Fix humanoid appearances for placement manager (#18291)

Content.Shared/Station/SharedStationSpawningSystem.cs

@@ -0,0 +1,46 @@
+using Content.Shared.Hands.Components;
+using Content.Shared.Hands.EntitySystems;
+using Content.Shared.Inventory;
+using Content.Shared.Preferences;
+using Content.Shared.Roles;
+
+namespace Content.Shared.Station;
+
+public abstract class SharedStationSpawningSystem : EntitySystem
+{
+    [Dependency] protected readonly InventorySystem InventorySystem = default!;
+    [Dependency] private   readonly SharedHandsSystem _handsSystem = default!;
+
+    /// <summary>
+    /// Equips starting gear onto the given entity.
+    /// </summary>
+    /// <param name="entity">Entity to load out.</param>
+    /// <param name="startingGear">Starting gear to use.</param>
+    /// <param name="profile">Character profile to use, if any.</param>
+    public void EquipStartingGear(EntityUid entity, StartingGearPrototype startingGear, HumanoidCharacterProfile? profile)
+    {
+        if (InventorySystem.TryGetSlots(entity, out var slotDefinitions))
+        {
+            foreach (var slot in slotDefinitions)
+            {
+                var equipmentStr = startingGear.GetGear(slot.Name, profile);
+                if (!string.IsNullOrEmpty(equipmentStr))
+                {
+                    var equipmentEntity = EntityManager.SpawnEntity(equipmentStr, EntityManager.GetComponent<TransformComponent>(entity).Coordinates);
+                    InventorySystem.TryEquip(entity, equipmentEntity, slot.Name, true);
+                }
+            }
+        }
+
+        if (!TryComp(entity, out HandsComponent? handsComponent))
+            return;
+
+        var inhand = startingGear.Inhand;
+        var coords = EntityManager.GetComponent<TransformComponent>(entity).Coordinates;
+        foreach (var (hand, prototype) in inhand)
+        {
+            var inhandEntity = EntityManager.SpawnEntity(prototype, coords);
+            _handsSystem.TryPickup(entity, inhandEntity, hand, checkActionBlocker: false, handsComp: handsComponent);
+        }
+    }
+}