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use std::collections::HashSet;
use specs::{
Entities,
ReadStorage,
WriteStorage,
System,
Join,
Write
};
use super::super::pos::Pos;
use super::super::components::{
Controller,
Position,
Removed,
Inventory,
Item
};
use super::super::controls::{Control};
use super::super::resources::{Ground, NewEntities};
pub struct Take;
impl <'a> System<'a> for Take {
type SystemData = (
Entities<'a>,
ReadStorage<'a, Controller>,
WriteStorage<'a, Position>,
Write<'a, Ground>,
WriteStorage<'a, Removed>,
ReadStorage<'a, Item>,
WriteStorage<'a, Inventory>,
Write<'a, NewEntities>
);
fn run(&mut self, (entities, controllers, positions, ground, mut removed, items, mut inventories, mut new): Self::SystemData) {
for (ent, controller, position, inventory) in (&entities, &controllers, &positions, &mut inventories).join(){
match &controller.0 {
Control::Take(_rank) if inventory.items.len() < inventory.capacity => {
let mut ents = ground.cells.get(&position.pos).unwrap_or(&HashSet::new()).clone();
ents.remove(&ent);
for ent in ents {
if let Some(item) = items.get(ent) {
inventory.items.push(item.clone());
if let Err(msg) = removed.insert(ent, Removed) {
println!("{:?}", msg);
}
}
}
}
Control::Drop(_rank) => {
if let Some(item) = inventory.items.pop() {
new.templates.push((position.pos, item.ent));
}
}
_ => {}
}
}
}
}
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