fix enemies sharing inventories

This also fixes an issue where enemies do not have weapons as their
shared inventory is full and therefore can not equip any item.

Characters/ExampleEnemy.tscn

@@ -12,6 +12,7 @@
 [ext_resource type="AudioStream" uid="uid://njun3e6v4854" path="res://Assets/Sounds/hurt.wav" id="10_n1e64"]
 
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_ms3xg"]
+resource_local_to_scene = true
 shader = ExtResource("1_fx1w5")
 shader_parameter/color = Quaternion(1, 1, 1, 1)
 shader_parameter/intensity = 0.0
@@ -49,6 +50,7 @@ atlas = ExtResource("3_ocaae")
 region = Rect2(168, 0, 24, 24)
 
 [sub_resource type="SpriteFrames" id="SpriteFrames_6pejo"]
+resource_local_to_scene = true
 animations = [{
 "frames": [{
 "duration": 1.0,
@@ -177,7 +179,6 @@ shape = SubResource("RectangleShape2D_8lxmf")
 [node name="Inventory" type="Node2D" parent="."]
 y_sort_enabled = true
 script = ExtResource("7_43gq8")
-Items = [null]
 
 [node name="Sword" parent="Inventory" instance=ExtResource("8_s3c8r")]
 Knockback = 100.0

Characters/Player.tscn

@@ -203,6 +203,7 @@ horizontal_alignment = 1
 y_sort_enabled = true
 position = Vector2(0, 4)
 script = ExtResource("7_xyenu")
+Items = Array[Node2D]([])
 InventoryMap = {
 "equip_1": 0,
 "equip_2": 1

Items/Inventory.cs

@@ -9,7 +9,7 @@ namespace SupaLidlGame.Items
         public Character Character { get; private set; }
 
         [Export]
-        public Array<Item> Items { get; private set; } = new Array<Item>();
+        public Array<Item> Items { get; private set; }
 
         [Export]
         public Dictionary<string, int> InventoryMap { get; set; }
@@ -43,6 +43,26 @@ namespace SupaLidlGame.Items
             InventoryMap.Add("equip_3", 2);
         }
 
+        public override void _Ready()
+        {
+            if (Items is null)
+            {
+                // instantiating a new array will prevent characters from
+                // sharing inventories
+                Items = new Array<Item>();
+            }
+            Character = GetParent<Character>();
+            foreach (Node child in GetChildren())
+            {
+                if (child is Item item)
+                {
+                    GD.Print("Adding item " + item.Name);
+                    AddItem(item);
+                }
+            }
+            base._Ready();
+        }
+
         private bool EquipItem(Item item, ref Item slot)
         {
             if (item is not null)
@@ -122,19 +142,5 @@ namespace SupaLidlGame.Items
             var e = SelectedItem = item;
             throw new System.NotImplementedException();
         }
-
-        public override void _Ready()
-        {
-            Character = GetParent<Character>();
-            foreach (Node child in GetChildren())
-            {
-                if (child is Item item)
-                {
-                    GD.Print("Adding item " + item.Name);
-                    AddItem(item);
-                }
-            }
-            base._Ready();
-        }
     }
 }