184 lines
7.5 KiB
Rust
184 lines
7.5 KiB
Rust
use rltk::{console, DistanceAlg, Point, RandomNumberGenerator};
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use specs::prelude::*;
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use crate::components::{
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Chasing, Equipped, Faction, MyTurn, Name, Position, SpecialAbilities, SpellTemplate, Viewshed,
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WantsToApproach, WantsToCastSpell, WantsToFlee, WantsToShoot, Weapon,
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};
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use crate::raws::{self, find_spell_entity_by_name, Reaction, RAWS};
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use crate::{spatial, 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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WriteStorage<'a, Chasing>,
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ReadStorage<'a, SpecialAbilities>,
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WriteExpect<'a, RandomNumberGenerator>,
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WriteStorage<'a, WantsToCastSpell>,
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ReadStorage<'a, Name>,
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ReadStorage<'a, SpellTemplate>,
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ReadStorage<'a, Equipped>,
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ReadStorage<'a, Weapon>,
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WriteStorage<'a, WantsToShoot>,
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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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viewsheds,
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mut chasing,
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abilities,
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mut rng,
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mut casting,
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names,
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spells,
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equipped,
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weapons,
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mut wants_shoot,
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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, &viewsheds).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, Entity)> = 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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let range = DistanceAlg::Pythagoras.distance2d(
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Point::from(*pos),
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Point::new(
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reaction.0 as i32 % map.width,
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reaction.0 as i32 / map.width,
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),
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);
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if let Some(abilities) = abilities.get(entity) {
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for ability in abilities.abilities.iter() {
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if range >= ability.min_range
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&& range <= ability.range
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&& rng.roll_dice(1, 100) >= (ability.chance * 100.0) as i32
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{
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casting
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.insert(
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entity,
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WantsToCastSpell {
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spell: find_spell_entity_by_name(
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&ability.spell,
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&names,
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&spells,
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&entities,
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)
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.unwrap(),
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target: Some(Point::new(
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reaction.0 as i32 % map.width,
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reaction.0 as i32 / map.width,
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)),
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},
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)
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.expect("Unable to insert intent to cast spell");
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done = true;
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}
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}
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}
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if !done {
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for (weapon, equip) in (&weapons, &equipped).join() {
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if let Some(wrange) = weapon.range {
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if equip.owner == entity {
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console::log(format!(
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"Owner found. Ranges: {}/{}",
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wrange, range
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));
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if wrange >= range as i32 {
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console::log("Inserting shoot");
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wants_shoot
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.insert(
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entity,
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WantsToShoot { target: reaction.2 },
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)
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.expect("Unable to insert intent to shoot");
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done = true;
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}
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}
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}
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}
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}
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if !done {
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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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chasing
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.insert(entity, Chasing { target: reaction.2 })
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.expect("Unable to insert intent to chase");
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done = true;
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}
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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, Entity)>,
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) {
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spatial::for_each_tile_content(idx, |other_entity| {
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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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raws::faction_reaction(my_faction, &faction.name, &RAWS.lock().unwrap()),
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other_entity,
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));
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}
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});
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}
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