Turn off gravity on win and cap swirl arena spawns

src/main.js

@@ -438,6 +438,10 @@
     ui.hideGameOver();
     ui.hideWin();
     ui.setPauseState(false);
+    engine.gravity.scale =
+      typeof currentScene?.config?.gravityScale === "number"
+        ? currentScene.config.gravityScale
+        : defaultGravityScale;
     engine.gravity.x = 0;
     engine.gravity.y = config.gravity;
     engine.timing.timeScale = 1;
@@ -487,6 +491,11 @@
   const applyWinEffects = () => {
     const winCond = currentScene?.config?.winCondition;
     if (!winCond || !winCond.onWin) return;
+    if (winCond.onWin.shoveBalls || winCond.onWin.disableGravity) {
+      engine.gravity.x = 0;
+      engine.gravity.y = 0;
+      engine.gravity.scale = 0;
+    }
     if (typeof winCond.onWin.setGravity === "number") {
       engine.gravity.y = winCond.onWin.setGravity;
     }
@@ -1061,7 +1070,10 @@
 
   Events.on(engine, "beforeUpdate", () => {
     // Rope-like constraint handling: allow shortening without push-back, tension when stretched.
-    if (typeof currentScene?.config?.onBeforeUpdate === "function") {
+    if (
+      !levelWon &&
+      typeof currentScene?.config?.onBeforeUpdate === "function"
+    ) {
       currentScene.config.onBeforeUpdate({ engine, width, height });
     }
     chain.constraints.forEach((c) => {