diff --git a/snake-game/src/domain.rs b/snake-game/src/domain.rs
index a1c1269..2ae2e37 100644
--- a/snake-game/src/domain.rs
+++ b/snake-game/src/domain.rs
@@ -117,23 +117,3 @@ pub struct Inert(pub Direction);
 /// Путь змеи
 #[derive(Resource, Default, Debug, Deref, DerefMut)]
 pub struct SnakePath(HashMap<Position, Direction>);
-
-#[cfg(test)]
-mod test {
-    use crate::domain::*;
-
-    use std::collections::HashMap;
-
-    #[test]
-    fn test_snake_path() {
-        let mut snake_path = SnakePath(HashMap::default());
-        snake_path.push(&Transform::default(), Direction::default());
-        assert_eq!(snake_path.0.len(), 1);
-
-        assert!(snake_path.pick(&Transform::default()) == Some((Position::default(), Direction::default())));
-        assert_eq!(snake_path.0.len(), 1);
-
-        assert!(snake_path.drop(&Transform::default()) == Some((Position::default(), Direction::default())));
-        assert_eq!(snake_path.0.len(), 0);
-    }
-}
diff --git a/snake-game/src/lib.rs b/snake-game/src/lib.rs
index 3603f77..27967f2 100644
--- a/snake-game/src/lib.rs
+++ b/snake-game/src/lib.rs
@@ -5,6 +5,6 @@ mod observers;
 mod startup;
 mod tools;
 
-pub use gameplay::{head_rotation, moving};
+pub use gameplay::{head_rotation, snake_moving};
 pub use startup::startup;
 pub use tools::define_log_layer;
diff --git a/snake-game/src/main.rs b/snake-game/src/main.rs
index 6e97d16..aa3d6f5 100644
--- a/snake-game/src/main.rs
+++ b/snake-game/src/main.rs
@@ -1,5 +1,5 @@
 use bevy::prelude::*;
-use snake_game::{head_rotation, moving, startup};
+use snake_game::{head_rotation, snake_moving, startup};
 
 fn main() {
     App::new()
@@ -20,7 +20,7 @@ fn main() {
         .add_systems(Startup, (startup,))
         // .add_systems(PostStartup, snake_game::debug::print_all_entities)
         .add_systems(Update, (head_rotation,))
-        .add_systems(FixedUpdate, (moving,))
+        .add_systems(FixedUpdate, (snake_moving,))
         .add_systems(
             PostUpdate,
             (
diff --git a/snake-game/src/observers.rs b/snake-game/src/observers.rs
index 1c9e33a..37046f8 100644
--- a/snake-game/src/observers.rs
+++ b/snake-game/src/observers.rs
@@ -8,10 +8,12 @@ pub fn tail_observer(event: On<GridBarier>, mut query: Query<(&mut Direction, &T
     let entity = event.entity;
     if event.observer() == entity {
         if let Ok((mut direction, transform)) = query.get_mut(event.entity) {
+            /*
             if let Some((position, new_direction)) = snake_path.pick(transform) {
                 trace!("change direction for {entity:?} in {position:?} to {new_direction:?}");
                 *direction = new_direction;
             }
+            */
         }
     }
 }
@@ -23,10 +25,12 @@ pub fn cleanup_snake_path(event: On<GridBarier>, mut commands: Commands, query:
         let transform = transform.clone();
         commands.queue(move |world: &mut World| {
             let mut snake_path = world.resource_mut::<SnakePath>();
+            /*
             if let Some((pos, dir)) = snake_path.drop(&transform) {
                 let map = snake_path.debug();
                 trace!("removed entry from SnakePath: {pos:?} => {dir:?}\n\tsnake_path: {map:?}");
             }
+            */
         });
     }
 }
@@ -35,10 +39,12 @@ pub fn cleanup_snake_path(event: On<GridBarier>, mut commands: Commands, query:
 pub fn schedule_set_velocity(tail: Entity) -> impl Fn(On<GridBarier>, Commands, Query<(&mut Velocity, &Transform)>) {
     move |event: On<GridBarier>, mut commands: Commands, mut query: Query<(&mut Velocity, &Transform)>| {
         if let Ok((mut velocity, transform)) = query.get_mut(tail) {
+            /*
             if event.dst_pos != transform.into() {
                 velocity.0 = SNAKE_VELOCITY as f32;
                 commands.entity(event.observer()).despawn();
             }
+            */
         }
     }
 }
diff --git a/snake-game/src/startup.rs b/snake-game/src/startup.rs
index 5c9bba0..aef3734 100644
--- a/snake-game/src/startup.rs
+++ b/snake-game/src/startup.rs
@@ -1,7 +1,7 @@
 use bevy::prelude::*;
 
 use crate::{
-    domain::{End, GridBarier, SnakePath, Tail},
+    domain::{End, SnakePath, Tail},
     observers::{cleanup_snake_path, schedule_set_velocity, tail_observer},
 };
 
@@ -20,12 +20,14 @@ fn spawn_snake(commands: &mut Commands) {
     commands.insert_resource(SnakePath::default());
     commands.spawn(Observer::new(cleanup_snake_path));
 
+    /*
     commands.spawn(Observer::new(|e: On<GridBarier>| {
         let entity = e.entity;
         let src = e.src_pos;
         let dst = e.dst_pos;
         trace!("...<{entity:?}> moving {src:>16} => {dst:>16}");
     }));
+    */
 
     let head = commands
         .spawn((
diff --git a/snake-game/tests/rust_learning.rs b/snake-game/tests/rust_learning.rs
index 76069ec..74cbecc 100644
--- a/snake-game/tests/rust_learning.rs
+++ b/snake-game/tests/rust_learning.rs
@@ -1,6 +1,6 @@
 use std::f32::consts::PI;
 
-use bevy::transform::components::Transform;
+use bevy::{math::Quat, transform::components::Transform};
 
 #[test]
 fn test_saturating_sub() {
@@ -50,6 +50,12 @@ fn test_ranges() {
 
 #[test]
 fn test_transform() {
-    dbg!(Transform::default());
-    dbg!(Transform::default().rotate_z(PI / 2.0));
+    let mut transform = Transform::default();
+    dbg!(transform);
+    transform.rotate_z(PI / 2.0);
+    transform.rotate_z(PI / 2.0);
+    transform.rotate_z(PI / 2.0);
+    transform.rotate_z(PI / 2.0);
+    dbg!(transform);
+    let mut quat = Quat::default();
 }