extends Node2D

var enemy = preload("res://enemy.tscn")
var player = preload("res://player.tscn")
var instance = null
var playing = false
var enemy_count: int = 0

@onready var start_button = $CanvasLayer/CenterContainer/Start
@onready var game_over = $CanvasLayer/CenterContainer/GameOver

func _ready():
    game_over.hide()
    start_button.show()
    EventBus.player_died.connect(_on_player_died)
    EventBus.enemy_died.connect(_on_enemy_died)


func spawn_enemies():

    for x in range(9):
      for y in range(3):
            var e = enemy.instantiate()
            var pos = Vector2(x * (16 + 8) + 24, 16 * 4 + y * 16)
            add_child(e)
            e.start(pos)
    enemy_count = get_tree().get_nodes_in_group("enemies").size()
    print(enemy_count)


func _on_enemy_died(value: int):
    Global.score += value
    enemy_count -= 1
    $CanvasLayer/UI.update_score(Global.score)
    print_debug(enemy_count)
    if enemy_count == 0:
        print("All enemies defeated!")
        win_game()

func _on_player_died():
    # get_tree().call_group("enemies", "queue_free")
    EventBus.enemy_win.emit()
    # $Player.set_process(false)
    instance.queue_free()
    game_over.show()
    await get_tree().create_timer(2).timeout
    game_over.hide()
    start_button.show()
    playing = false

func new_game():
    get_tree().call_group("enemies", "queue_free")
    # get_node("player").start()
    Global.score = 0
    instance = player.instantiate()
    add_child(instance)
    $Player.shader_active = false
    $Player.start()
    $CanvasLayer/UI.update_score(Global.score)
    spawn_enemies()
    playing = true


func _input(EventInput):
    if EventInput.is_action_pressed("shoot") and playing == false:
        print("Input detected!")
        start_button.hide()
        new_game()

func _on_start_pressed():
    start_button.hide()
    new_game()

func win_game():
    playing = false
    game_over.show()
    $Player._on_game_over()
    await get_tree().create_timer(2).timeout
    game_over.hide()
    start_button.show()