無法在LibGDX Camera.Update後繪製雪碧

Question

我是Libgdx Developement的新手，我正在開發一款類似於Candy Crush的遊戲。我有一個背景板，在該板上方有許多具有不同顏色的硬幣，用戶可以拖動和玩。除了一個問題之外，所有代碼都可以正常工作，其中我創建了一個邏輯，用戶可以實現多個點和級別，此時我想要顯示一個彈出窗口，說明Level Up + NumberOfLevel。我創建了一個背景圖片和字體的組合。但我無法畫出，因爲我在camera.update（）之後調用它。

這是我的整個邏輯代碼：具有延遲

private void initLevelLogic() { 

    if (baseLevel == 0) { 
     baseTime = 180; 
     basePoint = 400; 

     gameTime = baseTime; 

     progressBar = new ProgressBar(0, baseTime, 1, false, progressBarStyle); 
     progressBar.setValue(baseTime); 

     baseScoreToMinus = 0; 

     baseLevel++; 
    } else { 
     Log.d("Runnable", "RUNNABLE CALLED"); 

     initLevelUpAnimation(baseLevel); 

     Timer.schedule(new Task() { 
      @Override 
      public void run() { 
       baseTime -= 10; 

       basePoint = basePoint + (100 * baseLevel); 

       /** 
       * Game time will be used to calculate in render() method which is going to be in float. 
       */ 
       gameTime = baseTime; 

       progressBar = new ProgressBar(0, baseTime, 1, false, progressBarStyle); 
       progressBar.setValue(baseTime); 

       baseScoreToMinus = 0; 

       baseLevel++; 
       delayTime = 0; 


       stopGameObjects = false; 
      } 
     }, 5.0f); 
    } 
} 

private void initLevelUpAnimation(int level) { 
    levelUp = new Sprite(levelUpBG); 
    levelUp.setSize(250, 250); 
    levelUp.setPosition(gamePlayBG.getWidth()/2 - levelUp.getWidth()/2, 
      gamePlayBG.getHeight()/2 - levelUp.getHeight()/2); 

    stopGameObjects = true; 
} 

我使用了一個布爾值，stopGameObjects所以可以借鑑render（）方法精靈。

這裏是我的render（）方法的代碼：

public void render(float delta) { 
    Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT); 

    game.batch.begin(); 

    game.batch.setProjectionMatrix(camera2.combined); 

    game.batch.draw(gamePlayBG, 0, 0); 

    if (gameOver != true) { 
     //Log.d("render------------", "render: "+ delta); 

     progressBar.draw(game.batch, 1); 

     progressBar.setPosition(115, 700); 
     progressBar.setHeight(15); 
     progressBar.setWidth(270); 

     game.gameTopFonts.draw(game.batch, "Level " + baseLevel + " - ", 140, 750); 
     game.gameTopFonts.draw(game.batch, (basePoint - baseScoreToMinus) + " Points to Go", 225, 750); 

     if (score == 0) { 
      game.scoreFonts.draw(game.batch, score + "", 300, 810); 
     } else if (score < 100) { 
      game.scoreFonts.draw(game.batch, score + "", 280, 810); 
     } else if (score < 1000) { 
      game.scoreFonts.draw(game.batch, score + "", 260, 810); 
     } else { 
      game.scoreFonts.draw(game.batch, score + "", 245, 810); 
     } 
    } 

    //Writing this here will give output shown in the screenshot 
    if (stopGameObjects) { 
     levelUp.draw(game.batch); 

     game.levelUpFont.drawMultiLine(game.batch, "Level " + baseLevel + 1 + "\n" + "KEEP GOING", gamePlayBG.getWidth()/2, 
       gamePlayBG.getHeight()/2); 

    } 

    camera.update(); 

    game.batch.setProjectionMatrix(camera.combined); 

    if (lineHud.size > 1) { 
     for (Sprite sprite : this.lineHud) { 
      sprite.draw(game.batch); 
     } 
    } 

    for (int i = 0; i < gameObjects.size; i++) { 
     gameObjects.get(i).draw(game.batch); 
    } 

    for (Sprite sprite : this.scoreHud) { 
     sprite.draw(game.batch); 
    } 
} 

這段代碼在Render方法繪製彈出：

if (stopGameObjects) { 
    levelUp.draw(game.batch); 
    game.levelUpFont.drawMultiLine(game.batch, 
      "Level " + baseLevel + 1 + "\n" + "KEEP GOING", 
      gamePlayBG.getWidth()/2, 
      gamePlayBG.getHeight()/2); 
} 

如果我把上面的相機這個代碼。 update（）我得到輸出顯示在屏幕截圖中。彈出在硬幣後面。爲了顯示它上面的硬幣，我需要把它放在for循環繪製gameobject之後，但它不起作用。請給出你的建議，因爲我堅持了3天。

Answer 1

這是因爲你繪製比賽的其餘對文本的頂部。

要解決這個問題，您可以在繪製所有其他精靈之後將文本的繪圖向下移動。請記得再次致電setProjectionMatrix()。

if (stopGameObjects) { 
    game.batch.setProjectionMatrix(camera2.combined); 

    levelUp.draw(game.batch); 
    game.levelUpFont.drawMultiLine(game.batch, 
      "Level " + baseLevel + 1 + "\n" + "KEEP GOING", 
      gamePlayBG.getWidth()/2, 
      gamePlayBG.getHeight()/2); 
}