ER Core

ER Core

Added a stamina system, the TPA command, some useful items, and some bug fixes to Minecraft.

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forgeadventuregame-mechanicsutility
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About this Mod

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Discord GitHub Issues or Pull Requests GitHub Issues or Pull Requests

Introduction

Add minerals, materials, and useful features needed for technological development to the Evolution: Reset modpack.This mod mainly provides services for the modpack, but you can also freely add it to your game if you like some of its features. Utilities are enabled by default, but all items, blocks, fluids and other contents need to be enabled in the configuration file.

TPA Commands

Add commands for teleportation request and no permissions are required to use these commands. (support tab completion, cross dimension teleportation, notification sound and timeout) This is an image

Usage

  • /tpa
  • /tpahere
  • /tpaccept [player]
  • /tpadeny [player]

Endurance

Inspired by the StaminaPlus mod, each survival/adventure player has their own endurance level. This is an image Players will get hurt while doing strenuous exercise after exhaustion, like sprint, jump, etc. This can cause to death! This is an image

CraftTweaker

Add ZenExpansions for IPlayer. Developers can call this method on any IPlayer object, including its subtypes.

  • getEndurance(): returns player's endurance value as int.
  • addEndurance(int value): add or remove player's endurance value.
import crafttweaker.event.PlayerRightClickItemEvent;

events.onPlayerRightClickItem(function(event as PlayerRightClickItemEvent) {
    if(!event.world.isRemote() && event.item.definition.id == "minecraft:fishing_rod") {
        event.player.addEndurance(-1);
    }
});

This example script causes player to lose 1 endurance when using a fishing rod.

Feature

The compatibility of these features is unknown, and some features are designed specifically for the modpack described above. Configurations are already available for some features, which can be highly customizable. If you encounter any problems, please feel free to give feedback.

Replace The Products of Lava and Water

When lava and water meets, the original obsidian will be replaced with basalt blocks. Support custom products.

Default World Type

It's not really a change, but rather swapping the RTG world type with the default world type. Valid only when Realistic Terrain Generation and other fork version which has the same modid is installed.

No Infinite Fluids

All fluids in the game cannot create new fluid resources, but players can still bottle water with water.
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Regeneration

When the player uses an item, if the mod detects an increase in the player's maxhealth, it will give the Regeneration II buff for 10 seconds. Valid only when First Aid is installed at the same time, and can be turned off in the configuration file.

Resourcepack Auto Installation

Try installing resoucepacks and turn on automatically. Support custom configuration and options.txt!

Food Tooltip

Add a tooltip for foods, which can display food points as integers and saturation as percentages. This is an image

Replace Chest

Replace all naturally generated (not placed by player) chests in the world with loot chests in Lootr and regenerate loot.

Maxhealth Fix

This is a fix for First Aid. These issues arise when installing First Aid and other mods that have the ability to increase the player's maxhealth at the same time. This mod currently fixes an issue where players have less health when re-entering a world or returning to the Overworld from the End, and can not gain maxhealth when respawning.

Thirst Quencher Fix

A fix for Tough Expansion. When the thirst quencher transfers fluid to other storage tanks, it does not consume the fluid stored within itself, thereby producing infinite fluid. This fix prevents thirst quencher from transferring fluids to other storage tanks.

Content

All content is also designed for the above modpack, you can customize what should be added in the configuration file, and all content will not be added by default.

Ores

A total of four ores have been added, tin, copper, nickel and tungsten. All ores are only spawned in the Overworld. This is an image Except tungsten ore, the mod does not add ingots, nuggets and smelting recipes to other ores. Only some fluids have been added to the smelter recipe. However, all ores will spawn and drop in the world normally.

Blueprints

Blueprints are the tools needed to craft some items in the above modpack, and each blueprint has 10 durability. Mod doesn't add recipes to these blueprints, the textures come from the Artisan Worktables.

Ingot clay cast

Ingot clay cast is the clay version of ingot cast. Only bronze material can use this to make a bronze ingot. Use clay fluid and seared brick to craft it. Like other clay cast, use and craft it will consume the cast. Only added when Tinkers' Construct 2 is installed.

Tinker's material

A new tinker's material, Tungsten Steel, has been added, only when Tinkers' Construct 2 is installed. If you enable this, be sure to enable Items, Fluids, and Ores. This is an image

Herbs

The herb is a healing item, which is used in the same way as bandage and plaster in First Aid. Recover half a heart every 23 seconds, recover one heart in total. Only added when First Aid is installed at the same time. Note that this mod does not add any recipes to it.

About

This mod has been open source under the Apache License 2.0, you can use, modify, port and distribute this mod under the license. And there are currently no plans to make a mod like this for a new Minecraft version.

Available Versions

ER Core 1.3.0release
MC 1.12.2forge
June 19, 2026
ER Core 1.2.0release
MC 1.12.2forge
June 19, 2026
ER Core 1.1.0release
MC 1.12.2forge
June 19, 2026
ER Core 1.0.0release
MC 1.12.2forge
June 19, 2026

How to Install ER Core on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.12.2).

3

Install Mod

Open the mod browser in the dashboard and search for "ER Core". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

forge

Minecraft Versions

1.12.2

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

ER Core 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 ER Core compatible with forge?

ER Core officially supports forge for Minecraft 1.12.2. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with ER Core – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if ER Core 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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Recommended RAM
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Details

License
Apache License 2.0
Server-side
Required

Supported Versions

1.12.2