class_name NPC extends CharacterBody3D

enum InteractType {
	NONE,
	TEXTBOX,
	CUTSCENE
}

# Movement speed in units per second
@export var gravity: float = 24.8
@export var interactType:InteractType = InteractType.NONE
@export_multiline var interactTexts:Array[String] = []
@export var cutscene:Cutscene = null
var nextTextIndex:int = 0

func _enter_tree() -> void:
	$InteractableArea.interactEvent.connect(_on_interact)

func _exit_tree() -> void:
	$InteractableArea.interactEvent.disconnect(_on_interact)
	UI.TEXTBOX.textboxClosing.disconnect(onTextboxClosing)

func _physics_process(delta):
	# Apply gravity if not on floor
	if !is_on_floor():
		velocity += PHYSICS.GRAVITY * delta

	move_and_slide()

func _on_interact() -> void:
	nextTextIndex = 0
	match interactType:
		InteractType.TEXTBOX:
			if interactTexts.size() == 0:
				return
			UI.TEXTBOX.setText(interactTexts[nextTextIndex])
			UI.TEXTBOX.textboxClosing.connect(onTextboxClosing)
			return

		InteractType.CUTSCENE:
			if cutscene:
				cutscene.start()
			return
		_:
			return


func onTextboxClosing() -> void:
	nextTextIndex += 1
	if nextTextIndex < interactTexts.size():
		UI.TEXTBOX.setText(interactTexts[nextTextIndex])
	else:
		UI.TEXTBOX.textboxClosing.disconnect(onTextboxClosing)