extends Node2D

var enemy: CharacterBody2D

func _ready() -> void:
	enemy = get_parent() as CharacterBody2D
	top_level = true
	z_index = 30
	light_mask = 4
	_update_position()

func _process(_delta: float) -> void:
	_update_position()
	queue_redraw()

func _update_position() -> void:
	global_position = enemy.global_position + Vector2(0, -enemy.get_visual_size() * 0.5 - 12.0)

func get_health_ratio() -> float:
	return clampf(enemy.hull / maxf(enemy.max_hull, 0.001), 0.0, 1.0)

func _draw() -> void:
	if not is_instance_valid(enemy) or enemy.hull <= 0.0:
		return
	var width := 72.0 if enemy.loot_tier == 2 else 44.0
	var background := Rect2(-width * 0.5, -3.0, width, 6.0)
	draw_rect(background.grow(1.0), Color("08111dee"))
	draw_rect(background, Color("39232bee"))
	var color := Color("ffac46") if enemy.loot_tier == 2 else Color("ef5967")
	draw_rect(Rect2(background.position, Vector2(width * get_health_ratio(), 6.0)), color)