1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
use specs::{
Entities,
ReadStorage,
WriteStorage,
System,
Join,
Write,
Entity
};
use crate::components::{
Controller,
Position,
Removed,
Inventory,
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: Vec<Entity> = ground.by_height(&position.pos, &visibles).into_iter().filter(|e| *e != ent).collect();
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.add_item(item.0.clone(), &new.encyclopedia);
if let Err(err) = removed.insert(ent, Removed) {
println!("error removing entity: {}", err);
}
break;
}
}
}
Control::Drop(rank) => {
if *rank >= inventory.items.len() {
return
}
let entry = inventory.items.remove(*rank);
let _ = new.create(position.pos, &entry.item.ent);
}
_ => {}
}
}
}
}
|
