add DisableHunterNavi GameplayOption

config.json

@@ -53,6 +53,7 @@
     "GZennyMultiplier": 1.00,
     "MaterialMultiplier": 1.00,
     "ExtraCarves": 0,
+    "DisableHunterNavi": false,
     "EnableHiganjimaEvent": false,
     "EnableNierEvent": false,
     "DisableRoad": false

config/config.go

@@ -82,6 +82,7 @@ type GameplayOptions struct {
 	GZennyMultiplier     float32 // Adjusts the multiplier of G Zenny rewarded for quest completion
 	MaterialMultiplier   float32 // Adjusts the multiplier of Monster Materials rewarded for quest completion
 	ExtraCarves          uint16  // Grant n extra chances to carve ALL carcasses
+	DisableHunterNavi    bool    // Disables the Hunter Navi
 	EnableHiganjimaEvent bool    // Enables the Higanjima event in the Rasta Bar
 	EnableNierEvent      bool    // Enables the Nier event in the Rasta Bar
 	DisableRoad          bool    // Disables the Hunting Road

server/channelserver/handlers_quest.go

@@ -452,6 +452,10 @@ func handleMsgMhfEnumerateQuest(s *Session, p mhfpacket.MHFPacket) {
 
 	tuneValues = append(tuneValues, tuneValue{1029, s.server.erupeConfig.GameplayOptions.GUrgentRate})
 
+	if s.server.erupeConfig.GameplayOptions.DisableHunterNavi {
+		tuneValues = append(tuneValues, tuneValue{1037, 1})
+	}
+
 	if s.server.erupeConfig.GameplayOptions.EnableHiganjimaEvent {
 		tuneValues = append(tuneValues, tuneValue{1144, 1})
 	} else {