https://github.com/litetex-oss/mcm-rabbit-pathfinding-fix

Minecraft mod that fixes rabbit pathfinding efficiently
https://github.com/litetex-oss/mcm-rabbit-pathfinding-fix

fabric fix minecraft mod pathfinding rabbit

Last synced: 9 months ago
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Minecraft mod that fixes rabbit pathfinding efficiently

• Host: GitHub
• URL: https://github.com/litetex-oss/mcm-rabbit-pathfinding-fix
• Owner: litetex-oss
• License: apache-2.0
• Created: 2024-10-03T20:50:59.000Z (almost 2 years ago)
• Default Branch: dev
• Last Pushed: 2025-09-30T20:21:06.000Z (9 months ago)
• Last Synced: 2025-09-30T21:13:47.187Z (9 months ago)
• Topics: fabric, fix, minecraft, mod, pathfinding, rabbit
• Language: Java
• Homepage: https://modrinth.com/mod/rabbit-pathfinding-fix
• Size: 1.81 MB
• Stars: 2
• Watchers: 0
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE
  • Security: SECURITY.md

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[![Version](https://img.shields.io/modrinth/v/MCMPNRD8)](https://modrinth.com/mod/rabbit-pathfinding-fix)

[![Build](https://img.shields.io/github/actions/workflow/status/litetex-oss/mcm-rabbit-pathfinding-fix/check-build.yml?branch=dev)](https://github.com/litetex-oss/mcm-rabbit-pathfinding-fix/actions/workflows/check-build.yml?query=branch%3Adev)

# Rabbit Pathfinding Fixed

Fixes rabbit pathfinding efficiently.

As of 1.21.1 there are multiple problems with rabbit pathfinding:

### Basic pathfinding

1. The calculation of the jump height/velocity is incorrect and poorly implemented.
This results in too small jumps for climbing over a block.

2. Rabbits "stall" (no horizontal movement) during jumps - due to this they just jump upwards in the same place when trying to climb a block.
This behavior is caused by ``RabbitMoveControl`` which only sets the (horizontal) speed correctly during movement but not while jumping.

3. Rabbits are stuck / try to wander around forever.

   * The root cause is that ``EntityNavigation`` sets its timeouts based on movement speed.
If the movement speed is 0 (this is the case when a rabbit/mob is "stuck"), the timeout is also 0... and if the timeout is 0 it's ignored and therefore it's executed forever (or until interrupted by something external like another goal).

   * Rabbits only have a single goal when idle: ``WanderAround(Far)``. Most other entities also use ``LookAroundGoal``.
 Thus the above mentioned infinite navigation is never stopped in favor of executing another goal like in most other mobs.

   * ``RabbitMoveControl#tick`` constantly updates the rabbits speed (``RabbitEntity#setSpeed``).
 While doing this it also indirectly executes ``moveControl#moveTo`` thus the rabbit always tries to reach it's last target even when it shouldn't do that.

> [!NOTE]

> As of ``1.21.4/24w46a`` [MC-150224](https://bugs.mojang.com/browse/MC-150224) was fixed, correcting the jump height (1) and fixing the stall (2).


> However all other parts - including optimizations and sanity checks in above mentioned fixes - are still missing.

### Eating carrot crops

1. Rabbits can't reach the crops and always stop one block short of them.
This is due to selecting the incorrect distance from the crop block (it's ``1`` but should be ``0``).

2. Rabbits eat the crop instantly even while still jumping and being in the air.

3. The goal/behavior is immediately aborted (after a few ticks - when a target crop block was selected) due to incorrect implementation of ``shouldContinue`` and ``isTargetPos`` methods.

Detailed [video comparisons](https://litetex-oss.github.io/mcm-rabbit-pathfinding-fix/assets/comparison) are also available.

## Installation

[Installation guide for the latest release](https://github.com/litetex-oss/mcm-rabbit-pathfinding-fix/releases/latest#Installation)

### Usage in other mods

Add the following to ``build.gradle``:

```groovy

dependencies {

    modImplementation 'net.litetex.mcm:rabbit-pathfinding-fix:'

    // Further documentation: https://wiki.fabricmc.net/documentation:fabric_loom

}

```

> [!NOTE]

> The contents are hosted on [Maven Central](https://repo.maven.apache.org/maven2/net/litetex/mcm/). You shouldn't have to change anything as this is the default maven repo.


> If this somehow shouldn't work you can also try [Modrinth Maven](https://support.modrinth.com/en/articles/8801191-modrinth-maven).

## Contributing

See the [contributing guide](./CONTRIBUTING.md) for detailed instructions on how to get started with our project.