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+ "redox_syscall",
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+]
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+ "asparit",
+ "async-ecs",
+ "async-ecs-derive",
+ "env_logger",
+ "futures",
+ "log",
+ "num_cpus",
+ "rand",
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+ "tokio",
+]
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+ "unicode-xid",
+]
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+ "lazy_static",
+ "libc",
+ "memchr",
+ "mio",
+ "num_cpus",
+ "parking_lot",
+ "pin-project-lite",
+ "signal-hook-registry",
+ "slab",
+ "tokio-macros",
+ "winapi",
+]
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Cargo.toml

@@ -0,0 +1,15 @@
+[workspace]
+members = [
+    "asparit",
+    "async-ecs",
+    "async-ecs-derive",
+    "space-crush",
+]
+default-members = [
+    "space-crush",
+]
+
+[patch.crates-io]
+asparit = { path = "./asparit" }
+async-ecs = { path = "./async-ecs" }
+async-ecs-derive = { path = "./async-ecs-derive" }

asparit

@@ -0,0 +1 @@
+Subproject commit 27fd692518d3d77a2dc7c82d0ba5b222305d305d

async-ecs

@@ -0,0 +1 @@
+Subproject commit 0c94dac6c2a9307aba8296fb2450314250f2e8d4

async-ecs-derive

@@ -0,0 +1 @@
+Subproject commit 19038f49ebecd0d132002e4c42fe1e29440cf5a2

space-crush/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "space-crush"
+version = "0.1.0"
+authors = ["Bergmann89 <info@bergmann89.de>"]
+edition = "2018"
+
+[dependencies]
+asparit = { version = "0.1", default-features = false, features = [ "tokio-executor" ] }
+async-ecs = "0.1"
+async-ecs-derive = "0.1"
+env_logger = "0.8"
+futures = "0.3"
+log = "0.4"
+num_cpus = "1.13"
+rand = "0.7"
+thiserror = "1.0"
+tokio = "0.3"

space-crush/src/main.rs

@@ -0,0 +1,218 @@
+use std::io::Error as IoError;
+use std::time::{Duration, Instant};
+
+use async_ecs::{
+    asparit::{Driver, ParallelIterator},
+    dispatcher::Error as DispatcherError,
+    AsyncSystem, Dispatcher, Join, ParJoin, ReadStorage, System, VecStorage, World, WriteStorage,
+};
+use async_ecs_derive::Component;
+use futures::future::{BoxFuture, FutureExt};
+use log::info;
+use rand::random;
+use thiserror::Error;
+use tokio::{runtime::Builder, task::LocalSet};
+
+fn main() -> Result<(), Error> {
+    env_logger::builder()
+        .filter_level(log::LevelFilter::Info)
+        .format_timestamp_nanos()
+        .init();
+
+    let rt = Builder::new_multi_thread()
+        .worker_threads(num_cpus::get() + 4)
+        .enable_all()
+        .build()?;
+
+    rt.block_on(async move { LocalSet::new().run_until(run()).await })
+}
+
+async fn run() -> Result<(), Error> {
+    info!("Application started!");
+    info!("  num_cpus = {}", num_cpus::get());
+
+    let mut world = World::default();
+    world.register_component::<Position>();
+    world.register_component::<Velocity>();
+    world.register_component::<Acceleration>();
+
+    for _ in 0..ENTITY_COUNT {
+        world
+            .create_entity()
+            .with(Velocity::random())
+            .with(Position::random())
+            .with(Acceleration::random())
+            .build();
+    }
+
+    info!("World initialized!");
+
+    let mut dispatcher = Dispatcher::builder()
+        .with(ParMove, "move", &[])?
+        .with(ParAccelerate, "accelerate", &["move"])?
+        .build();
+
+    info!("Setup done!");
+
+    let mut delta = Duration::from_secs(0);
+    for _ in 0..REPEAT_COUNT {
+        info!("Start iteration");
+
+        let start = Instant::now();
+
+        dispatcher.dispatch(&world).await?;
+
+        let end = Instant::now();
+
+        info!("End iteration");
+
+        delta += end - start;
+    }
+
+    let delta = delta / REPEAT_COUNT;
+
+    info!("Average time per dispatch: {:?}", delta);
+
+    Ok(())
+}
+
+const ENTITY_COUNT: usize = 1_000_000;
+const REPEAT_COUNT: u32 = 100;
+
+#[derive(Debug, Component)]
+#[storage(VecStorage)]
+struct Position {
+    x: f64,
+    y: f64,
+}
+
+#[derive(Debug, Component)]
+#[storage(VecStorage)]
+struct Velocity {
+    x: f64,
+    y: f64,
+}
+
+#[derive(Debug, Component)]
+#[storage(VecStorage)]
+struct Acceleration {
+    x: f64,
+    y: f64,
+}
+
+struct SeqMove;
+struct SeqAccelerate;
+
+struct ParMove;
+struct ParAccelerate;
+
+#[derive(Debug, Error)]
+enum Error {
+    #[error("IO Error: {0}")]
+    IoError(IoError),
+
+    #[error("Dispatcher Error: {0}")]
+    DispatcherError(DispatcherError),
+}
+
+impl Position {
+    fn random() -> Self {
+        Self {
+            x: random::<f64>() - 0.5,
+            y: random::<f64>() - 0.5,
+        }
+    }
+}
+
+impl Velocity {
+    fn random() -> Self {
+        Self {
+            x: random::<f64>() - 0.5,
+            y: random::<f64>() - 0.5,
+        }
+    }
+}
+
+impl Acceleration {
+    fn random() -> Self {
+        Self {
+            x: random::<f64>() - 0.5,
+            y: random::<f64>() - 0.5,
+        }
+    }
+}
+
+impl<'a> System<'a> for SeqMove {
+    type SystemData = (WriteStorage<'a, Position>, ReadStorage<'a, Velocity>);
+
+    fn run(&mut self, (mut position, velocity): Self::SystemData) {
+        for (position, velocity) in (&mut position, &velocity).join() {
+            position.x += velocity.x;
+            position.y += velocity.y;
+        }
+    }
+}
+
+impl<'a> AsyncSystem<'a> for SeqAccelerate {
+    type SystemData = (WriteStorage<'a, Velocity>, ReadStorage<'a, Acceleration>);
+    type Future = futures::future::Ready<()>;
+
+    fn run(&mut self, (mut velocity, acceleration): Self::SystemData) -> Self::Future {
+        for (velocity, acceleration) in (&mut velocity, &acceleration).join() {
+            velocity.x += acceleration.x;
+            velocity.y += acceleration.y;
+        }
+
+        futures::future::ready(())
+    }
+}
+
+impl<'a> AsyncSystem<'a> for ParMove {
+    type SystemData = (WriteStorage<'a, Position>, ReadStorage<'a, Velocity>);
+    type Future = BoxFuture<'a, ()>;
+
+    fn run(&mut self, (mut position, velocity): Self::SystemData) -> Self::Future {
+        async move {
+            (&mut position, &velocity)
+                .par_join()
+                .for_each(|(position, velocity)| {
+                    position.x += velocity.x;
+                    position.y += velocity.y;
+                })
+                .exec()
+                .await;
+        }
+        .boxed()
+    }
+}
+
+impl<'a> AsyncSystem<'a> for ParAccelerate {
+    type SystemData = (WriteStorage<'a, Velocity>, ReadStorage<'a, Acceleration>);
+    type Future = BoxFuture<'a, ()>;
+
+    fn run(&mut self, (mut velocity, acceleration): Self::SystemData) -> Self::Future {
+        async move {
+            (&mut velocity, &acceleration)
+                .par_join()
+                .for_each(|(velocity, acceleration)| {
+                    velocity.x += acceleration.x;
+                    velocity.y += acceleration.y;
+                })
+                .exec()
+                .await;
+        }
+        .boxed()
+    }
+}
+
+impl From<IoError> for Error {
+    fn from(err: IoError) -> Self {
+        Self::IoError(err)
+    }
+}
+
+impl From<DispatcherError> for Error {
+    fn from(err: DispatcherError) -> Self {
+        Self::DispatcherError(err)
+    }
+}