From eee31e55d8016dce3fa7d20e26ed1d8b13378e14 Mon Sep 17 00:00:00 2001
From: Jacob Babor <jacob@babor.tech>
Date: Sat, 20 Jun 2026 13:53:09 -0500
Subject: [PATCH] Decode route element float fields

---
 docs/red4ext-logging-shim.md       | 44 ++++++++++++++++++++++++++++--
 red4ext/EdgeWeightGPS/src/Main.cpp | 15 ++++++++--
 2 files changed, 55 insertions(+), 4 deletions(-)

diff --git a/docs/red4ext-logging-shim.md b/docs/red4ext-logging-shim.md
index 1209fb1..72089a9 100644
--- a/docs/red4ext-logging-shim.md
+++ b/docs/red4ext-logging-shim.md
@@ -190,13 +190,53 @@ Latest route-result findings:
   cleanly matched the visible routes: side job `12`, Sinnerman `23`, Claire's
   Garage `18`, and custom pin `17`.
 - The vector elements are 0x28-byte records, not pointers. `0x41be2c` calls
-  `0x41be94` with `(data, data + count * 40)`, so the next probe logs each
+  `0x41be94` with `(data, data + count * 40)`. The active probe logs each
   route element as a compact 40-byte record tuple:
-  `h00,u08,u0c,u10,u14,h18,h20`.
+  `h00,u08hex,u0c,u10,u14,h18,h18lowFloat,h18highFloat,h20`.
 - A nearby helper at `0x41c508` does iterate an array of 8-byte pointers at
   offset `+0x28`, but that is a different route-adjacent object type, not the
   `0x7094b8` output record captured in `outPath`.
 
+Latest route-element decode:
+
+- User clock `45:37`: Continue on the main menu.
+- User clock `46:05`: Space to continue.
+- User clock `46:15`: map opened and the usual route-click routine was run.
+- The startup/minimap route and the later explicit Claire's Garage map route
+  produced identical 18-record `ptr28` sequences, so the same solved route
+  object feeds both HUD startup and deliberate map plotting.
+- The four deliberate map routes completed as route result IDs `2` through `5`:
+  side job `12` records / final span end `68`, Sinnerman `23` records / final
+  span end `188`, Claire's Garage `18` records / final span end `86`, custom
+  pin `14` records / final span end `78`.
+- Within every route, `u10` and `u14` are monotonically increasing start/end
+  indexes into a flattened point/span buffer. The final `u14` equals
+  `gpsResult_u20` for every route.
+- `h00` is a stable per-segment handle: common route prefixes share identical
+  `h00` sequences, and the custom pin and Claire's Garage routes share their
+  first ten solved segments before diverging.
+- `u08` is packed metadata. Values appear byte-structured, for example
+  `0x00020202`, `0x01020203`, `0x02020103`, and `0x03020003`, rather than a
+  simple scalar weight.
+- `h18` splits into two 32-bit floats. The high half is consistently a sane
+  road-scale float, often in the `20` to `230` range, and is likely segment
+  length/cost-like output. The low half is usually zero or a tiny value, with
+  non-zero values appearing around the start segment.
+- `h20` has been zero in all captured full-map GPS result records.
+
+Current static producer lead:
+
+- `0x70a908` packages the route endpoints and query settings, then calls
+  `0x44cc7c`.
+- `0x44cc7c` is now the main producer corridor, not merely a generic unknown
+  helper. It allocates large scratch state, projects the query endpoints, and
+  calls deeper pathfinding routines that should decide route cost before the
+  `0x7094b8` fetch/drain path copies final result records.
+- Direct xrefs confirm `0x41be94` has only the result-copy caller
+  `0x41be69`; patching there would alter copied/displayed records after route
+  choice. The cost patch needs to happen upstream of the `0x44cc7c` result
+  construction path.
+
 Autodrive finding:
 
 - User clock `28:28` and `28:48`: enabling autodrive did not use the full
diff --git a/red4ext/EdgeWeightGPS/src/Main.cpp b/red4ext/EdgeWeightGPS/src/Main.cpp
index af80ebd..9465fd6 100644
--- a/red4ext/EdgeWeightGPS/src/Main.cpp
+++ b/red4ext/EdgeWeightGPS/src/Main.cpp
@@ -450,6 +450,13 @@ void AppendHexValue(std::ostringstream& aLine, const char* aLabel, uint64_t aVal
     aLine << " " << aLabel << "=0x" << std::hex << aValue << std::dec;
 }
 
+float FloatFromBits(uint32_t aBits)
+{
+    float value = 0.0f;
+    std::memcpy(&value, &aBits, sizeof(value));
+    return value;
+}
+
 void LogHookCall(const char* aName, uint32_t aCount, void* aThis, void* a2, void* a3, void* a4)
 {
     std::ostringstream line;
@@ -947,8 +954,12 @@ void AppendGpsResultElementArraySummary(std::ostringstream& aLine, const char* a
             continue;
         }
 
-        aLine << std::hex << h00 << "," << std::dec << u08 << "," << u0c << "," << u10 << "," << u14 << ","
-              << std::hex << h18 << "," << h20 << std::dec;
+        const auto h18Lo = static_cast<uint32_t>(h18);
+        const auto h18Hi = static_cast<uint32_t>(h18 >> 32);
+        aLine << std::hex << h00 << ",0x" << std::setw(8) << std::setfill('0') << u08 << std::setfill(fill)
+              << std::dec << "," << u0c << "," << u10 << "," << u14 << "," << std::hex << h18 << std::dec
+              << "," << FloatFromBits(h18Lo) << "," << FloatFromBits(h18Hi) << "," << std::hex << h20
+              << std::dec;
     }
     aLine << "]";
     aLine.flags(flags);