ChatCalc Port for (NeoForge 1.21.10)

A Minecraft mod that enables mathematical calculations directly in the chat input field.

Overview

ChatCalc NeoForge is a port of the original ChatCalc Fabric mod to NeoForge for Minecraft 1.21.10. This mod allows you to perform mathematical calculations, define custom functions and constants, and execute various mathematical operations without leaving the chat interface.

Features

• In-Chat Calculations: Type mathematical expressions in chat and press TAB to evaluate them
• Live Preview: See calculation results in a tooltip above the chat input as you type
• Custom Functions: Define and use custom mathematical functions with parameters
• Custom Constants: Create named constants for frequently used values
• Function Management: List, view, and copy custom functions and constants
• Click to Copy: Click on function/constant listings to copy them to clipboard
• Extensive Math Support:
  • Basic operations: +, -, *, /, ^, %
  • Trigonometric functions: sin, cos, tan, asin, acos, atan
  • Logarithmic functions: log, ln
  • Other: sqrt, abs, floor, ceil, round, min, max
  • Summations and products
  • And more!

Usage

Basic Calculations

1. Open chat (default: T key)
2. Type a mathematical expression (e.g., 2+2, sin(pi/2), sqrt(16))
3. Press TAB to evaluate and replace with result

Custom Functions

Define a custom function:

myFunc(x;y) = x^2 + y^2

Use it:

myFunc(3;4)  // TAB -> 25

Custom Constants

Define a constant:

myConst = 42

Use it:

myConst * 2  // TAB -> 84

Commands

• functions? - List all custom functions (click to copy)
• constants? - List all custom constants (click to copy)
• config? or cfg? or ? - Show configuration help
• testcases? - Run internal test cases

Configuration

The mod creates a chatcal.json file in your Minecraft config directory where you can:

• Set decimal format precision
• Toggle radians/degrees mode
• Configure display options
• Manage saved functions and constants

Installation

1. Install NeoForge for Minecraft 1.21.10
2. Download the ChatCalc NeoForge mod JAR from releases
3. Place the JAR file in your mods folder
4. Launch Minecraft

Building from Source

./gradlew build

The built JAR will be in build/libs/

Credits

• Original Mod: ChatCalc by RealRTTV
• NeoForge Port: Smallinger
• Minecraft Version: 1.21.10
• NeoForge Version: 21.10.49-beta

License

This project is licensed under the Mozilla Public License Version 2.0 (MPL-2.0).

See the LICENSE file for the full license text.

What this means:

• ✅ You can use this mod freely (including commercially)
• ✅ You can modify and distribute modified versions
• ✅ You must keep the license notices and make source code available
• ✅ Changes must be documented

For more details, see NOTICE.md for copyright attributions.

Support My Work

If you like what I do, consider supporting me:

Differences from Fabric Version

This NeoForge port maintains feature parity with the original Fabric mod while adapting to NeoForge-specific APIs:

• Updated to Minecraft 1.21.10 API changes
• Adapted Mixin implementations for NeoForge
• Updated Component/Chat API usage
• Modified ClickEvent/HoverEvent implementations for new interface-based system

Support

For issues specific to this NeoForge port, please open an issue on this repository. For general ChatCalc questions, refer to the original mod's documentation.