extends Spatial

const TIME_MAX = 3000 # msec
const GYROSCOPE_MAX_DIFF = 0.5
const OFFSET_CAMERA_MAX = 0.12
const OFFSET_STEP_CHANGE = 0.01
const RAY_LENGTH = 1000

onready var gyroscope_value_old = Vector3(0, 0, 0)
onready var table = Global.database.get_table_by_name("scenes")
onready var meshes = {}
onready var from = null
onready var to = null
onready var mscene = load("res://db/MScene.gd")

func _ready():
	_load_translations()
	_load_meshes()

func _process(_delta):
	_check_dissolve_mesh()
	_check_change_angle_camera()

func _check_dissolve_mesh():
	# Event dissolve in object searched by gamer
	for key in meshes:
		if meshes[key].lock() == true and meshes[key].mesh() != null:
			if meshes[key].tick_reference() == 0:
				meshes[key].set_tick_reference(OS.get_ticks_msec())

			if OS.get_ticks_msec() < meshes[key].tick_reference() + TIME_MAX:
				meshes[key].set_value(meshes[key].value() + 0.01)
				_node_to_mesh(key).get_surface_material(0).set("shader_param/dissolve_amount", meshes[key].value())
			else:
				_node_to_mesh(key).call_deferred("free")
				meshes[key].set_mesh(null)

func _node_to_mesh(key):
	return get_node(meshes[key].mesh())
	
func _node_to_area(key):
	return get_node(meshes[key].mesh()+"/Area")

func _check_change_angle_camera():
	var camera = $"Main Camera"
	var gyroscope = Input.get_gyroscope()
	
	if camera.h_offset >= -OFFSET_CAMERA_MAX:
		if _action_pressed("ui_left") or _action_gyroscope("left", gyroscope):
			print("[warcraft#_ready] move camera angle to left")
			$"Main Camera".h_offset -= OFFSET_STEP_CHANGE
	
	if camera.h_offset <= OFFSET_CAMERA_MAX:
		if _action_pressed("ui_right") or _action_gyroscope("right", gyroscope):
			print("[warcraft#_ready] move camera angle to right")
			$"Main Camera".h_offset += OFFSET_STEP_CHANGE
	
	if camera.v_offset >= -OFFSET_CAMERA_MAX:
		if _action_pressed("ui_down") or _action_gyroscope("down", gyroscope):
			print("[warcraft#_ready] move camera angle to down")
			$"Main Camera".v_offset -= OFFSET_STEP_CHANGE
	
	if camera.v_offset <= OFFSET_CAMERA_MAX:
		if _action_pressed("ui_up") or _action_gyroscope("up", gyroscope):
			print("[warcraft#_ready] move camera angle to up")
			$"Main Camera".v_offset += OFFSET_STEP_CHANGE
	
	gyroscope_value_old = gyroscope

func _action_pressed(action):
	return Input.is_action_pressed(action)

func _action_gyroscope(action, gyroscope):
	if Global.gyroscope_enabled():
		var expression = Expression.new()
		
		expression.parse("_gyroscope_changed_"+action+"(gyroscope)", ["gyroscope"])
		
		if expression.execute([gyroscope], self):
			return true
		else:
			return false
	else:
		return false

func _gyroscope_changed_left(gyroscope):
	return (gyroscope.abs().y - gyroscope_value_old.abs().y) > GYROSCOPE_MAX_DIFF and \
			gyroscope.y < gyroscope_value_old.y

func _gyroscope_changed_right(gyroscope):
	return (gyroscope.abs().y - gyroscope_value_old.abs().y) > GYROSCOPE_MAX_DIFF and \
			gyroscope.y > gyroscope_value_old.y

func _gyroscope_changed_down(gyroscope):
	return (gyroscope.abs().z - gyroscope_value_old.abs().z) > GYROSCOPE_MAX_DIFF and \
			gyroscope.z > gyroscope_value_old.z or \
		   (gyroscope.abs().x - gyroscope_value_old.abs().x) > GYROSCOPE_MAX_DIFF and \
			gyroscope.x > gyroscope_value_old.x

func _gyroscope_changed_up(gyroscope):
	return (gyroscope.abs().z - gyroscope_value_old.abs().z) > GYROSCOPE_MAX_DIFF and \
			gyroscope.z < gyroscope_value_old.z or \
		   (gyroscope.abs().x - gyroscope_value_old.abs().x) > GYROSCOPE_MAX_DIFF and \
			gyroscope.x < gyroscope_value_old.x

func _start_dissolve(key):
	if meshes[key].lock() == false:
		meshes[key].set_lock(true)

## PRIVATE
func _load_translations():
	pass

func _load_meshes():
	var scene_detail = null
	
	for row_index in range(0, table.m_rows_count):
		scene_detail = mscene.new(row_index)
		
		if scene_detail.key() != null:
			meshes[scene_detail.key()] = scene_detail
			# _display_label(scene_detail)

	for key in meshes:
		meshes[key].search_keys()
"""
func _display_label(scene):
	print("[meshes#key] : "+scene.label())
	$ListObjects/ListContainer/TextureButton.set_text(scene.label())
"""
func _input(event):
	if event is InputEventMouseButton or event is InputEventScreenTouch:
		var camera = $"Main Camera"
		from = camera.project_ray_origin(event.position)
		to = from + camera.project_ray_normal(event.position) * RAY_LENGTH

func _physics_process(_delta):
	var space_state = get_world().direct_space_state
	if from != null and to != null:
		var result = space_state.intersect_ray(from, to, [], 1, false, true)
		from = null
		to = null
		if result.has("collider"):
			var node = result["collider"].get_parent()
			if node != null:
				_start_dissolve(node.name)