Extensive work on animations and partially functional level keys, new UI gears but needs rounding error correction. Particle preloader added.

scripts/level_keys_slot.gd

@@ -0,0 +1,7 @@
+class_name LevelKeysSlot extends TextureRect
+
+
+func reset() -> void:
+	#TODO: Make this reset their appearance and visibility
+	visible = false
+	pass