From ee79ba2f61a96bad4e059871afcf9c7b06b1e7a5 Mon Sep 17 00:00:00 2001
From: Kurt <kwsch@users.noreply.github.com>
Date: Thu, 16 Apr 2026 00:30:24 -0500
Subject: [PATCH] WC9: Permit 255-all hisuian zoroark size

HOME misapplying PLA's size fixing, fun. Seems it was fixed in 4.0.0 (after 3.2.1?) or server side. A last-minute redeem=>deposit was "fixed" to 255, so the full date range of the card is allowed to be mutated.
---
 PKHeX.Core/MysteryGifts/WC9.cs | 49 ++++++++++++++++++++++++----------
 1 file changed, 35 insertions(+), 14 deletions(-)

diff --git a/PKHeX.Core/MysteryGifts/WC9.cs b/PKHeX.Core/MysteryGifts/WC9.cs
index b13c1540c..385d94bb7 100644
--- a/PKHeX.Core/MysteryGifts/WC9.cs
+++ b/PKHeX.Core/MysteryGifts/WC9.cs
@@ -725,21 +725,8 @@ public override bool IsMatchExact(PKM pk, EvoCriteria evo)
 
         if (pk is IScaledSize s)
         {
-            if (!Encounter9RNG.IsHeightMatchSV(pk, (byte)HeightValue))
+            if (!IsMatchSize(pk, s))
                 return false;
-            if (s.WeightScalar != WeightValue)
-                return false;
-
-            if (!IsBeforePatch120(CardID) || (pk.MetDate is { } valid && !IsBeforePatch120(valid)))
-            {
-                // S/V 1.2.0 added scale specification.
-                if (Scale != 256)
-                {
-                    var current = pk is IScaledSize3 s3 ? s3.Scale : s.HeightScalar;
-                    if (Scale != current)
-                        return false;
-                }
-            }
         }
 
         // PID Types 0 and 1 do not use the fixed PID value.
@@ -751,6 +738,40 @@ public override bool IsMatchExact(PKM pk, EvoCriteria evo)
         return pk.PID == GetPID(pk, type);
     }
 
+    private bool IsMatchSize(PKM pk, IScaledSize s)
+    {
+        if (CardID == 1513 && s is { HeightScalar: 255, WeightScalar: 255 } and IHomeTrack { HasTracker: true })
+        {
+            // Hisiuan Zoroark was locked to 128 but could be bumped to 255 via HOME misapplying PLA's fix for Cavern alphas.
+            // This is an OK case of mismatch.
+            // This was fixed on HOME 4.0.0 update (2026, a few years after this event distribution ended), and samples could be deposited afterward (thus not requiring 255-all).
+            if (pk is not IScaledSize3 { Scale: not 255 }) // if Scale is also present, should be 255.
+                return true;
+            // Otherwise, fall through and check via usual logic, which will return false if it doesn't match 128.
+        }
+
+        // Check for strict match of Height/Weight.
+        if (!Encounter9RNG.IsHeightMatchSV(pk, (byte)HeightValue))
+            return false;
+        if (s.WeightScalar != WeightValue)
+            return false;
+
+        // S/V 1.2.0 added scale specification to all available (replaced) and future cards.
+        // If it is a pre-patch card, double check that the date was possible to redeem before the patch.
+        if (IsBeforePatch120(CardID) && (pk.MetDate is not { } valid || IsBeforePatch120(valid)))
+            return true; // No scale to check, can be anything random triangular = rand(127) + rand(128);
+
+        if (Scale == 256) // Random
+            return true; // Allowed to be random triangular.
+
+        // Check for strict match.
+        var current = pk is IScaledSize3 s3 ? s3.Scale : s.HeightScalar;
+        if (Scale != current)
+            return false;
+
+        return true; // Everything matches.
+    }
+
     private bool IsMatchTrainerName(ReadOnlySpan<byte> trainerTrash, PKM pk)
     {
         Span<char> trainerName = stackalloc char[12];