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