Merge pull request #40 from teamfisk/Networking

Networking

include/Engine/Network/Client.h

@@ -3,9 +3,12 @@
 
 #include <string>
 #include <ctime>
+#include <limits>
+#include <queue>
 
 #include <glm/common.hpp>
 #include <boost/asio.hpp>
+#include <boost/shared_array.hpp>
 
 #include "Network/Network.h"
 #include "Network/MessageType.h"
@@ -15,6 +18,8 @@
 #include "Core/EventBroker.h"
 #include "Core/ConfigFile.h"
 #include "Input/EInputCommand.h"
+#include "Core/EPlayerDamage.h"
+#include "Network/EInterpolate.h"
 
 class Client : public Network
 {
@@ -32,8 +37,6 @@ private:
     // Sending message to server logic
     int bytesRead = -1;
     char readBuf[INPUTSIZE] = { 0 };
-    int snapshotInterval = 33;
-    std::clock_t previousSnapshotMessage = std::clock();
 
     // Packet loss logic
     unsigned int m_PacketID = 0;
@@ -44,40 +47,55 @@ private:
     World* m_World;
     std::string m_PlayerName;
     int m_PlayerID = -1;
+    EntityID m_ServerEntityID = std::numeric_limits<EntityID>::max();
+    bool m_IsConnected = false;
+    // Server Client Lookup map
+    // Assumes that root node for client and server is EntityID 0.
+
+    // Don't Add items to these two maps with insert, use insertIntoServerClientMaps(EntityID, EntityID)!!!!
+    std::unordered_map<EntityID, EntityID> m_ServerIDToClientID;
+    std::unordered_map<EntityID, EntityID> m_ClientIDToServerID;
 
     // Network logic
     PlayerDefinition m_PlayerDefinitions[MAXCONNECTIONS];
     SnapshotDefinitions m_NextSnapshot;
     double m_DurationOfPingTime;
     std::clock_t m_StartPingTime;
-    // Use to check if we should send disconnect message
-    // if game is turned of by closing window.
-    bool m_WasStarted = false;
+    std::vector<Events::InputCommand> m_InputCommandBuffer;
 
     // Private member functions
     void readFromServer();
-    void sendSnapshotToServer();
     int  receive(char* data, size_t length);
     void send(Packet& packet);
     void connect();
     void disconnect();
     void ping();
-    void moveMessageHead(char*& data, size_t& length, size_t stepSize);
     void parseMessageType(Packet& packet);
-    void parseEventMessage(Packet& packet);
     void updateFields(Packet& packet, const ComponentInfo& componentInfo, const EntityID& entityID, const std::string& componentType);
     void parseConnect(Packet& packet);
+    void parsePlayerConnected(Packet& packet);
     void parsePing();
     void parseServerPing();
+    void InterpolateFields(Packet & packet, const ComponentInfo & componentInfo, const EntityID & entityID, const std::string & componentType);
     void parseSnapshot(Packet& packet);
     void identifyPacketLoss();
-    bool isConnected();
+    bool hasServerTimedOut();
     EntityID createPlayer();
+    void sendInputCommands();
+    void becomePlayer();
+    // Mapping Logic
+    // Returns if local EntityID exist in map
+    bool clientServerMapsHasEntity(EntityID clientEntityID);
+    // Returns if server EntityID exist in map
+    bool serverClientMapsHasEntity(EntityID serverEntityID);
+    void insertIntoServerClientMaps(EntityID serverEntityID, EntityID clientEntityID);
 
     // Events
     EventBroker* m_EventBroker;
     EventRelay<Client, Events::InputCommand> m_EInputCommand;
-    bool OnInputCommand(const Events::InputCommand &e);
+    bool OnInputCommand(const Events::InputCommand& e);
+    EventRelay<Client, Events::PlayerDamage> m_EPlayeDamage;
+    bool OnPlayerDamage(const Events::PlayerDamage& e);
 };
 
 #endif

include/Engine/Network/EInterpolate.h

@@ -0,0 +1,20 @@
+#ifndef Events_Interpolate_h__
+#define Events_Interpolate_h__
+
+#include <boost/shared_array.hpp>
+
+#include "Core/EventBroker.h"
+#include "Core/Entity.h"
+
+namespace Events
+{
+
+struct Interpolate : Event
+{
+    EntityID Entity;
+    boost::shared_array<char> DataArray;
+};
+
+}
+
+#endif

include/Engine/Network/MessageType.h

@@ -11,7 +11,10 @@ enum class MessageType
 	ServerPing,
 	Message,
 	Snapshot,
-	Event,
+    OnInputCommand,
+    OnPlayerDamage,
+    PlayerConnected,
+    BecomePlayer
 };
 
 #endif

include/Engine/Network/Network.h

@@ -7,6 +7,7 @@
 
 #define MAXCONNECTIONS 8
 #define INPUTSIZE 4097
+#define TIMEOUTMS 15000
 
 class Network
 {

include/Engine/Network/Packet.h

@@ -14,6 +14,7 @@ public:
     Packet(MessageType type, unsigned int& packetID);
     // Used to create packet from already existing data buffer.
     Packet(char* data, const int sizeOfPacket);
+    Packet(MessageType type);
     ~Packet();
     void Init(MessageType type, unsigned int& packetID);
 
@@ -49,7 +50,7 @@ public:
     // Pops the first element as if it was a string.
     std::string ReadString();
     char* ReadData(int SizeOfData);
-
+    void ChangePacketID(unsigned int& packetID);
     int Size() { return m_Offset; };
     char* Data() { return m_Data; };
     unsigned int DataReadSize() { return m_ReturnDataOffset; }

include/Engine/Network/PlayerDefinition.h

@@ -6,6 +6,8 @@ struct PlayerDefinition {
     int EntityID = -1;
     std::string Name = "";
     boost::asio::ip::udp::endpoint Endpoint;
+    unsigned int PacketID;
+    std::clock_t StopTime;
 };
 
 #endif

include/Engine/Network/Server.h

@@ -11,7 +11,9 @@
 #include "Network/PlayerDefinition.h"
 #include "Core/World.h"
 #include "Core/EventBroker.h"
-#include "Network/Network.h"
+#include "../Network/Network.h"
+#include "Input/EInputCommand.h"
+#include "Core/EPlayerDamage.h"
 
 class Server : public Network
 {
@@ -25,9 +27,10 @@ private:
     boost::asio::ip::udp::endpoint m_ReceiverEndpoint;
     boost::asio::io_service m_IOService;
     boost::asio::ip::udp::socket m_Socket;
-    PlayerDefinition m_PlayerDefinitions[MAXCONNECTIONS];
 
     // Sending messages to client logic
+    PlayerDefinition m_PlayerDefinitions[MAXCONNECTIONS];
+    std::vector<PlayerDefinition> m_ConnectedUsers;
     char readBuffer[INPUTSIZE] = { 0 };
     int bytesRead = 0;
     // time for previouse message
@@ -41,40 +44,38 @@ private:
 
     //Timers
     std::clock_t m_StartPingTime;
-    std::clock_t m_StopTimes[8];
 
     // Game logic
     World* m_World;
     EventBroker* m_EventBroker;
-    // vec.size() = ammount of players to create, stores playerID's
-    std::vector<unsigned int> m_PlayersToCreate;
     
     // Packet loss logic
-    unsigned int m_PacketID;
-    unsigned int m_PreviousPacketID;
-    unsigned int m_SendPacketID;
+    unsigned int m_PacketID = 0;
+    unsigned int m_PreviousPacketID = 0;
 
     // Private member functions
     int  receive(char* data, size_t length);
     void readFromClients();
     void send(Packet& packet, int playerID);
     void send(Packet& packet);
-    void moveMessageHead(char*& data, size_t& length, size_t stepSize);
-    void broadcast(std::string message);
     void broadcast(Packet& packet);
     void sendSnapshot();
     void sendPing();
     void checkForTimeOuts();
     void disconnect(int i);
     void parseMessageType(Packet& packet);
-    void parseEvent(Packet& packet);
+    void parseOnInputCommand(Packet& packet);
+    void parseOnPlayerDamage(Packet& packet);
     void parseConnect(Packet& packet);
     void parseDisconnect();
     void parseClientPing();
     void parseServerPing();
-    void parseSnapshot(Packet& packet);
     void identifyPacketLoss();
-    EntityID createPlayer();
+    void createPlayer();
+    int GetPlayerIDFromEndpoint(boost::asio::ip::udp::endpoint endpoint);
+    // Debug event
+    EventRelay<Server, Events::InputCommand> m_EInputCommand;
+    bool OnInputCommand(const Events::InputCommand& e);
 };
 
 #endif

include/Game/Game.h

@@ -19,7 +19,7 @@
 #include "Rendering/RenderSystem.h"
 #include "Core/EntityFileParser.h"
 #include "Core/Octree.h"
-
+#include "Systems/InterpolationSystem.h"
 // Network
 #include <boost/thread.hpp>
 #include "Network/Network.h"

include/Game/Systems/InterpolationSystem.h

@@ -0,0 +1,53 @@
+#ifndef Systems_InterpolationSystem_h__
+#define Systems_InterpolationSystem_h__
+
+#include <queue>
+#include <unordered_map>
+#include <boost/shared_array.hpp>
+#include <glm/common.hpp>
+#include <glm/gtc/quaternion.hpp>
+
+#include "Common.h"
+#include "Core/System.h"
+#include "Core/EventBroker.h"
+
+#include "Network/EInterpolate.h"
+
+#define SNAPSHOTINTERVAL 0.05f
+
+class InterpolationSystem : public PureSystem
+{
+    struct Transform 
+    {
+        glm::vec3 Position;
+        glm::vec3 Scale;
+        glm::quat Orientation;
+        double interpolationTime;
+    };
+public:
+    InterpolationSystem(EventBroker* eventBroker)
+        : System(eventBroker)
+        , PureSystem("Transform")
+    {
+        EVENT_SUBSCRIBE_MEMBER(m_EInterpolate, &InterpolationSystem::OnInterpolate);
+    }
+    ~InterpolationSystem() { }
+    virtual void UpdateComponent(World* world, EntityWrapper& entity, ComponentWrapper& transform, double dt) override;
+private:
+    std::unordered_map<EntityID, Transform> m_NextTransform;
+    std::unordered_map<EntityID, Transform> m_LastReceivedTransform;
+
+    //glm::vec3 vectorInterpolation(glm::vec3 prev, glm::vec3 next, double currentTime);
+    template <typename T>
+    T vectorInterpolation(T prev, T next, double currentTime)
+    {
+        T difference = next - prev;
+        T vector = (difference / SNAPSHOTINTERVAL) * static_cast<float>(currentTime);
+        return vector;
+    }
+
+    EventRelay<InterpolationSystem, Events::Interpolate> m_EInterpolate;
+    bool InterpolationSystem::OnInterpolate(const Events::Interpolate& e);
+};
+
+#endif