java - libgdx 我的启动画面没有显示

Question

我正在编写一个 libgdx 游戏，但似乎我无法显示我的启动画面，它只显示黑屏。有谁知道这是怎么来的？

我没有收到任何运行时错误，它只显示黑屏，即使我将 glClearColor 设置为其他颜色然后黑色

package mygame;



import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Screen;
import com.badlogic.gdx.graphics.GL10;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.Texture.TextureFilter;
import com.badlogic.gdx.graphics.g2d.Sprite;  
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

 public class SplashScreen implements Screen {

Texture splashTexture;
Sprite splashSprite;
SpriteBatch batch;
MyGame game;

public SplashScreen(MyGame game) {
    this.game = game;
}

@Override
public void render(float delta) {
    Gdx.gl.glClearColor(0, 0, 0, 1);
    Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);

    batch.begin();
    splashSprite.draw(batch);
    batch.end();
}

@Override
public void resize(int width, int height) {

}

@Override
public void show() {
    splashTexture = new Texture("mygame/splash.png");
    splashTexture.setFilter(TextureFilter.Linear, TextureFilter.Linear);

    splashSprite = new Sprite(splashTexture);
    //splashSprite.setColor(1, 1, 1, 0);
    splashSprite.setX(Gdx.graphics.getWidth() / 2 - (splashSprite.getWidth() / 2));
    splashSprite.setY(Gdx.graphics.getHeight() / 2 - (splashSprite.getHeight() / 2));

    batch = new SpriteBatch();
}

@Override
public void hide() {

}

@Override
public void pause() {

}

@Override
public void resume() {

}

@Override
public void dispose() {

}

}

Answer 1

我尝试了您的代码(见下文)，它运行得很好，所以问题可能出在 MyGame 类中。例如，您是否重写了 Game.render()，然后不调用 super.render()？

package hacks;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Screen;
import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
import com.badlogic.gdx.graphics.GL10;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.Texture.TextureFilter;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class MyGame extends com.badlogic.gdx.Game {

    @Override
    public void create() {
        setScreen(new SplashScreen(this));
    }

    public static void main(String[] args) {
        LwjglApplicationConfiguration config = new LwjglApplicationConfiguration();

        config.title = MyGame.class.getName();
        config.width = 800;
        config.height = 480;
        config.fullscreen = false;
        config.useGL20 = true;
        config.useCPUSynch = true;
        config.forceExit = true;
        config.vSyncEnabled = true;

        new LwjglApplication(new MyGame(), config);
    }
}

class SplashScreen implements Screen {

    Texture splashTexture;
    Sprite splashSprite;
    SpriteBatch batch;
    MyGame game;

    public SplashScreen(MyGame game) {
        this.game = game;
    }

    @Override
    public void render(float delta) {
        Gdx.gl.glClearColor(0, 0, 0, 1);
        Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);

        batch.begin();
        splashSprite.draw(batch);
        batch.end();
    }

    @Override
    public void resize(int width, int height) {
    }

    @Override
    public void show() {
        splashTexture = new Texture("assets/data/libgdx.png");
        splashTexture.setFilter(TextureFilter.Linear, TextureFilter.Linear);

        splashSprite = new Sprite(splashTexture);
        // splashSprite.setColor(1, 1, 1, 0);
        splashSprite.setX(Gdx.graphics.getWidth() / 2 - (splashSprite.getWidth() / 2));
        splashSprite.setY(Gdx.graphics.getHeight() / 2 - (splashSprite.getHeight() / 2));

        batch = new SpriteBatch();
    }

    @Override
    public void hide() {

    }

    @Override
    public void pause() {

    }

    @Override
    public void resume() {

    }

    @Override
    public void dispose() {
    }
}