extends Node3D
## Bahnhof: Bahnsteig, Gebaeude, Warteplaetze, Warenlager.

const Mat = preload("res://scripts/mat.gd")
const Deco = preload("res://scripts/deco.gd")
const Cargo = preload("res://scripts/cargo.gd")

const PLATFORM_LEN := 44.0
const PLATFORM_H := 0.95

var station_name := ""
var seg := 0
var progress := 0.0
var side := 1.0
var produces := -1
var accepts: Array[int] = []
var stock := 0.0
var max_stock := 30.0
var rate := 0.55
var waiting_spots: Array[Vector3] = []   ## Weltpositionen auf dem Bahnsteig
var waiting: Array = []                  ## wartende Passagiere

func setup(nm: String, seg_id: int, prog: float, prod: int, acc: Array[int]) -> void:
	station_name = nm
	seg = seg_id
	progress = prog
	produces = prod
	accepts = acc

func tick(delta: float) -> void:
	if produces >= 0:
		stock = minf(stock + rate * delta, max_stock)

func _box(parent: Node3D, center: Vector3, size: Vector3, color: Color) -> MeshInstance3D:
	var m := MeshInstance3D.new()
	m.mesh = Deco.box(size)
	m.material_override = Mat.flat(color)
	m.position = center
	parent.add_child(m)
	return m

func build_visuals(track_xf: Transform3D, s: float, wall: Color, roof: Color, chimney: bool) -> void:
	transform = track_xf
	side = s
	var edge := s * 2.4

	# Bahnsteig
	_box(self, Vector3(edge + s * 1.6, PLATFORM_H * 0.5, 0),
		Vector3(3.2, PLATFORM_H, PLATFORM_LEN), Color("cfc3a8"))
	_box(self, Vector3(edge + s * 0.06, PLATFORM_H - 0.04, 0),
		Vector3(0.35, 0.1, PLATFORM_LEN), Color("e8e0cc"))

	# Vordach
	for i in 3:
		var z := -PLATFORM_LEN * 0.22 + i * PLATFORM_LEN * 0.22
		_box(self, Vector3(edge + s * 4.1, PLATFORM_H + 1.75, z),
			Vector3(0.24, 3.5, 0.24), Color("6b5a45"))
	_box(self, Vector3(edge + s * 3.0, PLATFORM_H + 3.6, 0),
		Vector3(3.4, 0.22, PLATFORM_LEN * 0.5), roof)

	# Empfangsgebaeude
	var h := Deco.house(wall, roof, 11.0, 8.0, 4.6, chimney)
	h.position = Vector3(edge + s * 11.5, 0.0, -PLATFORM_LEN * 0.18)
	h.rotate_y(PI * 0.5 * -s)
	add_child(h)

	# Baenke
	for i in 3:
		var z := -PLATFORM_LEN * 0.25 + i * PLATFORM_LEN * 0.25
		_box(self, Vector3(edge + s * 2.5, PLATFORM_H + 0.28, z),
			Vector3(0.55, 0.12, 1.6), Color("8a6b4a"))
		_box(self, Vector3(edge + s * 2.75, PLATFORM_H + 0.6, z),
			Vector3(0.1, 0.55, 1.6), Color("8a6b4a"))

	# Namensschild
	var label := Label3D.new()
	label.text = station_name
	label.font_size = 64
	label.pixel_size = 0.014
	label.billboard = BaseMaterial3D.BILLBOARD_ENABLED
	label.outline_size = 18
	label.outline_modulate = Color(0, 0, 0, 0.7)
	label.position = Vector3(edge + s * 3.0, PLATFORM_H + 4.9, 0)
	add_child(label)

	# Warteplaetze auf dem Bahnsteig
	for i in 10:
		var lz := -PLATFORM_LEN * 0.34 + i * PLATFORM_LEN * 0.075
		var lx := edge + s * (1.1 + (0.9 if i % 2 == 0 else 0.0))
		waiting_spots.append(to_global(Vector3(lx, PLATFORM_H, lz)))