Release Flecs v3.2.10 · SanderMertens/flecs

Highlights

Significant performance improvements of the rule query engine:
- Up to 4x faster when compared with v3.2.9 for simple component queries
- Up to 6x faster when compared with filters for simple component queries
- Many other improvements, like automatic reordering of terms & simplified control flow
Rules now support up traversal!

⚠️ The next release will merge the filter, rule and query implementations into a single query API, expect breaking changes! ⚠️

This version includes the following bugfixes:

Fix memory leak with batched set commands for new components
Fix issue in detection of whether a query has no data fields
Fix missing argument in error trace in meta addon
Fix issue that would occur when units module is not imported before monitor module
Fix issue with invalidating observer reachable cache
Fix issue where on_set hook was invoked without deferred mode & could be called twice
Fix issue where structural changes from on_set hook could get lost
Fix issue where anonymous rule variables would be stored before regular variables in variable array
Fix issue where content type wasn't set on reply for cached HTTP request
Fix segfault when enqueueing custom event
Fix duplicate matches in rules with or (||) expressions
Fix issue where ids of terms without source weren't correctly set in rule iterator
Fix duplicate matches in rules with Any wildcards
Fix issue with any terms with not (!) operators in rules
Fix crash in query DSL parser when using Rel(X, Y, Z) syntax
Fix assignment within conditional expression error
Fix issue where cloning an entity with a name would throw an error

This version includes the following improvements:

[rules] Implement up traversal for rules
[rules] Simplify control flow instructions of rule engine
[rules] Add new rule instructions for trivial queries which batches evaluation of multiple terms
[rules] Implement automatic filtering of prefab/disabled entities
[rules] Implement rule instruction reordering to limit evaluation of instructions with only unknown variables
[rules] Improve performance of evaluating queries with exclusive wildcard pairs
[rules] Improve performance of setting data fields for trivial and mixed source queries
[meta] Add new id primitive type for component ids/pairs
[meta] Use %f in log statements for doubles instead of %d
[json] Remove overzealous check on whether it.ptrs is NULL in iterator serializer
[stats] Remove redundant REST statistics
[stats] Remove less than useful table statistics
[stats] Remove less than useful id statistics
[rest] Reduce log spam from invalid queries from REST API in release mode
[meson] Make compiling hello world example optional (thanks @apache-hb!)
[docs] Fix broken link in REST manual
[docs] Fix C++ module example in manual
[docs] Fix typos in source & documentation (thanks @waywardmonkeys!)
[docs] Doc improvements and formatting (thanks @waywardmonkeys!)
[docs] Remove redundant comment terminators (thanks @waywardmonkeys!)
[ci] Update GitHub actions to actions/checkount@v4 (thanks @waywardmonkeys!)
[ci] Fix new gcc warnings

Benchmark results
https://github.com/SanderMertens/ecs_benchmark/tree/ab33138f58c7a24cf05f662ac790d7cfbcfbe8e0

Known issues:
#844
#765
#714
#620
#478
#314

Full Changelog: v3.2.9...v3.2.10