Add initial plugin creating a 256x256 texture

src/falling_sand/mod.rs

@@ -0,0 +1,42 @@
+use bevy::{
+    app::{Plugin, Startup},
+    asset::Assets,
+    ecs::system::{Commands, ResMut},
+    math::Vec3,
+    prelude::*,
+    render::{
+        render_resource::{Extent3d, TextureDimension, TextureFormat},
+        texture::Image,
+    },
+    sprite::SpriteBundle,
+    transform::components::Transform,
+};
+
+pub struct FallingSandPlugin;
+
+impl Plugin for FallingSandPlugin {
+    fn build(&self, app: &mut bevy::prelude::App) {
+        app.add_systems(Startup, setup);
+    }
+}
+
+fn setup(mut commands: Commands, mut images: ResMut<Assets<Image>>) {
+    let image = Image::new_fill(
+        Extent3d {
+            width: 256,
+            height: 256,
+            depth_or_array_layers: 1,
+        },
+        TextureDimension::D2,
+        &[25, 24, 26, 255],
+        TextureFormat::Rgba8UnormSrgb,
+    );
+
+    let image_handle = images.add(image);
+
+    commands.spawn(SpriteBundle {
+        texture: image_handle,
+        transform: Transform::from_translation(Vec3::new(256., 0., 0.)),
+        ..default()
+    });
+}

src/main.rs

@@ -1,3 +1,5 @@
+mod falling_sand;
+
 use bevy::{prelude::*, window::PresentMode};
 
 fn main() {
@@ -17,6 +19,7 @@ fn main() {
                 .set(window_plugin)
                 .set(ImagePlugin::default_nearest()),
         )
+        .add_plugins(falling_sand::FallingSandPlugin)
         .add_systems(Startup, setup)
         .insert_resource(ClearColor(Color::rgb_u8(45, 42, 46)))
         .run();