VehicleConstraintSettings: add 2 public methods

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

@@ -86,6 +86,21 @@ public void addWheels(WheelSettings... wheelSettingsArray) {
         }
     }
 
+    /**
+     * Access the settings for the specified anti-roll bar. (native field:
+     * mAntiRollBars)
+     *
+     * @param index the index of the anti-roll bar to access (≥0)
+     * @return a new JVM object with the pre-existing native object assigned
+     */
+    public VehicleAntiRollBar getAntiRollBar(int index) {
+        long settingsVa = va();
+        long barVa = getAntiRollBar(settingsVa, index);
+        VehicleAntiRollBar result = new VehicleAntiRollBar(this, barVa);
+
+        return result;
+    }
+
     /**
      * Access the controller settings.
      *
@@ -212,6 +227,16 @@ public void setMaxPitchRollAngle(float angle) {
         setMaxPitchRollAngle(constraintSettingsVa, angle);
     }
 
+    /**
+     * Alter the number of anti-roll bars. (native attribute: mAntiRollBars)
+     *
+     * @param count the desired number (≥0)
+     */
+    public void setNumAntiRollBars(int count) {
+        long settingsVa = va();
+        setNumAntiRollBars(settingsVa, count);
+    }
+
     /**
      * Alter the up direction. (native attribute: mUp)
      *
@@ -233,6 +258,8 @@ native private static void addWheel(
 
     native private static long createDefault();
 
+    native private static long getAntiRollBar(long settingsVa, int index);
+
     native private static float getForwardX(long settingsVa);
 
     native private static float getForwardY(long settingsVa);
@@ -256,6 +283,8 @@ native private static void setForward(
     native private static void setMaxPitchRollAngle(
             long constraintSettingsVa, float angle);
 
+    native private static void setNumAntiRollBars(long settingsVa, int count);
+
     native private static void setUp(
             long settingsVa, float dx, float dy, float dz);
 }

src/main/native/glue/v/VehicleConstraintSettings.cpp

@@ -1,5 +1,5 @@
 /*
-Copyright (c) 2024 Stephen Gold
+Copyright (c) 2024-2025 Stephen Gold
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -57,6 +57,20 @@ JNIEXPORT jlong JNICALL Java_com_github_stephengold_joltjni_VehicleConstraintSet
     return reinterpret_cast<jlong> (pResult);
 }
 
+/*
+ * Class:     com_github_stephengold_joltjni_VehicleConstraintSettings
+ * Method:    getAntiRollBar
+ * Signature: (JI)J
+ */
+JNIEXPORT jlong JNICALL Java_com_github_stephengold_joltjni_VehicleConstraintSettings_getAntiRollBar
+  (JNIEnv *, jclass, jlong settingsVa, jint index) {
+    VehicleConstraintSettings * const pSettings
+            = reinterpret_cast<VehicleConstraintSettings *> (settingsVa);
+    VehicleAntiRollBar * const pResult
+            = &pSettings->mAntiRollBars[index];
+    return reinterpret_cast<jlong> (pResult);
+}
+
 /*
  * Class:     com_github_stephengold_joltjni_VehicleConstraintSettings
  * Method:    getMaxPitchRollAngle
@@ -188,6 +202,18 @@ JNIEXPORT void JNICALL Java_com_github_stephengold_joltjni_VehicleConstraintSett
     pSettings->mMaxPitchRollAngle = angle;
 }
 
+/*
+ * Class:     com_github_stephengold_joltjni_VehicleConstraintSettings
+ * Method:    setNumAntiRollBars
+ * Signature: (JI)V
+ */
+JNIEXPORT void JNICALL Java_com_github_stephengold_joltjni_VehicleConstraintSettings_setNumAntiRollBars
+  (JNIEnv *, jclass, jlong settingsVa, int count) {
+    VehicleConstraintSettings * const pSettings
+            = reinterpret_cast<VehicleConstraintSettings *> (settingsVa);
+    pSettings->mAntiRollBars.resize(count);
+}
+
 /*
  * Class:     com_github_stephengold_joltjni_VehicleConstraintSettings
  * Method:    setUp