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feat(ecs): #80 entity-pool stats (Pool.live/free/reserved/capacity)
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Ludic's ECS is already pool-based — the allocator recycles freed entity slots
through a freelist (L_alloc pops @L_freen before growing @L_entc), and component
storage is fixed per-entity arrays, so spawn/despawn churn (bullet-hell/horde)
does no per-spawn heap allocation and cannot fragment. Expose that with a Pool.*
namespace so a game can watch reuse: Pool.live (alive now), Pool.free (recycled
slots waiting), Pool.reserved (high-water — stays flat across a steady
spawn/despawn loop, proving reuse not reallocation), Pool.capacity (the fixed
cap). Zero-cost inline reads of the existing counters.

Example pool.ludic proves the key property: after despawn+respawn,
Pool.reserved() stays 3 (freed slot reused) — prints 0 0 3 3 0 2 1 3 0 3 1.
4 docs pages. Full suite 118/0, goldens byte-identical, fixpoint holds.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-02 08:23:58 +03:00
parent f2cb3cd7e8
commit 347352cc4c
10 changed files with 25580 additions and 25382 deletions
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1
tools/x/test.ludic
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@ -243,6 +243,7 @@ function cmd_test() -> int {
feat_case("library/anim_sugar", "", "4 8 2 1 0 100 100 0 0 1 20 20 30 0 1", "anim_sugar.ludic (Anim.clip/play/on_frame/fired + Motion.to + fluent Tween.to/chain/delay/parallel handles; issue #48)")
feat_case("library/namespace_block", "", "15 42 100", "namespace_block.ludic (#76 namespace Name { export/internal function } block — declares the namespace once, controls the public surface)")
feat_case("library/preload", "", "3 0 0 0 1 33 66 1 100 1", "preload.ludic (#82 Assets.enqueue/pump/progress/ready — incremental asset preload for a loading scene)")
feat_case("library/pool", "", "0 0 3 3 0 2 1 3 0 3 1", "pool.ludic (#80 Pool.live/free/reserved/capacity — the ECS freelist recycles despawned slots, reserved stays flat)")
feat_case("library/atlas", "", "16 16 32 48 1 1 1 16 1", "atlas.ludic (#81 Sprite.sheet/cell/cell_span/define/named + Assets.image/get — namespaced spritesheet/atlas with multi-cell sprites)")
feat_case("library/camera_zoom", "", "1 0 0 1 1", "camera_zoom.ludic (Camera.zoom deterministic Q16.16 render-time zoom about the screen centre, verified by pixel readback; issue #78)")
feat_case("library/clear_color", "q", "1 1", "clear_color.ludic (@ClearColor: the Render phase auto-clears to the declared colour + auto-presents, no Screen.clear/show in the handler; issue #86)")