extends Control
class_name ReloadRing

## The reload arc, drawn around the reticle.
##
## Like Crosshair it owns the full rect and centres itself in `size` rather than
## sitting at a zero-sized PRESET_CENTER: a control that draws before the
## viewport has sized it lands in the top-left corner, and only a later redraw
## moves it — which, for something that redraws on a value change, can be never.

var progress: float = 0.0:
	set(val):
		var v := clampf(val, 0.0, 1.0)
		if is_equal_approx(v, progress):
			return
		progress = v
		queue_redraw()

var radius: float = 16.0
var thickness: float = 4.0
var color: Color = Color(1.0, 1.0, 1.0, 0.8)


func _ready() -> void:
	mouse_filter = Control.MOUSE_FILTER_IGNORE
	# Offsets too — see the note in ui/crosshair.gd.
	set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)
	resized.connect(queue_redraw)


func _draw() -> void:
	if progress <= 0.0 or progress >= 1.0:
		return
	var mid := size * 0.5

	# Ink track first, wider than the arc, so the ring reads over a bright
	# skybox the same way every other element in this UI does. The old version
	# used 40% black, which vanished against pale concrete.
	draw_arc(mid, radius, 0, TAU, 48, UITheme.INK, thickness + 4.0, true)
	draw_arc(mid, radius, 0, TAU, 48, UITheme.INK_SOFT, thickness, true)

	# The charged part, sweeping from twelve o'clock.
	draw_arc(mid, radius, -PI / 2.0, -PI / 2.0 + TAU * progress, 48, color,
		thickness, true)