lobby.c

2D即时战略游戏VC源码

/*==========================================================================
 *
 *  Copyright (C) 1995-1996 Microsoft Corporation. All Rights Reserved.
 *
 *  File:       lobby.c
 *  Content:    DirectPlayLobby related code
 *
 *
 ***************************************************************************/
#include "lobby.h"

/*
 * Externals
 */
extern LPDIRECTPLAY2                glpDP;                  // directplay object pointer

/*
 * Globals
 */
LPDPLCONNECTION                     glpdplConnection;       // connection settings

/*
 * Statics
 */
static LPDIRECTPLAYLOBBY            glpDPL;                 // lobby object pointer



/*
 * DPLobbyCreate
 *
 * Wrapper for DirectPlayLobby DirectPlayLobbyCreate API.
 */
HRESULT DPLobbyCreate(void)
{
    HRESULT hr=E_FAIL;

    hr = DirectPlayLobbyCreate(NULL, &glpDPL, NULL, NULL, 0);   

    return hr;
}

/*
 * DPLobbyConnect
 *
 * Wrapper for DirectPlayLobby Connect API.
 */
HRESULT DPLobbyConnect(void)
{
    HRESULT hr=E_FAIL;

    hr = IDirectPlayLobby_Connect(glpDPL, 0, &glpDP, NULL) ;    

    return hr;
}

/*
 * DPLobbyGetConnectionSettings
 *
 * Wrapper for DirectPlayLobby GetConnectionSettings API
 */
HRESULT DPLobbyGetConnectionSettings(void)
{
    HRESULT hr=E_FAIL;
    DWORD dwSize;

    if (glpDPL)
    {
        // get size for the connection settings structure
        hr = IDirectPlayLobby_GetConnectionSettings(glpDPL, 0, NULL, &dwSize);
        if (DPERR_BUFFERTOOSMALL == hr)
        { 
            // if we already have one, free it
            if (glpdplConnection)
            {
                free(glpdplConnection);
                glpdplConnection = NULL;
            }

            // allocate memory for the new one
            glpdplConnection = (LPDPLCONNECTION) malloc(dwSize);

            // get the connection settings
            if (glpdplConnection)
                hr = IDirectPlayLobby_GetConnectionSettings(glpDPL, 0, glpdplConnection, &dwSize);
        }
    }

    return hr;
}

/*
 * DPLobbyRelease
 *
 * Wrapper for DirectPlayLobby Release API
 */
HRESULT DPLobbyRelease(void)
{
    HRESULT hr=E_FAIL;

    // free our connection settings
    if (glpdplConnection)
    {
        free(glpdplConnection);
        glpdplConnection = NULL;
    }

    // release the lobby object
    if (glpDPL)
    {
        hr = IDirectPlayLobby_Release(glpDPL);
        glpDPL = NULL;
    }
    return hr;
}

/*
 * DPLobbySetConnectionSettings
 *
 * Wrapper for DirectPlayLobby SetConnectionSettings API
 */
HRESULT DPLobbySetConnectionSettings(void)
{
    HRESULT hr=E_FAIL;

    hr = IDirectPlayLobby_SetConnectionSettings(glpDPL, 0, 0, glpdplConnection);

    return hr;
}