ludic/examples/networking/net_sync.ludic
Orkuncakilkaya fb728bbefe chore(repo): DX cleanup — categorise examples, text-diffable golden, build/ output (#27 #28 #30)
Repository-cleanup / DX pass folding three tracker items into one coherent
change, verified green end to end (`bin/x test` 49/0, `bin/x selfhost-test`
29/0, `bin/x test-tools` 29/0).

#28 — curate & categorise examples/
- 42 flat entries regrouped into intent-revealing subdirs: games/, rendering/,
  ecs/, events/, networking/, lang/, library/ (was lib/).
- chronorift dir-vs-file duplication resolved: the entry file and its import
  modules now live together under games/chronorift(.ludic).
- Every path reference updated repo-wide (test runner, editor-tool drivers,
  docs/site, design docs).
- New examples/README.md indexes the whole set with run commands.
- Showcase examples without a self-asserting entry (hello, events, net_rt) now
  get a compile-only rot guard in `bin/x test`, so nothing here rots silently.

#30 — text-diffable golden baseline
- The 4 binary selfhost/golden/*.ppm blobs are replaced by a single
  selfhost/golden/renders.sha256 manifest (SHA-256 per render). Hashes are
  byte-identical to the old PPMs, so the baseline is unchanged — only its form.
- game_case now compares framebuffer hashes; a regression shows as a changed
  hex line in review, not "binary files differ".
- New `bin/x golden` regenerates the manifest deliberately (review with
  `git diff selfhost/golden/renders.sha256`).

#27 — PPM & asset handling
- Headless renders now write build/out.ppm, never the repo root; `x app`,
  `x clean`, messaging and .gitignore updated to match. Nothing is written to
  the working root any more.
- Redundant local Kenney .zip archives removed (the art ships extracted;
  .gitignore already excludes *.zip). CC0 License.txt files retained.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-08-30 18:54:21 +03:00

40 lines
2 KiB
Text

# net_sync.ludic — N2: @Sync replication codegen (NETWORKING-DESIGN §6.1, §13 N2).
#
# Replication is opt-in at the field level and per model use-site. All three
# granularities here:
# @Sync property Position — every field of Position is replicable
# Health { @Sync hp, max } — only hp is replicable; max never is
# @Sync Position in Player — Position participates → x, y replicate
# Position in Prop — not @Sync here → Prop's Position does NOT replicate
#
# The compiler generates per-model serialize/apply over exactly the replicable-
# and-participating fields, plus by-kind dispatchers: sync_size(e) / serialize(e,
# buf) / apply(e, buf, len). This snapshots a Player's synced fields, mutates all
# of them, then applies the snapshot: synced fields (x, y, hp) restore; the
# unsynced one (max) keeps its mutation. Prints 12 (bytes) / 3 4 50 999.
program NetSync {
@Sync property Position { x: int = 0, y: int = 0 } # all fields replicable
property Health { @Sync hp: int = 0, max: int = 0 } # only hp replicable
@Owned model Player { @Sync Position, @Sync Health }
model Prop { Position } # Position not @Sync here → no replication
entry {
spawn Player { Position { x: 3, y: 4 }, Health { hp: 50, max: 100 } }
for (Position, Health) in query [Position, Health, {Player}] {
let e = self()
let buf = bytes(64)
print(sync_size(e)) # 12 = Position(x,y)=8 + Health.hp=4
let n = serialize(e, buf) # snapshot the synced fields
Position.x = 99 # mutate everything
Position.y = 88
Health.hp = 7
Health.max = 999 # max is NOT synced
apply(e, buf, n) # restore from the snapshot
print(Position.x) # 3 — restored
print(Position.y) # 4 — restored
print(Health.hp) # 50 — restored
print(Health.max) # 999 — kept (unsynced)
}
}
}