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75 lines
2.8 KiB
C++
75 lines
2.8 KiB
C++
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#include <components/debug/debuglog.hpp>
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#include <components/esm3/loadlevlist.hpp>
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#include "../mwworld/class.hpp"
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#include "../mwworld/esmstore.hpp"
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#include "../mwworld/manualref.hpp"
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#include "../mwworld/ptr.hpp"
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#include "../mwbase/environment.hpp"
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#include "../mwbase/world.hpp"
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#include "actorutil.hpp"
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#include "creaturestats.hpp"
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#include "levelledlist.hpp"
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namespace MWMechanics
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{
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const ESM::RefId& getLevelledItem(const ESM::LevelledListBase* levItem, bool creature, Misc::Rng::Generator& prng)
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{
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const std::vector<ESM::LevelledListBase::LevelItem>& items = levItem->mList;
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const MWWorld::Ptr& player = getPlayer();
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int playerLevel = player.getClass().getCreatureStats(player).getLevel();
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if (Misc::Rng::roll0to99(prng) < levItem->mChanceNone)
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return ESM::RefId::sEmpty;
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std::vector<const ESM::RefId*> candidates;
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int highestLevel = 0;
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for (const auto& levelledItem : items)
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{
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if (levelledItem.mLevel > highestLevel && levelledItem.mLevel <= playerLevel)
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highestLevel = levelledItem.mLevel;
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}
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// For levelled creatures, the flags are swapped. This file format just makes so much sense.
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bool allLevels = (levItem->mFlags & ESM::ItemLevList::AllLevels) != 0;
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if (creature)
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allLevels = levItem->mFlags & ESM::CreatureLevList::AllLevels;
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for (const auto& levelledItem : items)
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{
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if (playerLevel >= levelledItem.mLevel && (allLevels || levelledItem.mLevel == highestLevel))
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candidates.push_back(&levelledItem.mId);
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}
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if (candidates.empty())
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return ESM::RefId::sEmpty;
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const ESM::RefId& item = *candidates[Misc::Rng::rollDice(candidates.size(), prng)];
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// Vanilla doesn't fail on nonexistent items in levelled lists
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if (!MWBase::Environment::get().getWorld()->getStore().find(item))
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{
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Log(Debug::Warning) << "Warning: ignoring nonexistent item " << item << " in levelled list "
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<< levItem->mId;
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return ESM::RefId::sEmpty;
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}
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// Is this another levelled item or a real item?
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MWWorld::ManualRef ref(MWBase::Environment::get().getWorld()->getStore(), item, 1);
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if (ref.getPtr().getType() != ESM::ItemLevList::sRecordId
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&& ref.getPtr().getType() != ESM::CreatureLevList::sRecordId)
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{
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return item;
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}
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else
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{
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if (ref.getPtr().getType() == ESM::ItemLevList::sRecordId)
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return getLevelledItem(ref.getPtr().get<ESM::ItemLevList>()->mBase, false, prng);
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else
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return getLevelledItem(ref.getPtr().get<ESM::CreatureLevList>()->mBase, true, prng);
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}
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}
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}
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