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我每秒排序我的數組30次(對象的y值)。現在,爲了提高性能,我只想對排名改變的對象進行排序。 我把它們放在一個列表中,並在排序後清除列表。 但是,我怎樣才能排序這些對象,而不是整個陣列?LibGDX/Java:只從另一個數組中排序對象
public CustomOrthogonalTiledMapRenderer(TiledMap map, final GameScreen gameScreen) {
super(map);
this.gameScreen = gameScreen;
pComparator = new Comparator<Object>() {
@Override
public int compare(Object object, Object t1) {
float p1 = object.rectangle.getY();
float p2 = t1.rectangle.getY();
if (p1 > p2) {
return -1; // First bigger
} else if (p1 < p2) {
return 1; // Second bigger
} else
return 0; // They are the same
}
};
}
[...]
gameScreen.game.tiledMapHandler.objects.sort(...); //I want to sort all objects from the lastmodifiedobjects list there
gameScreen.game.tiledMapHandler.lastModifiedObjects.clear();
for (Object o : gameScreen.game.tiledMapHandler.objects) {
//render objects