Fix headless mode compilation.

.github/workflows/ci.yml

@@ -36,6 +36,12 @@ jobs:
           command: check
           args: --all-targets --features atlas
 
+      - name: Run cargo check headless
+        uses: actions-rs/cargo@v1
+        with:
+          command: check
+          args: --all-targets --no-default-features
+
 #   test:
 #     name: Tests
 #     strategy:

examples/basic.rs

@@ -6,7 +6,9 @@ mod helpers;
 fn startup(
     mut commands: Commands,
     asset_server: Res<AssetServer>,
-    #[cfg(not(feature = "atlas"))] array_texture_loader: Res<ArrayTextureLoader>,
+    #[cfg(all(not(feature = "atlas"), feature = "render"))] array_texture_loader: Res<
+        ArrayTextureLoader,
+    >,
 ) {
     commands.spawn(Camera2dBundle::default());
 
@@ -60,7 +62,7 @@ fn startup(
 
     // Add atlas to array texture loader so it's preprocessed before we need to use it.
     // Only used when the atlas feature is off and we are using array textures.
-    #[cfg(not(feature = "atlas"))]
+    #[cfg(all(not(feature = "atlas"), feature = "render"))]
     {
         array_texture_loader.add(TilemapArrayTexture {
             texture: TilemapTexture::Single(asset_server.load("tiles.png")),

src/array_texture_preload.rs

@@ -1,4 +1,3 @@
-#[cfg(feature = "render")]
 use crate::render::{DefaultSampler, TextureArrayCache};
 use crate::{
     prelude::{TilemapSpacing, TilemapTileSize},
@@ -8,7 +7,6 @@ use bevy::render::{
     render_resource::{FilterMode, TextureFormat},
     texture::BevyDefault,
 };
-#[cfg(feature = "render")]
 use bevy::{
     prelude::{Assets, Image, Res, ResMut, Resource},
     render::Extract,
@@ -60,7 +58,6 @@ impl ArrayTextureLoader {
     }
 }
 
-#[cfg(feature = "render")]
 pub(crate) fn extract(
     images: Extract<Res<Assets<Image>>>,
     array_texture_loader: Extract<Res<ArrayTextureLoader>>,

src/lib.rs

@@ -32,7 +32,7 @@ use tiles::{
 use bevy::render::{RenderApp, RenderStage};
 
 /// A module that allows pre-loading of atlases into array textures.
-#[cfg(not(feature = "atlas"))]
+#[cfg(all(not(feature = "atlas"), feature = "render"))]
 mod array_texture_preload;
 /// A module which provides helper functions.
 pub mod helpers;
@@ -114,7 +114,7 @@ pub struct TilemapBundle {
 
 /// A module which exports commonly used dependencies.
 pub mod prelude {
-    #[cfg(not(feature = "atlas"))]
+    #[cfg(all(not(feature = "atlas"), feature = "render"))]
     pub use crate::array_texture_preload::*;
     pub use crate::helpers::filling::*;
     pub use crate::helpers::geometry::*;