Godot 3.5 - Follow Mouse Position

extends KinematicBody2D

export var speed = 200
var velocity = Vector2()
var mouse_position = null

func _physics_process(delta):

    # Reset the player's velocity
    velocity = Vector2(0, 0)
    mouse_position = get_global_mouse_position()

    # This input will need to be created in the input map
    if Input.is_action_pressed("forward"):
        var direction = (mouse_position - position).normalized()
        velocity = (direction * speed)

    move_and_slide(velocity)
    look_at(mouse_position)