An initial xcode setup for using xcode (#539)

An example of bevy using xcode

.github/workflows/ios.yml

@@ -0,0 +1,36 @@
+name: iOS cron CI
+
+on:
+  schedule:
+    - cron:  '0 0 * * *'
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    runs-on: macOS-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+
+      - uses: actions/cache@v2
+        with:
+          path: |
+            target
+          key: ${{ runner.os }}-cargo-check-test-${{ matrix.toolchain }}-${{ hashFiles('**/Cargo.lock') }}
+
+      - uses: actions-rs/install@v0.1
+        with:
+          crate: cargo-lipo
+          version: latest
+
+      - name: Add iOS targets
+        run: rustup target add aarch64-apple-ios x86_64-apple-ios
+
+      - name: Build and install iOS app in iOS Simulator.
+        run: cd examples/ios && make install

Cargo.toml

@@ -51,7 +51,7 @@ wayland = ["bevy_winit/wayland"]
 x11 = ["bevy_winit/x11"]
 
 [workspace]
-members = ["crates/*", "crates/bevy_ecs/hecs"]
+members = ["crates/*", "crates/bevy_ecs/hecs", "examples/ios"]
 exclude = ["benches"]
 
 [dependencies]

README.md

@@ -4,6 +4,7 @@
 [![license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/bevyengine/bevy/blob/master/LICENSE)
 [![Crates.io](https://img.shields.io/crates/d/bevy.svg)](https://crates.io/crates/bevy)
 [![Rust](https://github.com/bevyengine/bevy/workflows/CI/badge.svg)](https://github.com/bevyengine/bevy/actions)
+![iOS cron CI](https://github.com/bevyengine/bevy/workflows/iOS%20cron%20CI/badge.svg)
 
 ## What is Bevy?
 

crates/bevy_render/Cargo.toml

@@ -51,7 +51,7 @@ spirv-reflect = "0.2.3"
 bevy-glsl-to-spirv = "0.1.7"
 
 [target.'cfg(target_os = "ios")'.dependencies]
-shaderc = "0.6.2"
+shaderc = "0.6.3"
 
 [features]
 png = ["image/png"]

examples/README.md

@@ -136,3 +136,36 @@ to point to the correct `.js` file.
 Then serve `examples/wasm` dir to browser. i.e.
 
     $ basic-http-server examples/wasm
+
+## iOS
+
+#### pre-req
+
+    $ rustup target add aarch64-apple-ios x86_64-apple-ios
+    $ cargo install cargo-lipo
+
+#### build & run
+
+Using bash:
+    $ cd examples/ios
+    $ make run
+
+In an ideal world, this will boot up, install and run the app for the first
+iOS simulator in your `xcrun simctl devices list`. If this fails, you can
+specify the simulator device UUID via:
+    $ DEVICE_ID=${YOUR_DEVICE_ID} make run
+
+If you'd like to see xcode do stuff, you can run
+    $ open bevy_ios_example.xcodeproj/
+
+which will open xcode. You then must push the zoom zoom play button and wait
+for the magic.
+
+The Xcode build GUI will by default build the rust library for both
+`x86_64-apple-ios`, and `aarch64-apple-ios` which may take a while. If you'd
+like speed this up, you update the `IOS_TARGETS` User-Defined environment
+variable in the "`cargo_ios` target" to be either `x86_64-apple-ios` or
+`aarch64-applo-ios` depending on your goal.
+
+Note: if you update this variable in Xcode, it will also change the default
+used for the `Makefile`.

examples/ios/.gitignore

@@ -0,0 +1 @@
+/build

examples/ios/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "bevy-ios-example"
+version = "0.1.0"
+authors = ["Sebastian Imlay <sebastian.imlay@gmail.com>"]
+edition = "2018"
+
+[lib]
+name = "bevy_ios_example"
+crate-type = ["staticlib"]
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+bevy = { path = "../../", features = [ "bevy_gilrs", "bevy_gltf", "bevy_wgpu", "bevy_winit", "render", "png", "hdr"], default-features = false}

examples/ios/Makefile

@@ -0,0 +1,25 @@
+.PHONY: xcodebuild run install boot-sim generate clean
+
+DEVICE = ${DEVICE_ID}
+ifndef DEVICE_ID
+	DEVICE=$(shell xcrun simctl list devices 'iOS' | grep -v 'unavailable' | grep -v '^--' | grep -v '==' | head -n 1 | cut -d ' ' -f 7 | sed 's/[()]//g')
+endif
+
+run: install
+	xcrun simctl launch --console $(DEVICE) com.rust.bevy-ios-example
+
+boot-sim:
+	xcrun simctl boot $(DEVICE) || true
+
+install: xcodebuild-simulator boot-sim
+	 xcrun simctl install $(DEVICE) build/Build/Products/Debug-iphonesimulator/bevy_ios_example.app
+
+xcodebuild-simulator:
+	IOS_TARGETS=x86_64-apple-ios xcodebuild -scheme bevy_ios_example -configuration Debug -derivedDataPath build -destination "id=$(DEVICE)"
+
+xcodebuild-iphone:
+	IOS_TARGETS=aarch64-apple-ios xcodebuild -scheme bevy_ios_example -configuration Debug -derivedDataPath build -arch arm64
+
+clean:
+	rm -r build
+	cargo clean

examples/ios/bevy_ios_example.xcodeproj/.gitignore

@@ -0,0 +1,2 @@
+xcuserdata
+project.xcworkspace

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@@ -0,0 +1,420 @@
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+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Debug;
+		};
+		FEA9B18D9236F9F6DC6DF799 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				IOS_TARGETS = "";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = "com.rust.cargo-ios";
+				SDKROOT = iphoneos;
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		9D43D41707A5C30B227B83F9 /* Build configuration list for PBXProject "bevy_ios_example" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				4AD7BC6FDD56FF18FA6DA7D7 /* Debug */,
+				79E3C28F06346EA58420A93D /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Debug;
+		};
+		AA00A0CFDB11F37F2BA3FC2E /* Build configuration list for PBXLegacyTarget "cargo_ios" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				8265913A25816D964A847F1B /* Debug */,
+				FEA9B18D9236F9F6DC6DF799 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Debug;
+		};
+		E714A1AEAAE517C348B5BD27 /* Build configuration list for PBXNativeTarget "bevy_ios_example" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				A2D5B73DD30D562B6F366526 /* Debug */,
+				5B14EC4ADC81FBF1F8CF20E9 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Debug;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 8DBF1E2B5C613DA41701F6D9 /* Project object */;
+}

examples/ios/build_rust_deps.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+set -e
+
+PATH=$PATH:$HOME/.cargo/bin
+
+# If you want your build to run faster, add a "--targets x86_64-apple-ios" for just using the ios simulator.
+if [ -n ${IOS_TARGETS} ]; then
+    cargo lipo --targets ${IOS_TARGETS}
+else
+    cargo lipo
+fi

examples/ios/ios-src/Info.plist

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIRequiresFullScreen</key>
+	<false/>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+	</array>
+</dict>
+</plist>

examples/ios/ios-src/bindings.h

@@ -0,0 +1 @@
+void main_rs(void);

examples/ios/ios-src/main.m

@@ -0,0 +1,6 @@
+#import "bindings.h"
+
+int main() {
+    main_rs();
+    return 0;
+}

examples/ios/src/lib.rs

@@ -0,0 +1,66 @@
+use bevy::{
+    prelude::{
+        shape, AddDefaultPlugins, App, Assets, Camera3dComponents, Color, Commands,
+        IntoQuerySystem, LightComponents, Mesh, Msaa, PbrComponents, ResMut, StandardMaterial,
+        Transform, Vec3, WindowDescriptor,
+    },
+    window::WindowMode,
+};
+
+#[no_mangle]
+extern "C" fn main_rs() {
+    App::build()
+        .add_resource(WindowDescriptor {
+            vsync: true,
+            resizable: false,
+            mode: WindowMode::BorderlessFullscreen,
+            ..Default::default()
+        })
+        .add_resource(Msaa { samples: 4 })
+        .add_default_plugins()
+        .add_startup_system(setup.system())
+        .run();
+}
+/// set up a simple 3D scene
+fn setup(
+    mut commands: 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(0.1, 0.2, 0.1).into()),
+            ..Default::default()
+        })
+        // cube
+        .spawn(PbrComponents {
+            mesh: meshes.add(Mesh::from(shape::Cube { size: 1.0 })),
+            material: materials.add(Color::rgb(0.5, 0.4, 0.3).into()),
+            transform: Transform::from_translation(Vec3::new(0.0, 1.0, 0.0)),
+            ..Default::default()
+        })
+        // sphere
+        .spawn(PbrComponents {
+            mesh: meshes.add(Mesh::from(shape::Icosphere {
+                subdivisions: 4,
+                radius: 0.5,
+            })),
+            material: materials.add(Color::rgb(0.1, 0.4, 0.8).into()),
+            transform: Transform::from_translation(Vec3::new(1.5, 1.5, 1.5)),
+            ..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()
+        });
+}