extends Node2D

# #116: purely visual - a repair drone on its way out to a damaged structure
# or back to its workshop. Carries no state of its own; GameState owns the
# simulation and RepairDroneField creates, positions and frees this to match.

const VESSEL_DEFINITIONS = preload("res://vessels/VesselDefinitions.gd")
const HULL_COLOR: Color = Color(0.5, 0.95, 0.8)

var laden: bool = false


func _ready() -> void:
	add_to_group("repair_drones")
	# #91: behind the fleet, like every other piece of ground furniture.
	z_index = -1
	queue_redraw()


func set_laden(value: bool) -> void:
	if laden == value:
		return
	laden = value
	queue_redraw()


func _draw() -> void:
	# Small and blunt, with a tool arm out front, in the workshop's own
	# green-teal: it should read as a tender belonging to a building rather
	# than as a fleet vessel or a hub's magenta hauler.
	# From the DEFINITION, for the reason Transporter.gd records: #216 made
	# these fly out as ordinary deliveries, and a delivery draws the
	# definition's hull. Two copies meant two shapes for one vessel.
	NeonDraw.draw_glowing_polygon(self, _hull(), HULL_COLOR, 1.0)
	NeonDraw.draw_glowing_line(self, Vector2(0, -11), Vector2(0, -18), HULL_COLOR, 0.9, 0.35)
	NeonDraw.draw_glowing_line(self, Vector2(-5, -18), Vector2(5, -18), HULL_COLOR, 0.9, 0.35)
	if laden:
		# The load it is carrying out, in ore's own colour so it reads as
		# material rather than as a light on the hull.
		NeonDraw.draw_glowing_circle(self, Vector2(0, 3), 5.0,
			GameState.resource_color(GameState.RESOURCE_ORE), 1.0)


func _hull() -> PackedVector2Array:
	var definition: Resource = VESSEL_DEFINITIONS.get_definition(GameState.REPAIR_DRONE)
	return PackedVector2Array() if definition == null else definition.hull_points