Add basic Android support

README.md

@@ -2,6 +2,32 @@
 
 A work-in-progress life simulation game made with [Bevy](https://bevyengine.org).
 
+## Building
+
+### Desktop
+
+```bash
+cargo build --release
+```
+
+### Mobile
+
+Tested only on Android. It compiles and runs, but missing proper touch controls and gamepad support (`girls` doesn't support Android).
+
+1. Install [xbuild](https://github.com/rust-mobile/xbuild)
+2. Enable USB debugging on the device, connect it and allow access.
+3. Get its ID:
+
+```bash
+x devices
+```
+
+3. Build:
+
+```bash
+x build --release --device <device ID> -p project_harmonia
+```
+
 ## License
 
 The code licensed under [GNU Affero General Public License v3.0](./COPYING).

app/Cargo.toml

@@ -6,6 +6,11 @@ license.workspace = true
 authors.workspace = true
 repository.workspace = true
 
+[lib]
+name = "project_harmonia"
+# We need `cdylib` for Android and `lib` for everything else.
+crate-type = ["lib", "cdylib"]
+
 [dependencies]
 project_harmonia_base.workspace = true
 project_harmonia_widgets.workspace = true

app/manifest.yaml

@@ -0,0 +1,3 @@
+android:
+  assets:
+    - assets/base

app/src/lib.rs

@@ -0,0 +1,79 @@
+mod cli;
+mod cursor_controller;
+
+use avian3d::{prelude::*, sync::SyncConfig};
+use bevy::{
+    app::PluginGroupBuilder, core_pipeline::experimental::taa::TemporalAntiAliasPlugin,
+    pbr::wireframe::WireframePlugin, prelude::*, render::RenderPlugin,
+};
+use bevy_atmosphere::prelude::*;
+use bevy_enhanced_input::prelude::*;
+#[cfg(feature = "inspector")]
+use bevy_inspector_egui::quick::WorldInspectorPlugin;
+use bevy_mod_outline::OutlinePlugin;
+use bevy_replicon::prelude::*;
+use bevy_replicon_renet::RepliconRenetPlugins;
+use bevy_simple_text_input::TextInputPlugin;
+use project_harmonia_base::{game_world::navigation::Obstacle, CorePlugins};
+use project_harmonia_ui::UiPlugins;
+use project_harmonia_widgets::WidgetsPlugin;
+use vleue_navigator::prelude::*;
+
+use cli::{Cli, CliPlugin};
+use cursor_controller::CursorControllerPlugin;
+
+struct AppPlugins;
+
+impl PluginGroup for AppPlugins {
+    fn build(self) -> PluginGroupBuilder {
+        PluginGroupBuilder::start::<Self>()
+            .add(CliPlugin)
+            .add(CursorControllerPlugin)
+    }
+}
+
+// Separate entry point for Android, which doesn't use `main.rs`.
+#[bevy_main]
+pub fn main() {
+    let mut app = App::new();
+    app.init_resource::<Cli>()
+        .insert_resource(SyncConfig {
+            position_to_transform: false,
+            ..Default::default()
+        })
+        .add_plugins((
+            DefaultPlugins
+                .set(RenderPlugin {
+                    synchronous_pipeline_compilation: true,
+                    ..Default::default()
+                })
+                .set(WindowPlugin {
+                    primary_window: Some(Window {
+                        title: "Project Harmonia".to_string(),
+                        ..Default::default()
+                    }),
+                    ..Default::default()
+                }),
+            TemporalAntiAliasPlugin,
+            RepliconPlugins,
+            RepliconRenetPlugins,
+            WireframePlugin,
+            AtmospherePlugin,
+            EnhancedInputPlugin,
+            VleueNavigatorPlugin,
+            NavmeshUpdaterPlugin::<Collider, Obstacle>::default(),
+            PhysicsPlugins::default()
+                .build()
+                .disable::<CcdPlugin>()
+                .disable::<SleepingPlugin>(),
+            PhysicsDebugPlugin::default(),
+            TextInputPlugin,
+            OutlinePlugin,
+        ))
+        .add_plugins((CorePlugins, WidgetsPlugin, UiPlugins, AppPlugins));
+
+    #[cfg(feature = "inspector")]
+    app.add_plugins(WorldInspectorPlugin::default());
+
+    app.run();
+}

app/src/main.rs

@@ -1,77 +1,3 @@
-mod cli;
-mod cursor_controller;
-
-use avian3d::{prelude::*, sync::SyncConfig};
-use bevy::{
-    app::PluginGroupBuilder, core_pipeline::experimental::taa::TemporalAntiAliasPlugin,
-    pbr::wireframe::WireframePlugin, prelude::*, render::RenderPlugin,
-};
-use bevy_atmosphere::prelude::*;
-use bevy_enhanced_input::prelude::*;
-#[cfg(feature = "inspector")]
-use bevy_inspector_egui::quick::WorldInspectorPlugin;
-use bevy_mod_outline::OutlinePlugin;
-use bevy_replicon::prelude::*;
-use bevy_replicon_renet::RepliconRenetPlugins;
-use bevy_simple_text_input::TextInputPlugin;
-use project_harmonia_base::{game_world::navigation::Obstacle, CorePlugins};
-use project_harmonia_ui::UiPlugins;
-use project_harmonia_widgets::WidgetsPlugin;
-use vleue_navigator::prelude::*;
-
-use cli::{Cli, CliPlugin};
-use cursor_controller::CursorControllerPlugin;
-
-struct AppPlugins;
-
-impl PluginGroup for AppPlugins {
-    fn build(self) -> PluginGroupBuilder {
-        PluginGroupBuilder::start::<Self>()
-            .add(CliPlugin)
-            .add(CursorControllerPlugin)
-    }
-}
-
 fn main() {
-    let mut app = App::new();
-    app.init_resource::<Cli>()
-        .insert_resource(SyncConfig {
-            position_to_transform: false,
-            ..Default::default()
-        })
-        .add_plugins((
-            DefaultPlugins
-                .set(RenderPlugin {
-                    synchronous_pipeline_compilation: true,
-                    ..Default::default()
-                })
-                .set(WindowPlugin {
-                    primary_window: Some(Window {
-                        title: "Project Harmonia".to_string(),
-                        ..Default::default()
-                    }),
-                    ..Default::default()
-                }),
-            TemporalAntiAliasPlugin,
-            RepliconPlugins,
-            RepliconRenetPlugins,
-            WireframePlugin,
-            AtmospherePlugin,
-            EnhancedInputPlugin,
-            VleueNavigatorPlugin,
-            NavmeshUpdaterPlugin::<Collider, Obstacle>::default(),
-            PhysicsPlugins::default()
-                .build()
-                .disable::<CcdPlugin>()
-                .disable::<SleepingPlugin>(),
-            PhysicsDebugPlugin::default(),
-            TextInputPlugin,
-            OutlinePlugin,
-        ))
-        .add_plugins((CorePlugins, WidgetsPlugin, UiPlugins, AppPlugins));
-
-    #[cfg(feature = "inspector")]
-    app.add_plugins(WorldInspectorPlugin::default());
-
-    app.run();
+    project_harmonia::main();
 }