FullBelly - Comprehensive Action Hunger System

Introduction

FullBelly is a Minecraft NeoForge mod (1.21.1) that adds a comprehensive action-based hunger consumption system. The mod tracks various player behaviors and automatically deducts corresponding hunger, making survival mode more challenging.

Features

• Full Action Coverage: Tracks 24 different types of player behaviors
• Vanilla Compatible: Based on vanilla exhaustion mechanism, consistent with native behaviors like jumping
• Real-time Logging: Console outputs detailed consumption information (requires debug logging enabled)
• Server-side Processing: Executes only on server side, no impact on client performance

Action Types & Consumption Values

Movement (8 types)

Action Base Cost Description 🚶 Walking 0.01/tick Ground movement 🏃 Sprinting 0.1/tick Sprinting (vanilla standard) 🕵️ Sneaking 0.01/tick Crouching movement 🏊 Swimming 0.015/tick Water movement (vanilla standard) 🤿 Underwater Swimming 0.02/tick Holding breath (higher cost) 🧗 Climbing 0.05/tick Ladders/vines 🪽 Elytra Flight 0.08/tick Gliding 🐴 Vehicle Riding 0.01/tick Horses/boats/etc.

Instant Actions (3 types)

Action Base Cost Description ⬆️ Jumping 0.05/time Takeoff (vanilla standard) ⚔️ Melee Attack 0.01/time Hit entity 💥 Critical Hit 0.01/time Falling critical hit

Tool Behaviors (4 types)

Action Base Cost Description ⛏️ Mining 0.005/block Breaking blocks (lowest cost) 📦 Placing 0.01/time Placing blocks 🎣 Fishing Cast 0.01/time Casting fishing rod 🎣 Fishing Reel 0.01/time Reeling in

Combat Behaviors (8 types)

Action Base Cost Description 💔 Damage Taken 0.01/time Any damage source 🛡️ Block Success 0.01/time Shield successful block 🛡️ Shield Holding 0.01/tick Continuous shield holding 🏹 Bow Charging 0.01/tick Bow charging 🏹 Bow Shot 0.01/time Bow firing 🔫 Crossbow Load 0.01/tick Crossbow loading 🔫 Crossbow Fire 0.01/time Crossbow firing 🔱 Trident Charge 0.015/tick Trident charging 🔱 Trident Throw 0.03/time Trident throwing

Other (1 type)

Action Base Cost Description 💥 Fall Impact 0.01/time Landing from height

Usage Guide

Installation

1. Ensure NeoForge 21.1.227+ is installed (Minecraft 1.21.1)
2. Place fullbelly-1.0.1.jar into .minecraft/mods folder
3. Launch the game

Debug Mode

The mod includes a built-in debug mode that displays detailed exhaustion information in the chat box.

In-game Commands:

/fullbelly debug - Check current debug mode status /fullbelly debug true - Enable debug mode /fullbelly debug false - Disable debug mode

When enabled, you'll see messages like:

[FullBelly] 行走: -0.010 exhaustion | 饱食度: 20→20, 饱和度: 5.00→4.99 [FullBelly] 奔跑: -0.100 exhaustion | 饱食度: 20→19, 饱和度: 4.89→4.79 [FullBelly] 三叉戟投掷: -0.030 exhaustion | 饱食度: 19→19, 饱和度: 4.76→4.73

Configuration File: You can also edit .minecraft/config/fullbelly-common.toml:

debug_mode = true

Note: Debug mode is disabled by default for optimal performance.

Adjust Difficulty

Modify base values in FatigueProcessor.java:

• Lower values = Easy mode
• Higher values = Hard mode

Technical Implementation

Core Components

• ActionType: Enum defining 24 action types
• FatigueProcessor: Core processor, applies exhaustion to FoodData
• MovementHandler: Detects player movement using position tracking
• ExhaustionHandler: Captures block break/place events
• PlayerMixin: Detects various behaviors through Mixin injection

How It Works

1. Detect player behaviors through Mixin and event system
2. Call FatigueProcessor.dispatch() to process consumption
3. Apply consumption using vanilla FoodData.addExhaustion() method
4. When exhaustion accumulates to 4.0, automatically deducts 1 food point

Compatibility

• ✅ NeoForge 21.1.229
• ✅ Minecraft 1.21.1
• ✅ Runs on both server/client
• ✅ No conflicts with other mods

License

This project is open-sourced under the MIT License.

Version: 1.0.1
Minecraft: 1.21.1
NeoForge: 21.1.227+
Last Updated: 2026-05-14

Changelog

See CHANGELOG.md for detailed version history.