conforms file names to consistant standard

ui/hot_wheel_ui/hot_wheel.gd

@@ -0,0 +1,39 @@
+class_name HotWheel
+extends HBoxContainer
+
+@export var buttons: Array[Button]
+
+
+func update_cassettes(cassettes: Array[Cassette]) -> void:
+	var entry_count: int = cassettes.size()
+	buttons[0].visible = true
+	buttons[1].visible = true
+	buttons[2].visible = true
+	buttons[3].visible = true
+	buttons[4].visible = true
+	if entry_count < 1:
+		buttons[0].visible = false
+		buttons[1].visible = false
+		buttons[2].visible = false
+		buttons[3].visible = false
+		buttons[4].visible = false
+	elif entry_count < 2:
+		buttons[0].visible = false
+		buttons[1].visible = false
+		buttons[3].visible = false
+		buttons[4].visible = false
+	elif entry_count < 4:
+		buttons[0].visible = false
+		buttons[4].visible = false
+	if entry_count >= 1:
+		buttons[2].icon = cassettes[0].icon
+	if entry_count >= 2:
+		buttons[1].icon = cassettes[1].icon
+		buttons[3].icon = cassettes[1].icon
+	if entry_count >= 3:
+		buttons[3].icon = cassettes[2].icon
+	if entry_count >= 4:
+		buttons[0].icon = cassettes[3].icon
+		buttons[4].icon = cassettes[3].icon
+	if entry_count >= 5:
+		buttons[4].icon = cassettes[4].icon