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- package roadtrip;
-
- import com.jme3.app.SimpleApplication;
- import com.jme3.bullet.BulletAppState;
- import com.jme3.bullet.PhysicsSpace;
- import com.jme3.bullet.collision.shapes.BoxCollisionShape;
- import com.jme3.bullet.collision.shapes.CompoundCollisionShape;
- import com.jme3.bullet.control.VehicleControl;
- import com.jme3.input.KeyInput;
- import com.jme3.input.controls.ActionListener;
- import com.jme3.input.controls.KeyTrigger;
- import com.jme3.material.Material;
- import com.jme3.math.ColorRGBA;
- import com.jme3.math.FastMath;
- import com.jme3.math.Matrix3f;
- import com.jme3.math.Vector3f;
- import com.jme3.scene.Geometry;
- import com.jme3.scene.Node;
- import com.jme3.scene.Spatial;
- import com.jme3.scene.shape.Cylinder;
-
- /**
- *
- * @author dejvino
- */
- public class RoadTrip extends SimpleApplication implements ActionListener {
-
- final int WEAK = 1;
- final int TRUCK = 2;
- final int SPORT = 3;
-
- final int carType = SPORT;
-
- private BulletAppState bulletAppState;
- private VehicleControl vehicle;
- private float accelerationForce = 200.0f;
- private float brakeForce = 100.0f;
- private float steeringValue = 0;
- private float accelerationValue = 0;
- private Vector3f jumpForce = new Vector3f(0, 3000, 0);
-
- public static void main(String[] args) {
- RoadTrip app = new RoadTrip();
- app.start();
- }
-
- Spatial map;
- Spatial car;
-
- @Override
- public void simpleInitApp() {
- bulletAppState = new BulletAppState();
- stateManager.attach(bulletAppState);
- bulletAppState.getPhysicsSpace().enableDebug(assetManager);
- PhysicsTestHelper.createPhysicsTestWorld(rootNode, assetManager, bulletAppState.getPhysicsSpace());
- setupKeys();
- buildPlayer();
-
- map = assetManager.loadModel("Scenes/TestMap.j3o");
- rootNode.attachChild(map);
- getPhysicsSpace().addAll(map);
-
- vehicle.setPhysicsLocation(new Vector3f(5f, 30f, 5f));
- }
-
- private PhysicsSpace getPhysicsSpace(){
- return bulletAppState.getPhysicsSpace();
- }
-
- private void setupKeys() {
- inputManager.addMapping("Lefts", new KeyTrigger(KeyInput.KEY_H));
- inputManager.addMapping("Rights", new KeyTrigger(KeyInput.KEY_K));
- inputManager.addMapping("Ups", new KeyTrigger(KeyInput.KEY_U));
- inputManager.addMapping("Downs", new KeyTrigger(KeyInput.KEY_J));
- inputManager.addMapping("Space", new KeyTrigger(KeyInput.KEY_SPACE));
- inputManager.addMapping("Reset", new KeyTrigger(KeyInput.KEY_RETURN));
- inputManager.addListener(this, "Lefts");
- inputManager.addListener(this, "Rights");
- inputManager.addListener(this, "Ups");
- inputManager.addListener(this, "Downs");
- inputManager.addListener(this, "Space");
- inputManager.addListener(this, "Reset");
- }
-
- private void buildPlayer() {
- Material mat = new Material(getAssetManager(), "Common/MatDefs/Misc/Unshaded.j3md");
- mat.getAdditionalRenderState().setWireframe(true);
- mat.setColor("Color", ColorRGBA.Red);
-
- //create a compound shape and attach the BoxCollisionShape for the car body at 0,1,0
- //this shifts the effective center of mass of the BoxCollisionShape to 0,-1,0
- CompoundCollisionShape compoundShape = new CompoundCollisionShape();
- BoxCollisionShape box = new BoxCollisionShape(new Vector3f(1.4f, 0.5f, 3.6f));
- compoundShape.addChildShape(box, new Vector3f(0, 1, 0));
-
- if (carType == TRUCK) {
- BoxCollisionShape boxCabin = new BoxCollisionShape(new Vector3f(1.4f, 0.8f, 1.0f));
- compoundShape.addChildShape(boxCabin, new Vector3f(0, 2, 2f));
- } else if (carType == SPORT) {
- BoxCollisionShape boxCabin = new BoxCollisionShape(new Vector3f(1.2f, 0.6f, 2.0f));
- compoundShape.addChildShape(boxCabin, new Vector3f(0, 2, -1f));
- }
-
- //create vehicle node
- Node vehicleNode=new Node("vehicleNode");
- vehicle = new VehicleControl(compoundShape, 500);
- vehicleNode.addControl(vehicle);
-
- //setting suspension values for wheels, this can be a bit tricky
- //see also https://docs.google.com/Doc?docid=0AXVUZ5xw6XpKZGNuZG56a3FfMzU0Z2NyZnF4Zmo&hl=en
- float stiffness = 30.0f;//200=f1 car
- float compValue = .1f; //(should be lower than damp)
- float dampValue = .2f;
- vehicle.setSuspensionCompression(compValue * 2.0f * FastMath.sqrt(stiffness));
- vehicle.setSuspensionDamping(dampValue * 2.0f * FastMath.sqrt(stiffness));
- vehicle.setSuspensionStiffness(stiffness);
- vehicle.setMaxSuspensionForce(10000.0f);
-
- //Create four wheels and add them at their locations
- Vector3f wheelDirection = new Vector3f(0, -1, 0); // was 0, -1, 0
- Vector3f wheelAxle = new Vector3f(-1, 0, 0); // was -1, 0, 0
- float radius = 1.0f;
- float restLength = 0.3f;
- float yOff = 0.5f;
- float xOff = 1.6f;
- float zOff = 2f;
-
- Cylinder wheelMesh = new Cylinder(16, 16, radius, radius * 0.2f, true);
-
- Node node1 = new Node("wheel 1 node");
- Geometry wheels1 = new Geometry("wheel 1", wheelMesh);
- node1.attachChild(wheels1);
- wheels1.rotate(0, FastMath.HALF_PI, 0);
- wheels1.setMaterial(mat);
- vehicle.addWheel(node1, new Vector3f(-xOff, yOff, zOff),
- wheelDirection, wheelAxle, restLength, radius, true);
-
- Node node2 = new Node("wheel 2 node");
- Geometry wheels2 = new Geometry("wheel 2", wheelMesh);
- node2.attachChild(wheels2);
- wheels2.rotate(0, FastMath.HALF_PI, 0);
- wheels2.setMaterial(mat);
- vehicle.addWheel(node2, new Vector3f(xOff, yOff, zOff),
- wheelDirection, wheelAxle, restLength, radius, true);
-
- Node node3 = new Node("wheel 3 node");
- Geometry wheels3 = new Geometry("wheel 3", wheelMesh);
- node3.attachChild(wheels3);
- wheels3.rotate(0, FastMath.HALF_PI, 0);
- wheels3.setMaterial(mat);
- vehicle.addWheel(node3, new Vector3f(-xOff, yOff, -zOff),
- wheelDirection, wheelAxle, restLength, radius, false);
-
- Node node4 = new Node("wheel 4 node");
- Geometry wheels4 = new Geometry("wheel 4", wheelMesh);
- node4.attachChild(wheels4);
- wheels4.rotate(0, FastMath.HALF_PI, 0);
- wheels4.setMaterial(mat);
- vehicle.addWheel(node4, new Vector3f(xOff, yOff, -zOff),
- wheelDirection, wheelAxle, restLength, radius, false);
-
- vehicleNode.attachChild(node1);
- vehicleNode.attachChild(node2);
- vehicleNode.attachChild(node3);
- vehicleNode.attachChild(node4);
-
- if (carType == TRUCK) {
- Node node5 = new Node("wheel 5 node");
- Geometry wheels5 = new Geometry("wheel 5", wheelMesh);
- node5.attachChild(wheels5);
- wheels5.rotate(0, FastMath.HALF_PI, 0);
- wheels5.setMaterial(mat);
- vehicle.addWheel(node5, new Vector3f(-xOff, yOff, 2.1f* -zOff),
- wheelDirection, wheelAxle, restLength, radius, false);
-
- Node node6 = new Node("wheel 6 node");
- Geometry wheels6 = new Geometry("wheel 6", wheelMesh);
- node6.attachChild(wheels6);
- wheels6.rotate(0, FastMath.HALF_PI, 0);
- wheels6.setMaterial(mat);
- vehicle.addWheel(node6, new Vector3f(xOff, yOff, 2.1f* -zOff),
- wheelDirection, wheelAxle, restLength, radius, false);
-
- vehicleNode.attachChild(node5);
- vehicleNode.attachChild(node6);
- }
-
- rootNode.attachChild(vehicleNode);
-
- getPhysicsSpace().add(vehicle);
- vehicle.setPhysicsLocation(new Vector3f(5f, 30f, 5f));
-
- vehicle.getWheel(0).setFrictionSlip(0.8f);
- vehicle.getWheel(1).setFrictionSlip(0.8f);
- vehicle.getWheel(2).setFrictionSlip(0.6f);
- vehicle.getWheel(3).setFrictionSlip(0.6f);
-
- if (carType == TRUCK) {
- vehicle.getWheel(4).setFrictionSlip(0.6f);
- vehicle.getWheel(5).setFrictionSlip(0.6f);
-
- accelerationForce = 1400f;
- brakeForce = 200f;
- } else if (carType == SPORT) {
- accelerationForce = 20000f;
- brakeForce = 200f;
- }
- }
-
- @Override
- public void simpleUpdate(float tpf) {
- cam.setLocation(new Vector3f(-10f, 35f, -10f));
- cam.lookAt(vehicle.getPhysicsLocation(), Vector3f.UNIT_Y);
- }
-
- public void onAction(String binding, boolean value, float tpf) {
- float steerMax = 0.5f;
- if (carType == TRUCK) {
- steerMax = 0.7f;
- }
- if (binding.equals("Lefts")) {
- if (value) {
- steeringValue += steerMax;
- } else {
- steeringValue += -steerMax;
- }
- vehicle.steer(steeringValue);
- } else if (binding.equals("Rights")) {
- if (value) {
- steeringValue += -steerMax;
- } else {
- steeringValue += steerMax;
- }
- vehicle.steer(steeringValue);
- } else if (binding.equals("Ups")) {
- if (value) {
- accelerationValue += accelerationForce;
- } else {
- accelerationValue -= accelerationForce;
- }
- vehicle.accelerate(2, accelerationValue);
- vehicle.accelerate(3, accelerationValue);
- if (carType == TRUCK) {
- vehicle.accelerate(4, accelerationValue);
- vehicle.accelerate(5, accelerationValue);
- }
- } else if (binding.equals("Downs")) {
- float b;
- if (value) {
- b = brakeForce;
- } else {
- b = 0f;
- }
- vehicle.brake(0, b);
- vehicle.brake(1, b);
- } else if (binding.equals("Space")) {
- if (value) {
- vehicle.applyImpulse(jumpForce, Vector3f.ZERO);
- }
- } else if (binding.equals("Reset")) {
- if (value) {
- System.out.println("Reset");
- vehicle.setPhysicsLocation(Vector3f.ZERO);
- vehicle.setPhysicsRotation(new Matrix3f());
- vehicle.setLinearVelocity(Vector3f.ZERO);
- vehicle.setAngularVelocity(Vector3f.ZERO);
- vehicle.resetSuspension();
- } else {
- }
- }
- }
- }
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