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use ecs::component::Local;
use ecs::system::{Input as SystemInput, Into, System};
use ecs::{Query, World};
struct SomeData
{
num: u64,
}
struct Name
{
name: String,
}
struct SayHelloState
{
cnt: usize,
}
impl SystemInput for SayHelloState {}
fn say_hello(mut query: Query<(SomeData, String)>, mut state: Local<SayHelloState>)
{
for (data, text) in query.iter_mut() {
println!("Hello there. Count {}: {}: {}", state.cnt, text, data.num);
state.cnt += 1;
}
}
fn say_whats_up(mut query: Query<(SomeData, Name)>, mut state: Local<SayHelloState>)
{
for (data, name) in query.iter_mut() {
println!(
"Whats up, {}. Number is {}. Count {}",
name.name, data.num, state.cnt
);
state.cnt += 1;
}
}
#[derive(Debug, PartialEq, Eq, Hash)]
enum Event
{
Update,
}
fn main()
{
let mut world = World::<Event>::new();
world.register_system(
Event::Update,
say_hello
.into_system()
.initialize((SayHelloState { cnt: 0 },)),
);
world.register_system(
Event::Update,
say_whats_up
.into_system()
.initialize((SayHelloState { cnt: 0 },)),
);
world.create_entity((
SomeData { num: 987_654 },
"Yoo".to_string(),
Name { name: "Bob".to_string() },
));
world.create_entity((SomeData { num: 345 }, "Haha".to_string()));
world.emit(&Event::Update);
println!("Haha");
world.emit(&Event::Update);
}
|
