在 Java 中重叠 objects

Question

正如标题所说，我遇到了 object 重叠的问题。我希望它们能够重叠，因为我需要 object X 在 object Y 之上才能得到一个点，如果我从 Y 之上删除 object X，我删除所述点。那么我的问题是，如果 object Y 在 object X 之前创建，一旦我将 object X 放在 Y 之上，我就不能再移动它并且它总是输出到控制台， Object Y. 我想知道是否有更简单的方法来解决这个问题。

我尝试向前移动，但盒子不动：

[

这是我用来生成关卡数据的代码

 private List<ImageTile> createLevel(){
    ArrayList<Movable> aux1 = new ArrayList<>();
    ArrayList<Immovable> aux2 = new ArrayList<>();

    try {
        Scanner sc = new Scanner(new File ("levels/level" + levelID + ".txt"));
        String line = "";

        while(sc.hasNextLine()) {
            for (int y = 0; y < HEIGHT; y++) {
                line = sc.nextLine();
                for(int x = 0; x < WIDTH ; x++) {
                    levelObjects.add(new floor(new Point2D(x,y), "Floor", 0));//adding the floor before anything else
                    char letter = line.charAt(x); // checking the character in the X coordinate
                    if (letter == 'E') { // in case, there's a E, that's the starting position of the player
                        player = new Forklift(new Point2D(x,y), "Forklift_U", 2);
                        levelObjects.add(player);
                        objects.add(player);
                    } else if(letter != ' ') {
                        AbstractObject obj = ObjectCreation.readChar(letter, x, y); // going to look for the object in Factory to be put in the X and Y position
                        if(obj instanceof Immovable) {
                            aux2.add((Immovable) obj);
                        }else if(obj instanceof Movable) {
                            aux1.add((Movable) obj);
                        }
                        //                          comp.comprator(obj, obj);
                        objects.add(obj);
                        levelObjects.add(obj);//implementing said object into the Level
                    }
                }
            }
        }
        sc.close(); //Closing Scanner
    } catch (FileNotFoundException e) {
        System.out.println("No levels found!");
    }
    still = aux2;
    moving = aux1;
    return levelObjects;
}

然后我用通用移动函数检查盒子（或实例 Movable 的任何 object 部分）是否可以移动到下一个位置

public void move(Direction direction) {
    Vector2D pos = direction.asVector(); // Transforming the direction in a vector right off the bat.
    Point2D currentPosition = getPosition(); // getting the current position of either player or object.
    Point2D nextPosition = currentPosition.plus(pos); // the next position as to which the player or the object intend to go to.

    if(isTransposable(nextPosition)) { // calls the function to see if the object is able to move to the next position, this prevents the boxes from pushing up into the walls and from into each other {
        setPosition(nextPosition); //if it can, then the object will go to the next position
    }
}

这是为了检查object是否可以前进到下一个位置；

public boolean isTransposable(Point2D pos) { // is the object able to move to the next position
    for(AbstractObject obj1 : Game.getInstance().getObjects()) { // for-each to get all the objects, with the exception of the floor, from the game.
        if((obj1.isBlockable() && obj1.getPosition().equals(pos))){ // if the object is able to block and if it's position is the same as the nextPosition.
            return false;
        }
    }
    return true; // otherwise it's able to be walked on.
}

Answer 1

这是一个简单的例子，有两个列表，一个优先于另一个。在图片中，您可以看到盒子位于目标上方，但一旦发生这种情况，引擎就会读取最先出现的图块，在本例中是目标图块。由于那个是不可移动的，这意味着它无论如何都不可能是 pushed/moved。不管你上面有没有什么可以的。

我用来修复它的一种方法是简单地检查对象是否是 class 可移动的

public boolean isMovable(Point2D pos) {
    for(AbstractObject obj1 : Game.getInstance().getObjects()) { 
        if((obj1.isMovable() && instanceof Movable)){ 
            return true;
        }
    }
    return false;
}

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