Starting item and inventory tools, sketched spear animation templates.

scripts/item_slot.gd

@@ -7,14 +7,25 @@ var item : Item
 @onready var item_sprite : TextureRect = $Item
 
 func assign(itm : Item) -> void:
-	item = item
-	item_sprite.texture = item.image
+	item = itm
+	if item.image != null:
+		item_sprite.texture = item.image
 
 func swap(item_slot : ItemSlot) -> void:
 	var itm = item
 	assign(itm)
 	item_slot.assign(itm)
 
+func update(itm : Item) -> void:
+	if itm == null:
+		clear()
+	elif itm != item:
+		assign(itm)
+
+func clear() -> void:
+	item = null
+	item_sprite.texture = null
+
 func _on_gui_input(event: InputEvent) -> void:
 	var mmevt = event as InputEventMouseMotion
 	var mbevt = event as InputEventMouseButton