69 lines
2.0 KiB
Rust
69 lines
2.0 KiB
Rust
use ::specs::prelude::*;
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use crate::components::{Name, Player, Pools, SufferDamage};
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use crate::game_log::GameLog;
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use crate::{Map, Position, RunState};
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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, Pools>,
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WriteStorage<'a, SufferDamage>,
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ReadStorage<'a, Position>,
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WriteExpect<'a, Map>,
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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, positions, mut map, entities) = data;
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for (entity, mut stats, damage) in (&entities, &mut stats, &damage).join() {
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stats.hit_points.current -= damage.amount.iter().sum::<i32>();
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if let Some(pos) = positions.get(entity) {
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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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// Scope for the sake of the borrow checker
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{
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let combat_stats = ecs.read_storage::<Pools>();
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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 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.hit_points.current < 1 {
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match players.get(entity) {
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None => {
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if let Some(victim_name) = names.get(entity) {
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log.append(format!("{} is dead", &victim_name.name));
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}
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dead.push(entity)
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}
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Some(_) => {
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let mut runstate = ecs.write_resource::<RunState>();
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*runstate = RunState::GameOver;
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}
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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)
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.expect("Unable to delete the dead");
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}
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}
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