1/*
2 * Copyright (c) 2009-2010 jMonkeyEngine
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
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10 *   notice, this list of conditions and the following disclaimer.
11 *
12 * * Redistributions in binary form must reproduce the above copyright
13 *   notice, this list of conditions and the following disclaimer in the
14 *   documentation and/or other materials provided with the distribution.
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17 *   may be used to endorse or promote products derived from this software
18 *   without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32package jme3test.bullet;
33
34import com.jme3.app.SimpleApplication;
35import com.jme3.bounding.BoundingBox;
36import com.jme3.bullet.BulletAppState;
37import com.jme3.bullet.PhysicsSpace;
38import com.jme3.bullet.collision.shapes.CollisionShape;
39import com.jme3.bullet.control.VehicleControl;
40import com.jme3.bullet.objects.VehicleWheel;
41import com.jme3.bullet.util.CollisionShapeFactory;
42import com.jme3.input.KeyInput;
43import com.jme3.input.controls.ActionListener;
44import com.jme3.input.controls.KeyTrigger;
45import com.jme3.light.DirectionalLight;
46import com.jme3.math.FastMath;
47import com.jme3.math.Matrix3f;
48import com.jme3.math.Vector3f;
49import com.jme3.renderer.queue.RenderQueue.ShadowMode;
50import com.jme3.scene.Geometry;
51import com.jme3.scene.Node;
52import com.jme3.scene.Spatial;
53import com.jme3.shadow.BasicShadowRenderer;
54
55public class TestFancyCar extends SimpleApplication implements ActionListener {
56
57    private BulletAppState bulletAppState;
58    private VehicleControl player;
59    private VehicleWheel fr, fl, br, bl;
60    private Node node_fr, node_fl, node_br, node_bl;
61    private float wheelRadius;
62    private float steeringValue = 0;
63    private float accelerationValue = 0;
64    private Node carNode;
65
66    public static void main(String[] args) {
67        TestFancyCar app = new TestFancyCar();
68        app.start();
69    }
70
71    private void setupKeys() {
72        inputManager.addMapping("Lefts", new KeyTrigger(KeyInput.KEY_H));
73        inputManager.addMapping("Rights", new KeyTrigger(KeyInput.KEY_K));
74        inputManager.addMapping("Ups", new KeyTrigger(KeyInput.KEY_U));
75        inputManager.addMapping("Downs", new KeyTrigger(KeyInput.KEY_J));
76        inputManager.addMapping("Space", new KeyTrigger(KeyInput.KEY_SPACE));
77        inputManager.addMapping("Reset", new KeyTrigger(KeyInput.KEY_RETURN));
78        inputManager.addListener(this, "Lefts");
79        inputManager.addListener(this, "Rights");
80        inputManager.addListener(this, "Ups");
81        inputManager.addListener(this, "Downs");
82        inputManager.addListener(this, "Space");
83        inputManager.addListener(this, "Reset");
84    }
85
86    @Override
87    public void simpleInitApp() {
88        bulletAppState = new BulletAppState();
89        stateManager.attach(bulletAppState);
90//        bulletAppState.getPhysicsSpace().enableDebug(assetManager);
91        if (settings.getRenderer().startsWith("LWJGL")) {
92            BasicShadowRenderer bsr = new BasicShadowRenderer(assetManager, 512);
93            bsr.setDirection(new Vector3f(-0.5f, -0.3f, -0.3f).normalizeLocal());
94            viewPort.addProcessor(bsr);
95        }
96        cam.setFrustumFar(150f);
97        flyCam.setMoveSpeed(10);
98
99        setupKeys();
100        PhysicsTestHelper.createPhysicsTestWorld(rootNode, assetManager, bulletAppState.getPhysicsSpace());
101//        setupFloor();
102        buildPlayer();
103
104        DirectionalLight dl = new DirectionalLight();
105        dl.setDirection(new Vector3f(-0.5f, -1f, -0.3f).normalizeLocal());
106        rootNode.addLight(dl);
107
108        dl = new DirectionalLight();
109        dl.setDirection(new Vector3f(0.5f, -0.1f, 0.3f).normalizeLocal());
110        rootNode.addLight(dl);
111    }
112
113    private PhysicsSpace getPhysicsSpace() {
114        return bulletAppState.getPhysicsSpace();
115    }
116
117//    public void setupFloor() {
118//        Material mat = assetManager.loadMaterial("Textures/Terrain/BrickWall/BrickWall.j3m");
119//        mat.getTextureParam("DiffuseMap").getTextureValue().setWrap(WrapMode.Repeat);
120////        mat.getTextureParam("NormalMap").getTextureValue().setWrap(WrapMode.Repeat);
121////        mat.getTextureParam("ParallaxMap").getTextureValue().setWrap(WrapMode.Repeat);
122//
123//        Box floor = new Box(Vector3f.ZERO, 140, 1f, 140);
124//        floor.scaleTextureCoordinates(new Vector2f(112.0f, 112.0f));
125//        Geometry floorGeom = new Geometry("Floor", floor);
126//        floorGeom.setShadowMode(ShadowMode.Receive);
127//        floorGeom.setMaterial(mat);
128//
129//        PhysicsNode tb = new PhysicsNode(floorGeom, new MeshCollisionShape(floorGeom.getMesh()), 0);
130//        tb.setLocalTranslation(new Vector3f(0f, -6, 0f));
131////        tb.attachDebugShape(assetManager);
132//        rootNode.attachChild(tb);
133//        getPhysicsSpace().add(tb);
134//    }
135
136    private Geometry findGeom(Spatial spatial, String name) {
137        if (spatial instanceof Node) {
138            Node node = (Node) spatial;
139            for (int i = 0; i < node.getQuantity(); i++) {
140                Spatial child = node.getChild(i);
141                Geometry result = findGeom(child, name);
142                if (result != null) {
143                    return result;
144                }
145            }
146        } else if (spatial instanceof Geometry) {
147            if (spatial.getName().startsWith(name)) {
148                return (Geometry) spatial;
149            }
150        }
151        return null;
152    }
153
154    private void buildPlayer() {
155        float stiffness = 120.0f;//200=f1 car
156        float compValue = 0.2f; //(lower than damp!)
157        float dampValue = 0.3f;
158        final float mass = 400;
159
160        //Load model and get chassis Geometry
161        carNode = (Node)assetManager.loadModel("Models/Ferrari/Car.scene");
162        carNode.setShadowMode(ShadowMode.Cast);
163        Geometry chasis = findGeom(carNode, "Car");
164        BoundingBox box = (BoundingBox) chasis.getModelBound();
165
166        //Create a hull collision shape for the chassis
167        CollisionShape carHull = CollisionShapeFactory.createDynamicMeshShape(chasis);
168
169        //Create a vehicle control
170        player = new VehicleControl(carHull, mass);
171        carNode.addControl(player);
172
173        //Setting default values for wheels
174        player.setSuspensionCompression(compValue * 2.0f * FastMath.sqrt(stiffness));
175        player.setSuspensionDamping(dampValue * 2.0f * FastMath.sqrt(stiffness));
176        player.setSuspensionStiffness(stiffness);
177        player.setMaxSuspensionForce(10000);
178
179        //Create four wheels and add them at their locations
180        //note that our fancy car actually goes backwards..
181        Vector3f wheelDirection = new Vector3f(0, -1, 0);
182        Vector3f wheelAxle = new Vector3f(-1, 0, 0);
183
184        Geometry wheel_fr = findGeom(carNode, "WheelFrontRight");
185        wheel_fr.center();
186        box = (BoundingBox) wheel_fr.getModelBound();
187        wheelRadius = box.getYExtent();
188        float back_wheel_h = (wheelRadius * 1.7f) - 1f;
189        float front_wheel_h = (wheelRadius * 1.9f) - 1f;
190        player.addWheel(wheel_fr.getParent(), box.getCenter().add(0, -front_wheel_h, 0),
191                wheelDirection, wheelAxle, 0.2f, wheelRadius, true);
192
193        Geometry wheel_fl = findGeom(carNode, "WheelFrontLeft");
194        wheel_fl.center();
195        box = (BoundingBox) wheel_fl.getModelBound();
196        player.addWheel(wheel_fl.getParent(), box.getCenter().add(0, -front_wheel_h, 0),
197                wheelDirection, wheelAxle, 0.2f, wheelRadius, true);
198
199        Geometry wheel_br = findGeom(carNode, "WheelBackRight");
200        wheel_br.center();
201        box = (BoundingBox) wheel_br.getModelBound();
202        player.addWheel(wheel_br.getParent(), box.getCenter().add(0, -back_wheel_h, 0),
203                wheelDirection, wheelAxle, 0.2f, wheelRadius, false);
204
205        Geometry wheel_bl = findGeom(carNode, "WheelBackLeft");
206        wheel_bl.center();
207        box = (BoundingBox) wheel_bl.getModelBound();
208        player.addWheel(wheel_bl.getParent(), box.getCenter().add(0, -back_wheel_h, 0),
209                wheelDirection, wheelAxle, 0.2f, wheelRadius, false);
210
211        player.getWheel(2).setFrictionSlip(4);
212        player.getWheel(3).setFrictionSlip(4);
213
214        rootNode.attachChild(carNode);
215        getPhysicsSpace().add(player);
216    }
217
218    public void onAction(String binding, boolean value, float tpf) {
219        if (binding.equals("Lefts")) {
220            if (value) {
221                steeringValue += .5f;
222            } else {
223                steeringValue += -.5f;
224            }
225            player.steer(steeringValue);
226        } else if (binding.equals("Rights")) {
227            if (value) {
228                steeringValue += -.5f;
229            } else {
230                steeringValue += .5f;
231            }
232            player.steer(steeringValue);
233        } //note that our fancy car actually goes backwards..
234        else if (binding.equals("Ups")) {
235            if (value) {
236                accelerationValue -= 800;
237            } else {
238                accelerationValue += 800;
239            }
240            player.accelerate(accelerationValue);
241            player.setCollisionShape(CollisionShapeFactory.createDynamicMeshShape(findGeom(carNode, "Car")));
242        } else if (binding.equals("Downs")) {
243            if (value) {
244                player.brake(40f);
245            } else {
246                player.brake(0f);
247            }
248        } else if (binding.equals("Reset")) {
249            if (value) {
250                System.out.println("Reset");
251                player.setPhysicsLocation(Vector3f.ZERO);
252                player.setPhysicsRotation(new Matrix3f());
253                player.setLinearVelocity(Vector3f.ZERO);
254                player.setAngularVelocity(Vector3f.ZERO);
255                player.resetSuspension();
256            } else {
257            }
258        }
259    }
260
261    @Override
262    public void simpleUpdate(float tpf) {
263        cam.lookAt(carNode.getWorldTranslation(), Vector3f.UNIT_Y);
264    }
265}
266