Module simulation 

Simulation systems: cellular automata, N-body physics, reaction-diffusion, epidemiological models, and traffic simulation.

Structs

BelousovZhabotinsky

Simplified 3-variable BZ reaction model on a 2D grid.

Body

A gravitational body.

BriansBrain

BzParams

Parameters for the Belousov-Zhabotinsky oscillator.

CellularAutomaton

Generic 2D cellular automaton grid.

FitzHughNagumo

FitzHugh-Nagumo excitable medium — models action potentials and spiral waves.

ForestFire

Probabilistic forest fire cellular automaton.

GameOfLife

Conway’s Game of Life.

GrayScott

Gray-Scott reaction-diffusion system. Models Turing pattern formation.

GrayScottPreset

Preset parameters for Gray-Scott system.

IntelligentDriverModel

Intelligent Driver Model (IDM) parameters.

LangtonsAnt

Langton’s Ant — universal Turing machine on a 2D grid.

NBodySimulation

N-body simulation state.

NagelSchreckenberg

Nagel-Schreckenberg cellular automaton traffic model.

OrbitalElements

Classical orbital elements.

SeirdModel

SEIRD model with Exposed and Deceased compartments.

SirCell

Per-cell state for spatial SIR model.

SirGrid

Spatial SIR model on a 2D grid.

SirModel

Susceptible-Infected-Recovered (SIR) model.

Totalistic1D

Wolfram elementary 1D cellular automaton (256 rules).

Vec3

Vehicle

Vehicle in the IDM model.

WireWorld

WireWorld cellular automaton — simulates digital electronic circuits.

Enums

AntDir

BrianCell

Brian’s Brain 3-state automaton.

ForestCell

Cell states for forest fire model.

OctreeNode

Node in the Barnes-Hut octree.

WireWorldCell

WireWorld cell states.

Functions

barnes_hut_step

Barnes-Hut O(n log n) gravity step.

direct_gravity_step

Direct O(n²) gravity calculation and Euler step.

from_state_vectors

Compute orbital elements from state vectors.

leapfrog_step

Leapfrog (Störmer-Verlet) symplectic N-body step.

solve_kepler_equation

Solve Kepler’s equation M = E - e*sin(E) for eccentric anomaly E.

to_state_vectors

Convert orbital elements to state vectors.