Dust settles on every court: tennis ticks particles too, EPIC! cheers, the machine explains itself

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

zombies.js

@@ -897,6 +897,21 @@ function bleed(zb) {
   }
 }
 
+// Split out of updateZombies because particles are NOT a zombie feature: the ball's bounce dust
+// fires in TENNIS too, and while this loop only ran in splatter, tennis dust was born, never
+// ticked, and sat on the clay forever — the "marks where the ball hit" testers saw.
+export function updateParts(dt) {
+  for (let i = parts.length - 1; i >= 0; i--) {
+    const p = parts[i];
+    p.t -= dt;
+    if (p.smoke) { p.vy = 0.55; p.vx *= 0.97; p.vz *= 0.97; } // smoke rises and spreads; it does not fall
+    else p.vy -= 14 * dt;
+    p.x += p.vx * dt; p.y += p.vy * dt; p.z += p.vz * dt;
+    if (p.y < 0) { p.y = 0; p.vy = 0; p.vx *= 0.5; p.vz *= 0.5; }
+    if (p.t <= 0) parts.splice(i, 1);
+  }
+}
+
 export function updateZombies(dt) {
   moanT -= dt;
   if (moanT <= 0) { moan(); moanT = 2.5 + Math.random() * 4; }
@@ -1295,15 +1310,7 @@ export function updateZombies(dt) {
     if (dead) extras.splice(i, 1);
   }
 
-  for (let i = parts.length - 1; i >= 0; i--) {
-    const p = parts[i];
-    p.t -= dt;
-    if (p.smoke) { p.vy = 0.55; p.vx *= 0.97; p.vz *= 0.97; } // smoke rises and spreads; it does not fall
-    else p.vy -= 14 * dt;
-    p.x += p.vx * dt; p.y += p.vy * dt; p.z += p.vz * dt;
-    if (p.y < 0) { p.y = 0; p.vy = 0; p.vx *= 0.5; p.vz *= 0.5; }
-    if (p.t <= 0) parts.splice(i, 1);
-  }
+  updateParts(dt);
 
   const boy = G.boy; // the boy mops any gore he passes over
   for (let i = gore.length - 1; i >= 0; i--) {