Snapshot holds initial-state data which can be used to load specific state for a simulation instance. Snapshot still needs to point to a scenario so a simulation instance can be spawned. Snapshot only provides data which can be loaded onto an already existing simulation.

Snapshot must contain:

  • serialized copy of the database object
  • snapshot metadata

tip TODO: Snapshot could also optionally contain a collection of archived states for past simulation ticks.

Keep in mind that snapshot data is loaded only after the simulation instance has been spawned. This means that if there is any data on the snapshot that corresponds to an item that doesn’t exist in the initialized simulation instance then it will not be loaded. Also the other way around, if the snapshot doesn’t contain data for something that is defined and exists at the simulation instance, then the default value from the declaration will be used.