pcsx-redux VS cyclone-physics

PSn00bSDK maintainer here. Unfortunately the project cannot really be considered clean room; the original versions of most libraries contained code that was either lifted straight from Psy-Q disassemblies or heavily inspired by them. I have since rewritten pretty much all of it (with the exception of the GTE library which still has some Sony code) using only Psy-Q API documentation as a reference, but the "ship of Theseus" nature of the rewrite makes it hard to argue that it is a clean and legally safe project.

On the flip side, there are plenty of other open source PS1 SDK options that have been written from scratch, do not reimplement the same API as Psy-Q and can thus be considered clean for the most part. Here's a few of them:

- https://github.com/grumpycoders/pcsx-redux/tree/main/src/mip...

- https://github.com/ChenThread/candyk-psx

- https://github.com/cuckydev/CKSDK

- https://github.com/spicyjpeg/ps1-bare-metal (shameless plug)

Sony must license that out as well (or a non-Sony FOSS BIOS like OpenBIOS is used) as even on Steam there are a handful of emulated PS1 titles, I'm sure there are games on non-Sony consoles that use PS1 emulation as well but I'd have to research to find some.

That's just a reality of PS1 emulation, you need a BIOS. Duckstation is actually one of the easiest emulators to set up and still my #1 recommendation for PS1. If you don't want to set up a BIOS, you could try PCSX-Redux which has a simulated BIOS built in.

You can also use https://github.com/grumpycoders/pcsx-redux/tree/main/src/mips/psyqo

try here: https://github.com/grumpycoders/pcsx-redux

The PSX OpenBios is still a work in progress, but it already boots a great part of the console's library. Check it out!

I am thinking of porting cyclone physics engine (https://github.com/idmillington/cyclone-physics) from the textbook Game Physics Engine Design to PSX as a term project for one of the graduate courses I take, taking on the processing power and memory limitations as challenge. Would it be too difficult to accomplish this in 2 months for me with no prior PSX homebrew experience? I am a CS graduate with some amount of embedded systems experience.

I couldn't end up figuring out how to get the proper collision response worked, so I used the collision response from Ian Millingtons Game Physics book. The whole example is pretty concise so I hope others will find it useful if they want to learn how SAT collision and response works. Source code: https://github.com/jackw1111/dice-roll-physics-opengl

For example. Let’s see a piece of code about physics engine.

(actually should be No.3) If I'm completely fine with compiling header every time (like a vector3 class in physics engine (should be compiled every time anyway(example))