Bullet hit rock detection

Scenes/TestBullet.tscn

@@ -19,8 +19,8 @@ Cooldown = 0.5
 _projectileSpeed = 15.0
 
 [node name="RigidBody3D" type="RigidBody3D" parent="."]
-collision_layer = 2
-collision_mask = 0
+collision_layer = 18
+collision_mask = 16
 gravity_scale = 0.0
 custom_integrator = true
 continuous_cd = true
@@ -41,3 +41,5 @@ shape = SubResource("SphereShape3D_rokeu")
 pixel_size = 0.05
 axis = 1
 texture = ExtResource("2_n5c16")
+
+[connection signal="body_entered" from="RigidBody3D" to="." method="OnBulletHitObject"]