class_name StateComponent
extends Node

enum State {
	None,
	Idle,
	Run,
	Jump,
	Fall,
	Skill,
}

signal transitioned(from: State, to: State)

var movement: MovementComponent
var _current: State

func _ready():
	current = State.Idle
	movement = owner.find_child("Movement")

func _process(_delta):
	if current == State.Skill:
		return
	
	current = next_state()

func next_state() -> State:
	if movement.body.velocity.y > 0:
		return State.Jump
	elif movement.body.velocity.y < 0:
		return State.Fall
	elif movement.direction != Vector3.ZERO:
		return State.Run
	else:
		return State.Idle

## Current character state getter and setter.
var current: State:
	get:
		return _current
	set(new_state):
		if _current == new_state:
			return
		
		var old_state := _current
		_current = new_state
		transitioned.emit(old_state, new_state)