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language:
- en
license: other
license_name: sovereign-leviathan-sl-agpl3-001
license_link: https://huggingface.co/datasets/SNAPKITTYWEST/orbital-one/blob/main/LICENSE
tags:
- typescript
- simulation
- spacecraft
- physics
- three-js
- browser
- sdk
- zero-dependencies
- sovereign
- snapkitty
- flight-model
- telemetry
- guidance
task_categories:
- other
size_categories:
- n<1K
pretty_name: orbital-one — Browser Spacecraft Simulator + SDK
---
# orbital-one
**Browser spacecraft simulator and headless flight-model SDK.**
Launch from the pad, fly a two-stage ascent to orbit — or import the sim engine directly into your own project.
SnapKitty West / SNAPKITTYWEST — Sovereign Leviathan covenant (SL-AGPL3-001) — 2026
---
## What It Is
A browser 3D spacecraft simulator built on Three.js + Vite, with a **zero-dependency TypeScript SDK** that exposes all 8 sim modules for headless use in Node, Deno, Bun, or any bundler.
```ts
import { createState } from './src/sim/state.js';
import { tick } from './src/sim/physics.js';
import { telemetry } from './src/sim/telemetry.js';
const s = createState();
for (let i = 0; i < 6000; i++) tick(s); // 100 simulated seconds
console.log(telemetry(s).altitude); // metres above surface
```
---
## Repository
```
orbital-one/
├── src/
│ ├── sim/
│ │ ├── state.ts Mission state (vehicle, fuel, orbit elements)
│ │ ├── physics.ts Tick-based physics integrator
│ │ ├── guidance.ts Ascent + orbital guidance laws
│ │ ├── navigation.ts Inertial navigation system
│ │ ├── propulsion.ts Engine model (thrust, Isp, staging)
│ │ ├── mission.ts Mission sequencer (pre-launch → orbit → coast)
│ │ ├── telemetry.ts Telemetry snapshot (altitude, velocity, apoapsis...)
│ │ └── math.ts Orbital mechanics primitives (Kepler, RK4)
│ ├── render/world.ts Three.js scene (planet, vehicle, trajectory trail)
│ ├── ui/
│ │ ├── cockpit.ts Flight deck HUD
│ │ └── instruments.ts Instrument panel (altitude tape, velocity, TWR)
│ ├── audio.ts Engine audio (Web Audio API)
│ ├── input.ts Keyboard + gamepad bindings
│ └── main.ts App entry point
├── tests/
│ ├── flight.test.ts Headless physics tests
│ ├── browser/flight.spec.ts Playwright end-to-end
│ └── profile.ts Performance profile harness
└── docs/verification.md Simulation verification notes
```
---
## Sim Modules — SDK Reference
| Module | Export | Description |
|---|---|---|
| state | `createState()` | Fresh mission state |
| physics | `tick(state)` | Advance simulation 1/60 s |
| guidance | `guidanceUpdate(state)` | Pitch program + orbit insertion |
| navigation | `navUpdate(state)` | Inertial position/velocity |
| propulsion | `propulsionTick(state)` | Thrust, Isp, staging events |
| mission | `missionSequencer(state)` | Phase transitions |
| telemetry | `telemetry(state)` | Snapshot (altitude, velocity, apoapsis, etc.) |
| math | `keplerStep`, `rk4` | Orbital mechanics primitives |
All modules are zero-dependency TypeScript. `package.json` exports map wires every entry point.
---
## Quick Start
```sh
npm ci && npm run dev # browser app → http://127.0.0.1:5173
npm test # headless physics tests
npm run test:browser # Playwright (requires Chrome)
npm run build # → dist/ (static, serve over HTTP)
```
Requires Node.js 22.12+.
---
## Stack
| Layer | Tool |
|---|---|
| 3D rendering | Three.js r180 |
| Bundler | Vite 7 |
| Language | TypeScript 5.9 |
| Tests | Vitest + Playwright |
| License | Sovereign Leviathan covenant (SL-AGPL3-001) |
---
## Related Repos
| Repo | Description |
|---|---|
| [SNAPKITTYWEST/sov](https://huggingface.co/datasets/SNAPKITTYWEST/sov) | Sovereign Package Switchboard |
| [SNAPKITTYWEST/mantra](https://huggingface.co/datasets/SNAPKITTYWEST/mantra) | Deterministic auditable language |
| [GitHub](https://github.com/SNAPKITTYWEST/orbital-one) | Source + CI |
|