CHANGELOG.md

0.4.0 (Unreleased)

Added

• EntityRef::len to query how many components an entity has
• Support for serializers that require maps to be of known length
• An alternative column-major serialization layout for better performance and compressibility

0.3.2

Added

• The serde feature, enabling serialization of Entity handles, and a serialization module to simplify (de)serializing worlds
• World::len() exposing the number of live entities
• Access to component data inside Archetypes to allow custom column-major operations
• ColumnBatch for efficiently spawning collections of entities with the same components when those components' types are not statically known

0.3.1 (November 9, 2020)

Fixed

• Incorrect alignment handling in EntityBuilder

0.3.0 (November 8, 2020)

This release includes API extensions and many optimizations, particularly to query iteration. Special thanks are due to contributors mjhostet for performance improvements, sdleffler and AngelOfSol for API improvements and internal refactoring, Veykril for rewriting #[derive(Bundle)], and cart for coordinating with the bevy community. This release wouldn't have been possible without their hard work!

Added

• #[derive(Query)] for more ergonomic specification of complex queries
• Support for generic, tuple, and unit structs in #[derive(Bundle)]
• World::query_mut and World::query_one_mut reduce setup cost when dynamic borrow checks are unnecessary
• QueryItem<'a, Q> type alias identifying the output of the query Q borrowing for lifetime 'a
• World::find_entity_from_id allows finding a live entity's Entity handle from its 32-bit id.
• World::spawn_at allows creating a new entity for an existing Entity handle, enabling easier deserialization.
• Archetype::component_types simplifies certain scripting patterns

Fixed

• Panic when passing empty bundles to World::remove
• Misbehavior when using tuple bundles with multiple fields of the same type