Finish moving away from the QuickSlots singleton

autoloads/inventory_manager.gd

@@ -1,7 +1,16 @@
 extends Node
 
-# QuickSlot related signals
 signal next_quick_slot
 signal previous_quick_slot
 signal select_quick_slot(slot_index: int)
 signal quick_slot_item_changed(item_id: String)
+
+var quick_slot_item_id: String = "001"
+
+
+func _ready() -> void:
+	self.quick_slot_item_changed.connect(_on_quick_slot_item_changed.bind())
+
+
+func _on_quick_slot_item_changed(item_id: String) -> void:
+	quick_slot_item_id = item_id

scenes/player/ray_cast_3d.gd

@@ -10,7 +10,7 @@ func _process(_delta: float) -> void:
 				(collider as Block).interact_left_click()
 			if Input.is_action_just_pressed("right_click_interact"):
 				EntityManager.create_block.emit(
-					QuickSlots.ref.get_selected_item(),
+					InventoryManager.quick_slot_item_id,
 					collider.position + get_collision_normal()
 				)
 

scenes/ui/quick_slots.gd

@@ -1,24 +1,15 @@
 class_name QuickSlots
 extends Node
 
-#region Singleton
-static var ref: QuickSlots
 
-func _init() -> void:
-	if not ref:
-		ref = self
-	else:
-		queue_free()
+var _items: Array[String] = ["001", "002", "003", "004"]
+var _selected_item: int = 0
 
+
+func _init() -> void:
 	InventoryManager.next_quick_slot.connect(select_next_item.bind())
 	InventoryManager.previous_quick_slot.connect(select_previous_item.bind())
 	InventoryManager.select_quick_slot.connect(select_item_index.bind())
-#endregion
-
-
-var _items: Array[String] = ["001", "002", "003", "004"]
-var _selected_item: int = 0
-
 
 func _unhandled_input(event: InputEvent) -> void:
 	if event.is_action_pressed("quickslot0"):