java - LibGDX，flappy bird 克隆，创建 BUTTON

Question

我正在开发一个 flappy bird clone，我真的被我想创建的这个按钮卡住了。对不起，我知道这是一个基本问题，但我是初学者，我真的需要你的帮助。所以，游戏差不多完成了，但我不想触摸整个屏幕让小鸟跳跃，我想制作一个按钮来做同样的事情。这是我的 InputHandler 类:

public class InputHandler implements InputProcessor {

private Bird myBird;
private GameWorld myWorld;

// Ask for a reference to the Bird when InputHandler is created.
public InputHandler(GameWorld myWorld) {
    // myBird now represents the gameWorld's bird.
   this.myWorld = myWorld;
   myBird = myWorld.getBird();
}

@Override
public boolean touchDown(int screenX, int screenY, int pointer, int button) {

    if (myWorld.isReady()) {
        myWorld.start();
    }

    myBird.onClick();

    if (myWorld.isGameOver() || myWorld.isHighScore()) {
        // Reset all variables, go to GameState.READ
        myWorld.restart();
    }
    return true;
}

@Override
public boolean keyDown(int keycode) {
    return false;
}

@Override
public boolean keyUp(int keycode) {
    return false;
}

@Override
public boolean keyTyped(char character) {
    return false;
}

@Override
public boolean touchUp(int screenX, int screenY, int pointer, int button) {
    return false;
}

@Override
public boolean touchDragged(int screenX, int screenY, int pointer) {
    return false;
}

@Override
public boolean mouseMoved(int screenX, int screenY) {
    return false;
}

@Override
public boolean scrolled(int amount) {
    return false;
}

}

我在 GameScreen 类中创建了一个舞台和一个 Actor (按钮)(它不工作)，它显示在屏幕上，但我不知道下一步该做什么。再次，对于这样一个基本的问题，我很抱歉，但我真的需要你的帮助来完成这个游戏。

public class GameScreen implements Screen {

private OrthographicCamera cam;
private int gameHeight;

Stage stage;
TextureAtlas buttonAtlas;
TextButtonStyle buttonStyle;
TextButton button;
Skin skin;
BitmapFont font;

SpriteBatch batch;

private GameWorld world;
private GameRenderer renderer;
private float runTime;


// This is the constructor, not the class declaration
public GameScreen() {

    float screenWidth = Gdx.graphics.getWidth();
    float screenHeight = Gdx.graphics.getHeight();
    float gameWidth = 544;
    float gameHeight = screenHeight / (screenWidth / gameWidth);

    world = new GameWorld();
    renderer = new GameRenderer(world, (int) gameHeight, (int) gameWidth);

    Gdx.input.setInputProcessor(new InputHandler(world));
}


@Override
public void render(float delta) {
    runTime += delta;
    world.update(delta);
    renderer.render(runTime);

    cam = new OrthographicCamera();
    cam.setToOrtho(false, 544, gameHeight);
    batch = new SpriteBatch();
    batch.setProjectionMatrix(cam.combined);

    stage.act();

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

@Override
public void resize(int width, int height) {
    System.out.println("GameScreen - resizing");
}

@Override
public void show() {
    System.out.println("GameScreen - show called");

    stage = new Stage (Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), true);

    font = new BitmapFont(Gdx.files.internal("data/font.fnt"), false);

    skin = new Skin();
    buttonAtlas = new TextureAtlas ("data/button.pack");
    skin.addRegions(buttonAtlas);

    buttonStyle = new TextButtonStyle();
    buttonStyle.up = skin.getDrawable("button");
    buttonStyle.over = skin.getDrawable("button - Copy");
    buttonStyle.down = skin.getDrawable("button - Copy");
    buttonStyle.font = font;

    button = new TextButton("" ,buttonStyle);
    stage.addActor(button);

}

@Override
public void hide() {
    System.out.println("GameScreen - hide called");
}

@Override
public void pause() {
    System.out.println("GameScreen - pause called");
}

@Override
public void resume() {
    System.out.println("GameScreen - resume called");
}

@Override
public void dispose() {
    // Leave blank
}

Answer 1

您几乎可以摆脱任何引用一般触摸输入的内容。完成后，您需要让按钮的 OnClick() 方法调用“反弹”小鸟的方法。如果您已为该函数提供了它自己的方法，它应该相对容易。

为了摆脱“为你做这件事”，我将向你展示一个 C# 示例:

boingButton_Click(Object sender, EventArgs e)
{
    bird.Bounce();
}

和这样的反弹方法:

Bounce()
{
    bird.Height += 4;
    bird.Descend();
}

这假设您有一种方法让鸟儿下降。按钮的优点是理想情况下您不需要对其方法进行任何重载，尽管我对 Java 的理解可能是错误的。