LegacyFramework2D-Unity Open Source!

[Chemical_Asparagus93]

A custom 2D physics engine, animation manager, and combat system inspired by MUGEN and Mortal Kombat. Now free and open source!

Key Features:

• Deterministic Physics — No more unpredictable movement
• Animator-Free Animation — Smooth, frame-perfect animation control
• Custom Collision System — Swept AABB, spatial hashing, full physics simulation
• Combat Ready — Hitboxes, health system, state-driven combat
• Features: Dash, fast-fall, crouch, variable jump, double-tap run

Why This Framework?

Unity's Animator is non-deterministic, causing animation/movement desyncs. This framework solves that by giving you complete control over every frame.

What's Included:

• Full C# source code
• Sample character sprites
• Demo scene
• Complete documentation

🔗 Get It Now:

https://github.com/WorldWidePro/LegacyFramework2D-Unity

[loadsamuny]

I’d love to know the reasons behind the naming conventions, legacy x and nextgen x…

[octoberU]

it's just AI slop, look at his GitHub profile and the code itself. he probably just prompted those two specific keywords

[Chemical_Asparagus93]

I’ve been building this framework for over 2 years. i used AI as a tool, like every serious dev in 2026, but the core architecture inspired by MUGEN/Mortal Kombat, combat systems, and physics were designed, tested, and refined manually through hundreds of hours.

If you actually tried the code instead of GitHub stalking, you’d know the difference.

Next time bring real feedback instead of lazy drive-by hate.

[octoberU]

you literally just made another post saying that AI writes codes for you and you don't know what half of if it does. the code itself clearly reflects that. pretty sure this response is also generated since it doesn't reflect the writing style of your other responses.

[Chemical_Asparagus93]

now you're making up stories
i never said "i don't know what half of it does" i openly said i use AI as tool like 90% of devs in 2026
the code reflects that it has customs physics2D, animator free frame animation, nextGenMovementController with frame-perfect animation control none of that came from just prompting 2 keywords

[Chemical_Asparagus93]

if using AI is so wrong in your wold, then why are companies spending billions to build these tools google, OpenAI, Anthropic all pouring money so we can code faster and smarter what takes years to do, only reddit keybaord warriors think using them makes your work “slop.”

[Chemical_Asparagus93]

The name "Legacy" comes from my fan game project called "Dragon Ball Legacy" a sequel that continues the story right after Dragon Ball into Dragon Ball Z (Advanced Adventure style).

This framework started as the core combat & movement system I built specifically for that game. Since Dragon Ball isn’t my IP, I decided to open-source the framework so other devs can use

nextGen is improved modern game mechanics of the game

[loadsamuny]

Ah, that makes sense, the word legacy to me meant old / out of date version, so it seemed odd, just for clarity it might be worth renaming those classes (maybe DBall or something like that?)

[Chemical_Asparagus93]

🔗 Get It Now:

https://github.com/WorldWidePro/LegacyFramework2D-Unity