make projectiles get destroyed when colliding with player

scripts/projectiles/projectile.gd

@@ -1,5 +1,5 @@
 class_name Projectile
-extends AnimatableBody3D
+extends Area3D
 
 const HEIGHT: float = 1
 
@@ -19,6 +19,7 @@ func _ready() -> void:
 	_debug_collision_shapes.init(get_children(), self, _collision_debug_material)
 	global_position = _start_position
 	global_position.y = HEIGHT
+	body_entered.connect(_on_body_entered)
 
 
 func _physics_process(delta: float) -> void:
@@ -37,3 +38,10 @@ func init(velocity: Vector3, start_position: Vector3, lifetime: float = 10) -> v
 
 func set_velocity(velocity: Vector3) -> void:
 	_velocity = velocity
+
+
+func _on_body_entered(node: Node3D) -> void:
+	if node is not Player:
+		return
+
+	queue_free()