From dbfe4a779005c1f86f20a5d8d2368593e9b13f5e Mon Sep 17 00:00:00 2001
From: yuni <hut@hut.pm>
Date: Tue, 26 Nov 2024 23:57:01 +0100
Subject: [PATCH] aurora: disable backface culling, making it more visible from
 the inside

---
 src/cmd.rs  |  8 ++++----
 src/load.rs | 30 ++++++++++++++++++++++++++----
 2 files changed, 30 insertions(+), 8 deletions(-)

diff --git a/src/cmd.rs b/src/cmd.rs
index 3c8719f..91658ba 100644
--- a/src/cmd.rs
+++ b/src/cmd.rs
@@ -1277,7 +1277,9 @@ fn spawn_entities(
     mut meshes: ResMut<Assets<Mesh>>,
     mut materials: ResMut<Assets<StandardMaterial>>,
     mut materials_jupiter: ResMut<Assets<load::JupitersRing>>,
-    mut materials_aurora: ResMut<Assets<load::JupitersAurora>>,
+    mut materials_aurora: ResMut<
+        Assets<bevy::pbr::ExtendedMaterial<StandardMaterial, load::JupitersAurora>>,
+    >,
     mut id2pos: ResMut<game::Id2Pos>,
     mut achievement_tracker: ResMut<var::AchievementTracker>,
     mut ew_updateavatar: EventWriter<hud::UpdateAvatarEvent>,
@@ -1667,9 +1669,7 @@ fn spawn_entities(
                 world::DespawnOnPlayerDeath,
                 MaterialMeshBundle {
                     mesh: meshes.add(Sphere::new(radius).mesh().uv(128, 128)),
-                    material: materials_aurora.add(load::JupitersAurora {
-                        alpha_mode: AlphaMode::Blend,
-                    }),
+                    material: materials_aurora.add(load::JupitersAurora::material()),
                     transform: Transform::from_translation(absolute_pos.as_vec3()),
                     ..default()
                 },
diff --git a/src/load.rs b/src/load.rs
index 7fb0178..848922f 100644
--- a/src/load.rs
+++ b/src/load.rs
@@ -19,7 +19,9 @@ pub struct LoadPlugin;
 impl Plugin for LoadPlugin {
     fn build(&self, app: &mut App) {
         app.add_plugins(MaterialPlugin::<JupitersRing>::default());
-        app.add_plugins(MaterialPlugin::<JupitersAurora>::default());
+        app.add_plugins(MaterialPlugin::<
+            ExtendedMaterial<StandardMaterial, JupitersAurora>,
+        >::default());
         app.add_plugins(MaterialPlugin::<SkyBox>::default());
         app.add_plugins(MaterialPlugin::<
             ExtendedMaterial<StandardMaterial, AsteroidSurface>,
@@ -117,12 +119,32 @@ pub struct JupitersAurora {
     pub alpha_mode: AlphaMode,
 }
 
-impl Material for JupitersAurora {
+impl MaterialExtension for JupitersAurora {
     fn fragment_shader() -> ShaderRef {
         "shaders/aurora.wgsl".into()
     }
-    fn alpha_mode(&self) -> AlphaMode {
-        self.alpha_mode
+}
+
+impl Default for JupitersAurora {
+    fn default() -> Self {
+        Self {
+            alpha_mode: AlphaMode::default(),
+        }
+    }
+}
+
+impl JupitersAurora {
+    pub fn material() -> ExtendedMaterial<StandardMaterial, JupitersAurora> {
+        ExtendedMaterial {
+            base: StandardMaterial {
+                perceptual_roughness: 1.0,
+                alpha_mode: AlphaMode::Blend,
+                opaque_render_method: OpaqueRendererMethod::Auto,
+                cull_mode: None,
+                ..default()
+            },
+            extension: Self::default(),
+        }
     }
 }