diff --git a/README.md b/README.md
deleted file mode 100644
index 44b1874..0000000
--- a/README.md
+++ /dev/null
@@ -1,17 +0,0 @@
-## Feuille de route
-* Créer deuxième planète
-* Gravité naïve
-	* Vitesse
-	* Poids
-* Faire un système solaire (trouver valeurs)
-* Quadtree
-* Réutiliser les mêmes Mesh et Material (augmente FPS en dézoom)
-* Générer un mesh avec noise
-* Générer plusieurs meshes
-* (?) Collision
-	* Détection
-		* Double boucle naïve
-		* Intégré au quadtree
-	* Fusion simple
-	* Fragmentation
-	* Cratère
diff --git a/src/gen.rs b/src/gen.rs
index 4de5e64..32243d7 100644
--- a/src/gen.rs
+++ b/src/gen.rs
@@ -17,7 +17,7 @@ pub fn planet() -> Mesh {
 				let a = std::f32::consts::TAU * i as f32 / perimeter as f32;
 				[r * a.cos(), r * a.sin(), 0.]
 			})
-			.chain([[0., 0., 0.]])
+			.chain([[0., 0., 0.]].into_iter())
 			.collect::<Vec<_>>(),
 	);
 	let mut triangles = Vec::new();
diff --git a/src/main.rs b/src/main.rs
index 2ee5d7e..097c611 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,11 +1,7 @@
 mod gen;
 mod quadtree;
 
-use bevy::{
-	ecs::query::BatchingStrategy,
-	prelude::*,
-	sprite::{MaterialMesh2dBundle, Mesh2dHandle},
-};
+use bevy::{ecs::query::BatchingStrategy, prelude::*, sprite::MaterialMesh2dBundle};
 
 #[global_allocator]
 static ALLOCATOR: cap::Cap<std::alloc::System> =
@@ -42,70 +38,47 @@ fn setup(
 		.spawn(Camera2dBundle::default())
 		.insert(bevy_pancam::PanCam::default());
 
-	let red = materials.add(ColorMaterial::from(Color::RED));
-	let circle_5: Mesh2dHandle = meshes.add(shape::Circle::new(5.).into()).into();
-
-	commands
-		.spawn(Planet {
-			pos: TransformBundle::from(Transform::from_translation(Vec3::new(0., 0., 0.))),
-			mass: Mass(1.988e18),
-			speed: Speed(Vec2::new(0.0, 0.0)),
-			visibility: InheritedVisibility::VISIBLE,
-		})
-		.with_children(|parent| {
-			parent.spawn(MaterialMesh2dBundle {
-				mesh: meshes.add(gen::planet()).into(),
-				material: materials.add(ColorMaterial::from(Color::YELLOW)),
-				..default()
-			});
-		});
-	commands
-		.spawn(Planet {
-			pos: TransformBundle::from(Transform::from_translation(Vec3::new(400., 0., 0.))),
-			mass: Mass(5.9736e14),
-			speed: Speed(Vec2::new(0.0, 500.0)),
-			visibility: InheritedVisibility::VISIBLE,
-		})
-		.with_children(|parent| {
-			parent.spawn(MaterialMesh2dBundle {
-				mesh: meshes.add(shape::Circle::new(10.).into()).into(),
-				material: materials.add(ColorMaterial::from(Color::BLUE)),
-				..default()
-			});
-		});
-	commands
-		.spawn(Planet {
-			pos: TransformBundle::from(Transform::from_translation(Vec3::new(-400., 0., 0.))),
-			mass: Mass(5.9736e14),
-			speed: Speed(Vec2::new(0.0, -500.0)),
-			visibility: InheritedVisibility::VISIBLE,
-		})
-		.with_children(|parent| {
-			parent.spawn(MaterialMesh2dBundle {
-				mesh: meshes.add(shape::Circle::new(10.).into()).into(),
-				material: materials.add(ColorMaterial::from(Color::BLUE)),
-				..default()
-			});
-		});
+	commands.spawn(Planet {
+		mass: Mass(1.988e18),
+		speed: Speed(Vec2::new(0.0, 0.0)),
+		mesh: MaterialMesh2dBundle {
+			mesh: meshes.add(gen::planet()).into(),
+			material: materials.add(ColorMaterial::from(Color::YELLOW)),
+			transform: Transform::from_translation(Vec3::new(0., 0., 0.)),
+			..default()
+		},
+	});
+	commands.spawn(Planet {
+		mass: Mass(5.9736e14),
+		speed: Speed(Vec2::new(0.0, 500.0)),
+		mesh: MaterialMesh2dBundle {
+			mesh: meshes.add(shape::Circle::new(10.).into()).into(),
+			material: materials.add(ColorMaterial::from(Color::BLUE)),
+			transform: Transform::from_translation(Vec3::new(400., 0., 0.)),
+			..default()
+		},
+	});
+	commands.spawn(Planet {
+		mass: Mass(5.9736e14),
+		speed: Speed(Vec2::new(0.0, -500.0)),
+		mesh: MaterialMesh2dBundle {
+			mesh: meshes.add(shape::Circle::new(10.).into()).into(),
+			material: materials.add(ColorMaterial::from(Color::BLUE)),
+			transform: Transform::from_translation(Vec3::new(-400., 0., 0.)),
+			..default()
+		},
+	});
 	for i in 0..4000u32 {
-		commands
-			.spawn(Planet {
-				pos: TransformBundle::from(Transform::from_translation(Vec3::new(
-					-450. - i as f32 / 4.,
-					0.,
-					0.,
-				))),
-				mass: Mass(1.),
-				speed: Speed(Vec2::new(0.0, -500.0)),
-				visibility: InheritedVisibility::VISIBLE,
-			})
-			.with_children(|parent| {
-				parent.spawn(MaterialMesh2dBundle {
-					mesh: circle_5.clone(),
-					material: red.clone(),
-					..default()
-				});
-			});
+		commands.spawn(Planet {
+			mass: Mass(1.),
+			speed: Speed(Vec2::new(0.0, -500.0)),
+			mesh: MaterialMesh2dBundle {
+				mesh: meshes.add(shape::Circle::new(5.).into()).into(),
+				material: materials.add(ColorMaterial::from(Color::RED)),
+				transform: Transform::from_translation(Vec3::new(-450. - i as f32 / 4., 0., 0.)),
+				..default()
+			},
+		});
 	}
 }
 
@@ -123,10 +96,9 @@ struct Mass(f32);
 
 #[derive(Bundle)]
 struct Planet {
-	pos: TransformBundle,
 	mass: Mass,
 	speed: Speed,
-	visibility: InheritedVisibility,
+	mesh: MaterialMesh2dBundle<ColorMaterial>,
 }
 
 #[derive(Resource)]