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
|
use specs::{
ReadStorage,
WriteStorage,
System,
Join,
Write
};
use crate::components::{
Controller,
Position,
Inventory,
Health
};
use crate::resources::{NewEntities};
use crate::components::item::ItemAction::{None, Build, Eat};
use crate::controls::Control;
pub struct Use;
impl <'a> System<'a> for Use {
type SystemData = (
ReadStorage<'a, Controller>,
WriteStorage<'a, Position>,
WriteStorage<'a, Inventory>,
Write<'a, NewEntities>,
WriteStorage<'a, Health>
);
fn run(&mut self, (controllers, positions, mut inventories, mut new, mut healths): Self::SystemData) {
for (controller, position, inventory, maybe_health) in (&controllers, &positions, &mut inventories, (&mut healths).maybe()).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) => {
if let Some(health) = maybe_health {
health.heal(*health_diff);
}
inventory.items.remove(*rank);
}
None => {}
}
}
}
_ => {}
}
}
}
}
|
