Add functionality for lua to view and modify ownership data for GameObjects

apps/openmw/mwlua/objectbindings.cpp

@@ -1,5 +1,7 @@
 #include "luabindings.hpp"
 
+#include <components/esm3/loadfact.hpp>
+#include <components/esm3/loadnpc.hpp>
 #include <components/lua/luastate.hpp>
 
 #include "../mwworld/cellstore.hpp"
@@ -142,6 +144,62 @@ namespace MWLua
                 context.mLuaEvents->addLocalEvent(
                     { dest.id(), std::move(eventName), LuaUtil::serialize(eventData, context.mSerializer) });
             };
+            auto getOwnerRecordId = [](const ObjectT& o) -> sol::optional<std::string> {
+                ESM::RefId owner = o.ptr().getCellRef().getOwner();
+                if (owner.empty())
+                    return sol::nullopt;
+                else
+                    return owner.serializeText();
+            };
+            auto setOwnerRecordId = [](const ObjectT& obj, sol::optional<std::string_view> ownerId) {
+                if (std::is_same_v<ObjectT, LObject> && !dynamic_cast<const SelfObject*>(&obj))
+                    throw std::runtime_error("Local scripts can set an owner only on self");
+                const MWWorld::Ptr& ptr = obj.ptr();
+
+                if (!ownerId)
+                {
+                    ptr.getCellRef().setOwner(ESM::RefId());
+                    return;
+                }
+                ESM::RefId owner = ESM::RefId::deserializeText(*ownerId);
+                const MWWorld::ESMStore& store = *MWBase::Environment::get().getESMStore();
+                if (!store.get<ESM::NPC>().search(owner))
+                    throw std::runtime_error("Invalid owner record id");
+                ptr.getCellRef().setOwner(owner);
+            };
+            objectT["ownerRecordId"] = sol::property(getOwnerRecordId, setOwnerRecordId);
+
+            auto getOwnerFactionId = [](const ObjectT& o) -> sol::optional<std::string> {
+                ESM::RefId owner = o.ptr().getCellRef().getFaction();
+                if (owner.empty())
+                    return sol::nullopt;
+                else
+                    return owner.serializeText();
+            };
+            auto setOwnerFactionId = [](const ObjectT& object, sol::optional<std::string> ownerId) {
+                ESM::RefId ownerFac;
+                if (std::is_same_v<ObjectT, LObject> && !dynamic_cast<const SelfObject*>(&object))
+                    throw std::runtime_error("Local scripts can set an owner faction only on self");
+                if (!ownerId)
+                {
+                    object.ptr().getCellRef().setFaction(ESM::RefId());
+                    return;
+                }
+                ownerFac = ESM::RefId::deserializeText(*ownerId);
+                const MWWorld::ESMStore& store = *MWBase::Environment::get().getESMStore();
+                if (!store.get<ESM::Faction>().search(ownerFac))
+                    throw std::runtime_error("Invalid owner faction id");
+                object.ptr().getCellRef().setFaction(ownerFac);
+            };
+            objectT["ownerFactionId"] = sol::property(getOwnerFactionId, setOwnerFactionId);
+
+            auto getOwnerFactionRank = [](const ObjectT& o) -> int { return o.ptr().getCellRef().getFactionRank(); };
+            auto setOwnerFactionRank = [](const ObjectT& object, int factionRank) {
+                if (std::is_same_v<ObjectT, LObject> && !dynamic_cast<const SelfObject*>(&object))
+                    throw std::runtime_error("Local scripts can set an owner faction rank only on self");
+                object.ptr().getCellRef().setFactionRank(factionRank);
+            };
+            objectT["ownerFactionRank"] = sol::property(getOwnerFactionRank, setOwnerFactionRank);
 
             objectT["activateBy"] = [](const ObjectT& object, const ObjectT& actor) {
                 const MWWorld::Ptr& objPtr = object.ptr();

files/lua_api/openmw/core.lua

@@ -111,6 +111,9 @@
 -- @field #boolean enabled Whether the object is enabled or disabled. Global scripts can set the value. Items in containers or inventories can't be disabled.
 -- @field openmw.util#Vector3 position Object position.
 -- @field openmw.util#Vector3 rotation Object rotation (ZXY order).
+-- @field #string ownerRecordId NPC who owns the object (nil if missing). Global and self scripts can set the value.
+-- @field #string ownerFactionId Faction who owns the object (nil if missing). Global and self scripts can set the value.
+-- @field #number ownerFactionRank Rank required to be allowed to pick up the object. Global and self scripts can set the value.
 -- @field #Cell cell The cell where the object currently is. During loading a game and for objects in an inventory or a container `cell` is nil.
 -- @field #any type Type of the object (one of the tables from the package @{openmw.types#types}).
 -- @field #number count Count (>1 means a stack of objects).

files/lua_api/openmw/self.lua

@@ -22,6 +22,16 @@
 -- The object the script is attached to (readonly)
 -- @field [parent=#self] openmw.core#GameObject object
 
+--- NPC who owns the object or `nil` (mutable).
+-- @field [parent=#self] #string ownerRecordId
+
+--- Faction who owns the object or `nil` (mutable).
+-- @field [parent=#self] #string ownerFactionId
+
+--- Rank required to be allowed to pick up the object (mutable).
+-- @field [parent=#self] #number ownerFactionRank
+
+
 ---
 -- Movement controls (only for actors)
 -- @field [parent=#self] #ActorControls controls
@@ -55,4 +65,3 @@
 -- @param #boolean v
 
 return nil
-