Test for issue #1120 - JBullet GImpactShape fall-through (#1137)

jme3-examples/src/main/java/jme3test/bullet/TestIssue1120.java

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+/*
+ * Copyright (c) 2009-2019 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.GImpactCollisionShape;
+import com.jme3.bullet.control.RigidBodyControl;
+import com.jme3.bullet.debug.BulletDebugAppState;
+import com.jme3.font.BitmapFont;
+import com.jme3.font.BitmapText;
+import com.jme3.input.KeyInput;
+import com.jme3.input.MouseInput;
+import com.jme3.input.controls.ActionListener;
+import com.jme3.input.controls.KeyTrigger;
+import com.jme3.input.controls.MouseButtonTrigger;
+import com.jme3.light.DirectionalLight;
+import com.jme3.material.Material;
+import com.jme3.math.ColorRGBA;
+import com.jme3.math.Quaternion;
+import com.jme3.math.Vector3f;
+import com.jme3.scene.Geometry;
+import com.jme3.scene.Mesh;
+import com.jme3.scene.Spatial;
+import com.jme3.scene.shape.Cylinder;
+import com.jme3.system.AppSettings;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Test demonstrating a GImpactCollisionShape falling through a curved mesh, when using JBullet. Bullet native
+ * does not experience this issue at the time this test was created.
+ *
+ * @author lou
+ */
+public class TestIssue1120 extends SimpleApplication {
+
+    private static TestIssue1120 test;
+    private BulletAppState bulletAppState;
+    private final boolean physicsDebug = true;
+    protected BitmapFont font;
+    private final BitmapText[] testInfo = new BitmapText[2];
+    private BitmapText speedText;
+    private final List<Spatial> testObjects = new ArrayList<>();
+    private static final boolean SKIP_SETTINGS = false;//Used for repeated runs of this test during dev
+    private float bulletSpeed = 0.5f;
+
+    public static void main(String[] args) {
+        test = new TestIssue1120();
+        test.setSettings(new AppSettings(true));
+        test.settings.setFrameRate(60);
+        if (SKIP_SETTINGS) {
+            test.settings.setWidth(1920);
+            test.settings.setHeight(1150);
+            test.showSettings = !SKIP_SETTINGS;
+        }
+        test.start();
+    }
+
+    @Override
+    public void simpleInitApp() {
+        cam.setLocation(new Vector3f(-7.285349f, -2.2638104f, 4.954474f));
+        cam.setRotation(new Quaternion(0.07345789f, 0.92521834f, -0.2876841f, 0.23624739f));
+        getFlyByCamera().setMoveSpeed(5);
+
+        DirectionalLight dl = new DirectionalLight();
+        dl.setDirection(new Vector3f(-1, -1, -1).normalizeLocal());
+        dl.setColor(ColorRGBA.Green);
+        rootNode.addLight(dl);
+
+        //Setup interactive test controls
+        inputManager.addMapping("restart", new KeyTrigger(KeyInput.KEY_SPACE));
+        inputManager.addMapping("pause", new MouseButtonTrigger(MouseInput.BUTTON_LEFT));
+        inputManager.addMapping("+", new KeyTrigger(KeyInput.KEY_ADD), new KeyTrigger(KeyInput.KEY_EQUALS));
+        inputManager.addMapping("-", new KeyTrigger(KeyInput.KEY_SUBTRACT), new KeyTrigger(KeyInput.KEY_MINUS));
+        inputManager.addListener((ActionListener) (String name, boolean isPressed, float tpf) -> {
+            if (!isPressed) {
+                return;
+            }
+            switch (name) {
+                case "restart":
+                    cleanup();
+                    initializeNewTest();
+                    break;
+                case "pause":
+                    bulletAppState.setSpeed(bulletAppState.getSpeed() > 0.1 ? 0 : bulletSpeed);
+                    break;
+                case "+":
+                    bulletSpeed += 0.1f;
+                    if (bulletSpeed > 1f) {
+                        bulletSpeed = 1f;
+                    }
+                    bulletAppState.setSpeed(bulletSpeed);
+                    break;
+                case "-":
+                    bulletSpeed -= 0.1f;
+                    if (bulletSpeed < 0.1f) {
+                        bulletSpeed = 0.1f;
+                    }
+                    bulletAppState.setSpeed(bulletSpeed);
+                    break;
+            }
+        }, "pause", "restart", "+", "-");
+
+        guiNode = getGuiNode();
+        font = assetManager.loadFont("Interface/Fonts/Default.fnt");
+        testInfo[0] = new BitmapText(font);
+        testInfo[1] = new BitmapText(font);
+        speedText = new BitmapText(font);
+
+        float lineHeight = testInfo[0].getLineHeight();
+        testInfo[0].setText("Camera move: W/A/S/D/Q/Z     +/-: Increase/Decrease Speed");
+        testInfo[0].setLocalTranslation(5, test.settings.getHeight(), 0);
+        guiNode.attachChild(testInfo[0]);
+        testInfo[1].setText("Left Click: Toggle pause            Space: Restart test");
+        testInfo[1].setLocalTranslation(5, test.settings.getHeight() - lineHeight, 0);
+        guiNode.attachChild(testInfo[1]);
+
+        speedText.setLocalTranslation(202, lineHeight * 1, 0);
+        guiNode.attachChild(speedText);
+
+        initializeNewTest();
+    }
+
+    private void initializeNewTest() {
+        bulletAppState = new BulletAppState();
+        bulletAppState.setDebugEnabled(physicsDebug);
+        stateManager.attach(bulletAppState);
+
+        bulletAppState.setSpeed(bulletSpeed);
+
+        dropTest();
+
+        Geometry leftFloor = PhysicsTestHelper.createMeshTestFloor(assetManager, 20, new Vector3f(-11, -5, -10));
+        addObject(leftFloor);
+
+        //Hide physics debug visualization for floors
+        if (physicsDebug) {
+            BulletDebugAppState bulletDebugAppState = stateManager.getState(BulletDebugAppState.class);
+            bulletDebugAppState.setFilter((Object obj) -> {
+                return !(obj.equals(leftFloor.getControl(RigidBodyControl.class)));
+            });
+        }
+    }
+
+    private void addObject(Spatial s) {
+        testObjects.add(s);
+        rootNode.attachChild(s);
+        physicsSpace().add(s);
+    }
+
+    private void dropTest() {
+        attachTestObject(new Cylinder(2, 16, 0.2f, 2f, true), new Vector3f(0f, 2f, -5f), 2);
+        attachTestObject(new Cylinder(2, 16, 0.2f, 2f, true), new Vector3f(-1f, 2f, -5f), 2);
+        attachTestObject(new Cylinder(2, 16, 0.2f, 2f, true), new Vector3f(-2f, 2f, -5f), 2);
+        attachTestObject(new Cylinder(2, 16, 0.2f, 2f, true), new Vector3f(-3f, 2f, -5f), 2);
+    }
+
+    private void attachTestObject(Mesh mesh, Vector3f position, float mass) {
+        Material material = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
+        Geometry g = new Geometry("mesh", mesh);
+        g.setLocalTranslation(position);
+        g.setMaterial(material);
+
+        RigidBodyControl control = new RigidBodyControl(new GImpactCollisionShape(mesh), mass);
+        g.addControl(control);
+        addObject(g);
+    }
+
+    private PhysicsSpace physicsSpace() {
+        return bulletAppState.getPhysicsSpace();
+    }
+
+    @Override
+    public void simpleUpdate(float tpf) {
+        speedText.setText("Speed: " + String.format("%.1f", bulletSpeed));
+    }
+
+    private void cleanup() {
+        stateManager.detach(bulletAppState);
+        stateManager.detach(stateManager.getState(BulletDebugAppState.class));
+        for (Spatial s : testObjects) {
+            rootNode.detachChild(s);
+        }
+    }
+}