astrodyn_runner 0.1.1

Standalone arena-state simulation harness driving the astrodyn pipeline without Bevy ECS
Documentation

astrodyn_runner

Standalone arena-state simulation harness for the astrodyn orbital-dynamics pipeline.

astrodyn_runner is a parallel non-Bevy consumer of astrodyn. It owns its own state and drives the same pipeline functions the Bevy adapter runs from system schedules. Used for:

  • Tier 3 cross-validation tests (tests/tier3_*.rs) — propagating from JEOD initial conditions and comparing against Trick reference CSVs without standing up a Bevy App.
  • Batch propagation, scripting, and offline studies that don't need ECS scheduling, parallelism, or Bevy plugins.

Layered architecture

                  astrodyn
                  /       \
        astrodyn_bevy          astrodyn_runner    ←  this crate
        (Bevy adapter)     (plain Rust harness)

astrodyn_runner and astrodyn_bevy sit next to each other in the dep graph — both depend on astrodyn and the wider astrodyn_* family; neither depends on the other. Mission code targeting the production Bevy runtime depends on astrodyn_bevy, never on astrodyn_runner.

Quick start

[dependencies]
astrodyn = "0.1"
astrodyn_runner = "0.1"

use astrodyn_runner::SimulationBuilderExt;
use astrodyn::recipes::Mission;

let mut sim = Mission::iss_leo().into_builder().build().unwrap();
sim.step_n(10);
let body = sim.body(0);
println!("altitude: {:.0} m", body.trans.position.raw_si().length() - 6_378_137.0);

Mission::iss_leo() is one of the canned scenarios in astrodyn::recipes::scenarios; see that module for the full list. For Tier 3 verification scaffolding (Trick CSV diff, JEOD-source-backed initial conditions), reach for astrodyn_verif_jeod in addition to this crate.

See also