Tracking: Mob AI

[Snowiiii]

Tracking: Mob AI

This issue tracks the implementation of the entity behavior system, focusing on the Vanilla GoalSelector logic and pathfinding navigation

Core Controllers

• Look Control (Head moving/Look at target)
• Navigation / Pathfinding (A* implementation)
• Jump Control
• Move Control (Velocity application toward path)

Movement Goals (Requires Navigation)

• MoveToBlockGoal
• RandomStrollGoal
• FollowParentGoal
• MeleeAttackGoal
• PanicGoal
• AvoidEntityGoal
• FollowOwnerGoal

Interaction & State Goals

• LookAtEntityGoal (Implemented via Head Moving)
• RandomLookAroundGoal (Implemented via Head Moving)
• EatBlockGoal
• TemptGoal
• BreedGoal
• BegGoal

Target Selectors

• NearestAttackableTargetGoal
• HurtByTargetGoal
• OwnerHurtTargetGoal

TODO

[lineality]

Question 1:
Are there recommended deobfuscation tools for this (pumpkin) project? (For deobfuscating official java minecraft for observations for Pumpkin MC.)

Question 2:
Is this (see link) happening, where some current java code is more directly available officially?
https://www.minecraft.net/en-us/article/removing-obfuscation-in-java-edition

Question: 3:
Is there any room for optimizing some operations as stack-based and avoiding heap?
(This maybe not first/early MVP)

Question 4:
Is there any room for optimizing some operations with naked-asm in Rust 2025?
https://blog.rust-lang.org/2025/07/03/stabilizing-naked-functions/
(This maybe not first/early MVP)

(This phase for Pumpkin MC is very exciting.)

[Snowiiii]

Question 1: Are there recommended deobfuscation tools for this (pumpkin) project? (For deobfuscating official java minecraft for observations for Pumpkin MC.)

Question 2: Is this (see link) happening, where some current java code is more directly available officially? https://www.minecraft.net/en-us/article/removing-obfuscation-in-java-edition

Question: 3: Is there any room for optimizing some operations as stack-based and avoiding heap? (This maybe not first/early MVP)

Question 4: Is there any room for optimizing some operations with naked-asm in Rust 2025? https://blog.rust-lang.org/2025/07/03/stabilizing-naked-functions/ (This maybe not first/early MVP)

(This phase for Pumpkin MC is very exciting.)

Hi, I don't think this is the best place/issue to ask this for but i'm still gonna answer your questions

1. I think yarn is currently the best option, you can learn more here https://docs.pumpkinmc.org/developer/contributing#decompiling-minecraft-s-code
2. Yes Minecraft recently removed obfuscation from latest build which is awesome
3. Yeah ofc, one thing would be to move all serde runtime parsing to compile time like i already did for most data
4. I don't think written asm by hand necessary results in better performance but in some places it may can

[illyrius666]

@Purdze isnt this finished? so it can be closed?

[GREGFIRE13]

So... why is this not ticked as "done" on the project page ?

[wendellmeset]

I believe this should be marked as done in the README.

[Q2297045667]

I believe this should be marked as done in the README.

The items listed above are merely pathfinding targets. However, the reality is that AI for many creatures is still incomplete. Checking this option in the README would likely cause confusion for users.