Microsoft WSH and VBScript Programming for the Absolute Beginner Part 42 docx

Function MarkPlayerSelection ‘Mark an X or O in the appropriate cellIf strPlayerInput = “A1” Then A1 = strPlayer End If If strPlayerInput = “A2” Then A2 = strPlayer End If If strPlayerIn

Trang 1

If strPlayerInput = “” Then ‘Player must type something

strNotificationMsg = “Missing entry Please try again.”

blnValidCell = “False”

End If

‘Check each cell to make sure that it has not already been selected

If strPlayerInput = “A1” Then

If A1 <> “ “ Then

strNotificationMsg = “Invalid entry Cell already selected “ & _

“Please try again.”

End If

If strPlayerInput = “B1” Then

If B1 <> “ “ Then

End If

Trang 2

End If

If strPlayerInput = “C1” Then

If C1 <> “ “ Then

End If

End Function

Trang 3

Function MarkPlayerSelection() ‘Mark an X or O in the appropriate cell

A1 = strPlayer

End If

A2 = strPlayer

End If

A3 = strPlayer

End If

B1 = strPlayer

End If

B2 = strPlayer

End If

B3 = strPlayer

End If

C1 = strPlayer

End If

C2 = strPlayer

End If

C3 = strPlayer

End If

End Function

Function SeeIfWon()

‘Check across the first row

If A1 = strPlayer Then

Trang 4

strWinner = strPlayer

strDirection = “- First row across!”

End If

‘Check across the second row

If B1 = strPlayer Then

strDirection = “- Second row across!”

End If

‘Check across the third row

If C1 = strPlayer Then

strDirection = “- Third row across!”

End If

‘Check the first column

strDirection = “- First column down!”

End If

Trang 5

‘Check the second column

strDirection = “- Second column down!”

End If

‘Check the third column

strDirection = “- Third column down!”

End If

‘Check diagonally

strDirection = “- Diagonally A1 - C3!”

End If

‘Check diagonally

strDirection = “- Diagonally C1 - A3!”

End If

End Function

Trang 6

Function DisplaySplashScreen() ‘Display splash screen and terminate game

MsgBox “Thank you for playing Tic-Tac-Toe” & _

“© Jerry Ford 2004.” & vbCrLf & vbCrLf & “Please play again “ & _

“soon!”, 4144, cTitleBarMsg

WScript.Quit()

End Function

Okay, run through the Tic-Tac-Toe game a few times to be sure that you haven’t accidentally made a few typos when keying in the script After you have everything working just right,

go out and get a friend to play with and show off what you have learned.

Summary

In this chapter, you learned how to work with built-in VBScript objects This included learn-ing how to create custom objects with their own unique set of properties and methods You also learned how to trigger events associated with custom objects On top of all this, you learned how to perform complex parsing operations by working with the RegExpobject and you created your first multi-player VBScript game.

C H A L L E N G E S

1 Enhance the Tic-Tac-Toe game by adding options that allow the players to get help.

2 If you have a Web site, consider modifying the game’s closing splash screen to display its address.

3 Try making a computerized version of this game where a single player goes head

to head against the computer.

4 Add logic that keeps track of the total number of games played and display this information, along with the total number of games won by each player, at the end of the final game.

Trang 8

Combining Different Scripting

Languages

12

W elcome to the final chapter of this book In this chapter, you will learn

how to develop a new type of script, called a Windows Script File, which enables you to combine VBScript with one or more other WSH-supported scripting languages to create a single executable script Doing so enables you to create scripts that can take advantage of the strengths of each individual scripting language Specifically, in this chapter I’ll demonstrate how to develop Windows Script Files that combine VBScript and JScript Along the way, you’ll be introduced

to the Extensible Markup Language, or XML, which allows different scripting lan-guages to be combined into Windows Script Files Specifically, you will

• Learn how to combine VBScript with another scripting language to create Windows Script Files

• Learn how XML is used to format Windows Script Files

• Get a sneak peek at the JScript scripting language

• Learn how to execute Windows Script Files

Project Preview: The VBScript Game Console

In your final project, you will learn how to create Windows Script Files that com-bine VBScript with a little bit of JScript to create a game console for all your VBScript games Once started, the game console displays a dynamically created numbered list of your VBScript games and enables the user to choose which game

to play by either typing in the name of the game or typing its assigned number.

Trang 9

When started, the game console appears in the upper-left corner of the display area As games are selected, they will appear in the middle of the screen This keeps the game console handy without making it intrusive Figures 12.1 through 12.5 demonstrate the overall oper-ation of the game console from beginning to end.

Figure 12.1

A JScript that

displays the game

console’s initial

splash screen is

executed

Figure 12.2

The core logic for

the game console

is provided by a

VBScript, which is

responsible for

displaying and

controlling the

execution of your

VBScript games

Figure 12.3

The game console

remains tucked

away in the

corner while the

player enjoys

playing your

VBScript game

Figure 12.4

By selecting the

About option, the

user can get more

information about

the game console

and its author

Trang 10

Introducing Windows Script Files

One of the strengths of the WSH is that it supports a number of different scripting lan-guages, including VBScript, JScript, Perl, Python, and REXX Microsoft automatically equips the WSH with VBScript and JScript Third-party software developers provide support for the other scripting languages Besides executing scripts written in any of these scripting lan-guages, the WSH enables you to put any combination of these languages into a single script

file known as a Windows Script File.

XML provides the glue for combining different scripts

into a Windows Script File In this chapter, I’ll cover

some of the more commonly used WSH-supported

XML statements However, there simply is not enough

space available in this book to completely cover every

single XML element supported by the WSH To learn

more about the WSH’s support for XML, visit

http://www.msdn.microsoft.com/scripting and read

through the Windows Script Host documentation

posted there.

Using XML, you specify the components that make up

Windows Script Files For example, you use XML to

mark the locations within Windows Script Files where

individual scripts (written in scripting languages such

as VBScript and JScript) are embedded Windows

Script Files are saved as plain text files with a wsh file

extension and can be created using any plain text or

script editor.

XML is case-sensitive and imposes a strict set of rules on the format of Windows Script Files For example, within the context of the WSH, most XML tags occur in pairs with one opening and one closing tag Failure to include a matching closing tag will result in an error.

Figure 12.5

When the game

console is finally

closed, another

JScript is run to

display a closing

splash screen

Definition

A Windows Script File is a type of

script that allows multiple scripts, written in any WSH-supported scripting language, to be combined

to create a single script

Definition

Extensible Markup Language, or XML, is a language similar in design

and syntax to HTML It is used within the context of the WSH to define the structure of Windows Script Files

Định dạng
Số trang	10
Dung lượng	265,82 KB