[英]Create an Array which contains a RECTANGLE and an INTEGER
private Array<Rectangle> livinglamas;
我希望此数组为每个矩形包含一个整数。 应该在spawnLama()中指定此整数,以便每个Rectangle都包含其自己的值。 我该怎么做呢?
private void spawnLama() {
Rectangle livinglama = new Rectangle();
livinglama.x = MathUtils.random(-800, -400 - 64);
livinglama.y = 0;
livinglama.width = 64;
livinglama.height = 64;
livinglamas.add(livinglama);
lastLamaTime = TimeUtils.nanoTime();
}
和
@Override
public void render() {
...
elapsedTime += Gdx.graphics.getDeltaTime();
if(TimeUtils.nanoTime() - lastLamaTime > 1000000000L) spawnLama();
Iterator<Rectangle> iter = livinglamas.iterator();
while(iter.hasNext()) {
Rectangle livinglama = iter.next();
livinglama.x += LamaXBewegung * Gdx.graphics.getDeltaTime();
if(livinglama.y + 64 < -575) iter.remove();
}
batch.begin();
for(Rectangle livinglama: livinglamas) {
batch.draw(animation.getKeyFrame(elapsedTime, true), livinglama.x, livinglama.y);
}
elapsedTime += Gdx.graphics.getDeltaTime();
...
您可以执行以下操作:
private Map<Rectangle, Integer> rectByInt;
我不确定您要尝试做的是什么,但我认为您要寻找的是Rectangle
一个最小包装类,其中包含一个int id:
public class RectangleWrapper {
private int id;
private Rectangle rectangle;
//getters and setters
}
或地图(如果您不关心集合的顺序,则可以使用HashMap<>
):
Map<Integer, Rectangle> livinglamas = new HashMap<Integer, Rectangle>();
livinglamas.put(1, new Rectangle());//for example
对其进行子类化,并使用子类而不是Rectangle:
public class RectangleWithInt extends Rectangle {
public int value;
}
或使用Libgdx的ArrayMap。 与Java的Map不同,您可以有重复的键,并且像Array一样,它是有序的:
private ArrayMap<Rectangle, Integer> livinglamas;
//...
livinglamas.put(livinglama, someInt);
//...
Iterator<Entry<Rectangle, Integer>> iter = livinglamas.iterator();
while (iter.hasNext()){
Entry<Rectangle, Integer> entry = iter.next();
Rectangle lama = entry.key;
int value = entry.value;
//...
}
您可能应该创建一个名为Llama的类,其中包含一个int
和一个Rectangle
:
class Llama
{
public int n;
public Rectangle box = new Rectangle();
}
然后在spawnLama
:
Llama livinglama = new Llama();
livinglama.box.x = MathUtils.random(-800, -400 - 64);
等等
只需创建一些包装器来绑定矩形和整数:
public class DataHolder {
public final Rectangle rect;
public final int i;
public DataHolder(Rectangle rect, int i) {
this.rect = rect;
this.i = i;
}
}
然后创建dataHolders的数组或arraylist:
// array of dataholders (fixed size)
DataHolder[] arr = new DataHolder[size];
arr[0] = new DataHolder(someRectangle, someInteger);
// arraylist of dataholders (dynamically expandable size)
ArrayList<DataHolder> arrlist = new ArrayList<>();
arrlist.add(new DataHolder(someRectangle, someInteger));
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