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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,36 @@ | ||
use proc_macro::TokenStream; | ||
use quote::quote; | ||
use syn::{parse_macro_input, ItemFn}; | ||
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pub fn bevy_main(_attr: TokenStream, item: TokenStream) -> TokenStream { | ||
let input = parse_macro_input!(item as ItemFn); | ||
if input.sig.ident != "main" { | ||
panic!("bevy_main can only be used on a function called 'main'") | ||
} | ||
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TokenStream::from(quote! { | ||
#[no_mangle] | ||
#[cfg(target_os = "android")] | ||
unsafe extern "C" fn ANativeActivity_onCreate( | ||
activity: *mut std::os::raw::c_void, | ||
saved_state: *mut std::os::raw::c_void, | ||
saved_state_size: usize, | ||
) { | ||
bevy::ndk_glue::init( | ||
activity as _, | ||
saved_state as _, | ||
saved_state_size as _, | ||
main, | ||
); | ||
} | ||
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#[no_mangle] | ||
#[cfg(target_os = "ios")] | ||
extern "C" fn main_rs() { | ||
main(); | ||
} | ||
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#[allow(unused)] | ||
#input | ||
}) | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -1,10 +1,45 @@ | ||
// Edit to run any single file example from Bevy. | ||
include!("../3d/3d_scene.rs"); | ||
use bevy::prelude::*; | ||
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#[cfg_attr( | ||
target_os = "android", | ||
ndk_glue::main(logger(level = "debug", tag = "android"), backtrace = "full") | ||
)] | ||
pub fn android_main() { | ||
main(); | ||
// the `bevy_main` proc_macro generates the required android boilerplate | ||
#[bevy_main] | ||
fn main() { | ||
App::build() | ||
.add_resource(Msaa { samples: 2 }) | ||
.add_plugins(DefaultPlugins) | ||
.add_startup_system(setup.system()) | ||
.run(); | ||
} | ||
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/// set up a simple 3D scene | ||
fn setup( | ||
commands: &mut Commands, | ||
mut meshes: ResMut<Assets<Mesh>>, | ||
mut materials: ResMut<Assets<StandardMaterial>>, | ||
) { | ||
// add entities to the world | ||
commands | ||
// plane | ||
.spawn(PbrComponents { | ||
mesh: meshes.add(Mesh::from(shape::Plane { size: 10.0 })), | ||
material: materials.add(Color::rgb(0.3, 0.5, 0.3).into()), | ||
..Default::default() | ||
}) | ||
// cube | ||
.spawn(PbrComponents { | ||
mesh: meshes.add(Mesh::from(shape::Cube { size: 1.0 })), | ||
material: materials.add(Color::rgb(0.8, 0.7, 0.6).into()), | ||
transform: Transform::from_translation(Vec3::new(0.0, 1.0, 0.0)), | ||
..Default::default() | ||
}) | ||
// light | ||
.spawn(LightComponents { | ||
transform: Transform::from_translation(Vec3::new(4.0, 8.0, 4.0)), | ||
..Default::default() | ||
}) | ||
// camera | ||
.spawn(Camera3dComponents { | ||
transform: Transform::from_translation(Vec3::new(-3.0, 5.0, 8.0)) | ||
.looking_at(Vec3::default(), Vec3::unit_y()), | ||
..Default::default() | ||
}); | ||
} |
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