Question

我有一个名为tile的Actor，我想将其添加到一个表格中以制作类似棋盘格的东西。我可以让瓷砖绘制，但batch.draw总是要求一个位置。如果我设置位置，则不会像我想要的那样在行的末尾绘制图块。例如，

             batch.draw(texture, 0, 0);

会画：

enter image description here

正如你所看到的，我有一个带按钮的桌子，它们正确排列在行上，因为它们不是按位置绘制的。有没有办法让我的瓷砖以同样的方式绘制？

这是我的代码：

Tile.java

public class Tile extends Actor {

boolean filled;
int row;
int column;
Texture texture;

public Tile(int row, int column){
    this.row = row;
    this.column = column;
    texture = new Texture(Gdx.files.internal("assets/game/tile.png"));

    this.addListener(new InputListener() {
        public boolean touchDown (InputEvent event, float x, float y, int pointer, int button) {
            System.out.println("down");
            return true;
        }

        public void touchUp (InputEvent event, float x, float y, int pointer, int button) {
            System.out.println("up");
        }
    });
}


@Override
 public void draw (SpriteBatch batch, float parentAlpha) {
        //batch.setColor(0.5f, 0.5f, 0.5f,  1);
         batch.draw(texture, 0, 0);
}

public int getRow(){
    return row;
}

public int getColumn(){
    return column;
}

}

MainScreen.java

public class MainScreen implements Screen {

MyGame myGame;
private final Stage stage;
private final SpriteBatch spriteBatch;
Table table;
private TextureAtlas buttonsUi;
Boolean nextScreen= false;


public MainScreen(MyGame myGame) {
    spriteBatch = new SpriteBatch();
    stage = new Stage(Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), false, spriteBatch);
    this.myGame = myGame;

     Gdx.input.setInputProcessor(stage);


    //Create the text label 
    Skin pennySkin = new Skin(Gdx.files.internal("uiskin.json"));
    Label pennyLabel = new Label("PennyPop", pennySkin);

    //Create the sfx and api button button
    ImageButton sfxButton = createSfxButton();
    ImageButton apiButton = createApiButton();
    ImageButton gameButton = createGameButton();


     table = new Table();
     table.add(sfxButton);
     table.add(apiButton).padLeft(10);
     table.add(gameButton).padLeft(10);
     table.add(new Tile(0,0)).padLeft(10); //Tile added here to the row
     table.debug();


     //VericalGroup the buttons and the label
     VerticalGroup vGroup = new VerticalGroup();
     vGroup.addActor(pennyLabel);
     vGroup.addActor(table);

     //Put in another group to align correctly with api widget
    Table rootTable = new Table();
    rootTable.setName("root table");
    rootTable.setFillParent(true);
    rootTable.add(vGroup);
    rootTable.debug();




   //  stage.addActor(pennyLabel);
     stage.addActor(rootTable);
}

@Override
public void dispose() {
    spriteBatch.dispose();
    stage.dispose();
}

@Override
public void render(float delta) {

     Gdx.gl.glClearColor(1, 1, 1, 1);
        Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);

    stage.act(delta);
    stage.draw();
    Table.drawDebug(stage);

    if(nextScreen){
        myGame.setScreen(new GameScreen(myGame));
        dispose();
    }
}

@Override
public void resize(int width, int height) {
    stage.setViewport(width, height, false);
}

@Override
public void hide() {
    Gdx.input.setInputProcessor(null);
}

@Override
public void show() {
    Gdx.input.setInputProcessor(stage);
}

@Override
public void pause() {
    // Irrelevant on desktop, ignore this
}

@Override
public void resume() {
    // Irrelevant on desktop, ignore this
}

Answer 1

你的Tile Actor必须设置自己的大小，以便Table知道如何放置它。由于它是Actor的子类，因此它已经有可供您填写的大小字段（不要创建自己的height和width变量，这会隐藏正确的变量。）

texture = new Texture(Gdx.files.internal("assets/game/tile.png"));
width = texture.getWidth();
height = texture.getHeight();

然后绘制它，使用x和y字段（也是Actor超类的一部分）。表格将为您设置x和y值，因此您只需要这样做。

@Override
public void draw (SpriteBatch batch, float parentAlpha) {
    batch.setColor(1, 1, 1, parentAlpha);
    batch.draw(texture, x, y);
}

请注意，您必须始终设置颜色，即使它是白色的，因为它总是可能将批次的颜色保留为刚刚绘制的其他东西的非白色。

Libgdx-在表格行中定位演员

1 个答案: