Jump to content
Search In
  • More options...
Find results that contain...
Find results in...

Keeping minecraft.mappings up to date with new versions of Forge Mdk


Recommended Posts

The recommended 1.12.2 - and even the current latest version 1.12.2 - has a minecraft.mappings set to snapshot_20171003 in the build.gradle file ... which is pretty old and from what I understand (correct me if I'm wrong :D) might not match the actual Minecraft version 1.12.2 the Forge version is targeting.


I ran across this when I started out writing my mod on and locally it was all fine and working since the decomp workspace provides the Minecraft source according to the mapping but when I built the jar and tried to run it on the Minecraft launcher for that Forge version I ran into the following exception:


Caused by: java.lang.NoSuchMethodError: com.modalstudio.mctribes.item.ItemBlueprint.setUnlocalizedName(Ljava/lang/String;)Lnet/minecraft/item/Item;


snapshot_20171003 was hip for Minecraft 1.12.0 source but 1.12.2 has removed that method in favor of setTranslationKey. Moving to stable_39 solved the case for me but it took me a while to figure out why upgrading to the latest Forge version didn't affect the issue at all - because I assumed that mappings are something you're keeping up to date and I wouldn't have to worry about :D So if at all possible I'd like to suggest modifying your build process to keep that minecraft.mappings up to date.

Link to comment
Share on other sites

1 hour ago, loordgek said:

how did you build your mod ?


Tried ./gradlew clean build on the following docker images: openjdk:8-jdk-slim, java:8 and atlassian/default-image:latest (java-8-openjdk-amd64), and the same on my local machine (jdk1.8.0_162). Cleared the workspace between switching the different Forge versions and reran setup steps described in the README. NoSuchMethodError persisted in launcher until I moved the mappings to stable_39.

Link to comment
Share on other sites

You can update the MDK's mapping version yourself. The one Forge uses is just the default that Forge was built with.

We usually don't update it on Forge's end because it's a useless change that really doesn't effect end users.

At the end of the day, mods get reobfed to SRG names. Which are stable and unique. If you're getting the NoSuchMethodException, then you're not building your mod correctly.

The mappings are PURELY for dev time.


So... No... Update it yourself.

I do Forge for free, however the servers to run it arn't free, so anything is appreciated.
Patreon: http://www.patreon.com/lexmanos
Paypal: http://paypal.me/LexManos

BitCoin: 1Q8rWvUNMM2T1ZfDaFeeYQyVXtYoeT6tTn

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing

    No registered users viewing this page.

  • Posts

    • Please stop capitalizing every word... You need to call NetworkHooks.openGui on the server to open your GUI. You also need to register your ScreenFactory on the client.
    • 1.12 is no longer supported on this forum. Please update to a modern version of Minecraft to receive support.
    • Server Version: 1.17.1 Server IP: enhanced.snorkycraft.com Discord:http://discord.snorkycraft.com/ Snorky Craft World is a playground I have designed for myself and friends to enjoy minecraft, with just some difficult enhancing and extra Contents, i'm an active player on my own server, grinding side by side with players. I do have a TLDR down at the bottom, if you're too lazy to read ;P. Showcase:https://www.youtube.com/watch?v=is7JoucsK0s A short 6 minutes video we have showcasing someone fun time in 2 lairs! a mini-world boss and a world boss. Things we have! ● KeepInvetory - You keep inventory but whenever you die, all your tools and armours lose durability. ● GriefPrevention - Well just your good ol' land claiming area to protect base from griefers ● mcMMO - Well, most of you might know what plugin is this, it's the kind of plugin that help you grow stronger the more you play! ● EliteMobs - Enhancing the mobs around you the more stronger you grow! and also allowing us to replace, create contents for you to enjoy! ● PlaytimeRewards Some Fun Features! Ridable Certain Animals, 6-Rows Enderchest!, Bonus ClaimBlocks, and a very spicy rank! ● Some Funzies Feautures: Editable armor stands! want to decorate your home and make it more lovely? you can with editable armorstands!, 6-Rows barrels! just some extra storage for your home! ● Some...lore related features: Some kind of strange disease have infected the cows... they attack!, Chicken are very feisty! Gameplay Changes ● Disabled Spawners AI, what's the point of spawners, they just ruins the game and there's nothing fun about it, also spawners aren't very useful in my server due to how it's setup. ● Removed The End world exploration! replaced it with the final boss stage for a very long grinding journey, one of our grinder has exactly 60+ Hours of playtime and he only reached Prestige 2! there are 10 Prestiges in total in order to have the power to defeat the new Ender Dragon Boss ● Progression changes, The end goal is not just getting to the ender dragon, is ranking up a custom rank system and farming custom items in order to grow stronger, strong enough to challenge very hard bosses! ● Monsters grows stronger the better equipped you are! and the more stronger you grow they harder challenges/dungeons/lairs you can fight! TLDR: You Join, You Lookaround, You Mine, You Build a House, You farm and gear up, Realized Diamond gearset or netherite gearset full set is so weak!, you start to farm small low level dungeons, you gain great gear, you defeat low level boss, you rankup, you get stronger gear, you repeat this progress so many times you have to prestiges too!, it's pretty fun! i been grinding 10-12 hours a day because once you get going it's very enjoyable.
    • The inputs are just a template- in this case it's two strings, but they can be ints, chars, etc. or none at all, depending if you need to initially send info across sides. I'd suggest reading Forge's documentation on packets first if you haven't used them before:  Forge Docs Networking You usually send the packet by invoking handler methods: ModPacketHandler.sendToServer(new C2SPacketForContainer(input1, input2)); Where the handler class has packet registration and the methods: The register methods are called in common setup.
    • Yeah the VillagerUtil was used in conjunction with the POI Forge registry, but you're right it's superfluous and I should stick with the simpler way. Thank you Ash
  • Topics

  • Who's Online (See full list)

  • Create New...

Important Information

By using this site, you agree to our Privacy Policy.