From 72b5d319f1c030a8dcfb5dc013ea006002c93d2e Mon Sep 17 00:00:00 2001
From: Houmgaor <contact@houmgaor.com>
Date: Tue, 10 Mar 2026 13:37:54 +0100
Subject: [PATCH] refactor: rename GetStepupStatus Unk field to GachaType

Ghidra decompilation of mhfo-hd.dll shows all gacha packets use a
trailing uint8 for gacha type (0=normal, 1=stepup, 4=box). The server
ignores it since it derives the type from GachaID.
---
 network/mhfpacket/msg_mhf_get_stepup_status.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/network/mhfpacket/msg_mhf_get_stepup_status.go b/network/mhfpacket/msg_mhf_get_stepup_status.go
index dcced8f4f..58b6f2a7d 100644
--- a/network/mhfpacket/msg_mhf_get_stepup_status.go
+++ b/network/mhfpacket/msg_mhf_get_stepup_status.go
@@ -12,7 +12,7 @@ import (
 type MsgMhfGetStepupStatus struct {
 	AckHandle uint32
 	GachaID   uint32
-	Unk       uint8
+	GachaType uint8 // 0=normal, 1=stepup, 4=box (redundant — server derives from GachaID)
 }
 
 // Opcode returns the ID associated with this packet type.
@@ -24,7 +24,7 @@ func (m *MsgMhfGetStepupStatus) Opcode() network.PacketID {
 func (m *MsgMhfGetStepupStatus) Parse(bf *byteframe.ByteFrame, ctx *clientctx.ClientContext) error {
 	m.AckHandle = bf.ReadUint32()
 	m.GachaID = bf.ReadUint32()
-	m.Unk = bf.ReadUint8()
+	m.GachaType = bf.ReadUint8()
 	return nil
 }