extends Node

var level_time = 5
var time = 0
var possess_dist = 256
var kill_gain = 2.0
var camera: Camera2D
var current_actor_possessed: Actor = null
var game_over = false
var won_level = true
var levels = null
var current_level = 0
var is_final = false
var waiting = false
var transition = false
var musics: Array

func _ready():
	self.time = self.level_time
	self.camera = Camera2D.new() 
	add_child(self.camera)
	
	self.musics = [
		preload("res://Assets/gameplay_0.ogg"),	
		preload("res://Assets/gameplay_1.ogg"),	
		preload("res://Assets/gameplay_2.ogg")
	]
	
	self.levels = [
		preload("res://Level/level_1.tscn"),
		preload("res://Level/level_2.tscn"),
		preload("res://Level/level_3.tscn"),
		preload("res://Level/level_4.tscn"),
		preload("res://Level/level_5.tscn"),
		preload("res://Level/level_6.tscn"),
		preload("res://Level/level_7.tscn"),
		preload("res://Level/final_level.tscn")
	]
	
func restart():
	self.game_over = false
	self.won_level = true
	self.current_level -= 1
	self.is_final = false
	self.time = self.level_time
	
func next_level():
	if self.won_level:
		self.won_level = false
		self.time = self.level_time
		var n = self.levels[self.current_level].instantiate()
		self.current_level += 1
		self.is_final = self.current_level >= self.levels.size()
		return n
	return null
	
func kill(new_actor):
	if new_actor:
		self.time += self.kill_gain
	self.current_actor_possessed = new_actor
	
func _process(delta):
	if self.won_level:
		return
		
	if self.game_over:
		return
		
	if self.current_actor_possessed:
		var dir = self.current_actor_possessed.position - self.camera.position
		var dist = dir.length_squared()
		
		if dir.length_squared() > 0:
			dir = dir.normalized()
		
		if dist < 8.0 * 8.0:
			self.camera.position = self.current_actor_possessed.position
		else:
			self.camera.position += dir * delta * 640
		
	if not self.is_final and time < 0 and not self.game_over:
		self.game_over = true
		if self.current_actor_possessed:
			self.current_actor_possessed.set_state(ActorDie.new(self.current_actor_possessed))
		else:
			get_tree().change_scene_to_file('res://GameOver/game_over.tscn')
	if not self.waiting:
		time -= delta