Collision & detection

There are two ways to detect a collision, depending of the type of node you are using:

PhysicsBody2D

func _physics_process(delta):

move_and_slide()

var collision_count = get_slide_collision_count()

for i in collision_count:

var collision_info = get_slide_collision(i)

var collider = collision_info.get_collider()

if collider.has_method("take_damage"):

collider.take_damage(impact_damage)

died.emit()

queue_free()

Area2D

func _physics_process(delta):

global_position += Vector2(speed, 0) * delta

func _on_area_2d_body_entered(body):

if body.is_in_group("enemy"):

if body.has_method("take_damage"):

body.take_damage(damage)

queue_free()

Layers and Masks

Object A will collide to Object B is Object A's Mask value matches Object B's Layer value.

Groups