ludic/changes
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feat(light): render-quality tiers 3-4 — cones, falloff, soft shadows, gels, normals, day/night (#49)
The remaining lighting tiers from the original proposal, all extending the
deterministic accumulation core (light.ludic) — no new ECS plumbing:

- Light.spot: cone / flashlight lights (direction + spread degrees), with a
  self-contained integer atan2-in-degrees and a feathered edge.
- Light.falloff: a brightness-ramp exponent (1 linear, 2 quadratic, …) via
  repeated fixed multiply.
- Light.soft: soft shadows — an area-sampled light so an occluder edge fades
  through a penumbra instead of a hard cut.
- Light.gel + Light.clear_gel: colour cookies — a light gels from its centre
  colour to a rim colour.
- Light.normal + Light.clear_normals + Light.height: a normal G-buffer so
  surfaces shade by facing (N·L), not distance alone (tier 3).
- Light.time_of_day: a day/night ambient ramp from a single 0..1 value.

The engine lighting system (systems_light.ludic) consumes matching optional
Light2D fields — direction/spread/falloff/softness/gel — each defaulting off so
an older five-field Light2D lights exactly as before. Every tier is integer +
Q16.16 fixed, so scenes light identically on every run and headless.

Worked example + regression: examples/library/light_tiers.ludic (1 1 1 1 1 1 1 1 1).
Nine new docs/language/light pages. Full suite 76 passed, self-host C-free
fixpoint intact, no golden drift.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-08-31 16:35:41 +03:00
..
coverage.md feat(testing): line coverage via --coverage + bin/x test --coverage (#45) 2026-08-31 14:51:14 +03:00
engine-systems.md feat(ecs): engine-owned systems auto-tick user components (#43) 2026-08-31 15:41:44 +03:00
error-handling.md feat(errors): panic(msg) + assert(cond, msg) with file:line — no raw crashes (#8) 2026-08-31 14:33:37 +03:00
input-actions.md feat(input): action maps + deterministic record/replay (#7) 2026-08-31 16:03:56 +03:00
light-ecs-components.md feat(ecs): Light2D/Occluder/Ambient as auto-consumed components (#47) 2026-08-31 15:49:50 +03:00
light-namespace.md feat(rendering): add Light.* — deterministic 2D light accumulation with hard shadows (#4) 2026-08-31 14:07:19 +03:00
light-tiers.md feat(light): render-quality tiers 3-4 — cones, falloff, soft shadows, gels, normals, day/night (#49) 2026-08-31 16:35:41 +03:00
README.md feat(release): SemVer + ludicc --version, changesets, and x release 2026-08-30 23:46:59 +03:00
recover.md feat(errors): recoverable failures as values — try/else over ok/err results (#46) 2026-08-31 15:04:14 +03:00
testing-framework.md feat(testing): built-in test blocks + expect assertions, auto-run with pass/fail (#12) 2026-08-31 14:27:45 +03:00
value-tree.md feat(reflect): generic value tree + Reflect.serialize/apply + JSON bridge (#44) 2026-08-31 15:19:21 +03:00

Changesets

A changeset is one small Markdown file describing a single user-facing change, dropped in this directory. x release consumes every changeset here into a new CHANGELOG.md section, bumps VERSION, and deletes the consumed files.

Format

bump: minor
type: feat
One or more lines describing the change, in the past-agnostic imperative used in
the changelog. Markdown is fine.
  • bump: — major, minor, or patch (SemVer). The release version is bumped by the highest level among the pending changesets (unless x release <level> overrides it).
  • type: — the Conventional Commit type (feat, fix, perf, docs, …); it becomes the bold prefix of the changelog bullet.

Adding one

Create a file with a short, unique name, e.g. changes/regex-namespace.md. Any filename works except this README.md, which the release step always skips.