Windows - Detect Diablo 2 install directory if not installed in default directory

[Alexbeav]

Under Windows, the defaults.go file assumes that the game is installed in the default directory, 'C:\Program Files (x86)\Diablo II', with a hard coded MPQ location of:

(d2core\d2config\defaults.go, line 44)
config.MpqPath = "C:/Program Files/Diablo II"

If Diablo 2 is not installed in the above directory, the 'go run .' fails.

I believe the following solution could fix this:

`package main

import (
"fmt"
"log"

"golang.org/x/sys/windows/registry"

)

func main() {
k, err := registry.OpenKey(registry.LOCAL_MACHINE, SOFTWARE\WOW6432Node\Blizzard Entertainment\Diablo II, registry.QUERY_VALUE)
if err != nil {
log.Fatal(err)
}
s, _, err := k.GetStringValue("InstallPath")
if err != nil {
log.Fatal(err)
}
fmt.Printf("Diablo 2 is installed in: %q\n", s)
}`

I'm not a programmer, but I wrote this to return the D2 install directory by reading it from the appropriate registry file. I don't know how it could be formatted or implemented better, but that should take care of finding the location of the MPQ file.

I hope this is of use, thank you!

[willroberts]

As an alternative, I would support a flag to specify MPQ directory manually.

[EndlessEden]

Personally i agree with @willroberts - non-standard locations or backups of installs is a better choice, and it could be done in a platform agnostic way.

Honestly, i think looking for d2data.mpq at runtime, displaying a non_error "config" menu that would alter the MpqPath variable, think would be better.
This would resolve the issue on all platforms and give a starting spot for enabling/editing load-order from runtime in the future.

One of the most difficult things with the current situation is, editing the configuration can only be done from a text editor, and this should be undesirable for the end user experience.