AQA AS Level Problems - VB - Comp 1 - vb.net

Question

I seem to be having trouble with my program working and I am finding it hard to understand what I have done wrong, first of all I need a simple ( not really complicated) way of checking that the user cannot enter a string or a number over the requested amount (which currently is 1- 9 for menu options and 10 for a save option - which I need to do later) The code below is the code for the number and string checker relating to the menu and the code below the line is the whole code.
I have tried doing this but it just loops when you enter it for the row and lets you through whatever number you enter on the column. I need help also on other question relating to this like
Telling the user what ship they have hit,
Saving and Loading the game
And a score counter - I had this working then it got deleted when trying to fix first question
And a limit on the amount of goes they can have.
I will upload the code required tomorrow as cannot now, But if anybody has access to the AQA As Level free pseudocode that they give you - (its not illegal ! ) Please help me !
Sub GetRowColumn(ByRef Row As Integer, ByRef Column As Integer) ' Asks the user about where they want to go in the code
Console.WriteLine()
Dim checkcol, checkrow As String ' Defining the variables that I will user later
Dim AscCol, AscRow As Integer
Console.Write("Please enter a column:") ' Asks users to enter a column
checkcol = Console.ReadLine()
AscCol = Asc(checkcol(0)) ' It will check it on the ASCII scale to see if it isnt a letter
While AscCol > 57 Or AscCol < 48 ' If it doesnt fit in here, it is not one of the alloacated numbers
Console.WriteLine("This is not a number.")
Console.Write("Please enter a column")
checkcol = Console.ReadLine() ' Does the same for checkcol
AscCol = Asc(checkcol(0))
End While
checkcol = ((Chr(AscCol)))
Column = CInt(checkcol)
Console.WriteLine() ' This is a printed space for spacing when printed as a code
Do
If Column < 0 Or Column > 9 Then ' Now if it fits the column alloation e.g. 1 to 9 it will be allowed through
Console.WriteLine()
Console.WriteLine(" That is an invalid Input") ' Tell the user that they cannot go through as it doesn't fit the right requrirments
Column = Console.ReadLine()
End If
Console.WriteLine()
Loop Until Column < 10 And Column >= 0 ' This part of the code will run until their answer is under 10 and over 0
Console.Write("Please enter a row:") ' Here is same for rows as it is for columns
checkrow = Console.ReadLine()
AscRow = Asc(checkrow(0))
While AscRow > 57 Or AscRow < 48
Console.WriteLine("This is not a number.")
Console.Write("Please enter a row")
AscRow = Asc(checkrow(0))
End While
Row = CInt(checkrow)
Do
If Row < 0 Or Row > 9 Then
Console.WriteLine()
Console.WriteLine("That is an invalid Input.")
End If
Console.WriteLine()
Loop Until Row < 10 And Row >= 0
End Sub
Other code
'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 earlier
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
Thanks in advance,
The Scottish Warrior