java - Libgdx 碰撞问题

Question

我正在制作一款自上而下的角色扮演游戏。我几乎已经完成了移动系统，但我似乎无法弄清楚如何检测玩家是否应该阻止玩家。我的 tmx 文件中有两个对象层，玩家应该在任何 map 上与之交互:NPC 层和碰撞层。我尝试过 NPC 是图 block 对象(以 RectangleMapObjects 形式出现)，通常为 1.5 个图 block 高，碰撞对象是多边形，而且我也有一些图 block ，我只想从一侧访问，因此我需要知道取决于方向的三个独立点是否在碰撞内。几个小时后，这就是我所得到的:

public boolean canWalk(float xc, float yc, String dir)
{
    int i = 0;
    while (true)
    {
        try
        {
            RectangleMapObject temp = (RectangleMapObject) ents.get(i);
            if (!temp.equals(player))
            {
                if (dir.equals("s"))
                {
                    float cy = ((y) * 16) - 2;
                    float cx = ((x) * 16) + 2;
                    return !(temp.getRectangle().contains(cx + 6, cy + 8));
                }
                else if (dir.equals("n"))
                {
                    float cy = ((y + 1) * 16) + 2;
                    float cx = ((x) * 16) + 2;
                    return !(temp.getRectangle().contains(cx, cy) && temp.getRectangle().contains(cx + 6, cy) && temp.getRectangle().contains(cx + 12, cy));
                }
                else if (dir.equals("e"))
                {
                    float cy = ((y) * 16) + 2;
                    float cx = ((x + 1) * 16) + 2;
                    return !(temp.getRectangle().contains(cx, cy) && temp.getRectangle().contains(cx, cy + 6) && temp.getRectangle().contains(cx, cy + 12));
                }
                else if (dir.equals("w"))
                {
                    float cy = ((y) * 16) + 2;
                    float cx = ((x) * 16) - 2;
                    return !(temp.getRectangle().contains(cx, cy) && temp.getRectangle().contains(cx, cy + 6) && temp.getRectangle().contains(cx, cy + 12));
                }
            }
        }
        catch (IndexOutOfBoundsException e)
        {
            break;
        }
        i++;
    }
    versionid = "" + i + ",";
    i = 0;
    while (true)
    {
        try
        {
            PolygonMapObject temp = (PolygonMapObject) cols.get(i);
            if (dir.equals("s"))
            {
                float cy = ((y) * 16) - 2;
                float cx = ((x) * 16) + 2;
                return !(temp.getPolygon().contains(cx, cy) && temp.getPolygon().contains(cx + 6, cy) && temp.getPolygon().contains(cx + 12, cy));
            }
            else if (dir.equals("n"))
            {
                float cy = ((y + 1) * 16) + 2;
                float cx = ((x) * 16) + 2;
                return !(temp.getPolygon().contains(cx, cy) && temp.getPolygon().contains(cx + 6, cy) && temp.getPolygon().contains(cx + 12, cy));
            }
            else if (dir.equals("e"))
            {
                float cy = ((y) * 16) + 2;
                float cx = ((x + 1) * 16) + 2;
                return !(temp.getPolygon().contains(cx, cy) && temp.getPolygon().contains(cx, cy + 6) && temp.getPolygon().contains(cx, cy + 12));
            }
            else if (dir.equals("w"))
            {
                float cy = ((y) * 16) + 2;
                float cx = ((x) * 16) - 2;
                return !(temp.getPolygon().contains(cx, cy) && temp.getPolygon().contains(cx, cy + 6) && temp.getPolygon().contains(cx, cy + 12));
            }
        }
        catch (IndexOutOfBoundsException e)
        {
            break;
        }
        i++;
    }
    versionid = versionid + i;
    return true;
}

它总是返回 true

解决了我自己的问题，愚蠢的错误，每张支票都有保证返回，而不是仅在必要时返回

Answer 1

我发现这里是任何想要它的人的功能代码

public boolean canWalk(String dir)
{
    int i = 0;
    while (true)
    {
        try
        {
            RectangleMapObject temp = (RectangleMapObject) ents.get(i);
            if (!temp.equals(player))
            {
                if (dir.equals("s"))
                {
                    float cy = ((y) * 16) - 2;
                    float cx = ((x) * 16) + 2;
                    if (temp.getRectangle().contains(cx + 6, cy + 8))
                    {
                        return false;
                    }
                }
                else if (dir.equals("n"))
                {
                    float cy = ((y + 1) * 16) + 2;
                    float cx = ((x) * 16) + 2;
                    if (temp.getRectangle().contains(cx, cy) && temp.getRectangle().contains(cx + 6, cy) && temp.getRectangle().contains(cx + 12, cy))
                    {
                        return false;
                    }
                }
                else if (dir.equals("e"))
                {
                    float cy = ((y) * 16) + 2;
                    float cx = ((x + 1) * 16) + 2;
                    if (temp.getRectangle().contains(cx, cy) && temp.getRectangle().contains(cx, cy + 6) && temp.getRectangle().contains(cx, cy + 12))
                    {
                        return false;
                    }
                }
                else if (dir.equals("w"))
                {
                    float cy = ((y) * 16) + 2;
                    float cx = ((x) * 16) - 2;
                    if (temp.getRectangle().contains(cx, cy) && temp.getRectangle().contains(cx, cy + 6) && temp.getRectangle().contains(cx, cy + 12))
                    {
                        return false;
                    }
                }
            }
        }
        catch (IndexOutOfBoundsException e)
        {
            break;
        }
        i++;
    }
    i = 0;
    while (true)
    {
        try
        {
            PolygonMapObject temp = (PolygonMapObject) cols.get(i);
            if (dir.equals("s"))
            {
                float cy = ((y) * 16) - 2;
                float cx = ((x) * 16) + 2;
                if (temp.getPolygon().contains(cx, cy) && temp.getPolygon().contains(cx + 6, cy) && temp.getPolygon().contains(cx + 12, cy))
                {
                    return false;
                }
            }
            else if (dir.equals("n"))
            {
                float cy = ((y + 1) * 16) + 2;
                float cx = ((x) * 16) + 2;
                if (temp.getPolygon().contains(cx, cy) && temp.getPolygon().contains(cx + 6, cy) && temp.getPolygon().contains(cx + 12, cy))
                {
                    return false;
                }
            }
            else if (dir.equals("e"))
            {
                float cy = ((y) * 16) + 2;
                float cx = ((x + 1) * 16) + 2;
                if (temp.getPolygon().contains(cx, cy) && temp.getPolygon().contains(cx, cy + 6) && temp.getPolygon().contains(cx, cy + 12))
                {
                    return false;
                }
            }
            else if (dir.equals("w"))
            {
                float cy = ((y) * 16) + 2;
                float cx = ((x) * 16) - 2;
                if (temp.getPolygon().contains(cx, cy) && temp.getPolygon().contains(cx, cy + 6) && temp.getPolygon().contains(cx, cy + 12))
                {
                    return false;
                }
            }
        }
        catch (IndexOutOfBoundsException e)
        {
            break;
        }
        i++;
    }
    return true;
}

只是我回答此问题以关闭它的注释