diff --git a/crates/border-wars/src/camera.rs b/crates/border-wars/src/camera.rs
index 66adc35..c8d5954 100644
--- a/crates/border-wars/src/camera.rs
+++ b/crates/border-wars/src/camera.rs
@@ -1,24 +1,38 @@
-//! TODO
+//! The file that contains all camera's systems for movement and scale.
 
-use bevy::input::mouse::MouseScrollUnit;
+use bevy::input::mouse::{MouseScrollUnit, MouseWheel};
 use bevy::prelude::*;
-use bevy::input::mouse::MouseWheel;
 
 use crate::CurrentScene;
 
-/// The camera speed movement.
+/// The speed of the camera movement.
 const CAMERRA_SPEED_MOVEMENT: f32 = 10.;
 
-/// The camera smoothing during the movement.
-const SMOOTHING: f32 = 0.5;
-
-/// The camera speed scale.
+/// The speed of the camera scaling.
 const CAMERRA_SPEED_SCALE: f32 = 0.1;
 
-/// The camera min and max scale.
+/// The min of the camera scale.
 const MIN_SCALE: f32 = 0.5;
+
+/// The max of the camera scale.
 const MAX_SCALE: f32 = 5.;
 
+/// The keys movement of the camera.
+#[derive(Resource)]
+pub struct KeysMovementSettings{
+    /// Key to move the camera up.
+    pub up: KeyCode,
+
+    /// Key to move the camera down.
+    pub down: KeyCode,
+
+    /// Key to move the camera right.
+    pub right: KeyCode,
+
+    /// Key to move the camera left.
+    pub left: KeyCode,
+}
+
 /// A bevy plugin for the camera.
 /// It ables you to move the camera with the keyboard, and scale with the mouse.
 pub struct CameraPlugin;
@@ -26,6 +40,7 @@ pub struct CameraPlugin;
 impl Plugin for CameraPlugin {
     fn build(&self, app: &mut App) {
         app.add_systems(Startup, init_camera)
+        .add_systems(Startup, init_key_movement)
         .add_systems(Update, movement_system.run_if(in_state(CurrentScene::Game)))
         .add_systems(Update, scale_system.run_if(in_state(CurrentScene::Game)));
     }
@@ -36,27 +51,33 @@ fn init_camera(mut commands: Commands) {
     commands.spawn(Camera2dBundle::default());
 }
 
+/// The fonction that initialize the key movement settings.
+fn init_key_movement(mut commands: Commands){
+    commands.insert_resource(KeysMovementSettings{
+        up: KeyCode::Z,
+        down: KeyCode::S,
+        right: KeyCode::D,
+        left: KeyCode::Q,
+    });
+}
+
 /// The fonction that move the camera with the keyboard.
-fn movement_system(mut query: Query<&mut Transform, With<Camera>>, keys: Res<Input<KeyCode>>,){
+fn movement_system(mut query: Query<&mut Transform, With<Camera>>, keys: Res<Input<KeyCode>>, keys_settings: Res<KeysMovementSettings>) {
     for mut transform in query.iter_mut() {
 
-        let mut target = transform.translation;
-        
+        let mut target = Vec3::ZERO;
         for key in keys.get_pressed() {
-            match key {
-                KeyCode::Z => target.y += CAMERRA_SPEED_MOVEMENT,
-                KeyCode::S => target.y -= CAMERRA_SPEED_MOVEMENT,
-                KeyCode::D => target.x += CAMERRA_SPEED_MOVEMENT,
-                KeyCode::Q => target.x -= CAMERRA_SPEED_MOVEMENT,
-                _ => return
+            match *key {
+                v if v == keys_settings.up => target.y += CAMERRA_SPEED_MOVEMENT,
+                v if v == keys_settings.down => target.y -= CAMERRA_SPEED_MOVEMENT,
+                v if v == keys_settings.right => target.x += CAMERRA_SPEED_MOVEMENT,
+                v if v == keys_settings.left => target.x -= CAMERRA_SPEED_MOVEMENT,
+                _ => continue,
             }
             
         }
 
-        // Apply the lerp for smoothing the movement of the camera.
-        transform.translation = transform
-            .translation
-            .lerp(target, SMOOTHING);
+        transform.translation += target;
     }    
 }
 
@@ -69,7 +90,7 @@ fn scale_system(mut scroll_evr: EventReader<MouseWheel>, mut query: Query<&mut O
                 return;
             }
 
-            let future_scale = projection.scale + ev.y * CAMERRA_SPEED_SCALE;
+            let future_scale = ev.y.mul_add(CAMERRA_SPEED_SCALE, projection.scale);
             if  MIN_SCALE < future_scale && future_scale < MAX_SCALE  {
 
                 projection.scale = future_scale;
diff --git a/crates/border-wars/src/main.rs b/crates/border-wars/src/main.rs
index fc08ff5..753f2a3 100644
--- a/crates/border-wars/src/main.rs
+++ b/crates/border-wars/src/main.rs
@@ -14,7 +14,7 @@ fn main() {
 
 fn init_shap(mut commands: Commands, assets_server: Res<AssetServer>) {
     commands.spawn(SpriteBundle{
-        texture: assets_server.load("caca.png").into(),
+        texture: assets_server.load("caca.png"),
         ..Default::default()
     });
 }
\ No newline at end of file