60 lines
2 KiB
Rust
60 lines
2 KiB
Rust
use super::{gamelog::GameLog, CombatStats, Entities, Map, Name, Player, Position, SufferDamage};
|
|
use specs::prelude::*;
|
|
|
|
pub struct DamageSystem {}
|
|
|
|
impl<'a> System<'a> for DamageSystem {
|
|
type SystemData = (
|
|
WriteStorage<'a, CombatStats>,
|
|
WriteStorage<'a, SufferDamage>,
|
|
WriteExpect<'a, Map>,
|
|
ReadStorage<'a, Position>,
|
|
Entities<'a>,
|
|
);
|
|
|
|
fn run(&mut self, data: Self::SystemData) {
|
|
let (mut stats, mut damage, mut map, positions, entities) = data;
|
|
|
|
for (entity, mut stats, damage) in (&entities, &mut stats, &damage).join() {
|
|
stats.hp -= damage.amount.iter().sum::<i32>();
|
|
let pos = positions.get(entity);
|
|
if let Some(pos) = pos {
|
|
let idx = map.xy_idx(pos.x, pos.y);
|
|
map.bloodstains.insert(idx);
|
|
}
|
|
}
|
|
|
|
damage.clear();
|
|
}
|
|
}
|
|
|
|
pub fn delete_the_dead(ecs: &mut World) {
|
|
let mut dead: Vec<Entity> = Vec::new();
|
|
// Using scope to make borrow checker happy
|
|
{
|
|
let combat_stats = ecs.read_storage::<CombatStats>();
|
|
let players = ecs.read_storage::<Player>();
|
|
let names = ecs.read_storage::<Name>();
|
|
let entities = ecs.entities();
|
|
let mut log = ecs.write_resource::<GameLog>();
|
|
for (entity, stats) in (&entities, &combat_stats).join() {
|
|
if stats.hp < 1 {
|
|
let player = players.get(entity);
|
|
match player {
|
|
None => {
|
|
let victim_name = names.get(entity);
|
|
if let Some(victim_name) = victim_name {
|
|
log.entries.push(format!("{} died!", &victim_name.name));
|
|
}
|
|
dead.push(entity)
|
|
}
|
|
Some(_) => log.entries.push(format!("YOU DIED!")),
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
for victim in dead {
|
|
ecs.delete_entity(victim).expect("Unable to delete.");
|
|
}
|
|
}
|