Finish removal of Position

The component has been completely removed, and all call sites are fixed
to use the Transform directly.

src/asteroids.rs

@@ -7,7 +7,7 @@ use std::time::Duration;
 
 use bevy::prelude::*;
 
-use crate::{GameAssets, Rotation, WorldSize, physics::Position, physics::Velocity};
+use crate::{GameAssets, Rotation, WorldSize, physics::Velocity};
 
 #[derive(Component, Deref, DerefMut)]
 pub struct Asteroid(AsteroidSize);
@@ -120,7 +120,7 @@ pub fn spawn_asteroid(
             Asteroid(AsteroidSize::Small),
             Collider::ball(collider_radius),
             Sensor,
-            Position(spawn.pos),
+            Transform::from_translation(spawn.pos.extend(0.0)),
             Velocity(spawn.vel),
             Rotation(0.0),
             Mesh2d(mesh),

src/physics.rs

@@ -5,9 +5,6 @@ use crate::WorldSize;
 
 use bevy::prelude::*;
 
-#[derive(Component)]
-pub(crate) struct Position(pub(crate) bevy::math::Vec2);
-
 #[derive(Component)]
 pub(crate) struct Velocity(pub(crate) bevy::math::Vec2);
 

src/ship.rs

@@ -1,6 +1,6 @@
 use crate::{
     GameAssets, Rotation,
-    physics::{Position, Velocity, Wrapping},
+    physics::{Velocity, Wrapping},
 };
 
 use bevy::prelude::*;
@@ -18,7 +18,6 @@ pub fn spawn_player(mut commands: Commands, game_assets: Res<GameAssets>) {
             ActiveCollisionTypes::STATIC_STATIC,
             Ship,
             Wrapping,
-            Position(Vec2::default()),
             Velocity(Vec2::ZERO),
             Rotation(0.0),
             Mesh2d(game_assets.ship().0),