diff --git a/src/states/level/components.rs b/src/states/level/components.rs
index 733be10..2050aca 100644
--- a/src/states/level/components.rs
+++ b/src/states/level/components.rs
@@ -19,39 +19,6 @@ pub struct TrackPath {
     pub buffer_size: usize,
 }
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default)]
-pub enum BallType {
-    #[default]
-    First,
-    Second,
-    Third,
-    Forth,
-}
-
-impl BallType {
-    pub const fn asset_path(&self) -> &'static str {
-        match self {
-            BallType::First => "balls/1.png",
-            BallType::Second => "balls/2.png",
-            BallType::Third => "balls/3.png",
-            BallType::Forth => "balls/4.png",
-        }
-    }
-
-    pub fn random() -> Self {
-        [Self::First, Self::Second, Self::Third, Self::Forth]
-            .choose(&mut rand::rng())
-            .copied()
-            .unwrap_or_default()
-    }
-}
-
-#[derive(Component, Debug)]
-pub struct Ball {
-    pub ball_type: BallType,
-    pub slot_index: usize,
-    pub slot_progress: f32,
-}
 
 #[derive(Resource)]
 pub struct SpawnTimer {
@@ -90,12 +57,12 @@ pub struct WarmupTarget {
     pub target_index: usize,
 }
 
-#[derive(Component)]
-pub struct Cannon;
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Direction {
+    Left,
+    Right,
+    Top,
+    Bottom,
+}
+
 
-#[derive(Component)]
-pub struct BallProjectile {
-    pub velocity: Vec2,
-    pub previous_position: Vec2,
-    pub ball_type: BallType,
-}
\ No newline at end of file
diff --git a/src/states/level/components_ball.rs b/src/states/level/components_ball.rs
new file mode 100644
index 0000000..c5af0ed
--- /dev/null
+++ b/src/states/level/components_ball.rs
@@ -0,0 +1,36 @@
+use bevy::prelude::*;
+use rand::seq::IndexedRandom;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Default)]
+pub enum BallType {
+    #[default]
+    First,
+    Second,
+    Third,
+    Forth,
+}
+
+impl BallType {
+    pub const fn asset_path(&self) -> &'static str {
+        match self {
+            BallType::First => "balls/1.png",
+            BallType::Second => "balls/2.png",
+            BallType::Third => "balls/3.png",
+            BallType::Forth => "balls/4.png",
+        }
+    }
+
+    pub fn random() -> Self {
+        [Self::First, Self::Second, Self::Third, Self::Forth]
+            .choose(&mut rand::rng())
+            .copied()
+            .unwrap_or_default()
+    }
+}
+
+#[derive(Component, Debug)]
+pub struct Ball {
+    pub ball_type: BallType,
+    pub slot_index: usize,
+    pub slot_progress: f32,
+}
\ No newline at end of file
diff --git a/src/states/level/components_cannon.rs b/src/states/level/components_cannon.rs
new file mode 100644
index 0000000..fc40ee8
--- /dev/null
+++ b/src/states/level/components_cannon.rs
@@ -0,0 +1,54 @@
+use bevy::math::Vec2;
+use bevy::prelude::{Component, Resource};
+use crate::states::level::*;
+
+#[derive(Component)]
+pub struct Cannon;
+
+#[derive(Resource, Debug, Clone)]
+pub struct CannonState {
+    pub current_type: BallType,
+    pub next_type: BallType,
+}
+
+impl Default for CannonState {
+    fn default() -> Self {
+        Self {
+            current_type: BallType::random(),
+            next_type: BallType::random(),
+        }
+    }
+}
+
+impl CannonState {
+    pub fn fire(&mut self) {
+        self.current_type = self.next_type;
+        self.next_type = BallType::random();
+    }
+
+    pub fn cycle_next(&mut self) {
+        // self.next_type = match self.next_type {
+        //     BallType::First => BallType::Second,
+        //     BallType::Second => BallType::Third,
+        //     BallType::Third => BallType::Forth,
+        //     BallType::Forth => BallType::First,
+        // };
+        let cur = self.current_type;
+        self.current_type = self.next_type;
+        self.next_type = cur;
+        
+    }
+}
+
+#[derive(Component)]
+pub struct CurrentPreviewMarker;
+
+#[derive(Component)]
+pub struct NextPreviewMarker;
+
+#[derive(Component)]
+pub struct BallProjectile {
+    pub velocity: Vec2,
+    pub previous_position: Vec2,
+    pub ball_type: BallType,
+}
\ No newline at end of file
diff --git a/src/states/level/mod.rs b/src/states/level/mod.rs
index eb0e473..671aa49 100644
--- a/src/states/level/mod.rs
+++ b/src/states/level/mod.rs
@@ -1,8 +1,20 @@
 pub mod plugin;
-pub mod components;
-pub mod system;
-pub mod state;
-pub mod system_ball;
-pub mod system_cannon;
-pub mod system_track;
-pub mod system_grid;
\ No newline at end of file
+mod components;
+pub use components::*;
+mod system;
+pub use system::*;
+mod state;
+pub use state::*;
+mod system_ball;
+pub use system_ball::*;
+mod system_cannon;
+pub use system_cannon::*;
+mod system_track;
+pub use system_track::*;
+pub mod system_grid;
+pub use system_grid::*;
+
+mod components_cannon;
+pub use components_cannon::*;
+mod components_ball;
+pub use components_ball::*;
diff --git a/src/states/level/plugin.rs b/src/states/level/plugin.rs
index 5ef7031..8afb31b 100644
--- a/src/states/level/plugin.rs
+++ b/src/states/level/plugin.rs
@@ -1,10 +1,7 @@
 use crate::states::AppState::GameState;
-use crate::states::level::system_ball::*;
-use crate::states::level::system::*;
+use crate::states::level::*;
 use bevy::prelude::*;
-use crate::states::level::system_cannon::*;
-use crate::states::level::components::LevelMarker;
-use crate::states::level::system_track::{debug_draw_track};
+
 
 pub struct LevelPlugin;
 
@@ -23,8 +20,12 @@ impl Plugin for LevelPlugin {
                     spawn_new_ball,
                     move_queue_along_track,
                     check_wave_completion,
-                    rotate_cannon,
+                    //cannon systems
+                    cycle_cannon_type,
+                    update_cannon_preview,
                     spawn_projectile_from_cannon,
+                    //сохранять порядок верхних трех
+                    rotate_cannon,
                     move_projectiles,
                     detect_projectile_hit,
                 )
diff --git a/src/states/level/system.rs b/src/states/level/system.rs
index 74dd8e7..104f95b 100644
--- a/src/states/level/system.rs
+++ b/src/states/level/system.rs
@@ -1,10 +1,8 @@
-
-use crate::states::level::components::*;
+use crate::states::level::*;
 use crate::{FACTOR, HEIGHT, WIDTH};
 use bevy::prelude::*;
-use crate::states::level::system_track::setup_track_with_buffer;
 
-pub const SHIFT: f32 = 2.0;
+pub const SHIFT: f32 = 1.0;
 pub const SLOT_SIZE: f32 = FACTOR as f32 / SHIFT;
 
 pub fn setup_timer(mut commands: Commands){
@@ -13,6 +11,12 @@ pub fn setup_timer(mut commands: Commands){
 
 pub fn setup_level(mut commands: Commands){
     commands.insert_resource(setup_track_with_buffer());
+    println!("Track is set up");
+    
     commands.insert_resource(WaveState::default());
+    println!("WaveState is set up");
+
+    commands.insert_resource(build_cannon_state());
+    println!("CannonState is set up");
 }
 
diff --git a/src/states/level/system_ball.rs b/src/states/level/system_ball.rs
index c2908a3..0392caa 100644
--- a/src/states/level/system_ball.rs
+++ b/src/states/level/system_ball.rs
@@ -1,6 +1,5 @@
-use crate::states::level::components::{Ball, BallType, LevelMarker, TrackPath, WarmupTarget, WaveState};
-use crate::states::level::system::SLOT_SIZE;
 use bevy::prelude::*;
+use crate::states::level::*;
 
 pub fn spawn_new_ball(
     mut commands: Commands,
diff --git a/src/states/level/system_cannon.rs b/src/states/level/system_cannon.rs
index 40ed360..b63ed66 100644
--- a/src/states/level/system_cannon.rs
+++ b/src/states/level/system_cannon.rs
@@ -1,20 +1,23 @@
-use crate::states::level::components::{
-    Ball, BallProjectile, BallType, Cannon, LevelMarker, TrackPath, WaveState,
-};
-use crate::states::level::system::SLOT_SIZE;
 use bevy::prelude::*;
+use crate::states::level::*;
 use bevy::window::PrimaryWindow;
 
+const CANNON_Z_INDEX: f32 = 10.0;
+const PROJECTILE_Z_INDEX: f32 = 11.0;
+const CURRENT_SHOT_Z_INDEX: f32 = 12.0;
+const NEXT_SHOT_Z_INDEX: f32 = 12.0;
+
 pub fn setup_cannon(mut commands: Commands, asset_server: Res<AssetServer>) {
     let texture: Handle<Image> = asset_server.load("cannon/cannon.png");
 
     commands.spawn((
         LevelMarker,
         Cannon,
-        Transform::from_xyz(579.0 - (1280.0 / 2.0), (768.0 / 2.0) - 150.0, 1.0),
+        Transform::from_xyz(579.0 - (1280.0 / 2.0), (768.0 / 2.0) - 150.0, CANNON_Z_INDEX),
         Sprite::from_image(texture),
         Visibility::Visible,
     ));
+    println!("Cannon visuals is set up");
 }
 
 pub fn rotate_cannon(
@@ -54,6 +57,7 @@ pub fn spawn_projectile_from_cannon(
     cannon_query: Query<&Transform, With<Cannon>>,
     mouse_input: Res<ButtonInput<MouseButton>>,
     asset_server: Res<AssetServer>,
+    mut cannon_state: ResMut<CannonState>
 ) {
     if !mouse_input.just_pressed(MouseButton::Left) {
         return;
@@ -63,13 +67,13 @@ pub fn spawn_projectile_from_cannon(
         return;
     };
 
-    let ball_type = BallType::First; // TODO: рандом/цикл
+    let ball_type = cannon_state.current_type;
     let image = asset_server.load(ball_type.asset_path());
 
     let offset = 100.0; // сдвиг от центра к дулу пушки
     let direction = cannon_tf.rotation.mul_vec3(Vec3::Y).truncate().normalize();
     let spawn_pos_2d = cannon_tf.translation.truncate() + direction * offset;
-    let spawn_pos = spawn_pos_2d.extend(10.0); // z=10, чтобы было поверх трека
+    let spawn_pos = spawn_pos_2d.extend(PROJECTILE_Z_INDEX);
 
     commands.spawn((
         LevelMarker,
@@ -86,6 +90,7 @@ pub fn spawn_projectile_from_cannon(
             ball_type,
         },
     ));
+    cannon_state.fire();
 }
 
 pub fn move_projectiles(
@@ -97,7 +102,7 @@ pub fn move_projectiles(
         // Обновляем позицию
         let delta = proj.velocity * time.delta_secs();
         let new_pos = proj.previous_position + delta;
-        
+
         transform.translation = new_pos.extend(transform.translation.z);
         proj.previous_position = new_pos;
 
@@ -147,14 +152,14 @@ pub fn detect_projectile_hit(
             target_progress = target_ball.slot_progress;
 
             // Определяем индекс вставки
-            insert_idx = if target_progress <= 0.5 {
-                nearest_idx_any
+            insert_idx = if target_progress <= 0.5 { //TODO check correction
+                nearest_idx_any - 1
             } else {
-                nearest_idx_any + 1
+                nearest_idx_any
             };
         } else {
             // Слот пуст — снаряд пролетает мимо
-            commands.entity(proj_entity).despawn();
+            // commands.entity(proj_entity).despawn();
             continue;
         }
 
@@ -163,8 +168,8 @@ pub fn detect_projectile_hit(
         // сдвигаем очередь
         let max_idx = track.points.len() - 1;
         let mut to_despawn = Vec::new();
-        
-        
+
+
         for (entity, mut ball) in balls.iter_mut() {
             if ball.slot_index >= insert_idx {
                 if ball.slot_index < max_idx {
@@ -174,11 +179,11 @@ pub fn detect_projectile_hit(
                 };
             }
         }
-        
+
         for entity in to_despawn {
             commands.entity(entity).despawn();
         }
-        
+
         commands.entity(proj_entity).insert({
             Ball {
                 ball_type: proj.ball_type,
@@ -191,3 +196,68 @@ pub fn detect_projectile_hit(
     // Разблокировка (структурные изменения завершены)
     wave.is_queue_locked = false;
 }
+
+pub fn cycle_cannon_type(
+    mut cannon_state: ResMut<CannonState>,
+    mouse_input: Res<ButtonInput<MouseButton>>,
+) {
+    if mouse_input.just_pressed(MouseButton::Right) {
+        cannon_state.cycle_next();
+    }
+}
+
+pub fn update_cannon_preview(
+    mut commands: Commands,
+    cannon_state: Res<CannonState>,
+    asset_server: Res<AssetServer>,
+    cannon_query: Query<Entity, With<Cannon>>,
+    muzzle_query: Query<Entity, With<CurrentPreviewMarker>>,
+    next_query: Query<Entity, With<NextPreviewMarker>>,
+) {
+    let Ok(cannon_entity) = cannon_query.single() else { return };
+
+    let muzzle_image = asset_server.load(cannon_state.current_type.asset_path());
+
+    if let Ok(muzzle_entity) = muzzle_query.single() {
+        // усли шарик у дула есть, то обновляем спрайт
+        commands.entity(muzzle_entity).insert(Sprite::from_image(muzzle_image));
+    } else {
+        //иначе создаем
+        let preview_entity = commands.spawn((
+            CurrentPreviewMarker,
+            Sprite{
+                image: muzzle_image,
+                custom_size: Some(Vec2::splat(SLOT_SIZE)),
+                ..default()
+            },
+            Transform::from_xyz(0.0, 100.0, CURRENT_SHOT_Z_INDEX),
+            Visibility::Visible,
+        )).id();
+        commands.entity(cannon_entity).add_child(preview_entity);
+    }
+
+    let next_image = asset_server.load(cannon_state.next_type.asset_path());
+
+    if let Ok(next_entity) = next_query.single() {
+        commands.entity(next_entity).insert(Sprite::from_image(next_image));
+    } else {
+        let preview_entity = commands.spawn((
+            NextPreviewMarker,
+            Sprite{
+                image: next_image,
+                custom_size: Some(Vec2::splat(SLOT_SIZE)),
+                ..default()
+            },
+            Transform::from_xyz(0.0, -50.0, NEXT_SHOT_Z_INDEX),
+            Visibility::Visible,
+        )).id();
+        commands.entity(cannon_entity).add_child(preview_entity);
+    }
+}
+
+pub fn build_cannon_state() -> CannonState {
+    CannonState {
+        current_type: BallType::random(),
+        next_type: BallType::random(),
+    }
+}
diff --git a/src/states/level/system_grid.rs b/src/states/level/system_grid.rs
index efe105c..511c7c5 100644
--- a/src/states/level/system_grid.rs
+++ b/src/states/level/system_grid.rs
@@ -1,8 +1,7 @@
 use bevy::color::Color;
 use bevy::math::{Vec2, Vec3};
-use bevy::prelude::{default, Commands, Gizmos, Text2d, TextColor, TextFont, Transform};
-use crate::states::level::components::DebugSlotNumber;
-use crate::states::level::system::{SHIFT, SLOT_SIZE};
+use bevy::prelude::*;
+use crate::states::level::*;
 use crate::{HEIGHT, WIDTH};
 
 const GRID_COLS: f32 = WIDTH as f32 * SHIFT;
diff --git a/src/states/level/system_track.rs b/src/states/level/system_track.rs
index 889a409..68a4014 100644
--- a/src/states/level/system_track.rs
+++ b/src/states/level/system_track.rs
@@ -1,8 +1,7 @@
 use bevy::color::Color;
 use bevy::math::Vec2;
-use bevy::prelude::{Gizmos, Res};
-use crate::states::level::components::TrackPath;
-use crate::states::level::system::SLOT_SIZE;
+use bevy::prelude::*;
+use crate::states::level::*;
 
 const BUFFER_SLOTS: usize = 20;
 
@@ -35,8 +34,38 @@ pub fn setup_track_with_buffer() -> TrackPath {
     }
 }
 
+// for debug
 fn make_track() -> Vec<Vec2> {
-    vec![
+    make_track_80()
+}
+
+fn make_track_80() -> Vec<Vec2> {
+    // let track = generate_track_line(Vec2::new(-600.0, -80.0), Vec2::new(600.0, -80.0), Direction::Right);
+    
+    let track: Vec<Vec2> = vec![
+        Vec2::new(-600.0, -80.0),  
+        Vec2::new(-520.0, -80.0),  
+        Vec2::new(-440.0, -80.0),  
+        Vec2::new(-360.0, -80.0),  
+        Vec2::new(-280.0, -80.0),  
+        Vec2::new(-200.0, -80.0),  
+        Vec2::new(-120.0, -80.0),  
+        Vec2::new(-40.0, -80.0),  
+        Vec2::new(40.0, -80.0),  
+        Vec2::new(120.0, -80.0),  
+        Vec2::new(200.0, -80.0),  
+        Vec2::new(280.0, -80.0),  
+        Vec2::new(360.0, -80.0),  
+        Vec2::new(440.0, -80.0),  
+        Vec2::new(520.0, -80.0),  
+        Vec2::new(600.0, -80.0),  
+    ];
+    
+    track
+}
+
+fn make_track_40() -> Vec<Vec2> {
+    let mut track = vec![
         //спавн точка за видимой областью
         // Vec2::new(-660.0, -140.0),
         Vec2::new(-620.0, -140.0),
@@ -72,7 +101,8 @@ fn make_track() -> Vec<Vec2> {
         Vec2::new(300.0, 140.0),
         Vec2::new(340.0, 140.0),
         Vec2::new(380.0, 140.0),
-    ]
+    ];
+    track
 }
 
 
@@ -86,17 +116,30 @@ pub fn debug_draw_track(mut gizmos: Gizmos, track: Res<TrackPath>) {
     }
 }
 
-// fn generate_track(mut commands: Commands) {
-//     let half_w = crate::states::level::system::GRID_COLS as f32 * SLOT_SIZE / 2.0;
-//     let half_h = crate::states::level::system::GRID_ROWS as f32 * SLOT_SIZE / 2.0;
-// 
-//     let mut points = Vec::with_capacity(crate::states::level::system::GRID_COLS as usize);
-// 
-//     for col in (0..crate::states::level::system::GRID_COLS as u32).rev() {
-//         let x = -half_w + col as f32 * SLOT_SIZE + SLOT_SIZE / 2.0;
-//         let y = 0.0;
-//         points.push(Vec2::new(x, y));
-//     }
-// 
-//     commands.insert_resource(TrackPath { points, spawn_index: 0, buffer_size: 0 });
-// }
\ No newline at end of file
+fn generate_track_line(start: Vec2, end: Vec2, direction: Direction) -> Vec<Vec2> {
+    //генерируем только точки между началом и концом
+    let mut result = vec![end];
+    
+    let step = match direction {
+        Direction::Left   => Vec2::new(-SLOT_SIZE, 0.0),
+        Direction::Right  => Vec2::new( SLOT_SIZE, 0.0),
+        Direction::Top    => Vec2::new(0.0,  SLOT_SIZE),
+        Direction::Bottom => Vec2::new(0.0, -SLOT_SIZE),
+    };
+
+    let steps = match direction {
+        Direction::Left | Direction::Right => {
+            ((end.x - start.x).abs() / SLOT_SIZE) as usize
+        }
+        Direction::Top | Direction::Bottom => {
+            ((end.y - start.y).abs() / SLOT_SIZE) as usize
+        }
+    };
+
+    for i in 0..=steps {
+        let pos = start + step * i as f32;
+        result.push(pos);
+    }
+    
+    result
+}
\ No newline at end of file