bool Level::isHitLeft() const
{
    POINT apt[4];
    int n = current->getLeftSide(apt);
    int x, y;
    for (int i = 0; i < n; i++)
    {
        x = posX + apt[i].x;
        y = posY + apt[i].y;
        if (y > height - 1)
            continue;
        if (x == 0 || board[x-1][y] != RGB(0,0,0))
            return true;
    }
    return false;
}

bool Level::isHitRight() const
{
    POINT apt[4];
    int n = current->getRightSide(apt);
    int x, y;
    for (int i = 0; i < n; i++)
    {
        x = posX + apt[i].x;
        y = posY + apt[i].y;
        if (y > height - 1)
            continue;
        if (x == width - 1 || board[x+1][y] != RGB(0,0,0))
            return true;
    }
    return false;
}

bool Level::isHitBottom() const
{
    POINT apt[4];
    int n = current->getSkirt(apt);
    int x, y;
    for (int i = 0; i < n; i++)
    {
        x = posX + apt[i].x;
        y = posY + apt[i].y;
        if (y < height && (y == 0 || board[x][y-1] != RGB(0,0,0)))
            return true;
    }
    return false;
}