Question

我有4个对象movieClips（假设Card1，Card2，Card3，Card4）。

Card4位于顶部且覆盖Card3的某些部分，与Card3覆盖Card2的某些部分相同，而Card2覆盖了Card1的某些部分。

现在每当我在Card3上拖动Card4时我想做什么。所以，这里Card4应该采取与之前相同的位置或深度。而card3应该采用Card4 Position手段，以及Card4之前的位置。

我怎样才能做到这一点？这是我的鼠标按下事件。这里的板子是我的容器，我把所有卡片放在显示对象上。

function CardDraging(event:MouseEvent):void
{
    event.target.startDrag();
    currentCard = event.target as DisplayObject;
    board.setChildIndex(currentCard, board.numChildren-1);    
}

Answer 1

你应该添加条件：如果当前卡是Card4并且它击中了测试卡3，那么......

if (currentCard == Card4 && currentCard.hitTestObject(Card3))
{
    // If Card3 under Card4, then move Card3 to top.
    if (getChildIndex(Card3) < getChildIndex(Card4))
        swapChildren(Card3, Card4);
}

更新1：

import flash.events.MouseEvent;
import flash.display.MovieClip;

addEventListener(MouseEvent.MOUSE_DOWN, mouseDown);

var currentCard: MovieClip;

function mouseDown(event: MouseEvent): void
{
    currentCard = event.target as MovieClip;
    currentCard.startDrag();

    stage.addEventListener(MouseEvent.MOUSE_MOVE, mouseMove);
    stage.addEventListener(MouseEvent.MOUSE_UP, mouseUp);
}

function mouseMove(event: MouseEvent): void
{
    if (currentCard.hitTestObject(Card1))
    {
        if (getChildIndex(Card1) < getChildIndex(currentCard))
            swapChildren(Card1, currentCard);
    }
    else if (currentCard.hitTestObject(Card2))
    {
        if (getChildIndex(Card2) < getChildIndex(currentCard))
            swapChildren(Card2, currentCard);
    }
    else if (currentCard.hitTestObject(Card3))
    {
        if (getChildIndex(Card3) < getChildIndex(currentCard))
            swapChildren(Card3, currentCard);
    }
    else if (currentCard.hitTestObject(Card4))
    {
        if (getChildIndex(Card4) < getChildIndex(currentCard))
            swapChildren(Card4, currentCard);
    }

    event.updateAfterEvent();
}

function mouseUp(event: MouseEvent): void
{
    currentCard.stopDrag();
    stage.removeEventListener(MouseEvent.MOUSE_MOVE, mouseMove);
    stage.removeEventListener(MouseEvent.MOUSE_UP, mouseUp);
}

更新2：

import flash.events.MouseEvent;
import flash.display.MovieClip;

addEventListener(MouseEvent.MOUSE_DOWN, mouseDown);

var currentCard: MovieClip;

function mouseDown(event: MouseEvent): void
{
    currentCard = event.target as MovieClip;
    currentCard.startDrag();

    stage.addEventListener(MouseEvent.MOUSE_MOVE, mouseMove);
    stage.addEventListener(MouseEvent.MOUSE_UP, mouseUp);
    mouseMove(event);
}

function mouseMove(event: MouseEvent): void
{
    if (currentCard != Card1 && currentCard.hitTestObject(Card1))
    {
        if (getChildIndex(Card1) < getChildIndex(currentCard))
            swapChildren(Card1, currentCard);
    }

    if (currentCard != Card2 && currentCard.hitTestObject(Card2))
    {
        if (getChildIndex(Card2) < getChildIndex(currentCard))
            swapChildren(Card2, currentCard);
    }

    if (currentCard != Card3 && currentCard.hitTestObject(Card3))
    {
        if (getChildIndex(Card3) < getChildIndex(currentCard))
            swapChildren(Card3, currentCard);
    }

    if (currentCard != Card4 && currentCard.hitTestObject(Card4))
    {
        if (getChildIndex(Card4) < getChildIndex(currentCard))
            swapChildren(Card4, currentCard);
    }

    event.updateAfterEvent();
}

function mouseUp(event: MouseEvent): void
{
    currentCard.stopDrag();
    stage.removeEventListener(MouseEvent.MOUSE_MOVE, mouseMove);
    stage.removeEventListener(MouseEvent.MOUSE_UP, mouseUp);
}

在as3中拖动-Wapping-Dropping

1 个答案: