flecs_ecs 0.2.0

Rust API for the C/CPP flecs ECS library <https://github.com/SanderMertens/flecs>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

use crate::z_ignore_test_common::*;

use flecs_ecs::prelude::*;

fn main() {
    let world = World::new();

    let position = world
        .component_untyped_named("Position")
        .member(f32::id(), "x")
        .member(f32::id(), "y");

    // Create entity
    let e = world.entity();

    // unchecked add id due to position being uninitialized and not having a ctor.
    unsafe {
        e.add_id_unchecked(position);
    }

    // set value of position using reflection API
    let ptr = e.get_untyped_mut(position);

    let mut cur = unsafe { world.cursor_id(position, ptr) };
    cur.push();
    cur.set_float(10.0);
    cur.next();
    cur.set_float(20.0);
    cur.pop();

    // Convert component to string
    println!("{:?}", unsafe { world.to_expr_id(position, ptr) });

    // Output
    //  {x: 10, y: 20}
}

#[cfg(feature = "flecs_nightly_tests")]
#[test]
fn test() {
    let output_capture = OutputCapture::capture().unwrap();
    main();
    output_capture.test("reflection_runtime_component".to_string());
}