rename some Java variables with excessively long names

Author: stephengold

src/main/java/com/jme3/bullet/MultiBodyLink.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020-2022 jMonkeyEngine
+ * Copyright (c) 2020-2025 jMonkeyEngine
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -385,8 +385,8 @@ public Vector3f inertia(Vector3f storeResult) {
     public boolean isCollisionWithParent() {
         long linkId = nativeId();
         int flags = getFlags(linkId);
-        int disableCollisionWithParentFlag = 0x1;
-        if ((flags & disableCollisionWithParentFlag) != 0x0) {
+        int disableParentCollision = 0x1;
+        if ((flags & disableParentCollision) != 0x0) {
             return false;
         } else {
             return true;

src/main/java/com/jme3/bullet/PhysicsSpace.java

@@ -1272,7 +1272,6 @@ native private long createPhysicsSpace(
             setSpeculativeContactRestitution(long spaceId, boolean apply);
 
     native private static void stepSimulation(long spaceId, float timeInterval,
-            int maxSubSteps, float accuracy, boolean enableContactEndedCallback,
-            boolean enableContactProcessedCallback,
-            boolean enableContactStartedCallback);
+            int maxSubSteps, float accuracy, boolean enableContactEnded,
+            boolean enableContactProcessed, boolean enableContactStarted);
 }

src/main/java/com/jme3/bullet/objects/infos/RigidBodySnapshot.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022-2024 jMonkeyEngine
+ * Copyright (c) 2022-2025 jMonkeyEngine
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -173,7 +173,7 @@ public class RigidBodySnapshot {
     /**
      * anisotropic friction components
      */
-    final private Vector3f anisotropicFrictionComponents;
+    final private Vector3f anisoFrictionComponents;
     /**
      * linear factors
      */
@@ -249,7 +249,7 @@ public RigidBodySnapshot(PhysicsRigidBody body) {
         this.location = body.getPhysicsLocationDp(null);
 
         // Vector3f
-        this.anisotropicFrictionComponents = body.getAnisotropicFriction(null);
+        this.anisoFrictionComponents = body.getAnisotropicFriction(null);
         this.angularFactor = body.getAngularFactor(null);
         this.linearFactor = body.getLinearFactor(null);
         this.totalAppliedForce = body.totalAppliedForce(null);
@@ -289,7 +289,7 @@ public void applyAllExceptIgnoreListTo(PhysicsRigidBody body) {
         body.setSpinningFriction(spinningFriction);
 
         body.setAnisotropicFriction(
-                anisotropicFrictionComponents, anisotropicFrictionModes);
+                anisoFrictionComponents, anisotropicFrictionModes);
         body.setUserIndex(userIndex);
         body.setUserIndex2(userIndex2);
         body.setUserIndex3(userIndex3);