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81 lines
3.2 KiB
C++
81 lines
3.2 KiB
C++
#ifndef OPENMW_MECHANICS_LEVELLEDLIST_H
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#define OPENMW_MECHANICS_LEVELLEDLIST_H
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#include "../mwworld/ptr.hpp"
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#include "../mwworld/manualref.hpp"
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#include "../mwworld/class.hpp"
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#include "../mwbase/world.hpp"
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#include "../mwbase/environment.hpp"
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#include "../mwmechanics/creaturestats.hpp"
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namespace MWMechanics
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{
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/// @return ID of resulting item, or empty if none
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inline std::string getLevelledItem (const ESM::LeveledListBase* levItem, bool creature, unsigned char failChance=0)
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{
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const std::vector<ESM::LeveledListBase::LevelItem>& items = levItem->mList;
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const MWWorld::Ptr& player = MWBase::Environment::get().getWorld()->getPlayerPtr();
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int playerLevel = player.getClass().getCreatureStats(player).getLevel();
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failChance += levItem->mChanceNone;
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int random = std::rand()/ (static_cast<double> (RAND_MAX) + 1) * 100; // [0, 99]
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if (random < failChance)
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return std::string();
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std::vector<std::string> candidates;
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int highestLevel = 0;
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for (std::vector<ESM::LeveledListBase::LevelItem>::const_iterator it = items.begin(); it != items.end(); ++it)
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{
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if (it->mLevel > highestLevel && it->mLevel <= playerLevel)
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highestLevel = it->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;
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if (creature)
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allLevels = levItem->mFlags & ESM::CreatureLevList::AllLevels;
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std::pair<int, std::string> highest = std::make_pair(-1, "");
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for (std::vector<ESM::LeveledListBase::LevelItem>::const_iterator it = items.begin(); it != items.end(); ++it)
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{
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if (playerLevel >= it->mLevel
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&& (allLevels || it->mLevel == highestLevel))
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{
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candidates.push_back(it->mId);
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if (it->mLevel >= highest.first)
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highest = std::make_pair(it->mLevel, it->mId);
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}
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}
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if (candidates.empty())
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return std::string();
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std::string item = candidates[std::rand()%candidates.size()];
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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(Misc::StringUtils::lowerCase(item)))
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{
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std::cerr << "Warning: ignoring nonexistent item '" << item << "' in levelled list '" << levItem->mId << "'" << std::endl;
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return std::string();
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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().getTypeName() != typeid(ESM::ItemLevList).name()
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&& ref.getPtr().getTypeName() != typeid(ESM::CreatureLevList).name())
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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().getTypeName() == typeid(ESM::ItemLevList).name())
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return getLevelledItem(ref.getPtr().get<ESM::ItemLevList>()->mBase, failChance);
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else
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return getLevelledItem(ref.getPtr().get<ESM::CreatureLevList>()->mBase, failChance);
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}
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}
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}
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#endif
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