Good afternoon everyone! I am working on a zombie hunting humans game and I am almost done though I have run into a problem with the animation.
[java]testHuman = assetManager.loadModel(“Models/new_thin_zombie.j3o”);
testHuman.setMaterial(zombieMaterial);
testHuman.scale(.5f);
testHuman.setLocalTranslation(0, 0, 0);
humanNode.attachChild(testHuman);
humanControl = testHuman.getControl(AnimControl.class);
humanControl.addListener(this);
humanChannel = humanControl.createChannel();
humanChannel.setAnim("walk", 0);[/java]
This is where I am having the problems at.
At the “humanControl.addListener(this);” line I get this null pointer exception:
[java]SEVERE: Uncaught exception thrown in Thread[LWJGL Renderer Thread,5,main]
java.lang.NullPointerException
at mygame.Main.simpleInitApp(Main.java:109)
at com.jme3.app.SimpleApplication.initialize(SimpleApplication.java:225)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.initInThread(LwjglAbstractDisplay.java:130)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:207)
at java.lang.Thread.run(Thread.java:722)[/java]
Here is the code for the entire class if that would help and if any other code from the other classes is necessary just ask:
[java]package mygame;
import com.jme3.animation.AnimChannel;
import com.jme3.animation.AnimControl;
import com.jme3.animation.AnimEventListener;
import com.jme3.animation.LoopMode;
import com.jme3.app.SimpleApplication;
import com.jme3.bullet.BulletAppState;
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.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.Quaternion;
import com.jme3.math.Vector3f;
import com.jme3.post.FilterPostProcessor;
import com.jme3.post.filters.FogFilter;
import com.jme3.renderer.RenderManager;
import com.jme3.scene.Node;
import com.jme3.scene.Spatial;
import com.jme3.texture.Texture;
import com.jme3.water.SimpleWaterProcessor;
/**
-
test
-
@author Benzoate
*/
public class Main extends SimpleApplication implements AnimEventListener{public static void main(String[] args) {
Main app = new Main();
app.start();
}static BulletAppState bulletAppState;
BitmapText hud;static Spatial world;
static Node worldNode, humanNode, zombieNode;
static Spatial waterPlane;
static SimpleWaterProcessor waterProcessor;static Material zombieMaterial, humanMaterial;
static Texture zombieTexture, humanTexture;
FogFilter fog;
FilterPostProcessor fpp;
static float zombieMoan = 0;
static int humansLeft = 6;static Spatial testHuman;
static AnimControl humanControl;
static AnimChannel humanChannel;@Override
public void simpleInitApp() {
bulletAppState = new BulletAppState();
stateManager.attach(bulletAppState);
viewPort.setBackgroundColor(ColorRGBA.DarkGray);
fpp = new FilterPostProcessor(assetManager);
fog = new FogFilter();
fog.setFogColor(new ColorRGBA(0.9f, 0.9f, 0.9f, 1.0f));
fog.setFogDistance(25);
fog.setFogDensity(.8f);
fpp.addFilter(fog);
viewPort.addProcessor(fpp);
hud = new BitmapText(guiFont, false);cam.setLocation(new Vector3f(100, 5, -100)); Quaternion camRotation = new Quaternion(); camRotation.fromAngleAxis(-FastMath.PI/2, new Vector3f(0, 1, 0)); cam.setRotation(camRotation); flyCam.setMoveSpeed(30); worldNode = new Node("WorldNode"); humanNode = new Node("HumanNode"); zombieNode = new Node("ZombieNode"); worldNode.attachChild(zombieNode); worldNode.attachChild(humanNode); rootNode.attachChild(worldNode); initMaterials(); initTerrain(); initCrosshairs(); initKeys(); Sound.setSounds(assetManager); Path.initPaths(assetManager, rootNode); Player.makePlayer(); Human.makeHuman(assetManager, humanNode, Path.path0, Path.time0); Human.makeHuman(assetManager, humanNode, Path.path1, Path.time1); Human.makeHuman(assetManager, humanNode, Path.path2, Path.time2); Human.makeHuman(assetManager, humanNode, Path.path3, Path.time3); Human.makeHuman(assetManager, humanNode, Path.path4, Path.time4); Human.makeHuman(assetManager, humanNode, Path.randomPath, Path.timeRandom); testHuman = assetManager.loadModel("Models/new_thin_zombie.j3o"); testHuman.setMaterial(zombieMaterial); testHuman.scale(.5f); testHuman.setLocalTranslation(0, 0, 0); humanNode.attachChild(testHuman); humanControl = testHuman.getControl(AnimControl.class); humanControl.addListener(this); humanChannel = humanControl.createChannel(); humanChannel.setAnim("walk", 0);}
@Override
public void simpleUpdate(float tpf) {
Player.playerUpdate(cam, assetManager, humanNode, zombieNode, rootNode);
listener.setLocation(cam.getLocation());
listener.setRotation(cam.getRotation());zombieMoan += tpf; System.out.print(zombieMoan); if(zombieMoan > 12.696969){ zombieMoan = 0; Sound.setSoundLocation(Sound.zombie, Player.playerControl.getPhysicsLocation()); Sound.playSound(Sound.zombie); } hud();}
private ActionListener actionListener = new ActionListener(){
public void onAction(String binding, boolean isPressed, float tpf){
if(binding.equals(“Left”) ){
Player.left = isPressed;
}
if(binding.equals(“Right”)){
Player.right = isPressed;
}
if(binding.equals(“Up”)){
Player.up = isPressed;
}
if(binding.equals(“Down”)){
Player.down = isPressed;
}
if(binding.equals(“Attack”)){
Player.attack = isPressed;
}
if(binding.equals(“Location”)){
Player.playerLocation = Player.playerControl.getPhysicsLocation();
System.out.println(" addWayPoint(new Vector3f("+Player.playerLocation.x+"f, 0, "+Player.playerLocation.z+“f));”);
}
}
};@Override
public void simpleRender(RenderManager rm) {
//TODO: add render code
}public void onAnimCycleDone(AnimControl control, AnimChannel channel, String animName){
if(animName.equals(“walk”)){
channel.setAnim(“walk”, .5f);
channel.setLoopMode(LoopMode.Loop);
channel.setSpeed(1f);
}
}public void onAnimChange(AnimControl control, AnimChannel channel, String animName){
}
public void initMaterials(){
zombieTexture = assetManager.loadTexture(“Materials/new_thin_zombie.png”);
zombieMaterial = new Material(assetManager, “Common/MatDefs/Misc/Unshaded.j3md”);
zombieMaterial.setTexture(“ColorMap”, zombieTexture);humanTexture = assetManager.loadTexture("Materials/new_thin_human.png"); humanMaterial = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md"); humanMaterial.setTexture("ColorMap", humanTexture);}
public void initTerrain(){
world = assetManager.loadModel(“Scenes/World.j3o”);
CollisionShape worldCollision = CollisionShapeFactory.createMeshShape((Node) world);
RigidBodyControl landscape = new RigidBodyControl(worldCollision, 0);
world.addControl(landscape);
worldNode.attachChild(world);
bulletAppState.getPhysicsSpace().add(landscape);waterProcessor = new SimpleWaterProcessor(assetManager); waterProcessor.setReflectionScene(worldNode); viewPort.addProcessor(waterProcessor); waterPlane = waterProcessor.createWaterGeometry(75, 75); waterPlane.setLocalTranslation(50, -3, 90); waterPlane.setMaterial(waterProcessor.getMaterial()); worldNode.attachChild(waterPlane);}
public void initKeys(){
inputManager.addMapping(“Left”, new KeyTrigger(KeyInput.KEY_A));
inputManager.addListener(actionListener, “Left”);inputManager.addMapping("Right", new KeyTrigger(KeyInput.KEY_D)); inputManager.addListener(actionListener, "Right"); inputManager.addMapping("Up", new KeyTrigger(KeyInput.KEY_W)); inputManager.addListener(actionListener, "Up"); inputManager.addMapping("Down", new KeyTrigger(KeyInput.KEY_S)); inputManager.addListener(actionListener, "Down"); inputManager.addMapping("Attack", new KeyTrigger(KeyInput.KEY_SPACE)); inputManager.addListener(actionListener, "Attack"); inputManager.addMapping("Location", new KeyTrigger(KeyInput.KEY_F)); inputManager.addListener(actionListener, "Location");}
public void initCrosshairs(){
setDisplayStatView(false);
guiFont = assetManager.loadFont(“Interface/Fonts/Default.fnt”);
BitmapText ch = new BitmapText(guiFont, false);
ch.setSize(guiFont.getCharSet().getRenderedSize()*2);
ch.setText("+");
ch.setLocalTranslation(settings.getWidth()/2 - ch.getLineWidth()/2, settings.getHeight()/2 + ch.getLineHeight()/2, 0);
guiNode.attachChild(ch);
}public void hud(){
guiFont = assetManager.loadFont(“Interface/Fonts/Default.fnt”);
hud.setSize(guiFont.getCharSet().getRenderedSize()*2);
hud.setText("Humans Remaining: "+humansLeft);
hud.setLocalTranslation(0, 750, 0);
guiNode.attachChild(hud);
}
}
[/java]