extends Spatial

signal menu_options_pressed

var animation_object:AnimationPlayer = null
var rotation_speed_factor = 0.01
var orientation = 0.0
var direction = Vector3.ZERO
var velocity: = Vector3.ZERO
var rotatex = 0.0
var move_run: bool = false
var move_toggle_run: bool = false
export var gravity = -9.0

enum ACTION {
	idle,
	walk,
	run,
	scan,
	teleport,
}

var current_action = ACTION.idle

func search_animation( obj ) -> bool:
	var ret:bool = false
	for i in obj.get_children():
		if i.get_name() == "AnimationPlayer":
			animation_object = i
			return true
		else:
			ret = search_animation(i)
			if ret == true:
				return ret
	return false

# Called when the node enters the scene tree for the first time.

func _ready():
	match Globals.player['Race']:
		"arche":
			self.change_creature( "res://scenes/player/creature_raference.tscn" )
		"isidor":
			self.change_creature( "res://scenes/player/creature_raference.tscn" )
		"raference":
			self.change_creature( "res://scenes/player/creature_raference.tscn" )
		_:
			self.change_creature( "res://scenes/player/creature_raference.tscn" )
	# search_animation($character)
	# Globals.player['blend_shape']
	update_blend_shapes($creature, Globals.player['blend_shape'])
	current_action = ACTION.idle
	var idlename = "idle"
	if $creature.has_method("get_animation_idle"):
		idlename = $creature.get_animation_idle()
	self.rotation_speed_factor = $creature.rotation_speed_factor
	animation_object.play( idlename )
	animation_object.connect("animation_finished", self, "_on_AnimationPlayer_animation_finished")


func update_animation(action, anim_name):
	# Change animation if we need
	if current_action != action:
		current_action = action
		animation_object.play( anim_name )


func _on_AnimationPlayer_animation_finished(anim_name):
	Config.msg_debug( "{" + self.name + "} Animation finished:" + anim_name)
	animation_object.play( anim_name )


func change_creature( new_model_path ):
	if $creature:
		var old_model = $creature
		self.remove_child( old_model )
		old_model.queue_free()
		self.animation_object = null
	var new_model = load( new_model_path )
	if new_model:
		new_model = new_model.instance()
		new_model.name = "creature"
		self.add_child( new_model )
		#new_model.connect( "animation_finished", self, "_on_creature_animation_finished" )
		# new_model.duplicate_meshes()
		search_animation( new_model )


func update_blend_shapes( obj , param):
	#blend_shapes = {}
	update_blend_shapes_step(obj, param, "")
	pass


func update_blend_shapes_step( obj, param, father = "" ):
	for i in obj.get_children():
		var root = father + str(i.name) + "."
		if i is MeshInstance:
			for key in i.get_property_list():
				if key.name.substr(0, 13) == "blend_shapes/":
					var blend = key.name.substr(13)
					if param.has(blend):
						i.set( "blend_shapes/"+blend, param[blend] )
		update_blend_shapes_step( i, param, root)


static func get_input_direction() -> Vector3:
	return Vector3(
				Input.get_action_strength("move_strafe_right") - Input.get_action_strength("move_strafe_left"),
				0,
				Input.get_action_strength("move_backward") - Input.get_action_strength("move_forward")
			)


func _process( delta ):
	#Config.msg_info( "B:" + str(Input.get_action_strength("move_backward")) + " F:" + str(Input.get_action_strength("move_forward") ))
	# $character.direction = self.get_input_direction()
	#self.direction = self.get_input_direction()
	#self.direction = self.get_input_direction()
	$creature.rotate_y( self.rotation_speed_factor * self.orientation )

	var input_direction: = self.get_input_direction()
		
	var forwards: Vector3 = $creature/camera_tps.global_transform.basis.z * input_direction.z
	var right: Vector3 = $creature/camera_tps.global_transform.basis.x * input_direction.x
	var move_direction: = forwards + right
	if move_direction.length() > 1.0:
		move_direction = move_direction.normalized()

	var step_move
	if (self.move_toggle_run or Input.get_action_strength("move_run")) and input_direction.z < 0.0:
		self.move_run = true
		step_move = $creature.run_speed
	else:
		self.move_run = false
		step_move = $creature.move_speed

	move_direction = step_move * move_direction
	move_direction.y = 0
	
	# Movement
	velocity = self.calculate_velocity(velocity, move_direction, delta)
	velocity = $creature.move_and_slide(velocity, Vector3.UP, true)
	var pos : Vector3 = $creature.get_global_transform().origin
	#Config.msg_info("pos X:" + str(pos.x) + " Y:" + str(pos.y) + " Z:" + str(pos.z) + " run:" + str(Input.get_action_strength("move_run")) + str(Input.get_action_strength("move_toggle_run")) )
	if input_direction:
		if not input_direction.z == 0.0:
			if input_direction.z < 0.0:
				if self.move_run:
					update_animation( ACTION.run, $creature.animation_run )
				else:
					update_animation( ACTION.walk, $creature.animation_walk )
			else:
				update_animation( ACTION.idle, $creature.get_animation_idle() )
		elif input_direction.x > 0.0:
			# $model/ra/model/AnimationPlayer.play( "strafe_right" )
			update_animation( ACTION.idle, $creature.get_animation_idle() )
		elif input_direction.x < 0.0:
			# $model/ra/model/AnimationPlayer.play( "strafe_left" )
			update_animation( ACTION.idle, $creature.get_animation_idle() )
		else:
			update_animation( ACTION.idle, $creature.get_animation_idle() )
	else:
		# $model/ra/model/AnimationPlayer.play( "idle" )
		update_animation( ACTION.idle, $creature.get_animation_idle() )
		pass

func calculate_velocity(
		velocity_current: Vector3,
		move_direction: Vector3,
		delta: float
	) -> Vector3:
		var velocity_new = Vector3.ZERO
		velocity_new = move_direction
		
		velocity_new *= $creature.move_speed
		if velocity_new.length() > $creature.max_speed:
			velocity_new = velocity_new.normalized() * $creature.max_speed
		velocity_new.y = velocity_current.y + gravity * delta
		return velocity_new


func _input( event ):
	# Config.msg_debug(str(event))
	self.direction = self.get_input_direction()
	if not Input.is_key_pressed( KEY_SHIFT ):
		self.orientation = (Input.get_action_strength("move_turn_left") - Input.get_action_strength("move_turn_right"))
	else:
		self.orientation = 0.0
	if event is InputEventMouseMotion and Input.is_mouse_button_pressed( 2 ):
		# self.rotate_y( event.relative.x *0.01 )
		$creature.rotate_y( event.relative.x *0.01 )
		if $creature/camera_fps.current:
			# On FPS - we can move head to see up or down
			var current = $creature/camera_fps.get_rotation()
			# Config.msg_info("X:" + str(current.x) + " v:" + str(event.relative.y))
			if (event.relative.y > 0.0 and current.x > -1.4) or (event.relative.y < 0.0 and current.x < 1.4) :
				var sum = event.relative.y *0.01
				rotatex += sum
				$creature/camera_fps.rotate_x( sum )
	elif event.is_action_pressed("move_toggle_run"):
		self.move_toggle_run = ! self.move_toggle_run
	elif event.is_action_pressed( "camera_switch" ):
		if $creature/camera_tps.current:
			# Reset angle X for camera
			$creature/camera_fps.rotate_x( - rotatex )
			rotatex = 0.0
			$creature/camera_fps.make_current()
		else:
			$creature/camera_tps.make_current()
	elif event.is_action_pressed("menu"):
		#get_tree().quit()
		Config.msg_info("Received menu options")
		emit_signal("menu_options_pressed")