Monthly Archives: January 2018

xlCubeSuper An Excel Game Explained – Part5

The main explanation text for this article is in black and bold font. This is the primary procedure used in xlCubeSuper. When a cell is clicked, something happens depending on where it is and what it contains. The original documentation for this procedure is highlighted in green and other procedures used are highlighted in blue. They will be discussed in Part6.

 

“Shooting” is accomplished by this event procedure.

 

Private Sub Workbook_SheetSelectionChange(ByVal Sh As Object, ByVal Target As Excel.Range)

 

If Over Then Exit Sub ‘the Over variable is set to True when a game is finished

 

If ActiveSheet.Name = “Scores” Then Exit Sub ‘just in case you want to unhide this sheet

If Target.Font.ColorIndex > 1 Then Exit Sub ‘it already contains an “X”

If ActiveCell.Address <> Target.Address Then Exit Sub ‘if it is not a single cell selection

If Intersect(Range(“board”), Target) Is Nothing Then Exit Sub ‘if the selection is not on the board

 

Each of the 5 previous If-Then statement handle situations where the shot is not “correct”.

 

Calculate

NumOfHits = Application.WorksheetFunction.Sum(Range(“sumofhits”).Value) ‘hits before entry

On Error GoTo TheEnd

ActiveSheet.Unprotect

 

Target.Value = 1 ‘entry is made

This is prehaps the most important part of this procedure, although it looks very simple. It is, but adding a 1 to the cell does several things. First, it allows the formulas described in Part4 to keep track of all of the shots and hits. So, how does an X appear on the game board? Each cell has a custom format of “X”,,, which shows an X in the cell no matter what is entered.

 

Calculate

fShtPos = 0

TheRange = “”

 

The following loop checks to see whether the active cell is where any of the 7 centers of the cubes is located. If so, it will disable the hint in the menu associated with that cube and place a blue at that spot. Next, if the game is over (z=7) any hint costs will be summed and then added to the curent # of shots.

 

For p = 1 To 7

 

On Error Resume Next

 

tdRangeParse “centerShip” & p

 

If ActiveSheet.Name & Target.Address = fShtPos & TheRange Then ‘if a center of a cube has been hit

 

Target.Font.ColorIndex = 32

MsgBox “You just destroyed xlCube” & p & “!”, , “DESTROYED!”

Names(“cShip” & p).RefersTo = Range(“sums” & p).Value ‘changes name from reference to a value (# of hits)

Names(“centerShip” & p).Delete

Set cBar = Application.CommandBars.FindControl(Tag:=”Hint” & p)

cBar.Enabled = False ‘disables hint since corresponding cube is gone

 

For z = 1 To 7

 

If Mid(Names(“cShip” & z).RefersTo, 2, 1) = “‘” Then Exit For

 

If z = 7 Then

pScore = hint1Val + hint2Val + hint3Val + hint4Val + hint5Val + hint6Val + hint7Val ‘sums penalty score for hints

sScore = Range(“x15”).Value

fScore = pScore + sScore

MsgBox “The game is over! Your score is ” & fScore & “. ” & Chr(10) & Chr(13) & Level(fScore), , “GAME OVER!”

EnterInfo fScore

SortTable

ThisWorkbook.Save ‘saves changes made to records table

NewGame

Exit Sub

End If

 

Next

 

‘ActiveSheet.Protect

Exit Sub

End If

 

Next

If NumOfHits < Application.WorksheetFunction.Sum(Range(“sumofhits”).Value) Then

Target.Font.ColorIndex = 3 ‘turns red if hits > before event

End If

 

Finally, if the the shot is a hit, it will change the font color to red.

 

ActiveSheet.Protect

TheEnd:

End Sub

 

Although I have not explained every aspect of this procedure, I hope that this helps!

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xlCubeSuper An Excel Game Explained – Part4

This is the 4th post to explain in detail how my xlCube game application was constructed. To read the previous post, go to:

https://dhexcel1.wordpress.com/2018/01/21/xlcubesuper-an-excel-game-explained-part3/

The number of hits is recorded by this formula

=SUM(BigBoard)

Where BigBoard is the 3D range representing the playing board.

The number of shots is recorded by this type of formula for each of the 7 cubes.

=IF(ISNA(ERROR.TYPE(cShip7)),SUM(cShip7),IF(ERROR.TYPE(cShip7)=5,0,SUM(cShip7)))

For explanation of the ERROR.TYPE function, see:

https://support.office.com/en-us/article/ERROR-TYPE-function-10958677-7c8d-44f7-ae77-b9a9ee6eefaa?NS=EXCEL&Version=16&SysLcid=1033&UiLcid=1033&AppVer=ZXL160&HelpId=xlmain11.chm60309&ui=en-US&rs=en-US&ad=US

See the figure for each area discussed.

 xlCS4_Board

The following formulas use the EVALUATE function, which is an old-style xlm macro function. It can only be used in a defined name formula. If you have noticed an issue opening the game application, this may be the cause. You would then have to place the file in a trusted location to open it. They are used in the conditional formatting of the 7 hits cells.

gbool1 =ERROR.TYPE(EVALUATE(“cShip”&ROW()-5))=5

This formula is really just there in case there is no ship center for that specific ship. Previously, the user was allowed to select the number of ships to be created, so this conditional formatting formula is really a legacy feature, not affecting the game functionality.

gbool2 =NOT(ISERROR(EVALUATE(“cShip”&ROW()-5)))

If the cell for cShip1 (in row 6) has a black color from conditional formatting, it means that this formula is TRUE, cShip1 does not exist. It has been destroyed.

The next post will focus on “taking a shot”.

 

 

 

xlCubeSuper An Excel Game Explained – Part3

This is the 3rd post to explain in detail how my xlCube game application was constructed. To read the previous post, go to:

https://dhexcel1.wordpress.com/2018/01/20/xlcubesuper-an-excel-game-explained-part2/

This is the VBA routine I developed to add 3D cube ranges to the playing board of xlCubeSuper. It generates 7 3D ranges randomly with sizes ranging from 3x3x3 to 15x15x15.

Sub tdAddNamedRanges()

Randomize ‘ Initialize random-number generator

For s = 1 To 7

‘set x,y, and z values to fall within limits determined by cube size

x = 1 + Int(Rnd() * (20 – (2 * s)))

y = 1 + Int(Rnd() * (20 – (2 * s)))

z = 1 + Int(Rnd() * (20 – (2 * s)))

‘create R1C1 style formula strings

cShipStr = “='” & z & “:” & z + (2 * s) & “‘!R” & x & “C” & y & “:R” & x + (2 * s) & “C” & y + (2 * s)

centerShipStr = “='” & z + s & “‘!R” & x + s & “C” & y + s

‘create names for cube 3D references and the centers of each cube

matchVar = False

With ThisWorkbook.Names

.Add Name:=”cShip” & s, RefersToR1C1:=cShipStr, Visible:=False

.Add Name:=”centerShip” & s, RefersToR1C1:=centerShipStr, Visible:=False

End With

If s > 1 Then

For m = 1 To s – 1

If Names(“centership” & m).RefersTo = Names(“centership” & s).RefersTo Then

matchVar = True

End If

Next

End If

If matchVar Then

s = s – 1

End If

Next

End Sub

The first statement in the VBA procedure uses RANDOMIZE to create a numeric seed that will be used by the RND function to generate a random number.

Inside the For-Next statement, which sets the variable “s” to a value from 1 to 7, the xyz coordinates for each cube are generated as follows:

x = 1 + Int(Rnd() * (20 – (2 * s)))

y = 1 + Int(Rnd() * (20 – (2 * s)))

z = 1 + Int(Rnd() * (20 – (2 * s)))

The numbers generated by these fomulas keep the cube on the board, depending on the value of “s”. The z coordinate is for the worksheets included in tne board and the xy coordinates are for the cells.

Then, for each value of “s”, the 3D cubical range and the center of each cube are generated with these formulas in R1C1 format.

cShipStr = “='” & z & “:” & z + (2 * s) & “‘!R” & x & “C” & y & “:R” & x + (2 * s) & “C” & y + (2 * s)

centerShipStr = “='” & z + s & “‘!R” & x + s & “C” & y + s

When they are saved as defined name formulas using the following code,

With ThisWorkbook.Names

.Add Name:=”cShip” & s, RefersToR1C1:=cShipStr, Visible:=False

.Add Name:=”centerShip” & s, RefersToR1C1:=centerShipStr, Visible:=False

End With

the formulas are converted by Excel into A1 format.

Originally, this was all of the code for this process. What I had ignored what the fact that two different cubes could have the exact same center. During all of the testing/playing of this game over the years, that scenario was never recognized as having occurred. But the current version, with 7 cubes, had this happen several times in early testing. So, I came up with this solution to correct this issue.

If s > 1 Then

For m = 1 To s – 1

If Names(“centership” & m).RefersTo = Names(“centership” & s).RefersTo Then

matchVar = True

End If

Next

End If

If matchVar Then

s = s – 1

End If

A key part to this code is

Names(“centership” & m).RefersTo = Names(“centership” & s).RefersTo

which compares the currently added formula to each previous formula added. If this statement is TRUE, then matchVar is set to TRUE. Then,

If matchVar Then

s = s – 1

End If

which decrements “s” by 1, effectively rerunning the previously generated 3D formula until an unique center is produced.

The next post will discuss the worksheet formulas used in this game.

 

 

 

 

 

xlCubeSuper An Excel Game Explained – Part2

In Part1, the new version of xlCube (now referred to as xlCubeSuper) was introduced.

https://dhexcel1.wordpress.com/2018/01/19/xlcubesuper-an-excel-game-explained-part1/

In Part2, I will describe the different techniques to make this game application work. But, before I do, I think that it is important to point out that the game is not tied down tight. For example, there is no workbook-level protection. If users wanted to, they could damage the integrity of the game by adding or deleting worksheets (if they saved the changes). So, the game is not tamper-proof and was never intended to be. Rather, it was made as a game to be enjoyed and an application to learn from. Here then is a list of the major techniques to be discussed.

  • 3D formulas
  • Defined named formulas
  • Conditional formatting formulas
  • Formulas to aggregate shots and hits
  • Use of VBA to:
  1. Add 3D ranges
  2. Shoot using VBA event procedure.
  3. Create and delete non-ribbon (old style) menus.
  4. Store and sort game scores.
  5. Control the formatting of shots and hits.
  6. Display information and results.

The backbone of this game is the 3D formulas created to define virtual cubes and the center of those cubes. We will see in a later post how these formulas are generated through VBA, but for now, here is what they look like as shown in Name Manager.

xlCS2_3Dformulas

In Part3 we will see how these formulas are created in random locations by VBA.

xlCubeSuper An Excel Game Explained – Part1

I have just recently updated/modified my xlCube game that I first started on 20 years ago. The main modification is that it now has 7 cubes that must be destroyed before the game is over. For those who have never played the game, the previous version can be found at:

https://dhexcel1.wordpress.com/2016/11/29/xlcube-an-excel-game/

The new game is called xlCubeSuper. And, like the previous release, I encourage you to dig into the details of how this application was constructed. But, I know that your time is precious, and you may feel that this would not be an effective use of your Excel time. So, this time I am going to explain in detail all of the tricks and techniques used in the making of this game. In Part 1, I am only making it available to you. The explanation will come in subsequent posts. In the meantime, have fun with it.

You can download the file here.

xlcubeSuper

 

#Excel Data Validation – Non-Contiguous Ranges and Changing Data Validation List after Picking

I recently saw this challenge for creating a data validation list from 2 non-contiguous ranges.

https://www.sumproduct.com/blog/article/monday-morning-mulling-december-challenge

Then, while looking up current information about data validation tricks, I reread this post on Debra Dalgleish’s Excel site, which showes a way to change the data validation list based on items picked.

http://www.contextures.com/xlDataVal03.html

I decided that I would try to combine both of these techniques, while at the same time creating the required data validation list without the need for helper columns. When I started on this, I was not sure that it would be possible, but that is the kind of challenge I like 😊.

I had previously published a method for combining non-contiguous ranges into a comma-delimited string.

https://dhexcel1.wordpress.com/2017/05/21/excel-short-and-sweet-tip-15-using-textjoin-with-non-contiguous-ranges-by-david-hager/

Using this technique along with modifying the ranges to exclude blank values, the following formula produces a delimited string combining the elements of two ranges named List1 and List2, as shown in the figure.

DV_PIC1

TJ_TLists =TEXTJOIN(“,”,TRUE,IF(ISBLANK(List1),””,List1),IF(ISBLANK(List2),””,List2))

It is important to note here that any number of ranges (rectangular, non-contiguous or 3D) can be combined in this step to afford the data validation list in the final step. As an example, see:

https://dhexcel1.wordpress.com/2017/05/23/excel-native-3d-ranges-with-the-textjoin-function-plus-bonus-by-david-hager/

The next formula converts this delimited string into an array.

CombinedDV =TRIM(MID(SUBSTITUTE(TJ_TLists,”,”,REPT(” “,999)),ROW(INDIRECT(“1:”&LEN(TJ_TLists)-LEN(SUBSTITUTE(TJ_TLists,”,”,””))+1))*999-998,999))

Unfortunately, an array cannot be used directly as a data validation list. But, since there is more work to do to create data validation that can be used as a pick list, the following formulas are needed.

MatchArr=IF(ISNA(MATCH(ROW(INDIRECT(“1:”&COUNTA(CombinedDV))),MATCH(SelectDV,CombinedDV,0),0)),CombinedDV,””)

affords {“”;”b”;”c”;”d”;”e”;”f”;”g”;”h”;”I”;”j”;”k”;”l”;”m”;”n”;””}

MatchRow=IF(ISNA(MATCH(ROW(INDIRECT(“1:”&COUNTA(CombinedDV))),MATCH(SelectDV,CombinedDV,0),0)),ROW(INDIRECT(“1:”&COUNTA(CombinedDV))),””)

affords {“”;2;3;4;5;6;7;8;9;10;11;12;13;14;””}

Then in cell H2 is entered the formula =INDEX(MatchArr,SMALL(MatchRow,ROW()-1)),which is filled down until a formula returns an error. This is the range to be used as a data validation list.

As shown in the figure, the range where data validation is applied

SelectDV=DVSheet!$B$2:$B$16

contains an “a” and an “o”.

Then, the formula used for the data validation list is

DVList=DVSheet!$H$2:INDEX(DVSheet!$H$1:$H$16,MATCH(TRUE,ISERROR(DVSheet!$H$1:$H$16),0)-1)

So, when the data validation is used in its current state, the list will not contain those two letters.

I hope that you find this useful.

The example file can be downloaded here.

DV_TwoLists