Packet: GenericCollisionMsg (#105)

* added new GenericCollisionMsg packet

* added standard comments and a message display case

* rebased GenericCollisionMsg

* minor corrections

* creating a Vector3 codec for leveraging float values

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

@@ -389,7 +389,7 @@ object GamePacketOpcode extends Enumeration {
     case 0x39 => game.ChangeFireStateMessage_Start.decode
     case 0x3a => game.ChangeFireStateMessage_Stop.decode
     case 0x3b => noDecoder(UnknownMessage59)
-    case 0x3c => noDecoder(GenericCollisionMsg)
+    case 0x3c => game.GenericCollisionMsg.decode
     case 0x3d => game.QuantityUpdateMessage.decode
     case 0x3e => game.ArmorChangedMessage.decode
     case 0x3f => noDecoder(ProjectileStateMessage)

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

@@ -0,0 +1,62 @@
+// Copyright (c) 2016 PSForever.net to present
+package net.psforever.packet.game
+
+import net.psforever.packet.{GamePacketOpcode, Marshallable, PlanetSideGamePacket}
+import net.psforever.types.Vector3
+import scodec.Codec
+import scodec.codecs._
+
+/**
+  * Dispatched by the client when the player has encountered a physical interaction that would cause damage.<br>
+  * <br>
+  * Collision information reports about two subjects who were involved in an altercation.
+  * The first is the `player`, that is, the client's avatar.
+  * The second is the `target` with respect to the `player` - whatever the avatar ran into, or whatever ran into the avatar.
+  * In the case of isolated forms of collision such as fall damage the `target` fields are blank or zero'd.
+  * @param unk1 na
+  * @param player the player or player-controlled vehicle
+  * @param target the other party in the collision
+  * @param player_health the player's health
+  * @param target_health the target's health
+  * @param player_velocity the player's velocity
+  * @param target_velocity the target's velocity
+  * @param player_pos the player's world coordinates
+  * @param target_pos the target's world coordinates
+  * @param unk2 na
+  * @param unk3 na
+  * @param unk4 na
+  */
+final case class GenericCollisionMsg(unk1 : Int,
+                                     player : PlanetSideGUID,
+                                     target : PlanetSideGUID,
+                                     player_health : Int,
+                                     target_health : Int,
+                                     player_velocity : Vector3,
+                                     target_velocity : Vector3,
+                                     player_pos : Vector3,
+                                     target_pos : Vector3,
+                                     unk2 : Long,
+                                     unk3 : Long,
+                                     unk4 : Long)
+  extends PlanetSideGamePacket {
+  type Packet = GenericCollisionMsg
+  def opcode = GamePacketOpcode.GenericCollisionMsg
+  def encode = GenericCollisionMsg.encode(this)
+}
+
+object GenericCollisionMsg extends Marshallable[GenericCollisionMsg] {
+  implicit val codec : Codec[GenericCollisionMsg] = (
+    ("unk1" | uint2) ::
+      ("p" | PlanetSideGUID.codec) ::
+      ("t" | PlanetSideGUID.codec) ::
+      ("p_health" | uint16L) ::
+      ("t_health" | uint16L) ::
+      ("p_vel" | Vector3.codec_float) ::
+      ("t_vel" | Vector3.codec_float) ::
+      ("p_pos" | Vector3.codec_pos) ::
+      ("t_pos" | Vector3.codec_pos) ::
+      ("unk2" | uint32L) ::
+      ("unk3" | uint32L) ::
+      ("unk4" | uint32L)
+    ).as[GenericCollisionMsg]
+}

common/src/main/scala/net/psforever/types/Vector3.scala

@@ -21,4 +21,10 @@ object Vector3 {
       ("y" | newcodecs.q_float(-256.0, 256.0, 14)) ::
       ("z" | newcodecs.q_float(-256.0, 256.0, 14))
     ).as[Vector3]
+
+  implicit val codec_float : Codec[Vector3] = (
+      ("x" | floatL) ::
+      ("y" | floatL) ::
+      ("z" | floatL)
+    ).as[Vector3]
 }