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Modern open-source C# .NET 10 Asheron's Call client. Faithful port of retail client behaviour to Silk.NET with a plugin API.
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Erik bd184e1afd fix(world): DerethDateTime tick-0 offset — sky was 7/16 of a day wrong 
User observed: 'time is flipped — supposed to be day/evening, but shows
night/morning.' That's a ~half-day offset.

Root cause in ACE DerethDateTime.cs line 23:
  private const double dayZeroTicks = 0; // Morningthaw 1, 10 P.Y. - Morntide-and-Half

ACE anchors tick 0 to Morntide-and-Half (slot 7 on the 0-indexed 16-slot
scale) — NOT Darktide (slot 0 = midnight) as our DayFraction function
assumed. Confirmed by DerethDateTime.cs:145:
  private int hour = (int)Hours.Morntide_and_Half;

Fix: shift DayFraction by +7/16 * DayTicks (3333.75) so tick 0 maps to
its real calendar slot. Exposed as DayFractionOriginOffsetTicks constant
for documentation + downstream referencing.

Effect on sun: previously, server tick ~0 (just-booted ACE) produced
dayFraction 0 → midnight sky → night colors at noon real-time.
Now dayFraction 7/16 = 0.4375 → late morning sky → noon-ish colors
within 1/16 of a day, which matches what a user actually sees when
launching during daytime.

Tests updated for the corrected convention:
- DerethDateTime.DayFraction(0) = 7/16 (not 0).
- CurrentHour(0) = MorntideAndHalf (not Darktide).
- IsDaytime(0) = true.
- Midnight (Darktide, slot 0) is 9/16 of a day past tick 0.
- SkyState + WorldTimeDebug tests retargeted to the new frame.

Build green, 711 tests pass.

Ref: references/ACE/Source/ACE.Common/DerethDateTime.cs:23-25 + :145.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-19 14:27:49 +02:00
docs docs: mark Phase G.1+G.2 full visual stack as shipped 2026-04-19 10:54:33 +02:00
memory docs: session memory — evening animation investigation + agent dispatch 2026-04-19 10:52:24 +02:00
src fix(world): DerethDateTime tick-0 offset — sky was 7/16 of a day wrong 2026-04-19 14:27:49 +02:00
tests fix(world): DerethDateTime tick-0 offset — sky was 7/16 of a day wrong 2026-04-19 14:27:49 +02:00
tools feat(core): port decompiled AC client physics — CollisionPrimitives + PhysicsBody 2026-04-12 23:54:51 +02:00
.gitignore chore: gitignore launch.log 2026-04-18 23:11:56 +02:00
AcDream.slnx feat(net): AcDream.Core.Net scaffold + ISAAC keystream (Phase 4.1) 2026-04-11 14:14:28 +02:00
CLAUDE.md docs: comprehensive architecture plan for acdream 2026-04-13 14:23:50 +02:00
README.md chore: phase 0 — skeleton + dat asset inventory 2026-04-10 09:02:56 +02:00

README.md

acdream

Experimental modern open-source Asheron's Call client in C# / .NET 10.

Status: pre-alpha, not playable. Phase 0 only — dat file asset inventory.

Stack: .NET 10, Chorizite.DatReaderWriter for dat parsing. Silk.NET + Avalonia planned for rendering/UI (not yet wired up).

Requires: A retail Asheron's Call install (Turbine/Microsoft property — supply your own). Set ACDREAM_DAT_DIR environment variable to the directory containing client_portal.dat, client_cell_1.dat, client_highres.dat, and client_local_English.dat, or pass it as the first CLI argument.

Layout

  • src/AcDream.Cli/ — console app that dumps asset counts from a dat directory
  • references/ — local read-only reference material (ACE, ACViewer, WorldBuilder, DatReaderWriter, holtburger, retail AC install). Gitignored.

Run

dotnet run --project src/AcDream.Cli -- "C:\path\to\Asheron's Call"

Or set ACDREAM_DAT_DIR and run without args.