extends CharacterBody3D
class_name NPC_interactable

@export var speed = 3.0
# set direction seperate for each npc instance
@export var direction := Vector3()
var turning = false
var tmp_dir : Vector3
var tmp_rotation : Vector3
var rot_y = 0
var facing_interacter = false
@export var prompt_message = ""
@export var dialogue = "res://Interact/dialogue/test_dialogue.dialogue"
@export var talkable = false
@export var dissapear_after_dialogoue = false
@export var game_balloon = "/game_balloons/game_balloon_v_2.tscn"
@export var alienID = 0
signal dialogue_finished

func _physics_process(delta: float) -> void:
	# move the character based on its set direction
	velocity.x = speed * direction.x
	velocity.z = speed * direction.z
	
	# Add the gravity.
	if not is_on_floor():
		velocity += get_gravity() * delta

	move_and_slide()
	
	if $RayCast3D.is_colliding() and not turning:
		turn_around()
		
	if $RayCast3D2.is_colliding() and not turning:
		turn_half()
		

func turn_around():
	turning = true
	var dir = direction
	var turn_tween = create_tween()
	turn_tween.tween_property(self, "rotation_degrees", Vector3(0, 180, 0), 0.6).as_relative()
	
	await get_tree().create_timer(0.6).timeout
	
	direction.x = dir.x * -1
	direction.z = dir.z * -1
	turning = false

func turn_half():
	turning = true
	var dir = direction
	var turn_tween = create_tween()
	turn_tween.tween_property(self, "rotation_degrees", Vector3(0, 90, 0), 0.6).as_relative()
	
	await get_tree().create_timer(0.6).timeout
	direction.x = dir.z
	direction.z = -dir.x
	turning = false
	
func stop_walking(body: Node3D):
	#stop moving
	if direction != Vector3.ZERO:
		tmp_dir = direction
	direction = Vector3.ZERO


func resume_walking():
	self.rotate(Vector3(0,1,0), deg_to_rad(-rot_y))
	print(rot_y)
	rot_y = 0
	facing_interacter = false
	direction.x = tmp_dir.x
	direction.z = tmp_dir.z

func turn_to_face_interacter(body: Node3D):
	if not facing_interacter:
		# turn to face player
		tmp_rotation = self.rotation_degrees
		var turn_tween = create_tween()
		rot_y = -(self.rotation_degrees.y - body.rotation_degrees.y)
		print(self.rotation_degrees.y, ' ', body.rotation_degrees.y, ' ', rot_y)
		turn_tween.tween_property(self, "rotation_degrees", Vector3(0, rot_y, 0), 0.2).as_relative()
		facing_interacter = true


func _on_interaction_checker_body_entered(body: Node3D) -> void:
	print(body.name + " is here")
	stop_walking(body)
#	if alienID == 99:
#		$helper.wave()


func _on_interaction_checker_body_exited(body: Node3D) -> void:
	print(body.name + " is gone, resume walking")
	resume_walking()
	if alienID == 99:
		$helper.play_idle()

		
func dialogue_ended() -> void:
	dialogue_finished.emit()
	DialogueState.setAlienFlag(alienID)
	if dissapear_after_dialogoue:
		print("disappear")
		if $CollisionShape3D:
			$CollisionShape3D.disabled = true
			
		await get_tree().create_timer(1.0).timeout
		queue_free()
	if alienID == 99:
		$helper.play_idle()