clean up example

Author: IceSentry

examples/input/gpu_picking.rs

@@ -26,7 +26,7 @@ fn main() {
         // Add the plugin
         .add_plugin(GpuPickingPlugin)
         .add_systems(Startup, setup)
-        .add_systems(Update, (mouse_picking, save_buffer_to_file, move_cube))
+        .add_systems(Update, (mouse_picking, move_cube))
         .run();
 }
 
@@ -88,7 +88,7 @@ fn setup(
         GpuPickingMesh,
     ));
 
-    // opaque cube
+    // This cube will move from left to right. It shows that picking works correctly when things are moving.
     commands.spawn((
         PbrBundle {
             mesh: meshes.add(Mesh::from(shape::Cube { size: 1.0 })),
@@ -172,38 +172,6 @@ fn mouse_picking(
     }
 }
 
-// TODO remove before merging, this is just for testing purposes
-fn save_buffer_to_file(
-    keyboard_input: Res<Input<KeyCode>>,
-    gpu_picking_cameras: Query<(&GpuPickingCamera, &Camera)>,
-) {
-    if keyboard_input.just_pressed(KeyCode::P) {
-        for (i, (gpu_picking_camera, camera)) in gpu_picking_cameras.iter().enumerate() {
-            let mut data = vec![];
-            data.push("P3".to_string());
-            let size = camera.logical_viewport_size().unwrap();
-            data.push(format!("{} {}", size.x, size.y));
-            data.push("255".to_string());
-
-            for y in 0..=size.y as u32 {
-                for x in 0..=size.x as u32 {
-                    let entity = gpu_picking_camera.get_entity(UVec2::new(x, y));
-                    if entity.is_some() {
-                        data.push("255 0 0".to_string());
-                    } else {
-                        data.push("0 0 0".to_string());
-                    }
-                }
-            }
-
-            std::fs::write(format!("entity_out_{i}.ppm"), data.join("\n"))
-                .expect("Unable to write file");
-
-            println!("buffer saved to entity_out_{i}.ppm");
-        }
-    }
-}
-
 // You can also use a custom material with it, you just need to make sure it correctly outputs the entity id
 // See assets/shaders/gpu_picking_material.wgsl for more information
 #[derive(AsBindGroup, TypeUuid, TypePath, Debug, Clone)]
@@ -222,6 +190,8 @@ impl Material for GpuPickingMaterial {
 #[derive(Component)]
 struct MoveCube;
 
+// Moves a mesh from left to right
+// Used to show that picking works even if things are moving
 fn move_cube(
     mut q: Query<&mut Transform, With<MoveCube>>,
     time: Res<Time>,