Flecs v3.2.4

Highlights

• Performance improvements!
  • 25%-80% performance improvement when creating/deleting entity hierarchies
  • 70%-90% performance improvement when reparenting/changing entity names
  • 40% performance improvement for event forwarding
  • 5%-20% performance improvement when iterating cached queries
• A new query feature that allows for nesting terms
• A new alerting addon that monitors graph queries for invalid patterns, with explorer UI:

Release notes

This version includes the following bugfixes:

• Fix issue with calling children() on builtin Wildcard/This entities
• Fix issue in rule engine with anonymous source variables and component terms

This version includes the following improvements:

• [alerts] Implement alert addon
• [cpp] Add world::children method for iterating root entities
• [expr] Add ecs_interpolate_string function
• [expr] Add support for evaluation of dotexpressions on variables (e.g. $foo.x)
• [rules] Add support for nested query terms
• [queries] Reduce overhead of query cache entry by not inlining infrequently used fields
• [queries] Reduce complexity and indirection of query cache data structures
• [systems] Allow rate/interval to be modified with ecs_system_init
• [pipelines] Add support for integration with external tasks systems (thanks @gsnook!)
• [docs] Correct parameter naming of flecs_hashmap_init (thanks @kagetu!)
• [docs] Add section on task systems to system manual
• [core] Allow Exclusive property to be removed from (unused) ids
• [ux] Improve error messages in flecs_bulk_new, ecs_rule_iter
• [internals] Improve naming of functions, constants and add more comments
• [internals] Don't emit unnecessary TableFill/TableEmpty events
• [internals] Don't emit unnecessary TableCreate/TableDelete events
• [internals] Revalidate observer cache in more scenarios (reduces cache invalidation events)
• [internals] Remove redundant calls to defer_begin/defer_end in bootstrap
• [internals] Improve performance of id record creation for pairs
• [internals] Don't inline infrequently used fields in ecs_table_t
• [internals] Remove dead sorting code (thanks @jbarthelmes!)

Benchmark results
https://github.com/SanderMertens/ecs_benchmark/tree/f1a776066fc6d857c9aa1e7c3d7ff59069583750

Known issues:
#969
#965
#844
#765
#714
#620
#478
#314

New Contributors

• @kagetu made their first contribution in #987
• @gsnook made their first contribution in #958

Full Changelog: v3.2.3...v3.2.4