Core/Vehicles: add a way to delay the Vehicle despawn Time if its needed.

Port From (https://github.com/TrinityCore/TrinityCore/commit/c7b10d3c5fd082faf6c2835239e340babc3dfc76)

Source/Game/Entities/Player/Player.cs

@@ -232,7 +232,7 @@ namespace Game.Entities
             SetInventorySlotCount(InventorySlots.DefaultSize);
 
             // set starting level
-            SetLevel((uint)GetStartLevel(createInfo.RaceId, createInfo.ClassId, createInfo.TemplateSet));
+            SetLevel(GetStartLevel(createInfo.RaceId, createInfo.ClassId, createInfo.TemplateSet));
 
             InitRunes();
 

Source/Game/Entities/Unit/Unit.cs

@@ -966,7 +966,7 @@ namespace Game.Entities
 
             if (vehicle.GetBase().HasUnitTypeMask(UnitTypeMask.Minion) && vehicle.GetBase().IsTypeId(TypeId.Unit))
                 if (((Minion)vehicle.GetBase()).GetOwner() == this)
-                    vehicle.GetBase().ToCreature().DespawnOrUnsummon();
+                    vehicle.GetBase().ToCreature().DespawnOrUnsummon(vehicle.GetDespawnDelay());
 
             if (HasUnitTypeMask(UnitTypeMask.Accessory))
             {

Source/Game/Entities/Vehicle.cs

@@ -509,6 +509,15 @@ namespace Game.Entities
             }
         }
 
+        public TimeSpan GetDespawnDelay()
+        {
+            VehicleTemplate vehicleTemplate = Global.ObjectMgr.GetVehicleTemplate(this);
+            if (vehicleTemplate != null)
+                return vehicleTemplate.DespawnDelay;
+
+            return TimeSpan.FromMilliseconds(1);
+        }
+
         public Unit GetBase() { return _me; }
         public VehicleRecord GetVehicleInfo() { return _vehicleInfo; }
         public uint GetCreatureEntry() { return _creatureEntry; }
@@ -718,4 +727,9 @@ namespace Game.Entities
         public sbyte SeatId;
         public byte SummonedType;
     }
+
+    public class VehicleTemplate
+    {
+        public TimeSpan DespawnDelay;
+    }
 }

Source/Game/Globals/ObjectManager.cs

@@ -10022,6 +10022,38 @@ namespace Game
         }
 
         //Vehicles
+        public void LoadVehicleTemplate()
+        {
+            uint oldMSTime = Time.GetMSTime();
+
+            _vehicleTemplateStore.Clear();
+
+            //                                         0           1
+            SQLResult result = DB.World.Query("SELECT creatureId, despawnDelayMs FROM vehicle_template");
+            if (result.IsEmpty())
+            {
+                Log.outInfo(LogFilter.ServerLoading, "Loaded 0 vehicle template. DB table `vehicle_template` is empty.");
+                return;
+            }
+
+            do
+            {
+                uint creatureId = result.Read<uint>(0);
+
+                if (Global.ObjectMgr.GetCreatureTemplate(creatureId) == null)
+                {
+                    Log.outError(LogFilter.Sql, $"Table `vehicle_template`: Vehicle {creatureId} does not exist.");
+                    continue;
+                }
+
+                VehicleTemplate vehicleTemplate = new VehicleTemplate();
+                vehicleTemplate.DespawnDelay = TimeSpan.FromMilliseconds(result.Read<int>(1));
+                _vehicleTemplateStore[creatureId] = vehicleTemplate;
+
+            } while (result.NextRow());
+
+            Log.outInfo(LogFilter.ServerLoading, $"Loaded {_vehicleTemplateStore.Count} Vehicle Template entries in {Time.GetMSTimeDiffToNow(oldMSTime)} ms");
+        }
         public void LoadVehicleTemplateAccessories()
         {
             uint oldMSTime = Time.GetMSTime();
@@ -10073,6 +10105,7 @@ namespace Game
 
             Log.outInfo(LogFilter.ServerLoading, "Loaded {0} Vehicle Template Accessories in {1} ms", count, Time.GetMSTimeDiffToNow(oldMSTime));
         }
+
         public void LoadVehicleAccessories()
         {
             uint oldMSTime = Time.GetMSTime();
@@ -10114,6 +10147,10 @@ namespace Game
             Log.outInfo(LogFilter.ServerLoading, "Loaded {0} Vehicle Accessories in {1} ms", count, Time.GetMSTimeDiffToNow(oldMSTime));
         }
 
+        public VehicleTemplate GetVehicleTemplate(Vehicle veh)
+        {
+            return _vehicleTemplateStore.LookupByKey(veh.GetCreatureEntry());
+        }
         public List<VehicleAccessory> GetVehicleAccessoryList(Vehicle veh)
         {
             Creature cre = veh.GetBase().ToCreature();
@@ -10239,6 +10276,7 @@ namespace Game
         MultiMap<uint, string> _petHalfName1 = new MultiMap<uint, string>();
 
         //Vehicles
+        Dictionary<uint, VehicleTemplate> _vehicleTemplateStore = new Dictionary<uint, VehicleTemplate>();
         MultiMap<uint, VehicleAccessory> _vehicleTemplateAccessoryStore = new MultiMap<uint, VehicleAccessory>();
         MultiMap<ulong, VehicleAccessory> _vehicleAccessoryStore = new MultiMap<ulong, VehicleAccessory>();
 

Source/Game/Server/WorldManager.cs

@@ -652,6 +652,9 @@ namespace Game
             Log.outInfo(LogFilter.ServerLoading, "Loading NPCSpellClick Data..."); // must be after LoadQuests
             Global.ObjectMgr.LoadNPCSpellClickSpells();
 
+            Log.outInfo(LogFilter.ServerLoading, "Loading Vehicle Templates...");
+            Global.ObjectMgr.LoadVehicleTemplate();                          // must be after LoadCreatureTemplates()
+
             Log.outInfo(LogFilter.ServerLoading, "Loading Vehicle Template Accessories...");
             Global.ObjectMgr.LoadVehicleTemplateAccessories();                // must be after LoadCreatureTemplates() and LoadNPCSpellClickSpells()
 

sql/updates/world/master/2020_12_31_00_world.sql

@@ -0,0 +1,15 @@
+--
+-- Table structure for table `vehicle_template`
+--
+DROP TABLE IF EXISTS `vehicle_template`;
+CREATE TABLE `vehicle_template` (
+  `creatureId` int(10) unsigned NOT NULL,
+  `despawnDelayMs` int(11) NOT NULL DEFAULT '0',
+  PRIMARY KEY (`creatureId`)
+) ENGINE=MyISAM;
+
+DELETE FROM `command` WHERE `name`='reload vehicle_template';
+INSERT INTO `command` (`name`,`permission`,`help`) VALUES
+('reload vehicle_template', 881, "Syntax: .reload vehicle_template
+
+Reloads vehicle template definitions from the database.");