GDScript Code Generator: Magnet Node

Here's a GDScript implementation for a magnet node in Godot, with a complexity level of 5:

extends Area2D

class_name MagnetNode

export var attraction_force: float = 500.0
export var attraction_radius: float = 200.0
export var attract_groups: Array = ["Attractable"]

var attracted_bodies: Array = []

func _ready():
    collision_shape = CollisionShape2D.new()
    var circle_shape = CircleShape2D.new()
    circle_shape.radius = attraction_radius
    collision_shape.shape = circle_shape
    add_child(collision_shape)
    
    connect("body_entered", self, "_on_body_entered")
    connect("body_exited", self, "_on_body_exited")

func _physics_process(delta):
    for body in attracted_bodies:
        if is_instance_valid(body) and body is RigidBody2D:
            var direction = global_position - body.global_position
            var distance = direction.length()
            var force = direction.normalized() * (attraction_force / (distance * distance))
            body.apply_central_impulse(force * delta)

func _on_body_entered(body):
    for group in attract_groups:
        if body.is_in_group(group):
            attracted_bodies.append(body)
            break

func _on_body_exited(body):
    attracted_bodies.erase(body)

func set_attraction_radius(new_radius: float):
    attraction_radius = new_radius
    if collision_shape and collision_shape.shape:
        collision_shape.shape.radius = new_radius

func toggle_magnet(enabled: bool):
    set_physics_process(enabled)
    collision_shape.disabled = not enabled