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140 lines
3.8 KiB
C++
140 lines
3.8 KiB
C++
/*
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* DemonSummon.cpp, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#include "StdInc.h"
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#include "DemonSummon.h"
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#include "Registry.h"
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#include "../ISpellMechanics.h"
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#include "../../battle/CBattleInfoCallback.h"
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#include "../../battle/BattleInfo.h"
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#include "../../battle/CUnitState.h"
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#include "../../networkPacks/PacksForClientBattle.h"
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#include "../../serializer/JsonSerializeFormat.h"
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VCMI_LIB_NAMESPACE_BEGIN
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namespace spells
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{
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namespace effects
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{
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int DemonSummon::raisedCreatureAmount(const Mechanics * m, const battle::Unit * unit) const
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{
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if(!unit || unit->alive() || unit->isGhost())
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return 0;
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const auto *creatureType = creature.toEntity(m->creatures());
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int32_t deadCount = unit->unitBaseAmount();
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int32_t deadTotalHealth = unit->getTotalHealth();
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int32_t raisedMaxHealth = creatureType->getMaxHealth();
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int32_t raisedTotalHealth = m->applySpellBonus(m->getEffectValue(), unit);
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// Can't raise stack with more HP than original stack
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int32_t maxAmountFromHealth = deadTotalHealth / raisedMaxHealth;
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// Can't raise stack with more creatures than original stack
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int32_t maxAmountFromAmount = deadCount;
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// Can't raise stack with more HP than our spellpower
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int32_t maxAmountFromSpellpower = raisedTotalHealth / raisedMaxHealth;
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int32_t finalAmount = std::min( { maxAmountFromHealth, maxAmountFromAmount, maxAmountFromSpellpower } );
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return finalAmount;
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}
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void DemonSummon::apply(ServerCallback * server, const Mechanics * m, const EffectTarget & target) const
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{
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BattleUnitsChanged pack;
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pack.battleID = m->battle()->getBattle()->getBattleID();
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for(const Destination & dest : target)
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{
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const battle::Unit * targetStack = dest.unitValue;
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//we shall have all targets to be stacks
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if(!targetStack || targetStack->alive() || targetStack->isGhost())
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{
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server->complain("No corpse to demonize! Invalid effect target transformation.");
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continue;
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}
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auto hex = m->battle()->getAvailableHex(targetStack->creatureId(), m->casterSide, targetStack->getPosition());
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if(!hex.isValid())
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{
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server->complain("No place to put new summon!");
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break;
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}
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int32_t finalAmount = raisedCreatureAmount(m, targetStack);
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if(finalAmount < 1)
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{
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server->complain("Summoning didn't summon any!");
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continue;
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}
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battle::UnitInfo info;
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info.id = m->battle()->battleNextUnitId();
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info.count = finalAmount;
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info.type = creature;
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info.side = m->casterSide;
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info.position = dest.hexValue;
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info.summoned = !permanent;
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// add newly created creature
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pack.changedStacks.emplace_back(info.id, UnitChanges::EOperation::ADD);
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info.save(pack.changedStacks.back().data);
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// and remove corpse to prevent second raising or resurrection
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pack.changedStacks.emplace_back(targetStack->unitId(), UnitChanges::EOperation::REMOVE);
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}
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if(!pack.changedStacks.empty())
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server->apply(&pack);
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}
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bool DemonSummon::isValidTarget(const Mechanics * m, const battle::Unit * unit) const
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{
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if(!unit->isDead())
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return false;
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//check if alive unit blocks rising
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for(const BattleHex & hex : battle::Unit::getHexes(unit->getPosition(), unit->doubleWide(), unit->unitSide()))
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{
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auto blocking = m->battle()->battleGetUnitsIf([hex, unit](const battle::Unit * other)
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{
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return other->isValidTarget(false) && other->coversPos(hex) && other != unit;
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});
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if(!blocking.empty())
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return false;
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}
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if (unit->isGhost())
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return false;
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if (raisedCreatureAmount(m, unit) == 0)
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return false;
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return m->isReceptive(unit);
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}
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void DemonSummon::serializeJsonUnitEffect(JsonSerializeFormat & handler)
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{
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handler.serializeId("id", creature, CreatureID());
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handler.serializeBool("permanent", permanent, false);
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}
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}
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}
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VCMI_LIB_NAMESPACE_END
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