Godot 2D Char Movement with Run

extends KinematicBody2D


export var speed = 200.0
export var run_speed = 300.0

var rad_up = 0
var rad_down = PI
var rad_right = (PI*3)/2
var rad_left = PI/2



func process_movement(delta):
    var motion = Vector2(0,0)

    if Input.is_action_pressed("move_up"):
        motion += Vector2(0, -1)
        motion = motion.normalized() * speed * delta
        set_rot(rad_up)

    if Input.is_action_pressed("move_down"):
        motion += Vector2(0, 1)
        motion = motion.normalized() * speed * delta
        set_rot(rad_down)

    if Input.is_action_pressed("move_right"):
        motion += Vector2(1, 0)
        motion = motion.normalized() * speed * delta
        set_rot(rad_right)

    if Input.is_action_pressed("move_left"):
        motion += Vector2(-1, 0)
        motion = motion.normalized() * speed * delta
        set_rot(rad_left)

    if Input.is_action_pressed("run_up"):
        motion += Vector2(0, -1)
        motion = motion.normalized() * run_speed * delta
        set_rot(rad_up)

    if Input.is_action_pressed("run_down"):
        motion += Vector2(0, 1)
        motion = motion.normalized() * run_speed * delta
        set_rot(rad_down)

    if Input.is_action_pressed("run_right"):
        motion += Vector2(1, 0)
        motion = motion.normalized() * run_speed * delta
        set_rot(rad_right)

    if Input.is_action_pressed("run_left"):
        motion += Vector2(-1, 0)
        motion = motion.normalized() * run_speed * delta
        set_rot(rad_left)


    move(motion)

func _ready():
    set_fixed_process(true)

func _fixed_process(delta):
    process_movement(delta)