刪除「項目」時，它拾起/當我站在它

Question

我有這個ArrayList，我用來生成2類型的劍有1到5級。當我「拾起它」時，我希望它永遠消失。我如何處置那把劍？

此代碼分配和生成劍（S）渲染器類：

private List<Sword> swords = new ArrayList<Sword>(); 
Then in public Renderer() method I do: 

for (int i = 0; i<10 ; i++) { 
      swords.add(new Sword()); 
     } 

當我站在它：

if(sword.myLevel<3){ 
       sword.pickMe(); 
      } 

在render()它們顯示在屏幕上：

for (Sword sword : swords) { 
    sword.createMe(); 
} 

這是我的劍類：

public class Sword { 
    private TextureRegion sprite; 
    public Vector2 position; 
    private int x, y; 
    private int size; 
    private Random r; 
    private boolean pickme = false; 
    public int myLevel; 
    public Sword() { 
     position = new Vector2(x, y); 
     r = new Random(); 
     position.x = (r.nextInt(15))*GameRender.tilesize; 
     position.y = (r.nextInt(15))*GameRender.tilesize; 
     size = GameRender.tilesize; 
     myLevel = r.nextInt(4); 
     sprite =getSprite(); 
     System.out.println(myLevel); 
    } 
    private TextureRegion getSprite() { 
     if(myLevel<3){ 
      sprite=AssetLoader.s1; 
     }else sprite=AssetLoader.s2; 
     return sprite; 
    } 
    public void pickMe(){ 
     //GameRender.batch.draw(sprite, 10, 10, size, size); 
     pickme = true; 
    } 
    public void createMeShape(){ 
     //GameRender.shapeRenderer.rect(position.x, position.y, size, size); 
    } 
    public void createMe() { 
     //draws it 
     GameRender.batch.draw(sprite, position.x, position.y, size, size); 
     if(pickme){ 
      //draws that im standing on it 
      GameRender.batch.draw(sprite, GameRender.playerx, GameRender.playery-10, size, size); 
     } 
     pickme=false; 
    } 
    public static void Update() { 

    } 
} 

忽略在createMe()整個（if pickMe()）如何刪除這個特定的劍時，我就可以了？

Answer 1

如果你想在拾取它之後永久刪除劍，你必須從劍的ArrayList中移除它。

if (sword.myLevel<3){ 
    sword.pickMe(); 
    swords.remove(sword); 
}