From 2d21d709901c96b05d7f0169dd9d1207436c658c Mon Sep 17 00:00:00 2001
From: Alexander Foremny <aforemny@posteo.de>
Date: Tue, 19 Mar 2024 14:13:16 +0100
Subject: feat: area of effect

---
 src/server.rs | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 53 insertions(+), 1 deletion(-)

(limited to 'src/server.rs')

diff --git a/src/server.rs b/src/server.rs
index fc44120..4593cfa 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -3,6 +3,7 @@ use crate::server::entity_map::*;
 use crate::server::network::*;
 use crate::shared::ability::*;
 use crate::shared::activation::*;
+use crate::shared::area_of_effect::*;
 use crate::shared::buffs::*;
 use crate::shared::champion::*;
 use crate::shared::cooldown::*;
@@ -71,8 +72,17 @@ impl Plugin for ServerPlugin {
             .add_systems(
                 FixedUpdate,
                 (
-                    projectile_move.after(imperative_walk_to),
                     projectile_despawn,
+                    projectile_move.after(imperative_walk_to),
+                )
+                    .chain(),
+            )
+            .add_systems(
+                FixedUpdate,
+                (
+                    area_of_effect_despawn,
+                    area_of_effect_tick.after(imperative_walk_to),
+                    area_of_effect_activate,
                 )
                     .chain(),
             )
@@ -580,3 +590,45 @@ fn buffs_despawn(mut buffses: Query<&mut Buffs>) {
         }
     }
 }
+
+fn area_of_effect_tick(mut area_of_effects: Query<&mut AreaOfEffect>, time: Res<Time>) {
+    let dt = time.delta();
+    for mut area_of_effect in area_of_effects.iter_mut() {
+        if let Some(ref mut duration) = area_of_effect.duration {
+            *duration = (*duration - dt.as_secs_f32()).max(0.);
+        } else {
+            area_of_effect.duration = Some(0.);
+        }
+    }
+}
+
+fn area_of_effect_despawn(area_of_effects: Query<(Entity, &AreaOfEffect)>, mut commands: Commands) {
+    for (entity, area_of_effect) in area_of_effects.iter() {
+        let Some(duration) = area_of_effect.duration else {
+            continue;
+        };
+        if duration > 0. {
+            continue;
+        };
+        commands.entity(entity).despawn();
+    }
+}
+
+fn area_of_effect_activate(
+    players: Query<(&PlayerId, &PlayerPosition)>,
+    area_of_effects: Query<&AreaOfEffect>,
+    mut commands: Commands,
+) {
+    for area_of_effect in area_of_effects.iter() {
+        for (player_id, player_position) in players.iter() {
+            if *player_id == area_of_effect.source_player {
+                continue;
+            }
+            if area_of_effect.position.distance(player_position.0)
+                < area_of_effect.radius + PLAYER_RADIUS
+            {
+                area_of_effect.activate()(&mut commands, area_of_effect.source_player, *player_id);
+            }
+        }
+    }
+}
-- 
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