diff --git a/space-crush-app/src/constants.rs b/space-crush-app/src/constants.rs
index 627664d..12b9f9e 100644
--- a/space-crush-app/src/constants.rs
+++ b/space-crush-app/src/constants.rs
@@ -4,6 +4,10 @@ use lazy_static::lazy_static;
 pub const UNIFORM_BUFFER_INDEX_CAMERA: gl::GLuint = 0;
 pub const UNIFORM_BUFFER_INDEX_UNIFORM: gl::GLuint = 1;
 
+pub const SHIP_SIZE: f32 = 15.0;
+pub const PLANET_SIZE: f32 = 200.0;
+pub const ASTEROID_SIZE: f32 = 100.0;
+
 lazy_static! {
     pub static ref PLAYER_COLOR_DEFAULT: Vector4f = Vector4f::new(1.0, 1.0, 1.0, 0.1);
 }
diff --git a/space-crush-app/src/debug/summary.rs b/space-crush-app/src/debug/summary.rs
index 1fddddc..93ab5a8 100644
--- a/space-crush-app/src/debug/summary.rs
+++ b/space-crush-app/src/debug/summary.rs
@@ -5,7 +5,7 @@ use specs::{prelude::*, Entities, ReadExpect, System};
 
 use crate::{
     misc::{Text, TextCache, TextManager},
-    resources::State,
+    resources::InputState,
     Error,
 };
 
@@ -55,7 +55,7 @@ impl Summary {
 pub struct SummaryData<'a> {
     entities: Entities<'a>,
     global: ReadExpect<'a, Global>,
-    state: ReadExpect<'a, State>,
+    input_state: ReadExpect<'a, InputState>,
 }
 
 impl<'a> System<'a> for Summary {
@@ -65,7 +65,7 @@ impl<'a> System<'a> for Summary {
         let SummaryData {
             entities,
             global,
-            state,
+            input_state,
         } = data;
 
         let entity_count = entities.par_join().count();
@@ -82,14 +82,14 @@ impl<'a> System<'a> for Summary {
             &mut self.text,
             4,
             &mut self.resolution,
-            &state.resolution,
+            &input_state.resolution,
             |(w, h)| format!("{} | {}", w, h),
         );
         update_text(
             &mut self.text,
             6,
             &mut self.mouse_pos,
-            &state.mouse_pos,
+            &input_state.mouse_pos,
             |(x, y)| format!("{:.2} | {:.2}", x, y),
         );
         update_text(
diff --git a/space-crush-app/src/lib.rs b/space-crush-app/src/lib.rs
index a9e4ff3..6f95af3 100644
--- a/space-crush-app/src/lib.rs
+++ b/space-crush-app/src/lib.rs
@@ -14,7 +14,7 @@ pub use error::Error;
 use debug::{Fleets as DebugFleets, Ships as DebugShips, Summary as DebugSummary};
 use misc::{Events, TextManager, Window};
 use render::{Asteroids, Init, Planets, Ships};
-use resources::{Camera, Config, Geometry, PlayerState, State, Uniform};
+use resources::{Camera, Config, Geometry, InputState, PlayerState, Uniform};
 use systems::{FleetInfoUpdate, StateUpdate};
 
 pub struct App<'a, 'b> {
@@ -30,24 +30,24 @@ impl<'a, 'b> App<'a, 'b> {
         let events = Events::new(world)?;
         let window = Window::new(events.handle(), &config)?;
 
-        let state = State::default();
         let camera = Camera::new()?;
         let uniform = Uniform::new()?;
         let geometry = Geometry::new(world)?;
+        let input_state = InputState::default();
         let player_state = PlayerState::new(player_id);
 
-        world.insert(state);
         world.insert(config);
         world.insert(camera);
         world.insert(uniform);
         world.insert(geometry);
+        world.insert(input_state);
         world.insert(player_state);
 
         let text_manager = TextManager::new(world)?;
 
         let mut dispatcher = DispatcherBuilder::new()
             .with(StateUpdate::new(world)?, "state_update", &[])
-            .with(FleetInfoUpdate::new(world)?, "fleet_info_update", &[])
+            .with(FleetInfoUpdate::new(world), "fleet_info_update", &[])
             .with_thread_local(Init::new(world)?)
             .with_thread_local(Planets::new(world)?)
             .with_thread_local(Asteroids::new(world)?)
@@ -76,7 +76,7 @@ impl<'a, 'b> App<'a, 'b> {
 
         self.window.swap_buffers()?;
 
-        self.is_running = !world.fetch::<State>().close_requested;
+        self.is_running = !world.fetch::<InputState>().close_requested;
 
         Ok(())
     }
diff --git a/space-crush-app/src/main.rs b/space-crush-app/src/main.rs
index 5f1c94a..6096ac4 100644
--- a/space-crush-app/src/main.rs
+++ b/space-crush-app/src/main.rs
@@ -60,8 +60,8 @@ fn create_world(world: &mut World, player_id: Entity) {
     use space_crush_app::components::FleetInfo;
     use space_crush_common::{
         components::{
-            Asteroid, AsteroidType, Fleet, FleetOwned, Planet, Player, PlayerOwned, Position, Ship,
-            ShipType, Velocity,
+            Asteroid, AsteroidType, Fleet, FleetOwned, Planet, Player, PlayerOwned, Position,
+            Shape, Ship, ShipType, Velocity,
         },
         misc::{PersistWorld, Persistence},
     };
@@ -84,7 +84,7 @@ fn create_world(world: &mut World, player_id: Entity) {
         .marked::<<PersistWorld as Persistence>::Marker>()
         .with(Position {
             pos: Vector2f::new(500.0, -500.0),
-            size: 100.0,
+            shape: Shape::Circle(100.0),
         })
         .with(Fleet {
             orbit_min: 125.0,
@@ -101,7 +101,7 @@ fn create_world(world: &mut World, player_id: Entity) {
         .marked::<<PersistWorld as Persistence>::Marker>()
         .with(Position {
             pos: Vector2f::new(500.0, 500.0),
-            size: 100.0,
+            shape: Shape::Circle(100.0),
         })
         .with(Fleet {
             orbit_min: 125.0,
@@ -119,7 +119,7 @@ fn create_world(world: &mut World, player_id: Entity) {
         .with(PlayerOwned { owner: player_id })
         .with(Position {
             pos: Vector2f::default(),
-            size: 250.0,
+            shape: Shape::Circle(250.0),
         })
         .with(Fleet {
             orbit_min: 325.0,
@@ -139,7 +139,7 @@ fn create_world(world: &mut World, player_id: Entity) {
                     500.0 * random::<f32>() - 250.0,
                     500.0 * random::<f32>() - 250.0,
                 ),
-                size: 15.0,
+                shape: Shape::Dot,
             })
             .with(Velocity {
                 dir: Vector2f::new(random::<f32>() - 0.5, random::<f32>() - 0.5).normalize(),
diff --git a/space-crush-app/src/render/asteroids.rs b/space-crush-app/src/render/asteroids.rs
index 465e6db..a03473f 100644
--- a/space-crush-app/src/render/asteroids.rs
+++ b/space-crush-app/src/render/asteroids.rs
@@ -12,7 +12,10 @@ use space_crush_common::{
 use specs::{prelude::*, ReadExpect, ReadStorage, System, World};
 
 use crate::{
-    constants::{PLAYER_COLOR_DEFAULT, UNIFORM_BUFFER_INDEX_CAMERA, UNIFORM_BUFFER_INDEX_UNIFORM},
+    constants::{
+        ASTEROID_SIZE, PLAYER_COLOR_DEFAULT, UNIFORM_BUFFER_INDEX_CAMERA,
+        UNIFORM_BUFFER_INDEX_UNIFORM,
+    },
     misc::WorldHelper,
     resources::Geometry,
     Error,
@@ -85,7 +88,7 @@ impl<'a> System<'a> for Asteroids {
         for (position, asteroid, owned) in (&position, &asteroid, owned.maybe()).join() {
             let p_x = position.pos.x;
             let p_y = position.pos.y;
-            let s = position.size;
+            let s = position.shape.circle().unwrap_or(ASTEROID_SIZE);
 
             let _guard = match asteroid.type_ {
                 AsteroidType::Metal => BindGuard::new(&self.texture_metal),
diff --git a/space-crush-app/src/render/init.rs b/space-crush-app/src/render/init.rs
index 57ac90f..a4a3ae7 100644
--- a/space-crush-app/src/render/init.rs
+++ b/space-crush-app/src/render/init.rs
@@ -14,7 +14,7 @@ use specs::{prelude::*, ReadExpect, System, World, WriteExpect};
 use crate::{
     constants::{UNIFORM_BUFFER_INDEX_CAMERA, UNIFORM_BUFFER_INDEX_UNIFORM},
     misc::{ControlEvent, MouseButton, MouseEvent, WorldHelper},
-    resources::{Camera, Config, Geometry, State, Uniform},
+    resources::{Camera, Config, Geometry, InputState, Uniform},
     Error,
 };
 
@@ -54,10 +54,10 @@ pub struct InitData<'a> {
     uniform: WriteExpect<'a, Uniform>,
     control_events: WriteExpect<'a, EventChannel<ControlEvent>>,
 
-    state: ReadExpect<'a, State>,
     global: ReadExpect<'a, Global>,
     config: ReadExpect<'a, Config>,
     geometry: ReadExpect<'a, Geometry>,
+    input_state: ReadExpect<'a, InputState>,
     mouse_events: ReadExpect<'a, EventChannel<MouseEvent>>,
 }
 
@@ -69,16 +69,16 @@ impl<'a> System<'a> for Init {
             mut camera,
             mut uniform,
             mut control_events,
-            state,
             global,
             config,
             geometry,
+            input_state,
             mouse_events,
         } = data;
 
         /* screen size */
-        if self.resolution != state.resolution {
-            self.resolution = state.resolution;
+        if self.resolution != input_state.resolution {
+            self.resolution = input_state.resolution;
 
             gl::viewport(0, 0, self.resolution.0 as _, self.resolution.1 as _);
 
@@ -88,21 +88,22 @@ impl<'a> System<'a> for Init {
         }
 
         /* zoom */
+        let mouse_pos = &input_state.mouse_pos;
         let events = mouse_events.read(&mut self.mouse_event_id);
         for event in events {
             match event {
                 MouseEvent::ScrollY(delta) => {
                     let s = config.input.camera_zoom_speed;
                     let z = s / (s - delta);
-                    let m = Matrix4f::translate((state.mouse_pos.0, state.mouse_pos.1, 0.0).into())
+                    let m = Matrix4f::translate((mouse_pos.0, mouse_pos.1, 0.0).into())
                         * Matrix4f::scale(z.into())
-                        * Matrix4f::translate((-state.mouse_pos.0, -state.mouse_pos.1, 0.0).into());
+                        * Matrix4f::translate((-mouse_pos.0, -mouse_pos.1, 0.0).into());
 
                     camera
                         .update_with(move |v| m * v)
                         .error("Error while zooming camera");
                 }
-                MouseEvent::Delta(x, y) if state.button_state(&[MouseButton::Right]) => {
+                MouseEvent::Delta(x, y) if input_state.button_state(&[MouseButton::Right]) => {
                     let m = Matrix4f::translate((*x, -*y, 0.0).into());
 
                     camera
@@ -120,10 +121,10 @@ impl<'a> System<'a> for Init {
         }
 
         /* move camera */
-        let up = state.key_state(&config.input.camera_move_key_up);
-        let down = state.key_state(&config.input.camera_move_key_down);
-        let left = state.key_state(&config.input.camera_move_key_left);
-        let right = state.key_state(&config.input.camera_move_key_right);
+        let up = input_state.key_state(&config.input.camera_move_key_up);
+        let down = input_state.key_state(&config.input.camera_move_key_down);
+        let left = input_state.key_state(&config.input.camera_move_key_left);
+        let right = input_state.key_state(&config.input.camera_move_key_right);
 
         if up || down || left || right {
             let s = config.input.camera_move_speed * global.delta;
diff --git a/space-crush-app/src/render/planets.rs b/space-crush-app/src/render/planets.rs
index 7aeb5f4..dc20229 100644
--- a/space-crush-app/src/render/planets.rs
+++ b/space-crush-app/src/render/planets.rs
@@ -12,7 +12,10 @@ use space_crush_common::{
 use specs::{prelude::*, ReadExpect, ReadStorage, System, World};
 
 use crate::{
-    constants::{PLAYER_COLOR_DEFAULT, UNIFORM_BUFFER_INDEX_CAMERA, UNIFORM_BUFFER_INDEX_UNIFORM},
+    constants::{
+        PLANET_SIZE, PLAYER_COLOR_DEFAULT, UNIFORM_BUFFER_INDEX_CAMERA,
+        UNIFORM_BUFFER_INDEX_UNIFORM,
+    },
     misc::WorldHelper,
     resources::Geometry,
     Error,
@@ -83,7 +86,7 @@ impl<'a> System<'a> for Planets {
         for (p, _, owned) in (&position, &planet, owned.maybe()).join() {
             let p_x = p.pos.x;
             let p_y = p.pos.y;
-            let s = p.size;
+            let s = p.shape.circle().unwrap_or(PLANET_SIZE);
 
             let c = match owned.and_then(|owned| player.get(owned.owner)) {
                 Some(pv) => &pv.color,
diff --git a/space-crush-app/src/render/ships.rs b/space-crush-app/src/render/ships.rs
index ce97278..f65c1ba 100644
--- a/space-crush-app/src/render/ships.rs
+++ b/space-crush-app/src/render/ships.rs
@@ -12,7 +12,9 @@ use space_crush_common::{
 use specs::{prelude::*, ReadExpect, ReadStorage, System, World};
 
 use crate::{
-    constants::{PLAYER_COLOR_DEFAULT, UNIFORM_BUFFER_INDEX_CAMERA, UNIFORM_BUFFER_INDEX_UNIFORM},
+    constants::{
+        PLAYER_COLOR_DEFAULT, SHIP_SIZE, UNIFORM_BUFFER_INDEX_CAMERA, UNIFORM_BUFFER_INDEX_UNIFORM,
+    },
     misc::WorldHelper,
     resources::Geometry,
     Error,
@@ -103,7 +105,7 @@ impl<'a> System<'a> for Ships {
             let p_y = p.pos.y;
             let d_x = v.dir.x;
             let d_y = v.dir.y;
-            let s = p.size;
+            let s = SHIP_SIZE;
 
             let m = Matrix4f::new(
                 Vector4f::new(-s * d_y, s * d_x, 0.0, 0.0),
diff --git a/space-crush-app/src/resources/state.rs b/space-crush-app/src/resources/input_state.rs
similarity index 96%
rename from space-crush-app/src/resources/state.rs
rename to space-crush-app/src/resources/input_state.rs
index 93dbe48..3e41ed6 100644
--- a/space-crush-app/src/resources/state.rs
+++ b/space-crush-app/src/resources/input_state.rs
@@ -6,7 +6,7 @@ use std::iter::IntoIterator;
 use crate::misc::{MouseButton, VirtualKeyCode};
 
 #[derive(Default)]
-pub struct State {
+pub struct InputState {
     pub mouse_pos: (f32, f32),
     pub resolution: (u32, u32),
     pub close_requested: bool,
@@ -14,7 +14,7 @@ pub struct State {
     pub button_states: HashSet<MouseButton>,
 }
 
-impl State {
+impl InputState {
     pub fn key_state<'a, I>(&self, codes: I) -> bool
     where
         I: IntoIterator<Item = &'a VirtualKeyCode>,
diff --git a/space-crush-app/src/resources/mod.rs b/space-crush-app/src/resources/mod.rs
index 550dcb9..3ca3856 100644
--- a/space-crush-app/src/resources/mod.rs
+++ b/space-crush-app/src/resources/mod.rs
@@ -1,13 +1,13 @@
 mod camera;
 mod config;
 mod geometry;
+mod input_state;
 mod player_state;
-mod state;
 mod uniform;
 
 pub use camera::Camera;
 pub use config::Config;
 pub use geometry::Geometry;
+pub use input_state::InputState;
 pub use player_state::PlayerState;
-pub use state::State;
 pub use uniform::Uniform;
diff --git a/space-crush-app/src/systems/fleet_info_update.rs b/space-crush-app/src/systems/fleet_info_update.rs
index 02f9f2f..6ca7cbd 100644
--- a/space-crush-app/src/systems/fleet_info_update.rs
+++ b/space-crush-app/src/systems/fleet_info_update.rs
@@ -10,7 +10,7 @@ use specs::{
     World, WriteStorage,
 };
 
-use crate::{components::FleetInfo, resources::PlayerState, Error};
+use crate::{components::FleetInfo, resources::PlayerState};
 
 pub struct FleetInfoUpdate {
     modified: HashMap<Index, Modified>,
@@ -26,7 +26,7 @@ struct Modified {
 }
 
 impl FleetInfoUpdate {
-    pub fn new(world: &mut World) -> Result<Self, Error> {
+    pub fn new(world: &mut World) -> Self {
         let modified = HashMap::new();
         let need_update = BitSet::new();
 
@@ -50,12 +50,12 @@ impl FleetInfoUpdate {
                 .register_reader()
         };
 
-        Ok(Self {
+        Self {
             modified,
             need_update,
             fleet_owned_id,
             player_owned_id,
-        })
+        }
     }
 }
 
diff --git a/space-crush-app/src/systems/state_update.rs b/space-crush-app/src/systems/state_update.rs
index fd52469..9c245a7 100644
--- a/space-crush-app/src/systems/state_update.rs
+++ b/space-crush-app/src/systems/state_update.rs
@@ -4,7 +4,7 @@ use specs::{prelude::*, ReadExpect, System, World, Write};
 
 use crate::{
     misc::{KeyboardEvent, MouseEvent, WindowEvent},
-    resources::State,
+    resources::InputState,
     Error,
 };
 
@@ -30,7 +30,7 @@ impl StateUpdate {
 
 #[derive(SystemData)]
 pub struct StateUpdateData<'a> {
-    state: Write<'a, State>,
+    input_state: Write<'a, InputState>,
     mouse_events: ReadExpect<'a, EventChannel<MouseEvent>>,
     window_events: ReadExpect<'a, EventChannel<WindowEvent>>,
     keyboard_events: ReadExpect<'a, EventChannel<KeyboardEvent>>,
@@ -41,7 +41,7 @@ impl<'a> System<'a> for StateUpdate {
 
     fn run(&mut self, data: Self::SystemData) {
         let StateUpdateData {
-            mut state,
+            mut input_state,
             mouse_events,
             window_events,
             keyboard_events,
@@ -51,13 +51,13 @@ impl<'a> System<'a> for StateUpdate {
         for event in events {
             match event {
                 MouseEvent::Move(x, y) => {
-                    let x = *x - state.resolution.0 as f32 / 2.0;
-                    let y = state.resolution.1 as f32 / 2.0 - *y;
+                    let x = *x - input_state.resolution.0 as f32 / 2.0;
+                    let y = input_state.resolution.1 as f32 / 2.0 - *y;
 
-                    state.mouse_pos = (x, y);
+                    input_state.mouse_pos = (x, y);
                 }
-                MouseEvent::ButtonUp(button) => state.set_button_state(*button, false),
-                MouseEvent::ButtonDown(button) => state.set_button_state(*button, true),
+                MouseEvent::ButtonUp(button) => input_state.set_button_state(*button, false),
+                MouseEvent::ButtonDown(button) => input_state.set_button_state(*button, true),
                 _ => (),
             }
         }
@@ -66,10 +66,10 @@ impl<'a> System<'a> for StateUpdate {
         for event in events {
             match event {
                 WindowEvent::Resize(w, h) => {
-                    state.resolution = (*w, *h);
+                    input_state.resolution = (*w, *h);
                 }
                 WindowEvent::Close => {
-                    state.close_requested = true;
+                    input_state.close_requested = true;
                 }
             }
         }
@@ -77,8 +77,8 @@ impl<'a> System<'a> for StateUpdate {
         let events = keyboard_events.read(&mut self.keyboard_events_id);
         for event in events {
             match event {
-                KeyboardEvent::KeyUp(code) => state.set_key_state(*code, false),
-                KeyboardEvent::KeyDown(code) => state.set_key_state(*code, true),
+                KeyboardEvent::KeyUp(code) => input_state.set_key_state(*code, false),
+                KeyboardEvent::KeyDown(code) => input_state.set_key_state(*code, true),
                 _ => (),
             }
         }
diff --git a/space-crush-common/src/components/mod.rs b/space-crush-common/src/components/mod.rs
index 51adf08..f140429 100644
--- a/space-crush-common/src/components/mod.rs
+++ b/space-crush-common/src/components/mod.rs
@@ -10,6 +10,6 @@ pub use asteroid::{Asteroid, Type as AsteroidType};
 pub use fleet::{Fleet, Owned as FleetOwned};
 pub use planet::Planet;
 pub use player::{Owned as PlayerOwned, Player};
-pub use position::Position;
+pub use position::{Position, Shape};
 pub use ship::{Count as ShipCount, Ship, Type as ShipType};
 pub use velocity::Velocity;
diff --git a/space-crush-common/src/components/position.rs b/space-crush-common/src/components/position.rs
index 009ee6b..fc43b3c 100644
--- a/space-crush-common/src/components/position.rs
+++ b/space-crush-common/src/components/position.rs
@@ -5,9 +5,31 @@ use specs::{Component, VecStorage};
 #[derive(Clone, Debug, Default, Serialize, Deserialize)]
 pub struct Position {
     pub pos: Vector2f,
-    pub size: f32,
+    pub shape: Shape,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub enum Shape {
+    Dot,
+    Circle(f32),
 }
 
 impl Component for Position {
     type Storage = VecStorage<Self>;
 }
+
+impl Shape {
+    pub fn circle(&self) -> Option<f32> {
+        if let Self::Circle(r) = &self {
+            Some(*r)
+        } else {
+            None
+        }
+    }
+}
+
+impl Default for Shape {
+    fn default() -> Self {
+        Self::Dot
+    }
+}