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|
use specs::{
Entities,
ReadStorage,
WriteStorage,
System,
Join,
Write
};
use crate::{
components::{
Controller,
Position,
Inventory,
Attacked
},
resources::{NewEntities},
components::item::ItemAction::{None, Build, Eat},
controls::Control,
attack::Attack
};
pub struct Use;
impl <'a> System<'a> for Use {
type SystemData = (
Entities<'a>,
ReadStorage<'a, Controller>,
WriteStorage<'a, Position>,
WriteStorage<'a, Inventory>,
Write<'a, NewEntities>,
WriteStorage<'a, Attacked>
);
fn run(&mut self, (entities, controllers, positions, mut inventories, mut new, mut attacked): Self::SystemData) {
for (ent, controller, position, inventory) in (&entities, &controllers, &positions, &mut inventories).join(){
match &controller.0 {
Control::Use(rank) => {
if let Some(item) = inventory.items.get(*rank) {
match &item.action {
Build(template) => {
let _ = new.create(position.pos, template.clone());
inventory.items.remove(*rank);
}
Eat(health_diff) => {
attacked
.entry(ent)
.unwrap()
.or_insert_with(Attacked::default)
.attacks
.push(Attack::new(-*health_diff));
inventory.items.remove(*rank);
}
None => {}
}
}
}
_ => {}
}
}
}
}
|
