From 2f8000e4a8566e7bb2a1bf579ca21487fb44153f Mon Sep 17 00:00:00 2001
From: Edgar Geier <geieredgar@gmail.com>
Date: Wed, 8 Feb 2023 03:57:12 +0100
Subject: [PATCH] feat: add render feature for headless mode (tilemaps only)
 (#159)

feat: add default feature render to support running headless by disabling it
---
 Cargo.toml     |  5 +++--
 src/systems.rs | 14 +++++++++-----
 2 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 79c3caa6..07035a36 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,7 @@ members = ["macros"]
 
 [dependencies]
 bevy_ecs_ldtk_macros = { version = "0.5.0", optional = true, path = "macros" }
-bevy_ecs_tilemap = "0.9"
+bevy_ecs_tilemap = { version = "0.9", default-features = false }
 bevy = { version = "0.9", default-features = false, features = ["bevy_sprite"] }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
@@ -30,9 +30,10 @@ bevy_rapier2d = "0.19"
 rand = "0.8"
 
 [features]
-default = ["derive"]
+default = ["derive", "render"]
 derive = ["bevy_ecs_ldtk_macros"]
 atlas = ["bevy_ecs_tilemap/atlas"]
+render = ["bevy_ecs_tilemap/render"]
 
 [[example]]
 name = "platformer"
diff --git a/src/systems.rs b/src/systems.rs
index 0ebbd999..e82ef7d6 100644
--- a/src/systems.rs
+++ b/src/systems.rs
@@ -1,12 +1,14 @@
 //! System functions used by the plugin for processing ldtk files.
 
+#[cfg(feature = "render")]
+use crate::resources::SetClearColor;
 use crate::{
     app::{LdtkEntityMap, LdtkIntCellMap},
     assets::{LdtkAsset, LdtkLevel},
     components::*,
     ldtk::TilesetDefinition,
     level::spawn_level,
-    resources::{LdtkSettings, LevelEvent, LevelSelection, LevelSpawnBehavior, SetClearColor},
+    resources::{LdtkSettings, LevelEvent, LevelSelection, LevelSpawnBehavior},
     utils::*,
 };
 
@@ -19,9 +21,9 @@ pub fn process_ldtk_assets(
     mut commands: Commands,
     mut ldtk_events: EventReader<AssetEvent<LdtkAsset>>,
     ldtk_world_query: Query<(Entity, &Handle<LdtkAsset>)>,
-    ldtk_settings: Res<LdtkSettings>,
-    mut clear_color: ResMut<ClearColor>,
-    ldtk_assets: Res<Assets<LdtkAsset>>,
+    #[cfg(feature = "render")] ldtk_settings: Res<LdtkSettings>,
+    #[cfg(feature = "render")] mut clear_color: ResMut<ClearColor>,
+    #[cfg(feature = "render")] ldtk_assets: Res<Assets<LdtkAsset>>,
 ) {
     let mut ldtk_handles_to_respawn = HashSet::new();
     let mut ldtk_handles_for_clear_color = HashSet::new();
@@ -46,6 +48,7 @@ pub fn process_ldtk_assets(
         }
     }
 
+    #[cfg(feature = "render")]
     if ldtk_settings.set_clear_color == SetClearColor::FromEditorBackground {
         for handle in ldtk_handles_for_clear_color.iter() {
             if let Some(ldtk_asset) = ldtk_assets.get(handle) {
@@ -67,7 +70,7 @@ pub fn apply_level_selection(
     ldtk_settings: Res<LdtkSettings>,
     ldtk_assets: Res<Assets<LdtkAsset>>,
     mut level_set_query: Query<(&Handle<LdtkAsset>, &mut LevelSet)>,
-    mut clear_color: ResMut<ClearColor>,
+    #[cfg(feature = "render")] mut clear_color: ResMut<ClearColor>,
 ) {
     if let Some(level_selection) = level_selection {
         for (ldtk_handle, mut level_set) in level_set_query.iter_mut() {
@@ -92,6 +95,7 @@ pub fn apply_level_selection(
                     if *level_set != new_level_set {
                         *level_set = new_level_set;
 
+                        #[cfg(feature = "render")]
                         if ldtk_settings.set_clear_color == SetClearColor::FromLevelBackground {
                             clear_color.0 = level.bg_color;
                         }