From 9752f39736b940f5f4e363db26739b2563c1fdd0 Mon Sep 17 00:00:00 2001
From: Paul Sajna <hello@paulsajna.com>
Date: Wed, 21 Jun 2023 01:17:41 -0700
Subject: [PATCH] headless bevy

---
 crates/programs/bevy-experiments/Cargo.lock  | 133 ++++-
 crates/programs/bevy-experiments/Cargo.toml  |  11 +-
 crates/programs/bevy-experiments/src/main.rs | 561 ++++---------------
 3 files changed, 242 insertions(+), 463 deletions(-)

diff --git a/crates/programs/bevy-experiments/Cargo.lock b/crates/programs/bevy-experiments/Cargo.lock
index 869b154820..bb13c40d93 100644
--- a/crates/programs/bevy-experiments/Cargo.lock
+++ b/crates/programs/bevy-experiments/Cargo.lock
@@ -273,6 +273,15 @@ dependencies = [
  "bevy_internal",
 ]
 
+[[package]]
+name = "bevy-experiments"
+version = "0.1.0"
+dependencies = [
+ "bevy",
+ "bevy_framepace",
+ "bevy_image_export",
+]
+
 [[package]]
 name = "bevy_a11y"
 version = "0.10.1"
@@ -468,6 +477,16 @@ dependencies = [
  "encase_derive_impl",
 ]
 
+[[package]]
+name = "bevy_framepace"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1825c5a485aa2a2ffd91cc1faa1f4d621c804a893ead88cafedbe1ed6c51d34"
+dependencies = [
+ "bevy",
+ "spin_sleep",
+]
+
 [[package]]
 name = "bevy_gilrs"
 version = "0.10.1"
@@ -525,6 +544,20 @@ dependencies = [
  "smallvec",
 ]
 
+[[package]]
+name = "bevy_image_export"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bdcb6aae8af3981628eb120cad4cc348f7012c13323b089e184dbc8d87c4dfcd"
+dependencies = [
+ "bevy",
+ "bytemuck",
+ "futures",
+ "futures-lite",
+ "image",
+ "wgpu",
+]
+
 [[package]]
 name = "bevy_input"
 version = "0.10.1"
@@ -1442,12 +1475,48 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "futures"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23342abe12aba583913b2e62f22225ff9c950774065e4bfb61a19cd9770fec40"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "futures-executor",
+ "futures-io",
+ "futures-sink",
+ "futures-task",
+ "futures-util",
+]
+
+[[package]]
+name = "futures-channel"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "955518d47e09b25bbebc7a18df10b81f0c766eaf4c4f1cccef2fca5f2a4fb5f2"
+dependencies = [
+ "futures-core",
+ "futures-sink",
+]
+
 [[package]]
 name = "futures-core"
 version = "0.3.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4bca583b7e26f571124fe5b7561d49cb2868d79116cfa0eefce955557c6fee8c"
 
+[[package]]
+name = "futures-executor"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccecee823288125bd88b4d7f565c9e58e41858e47ab72e8ea2d64e93624386e0"
+dependencies = [
+ "futures-core",
+ "futures-task",
+ "futures-util",
+]
+
 [[package]]
 name = "futures-io"
 version = "0.3.28"
@@ -1469,6 +1538,47 @@ dependencies = [
  "waker-fn",
 ]
 
+[[package]]
+name = "futures-macro"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.18",
+]
+
+[[package]]
+name = "futures-sink"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f43be4fe21a13b9781a69afa4985b0f6ee0e1afab2c6f454a8cf30e2b2237b6e"
+
+[[package]]
+name = "futures-task"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76d3d132be6c0e6aa1534069c705a74a5997a356c0dc2f86a47765e5617c5b65"
+
+[[package]]
+name = "futures-util"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26b01e40b772d54cf6c6d721c1d1abd0647a0106a12ecaa1c186273392a69533"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "futures-io",
+ "futures-macro",
+ "futures-sink",
+ "futures-task",
+ "memchr",
+ "pin-project-lite",
+ "pin-utils",
+ "slab",
+]
+
 [[package]]
 name = "fxhash"
 version = "0.2.1"
@@ -2388,6 +2498,12 @@ version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e0a7ae3ac2f1173085d398531c705756c94a4c56843785df85a60c1a0afac116"
 
+[[package]]
+name = "pin-utils"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
+
 [[package]]
 name = "pkg-config"
 version = "0.3.27"
@@ -2673,6 +2789,16 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "spin_sleep"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cafa7900db085f4354dbc7025e25d7a839a14360ea13b5fc4fd717f2d3b23134"
+dependencies = [
+ "once_cell",
+ "winapi",
+]
+
 [[package]]
 name = "spirv"
 version = "0.2.0+1.5.4"
@@ -2742,13 +2868,6 @@ dependencies = [
  "slotmap",
 ]
 
-[[package]]
-name = "temp-bevy"
-version = "0.1.0"
-dependencies = [
- "bevy",
-]
-
 [[package]]
 name = "termcolor"
 version = "1.2.0"
diff --git a/crates/programs/bevy-experiments/Cargo.toml b/crates/programs/bevy-experiments/Cargo.toml
index eb06634e7c..7d28c9777d 100644
--- a/crates/programs/bevy-experiments/Cargo.toml
+++ b/crates/programs/bevy-experiments/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-name = "temp-bevy"
+name = "bevy-experiments"
 version = "0.1.0"
 edition = "2021"
 
@@ -7,7 +7,10 @@ edition = "2021"
 
 [dependencies]
 bevy = "0.10.1"
+bevy_framepace = "0.12.1"
+bevy_image_export = "0.7.2"
+
+#[profile.release]
+#opt-level = "z"
+#lto = "fat"
 
-[profile.release]
-opt-level = "z"
-lto = "fat"
diff --git a/crates/programs/bevy-experiments/src/main.rs b/crates/programs/bevy-experiments/src/main.rs
index 2210f21930..55cbd68c89 100644
--- a/crates/programs/bevy-experiments/src/main.rs
+++ b/crates/programs/bevy-experiments/src/main.rs
@@ -1,235 +1,62 @@
-//! Loads and renders a glTF file as a scene.
-
-use std::f32::consts::*;
 use core::time::Duration;
 
 use bevy::{
     pbr::{CascadeShadowConfigBuilder, DirectionalLightShadowMap},
     prelude::*,
-    scene::SceneInstance,
     animation::{AnimationClip, AnimationPlayer},
 };
 
-
-
 use bevy::{
-    input::mouse::MouseMotion,
+    render::{
+        camera::RenderTarget,
+        render_resource::{
+            Extent3d, TextureDescriptor, TextureDimension, TextureFormat, TextureUsages,
+        },
+    },
 };
 
+use bevy_image_export::{ImageExportPlugin, ImageExportSource, ImageExportBundle};
+use bevy::winit::WinitPlugin;
+use bevy::app::ScheduleRunnerSettings;
+use bevy::app::ScheduleRunnerPlugin;
+use bevy::app::AppExit;
+
+// number of frames after which the application exits
+const DESIRED_FRAME_COUNT: u32 = 120;
+
 fn main() {
+    let export_plugin = ImageExportPlugin::default();
+    let export_threads = export_plugin.threads.clone();
     App::new()
         .insert_resource(AmbientLight {
             color: Color::WHITE,
             brightness: 1.0 / 5.0f32,
         })
         .insert_resource(DirectionalLightShadowMap { size: 4096 })
-        .add_plugins(DefaultPlugins)
+        .insert_resource(ScheduleRunnerSettings::run_loop(Duration::from_secs_f64(0.0)))
+        .add_plugins(DefaultPlugins.build().disable::<WinitPlugin>())
+        .add_plugin(ScheduleRunnerPlugin)
+        .add_plugin(export_plugin)
         .add_startup_system(setup)
-        .add_system(setup_scene_once_loaded)
-        //.add_system(animate_light_direction)
-        //.add_system(animate_model_direction)
-        .add_system(keyboard_animation_control)
-        .add_system(camera_controller)
-        .add_system(text_update_system)
+        .add_system(update)
         .run();
+    export_threads.finish();
 }
 
 #[derive(Resource)]
 struct Animations(Vec<Handle<AnimationClip>>);
 
-#[derive(Component)]
-struct PosText;
-
-#[derive(Component)]
-struct RotText;
-
-#[derive(Component)]
-struct MainCamera;
-
 fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
-
-        
     commands.insert_resource(Animations(vec![
         asset_server.load("Roko_Anim_Wave_noOptimization.glb#Animation0"),
     ]));
 
 
-    commands.spawn((
-        Camera3dBundle {
-            transform: Transform::from_xyz(0.0, 1.5, 1.5),
-            //transform: Transform {
-                //translation: Vec3::new(0.0, -10.0, 5.0),
-                //rotation: Quat::from_xyzw(0.574, 0.0, 0.0, 0.819),
-                //scale: Vec3::new(1.0, 1.0, 1.0),
-            //},
-            //projection: Projection::Orthographic(OrthographicProjection{
-                    //near: 0.1,
-                    //far: 100.0,
-                    //scale: 7.312,
-                    //..default()
-                //}
-            //),
-            ..default()
-        },
-        MainCamera,
-        CameraController::default(),
-        EnvironmentMapLight {
-            diffuse_map: asset_server.load("pisa_diffuse_rgb9e5_zstd.ktx2"),
-            specular_map: asset_server.load("pisa_specular_rgb9e5_zstd.ktx2"),
-        },
-    ));
-
-        commands.spawn((
-            TextBundle::from_sections([
-                TextSection::new(
-                    "Position: ",
-                    TextStyle {
-                        font: asset_server.load("fonts/FiraSans-Bold.ttf"),
-                        font_size: 20.0,
-                        color: Color::WHITE,
-                    },
-                ),
-                TextSection::new(
-                    "X: ",
-                    TextStyle {
-                        font: asset_server.load("fonts/FiraSans-Bold.ttf"),
-                        font_size: 20.0,
-                        color: Color::WHITE,
-                    },
-                ),
-                TextSection::from_style(TextStyle {
-                    font: asset_server.load("fonts/FiraMono-Medium.ttf"),
-                    font_size: 20.0,
-                    color: Color::GOLD,
-                }),
-                TextSection::new(
-                    "Y: ",
-                    TextStyle {
-                        font: asset_server.load("fonts/FiraSans-Bold.ttf"),
-                        font_size: 20.0,
-                        color: Color::WHITE,
-                    },
-                ),
-                TextSection::from_style(TextStyle {
-                    font: asset_server.load("fonts/FiraMono-Medium.ttf"),
-                    font_size: 20.0,
-                    color: Color::GOLD,
-                }),
-                TextSection::new(
-                    "Z: ",
-                    TextStyle {
-                        font: asset_server.load("fonts/FiraSans-Bold.ttf"),
-                        font_size: 20.0,
-                        color: Color::WHITE,
-                    },
-                ),
-                TextSection::from_style(TextStyle {
-                    font: asset_server.load("fonts/FiraMono-Medium.ttf"),
-                    font_size: 20.0,
-                    color: Color::GOLD,
-                }),
-         
-            ]).with_style(
-                Style {
-                    position_type: PositionType::Absolute,
-                    position: UiRect {
-                        right: Val::Px(00.0),
-                        ..default()
-                    },
-                    ..default()
-                }
-            ),
-
-            PosText,
-        ));
-
-        commands.spawn((
-            TextBundle::from_sections([
-                TextSection::new(
-                    "Rotation: ",
-                    TextStyle {
-                        font: asset_server.load("fonts/FiraSans-Bold.ttf"),
-                        font_size: 20.0,
-                        color: Color::WHITE,
-                    },
-                ),
-                TextSection::new(
-                    "X: ",
-                    TextStyle {
-                        font: asset_server.load("fonts/FiraSans-Bold.ttf"),
-                        font_size: 20.0,
-                        color: Color::WHITE,
-                    },
-                ),
-                TextSection::from_style(TextStyle {
-                    font: asset_server.load("fonts/FiraMono-Medium.ttf"),
-                    font_size: 20.0,
-                    color: Color::GOLD,
-                }),
-                TextSection::new(
-                    "Y: ",
-                    TextStyle {
-                        font: asset_server.load("fonts/FiraSans-Bold.ttf"),
-                        font_size: 20.0,
-                        color: Color::WHITE,
-                    },
-                ),
-                TextSection::from_style(TextStyle {
-                    font: asset_server.load("fonts/FiraMono-Medium.ttf"),
-                    font_size: 20.0,
-                    color: Color::GOLD,
-                }),
-                TextSection::new(
-                    "Z: ",
-                    TextStyle {
-                        font: asset_server.load("fonts/FiraSans-Bold.ttf"),
-                        font_size: 20.0,
-                        color: Color::WHITE,
-                    },
-                ),
-                TextSection::from_style(TextStyle {
-                    font: asset_server.load("fonts/FiraMono-Medium.ttf"),
-                    font_size: 20.0,
-                    color: Color::GOLD,
-                }),
-                TextSection::new(
-                    "W: ",
-                    TextStyle {
-                        font: asset_server.load("fonts/FiraSans-Bold.ttf"),
-                        font_size: 20.0,
-                        color: Color::WHITE,
-                    },
-                ),
-                TextSection::from_style(TextStyle {
-                    font: asset_server.load("fonts/FiraMono-Medium.ttf"),
-                    font_size: 20.0,
-                    color: Color::GOLD,
-                }),
-            ]).with_style(
-                Style {
-                    position_type: PositionType::Absolute,
-                    position: UiRect {
-                        top: Val::Px(20.0),
-                        right: Val::Px(00.0),
-                        ..default()
-                    },
-                    ..default()
-                }
-            ),
-            RotText,
-        ));
-
-
-
     commands.spawn(DirectionalLightBundle {
         directional_light: DirectionalLight {
             shadows_enabled: true,
             ..default()
         },
-        // This is a relatively small scene, so use tighter shadow
-        // cascade bounds than the default for better quality.
-        // We also adjusted the shadow map to be larger since we're
-        // only using a single cascade.
         cascade_shadow_config: CascadeShadowConfigBuilder {
             num_cascades: 1,
             maximum_distance: 1.6,
@@ -243,276 +70,106 @@ fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
         },
         ..default()
     });
-    commands.spawn(SceneBundle {
-        scene: asset_server.load("Roko_nogamerig.glb#Scene0"),
-        transform: Transform::from_xyz(0.0, 0.0, 0.0),
-        //transform: Transform::from_rotation(Quat::from_rotation_x(3.14)),
-        ..default()
-    });
 
-    //commands.spawn(AnimationPlayer::default());
+    commands.spawn((
+        SceneBundle {
+            scene: asset_server.load("Roko_nogamerig.glb#Scene0"),
+            transform: Transform::from_xyz(0.0, 0.0, 0.0),
+            ..default()
+        }, 
+        Roko
+    ));
 
 }
 
-fn animate_light_direction(
-    time: Res<Time>,
-    mut query: Query<&mut Transform, With<DirectionalLight>>,
-) {
-    for mut transform in &mut query {
-        transform.rotation = Quat::from_euler(
-            EulerRot::ZYX,
-            0.0,
-            1.0 * PI,
-            -FRAC_PI_4,
-        );
-    }
-}
-
-fn animate_model_direction(
-    time: Res<Time>,
-    mut query: Query<&mut Transform, With<SceneInstance>>,
-) {
-    for mut transform in &mut query {
-        transform.rotation = Quat::from_euler(
-            EulerRot::XYZ,
-            0.0,
-            1.0 * PI,
-            0.0,
-        );
-    }
-}
-
-// Once the scene is loaded, start the animation
-fn setup_scene_once_loaded(
-    animations: Res<Animations>,
-    mut player: Query<&mut AnimationPlayer>,
-    mut done: Local<bool>,
-) {
-    if !*done {
-        if let Ok(mut player) = player.get_single_mut() {
-            player.play(animations.0[0].clone_weak()).repeat();
-            *done = true;
-        }
-    }
-}
-
-//fn play_animation(
-    //mut animation_player: Query<&mut AnimationPlayer>,
-    //animations: Res<Animations>,
-    //mut done: Local<bool>,
-    //time: Res<Time>,
-    //assets: Res<Assets<AnimationClip>>,
-//) {
-    //if !*done {
-        //if let Ok(mut player) = animation_player.get_single_mut() {
-            ////println!("{:#?}", *assets.get(&animations.0[0]).unwrap().curves());
-            //player.play(animations.0[0].clone_weak()).repeat();
-            //*done = true;
-        //} else {
-            //println!("fail?!");
-        //}
-    //}
-
-
-fn keyboard_animation_control(
-    keyboard_input: Res<Input<KeyCode>>,
-    mut animation_player: Query<&mut AnimationPlayer>,
-    animations: Res<Animations>,
-    mut current_animation: Local<usize>,
-) {
-    if let Ok(mut player) = animation_player.get_single_mut() {
-        if keyboard_input.just_pressed(KeyCode::Space) {
-            if player.is_paused() {
-                player.resume();
-            } else {
-                player.pause();
-            }
-        }
-
-        if keyboard_input.just_pressed(KeyCode::Up) {
-            let speed = player.speed();
-            player.set_speed(speed * 1.2);
-        }
-
-        if keyboard_input.just_pressed(KeyCode::Down) {
-            let speed = player.speed();
-            player.set_speed(speed * 0.8);
-        }
-
-        if keyboard_input.just_pressed(KeyCode::Left) {
-            let elapsed = player.elapsed();
-            player.set_elapsed(elapsed - 0.1);
-        }
-
-        if keyboard_input.just_pressed(KeyCode::Right) {
-            let elapsed = player.elapsed();
-            player.set_elapsed(elapsed + 0.1);
-        }
-
-        if keyboard_input.just_pressed(KeyCode::Return) {
-            *current_animation = (*current_animation + 1) % animations.0.len();
-            player
-                .play_with_transition(
-                    animations.0[*current_animation].clone_weak(),
-                    Duration::from_millis(250),
-                )
-                .repeat();
-        }
-    }
-}
 
 #[derive(Component)]
-pub struct CameraController {
-    pub enabled: bool,
-    pub initialized: bool,
-    pub sensitivity: f32,
-    pub key_forward: KeyCode,
-    pub key_back: KeyCode,
-    pub key_left: KeyCode,
-    pub key_right: KeyCode,
-    pub key_up: KeyCode,
-    pub key_down: KeyCode,
-    pub key_run: KeyCode,
-    pub mouse_key_enable_mouse: MouseButton,
-    pub keyboard_key_enable_mouse: KeyCode,
-    pub walk_speed: f32,
-    pub run_speed: f32,
-    pub friction: f32,
-    pub pitch: f32,
-    pub yaw: f32,
-    pub velocity: Vec3,
-}
+struct Roko;
 
-impl Default for CameraController {
-    fn default() -> Self {
-        Self {
-            enabled: true,
-            initialized: false,
-            sensitivity: 0.5,
-            key_forward: KeyCode::W,
-            key_back: KeyCode::S,
-            key_left: KeyCode::A,
-            key_right: KeyCode::D,
-            key_up: KeyCode::E,
-            key_down: KeyCode::Q,
-            key_run: KeyCode::LShift,
-            mouse_key_enable_mouse: MouseButton::Left,
-            keyboard_key_enable_mouse: KeyCode::M,
-            walk_speed: 2.0,
-            run_speed: 6.0,
-            friction: 0.5,
-            pitch: 0.0,
-            yaw: 0.0,
-            velocity: Vec3::ZERO,
-        }
-    }
-}
+#[derive(Component)]
+struct ExportBundleMarker;
+
+fn update(
+    mut commands: Commands,
+    export_bundles: Query<Entity, With<ExportBundleMarker>>,
+    _roko: Query<Entity, With<Roko>>,
+    mut frame: Local<u32>,
+    mut exit: EventWriter<AppExit>,
+	mut animation_player: Query<&mut AnimationPlayer>,
+	animations: Res<Animations>,
+	mut anim_started: Local<bool>,
+	mut img_exp_started: Local<bool>,
+    mut images: ResMut<Assets<Image>>,
+    mut export_sources: ResMut<Assets<ImageExportSource>>
 
-pub fn camera_controller(
-    time: Res<Time>,
-    mut mouse_events: EventReader<MouseMotion>,
-    mouse_button_input: Res<Input<MouseButton>>,
-    key_input: Res<Input<KeyCode>>,
-    mut move_toggled: Local<bool>,
-    mut query: Query<(&mut Transform, &mut CameraController), With<Camera>>,
 ) {
-    let dt = time.delta_seconds();
+    if !*anim_started {
+		if let Ok(mut player) = animation_player.get_single_mut() {
+			player.play(animations.0[0].clone_weak());//.repeat();
+			*anim_started = true;
+		}
+	}
 
-    if let Ok((mut transform, mut options)) = query.get_single_mut() {
-        if !options.initialized {
-            let (yaw, pitch, _roll) = transform.rotation.to_euler(EulerRot::YXZ);
-            options.yaw = yaw;
-            options.pitch = pitch;
-            options.initialized = true;
-        }
-        if !options.enabled {
-            return;
-        }
-
-        // Handle key input
-        let mut axis_input = Vec3::ZERO;
-        if key_input.pressed(options.key_forward) {
-            axis_input.z += 1.0;
-        }
-        if key_input.pressed(options.key_back) {
-            axis_input.z -= 1.0;
-        }
-        if key_input.pressed(options.key_right) {
-            axis_input.x += 1.0;
-        }
-        if key_input.pressed(options.key_left) {
-            axis_input.x -= 1.0;
-        }
-        if key_input.pressed(options.key_up) {
-            axis_input.y += 1.0;
-        }
-        if key_input.pressed(options.key_down) {
-            axis_input.y -= 1.0;
-        }
-        if key_input.just_pressed(options.keyboard_key_enable_mouse) {
-            *move_toggled = !*move_toggled;
-        }
-
-        // Apply movement update
-        if axis_input != Vec3::ZERO {
-            let max_speed = if key_input.pressed(options.key_run) {
-                options.run_speed
-            } else {
-                options.walk_speed
+    // wait for the animation to start before we start exporting images
+    // (tryna avoid t-pose frames)
+    if let Ok(player) = animation_player.get_single() {
+      if *anim_started && !*img_exp_started && player.elapsed() >= 1.0 / 24.0 {
+        let output_texture_handle = {
+            let size = Extent3d {
+                width: 1920,
+                height: 1080,
+                ..default()
             };
-            options.velocity = axis_input.normalize() * max_speed;
-        } else {
-            let friction = options.friction.clamp(0.0, 1.0);
-            options.velocity *= 1.0 - friction;
-            if options.velocity.length_squared() < 1e-6 {
-                options.velocity = Vec3::ZERO;
-            }
-        }
-        let forward = transform.forward();
-        let right = transform.right();
-        transform.translation += options.velocity.x * dt * right
-            + options.velocity.y * dt * Vec3::Y
-            + options.velocity.z * dt * forward;
+            let mut export_texture = Image {
+                texture_descriptor: TextureDescriptor {
+                    label: None,
+                    size,
+                    dimension: TextureDimension::D2,
+                    format: TextureFormat::Rgba8UnormSrgb,
+                    mip_level_count: 1,
+                    sample_count: 1,
+                    usage: TextureUsages::COPY_DST
+                        | TextureUsages::COPY_SRC
+                        | TextureUsages::RENDER_ATTACHMENT,
+                    view_formats: &[],
+                },
+                ..default()
+            };
+            export_texture.resize(size);
 
-        // Handle mouse input
-        let mut mouse_delta = Vec2::ZERO;
-        if mouse_button_input.pressed(options.mouse_key_enable_mouse) || *move_toggled {
-            for mouse_event in mouse_events.iter() {
-                mouse_delta += mouse_event.delta;
-            }
+            images.add(export_texture)
+        };
+
+
+            commands.spawn(Camera3dBundle {
+                transform: Transform::from_xyz(0.0, 1.5, 1.5),
+                camera: Camera {
+                    target: RenderTarget::Image(output_texture_handle.clone()),
+                    ..default()
+                },
+                ..default()
+            });
+
+            commands.spawn((
+                ImageExportBundle {
+                    source: export_sources.add(bevy_image_export::ImageExportSource(output_texture_handle)),
+                    ..default()
+                },
+                ExportBundleMarker,
+            ));
+            *img_exp_started = true;
         }
 
-        if mouse_delta != Vec2::ZERO {
-            // Apply look update
-            options.pitch = (options.pitch - mouse_delta.y * 0.5 * options.sensitivity * dt)
-                .clamp(-PI / 2., PI / 2.);
-            options.yaw -= mouse_delta.x * options.sensitivity * dt;
-            transform.rotation = Quat::from_euler(EulerRot::ZYX, 0.0, options.yaw, options.pitch);
-        }
+
+        if *frame == DESIRED_FRAME_COUNT {
+            commands.entity(export_bundles.single()).despawn();
+            exit.send(AppExit);
+        } 
+
+
+        if *img_exp_started  {
+            *frame += 1;
+        }    
     }
 }
 
-fn text_update_system(camera_q: Query<(&Camera, &GlobalTransform), With<MainCamera>>,
-    windows: Query<&mut Window>,
-    mut pos_text: Query<&mut Text, With<PosText>>,
-    mut rot_text: Query<&mut Text, Without<PosText>>
-) {
-    let (camera, camera_transform) = camera_q.single();
-    let window = windows.get_single().unwrap();
-    let transform = camera_transform.compute_transform();
-
-    let position = transform.translation;
-    let rotation = transform.rotation;
-    for mut text in &mut pos_text {
-        text.sections[2].value = format!("{:.2} ", position.x);
-        text.sections[4].value = format!("{:.2} ", position.y);
-        text.sections[6].value = format!("{:.2} ", position.z);
-    }
-    for mut text in &mut rot_text {
-        text.sections[2].value = format!("{:.4} ", rotation.x);
-        text.sections[4].value = format!("{:.4} ", rotation.y);
-        text.sections[6].value = format!("{:.4} ", rotation.z);
-        text.sections[8].value = format!("{:.4} ", rotation.w);
-    }
-    
-}