Adds the ECS hook issues #43 and #47 named as their real dependency: a
system the *engine* owns, inserted into the frame loop over a component a
game merely declares and carries — no `handler` wired.
- runtime/native/systems.ludic: esys_spriteanim (SpriteAnim frame advance:
loop/once/pingpong) and esys_motion (Motion value tween: linear/in/out/
in-out), both on the by-name reflection ABI, integer + deterministic.
- backend: emit_engine_systems_for_phase inserts the calls after every user
handler in a phase (auto-loop and the drivable tick helpers alike);
uses_engine_systems() drives the systems.ludic splice, the world-table
force-emit, and makes a component-only game count as a systems game.
- A game that declares neither component is byte-for-byte unchanged.
Worked example + regression: examples/library/anim_ecs.ludic. Full suite
73 passed, self-host C-free bootstrap fixpoint intact.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Split the flat 38-file selfhost/ into concern-based subdirectories:
frontend/ lex, parse, parse_game, ast
support/ str, buf, io
backend/ core IR + expression/statement lowering
backend/game/ ECS/scene/event/world lowering
backend/stdlib/ the namespaced Math.*/Text.*/Crypto.*/… intrinsics
and split the three oversized emitters at responsibility boundaries so
no file mixes concerns:
emit_game.ludic -> + emit_world.ludic (reflection world table,
tick helpers, @main synthesis)
emit_expr.ludic -> + emit_call.ludic (namespaced builtins, call
lowering, expr dispatch)
emit_text.ludic -> + emit_text_prelude.ludic (emitted string-builder runtime)
FRAGS in tools/x/selfhost.ludic is updated to the new paths with the link
order preserved, and the Python doc/vocabulary tooling is updated to walk
the new layout. Because the build is a plain in-order concatenation and
every split lands on a blank-line boundary, the regenerated seed is
byte-identical: `x reseed` leaves selfhost/ludicc.seed.ll unchanged,
`x bootstrap-cfree` still reaches its fixed point, and both `x test` (56)
and `x selfhost-test` (29, incl. golden renders) stay green.
Closes#29
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
