所以我使用libgdx库制作了一个2D游戏。最近，我一直在尝试使用box2dlights库将照明系统整合到游戏中。但是，出于某种原因，点光源不会出现在屏幕上。
这是我的代码：
private OrthographicCamera camera;
private SpriteBatch batch;
private ShapeRenderer sr;
private TextureAtlas textureAtlas;
private RayHandler rayHandler;
private World world;
private TiledMap map;
private OrthogonalTiledMapRenderer renderer;
private float animationTime = 0;
private Player player;
private int X = 400;
private int currentDirection = 0;
private int bulletDirection = 0;
private boolean animationPlaying = true;
private boolean animationPlaying2 = true;
public Animation walking;
public Animation walkingLeft;
public Animation walkingRight;
public Animation walkingUp;
private CollisionObjects CO;
private ArrayList<playerPositions> allPlayers = new ArrayList<playerPositions>();
//modes
ArrayList<BulletWorks> bullets = new ArrayList<BulletWorks>();
public boolean leftMode = false;
public boolean frontMode = true;
public boolean rightMode = false;
public boolean upMode = false;
public ArrayList<positions> pos = new ArrayList<positions>();
public float zoom = 0.1f;
public float xposCamera = 0f;
public float yposCamera = 0f;
boolean keyProcessed = true;
boolean play = false;
private float currentPosx = 400;
private float currentPosy = 400;
private PointLight pt;
public gameFirst(GameTrial game) {
TmxMapLoader loader = new TmxMapLoader();
map = loader.load("data/WhiteWater.tmx");
batch = new SpriteBatch();
renderer = new OrthogonalTiledMapRenderer(map);
sr = new ShapeRenderer();
camera = new OrthographicCamera();
world = new World(new Vector2(0, 0), true);
rayHandler = new RayHandler(world);
rayHandler.setCulling(true);
rayHandler.useDiffuseLight(true);
rayHandler.setAmbientLight(0.2f, 0.2f, 0.2f,1.0f);
player = new Player("prithvi2502", "currymonster69");
CO = new CollisionObjects();
allPlayers.add(CO.addPositionPlayers(player));
pt = new PointLight(rayHandler, 50, Color.CYAN, 40, 400, 300);
camera.zoom = .5f;
}
@Override
public void show() {
}
@Override
public void render(float delta) {
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
// Update
renderer.setView(camera);
rayHandler.update();
rayHandler.setCombinedMatrix(camera.combined.cpy().scl(100));
// Render
renderer.render();
batch.begin();
inputUpdate();
camera.update();
characterUpdate();
batch.end();
rayHandler.render();
}
public void characterUpdate() {
allPlayers = CO.updatePlayerPositions(player.getPlayerID(), player.getPlayerCurrentPosX(), player.getPlayerCurrentPosY(), allPlayers);
currentPosx = player.getPlayerCurrentPosX();
currentPosy = player.getPlayerCurrentPosY();
for(int i=0; i < allPlayers.size(); i++) {
System.out.println(allPlayers.get(i).getPlayerID() + " " + allPlayers.get(i).getX() + " " + allPlayers.get(i).getY());
currentPosx = allPlayers.get(i).getX();
currentPosy = allPlayers.get(i).getY();
}
for (int i = 0; i < bullets.size(); i++) {
if(bullets.get(i).getDirection() == 0) {
bullets.get(i).updateButtom();
if(bullets.get(i).didCollide(allPlayers) == true) {
System.out.println("HIT");
bullets.remove(i);
} else if(bullets.get(i).getY() > 0 && bullets.get(i).getY() < 1080) {
bullets.get(i).draw(batch);
}else {
bullets.remove(i);
}
} else if(bullets.get(i).getDirection() == 1) {
bullets.get(i).updateLeft();
if(bullets.get(i).didCollide(allPlayers) == true) {
System.out.println("HIT");
bullets.remove(i);
} else if(bullets.get(i).getX() > 0 && bullets.get(i).getX() < 1920) {
bullets.get(i).draw(batch);
} else {
bullets.remove(i);
}
} else if(bullets.get(i).getDirection() == 2) {
bullets.get(i).updateRight();
if(bullets.get(i).didCollide(allPlayers) == true) {
System.out.println("HIT");
bullets.remove(i);
} else if(bullets.get(i).getX() > 0 && bullets.get(i).getX() < 1920) {
bullets.get(i).draw(batch);
} else {
bullets.remove(i);
}
} else if(bullets.get(i).getDirection() == 3) {
bullets.get(i).updateTop();
if(bullets.get(i).didCollide(allPlayers) == true) {
System.out.println("HIT");
bullets.remove(i);
} else if(bullets.get(i).getY() > 0 && bullets.get(i).getY() < 1080) {
bullets.get(i).draw(batch);
} else {
bullets.remove(i);
}
}
}
}
public void inputUpdate() {
if(Gdx.input.isKeyPressed(Keys.A) ){
player.moveLeft(camera, batch);
currentDirection = 2;
}else if(Gdx.input.isKeyPressed(Keys.D) ){
player.moveRight(camera, batch);
currentDirection = 1;
}else if(Gdx.input.isKeyPressed(Keys.S) ){
player.moveDown(camera, batch);
currentDirection = 0;
}else if(Gdx.input.isKeyPressed(Keys.W) ){
player.moveUp(camera, batch);
currentDirection = 3;
}else if(Gdx.input.isKeyPressed(Keys.T) ){
BulletWorks BW = new BulletWorks((1920/2) + 300, 1080/2, (int) currentPosx, (int) currentPosy);
bulletDirection = 2;
BW.setDirection(bulletDirection);
bullets.add(BW);
}else if(Gdx.input.isKeyPressed(Keys.SPACE)){
BulletWorks BW = new BulletWorks(1920/2, 1080/2, (int) currentPosx, (int) currentPosy);
player.shoot(camera, batch);
if(currentDirection == 0){
bulletDirection = 0;
}else if(currentDirection == 1){
bulletDirection = 1;
}else if(currentDirection == 2){
bulletDirection = 2;
}else if(currentDirection == 3){
bulletDirection = 3;
}
BW.setDirection(bulletDirection);
bullets.add(BW);
}else{
if(player.frontMode){
setGameToNormal(player.getTexture());
}else if(player.rightMode){
setGameToNormal(player.getTexture3());
}else if(player.leftMode){
setGameToNormal(player.getTexture2());
}else if(player.upMode){
setGameToNormal(player.getTexture4());
}
play = false;
}
}
private void setGameToNormal(TextureRegion texture) {
batch.draw(texture, 1920/2, 1080/2);
}
@Override
public void resize(int width, int height) {
camera.setToOrtho(false, 1920, 1080);
}
@Override
public void hide() {
}
@Override
public void pause() {
}
@Override
public void resume() {
}
@Override
public void dispose() {
rayHandler.dispose();
world.dispose();
renderer.dispose();
map.dispose();
batch.dispose();
textureAtlas.dispose();
}
}
答案 0 :(得分：0)
我认为您尝试在每次libgdx刷新屏幕时创建的默认（黑色）背景上渲染灯光。黑色背景重量过重，灯光无法正常渲染。黑色＆＃39;燕子＆＃39;光明。
当我第一次尝试使用Box2D灯时，我遇到了同样的问题。我通过在整个屏幕上通过1x1像素纹理渲染彩色背景来解决它，然后再调用 rayHandler.render（）;
示例代码：
private SpriteBatch batch;
private World world;
private RayHandler rayHandler;
private Texture texture;
private OrthographicCamera camera;
@Override
public void show(){
batch = new SpriteBatch();
camera = new OrthographicCamera();
camera.setToOrtho(false, 50, 50/16*9);
camera.position.set(0, 0, 0);
camera.update();
world = new World(new Vector2(0, 0), true);
texture = new Texture("white.png"); // 1x1 pixel texture
rayHandler = new RayHandler(world);
new PointLight(rayHandler, 32, Color.CYAN, 20, 0, 0);
}
@Override
public void render(float delta){
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
world.step(delta, 8, 3);
batch.setProjectionMatrix(camera.combined);
batch.begin();
batch.draw(texture, -Gdx.graphics.getWidth()/2, -Gdx.graphics.getHeight()/2, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
batch.end();
rayHandler.setCombinedMatrix(camera.combined);
rayHandler.updateAndRender();
}
运行此代码，我得到以下result
我不太确定这是否是最好的方法，但它对我有用：）
答案 1 :(得分：0)
设置rayHandler.setAmbientLight（1）; 它默认设置为0可能是问题。它为我解决了同样的问题！