[General] Implement PlayerMomentum packet & associated script functions

apps/openmw-mp/Script/Functions/Positions.cpp

@@ -118,6 +118,16 @@ void PositionFunctions::SetRot(unsigned short pid, double x, double z) noexcept
     player->position.rot[2] = z;
 }
 
+void PositionFunctions::SetMomentum(unsigned short pid, double x, double y, double z) noexcept
+{
+    Player *player;
+    GET_PLAYER(pid, player, );
+
+    player->momentum.pos[0] = x;
+    player->momentum.pos[1] = y;
+    player->momentum.pos[2] = z;
+}
+
 void PositionFunctions::SendPos(unsigned short pid) noexcept
 {
     Player *player;
@@ -126,3 +136,12 @@ void PositionFunctions::SendPos(unsigned short pid) noexcept
     mwmp::Networking::get().getPlayerPacketController()->GetPacket(ID_PLAYER_POSITION)->setPlayer(player);
     mwmp::Networking::get().getPlayerPacketController()->GetPacket(ID_PLAYER_POSITION)->Send(false);
 }
+
+void PositionFunctions::SendMomentum(unsigned short pid) noexcept
+{
+    Player *player;
+    GET_PLAYER(pid, player, );
+
+    mwmp::Networking::get().getPlayerPacketController()->GetPacket(ID_PLAYER_MOMENTUM)->setPlayer(player);
+    mwmp::Networking::get().getPlayerPacketController()->GetPacket(ID_PLAYER_MOMENTUM)->Send(false);
+}

apps/openmw-mp/Script/Functions/Positions.hpp

@@ -19,8 +19,10 @@
     \
     {"SetPos",              PositionFunctions::SetPos},\
     {"SetRot",              PositionFunctions::SetRot},\
+    {"SetMomentum",         PositionFunctions::SetMomentum},\
     \
-    {"SendPos",             PositionFunctions::SendPos}
+    {"SendPos",             PositionFunctions::SendPos},\
+    {"SendMomentum",        PositionFunctions::SendMomentum}
 
 
 class PositionFunctions
@@ -144,6 +146,20 @@ public:
     */
     static void SetRot(unsigned short pid, double x, double z) noexcept;
 
+    /**
+    * \brief Set the momentum of a player.
+    *
+    * This changes the coordinates recorded for that player's momentum in the server memory, but
+    * does not by itself send a packet.
+    *
+    * \param pid The player ID.
+    * \param x The X momentum.
+    * \param y The Y momentum.
+    * \param z The Z momentum.
+    * \return void
+    */
+    static void SetMomentum(unsigned short pid, double x, double y, double z) noexcept;
+
     /**
     * \brief Send a PlayerPosition packet about a player.
     *
@@ -153,6 +169,16 @@ public:
     * \return void
     */
     static void SendPos(unsigned short pid) noexcept;
+
+    /**
+    * \brief Send a PlayerMomentum packet about a player.
+    *
+    * It is only sent to the affected player.
+    *
+    * \param pid The player ID.
+    * \return void
+    */
+    static void SendMomentum(unsigned short pid) noexcept;
 };
 
 #endif //OPENMW_POSITIONAPI_HPP

apps/openmw/mwmp/LocalPlayer.cpp

@@ -1002,6 +1002,13 @@ void LocalPlayer::setPosition()
     updateAnimFlags(true);
 }
 
+void LocalPlayer::setMomentum()
+{
+    MWBase::World *world = MWBase::Environment::get().getWorld();
+    MWWorld::Ptr ptrPlayer = world->getPlayerPtr();
+    world->setInertialForce(ptrPlayer, momentum.asVec3());
+}
+
 void LocalPlayer::setCell()
 {
     MWBase::World *world = MWBase::Environment::get().getWorld();

apps/openmw/mwmp/LocalPlayer.hpp

@@ -54,6 +54,7 @@ namespace mwmp
         void setBounty();
         void setReputation();
         void setPosition();
+        void setMomentum();
         void setCell();
         void setClass();
         void setEquipment();

apps/openmw/mwmp/processors/player/ProcessorPlayerMomentum.hpp

@@ -23,7 +23,7 @@ namespace mwmp
             if (!isRequest())
             {
                 LocalPlayer &localPlayer = static_cast<LocalPlayer&>(*player);
-                //localPlayer.setMomentum();
+                localPlayer.setMomentum();
             }
         }
     };

components/openmw-mp/Base/BasePlayer.hpp

@@ -294,6 +294,7 @@ namespace mwmp
         ESM::Position position;
         ESM::Position direction;
         ESM::Position previousCellPosition;
+        ESM::Position momentum;
         ESM::Cell cell;
         ESM::NPC npc;
         ESM::NpcStats npcStats;

components/openmw-mp/Packets/Player/PacketPlayerMomentum.cpp

@@ -12,5 +12,6 @@ PacketPlayerMomentum::PacketPlayerMomentum(RakNet::RakPeerInterface *peer) : Pla
 void PacketPlayerMomentum::Packet(RakNet::BitStream *bs, bool send)
 {
     PlayerPacket::Packet(bs, send);
-    // Placeholder
+    
+    RW(player->momentum.pos, send, 1);
 }