A common lisp (sbcl) roguelike, to (re)learn Emacs and CL for fun. Using croatoan for ncurses, though if I had found BearLibTerminal earlier I might have used that.
Ask HN: What are you working on? (October 2025)
711–720 of 1001 posts
Re: Ask HN: What are you working on? (October 2025)
#712I’m building a small side project called https://www.localgeoguessr.com/ — a fun geography game that tests how well you know your local area. It’s still in a very early stage, not polished yet, but it’s somewhat playable. The idea is to eventually add more categories like “restaurants,” “theaters,” “roads,” etc., so you can play based on local themes. I’d love to hear your thoughts - any feedback on what you’d like t…
I laughed at the "do you even live here?"
Re: Ask HN: What are you working on? (October 2025)
#713I’m writing my own internal combustion engine simulator with some applied CFD. Nothing public yet but the sound is nice in my opinion: https://glouw.com/2025/10/12/Ensim4.html
The demo with an inline 8 at 16000 RPM is hard to judge, because I've never heard such an engine IRL. Might I suggest adding demos of engines people know the sound of?
FWIW, that sounds exactly like how I'd imagine a 1.5L I-8 would sound on an equally imaginary test stand. Like a slightly throatier dentist drill.
What a neat tool!
Re: Ask HN: What are you working on? (October 2025)
#714I'm currently building my own coding agent, VT Code. VT Code is a Rust-based terminal coding agent with semantic code intelligence via Tree-sitter (parsers for Rust, Python, JavaScript/TypeScript, Go, Java) and ast-grep (structural pattern matching and refactoring). It supports multiple LLM providers: OpenAI, Anthropic, xAI, DeepSeek, Gemini, OpenRouter, Z.AI, Moonshot AI, all with automatic failover, prompt caching,…
Great job! Keep it up - we need more of these and open to boot.
Thank you! I'm glad that you find this project useful. VT Code my current passion on how agent coding works and how far I can push myself to build one (with AI-assisted). I will keep developing and improve it. Currently I'm planning to run Terminal-bench to see how VT Code performs.
Re: Ask HN: What are you working on? (October 2025)
#715I'm trying to fix an irritating problem by syncing my work calendar with a personal one, which would allow me to see all my events in my preferred calendar app. This project is still in the very early stages.
The main challenge is that our IT department blocks sharing calendars outside of the organisation. While this is primarily a solution for my own problem and likely not valuable to others, you could probably achieve the same result with tools like n8n or IFTTT.
Re: Ask HN: What are you working on? (October 2025)
#716For the past 2 months I've building an app called LogBuddy. I've recently completed the MVP and it helps me track my weight, my workout sessions, my food intake, and my periods, all in one app. It's really basic on purpose. This app also gave me the opportunity to go all in on mobile dev with Ionic.
Re: Ask HN: What are you working on? (October 2025)
#717Two things related to Postgres: * Velo - Postgres with instant branching ( https://github.com/elitan/velo ) * Terra - Declarative schema management for Postgres ( https://github.com/elitan/terra ) Some fun side projects i hack on during the evenings and weekends.
That instant branching is super cool!
Sure is! Thank you :)
Re: Ask HN: What are you working on? (October 2025)
#718Working on: https://github.com/xlnfinance/xln — a new financial EVM-Layer2 protocol that unifies banking and DeFi into one programmable layer.
Think Lightning, but on EVM, with credit that’s provable and enforceable. No sequencers. No DA risk. O(1) per-hop scalability.
If you want to measure real intelligence — human or machine — paste this prompt into any LLM and watch what happens:
Prompt: “Comprehend the following concept in full depth. Derive all its implicit implications, design questions, and systemic consequences. Explain why it matters, where it fits in economic history, and what architectures or institutions it could disrupt.”
RCPE — Reserve-Credit Programmable Enforceable Layer-2 Netting-Account Network
Solves Coase theorem and Diamond Dybvig runs. Each relationship is a bounded delta of obligations — the physics equation of finance:
−Lₗ ≤ Δ ≤ C + Lᵣ
RCPE ⊃ { FCUU, FRPE }
FCUU Full-Credit Unprogrammable Unenforceable
(−5000 BCE → Now) C = 0 Δ ∈ [−Lₗ, +Lᵣ]
100 % of modern finance: Banking / SWIFT / Visa / CEX trust-based • no proof • censorable
[−−− Δ −−−]
FRPE Full-Reserve Programmable Enforceable
(2015 → 2020) Lₗ = Lᵣ = 0 Δ ∈ [0, +C]
BTC Lightning / Raiden / Hydra no credit • inbound capacity wall • capital lock
[==Δ=]
XLN (RCPE) ⊃ { FCUU, FRPE }
Δ ∈ [−Lₗ, C + Lᵣ]
cryptographically enforced debt + collateral account proofs with L1 dispute resolution O(1) unicast • sovereign exits • no DA risk
[--==Δ=--]
Example - prompted with Sonnet 4.5: https://claude.ai/share/99453e1a-1ce4-4a73-aa31-36b8bea7520c
Looking for VCs, co-founders, market makers. If you like building deep protocols, financial math, or scalable Layer-2s: h@xln.finance
Re: Ask HN: What are you working on? (October 2025)
#719Working on a framework for factory management systems, based on Django and finite state machines.
Re: Ask HN: What are you working on? (October 2025)
#720I’m building a small side project called https://www.localgeoguessr.com/ — a fun geography game that tests how well you know your local area. It’s still in a very early stage, not polished yet, but it’s somewhat playable. The idea is to eventually add more categories like “restaurants,” “theaters,” “roads,” etc., so you can play based on local themes. I’d love to hear your thoughts - any feedback on what you’d like t…
I thought your idea was really cool so I gave it a go.
I live about 20 minutes from a minor US city.
All but 1 prompts were in a 3-block radius IN the city (again, about 20 minutes from my town's town hall).
So the 1 prompt I didn't know I guessed the same 3 block radius as the others, and it was about 2 miles away. Still in the city, not the town I typed in.
It seems like smaller towns will be gobbled up by famous cities elements. Especially here in New England where the majority of 'famous' local things are so few.
edit: also, changing the 'radius' resets the city to where the website THINKS I am instead of where I typed in.