Talk:Minecraft Launcher

Shouldn't this wait a while?
Right now this is just a bunch of speculations, the only true information we have is that it logs you in (to the game, nothing was ever said about the site) and that it displays news. All of the other stuff isn't new, like the merchandise, the facebook page, that has all been there before just not on that page but on minecraft.net. The trivia is also kind of pointless. Why does it matter that it prevents one from opening multiple pages of the news feed? There wasn't a true news feed before so it was never an issue. Let's just wait for the facts. --Flippeh 04:42, 29 January 2011 (UTC)

Page needs update?
I think that the "Updated Launcher" section is out of date. Sakishrist 10:07, 27 August 2011 (UTC)

Launching minecraft.jar with C/C++
How can one launch minecraft.jar from C/C++ application? Any examples or keywords?

to launch the windows executable in c++: int main {   system("Minecraft.exe username password ip_address:port"); //system("Minecraft.exe notch notch's_password1234 192.168.0.1:25565"); return 0; }
 * 1) include

No longer possible to supply username and password via command line?
I tried following the instructions herein for logging in automatically (wanted to make a shortcut for each of my, my wife's, and my daughter's accounts) and none of it appears to work.

In January, [a StackOverflow answer](http://stackoverflow.com/questions/14531917/launch-minecraft-from-command-line-usename-and-password-as-prefix) indicated that this has been removed for security concerns. Should this page be updated to reflect that? Is anyone still successfully logging in with command-line options?

tgmayfield 21:33, 11 March 2013 (UTC)

version
This page doesn't tell how to choose what version you play on. Can someone explain this? --70.181.68.226 03:18, 17 May 2013 (UTC)


 * It seems you now need to use the profile editor. That will allow you to change versions, and will narrow the drop down list by quite a bit. Firebastard 19:41, 10 June 2013 (UTC)
 * Lol, thanks. I haven't looked back here since May 28, I think. --70.181.68.226 04:40, 23 June 2013 (UTC)

JVM exceptions
With the new launcher there is a feature to use JVM Arguments. I'm sure writing a section about this under the new 1.6 launcher would be useful. Of what I know it can allow the player to change the amount of ram allocated to Minecraft. --Nelsonngyn0 05:16, 7 July 2013 (UTC)

Variable for Launcher versions
I know we have a variable, v, for Minecraft versions, though I'm not sure if we have one for the new launcher versions. Information on this would be much appreciated! -- Bb 20   (Edits)  00:55, 28 July 2013 (UTC)


 * I'm not sure what you mean. Are you referring to Version? -- Orthotope talk 10:03, 28 July 2013 (UTC)


 * Yes, that would be part of it. AFAIS, launcher versions are being tracked per MC version, though I am unaware of any version template for these launcher versions. -- Bb 20   (Edits)  17:45, 28 July 2013 (UTC)

lastlogin is gone; now launcher_profiles.json
While reporting and troubleshooting an inability to log out recently, I discovered that the launcher no longer (as of fourth generation 1.2.1) uses the lastlogin file to look for authentication information. It now depends on whether you have one or more profiles. One profile, and you can log out. More than one profile, and you can always skip authentication. You also need to edit your profile to select other than "Close launcher when game starts" or you won't be able to log out even with a single profile. The replacement for the lastlogin file appears to be launcher_profiles.json as deleting that file reliably logs out the launcher (unfortunately, by deleting all of the profiles.) Individual profiles can only be deleted by selecting the "Edit Profiles" tab and right-clicking on a profile (Backspace and Delete do not work, and there is no Delete button on the Update Notes tab's Edit Profile dialogue.)  I'm going to delete the lastlogin reference after this experience. (I've also noted that lastlogin no longer appears on fresh installations of Minecraft.) When one has a single profile, the launcher does put the login information in launcher_profiles.json. I'm going to update the main page now that I've actually seen it in action. Featherwinglove 18:52, 3 September 2013 (UTC)
 * When updating the main page, I decided to test all launcher behaviours on the main page and found out that almost all of them were different. Dinnerbone added "READ_ME_I_AM_VERY_IMPORTANT" to the "assets" folder, which basically says you can't hack "assets" directly and to use Resource Packs (it says the launcher synchs "assets" every time it is run, which it apparently does with libraries as well.  Whether you can hack "assets" by firewalling the launcher and always playing offline, I don't know, but I also see no point, lol!)Featherwinglove 19:38, 3 September 2013 (UTC)