TimedSpawner can spawn objects in containers (#46212)

* TimedSpawner can spawn objects in containers

* Hatch ducks and chickens into containers

* Update Content.Server/Spawners/EntitySystems/SpawnerSystem.cs

---------

Co-authored-by: Pok <113675512+Pok27@users.noreply.github.com>

Content.Server/Spawners/Components/TimedSpawnerComponent.cs

@@ -51,6 +51,12 @@ public sealed partial class TimedSpawnerComponent : Component, ISerializationHoo
     [DataField(customTypeSerializer: typeof(TimeOffsetSerializer)), AutoPausedField]
     public TimeSpan NextFire = TimeSpan.Zero;
 
+    /// <summary>
+    /// Determines whether to allow spawning entities in the spawner's container, or if they should always be outside.
+    /// </summary>
+    [DataField]
+    public bool AllowContainerPlacement = false;
+
     void ISerializationHooks.AfterDeserialization()
     {
         if (MinimumEntitiesSpawned > MaximumEntitiesSpawned)

Content.Server/Spawners/EntitySystems/SpawnerSystem.cs

@@ -49,7 +49,10 @@ public sealed partial class SpawnerSystem : EntitySystem
         for (var i = 0; i < number; i++)
         {
             var entity = _random.Pick(component.Prototypes);
-            SpawnAtPosition(entity, coordinates);
+            if (component.AllowContainerPlacement)
+                SpawnNextToOrDrop(entity, uid);
+            else
+                SpawnAtPosition(entity, coordinates);
         }
     }
 }

Resources/Prototypes/Entities/Mobs/NPCs/animals.yml

@@ -357,6 +357,7 @@
     - MobChicken1
     - MobChicken2
     intervalSeconds: 20
+    allowContainerPlacement: true
   - type: TimedDespawn #delete the egg after the chicken spawns
     lifetime: 21
 
@@ -813,6 +814,7 @@
       - MobDuckWhite
       - MobDuckBrown
       intervalSeconds: 20
+      allowContainerPlacement: true
     - type: TimedDespawn #delete the egg after the chicken spawns
       lifetime: 21