Minecraft Modding: Getting Set Up

Here's how you can get started modding Minecraft yourself!

Step 1:

Get Minecraft.  Yeah, I know, this is kind of self-explanatory, but, you'll need the minecraft.jar file in some of the next steps.

Step 2:

Get the MCP (the Minecraft Coder Pack).  Current releases are at http://mcp.ocean-labs.de/index.php/MCP_Releases .

Step 3:

Get the Java SDK at http://www.oracle.com/technetwork/java/javase/downloads/index.html .  You'll probably want Java SE.

Step 4:

Set up a system path.  For windows, go to Control Panel->System->Advanced System Settings->Environment Variables.  In User Variables, add the following path:

PATH%path%;C:\Program Files\Java\jdk1.6.0_21\bin

Please note that your path to the jdk may be different depending on your version of windows.

Step 5:

Extract the zip containing the MCP.

Step 6:

Get your minecraft.jar. To find it easily, open Run and type in %appdata%.  It should open up a folder containing lots of folders, one of them being ".minecraft".  Open that up and to go the bin folder.  Within (if you've played Minecraft before) should be minecraft.jar.

Step 7:

Copy that jar into the jars folder of your MCP folder.  As a side note, you can also copy the minecraft_server.jar if you have it.  It's available somewhere on the minecraft website.

Step 8:

Run decompile.bat in the MCP folder.

Step 9:

Have fun modifying the files in sources/minecraft folder!

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