void DrawEngine::drawBlock(int x, int y, COLORREF color)
{
    HBRUSH hBrush = CreateSolidBrush(color);
    rect.left = x;
    rect.right = x + 1;
    rect.top = y;
    rect.bottom = y + 1;
    FillRect(hdc, &rect, hBrush);
    MoveToEx(hdc, x, y + 1, NULL);
    LineTo(hdc, x, y);
    LineTo(hdc, x + 1, y);
    DeleteObject(hBrush);
}
void DrawEngine::drawInterface()
{
    HBRUSH hBrush = CreateSolidBrush(RGB(70,70,70));
    rect.top = height;
    rect.left = width;
    rect.bottom = 0;
    rect.right = width + 8;
    FillRect(hdc, &rect, hBrush);
    DeleteObject(hBrush);
}
void DrawEngine::drawNextPiece(Piece &piece, int x, int y)
{
    TCHAR szBuffer[] = TEXT("Next:");
    TextOut(hdc, x, y + 5, szBuffer, lstrlen(szBuffer));
    COLORREF color = piece.getColor();
    for (int i = 0; i < 4; i++)
    {
        for (int j = 0; j < 4; j++)
        {
            if (piece.isPointExists(i, j))
                drawBlock(i + x, j + y, color);
            else
                drawBlock(i + x, j + y, RGB(0,0,0));
        }
    }
}