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The Legend of Zelda: Ocarina of Time has been fully decompiled, with a PC port out now! (www.pcgamer.com)

submitted 2 years ago* (last edited 2 years ago) by [email protected] to c/[email protected]

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What an incredible effort by these people! I personally can't wait until someone mods in 60fps (which is confirmed to be in the works). This really is a dream come true.

GitHub here: https://github.com/zeldaret/oot

As for where to get the PC build directly, I guess you'll have to 🏴‍☠️

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[–] [email protected] 5 points 2 years ago (2 children)

How does one decompile a game?

[–] [email protected] 7 points 2 years ago

It's a long grueling process of reverse-engineering. I don't know the details, but from what I know you can see the values of things and how they work from the outside, then they figure out what each value is and then re-implement it by trying to rewrite the source code. The github says this:

This is a WIP decompilation of The Legend of Zelda: Ocarina of Time. The purpose of the project is to recreate a source code base for the game from scratch, using information found inside the game along with static and/or dynamic analysis.

[–] [email protected] 3 points 2 years ago

Not an expert, but from my understanding of how this worked for the Mario 64 project:

Take the ROM and run it through a disassembler.
Rewrite (by hand) the assembly in C, one function at a time, with the goal of producing a bit-for-bit identical instructions when compiled using the same tool chain as was used by the Nintendo devs back in the day.
Since you now have a reconstructed version of the C source code, you can easily do with it what you can do with any C codebase, like port it to PC or add features, that would be difficult or impossible to do with the MIPS assembly.