From 8fb11fe800d592fe8171b50b9b63c235dcf8a62d Mon Sep 17 00:00:00 2001
From: Robert Garrett <robertgarrett404@gmail.com>
Date: Wed, 10 Jul 2024 14:38:41 -0500
Subject: [PATCH] Make `cohesion()` affect the acceleration

---
 src/birdoids_plugin.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/birdoids_plugin.rs b/src/birdoids_plugin.rs
index d741c654..05edf4e1 100644
--- a/src/birdoids_plugin.rs
+++ b/src/birdoids_plugin.rs
@@ -168,14 +168,14 @@ fn check_keyboard(
 
 fn cohesion(
     spatial_tree: Res<KDTree2<TrackedByKdTree>>,
-    mut boids: Query<(&Transform, &mut Velocity), With<Boid>>,
+    mut boids: Query<(&Transform, &mut Acceleration), With<Boid>>,
 ) {
     // for each boid
     // find neighbors
     // find center-of-mass of neighbors
     // find vector from boid to flock CoM
     // apply force
-    for (transform, mut velocity) in &mut boids {
+    for (transform, mut acceleration) in &mut boids {
         let neighbors = spatial_tree.within_distance(
             transform.translation.xy(),
             BOID_VIEW_RANGE
@@ -188,7 +188,7 @@ fn cohesion(
                 }) / (neighbors.len()) as f32;
             
             let towards = (center_of_mass - transform.translation).normalize();
-            velocity.0 += towards * COHESION_FACTOR;
+            acceleration.0 += towards * COHESION_FACTOR;
         }
     }
 }