initial ProjectileStateMessage packet and tests

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

@@ -392,7 +392,7 @@ object GamePacketOpcode extends Enumeration {
     case 0x3c => game.GenericCollisionMsg.decode
     case 0x3d => game.QuantityUpdateMessage.decode
     case 0x3e => game.ArmorChangedMessage.decode
-    case 0x3f => noDecoder(ProjectileStateMessage)
+    case 0x3f => game.ProjectileStateMessage.decode
 
     // OPCODES 0x40-4f
     case 0x40 => noDecoder(MountVehicleCargoMsg)

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

@@ -0,0 +1,47 @@
+// Copyright (c) 2017 PSForever
+package net.psforever.packet.game
+
+import net.psforever.packet.{GamePacketOpcode, Marshallable, PlanetSideGamePacket}
+import net.psforever.types.Vector3
+import scodec.Codec
+import scodec.codecs._
+
+/**
+  * Dispatched from the server to render the projectiles of one player's weapon on other players' clients.
+  * @param projectile_guid the projectile
+  * @param origin a spawning position for the projectile
+  * @param orient a directional heading for the projectile
+  * @param unk1 na;
+  *             rarely not 0
+  * @param unk2 na
+  * @param unk3 na
+  * @param unk4 na;
+  *             rarely not false
+  * @param unk5 na
+  */
+final case class ProjectileStateMessage(projectile_guid : PlanetSideGUID,
+                                        origin : Vector3,
+                                        orient : Vector3,
+                                        unk1 : Int,
+                                        unk2 : Int,
+                                        unk3 : Int,
+                                        unk4 : Boolean,
+                                        unk5 : Int)
+  extends PlanetSideGamePacket {
+  type Packet = ProjectileStateMessage
+  def opcode = GamePacketOpcode.ProjectileStateMessage
+  def encode = ProjectileStateMessage.encode(this)
+}
+
+object ProjectileStateMessage extends Marshallable[ProjectileStateMessage] {
+  implicit val codec : Codec[ProjectileStateMessage] = (
+    ("projectile_guid" | PlanetSideGUID.codec) ::
+      ("origin" | Vector3.codec_pos) ::
+      ("orient" | Vector3.codec_float) ::
+      ("unk1" | uint8L) ::
+      ("unk2" | uint8L) ::
+      ("unk3" | uint8L) ::
+      ("unk4" | bool) ::
+      ("unk5" | uint16L)
+    ).as[ProjectileStateMessage]
+}