client.h

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/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
/* If you are missing that file, acquire a complete release at teeworlds.com.                */
#ifndef ENGINE_CLIENT_H
#define ENGINE_CLIENT_H
#include "graphics.h"
#include "kernel.h"
#include "message.h"
 
#include <base/hash.h>
 
#include <engine/client/enums.h>
#include <engine/friends.h>
#include <engine/shared/translation_context.h>
 
#include <generated/protocol.h>
#include <generated/protocol7.h>
 
#include <functional>
#include <optional>
 
#define CONNECTLINK_DOUBLE_SLASH "ddnet://"
#define CONNECTLINK_NO_SLASH "ddnet:"
 
struct SWarning;
 
enum
{
    RECORDER_MANUAL = 0,
    RECORDER_AUTO = 1,
    RECORDER_RACE = 2,
    RECORDER_REPLAYS = 3,
    RECORDER_MAX = 4,
};
 
typedef bool (*CLIENTFUNC_FILTER)(const void *pData, int DataSize, void *pUser);
struct CChecksumData;
 
class IClient : public IInterface
{
    MACRO_INTERFACE("client")
public:
    /* Constants: Client States
        STATE_OFFLINE - The client is offline.
        STATE_CONNECTING - The client is trying to connect to a server.
        STATE_LOADING - The client has connected to a server and is loading resources.
        STATE_ONLINE - The client is connected to a server and running the game.
        STATE_DEMOPLAYBACK - The client is playing a demo
        STATE_QUITTING - The client is quitting.
    */
 
    enum EClientState
    {
        STATE_OFFLINE = 0,
        STATE_CONNECTING,
        STATE_LOADING,
        STATE_ONLINE,
        STATE_DEMOPLAYBACK,
        STATE_QUITTING,
        STATE_RESTARTING,
    };

    enum ELoadingStateDetail
    {
        LOADING_STATE_DETAIL_INITIAL,
        LOADING_STATE_DETAIL_LOADING_MAP,
        LOADING_STATE_DETAIL_LOADING_DEMO,
        LOADING_STATE_DETAIL_SENDING_READY,
        LOADING_STATE_DETAIL_GETTING_READY,
    };
 
    enum ELoadingCallbackDetail
    {
        LOADING_CALLBACK_DETAIL_MAP,
        LOADING_CALLBACK_DETAIL_DEMO,
    };
    typedef std::function<void(ELoadingCallbackDetail Detail)> TLoadingCallback;
    CTranslationContext m_TranslationContext;
 
protected:
    // quick access to state of the client
    EClientState m_State = IClient::STATE_OFFLINE;
    ELoadingStateDetail m_LoadingStateDetail = LOADING_STATE_DETAIL_INITIAL;
    int64_t m_StateStartTime;
 
    // quick access to time variables
    int m_aPrevGameTick[NUM_DUMMIES] = {0, 0};
    int m_aCurGameTick[NUM_DUMMIES] = {0, 0};
    float m_aGameIntraTick[NUM_DUMMIES] = {0.0f, 0.0f};
    float m_aGameTickTime[NUM_DUMMIES] = {0.0f, 0.0f};
    float m_aGameIntraTickSincePrev[NUM_DUMMIES] = {0.0f, 0.0f};
 
    int m_aPredTick[NUM_DUMMIES] = {0, 0};
    float m_aPredIntraTick[NUM_DUMMIES] = {0.0f, 0.0f};
 
    float m_LocalTime = 0.0f;
    float m_GlobalTime = 0.0f;
    float m_RenderFrameTime = 0.0001f;
    float m_FrameTimeAverage = 0.0001f;
 
    TLoadingCallback m_LoadingCallback = nullptr;
 
    char m_aNews[3000] = "";
    int m_Points = -1;
    int64_t m_ReconnectTime = 0;
 
public:
    class CSnapItem
    {
    public:
        int m_Type;
        int m_Id;
        const void *m_pData;
        int m_DataSize;
    };
 
    enum
    {
        CONN_MAIN = 0,
        CONN_DUMMY,
        CONN_CONTACT,
        NUM_CONNS,
    };
 
    enum
    {
        CONNECTIVITY_UNKNOWN,
        CONNECTIVITY_CHECKING,
        CONNECTIVITY_UNREACHABLE,
        CONNECTIVITY_REACHABLE,
        // Different global IP address has been detected for UDP and
        // TCP connections.
        CONNECTIVITY_DIFFERING_UDP_TCP_IP_ADDRESSES,
    };
 
    //
    EClientState State() const { return m_State; }
    ELoadingStateDetail LoadingStateDetail() const { return m_LoadingStateDetail; }
    int64_t StateStartTime() const { return m_StateStartTime; }
    void SetLoadingStateDetail(ELoadingStateDetail LoadingStateDetail) { m_LoadingStateDetail = LoadingStateDetail; }
 
    void SetLoadingCallback(TLoadingCallback &&Func) { m_LoadingCallback = std::move(Func); }
 
    // Game time.
    //
    // There are 50 ticks per second, by default we only send snapshot on
    // every second tick.
 
    // Tick of the second to most recently received snapshot (usually 2
    // less than `GameTick`).
    int PrevGameTick(int Conn) const { return m_aPrevGameTick[Conn]; }
    // Tick of most recently received snapshot.
    int GameTick(int Conn) const { return m_aCurGameTick[Conn]; }
    // The tick we should predict to. Comes from a magic black box called
    // "smooth time".
    int PredGameTick(int Conn) const { return m_aPredTick[Conn]; }
    // Linear interpolation parameter between `PrevGameTick` (0) and
    // `GameTick` (1). Can be outside the interval [0, 1].
    float IntraGameTick(int Conn) const { return m_aGameIntraTick[Conn]; }
    // Linear interpolation parameter between `PredGameTick - 1` (0) and
    // `PredGameTick` (1). Can be outside the interval [0, 1].
    float PredIntraGameTick(int Conn) const { return m_aPredIntraTick[Conn]; }
    // (Fractional) ticks since `PrevGameTick`.
    float IntraGameTickSincePrev(int Conn) const { return m_aGameIntraTickSincePrev[Conn]; }
    // Time in seconds since the second to most recently received snapshot.
    float GameTickTime(int Conn) const { return m_aGameTickTime[Conn]; }
    // 50
    int GameTickSpeed() const { return SERVER_TICK_SPEED; }
 
    // Other time.
 
    // Time in seconds since a map was joined, or `GlobalTime` if that
    // hasn't happened yet.
    float LocalTime() const { return m_LocalTime; }
    // Time in seconds since the client was opened.
    float GlobalTime() const { return m_GlobalTime; }
 
    // Render statistics.
 
    // Duration in seconds of the previous render cycle.
    float RenderFrameTime() const { return m_RenderFrameTime; }
    // Exponentially weighted average of frame times.
    float FrameTimeAverage() const { return m_FrameTimeAverage; }
 
    // actions
    virtual void Connect(const char *pAddress, const char *pPassword = nullptr) = 0;
    virtual void Disconnect() = 0;
 
    // dummy
    virtual void DummyDisconnect(const char *pReason) = 0;
    virtual void DummyConnect() = 0;
    virtual bool DummyConnected() const = 0;
    virtual bool DummyConnecting() const = 0;
    virtual bool DummyConnectingDelayed() const = 0;
    virtual bool DummyAllowed() const = 0;
 
    virtual void Restart() = 0;
    virtual void Quit() = 0;
    virtual const char *DemoPlayer_Play(const char *pFilename, int StorageType) = 0;
#if defined(CONF_VIDEORECORDER)
    virtual const char *DemoPlayer_Render(const char *pFilename, int StorageType, const char *pVideoName, int SpeedIndex, bool StartPaused = false) = 0;
#endif
    virtual void DemoRecorder_Start(const char *pFilename, bool WithTimestamp, int Recorder) = 0;
    virtual void DemoRecorder_HandleAutoStart() = 0;
    virtual void DemoRecorder_UpdateReplayRecorder() = 0;
    virtual class IDemoRecorder *DemoRecorder(int Recorder) = 0;
    virtual void AutoScreenshot_Start() = 0;
    virtual void AutoStatScreenshot_Start() = 0;
    virtual void AutoCSV_Start() = 0;
    virtual void ServerBrowserUpdate() = 0;
 
    // gfx
    virtual void Notify(const char *pTitle, const char *pMessage) = 0;
    virtual void OnWindowResize() = 0;
 
    virtual void UpdateAndSwap() = 0;
 
    // networking
    virtual void EnterGame(int Conn) = 0;
 
    //
    virtual const NETADDR &ServerAddress() const = 0;
    virtual int ConnectNetTypes() const = 0;
    virtual const char *ConnectAddressString() const = 0;
    virtual const char *MapDownloadName() const = 0;
    virtual int MapDownloadAmount() const = 0;
    virtual int MapDownloadTotalsize() const = 0;
 
    // input
    virtual int *GetInput(int Tick, int IsDummy = 0) const = 0;
 
    // remote console
    virtual void RconAuth(const char *pUsername, const char *pPassword, bool Dummy) = 0;
    virtual bool RconAuthed() const = 0;
    virtual bool UseTempRconCommands() const = 0;
    virtual void Rcon(const char *pLine) = 0;
    virtual bool ReceivingRconCommands() const = 0;
    virtual float GotRconCommandsPercentage() const = 0;
    virtual bool ReceivingMaplist() const = 0;
    virtual float GotMaplistPercentage() const = 0;
    virtual const std::vector<std::string> &MaplistEntries() const = 0;
 
    // server info
    virtual void GetServerInfo(class CServerInfo *pServerInfo) const = 0;
    virtual bool ServerCapAnyPlayerFlag() const = 0;
 
    virtual int GetPredictionTime() = 0;
    virtual int GetPredictionTick() = 0;
 
    // snapshot interface
 
    enum
    {
        SNAP_CURRENT = 0,
        SNAP_PREV = 1,
        NUM_SNAPSHOT_TYPES = 2,
    };
 
    // TODO: Refactor: should redo this a bit i think, too many virtual calls
    virtual int SnapNumItems(int SnapId) const = 0;
    virtual const void *SnapFindItem(int SnapId, int Type, int Id) const = 0;
    virtual CSnapItem SnapGetItem(int SnapId, int Index) const = 0;
 
    virtual void SnapSetStaticsize(int ItemType, int Size) = 0;
    virtual void SnapSetStaticsize7(int ItemType, int Size) = 0;
 
    virtual int SendMsg(int Conn, CMsgPacker *pMsg, int Flags) = 0;
    virtual int SendMsgActive(CMsgPacker *pMsg, int Flags) = 0;
 
    template<class T>
    int SendPackMsgActive(T *pMsg, int Flags, bool NoTranslate = false)
    {
        CMsgPacker Packer(T::ms_MsgId, false, NoTranslate);
        if(pMsg->Pack(&Packer))
            return -1;
        return SendMsgActive(&Packer, Flags);
    }
 
    template<class T>
    int SendPackMsg(int Conn, T *pMsg, int Flags, bool NoTranslate = false)
    {
        CMsgPacker Packer(T::ms_MsgId, false, NoTranslate);
        if(pMsg->Pack(&Packer))
            return -1;
        return SendMsg(Conn, &Packer, Flags);
    }
 
    //
    virtual const char *PlayerName() const = 0;
    virtual const char *DummyName() = 0;
    virtual const char *ErrorString() const = 0;
    virtual const char *LatestVersion() const = 0;
    virtual bool ConnectionProblems() const = 0;
 
    virtual IGraphics::CTextureHandle GetDebugFont() const = 0; // TODO: remove this function
 
    // DDRace
 
    virtual const char *GetCurrentMap() const = 0;
    virtual const char *GetCurrentMapPath() const = 0;
    virtual SHA256_DIGEST GetCurrentMapSha256() const = 0;
    virtual unsigned GetCurrentMapCrc() const = 0;
 
    const char *News() const { return m_aNews; }
    int Points() const { return m_Points; }
    int64_t ReconnectTime() const { return m_ReconnectTime; }
    void SetReconnectTime(int64_t ReconnectTime) { m_ReconnectTime = ReconnectTime; }
 
    virtual bool IsSixup() const = 0;
 
    virtual void RaceRecord_Start(const char *pFilename) = 0;
    virtual void RaceRecord_Stop() = 0;
    virtual bool RaceRecord_IsRecording() = 0;
 
    virtual void DemoSliceBegin() = 0;
    virtual void DemoSliceEnd() = 0;
    virtual void DemoSlice(const char *pDstPath, CLIENTFUNC_FILTER pfnFilter, void *pUser) = 0;
 
    enum class EInfoState
    {
        LOADING,
        SUCCESS,
        ERROR,
    };
    virtual EInfoState InfoState() const = 0;
    virtual void RequestDDNetInfo() = 0;
    virtual bool EditorHasUnsavedData() const = 0;
 
    virtual void GenerateTimeoutSeed() = 0;
 
    virtual IFriends *Foes() = 0;
 
    virtual void GetSmoothTick(int *pSmoothTick, float *pSmoothIntraTick, float MixAmount) = 0;
 
    virtual void AddWarning(const SWarning &Warning) = 0;
    virtual std::optional<SWarning> CurrentWarning() = 0;
 
    virtual CChecksumData *ChecksumData() = 0;
    virtual int UdpConnectivity(int NetType) = 0;

    virtual bool ViewLink(const char *pLink) = 0;
    virtual bool ViewFile(const char *pFilename) = 0;
 
#if defined(CONF_FAMILY_WINDOWS)
    virtual void ShellRegister() = 0;
    virtual void ShellUnregister() = 0;
#endif
 
    virtual std::optional<int> ShowMessageBox(const IGraphics::CMessageBox &MessageBox) = 0;
    virtual void GetGpuInfoString(char (&aGpuInfo)[512]) = 0;
};
 
class IGameClient : public IInterface
{
    MACRO_INTERFACE("gameclient")
protected:
public:
    virtual void OnConsoleInit() = 0;
 
    virtual void OnRconType(bool UsernameReq) = 0;
    virtual void OnRconLine(const char *pLine) = 0;
    virtual void OnInit() = 0;
    virtual void InvalidateSnapshot() = 0;
    virtual void OnNewSnapshot() = 0;
    virtual void OnEnterGame() = 0;
    virtual void OnShutdown() = 0;
    virtual void OnRender() = 0;
    virtual void OnUpdate() = 0;
    virtual void OnStateChange(int NewState, int OldState) = 0;
    virtual void OnConnected() = 0;
    virtual void OnMessage(int MsgId, CUnpacker *pUnpacker, int Conn, bool Dummy) = 0;
    virtual void OnPredict() = 0;
    virtual void OnActivateEditor() = 0;
    virtual void OnWindowResize() = 0;
 
    virtual int OnSnapInput(int *pData, bool Dummy, bool Force) = 0;
    virtual void OnDummySwap() = 0;
    virtual void SendDummyInfo(bool Start) = 0;
 
    virtual const char *GetItemName(int Type) const = 0;
    virtual const char *Version() const = 0;
    virtual const char *NetVersion() const = 0;
    virtual const char *NetVersion7() const = 0;
    virtual int DDNetVersion() const = 0;
    virtual const char *DDNetVersionStr() const = 0;
 
    virtual void OnDummyDisconnect() = 0;
    virtual void DummyResetInput() = 0;
    virtual void Echo(const char *pString) = 0;
 
    virtual bool CanDisplayWarning() const = 0;
    virtual void RenderShutdownMessage() = 0;
 
    virtual CNetObjHandler *GetNetObjHandler() = 0;
    virtual protocol7::CNetObjHandler *GetNetObjHandler7() = 0;
 
    virtual int ClientVersion7() const = 0;
 
    virtual void ApplySkin7InfoFromSnapObj(const protocol7::CNetObj_De_ClientInfo *pObj, int ClientId) = 0;
    virtual int OnDemoRecSnap7(class CSnapshot *pFrom, class CSnapshot *pTo, int Conn) = 0;
    virtual int TranslateSnap(class CSnapshot *pSnapDstSix, class CSnapshot *pSnapSrcSeven, int Conn, bool Dummy) = 0;
    virtual void ProcessDemoSnapshot(class CSnapshot *pSnap) = 0;
 
    virtual void InitializeLanguage() = 0;
 
    virtual void ForceUpdateConsoleRemoteCompletionSuggestions() = 0;
};
 
extern IGameClient *CreateGameClient();
#endif