RigidBody2d on_body_entered not working

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1

Godot Version

4.3

Question

I have created a simple mockup of my problem below. When my two objects collide on_body_entered is not being called.

My RigidBody2D is set up like this:

extends RigidBody2D

func _ready() -> void:
	contact_monitor = true
	max_contacts_reported = 25
	
func _on_body_entered(body: Node) -> void:
	print(body, "hit me")

My CharacterBody2d is like this:

extends CharacterBody2D
var speed = 400

func _physics_process(delta: float) -> void:
	if Input.is_action_pressed("up"):
		velocity.y = -1
	if Input.is_action_pressed("down"):
		velocity.y = 1
	else:
		velocity.y = lerp(velocity.y, 0.0, 0.1)
	move_and_collide(velocity * speed * delta)

When I ‘drive’ the character into the RB it prints nothing but the two do collide. If I turn gravity to 1 on the rigid body and ‘drop’ it on the character it does sometimes print the character name. Am I missing something obvious?

2

I would like to add this in case anyone else has the same misconception. I was confusing ‘body entered’ and collision.

In this example the colliding body registers the hit and can call a method in the RB2D.

var collision = move_and_collide(velocity * delta)
if collision:
   var collider = collision.get_collider()
   if collider.has_method("hit"):
      collider.hit()