From e38ca0d9ab14f3f44dcff260e9a84cf08a2ad0b4 Mon Sep 17 00:00:00 2001
From: chexit <chexit@duck.com>
Date: Mon, 2 Nov 2026 23:56:42 +0300
Subject: [PATCH] Match impact speed to swept segment

Co-authored-by: Codex <codex@openai.com>
---
 airdef-mod/src/sim/mod.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/airdef-mod/src/sim/mod.rs b/airdef-mod/src/sim/mod.rs
index ae8bde0..6a4b2a2 100644
--- a/airdef-mod/src/sim/mod.rs
+++ b/airdef-mod/src/sim/mod.rs
@@ -3099,7 +3099,8 @@ impl Sim {
                     let kill = self.rng.chance(spec.pk * fit * ratio);
                     // The same swept closest approach determines the physical impact, not the
                     // target's end-of-tick location. Velocities are per simulation tick.
-                    impacts.insert(m.id, (t.pos - t.vel + t.vel * k, (m.vel - t.vel).length()));
+                    let missile_step = if waiting.is_some() { end - before } else { m.pos - before };
+                    impacts.insert(m.id, (t.pos - t.vel + t.vel * k, (missile_step - t.vel).length()));
                     missed += u32::from(!kill);
                     done.push((m.id, Some(t.id), kill, m.sam));
                     continue;