
handler.serializeBool("summonByHealth", summonByHealth, false);
handler.serializeBool("summonSameUnit", summonSameUnit, false);
}
EffectTarget Summon::transformTarget(const Mechanics * m, const Target & aimPoint, const Target & spellTarget) const
{
auto sameSummoned = m->cb->battleGetUnitsIf([m, this](const battle::Unit * unit)
{
return (unit->unitOwner() == m->getCasterColor())
&& (unit->unitSlot() == SlotID::SUMMONED_SLOT_PLACEHOLDER)
&& (!unit->isClone())
&& (unit->creatureId() == creature)
&& (unit->alive());
});
EffectTarget effectTarget;
if(sameSummoned.empty() || !summonSameUnit)
{
BattleHex hex = m->cb->getAvaliableHex(creature, m->casterSide);
if(!hex.isValid())
logGlobal->error("No free space to summon creature!");
else
effectTarget.emplace_back(hex);
}
else
{
effectTarget.emplace_back(sameSummoned.front());
}
return effectTarget;
}
}
}
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