state_machine_1

extends KinematicBody

onready var Anim = $AnimatedSprite3D
var velocity = Vector3()
var is_walk = false
var current_state := 0
enum {WALK, ATTACK, IDLE}

var enter_state := true

func _physics_process(delta):
	match current_state:
		WALK:
			_walk_state(delta)
		ATTACK:
			_attack_state(delta)
		IDLE:
			_idle_state(delta)

# state functions

func _walk_state(_delta):
	Anim.play("walk")
	_move()

	_move_and_slide()
	_set_state(_check_walk_state())

func _attack_state(_delta):
	Anim.play("punch")
	velocity.x = 0
	_move_and_slide()

func _idle_state(_delta):
	Anim.play("idle")
	velocity.x = 0
	_move_and_slide()
	_set_state(_check_idle_state())

# check functions

func _check_idle_state():
	var new_state = current_state
	if Input.is_action_pressed("move_left") or Input.is_action_pressed("move_right"):
		new_state = WALK
	elif Input.is_action_just_pressed("punch"):
		new_state = ATTACK
	return new_state

func _check_walk_state():
	var new_state = current_state
	if Input.is_action_pressed("move_left") or Input.is_action_pressed("move_right"):
		new_state = WALK
	elif Input.is_action_just_pressed("punch"):
		new_state = ATTACK
	return new_state

# helpers

func _move_and_slide():
	velocity = move_and_slide(velocity, Vector3.UP)

func _move():
	if Input.is_action_pressed("move_left"):
		velocity.x = -100
		$AnimatedSprite3D.flip_h = true
	elif  Input.is_action_pressed("move_right"):
		velocity.x = 100
		$AnimatedSprite3D.flip_h = false
	else:
		velocity.x = 0
		Anim.play("idle")


func _set_state(new_state):
	if new_state != current_state:
		enter_state = true
	current_state = new_state


func _on_AnimatedSprite3D_animation_finished():
	var anim_name = $AnimatedSprite3D.animation
	if anim_name == "punch":
		_set_state(IDLE)