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vcmi/lib/spells/effects/Dispel.cpp
AlexVinS ecaa9f5d0b Entities redesign and a few ERM features
* Made most Handlers derived from CHandlerBase and moved service API there.
* Declared existing Entity APIs.
* Added basic script context caching
* Started Lua script module
* Started Lua spell effect API
* Started script state persistence
* Started battle info callback binding
* CommitPackage removed
* Extracted spells::Caster to own header; Expanded Spell API.
* implemented !!MC:S, !!FU:E, !!FU:P, !!MA, !!VR:H, !!VR:C
* !!BU:C, !!BU:E, !!BU:G, !!BU:M implemented
* Allow use of "MC:S@varName@" to declare normal variable (technically v-variable with string key)
* Re-enabled VERM macros.
* !?GM0 added
* !?TM implemented
* Added !!MF:N
* Started !?OB, !!BM, !!HE, !!OW, !!UN
* Added basic support of w-variables
* Added support for ERM indirect variables
* Made !?FU regular trigger
* !!re (ERA loop receiver) implemented
* Fixed ERM receivers with zero args.
2021-02-14 19:05:43 +03:00

145 lines
3.2 KiB
C++

/*
* Dispel.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 "Dispel.h"
#include "Registry.h"
#include <vcmi/spells/Spell.h>
#include "../ISpellMechanics.h"
#include "../../NetPacks.h"
#include "../../battle/IBattleState.h"
#include "../../battle/Unit.h"
#include "../../serializer/JsonSerializeFormat.h"
static const std::string EFFECT_NAME = "core:dispel";
namespace spells
{
namespace effects
{
VCMI_REGISTER_SPELL_EFFECT(Dispel, EFFECT_NAME);
Dispel::Dispel()
: UnitEffect()
{
}
Dispel::~Dispel() = default;
void Dispel::apply(ServerCallback * server, const Mechanics * m, const EffectTarget & target) const
{
const bool describe = server->describeChanges();
SetStackEffect sse;
BattleLogMessage blm;
for(auto & t : target)
{
const battle::Unit * unit = t.unitValue;
if(unit)
{
//special case for DISPEL_HELPFUL_SPELLS
if(describe && positive && !negative && !neutral)
{
MetaString line;
unit->addText(line, MetaString::GENERAL_TXT, -555, true);
unit->addNameReplacement(line, true);
blm.lines.push_back(std::move(line));
}
std::vector<Bonus> buffer;
auto bl = getBonuses(m, unit);
for(auto item : *bl)
buffer.emplace_back(*item);
if(!buffer.empty())
sse.toRemove.push_back(std::make_pair(unit->unitId(), buffer));
}
}
if(!sse.toRemove.empty())
server->apply(&sse);
if(describe && !blm.lines.empty())
server->apply(&blm);
}
bool Dispel::isValidTarget(const Mechanics * m, const battle::Unit * unit) const
{
if(getBonuses(m, unit)->empty())
return false;
return UnitEffect::isValidTarget(m, unit);
}
void Dispel::serializeJsonUnitEffect(JsonSerializeFormat & handler)
{
handler.serializeBool("dispelPositive", positive);
handler.serializeBool("dispelNegative", negative);
handler.serializeBool("dispelNeutral", neutral);
}
std::shared_ptr<const BonusList> Dispel::getBonuses(const Mechanics * m, const battle::Unit * unit) const
{
auto sel = [=](const Bonus * bonus)
{
if(bonus->source == Bonus::SPELL_EFFECT)
{
const Spell * sourceSpell = SpellID(bonus->sid).toSpell(m->spells());
if(!sourceSpell)
return false;//error
//Special case: DISRUPTING_RAY and ACID_BREATH_DEFENSE are "immune" to dispell
//Other even PERMANENT effects can be removed (f.e. BIND)
if(sourceSpell->getIndex() == SpellID::DISRUPTING_RAY || sourceSpell->getIndex() == SpellID::ACID_BREATH_DEFENSE)
return false;
//Special case: do not remove lifetime marker
if(sourceSpell->getIndex() == SpellID::CLONE)
return false;
//stack may have inherited effects
if(sourceSpell->isAdventure())
return false;
if(sourceSpell->getIndex() == m->getSpellIndex())
return false;
auto positiveness = sourceSpell->getPositiveness();
if(boost::logic::indeterminate(positiveness))
{
if(neutral)
return true;
}
else if(positiveness)
{
if(positive)
return true;
}
else
{
if(negative)
return true;
}
}
return false;
};
CSelector selector(sel);
return unit->getBonuses(selector);
}
}
}