Dynamic Creature/Go spawning:

 - True blizzlike creature spawn/respawn behavior - new creature = new object
 - Toggleable spawn groups (with C++/SAI/command options to use them)
 - Custom feature: dynamic spawn rate scaling. Accelerates respawn rate based on players in the zone.
 - Backward compatibility mode (set via group and for summons)
   to support creatures/gos that currently don't work well with this
   (this should be removed once the exceptions are fixed)

Fixes and closes #2858
Tags #8661 as fixable.
Fixes and closes #13787
Fixes #15222.

(cherry picked from commit 59db2eeea0a35028779fd76372ae06cc98c8086f)

1 files changed, 49 insertions, 15 deletions

diff --git a/src/server/game/Grids/ObjectGridLoader.cpp b/src/server/game/Grids/ObjectGridLoader.cpp
index a64771876d9..7b2ead0e1cc 100644
--- a/src/server/game/Grids/ObjectGridLoader.cpp
+++ b/src/server/game/Grids/ObjectGridLoader.cpp
@@ -16,18 +16,20 @@
  */
 
 #include "ObjectGridLoader.h"
-#include "ObjectAccessor.h"
-#include "ObjectMgr.h"
-#include "Creature.h"
-#include "GameObject.h"
-#include "DynamicObject.h"
-#include "Corpse.h"
 #include "AreaTrigger.h"
-#include "Conversation.h"
-#include "World.h"
 #include "CellImpl.h"
+#include "Conversation.h"
+#include "Corpse.h"
+#include "Creature.h"
 #include "CreatureAI.h"
+#include "DynamicObject.h"
+#include "GameObject.h"
 #include "Log.h"
+#include "ObjectAccessor.h"
+#include "ObjectMgr.h"
+#include "PhasingHandler.h"
+#include "World.h"
+#include "ScriptMgr.h"
 
 void ObjectGridEvacuator::Visit(CreatureMapType &m)
 {
@@ -120,15 +122,47 @@ void LoadHelper(CellGuidSet const& guid_set, CellCoord &cell, GridRefManager<T>
     for (CellGuidSet::const_iterator i_guid = guid_set.begin(); i_guid != guid_set.end(); ++i_guid)
     {
         T* obj = new T;
-        ObjectGuid::LowType guid = *i_guid;
-        //TC_LOG_INFO("misc", "DEBUG: LoadHelper from table: %s for (guid: %u) Loading", table, guid);
-        if (!obj->LoadFromDB(guid, map))
+
+        // Don't spawn at all if there's a respawn time
+        if ((obj->GetTypeId() == TYPEID_UNIT && !map->GetCreatureRespawnTime(*i_guid)) || (obj->GetTypeId() == TYPEID_GAMEOBJECT && !map->GetGORespawnTime(*i_guid)))
         {
-            delete obj;
-            continue;
-        }
+            ObjectGuid::LowType guid = *i_guid;
+            //TC_LOG_INFO("misc", "DEBUG: LoadHelper from table: %s for (guid: %u) Loading", table, guid);
+
+            if (obj->GetTypeId() == TYPEID_UNIT)
+            {
+                CreatureData const* cdata = sObjectMgr->GetCreatureData(guid);
+                ASSERT(cdata, "Tried to load creature with spawnId " UI64FMTD ", but no such creature exists.", guid);
+                SpawnGroupTemplateData const* const group = cdata->spawnGroupData;
+                // If creature in manual spawn group, don't spawn here, unless group is already active.
+                if ((group->flags & SPAWNGROUP_FLAG_MANUAL_SPAWN) && !group->isActive)
+                    continue;
+
+                // If script is blocking spawn, don't spawn but queue for a re-check in a little bit
+                if (!(group->flags & SPAWNGROUP_FLAG_COMPATIBILITY_MODE) && !sScriptMgr->CanSpawn(guid, cdata->id, cdata, map))
+                {
+                    map->SaveRespawnTime(SPAWN_TYPE_CREATURE, guid, cdata->id, time(NULL) + urand(4,7), map->GetZoneId(PhasingHandler::GetEmptyPhaseShift(), cdata->spawnPoint), Trinity::ComputeGridCoord(cdata->spawnPoint.GetPositionX(), cdata->spawnPoint.GetPositionY()).GetId(), false);
+                    continue;
+                }
+            }
+            else if (obj->GetTypeId() == TYPEID_GAMEOBJECT)
+            {
+                // If gameobject in manual spawn group, don't spawn here, unless group is already active.
+                GameObjectData const* godata = sObjectMgr->GetGameObjectData(guid);
+                ASSERT(godata, "Tried to load gameobject with spawnId " UI64FMTD ", but no such object exists.", guid);
+                if ((godata->spawnGroupData->flags & SPAWNGROUP_FLAG_MANUAL_SPAWN) && !godata->spawnGroupData->isActive)
+                    continue;
+            }
 
-        AddObjectHelper(cell, m, count, map, obj);
+            if (!obj->LoadFromDB(guid, map, false, false))
+            {
+                delete obj;
+                continue;
+            }
+            AddObjectHelper(cell, m, count, map, obj);
+        }
+        else
+            delete obj;
     }
 }