extends Node2D


const SlotClass = preload("res:///Objects/Slot.gd")
var Panzer_Temp = preload("res://Objects/Panzer.tscn")
onready var game_slots = $VBoxContainer/PanzerSlots
onready var overlay_node = find_node("Overlay")
var score_file = "user://highscore_2048Shooter.save"
var holding_item = null
var buy_panzer_left = 0
var life = 100
var hover = null
onready var start_panzer = 1
var rng = RandomNumberGenerator.new()
var holding_time = 0

signal speed_shoot

func _ready():
	#Input.set_mouse_mode(Input.MOUSE_MODE_HIDDEN)
	var node = String("Slot ")
	node += rng.randi_range(1, 8) as String
	node = find_node(node)
	node.start_panzer += 1;
	$Panel/Area2D/LifeBar.value = life
	overlay_node.connect("score", self, "update_life_bar")
	for gam_slot in game_slots.get_children():
		gam_slot.connect("gui_input", self, "slot_gui_input", [gam_slot])
	var pBars = get_tree().get_nodes_in_group("XP")
	for pBar in pBars:
		pBar.connect("full_bar", self, "_enable_Panzer")	

func _process(delta):
	if $Panel/Area2D/LifeBar.value == 0:
		save_score()
		get_tree().change_scene("res://Main Scenes/GameOver.tscn")
	if holding_item != null:
		holding_time += delta
		
func slot_gui_input(event: InputEvent, slot: SlotClass):
#	if OS.get_name() != "Android":
#		if event is InputEventMouseButton:
#			if event.button_index == BUTTON_LEFT && event.pressed:
#				_Panzer_Slot_handler(event, slot)
#	else:
		if event is InputEventScreenTouch:
			if event.pressed: 
				_Panzer_Slot_handler_touch(event, slot)
				if holding_item != null and holding_time > 0.2:
					#double click action
#					holding_item.old_slot.putIntoSlot(holding_item)
#					holding_item.old_slot.upgradePanzerInSlot()
#					holding_item = null
#					holding_time = 0
					pass
			else:
				if holding_item != null and hover == null and holding_item.old_slot != null:
					holding_item.old_slot.putIntoSlot(holding_item)
					holding_item = null
				elif holding_item != null and hover != null:
					drag_drop_handle(hover)
				else:
					pass
			pass
			
				
func _input(event):
	if event is InputEventScreenDrag:
		if holding_item:
			holding_item.global_position = get_global_mouse_position()
	pass


func _on_Panzer_pressed():
	if holding_item == null:
		buy_panzer_left -= 1
		if buy_panzer_left == 0:
			$VBoxContainer/ButtonGrid/Panzer.disabled = true
		var Panzer = null
		Panzer = Panzer_Temp.instance()
		add_child(Panzer)
		holding_item = Panzer
		holding_item.global_position = get_global_mouse_position()
	pass # Replace with function body.


func _on_Speed_pressed():
	var value = 0.5
	emit_signal("speed_shoot", value)
	$VBoxContainer/ButtonGrid/Speed.disabled = true
	pass # Replace with function body.
	
func _enable_Panzer(value):
	buy_panzer_left += 1
	$VBoxContainer/ButtonGrid/Panzer.disabled = false
	
func update_life_bar():
	var lifebar = find_node("LifeBar")
	lifebar.value = lifebar.max_value
	pass


func _on_Bullet_Grave_area_entered(area):
	if area.is_in_group("Bullet"):
		var Bullet = area.get_parent()
		Bullet.queue_free()
	pass # Replace with function body.
	
func _Panzer_Slot_handler(event: InputEvent, slot: SlotClass):
	if holding_item != null:
		if!slot.Panzer:
			slot.putIntoSlot(holding_item)
			holding_item = null
		elif slot.Panzer and holding_item.PanzerType == slot.Panzer.PanzerType:
			slot.upgradePanzerInSlot()
			holding_item.queue_free()
			holding_item = null
		else:
			print("yes")
#			var temp_item = slot.Panzer
#			slot.pickFromSlot()
#			temp_item.global_position = event.global_position
#			slot.putIntoSlot(holding_item)
#			holding_item = temp_item
			holding_item.old_slot.putIntoSlot(slot.Panzer)
			slot.Panzer.old_slot.putIntoSlot(holding_item)
	elif slot.Panzer:
		holding_item = slot.Panzer
		slot.pickFromSlot()
		holding_item.global_position = get_global_mouse_position()
		
func _Panzer_Slot_handler_touch(event: InputEvent, slot: SlotClass):
	if holding_item != null and holding_item.old_slot != slot:
		if!slot.Panzer:
			slot.putIntoSlot(holding_item)
			holding_item = null
		elif slot.Panzer and holding_item.PanzerType == slot.Panzer.PanzerType:
			slot.upgradePanzerInSlot()
			holding_item.queue_free()
			holding_item = null
		elif holding_item.old_slot != slot:
			pass
	elif slot.Panzer and holding_item == null:
		holding_item = slot.Panzer
		slot.pickFromSlot()
		holding_item.global_position = get_global_mouse_position()

func drag_drop_handle(hover):	
	if!hover.Panzer:
		hover.putIntoSlot(holding_item)
		holding_item = null
	elif hover.Panzer and holding_item.PanzerType == hover.Panzer.PanzerType:
		hover.upgradePanzerInSlot()
		holding_item.queue_free()
		holding_item = null
	elif holding_item.old_slot != null:
		var temp = hover.Panzer
		var temp2 = holding_item
		hover.pickFromSlot()
		hover.putIntoSlot(holding_item)
		temp2.old_slot.putIntoSlot(temp)
		holding_item = null
	elif holding_item.old_slot == null:
		var temp = hover.Panzer
		var temp2 = holding_item
		hover.pickFromSlot()
		hover.putIntoSlot(holding_item)
		holding_item = temp
		holding_item.global_position = get_global_mouse_position()
		holding_item.old_slot = null
	
func save_score():
	var highscoreNode = find_node("Score")
	var f = File.new()
	if f.file_exists(score_file):
		f.open(score_file, File.READ)
		if (f.get_var() as int) > 0:
			f.close()
			f.open(score_file,File.WRITE)
			f.store_var(highscoreNode.text)
			f.close()
	Globals.score = highscoreNode.text