Platform #2 - Refactored movement with _input method

extends KinematicBody2D

var input_direction = 0
var direction = 1

var speed = 0
const MAX_SPEED = 800
const ACCELERATION = 2000
const DECELERATION = 8000
var velocity = 0

func _ready():
    set_process(true)
    set_process_input(true)


func _input(event):
    var move_left = event.is_action_pressed("move_left")
    var move_right = event.is_action_pressed("move_right")
    var stop_moving = not (Input.is_action_pressed("move_right") or Input.is_action_pressed("move_left"))

    if move_left:
        input_direction = -1
    elif move_right:
        input_direction = 1
    elif stop_moving:
        input_direction = 0

    if move_left or move_right and input_direction:
        if input_direction == -1 * direction:
            speed /= 3
            direction = input_direction


func _process(delta):
    if input_direction:
        speed += ACCELERATION * delta
    else:
        speed -= DECELERATION * delta
    speed = clamp(speed, 0, MAX_SPEED)

    velocity = speed * delta * direction
    move(Vector2(velocity, 0))