很久以前，DOS下的Fox有个小游戏puzzle，工作之余玩一玩还是很不错的。后来它消失了，Foxer们觉得遗憾，于是Vfp8开始，它又回来了。俺照猫画虎编写一个，弥补6.0、7.0的遗憾。以下代码复制，保存成一个prg，运行。若有不如意之处，请自行修改。
**************************************************
*-- Name:   VFP Game "Puzzle"
*-- Author: Ilikefox
*-- Time:   09/28/2007 19:45:09
*-- CopyLeft:)  You can copy, modify, distribute... anything you like!

oPuzzle=CREATEOBJECT("puzzleform")
oPuzzle.show
READ events

DEFINE CLASS puzzleform AS form
    Height = 229
    Width = 132
    DoCreate = .T.
    AutoCenter = .T.
    BorderStyle = 2
    Caption = "Puzzle"
    MaxButton = .F.
    Name = "frmPuzzle"
    ADD OBJECT panel1 AS panel WITH ;
        Top = 12, ;
        Left = 12, ;
        TabIndex = 2, ;
        Name = "Panel1"
    ADD OBJECT cmdshuffle AS checkbox WITH ;
        Top = 192, ;
        Left = 12, ;
        Height = 25, ;
        Width = 109, ;
        Caption = "\<Shuffle", ;
        Style = 1, ;
        Name = "cmdShuffle"
    PROCEDURE Unload
        CLEAR EVENTS 
    ENDPROC
    PROCEDURE cmdshuffle.Click
        LOCAL nValue, nPos, oPanel
        this.Value=0 
        =RAND(-1)
        oPanel=thisform.panel1
        oPanel.LayoutArray=0
        FOR nValue=1 TO 15
            DO WHILE .t.
                nPos=INT(16*RAND()+1)
                IF oPanel.LayoutArray(nPos)=0
                    oPanel.LayoutArray(nPos)=nValue
                    EXIT 
                ENDIF
            ENDDO
        ENDFOR
        oPanel.handalfocus
        oPanel.shuffle
    ENDPROC
ENDDEFINE
DEFINE CLASS panel AS container
    Width = 108
    Height = 164
    SpecialEffect = 1
    layoutstr = ""
    Name = "panel"
    DIMENSION layoutarray[16]
    PROCEDURE shuffle
        WITH this
            FOR nI=1 TO 16
                nValue=.LayoutArray(nI)
                IF nValue>0
                    .controls(nValue).Position=nI
                ENDIF
            ENDFOR
        ENDWITH
    ENDPROC
    PROCEDURE movetile
        Lparameters oTile
        Local nPos,nRow,nCol
        nPos=oTile.Position
        nRow=Ceiling(nPos/4)
        nCol=nPos-(nRow-1)*4
        With This
            For nDegree=0 To 270 Step 90
                nNextRow=nRow+Sin(Dtor(nDegree))
                nNextCol=nCol+Cos(Dtor(nDegree))
                nNextPos=(nNextRow-1)*4+nNextCol
                If nNextRow*nNextCol<1 Or nNextRow>4 Or nNextCol>4
                    Loop
                Endif
                If .LayoutArray(nNextPos)=0
                    .LayoutArray(nNextPos)=.LayoutArray(nPos)
                    .LayoutArray(nPos)=0
                    oTile.Position=nNextPos
                    .getcurrentlayoutstr
                    .checkwinningcondition
                    Exit
                Endif
            Endfor
        Endwith
    ENDPROC
    PROCEDURE getcurrentlayoutstr
        With This
            .LayoutStr=""
            For nI=1 To 16
                .LayoutStr=.LayoutStr+RIGHT(TRANSFORM(.LayoutArray(nI),"@0"),1)
            Endfor
        Endwith
    ENDPROC
    PROCEDURE checkwinningcondition
        IF this.layoutstr="123456789ABCDEF0"
            =MESSAGEBOX("We have a Winner!!!",48,"Congretuations")
        ENDIF
    ENDPROC
    PROCEDURE handalfocus
        this.cmdFocusHolder.setfocus
    ENDPROC
    PROCEDURE Init
        Local nI
        With This
*!*                If File("Puzzle.CFG")
*!*    **这里偷懒了，原本想采用一个文件保存上次结束游戏的状态。
*!*                Else
                This.LayoutArray=0
                For nI=1 To 15
                    .LayoutArray(nI)=nI
                Endfor
*!*                Endif
            For nI=1 To 15
                cTileNum=Transform(nI)
                .AddObject("Tile"+cTileNum,"Tile")
                .controls(nI).Caption=cTileNum
                .controls(nI).Visible=.T.
            ENDFOR
            .AddObject("cmdFocusHolder","CommandButton")
            .cmdFocusHolder.width=10
            .cmdFocusHolder.height=10
            .cmdFocusHolder.left=200
            .cmdFocusHolder.visible=.t.
            .handalfocus
            .shuffle
        Endwith
    ENDPROC
ENDDEFINE

DEFINE CLASS tile AS checkbox
    Height = 40
    Width = 26
    FontBold = .F.
    FontItalic = .F.
    FontOutline = .F.
    FontShadow = .F.
    FontSize = 11
    FontUnderline = .F.
    FontCondense = .F.
    FontExtend = .F.
    Caption = "X"
    MousePointer = 0
    Style = 1
    position = 0
    Name = "tile"
    PROCEDURE position_assign
        LPARAMETERS vNewVal
        LOCAL nRow,nCol
        WITH THIS
            .Position = m.vNewVal
            nRow=CEILING(vNewVal/4)
            nCol=vNewVal-4*(nRow-1)
            .top=2+.height*(nRow-1)
            .left=2+.width*(nCol-1)
        ENDWITH
    ENDPROC
    PROCEDURE Click
        This.Value=0
        this.parent.handalFocus
        This.Parent.MoveTile(This)
    ENDPROC
ENDDEFINE