Steam SDK - Init

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unit SteamAPINewInit;

interface

uses SteamAPI;

type
  THSteamUser = int32;
  THSteamPipe = int32;


{$IFDEF Win32}
{
   Aufruf unter 32bit jeweils:
   myself: pointer;
   asm
     mov ECX, myself;
   end;
   GetISteamUser(bla);

}

  TGetISteamXYZ               = function(a,b: byte; self: pointer;              pchVersion: PAnsiChar; hSteamPipe: THSteamPipe; hSteamUser: THSteamUser): pointer; register;
  TGetISteamUtils             = function(a,b: byte; self: pointer;              pchVersion: PAnsiChar; hSteamPipe: THSteamPipe): pointer; register;
{$ENDIF}
{$IFDEF Win64}
  TGetISteamXYZ               = function(self: pointer; hSteamUser: THSteamUser; hSteamPipe: THSteamPipe; pchVersion: PAnsiChar): pointer; pascal;
  TGetISteamUtils             = function(self: pointer; hSteamPipe: THSteamPipe; pchVersion: PAnsiChar): pointer; pascal;
{$ENDIF}

  PSteamClientVTable = ^TSteamClientVTable;
  TSteamClientVTable = record
    CreateSteamPipe: pointer;
    BReleaseSteamPipe: pointer;
    ConnectToGlobalUser: pointer;
    CreateLocalUser: pointer;
    ReleaseUser: pointer;
    GetISteamUser: TGetISteamXYZ;
    GetISteamGameServer: TGetISteamXYZ;
    SetLocalIPBinding: pointer;
    GetISteamFriends: TGetISteamXYZ;
    GetISteamUtils: TGetISteamUtils;
    GetISteamMatchmaking: pointer;
    GetISteamMatchmakingServers: pointer;
    GetISteamGenericInterface: TGetISteamXYZ;
    GetISteamUserStats: TGetISteamXYZ;
    GetISteamGameServerStats: TGetISteamXYZ;
    GetISteamApps: TGetISteamXYZ;
    GetISteamNetworking: TGetISteamXYZ;
    GetISteamRemoteStorage: TGetISteamXYZ;
    GetISteamScreenshots: TGetISteamXYZ;
    RunFrame: pointer;        // valide??
    GetIPCCallCount: pointer;
    SetWarningMessageHook: pointer;
    BShutdownIfAllPipesClosed: pointer;
    GetISteamHTTP: TGetISteamXYZ;
    GetISteamUnifiedMessages: TGetISteamXYZ;
    GetISteamController: TGetISteamXYZ;
    GetISteamUGC: TGetISteamXYZ;
    GetISteamAppList: TGetISteamXYZ;
    GetISteamMusic: TGetISteamXYZ;
    GetISteamMusicRemote: TGetISteamXYZ;
    GetISteamHTMLSurface: TGetISteamXYZ;


    {

    // Helper functions for internal Steam usage
    STEAM_PRIVATE_API( virtual void DEPRECATED_Set_SteamAPI_CPostAPIResultInProcess( void (*)() ) = 0; )
    STEAM_PRIVATE_API( virtual void DEPRECATED_Remove_SteamAPI_CPostAPIResultInProcess( void (*)() ) = 0; )
    STEAM_PRIVATE_API( virtual void Set_SteamAPI_CCheckCallbackRegisteredInProcess( SteamAPI_CheckCallbackRegistered_t func ) = 0; )

    // inventory
    virtual ISteamInventory *GetISteamInventory( HSteamUser hSteamuser, HSteamPipe hSteamPipe, const char *pchVersion ) = 0;

    // Video
    virtual ISteamVideo *GetISteamVideo( HSteamUser hSteamuser, HSteamPipe hSteamPipe, const char *pchVersion ) = 0;      }
  end;

  PSteamClient = ^TSteamClient;
  TSteamClient = record
    vtable: PSteamClientVTable;
  end;


  PCSteamAPIContext = ^TCSteamAPIContext;
  TCSteamAPIContext = record
    user: THSteamUser;
    pipe: THSteamPipe;
    m_pSteamClient: PSteamClient;
    m_pSteamUser: TSteamUser;
    m_pSteamFriends: TSteamFriends;
    m_pSteamUtils: TSteamUtils;
    m_pSteamApps: TSteamApps;
    m_pSteamUGC: TSteamUGC;
    function Init: boolean;
  end;

  function SteamAPI_GetHSteamUser: THSteamUser; cdecl; external STEAM_DLL_FILENAME;
  function SteamAPI_GetHSteamPipe: THSteamPipe; cdecl; external STEAM_DLL_FILENAME;
  function SteamInternal_CreateInterface(ver: PAnsiChar): pointer; cdecl; external STEAM_DLL_FILENAME;

var
  SteamContext: TCSteamAPIContext;

implementation

{ TCSteamAPIContext }

function TCSteamAPIContext.Init: boolean;
begin
  result := false;
  user := SteamAPI_GetHSteamUser;
  pipe := SteamAPI_GetHSteamPipe;
  if pipe = 0 then
    exit;
  m_pSteamClient := PSteamClient(SteamInternal_CreateInterface('SteamClient017'));

{$IFDEF Win32}
  SteamUser :=        m_pSteamClient.vtable.GetISteamUser(0,0,m_pSteamClient,'SteamUser021', pipe, user);
  SteamUserStats :=   m_pSteamClient.vtable.GetISteamUserStats(0,0,m_pSteamClient,'STEAMUSERSTATS_INTERFACE_VERSION012', pipe, user);
  SteamFriends :=     m_pSteamClient.vtable.GetISteamFriends(0,0,m_pSteamClient,'SteamFriends017', pipe, user);
  SteamUtils :=       m_pSteamClient.vtable.GetISteamUtils(0,0,m_pSteamClient,'SteamUtils010', pipe);
  SteamUGC :=         m_pSteamClient.vtable.GetISteamUGC(0,0,m_pSteamClient,'STEAMUGC_INTERFACE_VERSION015', pipe, user);
  SteamApps :=        m_pSteamClient.vtable.GetISteamApps(0,0,m_pSteamClient,'STEAMAPPS_INTERFACE_VERSION008', pipe, user);
  SteamNetworking :=  m_pSteamClient.vtable.GetISteamNetworking(0,0,m_pSteamClient,'SteamNetworking006', pipe, user);
{$ENDIF}
{$IFDEF Win64}
  SteamUser :=        m_pSteamClient.vtable.GetISteamUser(m_pSteamClient, user, pipe, 'SteamUser021');
  SteamUserStats :=   m_pSteamClient.vtable.GetISteamUserStats(m_pSteamClient, user, pipe, 'STEAMUSERSTATS_INTERFACE_VERSION012');
  SteamFriends :=     m_pSteamClient.vtable.GetISteamFriends(m_pSteamClient, user, pipe, 'SteamFriends017');
  SteamUtils :=       m_pSteamClient.vtable.GetISteamUtils(m_pSteamClient, pipe, 'SteamUtils010');
  SteamUGC :=         m_pSteamClient.vtable.GetISteamUGC(m_pSteamClient, user, pipe, 'STEAMUGC_INTERFACE_VERSION015');
  SteamApps :=        m_pSteamClient.vtable.GetISteamApps(m_pSteamClient, user, pipe, 'STEAMAPPS_INTERFACE_VERSION008');
  SteamNetworking :=  m_pSteamClient.vtable.GetISteamNetworking(m_pSteamClient, user, pipe, 'SteamNetworking006');
{$ENDIF}

  result := true;
end;

end.