godot 4 controller

@onready var head = $head
@onready var cam = $head/Camera3D


var accel = 6
var SPEED = 5.0
var JUMP_VELOCITY = 4.5
var crouched = false #определяет приседает игрок или нет
var input_dir = Vector3(0,0,0) #направление нажатия кнопок
var direction = Vector3() # направление игрок
var sens = 0.005
var gravity = ProjectSettings.get_setting("physics/3d/default_gravity")

func _ready():
    Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)

func _input(event: InputEvent): #повороты мышкой
    if Input.is_action_just_pressed("ui_cancel"):
        Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
    if Input.get_mouse_mode() == Input.MOUSE_MODE_CAPTURED:
        if event is InputEventMouseMotion:
            head.rotate_y(-event.relative.x * sens)
            cam.rotate_x(-event.relative.y * sens)
            cam.rotation.x = clamp(cam.rotation.x,deg_to_rad(-89),deg_to_rad(89))

func _physics_process(delta):
    if Input.is_action_pressed("+crouch"): #приседание
        crouched = true
        SPEED = 2.5
        $CollisionShape3D.scale.y = lerp($CollisionShape3D.scale.y,0.4,0.4)
        $CollisionShape3D.position.y = lerp($CollisionShape3D.position.y, 0.66,0.4)
        head.position.y = lerp(head.position.y, 1.0, 0.3)
    else:
        crouched = false
        SPEED = 5
        $CollisionShape3D.scale.y = lerp($CollisionShape3D.scale.y, 1.0 ,0.4)
        $CollisionShape3D.position.y = lerp($CollisionShape3D.position.y, 1.143,0.4)
        head.position.y = lerp(head.position.y, 1.85 , 0.3)

    if not is_on_floor(): #гравитация
        velocity.y -= gravity * delta

    if Input.is_action_just_pressed("ui_accept") and is_on_floor() and crouched == false: # прыжок
        velocity.y = JUMP_VELOCITY

    if is_on_floor() and Input.is_action_pressed("+shift"):
        SPEED = 10
    else:
        SPEED = 5
    ################################################хождение туда сюда
    input_dir = Input.get_vector("+a", "+d", "+w", "+s")
    direction = ($head.transform.basis * Vector3(input_dir.x, 0, input_dir.y)).normalized()

    velocity.x = lerp(velocity.x ,direction.x * SPEED, accel * delta)
    velocity.z = lerp(velocity.z ,direction.z * SPEED, accel * delta)
    move_and_slide()
    ###################################################--