Rock, Paper, Scissors In PowerShell

Posted on by administrator

Another game today, I’ll be adding this to my big Games Project soon. Just need to implement it into the script.

First I started off by making the PowerShell window the correct size. I did this by adding:

$pshost = get-host
$pswindow = $pshost.ui.rawui
$newsize = $pswindow.buffersize
$newsize.height = 500
$newsize.width = 500
$pswindow.buffersize = $newsize
$newsize = $pswindow.windowsize
$newsize.height = 22
$newsize.width = 85
$pswindow.windowsize = $newsize
$pswindow.WindowTitle = "Rock, Paper, Scissors"

to the start of the function.

Next I created the meat of the game, here its just a simple do statement until either the score of the user or the score of the computer has reached or exceeded 3. Best of three sort of thing. Heres that part:

do {
 $options = @("Rock","Paper","Scissors")
 $option = $options | Get-Random -Count 1
 Clear-Host
 Write-Host "Your Score - $score" -ForegroundColor Green
 Write-Host "Computer's Score - $computerscore" -ForegroundColor Red
 do {$selection = Read-Host "Selection"}while (("Rock","Paper","Scissors") -notcontains $selection)
  if ($selection -eq "rock" -and $option -eq "paper"){
   Write-Host "You lose, the computer chose $option";
   Start-Sleep -Seconds 1
   $computerscore = $computerscore + 1
  }elseif($selection -eq "paper" -and $option -eq "scissors"){
   Write-Host "You lose, the computer chose $option"
   Start-Sleep -Seconds 1
   $computerscore = $computerscore + 1
  }elseif($selection -eq "scissors" -and $option -eq "rock"){
   write-host "You lose, the computer chose $option"
   Start-Sleep -Seconds 1
   $computerscore = $computerscore + 1
  }elseif ($selection -eq $option){
   Write-Host "Its a draw"
   Start-Sleep -Seconds 1
  }else{
   Write-Host "You won, the computer chose $option"
   Start-Sleep -Seconds 1
   $score = $score + 1
  }
 }until (($score -eq 3) -or ($computerscore -eq 3))
 if ($computerscore -gt $score){
  Clear-Host
  Write-Host "You lost, the computer scored $computerscore points whilst you only scored $score points" -ForegroundColor Red
 }else{
  Clear-Host
  Write-Host "You won, you got $score points. More than the computer's $computerscore" -ForegroundColor Green
 }
}

Finally, I ended the code of by showing the user who won and giving then the option to exit the game or play again. Here is the code for that:

do {$playagain = Read-Host "Do you want to play again? Y or N"} while (("Y","N") -notcontains $playagain)
if ($playagain -eq "y"){
 RPS
}elseif ($playagain -eq "n"){
 exit
}

===================================================================================================

Hopefully you can see how this all comes together. Here is the entire script for the game:

function RPS{
 $pshost = get-host
 $pswindow = $pshost.ui.rawui
 $newsize = $pswindow.buffersize
 $newsize.height = 500
 $newsize.width = 500
 $pswindow.buffersize = $newsize
 $newsize = $pswindow.windowsize
 $newsize.height = 22
 $newsize.width = 85
 $pswindow.windowsize = $newsize
 $pswindow.WindowTitle = "Rock, Paper, Scissors"

 [int]$score = 0
 [int]$computerscore = 0

 do {
  $options = @("Rock","Paper","Scissors")
  $option = $options | Get-Random -Count 1
  Clear-Host
  Write-Host "Your Score - $score" -ForegroundColor Green
  Write-Host "Computer's Score - $computerscore" -ForegroundColor Red
  do {$selection = Read-Host "Selection"}while (("Rock","Paper","Scissors") -notcontains $selection)
  if ($selection -eq "rock" -and $option -eq "paper"){
   Write-Host "You lose, the computer chose $option";
   Start-Sleep -Seconds 1
   $computerscore = $computerscore + 1
  }elseif($selection -eq "paper" -and $option -eq "scissors"){
   Write-Host "You lose, the computer chose $option"
   Start-Sleep -Seconds 1
   $computerscore = $computerscore + 1
  }elseif($selection -eq "scissors" -and $option -eq "rock"){
   write-host "You lose, the computer chose $option"
   Start-Sleep -Seconds 1
   $computerscore = $computerscore + 1
  }elseif ($selection -eq $option){
   Write-Host "Its a draw"
   Start-Sleep -Seconds 1
  }else{
   Write-Host "You won, the computer chose $option"
   Start-Sleep -Seconds 1
   $score = $score + 1
  }
 }until (($score -eq 3) -or ($computerscore -eq 3)) 
 if ($computerscore -gt $score){
  Clear-Host
  Write-Host "You lost, the computer scored $computerscore points whilst you only scored $score points" -ForegroundColor Red
 }else{
  Clear-Host
  Write-Host "You won, you got $score points. More than the computer's $computerscore" -ForegroundColor Green
 }

 do {$playagain = Read-Host "Do you want to play again? Y or N"} while (("Y","N") -notcontains $playagain)
 if ($playagain -eq "y"){
  RPS
 }elseif ($playagain -eq "n"){
  exit
 }
}

I was quite surprised at how short I got the script to be, I think I may try to make the Blackjake game shorter as, lets me honest. Its barbaric in its construction.

Leave a Reply