class_name Sleigh extends Node3D

static var instance: Sleigh
static var streak: int:
	get:
		return streak
	set(value):
		streak = value
		UI.instance.setStreak(streak)
static var score: int = 0

@onready var santa: Santa = $SleighModel/SantaModel
@onready var cam: CameraController = $Camera3D

@export var baseSpeed: float = 100
@export var maxSpeed: float = 500
@export var drag: float = 10

var speed: float

func _enter_tree():
	if (instance == null || !is_instance_valid(instance)):
		instance = self
	else:
		queue_free()

# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	speed = baseSpeed

# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta: float) -> void:
	if (!City.moving): return
	var distance: float = (speed * delta * Vector3.FORWARD).z
	position.z += distance
	if (is_instance_valid(City.instance)): City.instance.distance -= distance
	speed -= drag * delta
	speed = clampf(speed, baseSpeed, maxSpeed)

func _on_rudolph_entered(area: Area3D) -> void:
	if (area is SpeedRing):
		speed *= area.strength
	if (area.is_in_group("delivery") && City.controlling):
		City.moving = false
		var target: Vector3 = City.instance.deliveryHouse.get_node("Smoke").global_position
		santa.dive(target, 1)