Struct SimulationCheckpoint 

pub struct SimulationCheckpoint {
    pub version: u32,
    pub label: String,
    pub timestamp: f64,
    pub sim_time: f64,
    pub step_count: u64,
    pub gravity: [f64; 3],
    pub bodies: Vec<BodyStateJson>,
    pub metadata: HashMap<String, String>,
}

A simulation checkpoint with metadata for save/restore workflows.

Fields

version: u32

Checkpoint format version.

label: String

Human-readable checkpoint label.

timestamp: f64

Wall-clock timestamp (Unix seconds, approximate).

sim_time: f64

Simulation time at checkpoint.

step_count: u64

Number of steps taken.

gravity: [f64; 3]

Gravity vector at checkpoint.

bodies: Vec<BodyStateJson>

All body states.

metadata: HashMap<String, String>

Arbitrary metadata key-value pairs.

Implementations

impl SimulationCheckpoint

pub const FORMAT_VERSION: u32 = 1

Current checkpoint format version.

pub fn empty(label: impl Into<String>) -> Self

Create an empty checkpoint.

pub fn from_snapshot( snap: &SimulationSnapshot, label: impl Into<String>, step_count: u64, timestamp: f64, ) -> Self

Build a checkpoint from a SimulationSnapshot.

pub fn to_json(&self) -> String

Serialize to JSON.

pub fn from_json(json: &str) -> Result<Self, Error>

Deserialize from JSON.

pub fn to_snapshot(&self) -> SimulationSnapshot

Convert back to a SimulationSnapshot.

pub fn body_count(&self) -> usize

Number of bodies in the checkpoint.

Trait Implementations

impl Clone for SimulationCheckpoint

fn clone(&self) -> SimulationCheckpoint

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SimulationCheckpoint

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SimulationCheckpoint

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for SimulationCheckpoint

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.