class_name EnergyBar
extends ProgressBar


func _ready() -> void:
	show_percentage = false
	_event_bus().connect("player_energy_changed", refresh)


func refresh(current: float, maximum: float) -> void:
	max_value = maxf(0.01, maximum)
	value = clampf(current, 0.0, maximum)


func _event_bus() -> Node:
	var root := get_tree().root
	var bus := root.get_node_or_null("EventBus")
	if bus == null:
		bus = load("res://autoload/event_bus.gd").new()
		bus.name = "EventBus"
		root.add_child(bus)
	return bus