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use crate::z_ignore_test_common::*;
use flecs_ecs::prelude::*;
#[derive(Debug, Component)]
pub struct Position {
pub x: f32,
pub y: f32,
}
#[derive(Component)]
struct Npc;
fn main() {
let world = World::new();
// Create a query for Position, !Npc. By adding the Npc component using the
// "without" method, the component is not a part of the query type, and as a
// result does not become part of the function signatures of each and iter.
// This is useful for things like tags, which because they don't have a
// value are less useful to pass to the each/iter functions as argument.
//
// The without method is short for:
// .term<Npc>().not_()
let query = world.query::<&Position>().without(Npc).build();
// Create a few test entities for the Position query
world.entity_named("e1").set(Position { x: 10.0, y: 20.0 });
world.entity_named("e2").set(Position { x: 10.0, y: 20.0 });
// This entity will not match as it has Npc
world
.entity_named("e3")
.set(Position { x: 10.0, y: 20.0 })
.add(Npc);
// Note how the Npc tag is not part of the each signature
query.each_entity(|entity, pos| {
println!("Entity {}: {:?}", entity.name(), pos);
});
// Output:
// Entity e1: Position { x: 10.0, y: 20.0 }
// Entity e2: Position { x: 10.0, y: 20.0 }
}
#[cfg(feature = "flecs_nightly_tests")]
#[test]
fn test() {
let output_capture = OutputCapture::capture().unwrap();
main();
output_capture.test("query_without".to_string());
}