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81 lines
4.4 KiB
Markdown
81 lines
4.4 KiB
Markdown
## MCP-Reborn [](https://github.com/Hexeption/MCP-Reborn/actions?workflow=Java+CI)
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#### MCP-Reborn is an MCP (Mod Coder Pack) for minecraft for making modded clients for minecraft and researching its code. It is based on MCPConfig and ForgeGradle by MinecraftForge Team.
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### :warning: WARNING :warning:: You **CANNOT** publish any code generated by this tool.
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### Supported versions:
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1.13->1.20.1
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### Important
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1.17< Needs JDK 16
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1.18> Needs JDK 17
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### How to use
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1. Import the build.gradle in Intellij.
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2. Run the Gradle "setup" task in the mcp folder in IntelliJ - you may need to select View > Tool Windows > Gradle to get this option.
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<img width="284" alt="373de4ebc77d5079584370dd7fbe8745" src="https://user-images.githubusercontent.com/4052647/46925924-71b7b680-d026-11e8-9c29-e3ed2e43f810.png">
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This will generate the decompiled source code, which you can now find in the "src" folder in the project.
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3. Modify the source code as you please.
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4. To test your modified code, go back to the Gradle tasks list (where you ran setup), and run the "runclient" task.
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This will compile your new, modified game and run it, to allow you to test.<br>**Note: You can also run the autogenerated run configuration 'Minecraft'**
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5. Once you have reached a final result you are happy with, there is a bit of a process to turn it into a JAR file that
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can actually run from the game launcher. Go to the "build" folder in the Gradle tasks, and run the "build" task. This
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will generate the new executable JAR file in the "build/libs/" directory.
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<img width="266" alt="a647ab0eb336062ffd80c8e053e10266" src="https://user-images.githubusercontent.com/4052647/46925963-a297eb80-d026-11e8-8b02-cb621b559511.png">
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6. With that JAR generated, open your Minecraft versions folder. On Linux, this defaults to `~/.minecraft/versions`. On
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Windows, it's in `AppData/Roaming/.minecraft/versions`. Find the variant your modded version is based on (that is, if
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you modded 1.16.4, find the 1.16.4 folder). Duplicate that folder, and rename it. For me, I was modifying villagers so
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I called it "1.16.4_villager_mod".
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7. Go into that folder and delete the original Minecraft JAR file. Then, rename the JSON file to be identical to the
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folder name. For me, that made it "1.16.4_villager_mod.json".
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8. Using a text editor, find the first instance of "downloads": This tells Minecraft where to obtain the game JAR file.
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If you leave this in, Minecraft will automatically download the vanilla JAR. But we want to run your new modded JAR.
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So delete everything from that "downloads": through the client, server, and server_mappings headers, which finally end
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in `/server.txt"}},`. Once you remove that, this section should hold `"assets": "1.16", "complianceLevel": 1, "id": "1.16.4"`.
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The last thing we need to do in this JSON file is to change that ID field to match the name of the folder and the
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JSON file. So in this case, we want `"id":"1.16.4_villager_mod"`.
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9. Now, take your new JAR file from the build/libs/ directory, and copy it into this same version folder, and, for the
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final time, rename it to the new name we've been using - 1.16.4_villager_mod.jar.
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10. Using an archive manager (Ubuntu comes with one built in; Windows users can download 7-Zip), open the base version's
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JAR file (in this case, 1.16.4.jar, which you'll find in its folder), and your JAR file. You'll need to copy 4
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files/folders from the base JAR into your new one.
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1. The folder "assets"
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2. The folder "data"
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3. The file "pack.png"
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4. The file "pack.mcmeta"
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11. Finally, still in that archive manager, delete the META-INF folder from your new JAR.
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12. Your files should all be configured now. In the Minecraft launcher (close and reopen it if it's already open), go to
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"Installations" in the upper left, and then create a new installation. Name it whatever you want. For the version, select
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the version you made (1.16.4_villager_mod.jar). Create it, then go back to the launcher home screen by clicking "Play" in
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the upper left. In the lower left, select your new custom version, and hit the big green "Play" button.
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### How to add Optifine
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[](https://www.youtube.com/watch?v=ocz1tPI_YSE "How to add Optifine to MCP Reborn")
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### Creators:
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* Hexeption
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* kingdevnl
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#### Special thanks to: **MinecraftForge** Team who made this tool possible. ❤
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