krageon/openmw-tes3coop
1
0
Fork 0
forked from teamnwah/openmw-tes3coop
Code Issues Pull requests Releases Wiki Activity

Merge pull request #1549 from akortunov/itemmodels

Browse source 
Item models reworking
This commit is contained in:
scrawl 2017-11-11 22:12:07 +00:00 committed by GitHub
commit 98b4f9c596
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
15 changed files with 265 additions and 130 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
apps/openmw/mwbase/mechanicsmanager.hpp
View file

@ -140,7 +140,7 @@ namespace MWBase
/// Utility to check if taking this item is illegal and calling commitCrime if so
/// @param container The container the item is in; may be empty for an item in the world
virtual void itemTaken (const MWWorld::Ptr& ptr, const MWWorld::Ptr& item, const MWWorld::Ptr& container,
int count) = 0;
int count, bool alarm = true) = 0;
/// Utility to check if opening (i.e. unlocking) this object is illegal and calling commitCrime if so
virtual void objectOpened (const MWWorld::Ptr& ptr, const MWWorld::Ptr& item) = 0;
/// Attempt sleeping in a bed. If this is illegal, call commitCrime.
@ -238,6 +238,7 @@ namespace MWBase
/// Has the player stolen this item from the given owner?
virtual bool isItemStolenFrom(const std::string& itemid, const std::string& ownerid) = 0;
virtual bool isBoundItem(const MWWorld::Ptr& item) = 0;
virtual bool isAllowedToUse (const MWWorld::Ptr& ptr, const MWWorld::Ptr& target, MWWorld::Ptr& victim) = 0;
/// Turn actor into werewolf or normal form.
@ -250,7 +251,6 @@ namespace MWBase
virtual void cleanupSummonedCreature(const MWWorld::Ptr& caster, int creatureActorId) = 0;
virtual void confiscateStolenItemToOwner(const MWWorld::Ptr &player, const MWWorld::Ptr &item, const MWWorld::Ptr& victim, int count) = 0;
virtual bool isAttackPrepairing(const MWWorld::Ptr& ptr) = 0;
virtual bool isRunning(const MWWorld::Ptr& ptr) = 0;
virtual bool isSneaking(const MWWorld::Ptr& ptr) = 0;

80
apps/openmw/mwgui/container.cpp
View file

@ -8,12 +8,10 @@
#include "../mwbase/windowmanager.hpp"
#include "../mwbase/dialoguemanager.hpp"
#include "../mwbase/mechanicsmanager.hpp"
#include "../mwmechanics/actorutil.hpp"
#include "../mwworld/class.hpp"
#include "../mwworld/inventorystore.hpp"
#include "../mwmechanics/pickpocket.hpp"
#include "../mwmechanics/creaturestats.hpp"
#include "countdialog.hpp"
@ -33,7 +31,6 @@ namespace MWGui
ContainerWindow::ContainerWindow(DragAndDrop* dragAndDrop)
: WindowBase("openmw_container_window.layout")
, mDragAndDrop(dragAndDrop)
, mPickpocketDetected(false)
, mSortModel(NULL)
, mModel(NULL)
, mSelectedItem(-1)
@ -55,9 +52,8 @@ namespace MWGui
void ContainerWindow::onItemSelected(int index)
{
if (mDragAndDrop->mIsOnDragAndDrop)
if (mDragAndDrop->mIsOnDragAndDrop && mModel)
{
if (mModel && mModel->allowedToInsertItems())
dropItem();
return;
}
@ -100,39 +96,20 @@ namespace MWGui
void ContainerWindow::dropItem()
{
if (mPtr.getTypeName() == typeid(ESM::Container).name())
{
// check container organic flag
MWWorld::LiveCellRef<ESM::Container>* ref = mPtr.get<ESM::Container>();
if (ref->mBase->mFlags & ESM::Container::Organic)
{
MWBase::Environment::get().getWindowManager()->
messageBox("#{sContentsMessage2}");
return;
}
// check that we don't exceed container capacity
MWWorld::Ptr item = mDragAndDrop->mItem.mBase;
float weight = item.getClass().getWeight(item) * mDragAndDrop->mDraggedCount;
if (mPtr.getClass().getCapacity(mPtr) < mPtr.getClass().getEncumbrance(mPtr) + weight)
{
MWBase::Environment::get().getWindowManager()->messageBox("#{sContentsMessage3}");
return;
}
}
bool success = mModel->onDropItem(mDragAndDrop->mItem.mBase, mDragAndDrop->mDraggedCount);
if (success)
mDragAndDrop->drop(mModel, mItemView);
}
void ContainerWindow::onBackgroundSelected()
{
if (mDragAndDrop->mIsOnDragAndDrop && mModel && mModel->allowedToInsertItems())
if (mDragAndDrop->mIsOnDragAndDrop && mModel)
dropItem();
}
void ContainerWindow::setPtr(const MWWorld::Ptr& container)
{
mPickpocketDetected = false;
mPtr = container;
bool loot = mPtr.getClass().isActor() && mPtr.getClass().getCreatureStats(mPtr).isDead();
@ -142,8 +119,7 @@ namespace MWGui
if (mPtr.getClass().isNpc() && !loot)
{
// we are stealing stuff
MWWorld::Ptr player = MWMechanics::getPlayer();
mModel = new PickpocketItemModel(player, new InventoryItemModel(container),
mModel = new PickpocketItemModel(mPtr, new InventoryItemModel(container),
!mPtr.getClass().getCreatureStats(mPtr).getKnockedDown());
}
else
@ -178,24 +154,7 @@ namespace MWGui
{
WindowBase::onClose();
if (dynamic_cast<PickpocketItemModel*>(mModel)
// Make sure we were actually closed, rather than just temporarily hidden (e.g. console or main menu opened)
&& !MWBase::Environment::get().getWindowManager()->containsMode(GM_Container)
// If it was already detected while taking an item, no need to check now
&& !mPickpocketDetected
)
{
MWWorld::Ptr player = MWMechanics::getPlayer();
MWMechanics::Pickpocket pickpocket(player, mPtr);
if (pickpocket.finish())
{
MWBase::Environment::get().getMechanicsManager()->commitCrime(
player, mPtr, MWBase::MechanicsManager::OT_Pickpocket, 0, true);
MWBase::Environment::get().getWindowManager()->removeGuiMode(MWGui::GM_Container);
mPickpocketDetected = true;
return;
}
}
mModel->onClose();
}
void ContainerWindow::onCloseButtonClicked(MyGUI::Widget* _sender)
@ -271,32 +230,7 @@ namespace MWGui
bool ContainerWindow::onTakeItem(const ItemStack &item, int count)
{
MWWorld::Ptr player = MWMechanics::getPlayer();
// TODO: move to ItemModels
if (dynamic_cast<PickpocketItemModel*>(mModel)
&& !mPtr.getClass().getCreatureStats(mPtr).getKnockedDown())
{
MWMechanics::Pickpocket pickpocket(player, mPtr);
if (pickpocket.pick(item.mBase, count))
{
MWBase::Environment::get().getMechanicsManager()->commitCrime(
player, mPtr, MWBase::MechanicsManager::OT_Pickpocket, 0, true);
MWBase::Environment::get().getWindowManager()->removeGuiMode(MWGui::GM_Container);
mPickpocketDetected = true;
return false;
}
else
player.getClass().skillUsageSucceeded(player, ESM::Skill::Sneak, 1);
}
else
{
// Looting a dead corpse is considered OK
if (mPtr.getClass().isActor() && mPtr.getClass().getCreatureStats(mPtr).isDead())
return true;
else
MWBase::Environment::get().getMechanicsManager()->itemTaken(player, item.mBase, mPtr, count);
}
return true;
return mModel->onTakeItem(item.mBase, count);
}
}

2
apps/openmw/mwgui/container.hpp
View file

@ -44,8 +44,6 @@ namespace MWGui
private:
DragAndDrop* mDragAndDrop;
bool mPickpocketDetected;
MWGui::ItemView* mItemView;
SortFilterItemModel* mSortModel;
ItemModel* mModel;

54
apps/openmw/mwgui/containeritemmodel.cpp
View file

@ -2,12 +2,16 @@
#include <algorithm>
#include "../mwmechanics/creaturestats.hpp"
#include "../mwmechanics/actorutil.hpp"
#include "../mwworld/containerstore.hpp"
#include "../mwworld/class.hpp"
#include "../mwbase/world.hpp"
#include "../mwbase/mechanicsmanager.hpp"
#include "../mwbase/environment.hpp"
#include "../mwbase/mechanicsmanager.hpp"
#include "../mwbase/windowmanager.hpp"
#include "../mwbase/world.hpp"
#include "../mwmechanics/actorutil.hpp"
@ -185,5 +189,51 @@ void ContainerItemModel::update()
}
}
}
bool ContainerItemModel::onDropItem(const MWWorld::Ptr &item, int count)
{
if (mItemSources.empty())
return false;
MWWorld::Ptr target = mItemSources[0];
if (target.getTypeName() != typeid(ESM::Container).name())
return true;
// check container organic flag
MWWorld::LiveCellRef<ESM::Container>* ref = target.get<ESM::Container>();
if (ref->mBase->mFlags & ESM::Container::Organic)
{
MWBase::Environment::get().getWindowManager()->
messageBox("#{sContentsMessage2}");
return false;
}
// check that we don't exceed container capacity
float weight = item.getClass().getWeight(item) * count;
if (target.getClass().getCapacity(target) < target.getClass().getEncumbrance(target) + weight)
{
MWBase::Environment::get().getWindowManager()->messageBox("#{sContentsMessage3}");
return false;
}
return true;
}
bool ContainerItemModel::onTakeItem(const MWWorld::Ptr &item, int count)
{
if (mItemSources.empty())
return false;
MWWorld::Ptr target = mItemSources[0];
// Looting a dead corpse is considered OK
if (target.getClass().isActor() && target.getClass().getCreatureStats(target).isDead())
return true;
MWWorld::Ptr player = MWMechanics::getPlayer();
MWBase::Environment::get().getMechanicsManager()->itemTaken(player, item, target, count);
return true;
}
}

4
apps/openmw/mwgui/containeritemmodel.hpp
View file

@ -18,6 +18,10 @@ namespace MWGui
ContainerItemModel (const MWWorld::Ptr& source);
virtual bool allowedToUseItems() const;
virtual bool onDropItem(const MWWorld::Ptr &item, int count);
virtual bool onTakeItem(const MWWorld::Ptr &item, int count);
virtual ItemStack getItem (ModelIndex index);
virtual ModelIndex getIndex (ItemStack item);
virtual size_t getItemCount();

15
apps/openmw/mwgui/inventoryitemmodel.cpp
View file

@ -9,6 +9,9 @@
#include "../mwworld/class.hpp"
#include "../mwworld/inventorystore.hpp"
#include "../mwbase/environment.hpp"
#include "../mwbase/mechanicsmanager.hpp"
namespace MWGui
{
@ -116,4 +119,16 @@ void InventoryItemModel::update()
}
}
bool InventoryItemModel::onTakeItem(const MWWorld::Ptr &item, int count)
{
// Looting a dead corpse is considered OK
if (mActor.getClass().isActor() && mActor.getClass().getCreatureStats(mActor).isDead())
return true;
MWWorld::Ptr player = MWMechanics::getPlayer();
MWBase::Environment::get().getMechanicsManager()->itemTaken(player, item, mActor, count);
return true;
}
}

2
apps/openmw/mwgui/inventoryitemmodel.hpp
View file

@ -15,6 +15,8 @@ namespace MWGui
virtual ModelIndex getIndex (ItemStack item);
virtual size_t getItemCount();
virtual bool onTakeItem(const MWWorld::Ptr &item, int count);
virtual MWWorld::Ptr copyItem (const ItemStack& item, size_t count, bool setNewOwner=false);
virtual void removeItem (const ItemStack& item, size_t count);

55
apps/openmw/mwgui/itemmodel.cpp
View file

@ -9,6 +9,7 @@
#include "../mwbase/world.hpp"
#include "../mwbase/environment.hpp"
#include "../mwbase/mechanicsmanager.hpp"
namespace MWGui
{
@ -23,38 +24,7 @@ namespace MWGui
if (base.getClass().getEnchantment(base) != "")
mFlags |= Flag_Enchanted;
static std::set<std::string> boundItemIDCache;
// If this is empty then we haven't executed the GMST cache logic yet; or there isn't any sMagicBound* GMST's for some reason
if (boundItemIDCache.empty())
{
// Build a list of known bound item ID's
const MWWorld::Store<ESM::GameSetting> &gameSettings = MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>();
for (MWWorld::Store<ESM::GameSetting>::iterator currentIteration = gameSettings.begin(); currentIteration != gameSettings.end(); ++currentIteration)
{
const ESM::GameSetting &currentSetting = *currentIteration;
std::string currentGMSTID = currentSetting.mId;
Misc::StringUtils::lowerCaseInPlace(currentGMSTID);
// Don't bother checking this GMST if it's not a sMagicBound* one.
const std::string& toFind = "smagicbound";
if (currentGMSTID.compare(0, toFind.length(), toFind) != 0)
continue;
// All sMagicBound* GMST's should be of type string
std::string currentGMSTValue = currentSetting.getString();
Misc::StringUtils::lowerCaseInPlace(currentGMSTValue);
boundItemIDCache.insert(currentGMSTValue);
}
}
// Perform bound item check and assign the Flag_Bound bit if it passes
std::string tempItemID = base.getCellRef().getRefId();
Misc::StringUtils::lowerCaseInPlace(tempItemID);
if (boundItemIDCache.count(tempItemID) != 0)
if (MWBase::Environment::get().getMechanicsManager()->isBoundItem(base))
mFlags |= Flag_Bound;
}
@ -124,7 +94,12 @@ namespace MWGui
return true;
}
bool ItemModel::allowedToInsertItems() const
bool ItemModel::onDropItem(const MWWorld::Ptr &item, int count)
{
return true;
}
bool ItemModel::onTakeItem(const MWWorld::Ptr &item, int count)
{
return true;
}
@ -198,4 +173,18 @@ namespace MWGui
mSourceModel = sourceModel;
}
void ProxyItemModel::onClose()
{
mSourceModel->onClose();
}
bool ProxyItemModel::onDropItem(const MWWorld::Ptr &item, int count)
{
return mSourceModel->onDropItem(item, count);
}
bool ProxyItemModel::onTakeItem(const MWWorld::Ptr &item, int count)
{
return mSourceModel->onTakeItem(item, count);
}
}

12
apps/openmw/mwgui/itemmodel.hpp
View file

@ -72,9 +72,11 @@ namespace MWGui
/// Is the player allowed to use items from this item model? (default true)
virtual bool allowedToUseItems() const;
/// Is the player allowed to insert items into this model? (default true)
virtual bool allowedToInsertItems() const;
virtual void onClose()
{
}
virtual bool onDropItem(const MWWorld::Ptr &item, int count);
virtual bool onTakeItem(const MWWorld::Ptr &item, int count);
private:
ItemModel(const ItemModel&);
@ -91,6 +93,10 @@ namespace MWGui
bool allowedToUseItems() const;
virtual void onClose();
virtual bool onDropItem(const MWWorld::Ptr &item, int count);
virtual bool onTakeItem(const MWWorld::Ptr &item, int count);
virtual MWWorld::Ptr copyItem (const ItemStack& item, size_t count, bool setNewOwner=false);
virtual void removeItem (const ItemStack& item, size_t count);
virtual ModelIndex getIndex (ItemStack item);

71
apps/openmw/mwgui/pickpocketitemmodel.cpp
View file

@ -3,15 +3,26 @@
#include <components/misc/rng.hpp>
#include <components/esm/loadskil.hpp>
#include "../mwmechanics/actorutil.hpp"
#include "../mwmechanics/creaturestats.hpp"
#include "../mwmechanics/pickpocket.hpp"
#include "../mwworld/containerstore.hpp"
#include "../mwworld/class.hpp"
#include "../mwbase/environment.hpp"
#include "../mwbase/mechanicsmanager.hpp"
#include "../mwbase/windowmanager.hpp"
namespace MWGui
{
PickpocketItemModel::PickpocketItemModel(const MWWorld::Ptr& thief, ItemModel *sourceModel, bool hideItems)
PickpocketItemModel::PickpocketItemModel(const MWWorld::Ptr& actor, ItemModel *sourceModel, bool hideItems)
: mActor(actor), mPickpocketDetected(false)
{
MWWorld::Ptr player = MWMechanics::getPlayer();
mSourceModel = sourceModel;
int chance = thief.getClass().getSkill(thief, ESM::Skill::Sneak);
int chance = player.getClass().getSkill(player, ESM::Skill::Sneak);
mSourceModel->update();
@ -66,13 +77,63 @@ namespace MWGui
void PickpocketItemModel::removeItem (const ItemStack &item, size_t count)
{
ProxyItemModel::removeItem(item, count);
/// \todo check if player is detected
}
bool PickpocketItemModel::allowedToInsertItems() const
bool PickpocketItemModel::onDropItem(const MWWorld::Ptr &item, int count)
{
// don't allow "reverse pickpocket" (yet)
// don't allow "reverse pickpocket" (it will be handled by scripts after 1.0)
return false;
}
void PickpocketItemModel::onClose()
{
// Make sure we were actually closed, rather than just temporarily hidden (e.g. console or main menu opened)
if (MWBase::Environment::get().getWindowManager()->containsMode(GM_Container)
// If it was already detected while taking an item, no need to check now
|| mPickpocketDetected)
return;
MWWorld::Ptr player = MWMechanics::getPlayer();
MWMechanics::Pickpocket pickpocket(player, mActor);
if (pickpocket.finish())
{
MWBase::Environment::get().getMechanicsManager()->commitCrime(
player, mActor, MWBase::MechanicsManager::OT_Pickpocket, 0, true);
MWBase::Environment::get().getWindowManager()->removeGuiMode(MWGui::GM_Container);
mPickpocketDetected = true;
}
}
bool PickpocketItemModel::onTakeItem(const MWWorld::Ptr &item, int count)
{
if (mActor.getClass().getCreatureStats(mActor).getKnockedDown())
return mSourceModel->onTakeItem(item, count);
bool success = stealItem(item, count);
if (success)
{
MWWorld::Ptr player = MWMechanics::getPlayer();
MWBase::Environment::get().getMechanicsManager()->itemTaken(player, item, mActor, count, false);
}
return success;
}
bool PickpocketItemModel::stealItem(const MWWorld::Ptr &item, int count)
{
MWWorld::Ptr player = MWMechanics::getPlayer();
MWMechanics::Pickpocket pickpocket(player, mActor);
if (pickpocket.pick(item, count))
{
MWBase::Environment::get().getMechanicsManager()->commitCrime(
player, mActor, MWBase::MechanicsManager::OT_Pickpocket, 0, true);
MWBase::Environment::get().getWindowManager()->removeGuiMode(MWGui::GM_Container);
mPickpocketDetected = true;
return false;
}
else
player.getClass().skillUsageSucceeded(player, ESM::Skill::Sneak, 1);
return true;
}
}

9
apps/openmw/mwgui/pickpocketitemmodel.hpp
View file

@ -17,7 +17,14 @@ namespace MWGui
virtual size_t getItemCount();
virtual void update();
virtual void removeItem (const ItemStack& item, size_t count);
virtual bool allowedToInsertItems() const;
virtual void onClose();
virtual bool onDropItem(const MWWorld::Ptr &item, int count);
virtual bool onTakeItem(const MWWorld::Ptr &item, int count);
protected:
MWWorld::Ptr mActor;
bool mPickpocketDetected;
bool stealItem(const MWWorld::Ptr &item, int count);
private:
std::vector<ItemStack> mHiddenItems;

14
apps/openmw/mwgui/sortfilteritemmodel.cpp
View file

@ -311,4 +311,18 @@ namespace MWGui
std::sort(mItems.begin(), mItems.end(), cmp);
}
void SortFilterItemModel::onClose()
{
mSourceModel->onClose();
}
bool SortFilterItemModel::onDropItem(const MWWorld::Ptr &item, int count)
{
return mSourceModel->onDropItem(item, count);
}
bool SortFilterItemModel::onTakeItem(const MWWorld::Ptr &item, int count)
{
return mSourceModel->onTakeItem(item, count);
}
}

4
apps/openmw/mwgui/sortfilteritemmodel.hpp
View file

@ -29,6 +29,10 @@ namespace MWGui
/// Use ItemStack::Type for sorting?
void setSortByType(bool sort) { mSortByType = sort; }
void onClose();
bool onDropItem(const MWWorld::Ptr &item, int count);
bool onTakeItem(const MWWorld::Ptr &item, int count);
static const int Category_Weapon = (1<<1);
static const int Category_Apparel = (1<<2);
static const int Category_Misc = (1<<3);

53
apps/openmw/mwmechanics/mechanicsmanagerimp.cpp
View file

@ -840,6 +840,45 @@ namespace MWMechanics
mAI = true;
}
bool MechanicsManager::isBoundItem(const MWWorld::Ptr& item)
{
static std::set<std::string> boundItemIDCache;
// If this is empty then we haven't executed the GMST cache logic yet; or there isn't any sMagicBound* GMST's for some reason
if (boundItemIDCache.empty())
{
// Build a list of known bound item ID's
const MWWorld::Store<ESM::GameSetting> &gameSettings = MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>();
for (MWWorld::Store<ESM::GameSetting>::iterator currentIteration = gameSettings.begin(); currentIteration != gameSettings.end(); ++currentIteration)
{
const ESM::GameSetting &currentSetting = *currentIteration;
std::string currentGMSTID = currentSetting.mId;
Misc::StringUtils::lowerCaseInPlace(currentGMSTID);
// Don't bother checking this GMST if it's not a sMagicBound* one.
const std::string& toFind = "smagicbound";
if (currentGMSTID.compare(0, toFind.length(), toFind) != 0)
continue;
// All sMagicBound* GMST's should be of type string
std::string currentGMSTValue = currentSetting.getString();
Misc::StringUtils::lowerCaseInPlace(currentGMSTValue);
boundItemIDCache.insert(currentGMSTValue);
}
}
// Perform bound item check and assign the Flag_Bound bit if it passes
std::string tempItemID = item.getCellRef().getRefId();
Misc::StringUtils::lowerCaseInPlace(tempItemID);
if (boundItemIDCache.count(tempItemID) != 0)
return true;
return false;
}
bool MechanicsManager::isAllowedToUse (const MWWorld::Ptr& ptr, const MWWorld::Ptr& target, MWWorld::Ptr& victim)
{
if (target.isEmpty())
@ -1024,7 +1063,7 @@ namespace MWMechanics
}
void MechanicsManager::itemTaken(const MWWorld::Ptr &ptr, const MWWorld::Ptr &item, const MWWorld::Ptr& container,
int count)
int count, bool alarm)
{
if (ptr != getPlayer())
return;
@ -1053,18 +1092,28 @@ namespace MWMechanics
return;
Owner owner;
owner.first = ownerCellRef->getOwner();
owner.second = false;
if (!container.isEmpty() && container.getClass().isActor())
{
// "container" is an actor inventory, so just take actor's ID
owner.first = ownerCellRef->getRefId();
}
else
{
owner.first = ownerCellRef->getOwner();
if (owner.first.empty())
{
owner.first = ownerCellRef->getFaction();
owner.second = true;
}
}
Misc::StringUtils::lowerCaseInPlace(owner.first);
if (!Misc::StringUtils::ciEqual(item.getCellRef().getRefId(), MWWorld::ContainerStore::sGoldId))
mStolenItems[Misc::StringUtils::lowerCase(item.getCellRef().getRefId())][owner] += count;
if (alarm)
commitCrime(ptr, victim, OT_Theft, item.getClass().getValue(item) * count);
}

4
apps/openmw/mwmechanics/mechanicsmanagerimp.hpp
View file

@ -135,7 +135,7 @@ namespace MWMechanics
/// Utility to check if taking this item is illegal and calling commitCrime if so
/// @param container The container the item is in; may be empty for an item in the world
virtual void itemTaken (const MWWorld::Ptr& ptr, const MWWorld::Ptr& item, const MWWorld::Ptr& container,
int count);
int count, bool alarm = true);
/// Utility to check if opening (i.e. unlocking) this object is illegal and calling commitCrime if so
virtual void objectOpened (const MWWorld::Ptr& ptr, const MWWorld::Ptr& item);
/// Attempt sleeping in a bed. If this is illegal, call commitCrime.
@ -204,6 +204,8 @@ namespace MWMechanics
/// Has the player stolen this item from the given owner?
virtual bool isItemStolenFrom(const std::string& itemid, const std::string& ownerid);
virtual bool isBoundItem(const MWWorld::Ptr& item);
/// @return is \a ptr allowed to take/use \a target or is it a crime?
virtual bool isAllowedToUse (const MWWorld::Ptr& ptr, const MWWorld::Ptr& target, MWWorld::Ptr& victim);