Merge branch 'player-shift'

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

@@ -543,7 +543,7 @@ object GamePacketOpcode extends Enumeration {
     case 0xbb => noDecoder(MapObjectStateBlockMessage)
     case 0xbc => noDecoder(SnoopMsg)
     case 0xbd => game.PlayerStateMessageUpstream.decode
-    case 0xbe => noDecoder(PlayerStateShiftMessage)
+    case 0xbe => game.PlayerStateShiftMessage.decode
     case 0xbf => noDecoder(ZipLineMessage)
 
     // OPCODES 0xc0-cf

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

@@ -0,0 +1,136 @@
+// 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.{Attempt, Codec, Err}
+import scodec.codecs._
+import shapeless.{::, HNil}
+
+/**
+  * Instructs an avatar to be stood, to look, and to move, in a certain way.<br>
+  * <br>
+  * The position defines a coordinate location in the avatar's current zone to which the avatar is immediately moved
+  * This movement is instantaneous and has no associated animation.
+  * If velocity is defined, the avatar is provided an "external force" that "pushes" the avatar in a given direction.
+  * This external force is not accumulative.
+  * Also, the external force is only applied once the avatar is set to the provided position.<br>
+  * <br>
+  * `viewYawLim` defines a "range of angles" that the avatar may look centered on the supplied angle.
+  * The avatar must be facing within 60-degrees of that direction, subjectively his left or his right.
+  * The avatar's view is immediately set to the closest 60-degree mark if it is outside of that range.
+  * The absolute angular displacement of the avatar is considered before applying this corrective behavior.
+  * After rotating any number of times:
+  * stopping in a valid part of the range is acceptable;
+  * stopping in an invalid part of the range will cause the avatar to align to the __earliest__ still-valid 60-degree mark.
+  * For that reason, even if the avatar's final angle is closest to the "left mark," it may re-align to the "right mark."
+  * This also resets the avatar's angular displacement.
+  * @param unk na
+  * @param pos the position to move the character to in the world environment
+  * @param viewYawLim an angle with respect to the horizon towards which the avatar is looking (to some respect)
+  * @param vel if defined, the velocity to apply to to the character at the given position
+  */
+final case class ShiftState(unk : Int,
+                            pos : Vector3,
+                            viewYawLim : Int,
+                            vel : Option[Vector3])
+
+/**
+  * Push specific motion-based stimuli on a specific character.<br>
+  * <br>
+  * `PlayerStateMessageUpstream` involves data transmitted from a client to the server regarding its avatar.
+  * `PlayerStateMessage` involves data transmitted from the server to the clients regarding characters other than that client's avatar.
+  * `PlayerStateShiftMessage` involves data transmitted from the server to a client about that client's avatar.
+  * It temporarily asserts itself before normal player movement and asserts specific placement and motion.
+  * An application of this packet is being `/warp`ed within a zone via a non-triggering agent (like a teleporter).
+  * Another, more common, application of this packet is being thrown about when the target of an attempted roadkill.
+  * @param state if defined, the behaviors to influence the character
+  * @param unk na
+  */
+final case class PlayerStateShiftMessage(state : Option[ShiftState],
+                                         unk : Option[Int] = None)
+  extends PlanetSideGamePacket {
+  type Packet = TimeOfDayMessage
+  def opcode = GamePacketOpcode.PlayerStateShiftMessage
+  def encode = PlayerStateShiftMessage.encode(this)
+}
+
+object ShiftState extends Marshallable[ShiftState] {
+  /**
+    * An abbreviated constructor for creating `ShiftState`, assuming velocity is not applied.
+    * @param unk na
+    * @param pos the position of the character in the world environment
+    * @param viewYawLim an angle with respect to the horizon towards which the avatar is looking (to some respect)
+    * @param vel the velocity to apply to to the character at the given position
+    * @return a `ShiftState` object
+    */
+  def apply(unk : Int, pos : Vector3, viewYawLim : Int, vel : Vector3) : ShiftState =
+    ShiftState(unk, pos, viewYawLim, Some(vel))
+
+  /**
+    * An abbreviated constructor for creating `ShiftState`, removing the optional condition of all parameters.
+    * @param unk na
+    * @param pos the position of the character in the world environment
+    * @param viewYawLim an angle with respect to the horizon towards which the avatar is looking (to some respect)
+    * @return a `ShiftState` object
+    */
+  def apply(unk : Int, pos : Vector3, viewYawLim : Int) : ShiftState =
+    ShiftState(unk, pos, viewYawLim, None)
+
+  implicit val codec : Codec[ShiftState] = (
+    ("unk1" | uintL(3)) ::
+      ("pos" | Vector3.codec_pos) ::
+      ("viewYawLim" | uint8L) ::
+      optional(bool, "pos" | Vector3.codec_vel)
+    ).xmap[ShiftState] (
+      {
+        case a :: b :: c :: d :: HNil =>
+          ShiftState(a, b, c, d)
+      },
+      {
+        case ShiftState(a, b, c, d) =>
+          a :: b :: c :: d :: HNil
+      }
+    ).as[ShiftState]
+}
+
+object PlayerStateShiftMessage extends Marshallable[PlayerStateShiftMessage] {
+  /**
+    * An abbreviated constructor for creating `PlayerStateShiftMessage`, removing the optional condition of `state`.
+    * @param state the behaviors to influence the character
+    * @param unk na
+    * @return a `PlayerStateShiftMessage` packet
+    */
+  def apply(state : ShiftState, unk : Int) : PlayerStateShiftMessage =
+    PlayerStateShiftMessage(Some(state), Some(unk))
+
+  /**
+    * An abbreviated constructor for creating `PlayerStateShiftMessage`, removing the optional condition of `unk2`.
+    * @param state the behaviors to influence the character
+    * @return a `PlayerStateShiftMessage` packet
+    */
+  def apply(state : ShiftState) : PlayerStateShiftMessage =
+    PlayerStateShiftMessage(Some(state), None)
+
+  /**
+    * An abbreviated constructor for creating `PlayerStateShiftMessage`, assuming the parameters `unk1` and `state` are not defined.
+    * @param unk na
+    * @return a `PlayerStateShiftMessage` packet
+    */
+  def apply(unk : Int) : PlayerStateShiftMessage =
+    PlayerStateShiftMessage(None, Some(unk))
+
+  implicit val codec : Codec[PlayerStateShiftMessage] = (
+    optional(bool, "state" | ShiftState.codec) ::
+      optional(bool, "unk" | uintL(3))
+    ).xmap[PlayerStateShiftMessage] (
+      {
+        case a :: b :: HNil =>
+          PlayerStateShiftMessage(a, b)
+      },
+      {
+        case PlayerStateShiftMessage(a, b) =>
+          a :: b :: HNil
+      }
+    ).as[PlayerStateShiftMessage]
+}