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use specs::{
Entities,
ReadStorage,
WriteStorage,
System,
Join,
Write
};
use crate::components::{
Controller,
Position,
Removed,
Inventory,
inventory::InventoryEntry,
Item,
Visible
};
use crate::controls::{Control};
use crate::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>,
ReadStorage<'a, Visible>
);
fn run(&mut self, (entities, controllers, positions, ground, mut removed, items, mut inventories, mut new, visibles): Self::SystemData) {
for (ent, controller, position, inventory) in (&entities, &controllers, &positions, &mut inventories).join(){
match &controller.control {
Control::Take(rank) if inventory.items.len() < inventory.capacity => {
let mut ents = ground.by_height(&position.pos, &visibles, &ent);
if let Some(idx) = rank {
if *idx >= ents.len() {
return
}
ents = vec!(ents[*idx]);
}
for ent in ents {
if let Some(item) = items.get(ent) {
inventory.items.insert(0, InventoryEntry{
itemid: item.0.clone(),
item: new.encyclopedia.get_item(&item.0).unwrap(),
is_equipped: false
});
if let Err(msg) = removed.insert(ent, Removed) {
println!("{:?}", msg);
}
break;
}
}
}
Control::Drop(rank) => {
if *rank >= inventory.items.len() {
return
}
let entry = inventory.items.remove(*rank);
let _ = new.create(position.pos, &entry.item.ent);
}
_ => {}
}
}
}
}
|
