extends "res://maps/map.gd"


const Lightning = preload("res://objects/gfx/lightning.tscn")


export var min_interval: float
export var max_interval: float
export var fade_time: float


onready var lightning_spawn: Node2D = $"%LightningSpawn"
onready var bright_sky: ColorRect = $"%BrightSky"
onready var lightning_timer: Timer = $"%LightningTimer"
onready var clouds: Sprite = $"%Clouds"


func _spawn_lightning():
	var bolt = Lightning.instance()
	bright_sky.modulate.a = 1.0
	clouds.modulate = Color(1.2, 1.2, 1.2)
	bolt.position.x = rand_range(-100.0, 100.0)
	bolt.fade_time = fade_time
	lightning_spawn.add_child(bolt)
	var tween = create_tween()
	tween.set_parallel(true)
	tween.tween_property(bright_sky, "modulate:a", 0.0, fade_time).set_trans(Tween.TRANS_EXPO)
	tween.tween_property(clouds, "modulate", Color.white, fade_time).set_trans(Tween.TRANS_EXPO)
	lightning_timer.start(rand_range(min_interval, max_interval))