initial work on ZoneInfoMessage

common/src/main/scala/net/psforever/packet/GamePacketOpcode.scala

@@ -553,7 +553,7 @@ object GamePacketOpcode extends Enumeration {
     case 0xc3 => noDecoder(ProximityTerminalUseMessage)
     case 0xc4 => game.QuantityDeltaUpdateMessage.decode
     case 0xc5 => noDecoder(ChainLashMessage)
-    case 0xc6 => noDecoder(ZoneInfoMessage)
+    case 0xc6 => game.ZoneInfoMessage.decode
     case 0xc7 => noDecoder(LongRangeProjectileInfoMessage)
     // 0xc8
     case 0xc8 => noDecoder(WeaponLazeTargetPositionMessage)

common/src/main/scala/net/psforever/packet/game/ZoneInfoMessage.scala

@@ -0,0 +1,33 @@
+// Copyright (c) 2016 PSForever.net to present
+package net.psforever.packet.game
+
+import net.psforever.packet.{GamePacketOpcode, Marshallable, PlanetSideGamePacket}
+import scodec.Codec
+import scodec.codecs._
+
+/**
+  * na
+  * @param zone the zone id
+  * @param empire_status change the "Empire Status" text in the Interstellar Map zone description;
+  *                      `true` displays the queue availability for the avatar's empire;
+  *                      `false` display "Inactive"
+  * @param unk na;
+  *            always 0?
+  * @see `ZonePopulationUpdateMessage`
+  */
+final case class ZoneInfoMessage(zone : Int,
+                                 empire_status : Boolean,
+                                 unk : Long)
+  extends PlanetSideGamePacket {
+  type Packet = ZoneInfoMessage
+  def opcode = GamePacketOpcode.ZoneInfoMessage
+  def encode = ZoneInfoMessage.encode(this)
+}
+
+object ZoneInfoMessage extends Marshallable[ZoneInfoMessage] {
+  implicit val codec : Codec[ZoneInfoMessage] = (
+    ("zone" | uint16L) ::
+      ("empire_status" | bool) ::
+      ("unk" | uint32L)
+    ).as[ZoneInfoMessage]
+}

common/src/test/scala/GamePacketTest.scala

@@ -2182,6 +2182,28 @@ class GamePacketTest extends Specification {
       }
     }
 
+    "ZoneInfoMessage" should {
+      val string = hex"C6 0C 00 80 00 00 00 00"
+
+      "decode" in {
+        PacketCoding.DecodePacket(string).require match {
+          case ZoneInfoMessage(zone, empire_status, unk) =>
+            zone mustEqual 12
+            empire_status mustEqual true
+            unk mustEqual 0
+          case default =>
+            ko
+        }
+      }
+
+      "encode" in {
+        val msg = ZoneInfoMessage(12, true, 0)
+        val pkt = PacketCoding.EncodePacket(msg).require.toByteVector
+
+        pkt mustEqual string
+      }
+    }
+
     "PingMsg" should  {
       val packet = hex"1a 00000000 b0360000"