extends Node2D

# Purely visual: an automated ore hauler running an extractor's route. It
# carries no state of its own - GameState owns the simulation and this node
# is created, positioned and freed to match it. See HaulerField.

const HULL_COLOR: Color = Color(0.55, 0.85, 0.4)

var laden: bool = false


func _ready() -> void:
	add_to_group("haulers")
	z_index = -1
	queue_redraw()


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


func _draw() -> void:
	# Blunt freighter silhouette - deliberately unlike the player's sharp
	# triangles, so it is obvious at a glance this is not a fleet vessel.
	var hull: PackedVector2Array = PackedVector2Array([
		Vector2(0, -20), Vector2(11, -6), Vector2(11, 16), Vector2(-11, 16), Vector2(-11, -6),
	])
	NeonDraw.draw_glowing_polygon(self, hull, HULL_COLOR, 1.0)
	if laden:
		# Ore in the hold on the outbound leg, so a glance tells you which
		# way it is going.
		var cargo: PackedVector2Array = PackedVector2Array()
		for i in range(6):
			var a: float = (float(i) / 6.0) * TAU - PI / 2.0
			cargo.append(Vector2(cos(a), sin(a)) * 6.0 + Vector2(0, 4))
		NeonDraw.draw_glowing_polygon(self, cargo, Color(0.0, 0.62, 0.7), 1.0)