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add test for issue #1125 (heightfield shapes don't match TerrainQuad)

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Stephen Gold 2019-06-18 12:18:50 -07:00
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jme3-examples/src/main/java/jme3test/bullet/TestIssue1125.java Normal file
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/*
* Copyright (c) 2019 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
* may be used to endorse or promote products derived from this software
* 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; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package jme3test.bullet;
import com.jme3.app.SimpleApplication;
import com.jme3.bullet.BulletAppState;
import com.jme3.bullet.PhysicsSpace;
import com.jme3.bullet.collision.shapes.CollisionShape;
import com.jme3.bullet.control.RigidBodyControl;
import com.jme3.bullet.util.CollisionShapeFactory;
import com.jme3.font.BitmapText;
import com.jme3.material.Material;
import com.jme3.material.RenderState;
import com.jme3.math.ColorRGBA;
import com.jme3.math.Quaternion;
import com.jme3.math.Vector3f;
import com.jme3.terrain.geomipmap.TerrainQuad;
import java.util.logging.Logger;
/**
* Test case for JME issue #1125: heightfield collision shapes don't match
* TerrainQuad.
* <p>
* If successful, just one set of grid diagonals will be visible. If
* unsuccessful, you'll see both green diagonals (the TerrainQuad) and
* perpendicular blue diagonals (physics debug).
* <p>
* Use this test with jme3-bullet only; it can yield false success with
* jme3-jbullet due to JME issue #1129.
*
* @author Stephen Gold sgold@sonic.net
*/
public class TestIssue1125 extends SimpleApplication {
// *************************************************************************
// constants and loggers
/**
* message logger for this class
*/
final public static Logger logger
= Logger.getLogger(TestIssue1125.class.getName());
// *************************************************************************
// fields
/**
* height array for a small heightfield
*/
final private float[] nineHeights = new float[9];
/**
* green wireframe material for the TerrainQuad
*/
private Material quadMaterial;
/**
* space for physics simulation
*/
private PhysicsSpace physicsSpace;
// *************************************************************************
// new methods exposed
/**
* Main entry point for the TestIssue1125 application.
*
* @param ignored array of command-line arguments (not null)
*/
public static void main(String[] ignored) {
new TestIssue1125().start();
}
// *************************************************************************
// SimpleApplication methods
/**
* Initialize this application.
*/
@Override
public void simpleInitApp() {
configureCamera();
configureMaterials();
viewPort.setBackgroundColor(new ColorRGBA(0.5f, 0.2f, 0.2f, 1f));
configurePhysics();
initializeHeightData();
addTerrain();
showHints();
}
// *************************************************************************
// private methods
/**
* Add 3x3 terrain to the scene and the PhysicsSpace.
*/
private void addTerrain() {
int patchSize = 3;
int mapSize = 3;
TerrainQuad quad
= new TerrainQuad("terrain", patchSize, mapSize, nineHeights);
rootNode.attachChild(quad);
quad.setMaterial(quadMaterial);
CollisionShape shape = CollisionShapeFactory.createMeshShape(quad);
float massForStatic = 0f;
RigidBodyControl rbc = new RigidBodyControl(shape, massForStatic);
rbc.setPhysicsSpace(physicsSpace);
quad.addControl(rbc);
}
/**
* Configure the camera during startup.
*/
private void configureCamera() {
float fHeight = cam.getFrustumTop() - cam.getFrustumBottom();
float fWidth = cam.getFrustumRight() - cam.getFrustumLeft();
float fAspect = fWidth / fHeight;
float yDegrees = 45f;
float near = 0.02f;
float far = 20f;
cam.setFrustumPerspective(yDegrees, fAspect, near, far);
flyCam.setMoveSpeed(5f);
cam.setLocation(new Vector3f(2f, 4.7f, 0.4f));
cam.setRotation(new Quaternion(0.348f, -0.64f, 0.4f, 0.556f));
}
/**
* Configure materials during startup.
*/
private void configureMaterials() {
quadMaterial = new Material(assetManager,
"Common/MatDefs/Misc/Unshaded.j3md");
quadMaterial.setColor("Color", ColorRGBA.Green.clone());
RenderState ars = quadMaterial.getAdditionalRenderState();
ars.setWireframe(true);
}
/**
* Configure physics during startup.
*/
private void configurePhysics() {
BulletAppState bulletAppState = new BulletAppState();
stateManager.attach(bulletAppState);
bulletAppState.setDebugEnabled(true);
physicsSpace = bulletAppState.getPhysicsSpace();
}
/**
* Initialize the height data during startup.
*/
private void initializeHeightData() {
nineHeights[0] = 1f;
nineHeights[1] = 0f;
nineHeights[2] = 1f;
nineHeights[3] = 0f;
nineHeights[4] = 0.5f;
nineHeights[5] = 0f;
nineHeights[6] = 1f;
nineHeights[7] = 0f;
nineHeights[8] = 1f;
}
private void showHints() {
guiFont = assetManager.loadFont("Interface/Fonts/Default.fnt");
int numLines = 3;
BitmapText lines[] = new BitmapText[numLines];
for (int i = 0; i < numLines; ++i) {
lines[i] = new BitmapText(guiFont);
}
String p = "Test for jMonkeyEngine issue #1125";
if (isNativeBullet()) {
lines[0].setText(p + " with native Bullet");
} else {
lines[0].setText(p + " with JBullet (may yield false success)");
}
lines[1].setText("Use W/A/S/D/Q/Z/arrow keys to move the camera.");
lines[2].setText("F5: render stats, C: camera pos, M: mem stats");
float textHeight = guiFont.getCharSet().getLineHeight();
float viewHeight = cam.getHeight();
float viewWidth = cam.getWidth();
for (int i = 0; i < numLines; ++i) {
float left = Math.round((viewWidth - lines[i].getLineWidth()) / 2f);
float top = viewHeight - i * textHeight;
lines[i].setLocalTranslation(left, top, 0f);
guiNode.attachChild(lines[i]);
}
}
/**
* Determine which physics library is in use.
*
* @return true for C++ Bullet, false for JBullet (jme3-jbullet)
*/
private boolean isNativeBullet() {
try {
Class clazz = Class.forName("com.jme3.bullet.util.NativeMeshUtil");
return clazz != null;
} catch (ClassNotFoundException exception) {
return false;
}
}
}