Core/GameObject: implemented gameobject_overrides table to change faction and flags values on a per-spawn basis

Updates #20957
Closes #20958

(cherry picked from commit 34967e9c32b2c7e871bb93f41609a3b08ad92931)

1 files changed, 50 insertions, 7 deletions

diff --git a/src/server/game/Globals/ObjectMgr.cpp b/src/server/game/Globals/ObjectMgr.cpp
index 42ac714018d..84117d199ca 100644
--- a/src/server/game/Globals/ObjectMgr.cpp
+++ b/src/server/game/Globals/ObjectMgr.cpp
@@ -7432,18 +7432,18 @@ void ObjectMgr::LoadGameObjectTemplateAddons()
         }
 
         GameObjectTemplateAddon& gameObjectAddon = _gameObjectTemplateAddonStore[entry];
-        gameObjectAddon.faction       = uint32(fields[1].GetUInt16());
-        gameObjectAddon.flags         = fields[2].GetUInt32();
-        gameObjectAddon.mingold       = fields[3].GetUInt32();
-        gameObjectAddon.maxgold       = fields[4].GetUInt32();
+        gameObjectAddon.Faction       = uint32(fields[1].GetUInt16());
+        gameObjectAddon.Flags         = fields[2].GetUInt32();
+        gameObjectAddon.Mingold       = fields[3].GetUInt32();
+        gameObjectAddon.Maxgold       = fields[4].GetUInt32();
         gameObjectAddon.WorldEffectID = fields[5].GetUInt32();
         gameObjectAddon.AIAnimKitID   = fields[6].GetUInt32();
 
         // checks
-        if (gameObjectAddon.faction && !sFactionTemplateStore.LookupEntry(gameObjectAddon.faction))
-            TC_LOG_ERROR("sql.sql", "GameObject (Entry: %u) has invalid faction (%u) defined in `gameobject_template_addon`.", entry, gameObjectAddon.faction);
+        if (gameObjectAddon.Faction && !sFactionTemplateStore.LookupEntry(gameObjectAddon.Faction))
+            TC_LOG_ERROR("sql.sql", "GameObject (Entry: %u) has invalid faction (%u) defined in `gameobject_template_addon`.", entry, gameObjectAddon.Faction);
 
-        if (gameObjectAddon.maxgold > 0)
+        if (gameObjectAddon.Maxgold > 0)
         {
             switch (got->type)
             {
@@ -7475,6 +7475,44 @@ void ObjectMgr::LoadGameObjectTemplateAddons()
     TC_LOG_INFO("server.loading", ">> Loaded %u game object template addons in %u ms", count, GetMSTimeDiffToNow(oldMSTime));
 }
 
+void ObjectMgr::LoadGameObjectOverrides()
+{
+    uint32 oldMSTime = getMSTime();
+
+    //                                                     0        1      2
+    QueryResult result = WorldDatabase.Query("SELECT spawnId, faction, flags FROM gameobject_overrides");
+    if (!result)
+    {
+        TC_LOG_INFO("server.loading", ">> Loaded 0 gameobject faction and flags overrides. DB table `gameobject_overrides` is empty.");
+        return;
+    }
+
+    uint32 count = 0;
+    do
+    {
+        Field* fields = result->Fetch();
+
+        ObjectGuid::LowType spawnId = fields[0].GetUInt64();
+        GameObjectData const* goData = GetGameObjectData(spawnId);
+        if (!goData)
+        {
+            TC_LOG_ERROR("sql.sql", "GameObject (SpawnId: " UI64FMTD ") does not exist but has a record in `gameobject_overrides`", spawnId);
+            continue;
+        }
+
+        GameObjectOverride& gameObjectOverride = _gameObjectOverrideStore[spawnId];
+        gameObjectOverride.Faction = fields[1].GetUInt32();
+        gameObjectOverride.Flags = fields[2].GetUInt32();
+
+        if (gameObjectOverride.Faction && !sFactionTemplateStore.LookupEntry(gameObjectOverride.Faction))
+            TC_LOG_ERROR("sql.sql", "GameObject (SpawnId: " UI64FMTD ") has invalid faction (%u) defined in `gameobject_overrides`.", spawnId, gameObjectOverride.Faction);
+
+        ++count;
+    } while (result->NextRow());
+
+    TC_LOG_INFO("server.loading", ">> Loaded %u gameobject faction and flags overrides in %u ms", count, GetMSTimeDiffToNow(oldMSTime));
+}
+
 void ObjectMgr::LoadExplorationBaseXP()
 {
     uint32 oldMSTime = getMSTime();
@@ -9934,6 +9972,11 @@ GameObjectTemplateAddon const* ObjectMgr::GetGameObjectTemplateAddon(uint32 entr
     return nullptr;
 }
 
+GameObjectOverride const* ObjectMgr::GetGameObjectOverride(ObjectGuid::LowType spawnId) const
+{
+    return Trinity::Containers::MapGetValuePtr(_gameObjectOverrideStore, spawnId);
+}
+
 CreatureTemplate const* ObjectMgr::GetCreatureTemplate(uint32 entry) const
 {
     return Trinity::Containers::MapGetValuePtr(_creatureTemplateStore, entry);