Core/Spells: Implemented SUMMON_PROP_FLAG_PERSONAL_GROUP_SPAWN

src/server/game/DataStores/DBCEnums.h

@@ -1431,7 +1431,7 @@ enum SummonPropFlags
     SUMMON_PROP_FLAG_UNK2            = 0x00000002,          // 616 spells in 3.0.3, something friendly
     SUMMON_PROP_FLAG_UNK3            = 0x00000004,          // 22 spells in 3.0.3, no idea...
     SUMMON_PROP_FLAG_UNK4            = 0x00000008,          // 49 spells in 3.0.3, some mounts
-    SUMMON_PROP_FLAG_PERSONAL_SPAWN  = 0x00000010,          // Personal Spawn (creature visible only by summoner)
+    SUMMON_PROP_FLAG_PERSONAL_SPAWN  = 0x00000010,          // Only Visible to Summoner
     SUMMON_PROP_FLAG_UNK6            = 0x00000020,          // 0 spells in 3.3.5, unused
     SUMMON_PROP_FLAG_UNK7            = 0x00000040,          // 12 spells in 3.0.3, no idea
     SUMMON_PROP_FLAG_UNK8            = 0x00000080,          // 4 spells in 3.0.3, no idea
@@ -1443,7 +1443,7 @@ enum SummonPropFlags
     SUMMON_PROP_FLAG_UNK14           = 0x00002000,          // Guides, player follows
     SUMMON_PROP_FLAG_UNK15           = 0x00004000,          // Force of Nature, Shadowfiend, Feral Spirit, Summon Water Elemental
     SUMMON_PROP_FLAG_UNK16           = 0x00008000,          // Light/Dark Bullet, Soul/Fiery Consumption, Twisted Visage, Twilight Whelp. Phase related?
-    SUMMON_PROP_FLAG_UNK17           = 0x00010000,
+    SUMMON_PROP_FLAG_PERSONAL_GROUP_SPAWN = 0x00010000,     // Only Visible to Summoner's Group
     SUMMON_PROP_FLAG_UNK18           = 0x00020000,
     SUMMON_PROP_FLAG_UNK19           = 0x00040000,
     SUMMON_PROP_FLAG_UNK20           = 0x00080000,

src/server/game/Entities/Object/Object.cpp

@@ -1424,6 +1424,10 @@ bool WorldObject::CheckPrivateObjectOwnerVisibility(WorldObject const* seer) con
     if (_privateObjectOwner == seer->GetPrivateObjectOwner())
         return true;
 
+    if (Player const* playerSeer = seer->ToPlayer())
+        if (playerSeer->IsInGroup(_privateObjectOwner))
+            return true;
+
     return false;
 }
 

src/server/game/Entities/Player/Player.cpp

@@ -24403,6 +24403,19 @@ void Player::ClearComboPoints()
     SetPower(POWER_COMBO_POINTS, 0);
 }
 
+bool Player::IsInGroup(ObjectGuid groupGuid) const
+{
+    if (Group const* group = GetGroup())
+        if (group->GetGUID() == groupGuid)
+            return true;
+
+    if (Group const* group = GetOriginalGroup())
+        if (group->GetGUID() == groupGuid)
+            return true;
+
+    return false;
+}
+
 void Player::SetGroup(Group* group, int8 subgroup)
 {
     if (group == nullptr)

src/server/game/Entities/Player/Player.h

@@ -2334,6 +2334,7 @@ class TC_GAME_API Player : public Unit, public GridObject<Player>
         /***                   GROUP SYSTEM                    ***/
         /*********************************************************/
 
+        bool IsInGroup(ObjectGuid groupGuid) const;
         Group* GetGroupInvite() const { return m_groupInvite; }
         void SetGroupInvite(Group* group) { m_groupInvite = group; }
         Group* GetGroup() { return m_group.getTarget(); }

src/server/game/Spells/SpellEffects.cpp

@@ -1892,9 +1892,20 @@ void Spell::EffectSummonType(SpellEffIndex effIndex)
     if (!m_originalCaster)
         return;
 
-    ObjectGuid privateObjectOwner;
-    if (properties->Flags & SUMMON_PROP_FLAG_PERSONAL_SPAWN)
-        privateObjectOwner = m_originalCaster->IsPrivateObject() ? m_originalCaster->GetPrivateObjectOwner() : m_originalCaster->GetGUID();
+    ObjectGuid privateObjectOwner = [&]()
+    {
+        if (!(properties->Flags & (SUMMON_PROP_FLAG_PERSONAL_SPAWN | SUMMON_PROP_FLAG_PERSONAL_GROUP_SPAWN)))
+            return ObjectGuid::Empty;
+
+        if (m_originalCaster->IsPrivateObject())
+            return m_originalCaster->GetPrivateObjectOwner();
+
+        if (properties->Flags & SUMMON_PROP_FLAG_PERSONAL_GROUP_SPAWN)
+            if (m_originalCaster->IsPlayer() && m_originalCaster->ToPlayer()->GetGroup())
+                return m_originalCaster->ToPlayer()->GetGroup()->GetGUID();
+
+        return m_originalCaster->GetGUID();
+    }();
 
     int32 duration = m_spellInfo->CalcDuration(m_originalCaster);