1 files changed, 141 insertions, 0 deletions
diff --git a/ecs/benches/query.rs b/ecs/benches/query.rs
new file mode 100644
index 0000000..0f18f5c
--- /dev/null
+++ b/ecs/benches/query.rs
@@ -0,0 +1,141 @@
+use std::hint::black_box;
+use std::path::PathBuf;
+
+use criterion::{criterion_group, criterion_main, Criterion};
+use ecs::{Component, World};
+
+#[derive(Component)]
+struct Foo
+{
+    _text: String,
+}
+
+#[derive(Component)]
+struct Bar
+{
+    _path: PathBuf,
+    _num: u64,
+}
+
+#[derive(Component)]
+struct Position
+{
+    _x: f32,
+    _y: f32,
+    _z: f32,
+}
+
+#[derive(Component)]
+struct PosA
+{
+    _x: f32,
+    _y: f32,
+    _z: f32,
+}
+
+#[derive(Component)]
+struct PosB
+{
+    _x: f32,
+    _y: f32,
+    _z: f32,
+}
+
+#[derive(Component)]
+struct PosC
+{
+    _x: f32,
+    _y: f32,
+    _z: f32,
+}
+
+#[derive(Component)]
+struct MoreText
+{
+    _more_text: String,
+}
+
+#[derive(Component)]
+struct EvenMoreText
+{
+    _even_more_text: String,
+}
+
+fn spawn_1000_entities(world: &mut World)
+{
+    for _ in 0..300 {
+        world.create_entity((
+            Bar {
+                _path: "/dev/zero".into(),
+                _num: 65789,
+            },
+            Position { _x: 13.98, _y: 27.0, _z: 0.2 },
+            Foo { _text: "Hello there".to_string() },
+            PosA {
+                _x: 1183.98,
+                _y: 272628.0,
+                _z: 3306.2,
+            },
+            PosB {
+                _x: 171183.98,
+                _y: 28.0,
+                _z: 336.2901,
+            },
+            PosC { _x: 8273.98, _y: 28.0, _z: 336.2901 },
+            MoreText {
+                _more_text: "Lorem ipsum".to_string(),
+            },
+            EvenMoreText {
+                _even_more_text: "Wow so much text".to_string(),
+            },
+        ));
+    }
+
+    for _ in 0..700 {
+        world.create_entity((
+            Bar {
+                _path: "/dev/null".into(),
+                _num: 65789,
+            },
+            Position { _x: 88.11, _y: 9.0, _z: 36.11 },
+            Foo { _text: "Hey".to_string() },
+            PosA {
+                _x: 118310.98,
+                _y: 272628.0,
+                _z: 3306.2,
+            },
+            PosB { _x: 11323.98, _y: 28.0, _z: 336.2901 },
+            PosC {
+                _x: 8273.98,
+                _y: 21818.0,
+                _z: 336.2901,
+            },
+            MoreText {
+                _more_text: "Lorem ipsum".to_string(),
+            },
+            EvenMoreText {
+                _even_more_text: "Wow much text".to_string(),
+            },
+        ));
+    }
+}
+
+fn benchbark(criterion: &mut Criterion)
+{
+    criterion.bench_function("Iterate 1000 entities", |bencher| {
+        let mut world = World::new();
+
+        spawn_1000_entities(&mut world);
+
+        let query = world.query::<(Bar, Position, Foo), ()>();
+
+        bencher.iter(|| {
+            for comps in query.iter() {
+                black_box(comps);
+            }
+        })
+    });
+}
+
+criterion_group!(benches, benchbark);
+criterion_main!(benches);