Packet: ObjectDetachMessage (#116)

* initial ObjectDetachMessage packet and tests

* discovered how to orient the dropped item

common/src/test/scala/game/ObjectDetachMessageTest.scala

@@ -0,0 +1,35 @@
+// Copyright (c) 2017 PSForever
+package game
+
+import org.specs2.mutable._
+import net.psforever.packet._
+import net.psforever.packet.game._
+import net.psforever.types.Vector3
+import scodec.bits._
+
+class ObjectDetachMessageTest extends Specification {
+  val string = hex"27 640B C609 92F76 01D65 F611 00 00 40"
+
+  "decode" in {
+    PacketCoding.DecodePacket(string).require match {
+      case ObjectDetachMessage(parent_guid, child_guid, pos, roll, pitch, yaw) =>
+        parent_guid mustEqual PlanetSideGUID(2916)
+        child_guid mustEqual PlanetSideGUID(2502)
+        pos.x mustEqual 3567.1406f
+        pos.y mustEqual 2988.0078f
+        pos.z mustEqual 71.84375f
+        roll mustEqual 0
+        pitch mustEqual 0
+        yaw mustEqual 64
+      case _ =>
+        ko
+    }
+  }
+
+  "encode" in {
+    val msg = ObjectDetachMessage(PlanetSideGUID(2916), PlanetSideGUID(2502), Vector3(3567.1406f, 2988.0078f, 71.84375f), 0, 0, 64)
+    val pkt = PacketCoding.EncodePacket(msg).require.toByteVector
+
+    pkt mustEqual string
+  }
+}