Java游戏应用程序在Eclipse中工作，但不是作为.jar（Slick2D+；LWJGL）
今天，我打算把我的游戏打包到一个罐子里，提供给一个朋友，他编写了代码，希望看到我成功创建的一个很好的小故障。当我把它变成一个可运行的jar时，它会在命令提示符中加载，但会抛出Resource Not Found errors for Sounds（.ogg），这很好，因为它们不会在设置为的调试模式中使用。然后它在initTileMap（）行的TileHanlder.class中抛出了一个NullPointerException 我不知所措，所以我来到StackOverflow，因为我几乎花了一整天的时间来买一个工作罐。我也试过了 我的主要问题是，您是否注意到了任何异常，或者我没有做的事情导致在.jar中找不到资源 所有代码和资源都在同一个JAR中，一个JAR代表所有内容，而不是多个JAR 对于我所有的代码（毕竟它是开源的：） java（调用AssetHandler和TileHandler的类） java（游戏处理程序TileHandler.java） 如果您需要任何其他资源或信息，请让我知道，我将很乐意提供，以便我可以克服这一点。我也会想其他的办法，谢谢大家的回复Java游戏应用程序在Eclipse中工作，但不是作为.jar（Slick2D+；LWJGL）,jar,resources,lwjgl,slick2d,Jar,Resources,Lwjgl,Slick2d,今天，我打算把我的游戏打包到一个罐子里，提供给一个朋友，他编写了代码，希望看到我成功创建的一个很好的小故障。当我把它变成一个可运行的jar时，它会在命令提示符中加载，但会抛出Resource Not Found errors for Sounds（.ogg），这很好，因为它们不会在设置为的调试模式中使用。然后它在initTileMap（）行的TileHanlder.class中抛出了一个NullPointerException 我不知所措，所以我来到StackOverflow，因为我几乎花了一整
由于问题文本框上的字符数限制为30k，因此内容被删除。主要是在极其拥挤的AssetHandler.java中，它仍然存在于git存储库中。我也遇到了同样的问题。在寻找了一段时间后，我发现了这个简洁的解决方案。看 请记住，在同一目录中需要一个lib文件夹。我把我的放在了.jar的外面，但也可以放在里面。还要注意的是，它需要在执行任何LWJGL操作之前发生，因此主方法是一个好地方
public class Level extends BasicGameState {
public MapHandler map = new MapHandler();
public AssetHandler asset = new AssetHandler();
static OutputHandler out = new OutputHandler();
public GameContainer container;
public StateBasedGame game;
public static float MouseX = 0;
public static float MouseY = 0;
public float RectX = 0;
public float RectY = 0;
public int tileAmount = 0;
public static int mapID = 1;
public static int delta;
public static int score = 0;
private static int EntityAmount = 0;
private static int ActiveEntityAmount = 0;
private int FPS = 0;
public static Image mapImage;
public static TileHandler Tile = new TileHandler();
public Point mousePoint;
public Circle mouseCirc;
public static Player p;
public static Enemy Blinky, Pinky, Inky, Clyde;
public static EntityAI AGGRESSIVE, AMBUSH, HIT_RUN, SORTOFRANDOM;
public Level(int id) {
}
@Override
public void init(GameContainer container, StateBasedGame game) throws SlickException {
MapHandler.mapRect();
mapID = MapHandler.getMapID();
MapHandler.deployMap(mapID);
try {
asset.initAssets();
OutputHandler.initFont();
} catch (AssetException e) {
e.printStackTrace();
}
TileHandler.initTileMap();
container.setUpdateOnlyWhenVisible(true);
container.setShowFPS(false);
container.setSmoothDeltas(false);
container.setVerbose(true);
this.container = container;
this.game = game;
AGGRESSIVE = new RedAI();
AMBUSH = new PinkAI();
HIT_RUN = new BlueAI();
SORTOFRANDOM = new OrangeAI();
p = new Player("Player1");
Blinky = new Enemy("Shadow", AGGRESSIVE);
Pinky = new Enemy("Speedy", AMBUSH);
Inky = new Enemy("Bashful", HIT_RUN);
Clyde = new Enemy("Pokey", SORTOFRANDOM);
}
@Override
public void render(GameContainer container, StateBasedGame game, Graphics g) throws SlickException {
Tile.drawTileMap(TileHandler.tileLayer, TileHandler.tMapTiles, g);
if (Reference.debug) {
displayTileBounds(TileHandler.tileLayer, g);
}
drawEntities();
drawStrings(g);
}
@Override
public void update(GameContainer container, StateBasedGame game, int delta) throws SlickException {
Input in = container.getInput();
MouseX = in.getMouseX();
MouseY = in.getMouseY();
RectX = MapHandler.Map32.getX();
RectY = MapHandler.Map32.getY();
EntityAmount = Entity.entityList.size();
ActiveEntityAmount = Enemy.enemyList.size() + Projectile.activeProjectiles.size() + 1;
Level.delta = delta;
Reference.defProjectileVelocity = .13f * Level.delta;
p.update(in);
updateNonPlayerEntities();
FPS = container.getFPS();
}
@Override
public int getID() {
return 2;
}
/** @deprecated **/
@Deprecated
protected void drawMap(Graphics g) {
g.drawImage(mapImage, Reference.MAP_X, Reference.MAP_Y);
}
protected void drawStrings(Graphics g) {
if (Reference.debug) {
OutputHandler.write("FPS: " + Integer.toString(FPS), 11, 10);
OutputHandler.write(String.format("Mouse X: %s, Mouse Y: %s", MouseX, MouseY), 11, 30);
OutputHandler.write(String.format("Rect X: %s, Y: %s", RectX, RectY), 11, 50);
OutputHandler.write("Amount of Tiles: " + (TileHandler.tileLayer.length * TileHandler.tileLayer[0].length), 11, 70);
OutputHandler.write(String.format("Amount of Entities = %s", Integer.toString(EntityAmount)), 11, 90);
OutputHandler.write(String.format("Active Entities = %s", Integer.toString(ActiveEntityAmount)), 11, 110);
out.write("Currently Loaded: " + p.isReloaded(), 11, 130);
OutputHandler.write("Amount of Entities is Accumulative", 11, 666);
} else {
String curTime = Reference.getTime();
String scoreStr = Reference.convertScore(score);
OutputHandler.write("Time: " + curTime, 11, 10);
OutputHandler.write("Score: " + scoreStr, 550, 10);
}
}
protected void displayTileBounds(Rectangle[][] tileLayer, Graphics g) {
g.setColor(Color.white);
for (int x = 0; x < tileLayer.length; x++) {
for (int y = 0; y < tileLayer[0].length; y++) {
g.fill(tileLayer[x][y]);
}
}
g.setColor(Color.magenta);
for (int s = 0; s < TileHandler.collisionTiles.size(); s++) {
Rectangle r = TileHandler.collisionTiles.get(s);
g.fill(r);
}
g.setColor(Color.orange);
g.fill(p.boundingBox);
for (int z = 0; z < Entity.teleportingTiles.length; z++) {
Rectangle r = Entity.teleportingTiles[z];
g.fill(r);
}
}
protected void drawEntities() {
ArrayList<Entity> list = Entity.entityList;
for (int i = 0; i < list.size(); i++) {
list.get(i).drawEntity(list.get(i));
}
}
protected void updateNonPlayerEntities() {
ArrayList<Enemy> list = Enemy.enemyList;
for (int i = 0; i < list.size(); i++) {
list.get(i).update();
}
ArrayList<Projectile> pList = Projectile.activeProjectiles;
for (int p = 0; p < pList.size(); p++) {
pList.get(p).update();
}
}
}
public class AssetHandler {
public static boolean isComplete = false;
private static String musPath = "res/Sounds/";
static TileHandler tile;
private static int tsize = 32;
private static String spritesPath = "res/GameSprites/Maze Game/sprites.png";
private static String terrainPath = "res/GameSprites/Maze Game/terrain.png";
private static String twPath = "res/GameSprites/Maze Game/animation/tankToWest.png";
private static String tePath = "res/GameSprites/Maze Game/animation/tankToEast.png";
private static String tnPath = "res/GameSprites/Maze Game/animation/tankToNorth.png";
private static String tsPath = "res/GameSprites/Maze Game/animation/tankToSouth.png";
private static String bwPath = "res/GameSprites/Maze Game/animation/blueToWest.png";
private static String bePath = "res/GameSprites/Maze Game/animation/blueToEast.png";
private static String bnPath = "res/GameSprites/Maze Game/animation/blueToNorth.png";
private static String bsPath = "res/GameSprites/Maze Game/animation/blueToSouth.png";
private static String rePath, rwPath, rsPath, rnPath;
private static String pePath, pwPath, psPath, pnPath;
private static String oePath, owPath, osPath, onPath;
public static Music titleMus1, titleMus2, titleMus3, loadingScreenMus1, loadingScreenMus2, loadingScreenMus3;
public static Sound tankMove, tankFire, tankExplode, tankSurrender, tankRetreat;
public static void initSounds() {
System.out.println("Initializing Main Menu Music...");
try {
titleMus1 = new Music(musPath + "title/titlefirst.ogg");
titleMus2 = new Music(musPath + "title/titlesecond.ogg");
titleMus3 = new Music(musPath + "title/titlethird.ogg");
System.out.println("Initialized Main Menu Music!...");
} catch (SlickException e) {
e.printStackTrace();
System.out.println("ERROR: Initializing Main Menu Sounds at " + "com.treehouseelite.tank.game.handlers.AssetHandler" + " : initSounds() Method, First Try/Catch");
}
System.out.println("Initializing Loading Screen Music...");
try {
loadingScreenMus1 = new Music(musPath + "levels or loading screens/ActionBuilder.ogg");
loadingScreenMus2 = new Music(musPath + "levels or loading screens/StruggleforSurvival.ogg");
loadingScreenMus3 = new Music(musPath + "levels or loading screens/SurrealSomber.ogg");
} catch (SlickException e) {
e.printStackTrace();
System.out.println("ERROR: Initializing Loading Screen Sounds at " + "com.treehouseelite.tank.game.handlers.AssetHandler" + " : initSounds() Method, Second Try/Catch");
}
initSFX();
initsComplete();
}
private static void initsComplete() {
System.out.println("========================ALL ASSETS INITIALIZED========================");
}
public static void initSFX() {
try {
tankMove = new Sound("res/Sounds/SFX/tankMove.wav");
} catch (SlickException e) {
e.printStackTrace();
} finally {
System.out.println("All Sound Effects Initialized...");
}
}
}
public class TileHandler {
public static String mapPath = "res/World/level_";
public static int bg, paths, collision;
public static Image[][] tMapTiles = new Image[25][20];
public static boolean[][] collidableTile = new boolean[25][20];
static Graphics g = new Graphics();
static AssetHandler asset = new AssetHandler();
// The Amount of Image is too damn high!
static TiledMap tMap;
public static int wFrame = 0;
private static int id;
public static Rectangle[][] tileLayer = new Rectangle[25][20];
public static ArrayList<Rectangle> collisionTiles = new ArrayList<Rectangle>(500);
public TileHandler() {
}
public TileHandler(int id, Rectangle rect) {
TileHandler.id = id;
try {
createTiles(id, rect);
} catch (SlickException e) {
e.printStackTrace();
}
}
protected void createTiles(int id, Rectangle layer) throws SlickException {
// Scans 0,0 to 0,20 of the tiles and then moves down the x line
// gettings tiles
// 0,0 = tileLayer[0][0]
mapPath = String.format("res/World/level_%s.tmx", id);
tMap = new TiledMap(mapPath);
bg = tMap.getLayerIndex("background");
paths = tMap.getLayerIndex("paths");
collision = tMap.getLayerIndex("collision");
// Constructs a Grid of Rectangles based on the Map's Top Left point
for (int i = 0; i < tileLayer.length; i++) {
for (int y = 0; y < tileLayer[0].length; y++) {
Rectangle tile = new Rectangle((i + Reference.MAP_X) + (i * Reference.TILE_SIZE), (y + Reference.MAP_Y) + (y * Reference.TILE_SIZE), 32, 32);
tileLayer[i][y] = tile;
}
}
/*
* for(int x = 0; x<collisionTiles.length; x++){ for(int y = 0;
* y<collisionTiles[0].length; y++){ Rectangle tile = new
* Rectangle((x+Reference.MAP_X) + (x*31),
* (y+Reference.MAP_Y+14)+(y*31),32,32); collisionTiles[x][y] = tile; }
* }
*/
}
/** @deprecated */
@Deprecated
public static void initSprites(Rectangle[][] layer) {
bg = tMap.getLayerIndex("background");
paths = tMap.getLayerIndex("paths");
collision = tMap.getLayerIndex("collision");
System.out.println("Initialized Sprites!");
}
// Initializes all tiles and put them into Image and Boolean Arrays
// Boolean Array for later use with determining whether the player or entity
// can be there. (collidableTile)
// Image array holds the tiles (tMapTiles)
public static void initTileMap() {
new Graphics();
// Getting Tiles based off Tile ID's
/** DIRT PATH MAPS (Dev Map, Level 1) **/
if ((id == 0) || (id == 1)) {
for (int x = 0; x < tileLayer.length; x++) {
for (int y = 0; y < tileLayer[0].length; y++) {
Rectangle r = new Rectangle(tileLayer[x][y].getX(), tileLayer[x][y].getY(), 32, 32);
if (tMap.getTileId(x, y, bg) == 1) {
tMapTiles[x][y] = AssetHandler.sparseGrass;
}
if (tMap.getTileId(x, y, collision) == 2) {
tMapTiles[x][y] = AssetHandler.water11;
collisionTiles.add(r);
}
if (tMap.getTileId(x, y, collision) == 57) {
tMapTiles[x][y] = AssetHandler.concrete1;
collisionTiles.add(r);
}
if (tMap.getTileId(x, y, collision) == 71) {
tMapTiles[x][y] = AssetHandler.concrete2;
// collisionTiles.add(new
// Rectangle(tileLayer[x][y].getX(),
// tileLayer[x][y].getY()+14, 32, 32)) ;
collisionTiles.add(r);
}
if (tMap.getTileId(x, y, collision) == 85) {
tMapTiles[x][y] = AssetHandler.concrete3;
collisionTiles.add(r);
}
if (tMap.getTileId(x, y, collision) == 72) {
tMapTiles[x][y] = AssetHandler.metal1;
collisionTiles.add(r);
}
if (tMap.getTileId(x, y, collision) == 58) {
tMapTiles[x][y] = AssetHandler.metal2;
collisionTiles.add(r);
}
if (tMap.getTileId(x, y, paths) == 50) {
tMapTiles[x][y] = AssetHandler.hDirtPath;
}
if (tMap.getTileId(x, y, paths) == 60) {
tMapTiles[x][y] = AssetHandler.dirtPath;
}
if (tMap.getTileId(x, y, paths) == 59) {
tMapTiles[x][y] = AssetHandler.dirtPathTurn4;
}
if (tMap.getTileId(x, y, paths) == 73) {
tMapTiles[x][y] = AssetHandler.dirtPathTurn3;
}
if (tMap.getTileId(x, y, paths) == 79) {
tMapTiles[x][y] = AssetHandler.dirtThreewayRight;
}
if (tMap.getTileId(x, y, paths) == 46) {
tMapTiles[x][y] = AssetHandler.dirtPathTurn1;
}
if (tMap.getTileId(x, y, paths) == 37) {
tMapTiles[x][y] = AssetHandler.hDirtCrossing1;
}
if ((tMap.getTileId(x, y, paths) == 80) || (tMap.getTileId(x, y, paths) == 88)) {
tMapTiles[x][y] = AssetHandler.dirtThreewayLeft;
}
if (tMap.getTileId(x, y, paths) == 102) {
tMapTiles[x][y] = AssetHandler.dirtThreewayDown;
}
if (tMap.getTileId(x, y, paths) == 74) {
tMapTiles[x][y] = AssetHandler.dirtPathTurn2;
}
if (tMap.getTileId(x, y, paths) == 107) {
tMapTiles[x][y] = AssetHandler.dirtThreewayUp;
}
if (tMap.getTileId(x, y, paths) == 88) {
tMapTiles[x][y] = AssetHandler.dirtCrossroads;
}
}
}
}
}
public void drawTileMap(Rectangle[][] layer, Image[][] tiles, Graphics g) {
// Loops through the Image array and places tile based on the Top Left
// corner of the Rectangle in the rectangle array
// Rectangle Array = layer (tileLayer was passed)
// Image Array = tiles (tMapTiles was passed)
// Asset Refers to Asset Handler
for (int x = 0; x < layer.length; x++) {
for (int y = 0; y < layer[0].length; y++) {
g.drawImage(tiles[x][y], layer[x][y].getX(), layer[x][y].getY());
// Below here is image detection for the placement of Animations
if (tiles[x][y] == AssetHandler.water11) {
AssetHandler.vRiver1.draw(layer[x][y].getX(), layer[x][y].getY());
AssetHandler.vRiver1.start();
AssetHandler.vRiver1.update(Level.delta);
} else if (tiles[x][y] == AssetHandler.hDirtCrossing1) {
AssetHandler.hDirtCrossing.draw(layer[x][y].getX(), layer[x][y].getY());
AssetHandler.hDirtCrossing.start();
AssetHandler.hDirtCrossing.update(Level.delta);
}
}
}
}
}
public class MapHandler {
public static AssetHandler asset = new AssetHandler();
static Image devMap;
Image map_1;
Image map_2;
Image map_3;
public static Rectangle Map32;
public MapHandler() {
}
// Sends a Rectangle set Around the Map Image to TileHandler
// to construct a grid of 32x32 Rectangles inside the Map's Rectangle
public static void deployMap(int id) {
if (id == 0) {
new TileHandler(id, Map32);
}
}
// Randomly Generates a Map ID corresponding to a Level_X.tmx
// Currently set to 0 for development purposes
public static int getMapID() {
new Random();
return 0;
// return id;
}
/* Create the Rectangle and Grid */
public static void mapRect() throws SlickException {
System.out.println("Initializing Rectangular Plane...");
Map32 = new Rectangle(Reference.GUI_WIDTH / 24, Reference.GUI_HEIGHT / 24, 800, 640);
System.out.println("Map32 Initialized!...");
}
}
public static void main(String[] args) throws SlickException {
/* Set lwjgl library path so that LWJGL finds the natives depending on the OS. */
String osName = System.getProperty("os.name");
// Get .jar dir. new File(".") and property "user.dir" will not work if .jar is called from
// a different directory, e.g. java -jar /someOtherDirectory/myApp.jar
String nativeDir = "";
try {
nativeDir = new File(GameMain.class.getProtectionDomain().getCodeSource().getLocation().toURI()).getParent();
} catch (URISyntaxException uriEx) {
try {
// Try to resort to current dir. May still fail later due to bad start dir.
uriEx.printStackTrace();
nativeDir = new File(".").getCanonicalPath();
} catch (IOException ioEx) {
// Completely failed
ioEx.printStackTrace();
JOptionPane.showMessageDialog(new JFrame(), "Failed to locate native library directory. " +
"Error:\n" + ioEx.toString(), "Error", JOptionPane.ERROR_MESSAGE);
System.exit(-1);
}
}
// Append library subdir
nativeDir += File.separator + "lib" + File.separator + "native" + File.separator;
if (osName.startsWith("Windows")) {
nativeDir += "windows";
} else if (osName.startsWith("Linux") || osName.startsWith("FreeBSD")) {
nativeDir += "linux";
} else if (osName.startsWith("Mac OS X")) {
nativeDir += "macosx";
} else if (osName.startsWith("Solaris") || osName.startsWith("SunOS")) {
nativeDir += "solaris";
} else {
JOptionPane.showMessageDialog(new JFrame(), "Unsupported OS: " + osName + ". Exiting.",
"Error", JOptionPane.ERROR_MESSAGE);
System.exit(-1);
}
System.setProperty("org.lwjgl.librarypath", nativeDir);
}