Rohosen Bhattacharya

Building for fun | | Founding Engineer @ Periskope | Senior Engineer @ Fireflies AI

[Rohosen Bhattacharya @Rohosen_]

@nicforey nvm got it
https://t.co/16vag7hkN8

[nico @nicforey]

@peterepetepeter It's just some pitched sine & square waves I added with web audio!

[Rohosen Bhattacharya @Rohosen_]

@nicforey what did you use to generate these sounds? asking for my project

[Rohosen Bhattacharya @Rohosen_]

🫪🫪🫪

[nico @nicforey]

Moving mountains!

[Rohosen Bhattacharya @Rohosen_]

@zzzzshawn I agree. dithering/halftones should take over gradients.

[Rohosen Bhattacharya @Rohosen_]

@theantijobboard I agree, ridiculously gamifying your product is the way to stand out and get traction in 2026

[Rohosen Bhattacharya @Rohosen_]

Fuck gradients and smooth animations, I'm gonna make the whole internet look like the 1980s

[Rohosen Bhattacharya @Rohosen_]

Today's lesson: State Machines and TLA+

[Rohosen Bhattacharya @Rohosen_]

TLA+ was my missing piece

[lauren @poteto]

trivia:

• started working on the game as a side project 4 days ago, landing ~1,150 PRs
• every time i found an issue in the code i asked bot to make a lint rule against it
• used TLA+ heavily to find bugs in the game's various state machines: the story, cutscenes, the game's systems. there are many formal verification skills, one for each major system
• i put context into the filepaths: code that runs every frame or every tick gets a .hot.ts extension, and a lint rule bans allocating in it (no object literals, closures, new, etc.), so the game loop creates almost no garbage and GC doesn't cause stutters
• game engine is mostly custom. three.js draws the 3D scene, but the simulation, post-processing and audio are all ours
• the simulation is fully deterministic, so every run replays exactly from its inputs. when you post a high score, the server replays your whole run to check it isn't cheated
• we generate dynamic og:images for every run based on your final stats, and it's all localized too! the game supports 10 languages
• my favorite feature: the music seamlessly transitions into different music for the various biomes, continuing the previous melody
• no audio files. all the music and sound effects are synthesized live in the browser by a custom Game Boy-style chip (two pulse voices, a wave voice, noise) plus a synthwave layer. the songs are written as text in code
• all the pixel art is code. every sprite is a file drawn with one shared palette and packed into a sprite atlas at build time
• it runs inside an X post, from the 245px card up to full screen. the bar is 60 fps with 500 enemies on a mid-range phone
• the build fails if the first download goes over budget. it's about 124 KB gzipped right now
• bots play the game headless to tune each difficulty against target survival rates
• comments are banned by a lint rule. if code needs explaining, the fix is a better name or a test

[Rohosen Bhattacharya @Rohosen_]

Making a Claude plugin that teaches you stuff and builds you a library as you go along.

[Rohosen Bhattacharya @Rohosen_]

Redid mine

https://t.co/pMYl1Z4D1k

[Zara Zhang @zarazhangrui]

Your personal website is the new resume

[Rohosen Bhattacharya @Rohosen_]

@victorjack__ I guess audio in the web is making a major comeback.

[Rohosen Bhattacharya @Rohosen_]

@exe_nf Yeah thats what Claude likes to do by default. But i might just lean into it in a way and bring back the old Apple books vibe 🤷🏻

[Rohosen Bhattacharya @Rohosen_]

Kinda notes claude is making for me lately

[Rohosen Bhattacharya @Rohosen_]

Today I spent a lot of time refining our admin portal. I probably haven't shared this before but https://t.co/YpguK8fv8g doesn't run on Shopify. I made the entire service myself and self-hosted it for the same cost as the Shopify subscription but with 10x more control. Really the era of personal software.

Having our own backend unlocks some crazy potential. I can treat the storefront like a real walk-in store. Every rack is customisable, every click is trackable. I can decide when a customer sees a particular item. I can even decide which combination of clicks unlocks a certain discount.

It's become quite a project for me to optimize conversions. For a small business, we can only spend so much on ads. So two things are really important to me:
1. Making products that people actually want
2. Make a store where people love to shop

[Rohosen Bhattacharya @Rohosen_]

@tarang8811 Makes sense. GGWP man

[Office Paglu @OfficePaglu]

Ooga booga mode.

[Rohosen Bhattacharya @Rohosen_]

@tanishqk Love it! Trying it out immediately

[Office Paglu @OfficePaglu]

🫪🫪🫪

[Rohosen Bhattacharya @Rohosen_]

I’ve never paid good attention to tests but they have become a mandatory part of even the smallest repos I create these days.

Building is so much faster if you invest in writing tests. What a weird time. Anybody else doing this?