LibGDX - 如何让我的菜单画面切换到游戏画面？ [英] LibGDX - how do I make my menu screen switch to the Game screen?

问题描述

当我运行应用程序我的菜单屏幕显示，但是当我点击屏幕开始玩游戏的游戏开始玩，但在菜单画面依然是他们覆盖的游戏。我知道这是因为游戏有音乐播放。我还要添加一个启动画面，在未来，但我并不担心，自己目前。我在这个新的所以请最好解释的事情，你可以。下面是用来实现这一目标的3个班。

 公共类SlingshotSteve扩展游戏{

公共SpriteBatch批;
公共BitmapFont字体;

公共无效创建（）{
一批=新SpriteBatch（）;
//使用LibGDX默认的Arial字体。
字体=新BitmapFont（）;
this.setScreen（新菜单（本））;
}

公共无效渲染（）{
super.render（）; //重要！
}

公共无效的Dispose（）{
batch.dispose（）;
font.dispose（）;
}

}
 

下面是主菜单屏幕

 公共类菜单实现屏幕{

最后SlingshotSteve游戏;

OrthographicCamera摄像头;

公共菜单（最终SlingshotSteve GAM）{
游戏= GAM;

摄像头=新OrthographicCamera（）;
camera.setToOrtho（假的，800，480）;
}

@覆盖
公共无效渲染（浮动三角洲）{

Gdx.gl.glClearColor（0，0，0.2F，1）;
Gdx.gl.glClear（GL20.GL_COLOR_BUFFER_BIT）;

camera.update（）;
game.batch.setProjectionMatrix（camera.combined）;

game.batch.begin（）;
game.font.draw（game.batch，欢迎来到弹弓史蒂夫！，100，150）;
game.font.draw（game.batch，点击任何地方开始！，100，100）;
game.batch.end（）;

如果（Gdx.input.isTouched（））{
    game.setScreen（（屏幕）新GameScreen（游戏））;
    配置（）;
}
}
 

下面是游戏的画面

 公共类GameScreen实现屏幕{
最后SlingshotSteve游戏;

OrthographicCamera摄像头;
//创建我们的2D图像
SpriteBatch批;
TextureRegion backgroundTexture;
纹理质感;

GameScreen（最终SlingshotSteve GAM）{
    this.game = GAM;

摄像头=新OrthographicCamera（1280，720）;

一批=新SpriteBatch（）;

纹理纹理=新的纹理（Gdx.files.internal（background.jpg））;
backgroundTexture =新TextureRegion（纹理，0，0，500，500）;

音乐mp3Sound = Gdx.audio.newMusic（Gdx.files.internal（rain.mp3））;
mp3Sound.setLooping（真正的）;
mp3Sound.play（）;



}


公共无效渲染（）{

  Gdx.gl.glClear（GL20.GL_COLOR_BUFFER_BIT）;

  camera.update（）;
  batch.setProjectionMatrix（camera.combined）;

  batch.begin（）;
  batch.draw（backgroundTexture，0，0）;
  batch.end（）;

}

@覆盖
公共无效调整大小（INT宽度，高度INT）{

}

@覆盖
公共无效暂停（）{

}

@覆盖
公共无效简历（）{

}

@覆盖
公共无效的Dispose（）{
   batch.dispose（）;
   texture.dispose（）;

}
 

解决方案

不知道，但我觉得你的渲染（）的方法 GameScreen 不叫。你必须实现的方法渲染（浮动三角洲）的使用增量时间参数。

替换

 公共无效渲染（）{
    //你的code
}
 

与

 公共无效渲染（浮动三角洲）{
    //你的code
}
 

When I run the application my menu screen shows, but when I click the screen to begin playing the game the game begins playing but the menu screen is still their overlaying the game. I know this because the game has music playing. I'm also going to add a splash screen in the future but I'm not concerned about that right now. I'm new at this so please explain things as best as you can. Below are the 3 classes used to make this happen.

public class SlingshotSteve extends Game {

public SpriteBatch batch;
public BitmapFont font;

public void create() {
batch = new SpriteBatch();
//Use LibGDX's default Arial font.
font = new BitmapFont();
this.setScreen(new Menu(this));
}

public void render() {
super.render(); //important!
}

public void dispose() {
batch.dispose();
font.dispose();
}

}

Here is the main menu screen

public class Menu implements Screen {

final SlingshotSteve game;

OrthographicCamera camera;

public Menu(final SlingshotSteve gam) {
game = gam;

camera = new OrthographicCamera();
camera.setToOrtho(false, 800, 480);
}

@Override
public void render(float delta) {

Gdx.gl.glClearColor(0, 0, 0.2f, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

camera.update();
game.batch.setProjectionMatrix(camera.combined);

game.batch.begin();
game.font.draw(game.batch, "Welcome to Slingshot Steve!!! ", 100, 150);
game.font.draw(game.batch, "Tap anywhere to begin!", 100, 100);
game.batch.end();

if (Gdx.input.isTouched()) {
    game.setScreen((Screen) new GameScreen(game));
    dispose();
}
}

Here is the game screen

public class GameScreen implements Screen {
final SlingshotSteve game;   

OrthographicCamera camera;
// Creates our 2D images
SpriteBatch batch;
TextureRegion backgroundTexture;
Texture texture;

GameScreen(final SlingshotSteve gam) {
    this.game = gam; 

camera = new OrthographicCamera(1280, 720);

batch = new SpriteBatch();

Texture texture = new Texture(Gdx.files.internal("background.jpg"));
backgroundTexture = new TextureRegion(texture, 0, 0, 500, 500);

Music mp3Sound = Gdx.audio.newMusic(Gdx.files.internal("rain.mp3"));
mp3Sound.setLooping(true);
mp3Sound.play();



}


public void render() {  

  Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

  camera.update();
  batch.setProjectionMatrix(camera.combined);

  batch.begin();
  batch.draw(backgroundTexture, 0, 0); 
  batch.end();

}

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

}

@Override
public void pause() {

}

@Override
public void resume() {

}

@Override
public void dispose() {
   batch.dispose();
   texture.dispose();

}

解决方案

Not sure but I think your render() method on GameScreen not called. you must implement method render(float delta) that use delta time for parameter.

replace

public void render() {
    // your code
}

with

public void render(float delta) {
    // your code
}

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