vb.net - AQA AS 考试级别 - COMP 1 VB

Question

我的程序似乎无法正常运行，我发现很难理解我做错了什么。

我需要以下帮助：

除了不允许用户不输入数字外，我还需要它不允许用户在列/行部分输入字符串。我在想一些与他的 ASCII 值有关的事情编辑这个我修复了我想
保存和加载游戏 - 我有这两个工作，然后我不知道我做了什么，因为现在它们不再工作了。我不知道在这里调用保存的游戏文件。

这是 AQA As Level 的框架代码。他们给你它（这不是非法的！）请帮助我！

 Sub GetRowColumn(ByRef Row As Integer, ByRef Column As Integer)
        Dim validColumn, validRow As Boolean ' These are currently set for the user to define them
        Do
            Try
                Do
                    Console.Write("Please enter column: ")
                    Column = Console.ReadLine()
                    If Column < 0 Or Column > 9 Then
                        Console.WriteLine(" That is an Invalid Input")
                    End If
                    validColumn = True     'Sets value to true if the input is valid
                    Console.WriteLine()
                Loop Until Column < 10 And Column >= 0
            Catch Ex As Exception   'If the Exception code is run then the value is set to false and the code loops. 
                validColumn = False
                Console.WriteLine("Enter number from 0 to 9")
            End Try
        Loop Until validColumn = True   'Code will loop until the ValidCol = True
        ' Below is the exact same code, but for the row. 
        Do
            Try
                Do
                    Console.Write("Please enter row: ")
                    Row = Console.ReadLine()
                    If Row < 0 Or Row > 9 Then
                        Console.WriteLine(" That is an invalid Input")
                    End If
                    validRow = True  'Sets value to true if the input is valid
                    Console.WriteLine()
                Loop Until Row < 10 And Row >= 0 'This code above will loop intil row is below than 10 
            Catch Ex As Exception 'If the Exception code is run then the value is set to false and the code loops
                validRow = False
                Console.WriteLine()
                Console.WriteLine("Enter number from 0 to 9")
                Console.WriteLine()
            End Try
            'Code will loop until the ValidRow = True
        Loop Until validRow = True
    End Sub

其他代码

'Skeleton Program for the AQA AS Paper 1 Summer 2016 examination 'this code should be used in conjunction with the Preliminary Material 'written by the AQA Programmer Team 'developed in the Visual Studio 2008 programming environment 'Version Number 1.0 Imports System.IO Module Module1 Const TrainingGame As String = "Training.txt" ' Calls the training text file used by new players Structure TShip ' Starts a new structure for use later that includes a stringed name and a size as an integer Dim Name As String Dim Size As Integer End Structure Sub MakePlayerMove(ByRef Board(,) As Char, ByRef Ships() As TShip) ' This part of the code advances on their column and row selection from earlire Dim Row As Integer Dim Column As Integer GetRowColumn(Row, Column) If Board(Row, Column) = "m" Or Board(Row, Column) = "h" Then ' m is miss h is a hit Console.WriteLine("Sorry, you have already shot at the square (" & Column & "," & Row & "). Please try again.") ElseIf Board(Row, Column) = "-" Then ' Message to user to say that they have shot in a sqaure they habe already shot in Console.WriteLine("Sorry, (" & Column & "," & Row & ") is a miss.") Board(Row, Column) = "m" Else Console.WriteLine("Hit at (" & Column & "," & Row & ").") Board(Row, Column) = "h" End If End Sub
Sub SetUpBoard(ByRef Board(,) As Char)
    Dim Row As Integer
    Dim Column As Integer
    For Row = 0 To 9
        For Column = 0 To 9
            Board(Row, Column) = "-"
        Next
    Next
End Sub

Sub LoadGame(ByVal Filename As String, ByRef Board(,) As Char)
    Dim Row As Integer
    Dim Column As Integer
    Dim Line As String
    Using FileReader As StreamReader = New StreamReader(Filename)
        For Row = 0 To 9
            Line = FileReader.ReadLine()
            For Column = 0 To 9
                Board(Row, Column) = Line(Column)
            Next
        Next
    End Using
End Sub

Sub PlaceRandomShips(ByRef Board(,) As Char, ByVal Ships() As TShip)
    Dim Valid As Boolean
    Dim Row As Integer
    Dim Column As Integer
    Dim Orientation As Char
    Dim HorV As Integer
    For Each Ship In Ships
        Valid = False
        While Not Valid
            Row = Int(Rnd() * 10)
            Column = Int(Rnd() * 10)
            HorV = Int(Rnd() * 2)
            If HorV = 0 Then
                Orientation = "v"
            Else
                Orientation = "h"
            End If
            Valid = ValidateBoatPosition(Board, Ship, Row, Column, Orientation)
        End While
        Console.WriteLine("Computer placing the " & Ship.Name)
        PlaceShip(Board, Ship, Row, Column, Orientation)
    Next
End Sub

Sub PlaceShip(ByRef Board(,) As Char, ByVal Ship As TShip, ByVal Row As Integer, ByVal Column As Integer, ByVal Orientation As Char)
    Dim Scan As Integer
    If Orientation = "v" Then
        For Scan = 0 To Ship.Size - 1
            Board(Row + Scan, Column) = Ship.Name(0)
        Next
    ElseIf Orientation = "h" Then
        For Scan = 0 To Ship.Size - 1
            Board(Row, Column + Scan) = Ship.Name(0)
        Next
    End If
End Sub

Function ValidateBoatPosition(ByVal Board(,) As Char, ByVal Ship As TShip, ByVal Row As Integer, ByVal Column As Integer, ByVal Orientation As Char)
    Dim Scan As Integer
    If Orientation = "v" And Row + Ship.Size > 10 Then
        Return False
    ElseIf Orientation = "h" And Column + Ship.Size > 10 Then
        Return False
    Else
        If Orientation = "v" Then
            For Scan = 0 To Ship.Size - 1
                If Board(Row + Scan, Column) <> "-" Then
                    Return False
                End If
            Next
        ElseIf (Orientation = "h") Then
            For Scan = 0 To Ship.Size - 1
                If Board(Row, Column + Scan) <> "-" Then
                    Return False
                End If
            Next
        End If
    End If
    Return True
End Function

Function CheckWin(ByVal Board(,) As Char)
    Dim Row As Integer
    Dim Column As Integer
    For Row = 0 To 9
        For Column = 0 To 9
            If Board(Row, Column) = "A" Or Board(Row, Column) = "B" Or Board(Row, Column) = "S" Or Board(Row, Column) = "D" Or Board(Row, Column) = "P" Then
                Return False
            End If
        Next
    Next
    Return True
End Function

Sub PrintBoard(ByVal Board(,) As Char)
    Dim Row As Integer
    Dim Column As Integer
    Console.WriteLine()
    Console.WriteLine("The board looks like this: ")
    Console.WriteLine()
    Console.Write(" ")
    For Column = 0 To 9
        Console.Write(" " & Column & "  ")
    Next
    Console.WriteLine()
    For Row = 0 To 9
        Console.Write(Row & " ")
        For Column = 0 To 9
            If Board(Row, Column) = "-" Then
                Console.Write(" ")
            ElseIf Board(Row, Column) = "A" Or Board(Row, Column) = "B" Or Board(Row, Column) = "S" Or Board(Row, Column) = "D" Or Board(Row, Column) = "P" Then
                Console.Write(" ")
            Else
                Console.Write(Board(Row, Column))
            End If
            If Column <> 9 Then
                Console.Write(" | ")
            End If
        Next
        Console.WriteLine()
    Next
End Sub

Sub DisplayMenu()
    Console.WriteLine("MAIN MENU") ' Main Menu Screen that is displayed to the user
    Console.WriteLine()
    Console.WriteLine("1. Start new game")
    Console.WriteLine("2. Load training game")
    Console.WriteLine(" 3. Change game limit")
    Console.WriteLine("4. Load Saved Game")
    Console.WriteLine("9. Quit")
    Console.WriteLine()
End Sub
Function GetMainMenuChoice() ' Will check if the menu choice is picked can go through
    Dim Choice As Integer ' Dim choice as an integer
    Try
        Console.Write("Please enter your choice: ") ' Ask user to enter their choice for the menu option
        Choice = Console.ReadLine() ' User enters here
        Console.WriteLine()
        If Choice <> "1" And Choice <> "2" And Choice <> "9" And Choice <> "10" Then
            Console.WriteLine("ERROR: Invalid input!") ' If their choice doesnt fit 1, 2 or 9 then it says this message
        End If
        Return Choice ' Return the choice to another part of code
    Catch Ex As Exception
        Console.WriteLine("Please enter a valid input (1, 2,9 or 10)")
    End Try
End Function

Sub PlayGame(ByVal Board(,) As Char, ByVal Ships() As TShip)
    Dim GameWon As Boolean = False
    Dim score As Integer = 0
    Dim gamelimit As Integer = 50
    Do
        PrintBoard(Board)
        MakePlayerMove(Board, Ships)
        score = score + 1
        Console.WriteLine("You have taken {0} number of moves,", score)
        GameWon = CheckWin(Board)
        If GameWon Then
            Console.WriteLine("All ships sunk!")
            Console.WriteLine()
        End If
    Loop Until GameWon Or score = 50
    If score = 50 Then
        Console.WriteLine("You used all your moves up. Try again ")

    End If

End Sub
Sub SaveGame(ByRef Board(,) As Char)
    Dim SaveGameWrite As StreamWriter
    SaveGameWrite = New StreamWriter("TEST.txt", True)

    For x As Integer = 0 To 9
        For y As Integer = 0 To 9
            SaveGameWrite.Write(Board(x, y))
        Next
    Next
    SaveGameWrite.Close()
End Sub
Sub LoadSavedGame(ByVal Filename As String, ByRef Board(,) As Char)
    Dim Row, Column As Integer
    Dim Line As String

    Console.WriteLine("Load training game or open a saved game? T for training or S for saved")

    If Console.ReadLine = "" Then
        Console.WriteLine("Enter the filename: ")
        Filename = Console.ReadLine
    End If
    Using FileReader As StreamReader = New StreamReader("C:\" & Filename)
        For Row = 0 To 9
            Line = FileReader.ReadLine()
            For Column = 0 To 9
                Board(Row, Column) = Line(Column)
            Next
        Next
    End Using
End Sub
Sub SetUpShips(ByRef Ships() As TShip)
    Ships(0).Name = "Aircraft Carrier"
    Ships(0).Size = 5
    Ships(1).Name = "Battleship"
    Ships(1).Size = 4
    Ships(2).Name = "Submarine"
    Ships(2).Size = 3
    Ships(3).Name = "Destroyer"
    Ships(3).Size = 3
    Ships(4).Name = "Patrol Boat"
    Ships(4).Size = 2
End Sub

Sub Main()
    Dim Board(9, 9) As Char
    Dim Ships(4) As TShip
    Dim MenuOption As Integer
    Do
        SetUpBoard(Board)
        SetUpShips(Ships)
        DisplayMenu()
        MenuOption = GetMainMenuChoice()
        If MenuOption = 1 Then
            PlaceRandomShips(Board, Ships)
            PlayGame(Board, Ships)
        ElseIf MenuOption = 2 Then
            LoadGame(TrainingGame, Board)
            PlayGame(Board, Ships)
        ElseIf MenuOption = 3 Then
            PlaceRandomShips(Board, Ships)
            PlayGame(Board, Ships)
        End If
    Loop Until MenuOption = 9
End Sub

End Module

提前致谢，

score 1 · Accepted Answer

对于您的第一个代码片段，为什么要用 ASCII 来麻烦自己？它已经过时并且可以避免

    Dim validCol As Boolean = False
    Dim column As Integer
    While validCol = False
        Console.Write("Please enter column: ")
        Dim columnValue As String = Console.ReadLine

        If (Integer.TryParse(columnValue, column)) Then
            If column >= 0 AndAlso column < 10 Then
                validCol = True
            Else
                Console.WriteLine("Number must be between 0 and 9")
            End If
        Else
            Console.WriteLine("This is not a number.")
        End If
    End While

    'Do whatever with column

Integer.TryParse 将尝试将用户给出的字符串解析为整数，如果失败，您将得到“这不是数字”。消息，否则它将继续检查数字是否在您想要的范围内。

score 0 · Accepted Answer

您的保存游戏子没有指定路径

SaveGameWrite = New StreamWriter("TEST.txt", True)

而你的负载游戏确实

Using FileReader As StreamReader = New StreamReader("C:\" & Filename)

您的游戏很可能没有保存到 C:\ ，而是保存到项目文件夹中的目录。您应该指定 C:\ 的路径（将程序数据保存到驱动器的根目录是不好的）或将文件保存到Application.CommonAppDataPath- 所以代码中的两行现在将是 ..

SaveGameWrite = New StreamWriter(Application.CommonAppDataPath & "TEST.txt", True)

和

Using FileReader As StreamReader = New StreamReader(Application.CommonAppDataPath & Filename)

vb.net - AQA AS 考试级别 - COMP 1 VB

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