From 1b4f3bac6bce672e94cdc8f9d23bac2483381270 Mon Sep 17 00:00:00 2001
From: Erik <erik.nihlen@gmail.com>
Date: Thu, 14 May 2026 18:03:05 +0200
Subject: [PATCH] feat(B.6 slice 1): DebugPanel mirror for ProbeAutoWalk
 checkbox

Wires PhysicsDiagnostics.ProbeAutoWalkEnabled into the DebugVM + ImGui
panel checkbox alongside the existing Probe Resolve / Probe Cell /
Probe BSP hits checkboxes. Following the L.2a + L.2d pattern: the
panel toggle takes effect live (no relaunch needed) because the
diagnostic call sites read the static flag every frame.

Lets the next B.6 trace session toggle the probe via panel checkbox
when ACDREAM_DEVTOOLS=1, without an env-var dance.
---
 .../Panels/Debug/DebugPanel.cs                    |  5 +++++
 .../Panels/Debug/DebugVM.cs                       | 15 +++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/src/AcDream.UI.Abstractions/Panels/Debug/DebugPanel.cs b/src/AcDream.UI.Abstractions/Panels/Debug/DebugPanel.cs
index cdf7980..45f0e88 100644
--- a/src/AcDream.UI.Abstractions/Panels/Debug/DebugPanel.cs
+++ b/src/AcDream.UI.Abstractions/Panels/Debug/DebugPanel.cs
@@ -206,6 +206,7 @@ public sealed class DebugPanel : IPanel
         bool probeResolve  = _vm.ProbeResolve;
         bool probeCell     = _vm.ProbeCell;
         bool probeBuilding = _vm.ProbeBuilding;
+        bool probeAutoWalk = _vm.ProbeAutoWalk;
 
         if (r.Checkbox("Dump motion (ACDREAM_DUMP_MOTION)",     ref dumpMotion))   _vm.DumpMotion   = dumpMotion;
         if (r.Checkbox("Dump vitals (ACDREAM_DUMP_VITALS)",     ref dumpVitals))   _vm.DumpVitals   = dumpVitals;
@@ -220,6 +221,10 @@ public sealed class DebugPanel : IPanel
         // [resolve-bldg] entries; expect log volume to spike at walls.
         if (r.Checkbox("Probe BSP hits (ACDREAM_PROBE_BUILDING, slow)",
                        ref probeBuilding))                              _vm.ProbeBuilding = probeBuilding;
+        // B.6 slice 1 (2026-05-14): local-player auto-walk trace for issue #63.
+        // Low volume — only the local player's UM/UP/Use/PickUp events emit.
+        if (r.Checkbox("Probe auto-walk (ACDREAM_PROBE_AUTOWALK)",
+                       ref probeAutoWalk))                              _vm.ProbeAutoWalk = probeAutoWalk;
 
         r.Spacing();
 
diff --git a/src/AcDream.UI.Abstractions/Panels/Debug/DebugVM.cs b/src/AcDream.UI.Abstractions/Panels/Debug/DebugVM.cs
index e08750d..ef99a25 100644
--- a/src/AcDream.UI.Abstractions/Panels/Debug/DebugVM.cs
+++ b/src/AcDream.UI.Abstractions/Panels/Debug/DebugVM.cs
@@ -275,6 +275,21 @@ public sealed class DebugVM
         set => PhysicsDiagnostics.ProbeBuildingEnabled = value;
     }
 
+    /// <summary>
+    /// B.6 slice 1 (2026-05-14). Runtime mirror of
+    /// <c>PhysicsDiagnostics.ProbeAutoWalkEnabled</c> (env var
+    /// <c>ACDREAM_PROBE_AUTOWALK</c>). Toggling here flips the
+    /// <c>[autowalk-out]</c> / <c>[autowalk-mt]</c> / <c>[autowalk-up]</c>
+    /// trace used to characterize ACE's behavior during a server-
+    /// initiated auto-walk (issue #63). Low volume when off — only the
+    /// local player's events are filtered through the probe.
+    /// </summary>
+    public bool ProbeAutoWalk
+    {
+        get => PhysicsDiagnostics.ProbeAutoWalkEnabled;
+        set => PhysicsDiagnostics.ProbeAutoWalkEnabled = value;
+    }
+
     // ── Action hooks invoked by panel buttons ──────────────────────────
 
     /// <summary>