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|
use rand::Rng;
use specs::{
ReadStorage,
WriteStorage,
Write,
System,
Entities,
Join
};
use crate::{
components::{Health, AttackInbox, AttackType, Dead, Position, Autofight},
resources::NewEntities,
Template,
util
};
pub struct Attacking;
impl <'a> System<'a> for Attacking {
type SystemData = (
Entities<'a>,
WriteStorage<'a, AttackInbox>,
WriteStorage<'a, Health>,
WriteStorage<'a, Dead>,
ReadStorage<'a, Position>,
Write<'a, NewEntities>,
WriteStorage<'a, Autofight>
);
fn run(&mut self, (entities, mut attackeds, mut healths, mut deads, positions, mut new, mut autofighters): Self::SystemData) {
for (entity, attacked, autofighter) in (&entities, &attackeds, &mut autofighters).join() {
for attack in &attacked.messages {
if attack.typ.is_hostile() {
if let Some(attacker) = attack.attacker {
if healths.contains(attacker) && attacker != entity {
autofighter.target = Some(attacker);
}
}
}
}
}
for (ent, health, attacked) in (&entities, &mut healths, &mut attackeds).join() {
let mut wounded = false;
for attack in attacked.messages.drain(..) {
match attack.typ {
AttackType::Attack(strength) => {
let damage = rand::thread_rng().gen_range(0, strength+1);
health.health -= damage;
if damage > 0 {
wounded = true;
}
}
AttackType::Heal(healthdiff) => {
health.health += healthdiff;
}
}
}
health.health = util::clamp(health.health, 0, health.maxhealth);
if health.health == 0 {
deads.insert(ent, Dead).unwrap();
}
if let Some(position) = positions.get(ent){
if wounded {
new.create(position.pos, Template::empty("wound")).unwrap();
}
}
}
attackeds.clear();
}
}
|
