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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 6a5d8c1580 feat(core): port decompiled AC client physics — CollisionPrimitives + PhysicsBody 
Two major C# ports from the decompiled retail AC client (acclient.exe):

1. CollisionPrimitives (9 functions, 26 tests):
   - SphereIntersectsRay, RayPlaneIntersect, CalcNormal
   - SphereIntersectsPoly, FindTimeOfCollision
   - HitsWalkable, FindWalkableCollision
   - SlideSphere, LandOnSphere
   Ported from chunk_00530000.c functions FUN_005384e0 through FUN_0053a230.
   Cross-referenced against ACE's Physics/ C# port for algorithm verification.

2. PhysicsBody (7 methods, 31 tests):
   - update_object (top-level per-frame, sub-stepped at MaxQuantum=0.1)
   - UpdatePhysicsInternal (Euler: pos += v*dt + 0.5*a*dt²)
   - calc_acceleration (gravity=-9.8 when HasGravity)
   - set_velocity (clamp to MaxVelocity=50)
   - set_local_velocity (body→world via quaternion)
   - set_on_walkable, calc_friction (ground normal + pow decay)
   Ported from chunk_00510000.c/chunk_00500000.c.
   Struct layout confirmed against ACE PhysicsObj field offsets.

367 total tests green (258 core + 109 net). 57 new tests.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-12 23:54:51 +02:00
docs research: complete acclient.exe function map — 70+ identified functions 2026-04-12 23:46:22 +02:00
src feat(core): port decompiled AC client physics — CollisionPrimitives + PhysicsBody 2026-04-12 23:54:51 +02:00
tests feat(core): port decompiled AC client physics — CollisionPrimitives + PhysicsBody 2026-04-12 23:54:51 +02:00
tools feat(core): port decompiled AC client physics — CollisionPrimitives + PhysicsBody 2026-04-12 23:54:51 +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(CLAUDE.md): consolidated reference hierarchy + never-guess policy 2026-04-12 22:42:04 +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.