magic missile, fireball scrolls
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Llywelwyn
parent
2266998e80
commit
06c3d40c65
7 changed files with 315 additions and 50 deletions
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@ -1,6 +1,6 @@
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use super::{
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gamelog::GameLog, CombatStats, Consumable, InBackpack, Name, ParticleBuilder, Position, ProvidesHealing,
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WantsToDropItem, WantsToPickupItem, WantsToUseItem, DEFAULT_PARTICLE_LIFETIME,
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gamelog::GameLog, CombatStats, Consumable, InBackpack, InflictsDamage, Map, Name, ParticleBuilder, Position,
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ProvidesHealing, SufferDamage, WantsToDropItem, WantsToPickupItem, WantsToUseItem, AOE, DEFAULT_PARTICLE_LIFETIME,
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};
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use specs::prelude::*;
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@ -39,65 +39,156 @@ impl<'a> System<'a> for ItemUseSystem {
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type SystemData = (
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ReadExpect<'a, Entity>,
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WriteExpect<'a, GameLog>,
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ReadExpect<'a, Map>,
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Entities<'a>,
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WriteStorage<'a, WantsToUseItem>,
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ReadStorage<'a, Name>,
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ReadStorage<'a, Consumable>,
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ReadStorage<'a, ProvidesHealing>,
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WriteStorage<'a, CombatStats>,
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WriteStorage<'a, SufferDamage>,
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WriteExpect<'a, ParticleBuilder>,
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ReadStorage<'a, Position>,
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ReadStorage<'a, InflictsDamage>,
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ReadStorage<'a, AOE>,
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);
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fn run(&mut self, data: Self::SystemData) {
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let (
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player_entity,
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mut gamelog,
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map,
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entities,
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mut wants_use,
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mut wants_to_use,
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names,
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consumables,
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healing,
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provides_healing,
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mut combat_stats,
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mut suffer_damage,
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mut particle_builder,
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positions,
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inflicts_damage,
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aoe,
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) = data;
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for (entity, use_item, stats) in (&entities, &wants_use, &mut combat_stats).join() {
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let item_heals = healing.get(use_item.item);
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match item_heals {
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None => {}
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Some(healer) => {
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stats.hp = i32::min(stats.max_hp, stats.hp + healer.heal_amount);
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let pos = positions.get(entity);
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if let Some(pos) = pos {
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particle_builder.request(
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pos.x,
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pos.y,
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rltk::RGB::named(rltk::GREEN),
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rltk::RGB::named(rltk::BLACK),
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rltk::to_cp437('♥'),
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DEFAULT_PARTICLE_LIFETIME,
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);
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}
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if entity == *player_entity {
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gamelog.entries.push(format!(
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"You quaff the {}, and heal {} hp.",
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names.get(use_item.item).unwrap().name,
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healer.heal_amount
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));
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}
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let consumable = consumables.get(use_item.item);
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match consumable {
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None => {}
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Some(_) => {
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entities.delete(use_item.item).expect("Delete failed");
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for (entity, wants_to_use) in (&entities, &wants_to_use).join() {
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let mut used_item = true;
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let mut aoe_item = false;
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let item_being_used = names.get(wants_to_use.item).unwrap();
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// TARGETING
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let mut targets: Vec<Entity> = Vec::new();
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match wants_to_use.target {
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None => {
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targets.push(*player_entity);
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}
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Some(target) => {
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let area_effect = aoe.get(wants_to_use.item);
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match area_effect {
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None => {
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// Single target in a tile
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let idx = map.xy_idx(target.x, target.y);
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for mob in map.tile_content[idx].iter() {
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targets.push(*mob);
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}
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}
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Some(area_effect) => {
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// AOE
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aoe_item = true;
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let mut blast_tiles = rltk::field_of_view(target, area_effect.radius, &*map);
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blast_tiles.retain(|p| p.x > 0 && p.x < map.width - 1 && p.y > 0 && p.y < map.height - 1);
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for tile_idx in blast_tiles.iter() {
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let idx = map.xy_idx(tile_idx.x, tile_idx.y);
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for mob in map.tile_content[idx].iter() {
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targets.push(*mob);
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}
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particle_builder.request(
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tile_idx.x,
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tile_idx.y,
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rltk::RGB::named(rltk::ORANGE),
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rltk::RGB::named(rltk::BLACK),
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rltk::to_cp437('░'),
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200.0,
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);
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}
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}
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}
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}
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}
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// HEALING ITEM
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let item_heals = provides_healing.get(wants_to_use.item);
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match item_heals {
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None => {}
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Some(heal) => {
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for target in targets.iter() {
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let stats = combat_stats.get_mut(*target);
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if let Some(stats) = stats {
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stats.hp = i32::min(stats.max_hp, stats.hp + heal.amount);
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if entity == *player_entity {
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gamelog.entries.push(format!(
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"You quaff the {}, and heal {} hp.",
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item_being_used.name, heal.amount
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));
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}
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let pos = positions.get(entity);
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if let Some(pos) = pos {
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particle_builder.request(
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pos.x,
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pos.y,
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rltk::RGB::named(rltk::GREEN),
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rltk::RGB::named(rltk::BLACK),
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rltk::to_cp437('♥'),
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DEFAULT_PARTICLE_LIFETIME,
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);
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}
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}
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}
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}
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}
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// DAMAGING ITEM
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let item_damages = inflicts_damage.get(wants_to_use.item);
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match item_damages {
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None => {}
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Some(damage) => {
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let target_point = wants_to_use.target.unwrap();
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gamelog.entries.push(format!("You use the {}!", item_being_used.name));
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if !aoe_item {
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particle_builder.request_star(
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target_point.x,
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target_point.y,
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rltk::RGB::named(rltk::CYAN),
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rltk::RGB::named(rltk::BLACK),
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rltk::to_cp437('*'),
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DEFAULT_PARTICLE_LIFETIME,
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);
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}
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for mob in targets.iter() {
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SufferDamage::new_damage(&mut suffer_damage, *mob, damage.amount);
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if entity == *player_entity {
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let mob_name = names.get(*mob).unwrap();
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gamelog.entries.push(format!(
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"{} takes {} damage from the {}!",
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mob_name.name, damage.amount, item_being_used.name
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));
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}
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used_item = true;
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}
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}
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}
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if used_item {
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let consumable = consumables.get(wants_to_use.item);
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match consumable {
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None => {}
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Some(_) => {
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entities.delete(wants_to_use.item).expect("Delete failed");
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}
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}
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}
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}
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wants_use.clear();
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wants_to_use.clear();
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}
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}
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