Cargo.toml

@@ -1,9 +1,10 @@
 [package]
 name = "moria"
 version = "0.1.0"
-edition = "2021"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-bevy = "0.7.0"
-bevy_mod_raycast = "0.5.0"
-bevy_prototype_debug_lines = { version = "0.7", features = ["3d"] }
+bevy = "0.5.0"
+bevy_mod_raycast = "0.2.2"

src/camera.rs

@@ -1,11 +1,10 @@
 use bevy::prelude::*;
 use bevy_mod_raycast::{RayCastMethod, RayCastSource};
 
-use crate::{pillar::UnlitPillar, player::*};
+use crate::player::*;
 
 pub struct MyRaycastSet;
 
-#[derive(Component)]
 pub struct Camera;
 pub fn spawn_camera(commands: &mut Commands) {
     commands
@@ -25,7 +24,7 @@ pub fn camera_follow_player(
     };
 
     for (mut trans, _) in camera.iter_mut() {
-        trans.translation = player_pos + Vec3::new(-100.0, 200.0, 100.0);
+        trans.translation = player_pos + Vec3::new(-50.0, 100.0, 50.0);
         trans.look_at(player_pos, Vec3::Y);
     }
 }
@@ -44,38 +43,16 @@ pub fn update_raycast_with_cursor(
 }
 
 #[derive(Default)]
-pub struct MouseCoords {
-    /// The mouse coordinates on the floor, as they are
-    pub raw: Vec3,
-    /// The mouse coordinates, after being snapped to pillars and stuff
-    pub processed: Vec3,
-}
+pub struct MouseCoords(pub Vec3);
 
 // Update our `RayCastSource` with the current cursor position every frame.
-pub fn update_raw_mouse_coords(
+pub fn update_mouse_coords(
     query: Query<&RayCastSource<MyRaycastSet>>,
     mut coords: ResMut<MouseCoords>,
 ) {
     for pick_source in query.iter() {
         if let Some((_, intersection)) = pick_source.intersect_top() {
-            coords.raw = intersection.position();
-        }
-    }
-}
-
-/// checks for pillars and stuff
-pub fn update_processed_mouse_coords(
-    query: Query<(&Transform, &UnlitPillar)>,
-    mut coords: ResMut<MouseCoords>,
-) {
-    let mut dis = 20.0;
-    coords.processed = coords.raw;
-
-    for (trans, _) in query.iter() {
-        let d = trans.translation.distance(coords.raw);
-        if d < dis {
-            coords.processed = trans.translation;
-            dis = d;
+            coords.0 = intersection.position();
         }
     }
 }

src/debug.rs

@@ -1,49 +0,0 @@
-use std::f32::consts::TAU;
-
-use bevy::{ecs::schedule::ShouldRun, prelude::*};
-use bevy_prototype_debug_lines::*;
-
-use crate::illumination::Illumination;
-
-#[derive(Default)]
-pub struct Debug {
-    on: bool,
-}
-
-pub fn debug_run_criteria(debug: Res<Debug>) -> ShouldRun {
-    if debug.on {
-        ShouldRun::Yes
-    } else {
-        ShouldRun::No
-    }
-}
-
-pub fn debug_draw_illumination(
-    query: Query<(&GlobalTransform, &Illumination)>,
-    mut lines: ResMut<DebugLines>,
-) {
-    for (trans, illumination) in query.iter() {
-        draw_sphere(&mut lines, trans.translation, illumination.radius);
-    }
-}
-
-fn draw_sphere(lines: &mut DebugLines, c: Vec3, r: f32) {
-    const THICKNESS: f32 = 0.1;
-    const MAX_LINES: usize = 10;
-
-    for i in 0..MAX_LINES {
-        let angle1 = (i as f32 / MAX_LINES as f32) * TAU;
-        let angle2 = ((i + 1) as f32 / MAX_LINES as f32) * TAU;
-
-        let start = Vec3::new(r * f32::cos(angle1), 1.0, r * f32::sin(angle1)) + c;
-        let end = Vec3::new(r * f32::cos(angle2), 1.0, r * f32::sin(angle2)) + c;
-
-        lines.line(start, end, THICKNESS);
-    }
-}
-
-pub fn toggle_debug(mut debug: ResMut<Debug>, input: Res<Input<KeyCode>>) {
-    if input.pressed(KeyCode::J) && input.pressed(KeyCode::K) && input.just_pressed(KeyCode::L) {
-        debug.on = !debug.on;
-    }
-}

src/illumination.rs

@@ -1,6 +0,0 @@
-use bevy::prelude::*;
-
-#[derive(Component)]
-pub struct Illumination {
-    pub radius: f32,
-}

src/light_balls.rs

@@ -1,10 +1,9 @@
-use bevy::{pbr::CubemapVisibleEntities, prelude::*, render::primitives::CubemapFrusta};
+use bevy::prelude::*;
 
-use crate::{illumination::Illumination, player::Player};
+use crate::player::Player;
 
 const RANGE: f32 = 25.0;
 
-#[derive(Component)]
 pub struct LightBall;
 pub fn light_up_ball_when_close_to_player(
     mut commands: Commands,
@@ -14,8 +13,7 @@ pub fn light_up_ball_when_close_to_player(
         &Transform,
         &LightBall,
         &mut Handle<StandardMaterial>,
-        Option<&mut PointLight>,
-        Option<&mut Illumination>,
+        Option<&mut Light>,
     )>,
     materials: Res<LightBallMaterials>,
 ) {
@@ -25,7 +23,7 @@ pub fn light_up_ball_when_close_to_player(
         return;
     };
 
-    for (entity, trans, _, mut material, light, illumination) in thingies.iter_mut() {
+    for (entity, trans, _, mut material, light) in thingies.iter_mut() {
         let dis = trans.translation.distance(player_pos);
         if dis < RANGE {
             *material = materials.lit.clone();
@@ -35,30 +33,18 @@ pub fn light_up_ball_when_close_to_player(
             if let Some(mut l) = light {
                 l.intensity = 300.0 * (RANGE - dis) / RANGE;
             } else {
-                commands.entity(entity).insert(PointLight {
+                commands.entity(entity).insert(Light {
                     color: Color::rgb(15.0, 15.0, 15.0),
                     intensity: 300.0 * (RANGE - dis) / RANGE,
                     ..Default::default()
                 });
             }
-
-            // same with illumination
-            if let Some(mut l) = illumination {
-                l.radius = 15.0 * ((RANGE - dis) / RANGE).sqrt();
-            } else {
-                commands.entity(entity).insert(Illumination {
-                    radius: 15.0 * ((RANGE - dis) / RANGE).sqrt().sqrt(),
-                });
-            }
         } else {
             *material = materials.unlit.clone();
 
             // remove light if there is one
             if light.is_some() {
-                commands.entity(entity).remove::<PointLight>();
-            }
-            if illumination.is_some() {
-                commands.entity(entity).remove::<Illumination>();
+                commands.entity(entity).remove::<Light>();
             }
         }
     }
@@ -76,8 +62,6 @@ pub fn spawn_light_ball(
             transform: Transform::from_translation(translation),
             ..Default::default()
         })
-        .insert(CubemapFrusta::default())
-        .insert(CubemapVisibleEntities::default())
         .insert(LightBall);
 }
 

src/loading.rs

@@ -1,12 +1,12 @@
 use bevy::{
     prelude::*,
-    render::render_resource::{AddressMode, FilterMode},
+    render::texture::{AddressMode, FilterMode},
 };
 
 use crate::AppState;
 
 pub struct LoadedAssets {
-    pub floor: Handle<Image>,
+    pub floor: Handle<Texture>,
 }
 impl FromWorld for LoadedAssets {
     fn from_world(world: &mut World) -> Self {
@@ -19,14 +19,14 @@ impl FromWorld for LoadedAssets {
 
 pub fn loading(
     assets: Res<LoadedAssets>,
-    mut textures: ResMut<Assets<Image>>,
+    mut textures: ResMut<Assets<Texture>>,
     mut state: ResMut<State<AppState>>,
 ) {
     if let Some(t) = textures.get_mut(&assets.floor) {
-        t.sampler_descriptor.address_mode_u = AddressMode::MirrorRepeat;
-        t.sampler_descriptor.address_mode_v = AddressMode::Repeat;
-        t.sampler_descriptor.address_mode_w = AddressMode::Repeat;
-        t.sampler_descriptor.mipmap_filter = FilterMode::Linear;
+        t.sampler.address_mode_u = AddressMode::MirrorRepeat;
+        t.sampler.address_mode_v = AddressMode::Repeat;
+        t.sampler.address_mode_w = AddressMode::Repeat;
+        t.sampler.mipmap_filter = FilterMode::Linear;
 
         state.set(AppState::Game).unwrap();
     }

src/main.rs

@@ -1,20 +1,15 @@
 use bevy::{input::system::exit_on_esc_system, pbr::AmbientLight, prelude::*};
-use bevy_mod_raycast::{DefaultRaycastingPlugin, RayCastMesh, RaycastSystem};
-use bevy_prototype_debug_lines::*;
+use bevy_mod_raycast::{build_rays, update_raycast, PluginState, RayCastMesh, RaycastSystem};
 
 mod camera;
 mod columns;
-mod debug;
-mod illumination;
 mod light_balls;
 mod loading;
-mod pillar;
 mod player;
+mod rendering;
 
 use camera::*;
-use debug::*;
 use light_balls::*;
-use pillar::*;
 use player::*;
 
 #[derive(Clone, PartialEq, Eq, Hash, Debug)]
@@ -24,51 +19,52 @@ pub enum AppState {
 }
 
 fn main() {
-    App::new()
+    App::build()
         .insert_resource(Msaa { samples: 4 })
         .insert_resource(ClearColor(Color::rgb(0.0, 0.0, 0.0)))
-        .add_plugins(DefaultPlugins)
-        .add_plugin(DebugLinesPlugin::with_depth_test(true))
-        .init_resource::<Debug>()
+        .add_plugins(rendering::CustomPlugins)
         .init_resource::<LightBallMaterials>()
-        .init_resource::<PillarMaterials>()
         .init_resource::<MouseCoords>()
         .init_resource::<FloatingOrbsInterpolationState>()
-        .init_resource::<PillarActivationProgress>()
-        .init_resource::<LightExcitationState>()
         .init_resource::<loading::LoadedAssets>()
         .add_state(AppState::Loading)
         // raycasting
-        .add_plugin(DefaultRaycastingPlugin::<MyRaycastSet>::default())
+        .init_resource::<PluginState<MyRaycastSet>>()
+        .add_system_to_stage(
+            CoreStage::PostUpdate,
+            build_rays::<MyRaycastSet>
+                .system()
+                .label(RaycastSystem::BuildRays),
+        )
+        .add_system_to_stage(
+            CoreStage::PostUpdate,
+            update_raycast::<MyRaycastSet>
+                .system()
+                .label(RaycastSystem::UpdateRaycast)
+                .after(RaycastSystem::BuildRays),
+        )
         .add_system_to_stage(
             CoreStage::PreUpdate,
-            update_raycast_with_cursor.before(RaycastSystem::<MyRaycastSet>::BuildRays),
+            update_raycast_with_cursor
+                .system()
+                .before(RaycastSystem::BuildRays),
         )
         // loading
-        .add_system_set(SystemSet::on_update(AppState::Loading).with_system(loading::loading))
-        // game
-        .add_system_set(SystemSet::on_enter(AppState::Game).with_system(setup))
         .add_system_set(
-            SystemSet::on_update(AppState::Game)
-                .with_system(update_raw_mouse_coords)
-                .with_system(update_processed_mouse_coords)
-                .with_system(exit_on_esc_system)
-                .with_system(light_movement)
-                .with_system(move_light_friends)
-                .with_system(update_floating_orbs_interpolation)
-                .with_system(move_player)
-                .with_system(camera_follow_player)
-                .with_system(light_up_ball_when_close_to_player)
-                .with_system(increase_progress_when_activating_pillar)
-                .with_system(activate_pillar_when_progress_is_1)
-                .with_system(decrease_pillar_strength)
-                .with_system(update_light_excitation_state)
-                .with_system(toggle_debug),
+            SystemSet::on_update(AppState::Loading).with_system(loading::loading.system()),
         )
+        // game
+        .add_system_set(SystemSet::on_enter(AppState::Game).with_system(setup.system()))
         .add_system_set(
             SystemSet::on_update(AppState::Game)
-                .with_run_criteria(debug_run_criteria)
-                .with_system(debug_draw_illumination),
+                .with_system(update_mouse_coords.system())
+                .with_system(exit_on_esc_system.system())
+                .with_system(light_movement.system())
+                .with_system(move_light_friends.system())
+                .with_system(update_floating_orbs_interpolation.system())
+                .with_system(move_player.system())
+                .with_system(camera_follow_player.system())
+                .with_system(light_up_ball_when_close_to_player.system()),
         )
         .run();
 }
@@ -80,7 +76,6 @@ fn setup(
     mut materials: ResMut<Assets<StandardMaterial>>,
     mut ambient: ResMut<AmbientLight>,
     light_ball_materials: Res<LightBallMaterials>,
-    pillar_materials: Res<PillarMaterials>,
 ) {
     // set ambient light to very low
     ambient.color = Color::rgb(0.3, 0.3, 0.3);
@@ -111,30 +106,11 @@ fn setup(
     // columns
     // columns::spawn_columns(&mut commands, &mut meshes, &mut materials);
 
-    spawn_pillar(
-        &mut commands,
-        &pillar_materials,
-        &mut materials,
-        Vec3::new(0.0, 1.0, 50.0),
-    );
-    spawn_pillar(
-        &mut commands,
-        &pillar_materials,
-        &mut materials,
-        Vec3::new(-30.0, 1.0, 50.0),
-    );
-    spawn_pillar(
-        &mut commands,
-        &pillar_materials,
-        &mut materials,
-        Vec3::new(30.0, 1.0, 50.0),
-    );
-
     // player
     spawn_player(&mut commands, &mut meshes, &mut materials);
 
     // light balls
-    for i in 2..12 {
+    for i in 1..10 {
         spawn_light_ball(
             &mut commands,
             &light_ball_materials,

src/pillar.rs

@@ -1,166 +0,0 @@
-use bevy::prelude::*;
-
-use crate::{camera::MouseCoords, player::LightFriends};
-
-const SIZE: f32 = 10.0;
-const HEIGHT: f32 = 20.0;
-
-#[derive(Component)]
-pub struct UnlitPillar;
-#[derive(Component)]
-pub struct LitPillar {
-    created_at: f64,
-}
-
-pub fn spawn_pillar(
-    commands: &mut Commands,
-    pillar_mats: &PillarMaterials,
-    materials: &mut Assets<StandardMaterial>,
-    pos: Vec3,
-) {
-    let mut unlit: StandardMaterial = Color::rgb(0.9, 0.9, 0.9).into();
-    unlit.metallic = 0.0;
-    unlit.reflectance = 0.0;
-    let unlit = materials.add(unlit);
-    commands
-        .spawn_bundle(PbrBundle {
-            mesh: pillar_mats.mesh.clone(),
-            material: unlit,
-            transform: Transform::from_translation(pos),
-            ..Default::default()
-        })
-        .insert(UnlitPillar);
-}
-
-#[derive(Default)]
-pub struct PillarActivationProgress(pub Option<(Entity, f32)>);
-
-pub fn increase_progress_when_activating_pillar(
-    pillars: Query<(Entity, &Transform, &UnlitPillar)>,
-    friends: Query<(&Transform, &LightFriends)>,
-    mut progress: ResMut<PillarActivationProgress>,
-    input: Res<Input<MouseButton>>,
-    mouse: Res<MouseCoords>,
-) {
-    if !input.pressed(MouseButton::Left) {
-        return;
-    }
-
-    let (friends_trans, _) = if let Some(f) = friends.iter().next() {
-        f
-    } else {
-        return;
-    };
-
-    for (entity, trans, _) in pillars.iter() {
-        let friends_d = trans.translation.distance(friends_trans.translation);
-        let mouse_d = trans.translation.distance(mouse.processed);
-        if friends_d < 10.0 && mouse_d < 1.0 {
-            // set as the one on progress and increase
-            if let Some(p) = &mut progress.0 {
-                if p.0 == entity {
-                    p.1 = (p.1 + 0.008).clamp(0.0, 1.0);
-                } else {
-                    *p = (entity, 0.0);
-                }
-            } else {
-                progress.0 = Some((entity, 0.0));
-            }
-        }
-    }
-}
-
-pub fn activate_pillar_when_progress_is_1(
-    mut commands: Commands,
-    mut progress_res: ResMut<PillarActivationProgress>,
-    query: Query<(&Handle<StandardMaterial>, &UnlitPillar)>,
-    mut materials: ResMut<Assets<StandardMaterial>>,
-    time: Res<Time>,
-) {
-    if let Some((entity, progress)) = progress_res.0 {
-        if progress >= 1.0 {
-            progress_res.0 = None;
-
-            // activate pillar
-            commands
-                .entity(entity)
-                .remove::<UnlitPillar>()
-                .insert(LitPillar {
-                    created_at: time.seconds_since_startup(),
-                })
-                .insert(PointLight {
-                    color: Color::rgb(15.0, 15.0, 15.0),
-                    intensity: 500.0,
-                    ..Default::default()
-                });
-
-            if let Ok((handle, _)) = query.get(entity) {
-                if let Some(mat) = materials.get_mut(handle) {
-                    mat.base_color = Color::rgb(15.0, 15.0, 15.0);
-                    mat.emissive = Color::rgb(15.0, 15.0, 15.0);
-                }
-            }
-        } else {
-            if let Ok((handle, _)) = query.get(entity) {
-                if let Some(mat) = materials.get_mut(handle) {
-                    mat.base_color = Color::rgb(15.0, 15.0, 15.0) * progress;
-                    mat.emissive = Color::rgb(15.0, 15.0, 15.0) * progress;
-                }
-            }
-        }
-    }
-}
-
-pub fn decrease_pillar_strength(
-    mut commands: Commands,
-    mut query: Query<(
-        Entity,
-        &mut PointLight,
-        &Handle<StandardMaterial>,
-        &LitPillar,
-    )>,
-    mut materials: ResMut<Assets<StandardMaterial>>,
-    time: Res<Time>,
-) {
-    let t = time.seconds_since_startup();
-    for (entity, mut light, handle, pillar) in query.iter_mut() {
-        let d = t - pillar.created_at;
-        const DUR: f32 = 10.0;
-        let i = (DUR - d as f32) / DUR;
-
-        if i < 0.0 {
-            // deactivate pillar
-            commands
-                .entity(entity)
-                .remove::<LitPillar>()
-                .remove::<PointLight>()
-                .insert(UnlitPillar);
-
-            if let Some(mat) = materials.get_mut(handle) {
-                mat.base_color = Color::rgb(0.9, 0.9, 0.9);
-                mat.emissive = Color::rgb(0., 0., 0.);
-            }
-        } else {
-            light.intensity = i * 500.0;
-
-            if let Some(mat) = materials.get_mut(handle) {
-                mat.base_color = Color::rgb(15.0, 15.0, 15.0) * i.powf(1.3);
-                mat.emissive = Color::rgb(15.0, 15.0, 15.0) * i.powf(1.3);
-            }
-        }
-    }
-}
-
-pub struct PillarMaterials {
-    mesh: Handle<Mesh>,
-}
-impl FromWorld for PillarMaterials {
-    fn from_world(world: &mut World) -> Self {
-        let world = world.cell();
-        let mut meshes = world.get_resource_mut::<Assets<Mesh>>().unwrap();
-
-        let mesh = meshes.add(Mesh::from(shape::Box::new(SIZE, HEIGHT, SIZE)));
-
-        Self { mesh }
-    }
-}

src/player.rs

@@ -1,10 +1,8 @@
 use bevy::prelude::*;
 
-use crate::{camera::MouseCoords, illumination::Illumination, pillar::PillarActivationProgress};
+use crate::camera::MouseCoords;
 
-#[derive(Component)]
 pub struct Player;
-#[derive(Component)]
 pub struct PlayerLight {
     i: u8,
 }
@@ -27,22 +25,19 @@ pub fn spawn_player(
         .insert(Player);
 
     // light
+    let mut light_material: StandardMaterial = Color::rgb(0.737255, 0.560784, 0.560784).into();
+    light_material.metallic = 0.5;
+    light_material.reflectance = 0.5;
+    light_material.emissive = Color::rgb(7.52, 5.72, 5.72);
+    let light_material = materials.add(light_material);
+
     commands
         .spawn()
         .insert(LightFriends)
         .insert(Transform::default())
         .insert(GlobalTransform::default())
         .with_children(|children| {
-            let count = 6;
-            for i in 0..count {
-                let color = Color::hsl(360.0 * i as f32 / count as f32, 0.5, 0.5);
-
-                let mut light_material: StandardMaterial = color.into();
-                light_material.metallic = 0.5;
-                light_material.reflectance = 0.5;
-                light_material.emissive = color.as_rgba() * 10.0;
-                let light_material = materials.add(light_material);
-
+            for i in 0..6 {
                 children
                     .spawn_bundle(PbrBundle {
                         mesh: meshes.add(Mesh::from(shape::Icosphere {
@@ -53,21 +48,19 @@ pub fn spawn_player(
                         transform: Transform::from_xyz(0.0, 0.5, 0.0),
                         ..Default::default()
                     })
-                    .insert_bundle(PointLightBundle {
+                    .insert_bundle(LightBundle {
                         transform: Transform::from_xyz(0.0, 0.0, 0.0),
-                        point_light: PointLight {
-                            color: color.as_rgba() * 10.0,
+                        light: Light {
+                            color: Color::rgb(7.52, 5.72, 5.72),
                             ..Default::default()
                         },
                         ..Default::default()
                     })
-                    .insert(PlayerLight { i: i as u8 + 1 })
-                    .insert(Illumination { radius: 13.0 });
+                    .insert(PlayerLight { i: i as u8 + 1 });
             }
         });
 }
 
-#[derive(Component)]
 pub struct LightFriends;
 pub fn move_light_friends(
     mut query: Query<(&mut Transform, &LightFriends)>,
@@ -85,7 +78,7 @@ pub fn move_light_friends(
     for (mut trans, _light) in query.iter_mut() {
         // interpolate between player pos and mouse click pos
         let i = interpolation.0;
-        let center = i * coords.processed + (1.0 - i) * player_pos;
+        let center = i * coords.0 + (1.0 - i) * player_pos;
 
         let mut d = trans.translation - center;
         d.y = 0.0;
@@ -93,42 +86,15 @@ pub fn move_light_friends(
     }
 }
 
-#[derive(Default)]
-pub struct LightExcitationState(f32);
-pub fn update_light_excitation_state(
-    pillar_progress: Res<PillarActivationProgress>,
-    mut excitation: ResMut<LightExcitationState>,
-) {
-    // light pillar activation progress
-    let p = pillar_progress.0.map(|(_, p)| p).unwrap_or(0.0);
-
-    if p > excitation.0 {
-        excitation.0 = (excitation.0 + 0.008).clamp(0.0, 1.0);
-    } else {
-        excitation.0 = (excitation.0 - 0.008).clamp(0.0, 1.0);
-    }
-}
-
-pub fn light_movement(
-    mut query: Query<(&mut Transform, &PlayerLight)>,
-    time: Res<Time>,
-    interpolation: Res<FloatingOrbsInterpolationState>,
-    excitation: Res<LightExcitationState>,
-) {
+pub fn light_movement(mut query: Query<(&mut Transform, &PlayerLight)>, time: Res<Time>) {
     let t = time.seconds_since_startup();
-    let p = excitation.0;
-
-    // make the friends go further when the button is pressed, but close in when activating a pillar
-    let width = (5.0 + interpolation.0 * 7.0) * (1.0 - p);
-
-    let p = 1.0 + 0.8 * p as f64;
     for (mut trans, light) in query.iter_mut() {
         let i = light.i as f64;
         let i2 = i / 2.0;
         trans.translation = Vec3::new(
-            width * i2 as f32 * (t * 0.4 * i2 + i * p).cos() as f32,
-            3.0 * (t * 1.1 * i2 + i * p).sin() as f32 + 4.0,
-            width * (t * 0.4 * i + i * p).sin() as f32,
+            5.0 * i2 as f32 * (t * 0.4 * i2 + i).cos() as f32,
+            3.0 * (t * 1.1 * i2 + i).sin() as f32 + 4.0,
+            5.0 * (t * 0.4 * i + i).sin() as f32,
         );
     }
 }

src/rendering/mod.rs

@@ -0,0 +1,102 @@
+use bevy::app::{PluginGroup, PluginGroupBuilder};
+use bevy::pbr::render_graph::{LightsNode, PBR_PIPELINE_HANDLE};
+use bevy::prelude::*;
+use bevy::render::{
+    pipeline::PipelineDescriptor,
+    render_graph::{base, AssetRenderResourcesNode, RenderGraph, RenderResourcesNode},
+    shader::Shader,
+};
+
+mod pipeline;
+use pipeline::build_pbr_pipeline;
+
+pub struct CustomPlugins;
+impl PluginGroup for CustomPlugins {
+    fn build(&mut self, group: &mut PluginGroupBuilder) {
+        group.add(bevy::log::LogPlugin::default());
+        group.add(bevy::core::CorePlugin::default());
+        group.add(bevy::transform::TransformPlugin::default());
+        group.add(bevy::diagnostic::DiagnosticsPlugin::default());
+        group.add(bevy::input::InputPlugin::default());
+        group.add(bevy::window::WindowPlugin::default());
+        group.add(bevy::asset::AssetPlugin::default());
+        group.add(bevy::scene::ScenePlugin::default());
+
+        group.add(bevy::render::RenderPlugin::default());
+        group.add(bevy::sprite::SpritePlugin::default());
+        group.add(CustomPbrPlugin::default());
+        group.add(bevy::ui::UiPlugin::default());
+        group.add(bevy::text::TextPlugin::default());
+        group.add(bevy::gilrs::GilrsPlugin::default());
+        group.add(bevy::gltf::GltfPlugin::default());
+        group.add(bevy::winit::WinitPlugin::default());
+        group.add(bevy::wgpu::WgpuPlugin::default());
+    }
+}
+
+#[derive(Default)]
+pub struct CustomPbrPlugin;
+impl Plugin for CustomPbrPlugin {
+    fn build(&self, app: &mut AppBuilder) {
+        app.add_asset::<StandardMaterial>()
+            .register_type::<Light>()
+            .add_system_to_stage(
+                CoreStage::PostUpdate,
+                bevy::render::shader::asset_shader_defs_system::<StandardMaterial>.system(),
+            )
+            .init_resource::<bevy::pbr::AmbientLight>();
+        add_pbr_graph(app.world_mut());
+
+        // add default StandardMaterial
+        let mut materials = app
+            .world_mut()
+            .get_resource_mut::<Assets<StandardMaterial>>()
+            .unwrap();
+        materials.set_untracked(
+            Handle::<StandardMaterial>::default(),
+            StandardMaterial {
+                base_color: Color::PINK,
+                unlit: true,
+                ..Default::default()
+            },
+        );
+    }
+}
+
+/// the names of pbr graph nodes
+mod node {
+    pub const TRANSFORM: &str = "transform";
+    pub const STANDARD_MATERIAL: &str = "standard_material";
+    pub const LIGHTS: &str = "lights";
+}
+
+fn add_pbr_graph(world: &mut World) {
+    {
+        let mut graph = world.get_resource_mut::<RenderGraph>().unwrap();
+        graph.add_system_node(
+            node::TRANSFORM,
+            RenderResourcesNode::<GlobalTransform>::new(true),
+        );
+        graph.add_system_node(
+            node::STANDARD_MATERIAL,
+            AssetRenderResourcesNode::<StandardMaterial>::new(true),
+        );
+        graph.add_system_node(node::LIGHTS, LightsNode::new(30));
+
+        // TODO: replace these with "autowire" groups
+        graph
+            .add_node_edge(node::STANDARD_MATERIAL, base::node::MAIN_PASS)
+            .unwrap();
+        graph
+            .add_node_edge(node::TRANSFORM, base::node::MAIN_PASS)
+            .unwrap();
+        graph
+            .add_node_edge(node::LIGHTS, base::node::MAIN_PASS)
+            .unwrap();
+    }
+    let pipeline = build_pbr_pipeline(&mut world.get_resource_mut::<Assets<Shader>>().unwrap());
+    let mut pipelines = world
+        .get_resource_mut::<Assets<PipelineDescriptor>>()
+        .unwrap();
+    pipelines.set_untracked(PBR_PIPELINE_HANDLE, pipeline);
+}