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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 131594d91b fix(core): correct triangle boundary conditions in TerrainSurface.SampleZ 
ROOT CAUSE FIX for persistent slope Z clipping.

The SWtoNE/SEtoNW triangle boundary tests were swapped. AC's naming is
counter-intuitive: "SWtoNE cut" means BL and TR are the ISOLATED vertices
— the shared hypotenuse runs TL(0,1)→BR(1,0), so the dividing test is
tx+ty=1, NOT ty=tx. We had them backwards, causing every cell to sample
from the wrong triangle — up to 7.5 unit Z errors on steep terrain.

Fixed by cross-referencing WorldBuilder-ACME-Edition which has:
- ClientReference.cs: faithful C# port of decompiled AC client code
- TerrainConformanceTests.cs: verified against 25,600 cells
- TerrainGeometryGenerator.GetHeight(): matches the mesh index buffer

Also removes the slope gradient hack from PlayerMovementController —
no longer needed since SampleZ now returns exact triangle-surface Z.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-12 22:27:16 +02:00
docs docs: movement deep dive — AC2D + holtburger cross-reference 2026-04-12 21:52:12 +02:00
src fix(core): correct triangle boundary conditions in TerrainSurface.SampleZ 2026-04-12 22:27:16 +02:00
tests fix(app): multi-point Z sampling + never-cull player landblock 2026-04-12 21:29:54 +02:00
.gitignore chore: phase 0 — skeleton + dat asset inventory 2026-04-10 09:02:56 +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: movement deep dive — AC2D + holtburger cross-reference 2026-04-12 21:52:12 +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.