How do I make a launcher?

[Raekye]

Hi, I'm trying to make my own Minecraft launcher. I've looked at resources like Magic Launcher, MultiMC, Sk's launcher, http://www.minecraftforge.net/forum/index.php/topic,1282.0.html, and http://www.minecraftforge.net/forum/index.php/topic,1464.0.html, etc. I really have no idea where to start.

 

1. What should my starting class be? A subclass of applet? From one of the posts it seems like something is happening in FML->relaunchApplet? If I set system property "minecraft.applet.WrapperClass" to my class, it craps out other classes? And in the other forum I (like the OP) don't get what the other members says by "Use minecraft.main"?

 

2. What's the proper way to "launch" the game? Like how should I call it so it doesn't mess up relaunchApplet?

 

I've been stuck on this for a week now, and finally decided to ask for help. There hasn't been much documentation as I expect, regular mods are much different than launchers.

 

If you must know what I'm making:

 

 

I'm trying to make a multimc-magiclauncher (in one, or wherever I get to). Obviously, it's been done, but the solution/implementation is really interesting to me, so I'm giving it a shot.

 

 

 

Thanks for any advice. Cheers,

Raekye

[keepcalm]

The method to call is net.minecraft.client.Minecraft.main, this might interest you if you're using java: https://github.com/Forkk/MultiMC4/blob/master/src/launcher/MultiMCLauncher.java

[Raekye]

Thanks, I'll check it out.

[Raekye]

Thanks, I'll check it out.

 

I get this error in 1.4.5

Client asked for parameter: server
Exception in thread "Minecraft main thread" java.lang.NoClassDefFoundError: org/
lwjgl/opengl/Display
        at net.minecraft.client.Minecraft.a(SourceFile:205)
        at net.minecraft.client.Minecraft.run(SourceFile:515)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.lwjgl.opengl.Display
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 3 more
Caused by: java.util.zip.ZipException: ZipFile closed
        at java.util.zip.ZipFile.ensureOpenOrZipException(Unknown Source)
        at java.util.zip.ZipFile.access$1300(Unknown Source)
        at java.util.zip.ZipFile$ZipFileInputStream.read(Unknown Source)
        at java.util.zip.ZipFile$ZipFileInflaterInputStream.fill(Unknown Source)

        at java.util.zip.InflaterInputStream.read(Unknown Source)
        at java.util.jar.JarVerifier$VerifierStream.read(Unknown Source)
        at sun.misc.Resource.getBytes(Unknown Source)
        at java.net.URLClassLoader.defineClass(Unknown Source)
        at java.net.URLClassLoader.access$100(Unknown Source)
        ... 9 more

[keepcalm]

You need to make sure that you're loading the LWJGL libraries as well - lwjgl.jar, lwjgl_util.jar and jinput.jar and setting property java.library.path to "minecraftdir/natives"