forked from teamnwah/openmw-tes3coop
3f28634d1f
Note, I suspect Rng::rollClosedProbability() is not needed. The only difference between it and rollProbability() is that one time in 37k (on Windows), it will give an output of 1.0. On some versions of Linux, the value of 1.0 will occur about 1 time in 4 billion.
83 lines
3.2 KiB
C++
83 lines
3.2 KiB
C++
#ifndef OPENMW_MECHANICS_LEVELLEDLIST_H
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#define OPENMW_MECHANICS_LEVELLEDLIST_H
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#include <openengine/misc/rng.hpp>
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#include "../mwworld/ptr.hpp"
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#include "../mwworld/esmstore.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::LevelledListBase* levItem, bool creature, unsigned char failChance=0)
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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 = 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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if (OEngine::Misc::Rng::roll0to99() < 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::LevelledListBase::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) != 0;
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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::LevelledListBase::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[OEngine::Misc::Rng::rollDice(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, false, failChance);
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else
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return getLevelledItem(ref.getPtr().get<ESM::CreatureLevList>()->mBase, true, failChance);
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}
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}
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}
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#endif
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