extends Line2D

var _time := 0.0
var radiation_beam := false

func _ready() -> void:
	# Draw the beam in layers instead of a flat line. No bloom is required.
	default_color = Color.TRANSPARENT
	width = 0.0

func _process(delta: float) -> void:
	_time += delta
	if visible:
		queue_redraw()

func _draw() -> void:
	if points.size() < 2:
		return
	var pulse := 0.88 + sin(_time * 65.0) * 0.12
	var tint := Color(0.25,1,0.16) if radiation_beam else Color(0.3,0.92,1)
	for i in points.size()-1:
		var start := points[i]
		var end := points[i+1]
		draw_line(start,end,Color(tint,0.09*pulse),16,true)
		draw_line(start,end,Color(tint,0.2*pulse),9,true)
		draw_line(start,end,Color(tint,0.7),3.8,true)
		draw_line(start,end,Color(tint.lightened(0.8),0.96),1.4,true)
	for point in points:
		draw_circle(point,9*pulse,Color(tint,0.12))
		draw_circle(point,4*pulse,Color(tint,0.6))
		draw_circle(point,1.8,tint.lightened(0.8))