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use specs::{
Read,
Write,
WriteStorage,
System,
Join,
Entities,
LazyUpdate,
Builder
};
use crate::components::{New, Position};
use crate::resources::{NewEntities};
pub struct Create;
impl <'a> System<'a> for Create {
type SystemData = (
Entities<'a>,
Write<'a, NewEntities>,
Read<'a, LazyUpdate>,
WriteStorage<'a, New>
);
fn run(&mut self, (entities, mut new_entities, updater, mut new): Self::SystemData) {
{
let mut ents = Vec::new();
for (ent, _new) in (&entities, &new).join() {
ents.push(ent);
}
for ent in ents {
new.remove(ent);
}
}
for (pos, preentity) in &new_entities.to_build {
let mut builder = updater.create_entity(&entities);
for comp in preentity {
builder = comp.build(builder);
}
builder.with(Position::new(*pos)).with(New).build();
}
new_entities.to_build.clear();
}
}
|
