Strike Commander CD Missile Patch

# This PowerShell script patches Strike Commander's Strike.exe to fix an issue
# with missiles being ineffective, which is due to a high number of CPU cycles
# making enemy AI super quick with counter-measures. This avoids having to lower
# CPU cyles to mid-90s levels and put up with choppy performance.
#
# This applies to the CD-ROM Edition and any re-releases which use it, like GOG's.
#
# To run this, save it to a .ps1 file, right-click on it and choose Run with PowerShell.
#
# Credit for the patch goes to Harr-Nuta on the GOG forums:
# https://www.gog.com/forum/strike_commander/missile_gullibility/page1

# Define the folder browser window
Add-Type -AssemblyName System.Windows.Forms
$FolderBrowser = New-Object System.Windows.Forms.FolderBrowserDialog -Property @{
	Description = 'Select your Strike Commander folder (where Strike.exe is):'
	SelectedPath = 'C:\Games\Strike Commander’
	ShowNewFolderButton = $false
}

# Display the folder browser window
$result = $FolderBrowser.ShowDialog()
If ($result -eq "Cancel") {
	Exit
}

# Set variables
$game_folder = $FolderBrowser.SelectedPath
$game_exe = 'STRIKE.EXE'
$game_backup_exe = 'STRIKE_orig.EXE'

If (Test-Path $game_folder\$game_exe) {
	# Patch Strike.exe
	$data = Get-Content -Raw -Encoding Byte $game_folder\$game_exe
	rename-item -path $game_folder\$game_exe -newname $game_folder\$game_backup_exe
	$data[0xd4ad] = 235
	$data[0xd4ae] = 43
	Set-Content -Encoding Byte -Path $game_folder\$game_exe -Value $data

	# Display success message
	[void][System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
	[System.Windows.Forms.Messagebox]::Show("Strike.exe patched successfully!","Success")
}
Else {
	# Display error message
	[void][System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
	[System.Windows.Forms.Messagebox]::Show("Strike.exe does not exist. Aborting...","Error")
}