roguelike-game/src/inventory_system.rs

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Rust
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2021-11-03 15:11:19 -04:00
use crate::{gamelog::GameLog, InBackpack, Name, Position, WantsToPickupItem};
use specs::prelude::*;
pub struct ItemCollectionSystem {}
impl<'a> System<'a> for ItemCollectionSystem {
#[allow(clippy::type_complexity)]
type SystemData = (
ReadExpect<'a, Entity>,
WriteExpect<'a, GameLog>,
WriteStorage<'a, WantsToPickupItem>,
WriteStorage<'a, Position>,
ReadStorage<'a, Name>,
WriteStorage<'a, InBackpack>,
);
fn run(&mut self, data: Self::SystemData) {
let (player_entity, mut gamelog, mut wants_pickup, mut positions, names, mut backpack) =
data;
for pickup in wants_pickup.join() {
positions.remove(pickup.item);
backpack
.insert(
pickup.item,
InBackpack {
owner: pickup.collected_by,
},
)
.expect("Failed to add item to backpack");
if pickup.collected_by == *player_entity {
gamelog.entries.push(format!(
"You pick up the {}.",
names.get(pickup.item).unwrap().name
));
}
}
wants_pickup.clear();
}
}