From 6350e4ffca8ce1e46465284ef3d7559e0f40229b Mon Sep 17 00:00:00 2001
From: Kai Stevenson <kai@kaistevenson.com>
Date: Sat, 22 Aug 2026 13:54:00 -0700
Subject: fixes and refactors

---
 src/sim/cell/materials/powder.rs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'src/sim/cell/materials/powder.rs')

diff --git a/src/sim/cell/materials/powder.rs b/src/sim/cell/materials/powder.rs
index d2d1265..e08ea1f 100644
--- a/src/sim/cell/materials/powder.rs
+++ b/src/sim/cell/materials/powder.rs
@@ -1,10 +1,10 @@
-use crate::sim::cell_sim::sim::UpdateCtx;
+use crate::sim::cell_sim::sim::{PostUpdateAction, UpdateCtx};
 
 #[inline]
-pub fn sim_update(ctx: &mut UpdateCtx) {
-    ctx.candidates_swap(&[
+pub fn sim_update(ctx: &mut UpdateCtx) -> PostUpdateAction {
+    ctx.swap_or_settle(&[
         (0, 1),
         (-1 + 2 * ctx.seqno_parity as i32, 1),
         (1 - 2 * ctx.seqno_parity as i32, 1),
-    ]);
+    ])
 }
-- 
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