Sledgehammer
Smashes the stupid out of the client & server
About this Mod
Sledgehammer utilises SpongePowered/Mixin to patch issues in Minecraft and Forge mods
Features
- Configurable
- Compatible with Forge, SpongeForge, and SpongeVanilla
Client Patches
- Fix BluSunrize/ImmersiveEngineering#3474
- Disable SearchTree reloading (Speeds up server connection process)
- Increase the maximum length for a WorldType name in SPacketJoinGame
Common Patches
- Prevent crashes due to invalid translation keys
- Make LazyLoad Thread-safe (Should fix MC-68381
- Server Patches
- Print a single message instead of a stacktrace for advancement errors
- Don't reload Advancements on World Load (Fixes Achievement issues on SkyFactory 4)
- Fix NullPointerException in BiomeProvider::findBiomePosition
- Prevent Grass turning into Dirt
- Prevent Ice turning into Water
- Prevent Totemic from changing the weather
- Chunk Saving
- Alert players when a chunk fails to save
- Remove all Entities and TileEntities from chunks that fail to save
- Remove all blacklisted items from chunks that fail to save
- Generate a crash report and safely stops the server if a chunk fails to save
- Reduce Network usage by postponing flush
- Fix SpongePowered/SpongeCommon#2013
- Redirect inventory debugging messages added by Sponge
- Fix MC-134716 - Player kick exploit
- Prevent or delete any items that attempt to teleport across dimensions
- Limit books to 50 pages with 255 characters for each
- Fix potential deadlock on shutdown
- Prevent ConcurrentModificationException in PlayerChunkMap
- Fix Item spawn packet exploit with ProjectRed
- Fix P3pp3rF1y/Reliquary#370
- Redirect Ruins debugging messages
- Fix Daveyx0/PrimitiveMobs#59 (Sponge only)
- Force permission check for OP based commands (Sponge only)
- Fix Misty World portal issues (Sponge only)
- Fix An-Sar/PrimalCore#210 (Fixed in 0.6.56 according to Dev) (Sponge only)
- Prevent movement outside of the world border (Sponge only)
- Prevent sending blank death messages (Sponge only)
Dependencies
The jar containing '-sponge' does not contain these dependencies as they are already present in a Sponge environment.
Available Versions
How to Install Sledgehammer on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.12.2).
Install Mod
Open the mod browser in the dashboard and search for "Sledgehammer". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.12.2
Server-side
~ OptionalRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Sledgehammer server crashes on startup – what to do?
Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.12.2). You can switch loaders with one click in the panel.
Is Sledgehammer compatible with forge and sponge?
Sledgehammer officially supports forge, sponge for Minecraft 1.12.2. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Sledgehammer – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Sledgehammer consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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