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use specs::{
ReadStorage,
System,
Join,
Write,
WriteStorage,
Entities
};
use crate::{
components::{
Position,
Substitute,
Removed,
Serialise
},
resources::{NewEntities}
};
pub struct Replace;
impl <'a> System<'a> for Replace {
type SystemData = (
Entities<'a>,
ReadStorage<'a, Position>,
Write<'a, NewEntities>,
ReadStorage<'a, Substitute>,
WriteStorage<'a, Removed>,
ReadStorage<'a, Serialise>
);
fn run(&mut self, (entities, positions, mut new, substitutes, mut removeds, serialisations): Self::SystemData) {
for (entity, position, substitute, serialisation) in (&entities, &positions, &substitutes, (&serialisations).maybe()).join(){
// todo: better error handling
let mut template = substitute.into.clone();
if let Some(serialise) = serialisation {
// todo: extraction?
template = template.merge(serialise.template.clone());
}
let preent = new.encyclopedia.construct(&template).unwrap();
new.to_build.push((position.pos, preent));
removeds.insert(entity, Removed).unwrap();
}
}
}
|
