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use specs::{
ReadStorage,
System,
Join,
Write
};
use crate::{
ComponentWrapper,
components::{
Position,
Build,
Trigger,
TriggerBox,
TimeOffset
},
resources::{NewEntities},
};
pub struct Building;
impl <'a> System<'a> for Building{
type SystemData = (
ReadStorage<'a, Position>,
Write<'a, NewEntities>,
ReadStorage<'a, TriggerBox>,
ReadStorage<'a, Build>,
ReadStorage<'a, TimeOffset>
);
fn run(&mut self, (positions, mut new, triggerboxes, builds, time_offsets): Self::SystemData) {
for (position, triggerbox, build, time_offset) in (&positions, &triggerboxes, &builds, (&time_offsets).maybe()).join(){
if triggerbox.has_message(&[Trigger::Build, Trigger::Change]) {
// todo: better error handling
let mut preent = new.encyclopedia.construct(&build.obj).unwrap();
if let Some(time) = time_offset {
preent.push(ComponentWrapper::TimeOffset(time.clone()));
}
new.to_build.push((position.pos, preent));
}
}
}
}
|
