bugfix: premature GC after PhysicsScene.getBodies()

src/main/java/com/github/stephengold/joltjni/BodyCreationSettings.java

@@ -69,6 +69,17 @@ public BodyCreationSettings(ConstShape shape, RVec3Arg loc, QuatArg orient,
         setVirtualAddress(bodySettingsVa, () -> free(bodySettingsVa));
     }
 
+    /**
+     * Instantiate with the specified container and native object.
+     *
+     * @param container the containing object, or {@code null} if none
+     * @param bodySettingsVa the virtual address of the native object to assign
+     * (not zero)
+     */
+    BodyCreationSettings(JoltPhysicsObject container, long bodySettingsVa) {
+        super(container, bodySettingsVa);
+    }
+
     /**
      * Instantiate settings with the specified native object assigned.
      *

src/main/java/com/github/stephengold/joltjni/PhysicsScene.java

@@ -88,7 +88,7 @@ public BodyCreationSettings[] getBodies() {
         BodyCreationSettings[] result = new BodyCreationSettings[numBodies];
         for (int bodyIndex = 0; bodyIndex < numBodies; ++bodyIndex) {
             long settingsVa = getBody(sceneVa, bodyIndex);
-            result[bodyIndex] = new BodyCreationSettings(settingsVa, false);
+            result[bodyIndex] = new BodyCreationSettings(this, settingsVa);
         }
 
         return result;

src/main/java/com/github/stephengold/joltjni/PhysicsSceneRef.java

@@ -82,7 +82,7 @@ public BodyCreationSettings[] getBodies() {
         BodyCreationSettings[] result = new BodyCreationSettings[numBodies];
         for (int bodyIndex = 0; bodyIndex < numBodies; ++bodyIndex) {
             long settingsVa = PhysicsScene.getBody(sceneVa, bodyIndex);
-            result[bodyIndex] = new BodyCreationSettings(settingsVa, false);
+            result[bodyIndex] = new BodyCreationSettings(this, settingsVa);
         }
 
         return result;