extends Node2D

var preloaded_enemies := [
    preload("res://source/actors/Enemy.tscn"),
    preload("res://source/actors/Enemy.tscn")
]

onready var spawn_timer: = $SpawnTimer

var NextSpawnTime := 3.0  ##seconds between spawning enemies

func ready():
    randomize()
    spawn_timer.start(NextSpawnTime)

func _on_SpawnTimer_timeout() -> void:
    ## spawn an enemy
    var EnemyPreload = preloaded_enemies[randi() % preloaded_enemies.size()]
    var enemy = EnemyPreload.instance()
    enemy.position = Vector2(position.x, 100)
    get_tree().current_scene.add_child(enemy)
    ## restart the timer
    spawn_timer.start(NextSpawnTime)