Struct SnapshotDiff 

pub struct SnapshotDiff {
    pub added_entities: Vec<EntitySnapshot>,
    pub removed_entities: Vec<u64>,
    pub changed_entities: Vec<(u64, EntitySnapshot)>,
    pub changed_resources: Vec<ResourceSnapshot>,
    pub removed_resources: Vec<String>,
}

The delta between two WorldSnapshots. Used for incremental saves and for detecting what changed between frames.

Fields

added_entities: Vec<EntitySnapshot>

Entities present in new but not in old.

removed_entities: Vec<u64>

Entity ids present in old but removed in new.

changed_entities: Vec<(u64, EntitySnapshot)>

Entities present in both but with different component data.

changed_resources: Vec<ResourceSnapshot>

Resources added or changed.

removed_resources: Vec<String>

Resource type names that were removed.

Implementations

impl SnapshotDiff

pub fn new() -> Self

pub fn is_empty(&self) -> bool

Returns true if no changes were detected.

pub fn entity_change_count(&self) -> usize

Total number of entity-level changes.

pub fn resource_change_count(&self) -> usize

Total number of resource-level changes.

Trait Implementations

impl Clone for SnapshotDiff

fn clone(&self) -> SnapshotDiff

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SnapshotDiff

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

Formats the value using the given formatter.

impl Default for SnapshotDiff

fn default() -> SnapshotDiff

Returns the “default value” for a type.