XECS

An Entity-Component-System library

Example

```rust,no_run // Define two components struct // Component is Send + Sync + 'static

[derive(Debug,Copy)]

struct Position{ x : f32, y : f32 }; struct Hidden;

// create an empty world let mut world = World::new();

// generate 10 entities for _ in 0..10 { let x = random(); let y = random(); // andomly generate the positions world.create_entity() .attach(Position { x,y }); }

// print all postions for pos in world.query::<&Position>() { print!("{:?}",pos) }

// filter some entities need to be hidden let ids = world.query::<&Position>() .withid() .filter(|(,)|random()) .map(|(id,)|id) .collect::>();

// attach hidden to id for id in ids { world.attach_component(id,Hidden); }

// make a full-owning group to accelerate the query world.makegroup(fullowning::());

// only print postions with id that is not hidden for (id,data) in world.query::<&Position,Without<&Hidden>>() { print!("{}:{:?}",id,data); } ```