class_name ChimneyGame extends Node3D

static var instance: ChimneyGame

@onready var santa: Santa = $SantaModel
@onready var spotScene: PackedScene = preload("res://Scenes/StuckSpot.tscn")

@export var cam: Camera3D
@export var maxStucks: int = 20
@export var minStucks: int = 10
@export var spawnChance: float = 1
@export var maxSpawnlessTime: float = 0.4

var spots: int
var spawned: int
var cleared: int
var tween: Tween
var targetHeight: float

func _enter_tree():
	if (is_instance_valid(instance) && instance != null): 
		queue_free()
		return
	instance = self

func startGame() -> void:
	spots = 0
	spawned = 0
	cleared = 0
	targetHeight = 0
	santa.animator.play("Idle")
	spots = randi_range(minStucks, maxStucks)
	spawnSpot()

func spawnSpot() -> void:
	if (spawned == spots): return
	var spot: StuckSpot = spotScene.instantiate()
	var pos: Vector2 = Vector2(santa.position.x + randf_range(-1, 1), santa.position.z + randf_range(-1, 1)).normalized()
	if (pos.x < -0.7):
		pos.x += 0.3
		if (pos.y >= 0): pos.y += 2
		else: pos.y -= 2
	if (pos.x > 0.7):
		pos.x -= 0.3
		if (pos.y >= 0): pos.y += 2
		else: pos.y -= 2
	pos = pos.normalized()
	spot.clicked.connect(unstickSpot)
	spot.position = Vector3(pos.x / 2.5, santa.position.y + 0.5, pos.y / 2.5)
	add_child(spot)
	spawned += 1

func unstickSpot() -> void:
	targetHeight -= 2.0 / spots
	if (tween): tween.kill()
	tween = get_tree().create_tween()
	tween.finished.connect(spawnSpot)
	tween.tween_property(santa, "position:y", targetHeight, 0.15)
	cleared += 1
	if (cleared == spots):
		Sleigh.score += Sleigh.streak + 1
		santa.animator.play("roll")
		City.instance.animator.play("fadeOut")
		await City.instance.animator.animation_finished
		cam.clear_current()
		UI.instance.showMost()
		City.instance.animator.play_backwards("fadeOut")
		City.moving = true
		City.delivered = true
		santa.animator.play("roll", -1, -10, true)
		santa.position = Vector3(0, 0, 0)