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+/*
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+ * Copyright (c) 2018 jMonkeyEngine
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+ * All rights reserved.
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+ *
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+ * Redistribution and use in source and binary forms, with or without
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+ * modification, are permitted provided that the following conditions are
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+ * met:
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+ *
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+ * * Redistributions of source code must retain the above copyright
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+ * notice, this list of conditions and the following disclaimer.
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+ *
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+ * * Redistributions in binary form must reproduce the above copyright
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+ * notice, this list of conditions and the following disclaimer in the
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+ * documentation and/or other materials provided with the distribution.
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+ *
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+ * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
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+ * may be used to endorse or promote products derived from this software
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+ * without specific prior written permission.
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+ *
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+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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+ */
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+package jme3test.bullet;
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+
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+import com.jme3.app.SimpleApplication;
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+import com.jme3.asset.AssetNotFoundException;
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+import com.jme3.asset.ModelKey;
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+import com.jme3.asset.plugins.FileLocator;
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+import com.jme3.bullet.collision.shapes.CollisionShape;
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+import com.jme3.bullet.collision.shapes.SphereCollisionShape;
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+import com.jme3.bullet.control.RigidBodyControl;
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+import com.jme3.bullet.objects.PhysicsRigidBody;
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+import com.jme3.export.JmeExporter;
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+import com.jme3.export.binary.BinaryExporter;
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+import com.jme3.math.Matrix3f;
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+import com.jme3.math.Vector3f;
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+import com.jme3.scene.Node;
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+import com.jme3.scene.Spatial;
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+import com.jme3.scene.control.Control;
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+import java.io.File;
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+import java.io.IOException;
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+
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+/**
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+ * Test case for JME issue #970: RigidBodyControl doesn't read/write velocities.
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+ *
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+ * If successful, no AssertionError will be thrown.
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+ *
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+ * @author Stephen Gold [email protected]
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+ */
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+public class TestIssue970 extends SimpleApplication {
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+
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+ private int fileIndex = 0;
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+
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+ public static void main(String[] args) {
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+ TestIssue970 app = new TestIssue970();
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+ app.start();
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+ }
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+
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+ @Override
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+ public void simpleInitApp() {
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+ assetManager.registerLocator(".", FileLocator.class);
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+
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+ CollisionShape shape = new SphereCollisionShape(1f);
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+ RigidBodyControl rbc = new RigidBodyControl(shape, 1f);
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+ setParameters(rbc);
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+ verifyParameters(rbc);
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+ RigidBodyControl rbcCopy = (RigidBodyControl) saveThenLoad(rbc);
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+ verifyParameters(rbcCopy);
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+
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+ stop();
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+ }
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+
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+ /**
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+ * Clone a body that implements Control by saving and then loading it.
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+ *
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+ * @param sgc the body/control to copy (not null, unaffected)
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+ * @return a new body/control
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+ */
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+ private PhysicsRigidBody saveThenLoad(PhysicsRigidBody body) {
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+ Control sgc = (Control) body;
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+ Node savedNode = new Node();
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+ /*
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+ * Add the Control to the Node without altering its physics transform.
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+ */
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+ Vector3f pl = body.getPhysicsLocation(null);
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+ Matrix3f pr = body.getPhysicsRotationMatrix(null);
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+ savedNode.addControl(sgc);
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+ body.setPhysicsLocation(pl);
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+ body.setPhysicsRotation(pr);
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+
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+ String fileName = String.format("tmp%d.j3o", ++fileIndex);
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+ File file = new File(fileName);
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+
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+ JmeExporter exporter = BinaryExporter.getInstance();
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+ try {
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+ exporter.save(savedNode, file);
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+ } catch (IOException exception) {
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+ assert false;
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+ }
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+
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+ ModelKey key = new ModelKey(fileName);
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+ Spatial loadedNode = new Node();
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+ try {
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+ loadedNode = assetManager.loadAsset(key);
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+ } catch (AssetNotFoundException e) {
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+ assert false;
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+ }
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+ file.delete();
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+ Control loadedSgc = loadedNode.getControl(0);
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+
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+ return (PhysicsRigidBody) loadedSgc;
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+ }
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+
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+ private void setParameters(PhysicsRigidBody body) {
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+ body.setAngularVelocity(new Vector3f(0.04f, 0.05f, 0.06f));
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+ body.setLinearVelocity(new Vector3f(0.26f, 0.27f, 0.28f));
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+ }
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+
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+ private void verifyParameters(PhysicsRigidBody body) {
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+ Vector3f w = body.getAngularVelocity();
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+ assert w.x == 0.04f : w;
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+ assert w.y == 0.05f : w;
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+ assert w.z == 0.06f : w;
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+
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+ Vector3f v = body.getLinearVelocity();
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+ assert v.x == 0.26f : v;
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+ assert v.y == 0.27f : v;
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+ assert v.z == 0.28f : v;
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+ }
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+}
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Stephen Gold