101 lines
3.1 KiB
Rust
101 lines
3.1 KiB
Rust
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use ::specs::prelude::*;
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use crate::components::{Faction, MyTurn, Position, Viewshed, WantsToApproach, WantsToFlee};
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use crate::raws::Reaction;
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use crate::Map;
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pub struct VisibleAI {}
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impl<'a> System<'a> for VisibleAI {
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#[allow(clippy::type_complexity)]
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type SystemData = (
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ReadStorage<'a, MyTurn>,
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ReadStorage<'a, Faction>,
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ReadStorage<'a, Position>,
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ReadExpect<'a, Map>,
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WriteStorage<'a, WantsToApproach>,
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WriteStorage<'a, WantsToFlee>,
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Entities<'a>,
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ReadExpect<'a, Entity>,
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ReadStorage<'a, Viewshed>,
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);
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fn run(&mut self, data: Self::SystemData) {
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let (
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turns,
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factions,
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positions,
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map,
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mut want_approach,
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mut want_flee,
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entities,
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player,
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viewshed,
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) = data;
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for (entity, _turn, my_faction, pos, viewshed) in
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(&entities, &turns, &factions, &positions, &viewshed).join()
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{
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if entity != *player {
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let my_idx = map.xy_idx(pos.x, pos.y);
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let mut reactions: Vec<(usize, Reaction)> = Vec::new();
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let mut flee: Vec<usize> = Vec::new();
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for visible_tile in viewshed.visible_tiles.iter() {
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let idx = map.xy_idx(visible_tile.x, visible_tile.y);
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if my_idx != idx {
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evaluate(idx, &map, &factions, &my_faction.name, &mut reactions);
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}
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}
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let mut done = false;
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for reaction in reactions.iter() {
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match reaction.1 {
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Reaction::Attack => {
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want_approach
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.insert(
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entity,
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WantsToApproach {
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idx: reaction.0 as i32,
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},
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)
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.expect("Unable to insert intent to approach");
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done = true;
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}
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Reaction::Flee => {
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flee.push(reaction.0);
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}
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_ => {}
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}
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}
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if !done && !flee.is_empty() {
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want_flee
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.insert(entity, WantsToFlee { indices: flee })
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.expect("Unable to insert intent to flee");
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}
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}
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}
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}
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}
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fn evaluate(
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idx: usize,
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map: &Map,
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factions: &ReadStorage<Faction>,
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my_faction: &str,
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reactions: &mut Vec<(usize, Reaction)>,
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) {
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for other_entity in map.tile_content[idx].iter() {
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if let Some(faction) = factions.get(*other_entity) {
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reactions.push((
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idx,
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crate::raws::faction_reaction(
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my_faction,
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&faction.name,
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&crate::raws::RAWS.lock().unwrap(),
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),
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));
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}
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}
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}
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