fix for issue #897

jme3-examples/src/main/java/jme3test/bullet/TestBetterCharacter.java

@@ -1,26 +1,33 @@
 /*
- * Copyright (c) 2009-2012 jMonkeyEngine All rights reserved. <p/>
+ * Copyright (c) 2009-2018 jMonkeyEngine
+ * All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
+ * modification, are permitted provided that the following conditions are
- * 
+ * met:
- * * Redistributions of source code must retain the above copyright notice,
+ *
- * this list of conditions and the following disclaimer. <p/> * Redistributions
+ * * Redistributions of source code must retain the above copyright
- * in binary form must reproduce the above copyright notice, this list of
+ *   notice, this list of conditions and the following disclaimer.
- * conditions and the following disclaimer in the documentation and/or other
+ *
- * materials provided with the distribution. <p/> * Neither the name of
+ * * Redistributions in binary form must reproduce the above copyright
- * 'jMonkeyEngine' nor the names of its contributors may be used to endorse or
+ *   notice, this list of conditions and the following disclaimer in the
- * promote products derived from this software without specific prior written
+ *   documentation and/or other materials provided with the distribution.
- * permission. <p/> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ *
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
+ * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
- * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ *   may be used to endorse or promote products derived from this software
- * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 package jme3test.bullet;
 
@@ -30,7 +37,6 @@ import com.jme3.bullet.PhysicsSpace;
 import com.jme3.bullet.collision.shapes.MeshCollisionShape;
 import com.jme3.bullet.control.BetterCharacterControl;
 import com.jme3.bullet.control.RigidBodyControl;
-import com.jme3.bullet.debug.DebugTools;
 import com.jme3.input.KeyInput;
 import com.jme3.input.controls.ActionListener;
 import com.jme3.input.controls.KeyTrigger;
@@ -80,7 +86,13 @@ public class TestBetterCharacter extends SimpleApplication implements ActionList
         setupKeys();
 
         // activate physics
-        bulletAppState = new BulletAppState();
+        bulletAppState = new BulletAppState() {
+            @Override
+            public void prePhysicsTick(PhysicsSpace space, float tpf) {
+                // Apply radial gravity near the planet, downward gravity elsewhere.
+                checkPlanetGravity();
+            }
+        };
         stateManager.attach(bulletAppState);
         bulletAppState.setDebugEnabled(true);
 
@@ -123,9 +135,6 @@ public class TestBetterCharacter extends SimpleApplication implements ActionList
 
     @Override
     public void simpleUpdate(float tpf) {
-        // Apply planet gravity to character if close enough (see below)
-        checkPlanetGravity();
-
         // Get current forward and left vectors of model by using its rotation
         // to rotate the unit vectors
         Vector3f modelForwardDir = characterNode.getWorldRotation().mult(Vector3f.UNIT_Z);