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use specs::{
Entities,
ReadStorage,
WriteStorage,
System,
Join,
Write
};
use crate::{
components::{
Controller,
Position,
Inventory,
AttackInbox,
AttackMessage,
AttackType,
Equipment
},
resources::{NewEntities},
components::item::ItemAction::{None, Build, Eat, Equip},
controls::Control,
};
pub struct Use;
impl <'a> System<'a> for Use {
type SystemData = (
Entities<'a>,
ReadStorage<'a, Controller>,
ReadStorage<'a, Position>,
WriteStorage<'a, Inventory>,
Write<'a, NewEntities>,
WriteStorage<'a, AttackInbox>,
WriteStorage<'a, Equipment>
);
fn run(&mut self, (entities, controllers, positions, mut inventories, mut new, mut attacked, mut equipments): Self::SystemData) {
for (ent, controller, position, inventory) in (&entities, &controllers, &positions, &mut inventories).join(){
match &controller.control {
Control::Use(rank) => {
if let Some(item) = inventory.items.get(*rank) {
match &item.action {
Build(template) => {
new.create(position.pos, template.clone()).unwrap();
inventory.items.remove(*rank);
}
Eat(health_diff) => {
AttackInbox::add_message(&mut attacked, ent, AttackMessage{typ: AttackType::Heal(*health_diff), attacker: Option::None});
inventory.items.remove(*rank);
}
Equip(equippable) => {
if let Some(equipment) = equipments.get_mut(ent) {
if equipment.equipment.contains_key(&equippable.slot) {
equipment.equipment.insert(equippable.slot, Some(equippable.clone()));
}
}
}
None => {}
}
}
}
_ => {}
}
}
}
}
|
