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Location: cpp/openttd-patchpack/source/src/network/network_gamelist.cpp
r6273:40c57f49e2b7
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(svn r9082) -Codechange: [win32] Update VS2003 and VS2005 project files to use the same outpath, and build in UNICODE mode. When making a release it is probably better to make two binaries, one without UNICODE, the other with, guaranteeing full Win9x compatibility (UNICODE with MSLU also works, without it's even better).
-Remove: [os/2] Relic project file remains from watcom
-Remove: [os/2] Relic project file remains from watcom
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/**
* @file network_gamelist.cpp This file handles the GameList
* Also, it handles the request to a server for data about the server
*/
#ifdef ENABLE_NETWORK
#include "../stdafx.h"
#include "../debug.h"
#include "../newgrf_config.h"
#include "../helpers.hpp"
#include "core/game.h"
#include "network_udp.h"
#include "network_gamelist.h"
#include "network_gui.h"
NetworkGameList *_network_game_list = NULL;
/** Should we stop/contiue requerying of offline servers? */
static bool _stop_requerying = false;
/** Add a new item to the linked gamelist. If the IP and Port match
* return the existing item instead of adding it again
* @param ip the IP-address (inet_addr) of the to-be added item
* @param port the port the server is running on
* @return a point to the newly added or already existing item */
NetworkGameList *NetworkGameListAddItem(uint32 ip, uint16 port)
{
NetworkGameList *item, *prev_item;
prev_item = NULL;
for (item = _network_game_list; item != NULL; item = item->next) {
if (item->ip == ip && item->port == port) return item;
prev_item = item;
}
item = MallocT<NetworkGameList>(1);
memset(item, 0, sizeof(*item));
item->next = NULL;
item->ip = ip;
item->port = port;
if (prev_item == NULL) {
_network_game_list = item;
} else {
prev_item->next = item;
}
DEBUG(net, 4, "[gamelist] added server to list");
UpdateNetworkGameWindow(false);
_stop_requerying = false;
return item;
}
/** Remove an item from the gamelist linked list
* @param remove pointer to the item to be removed */
void NetworkGameListRemoveItem(NetworkGameList *remove)
{
NetworkGameList *item, *prev_item;
prev_item = NULL;
for (item = _network_game_list; item != NULL; item = item->next) {
if (remove == item) {
if (prev_item == NULL) {
_network_game_list = remove->next;
} else {
prev_item->next = remove->next;
}
/* Remove GRFConfig information */
ClearGRFConfigList(&remove->info.grfconfig);
free(remove);
remove = NULL;
DEBUG(net, 4, "[gamelist] removed server from list");
UpdateNetworkGameWindow(false);
return;
}
prev_item = item;
}
}
enum {
MAX_GAME_LIST_REQUERY_COUNT = 5,
REQUERY_EVERY_X_GAMELOOPS = 60,
};
/** Requeries the (game) servers we have not gotten a reply from */
void NetworkGameListRequery()
{
static uint8 requery_cnt = 0;
if (_stop_requerying || ++requery_cnt < REQUERY_EVERY_X_GAMELOOPS) return;
requery_cnt = 0;
_stop_requerying = true;
struct in_addr ip;
NetworkGameList *item;
for (item = _network_game_list; item != NULL; item = item->next) {
if (item->online || item->retries >= MAX_GAME_LIST_REQUERY_COUNT) continue;
ip.s_addr = item->ip;
/* item gets mostly zeroed by NetworkUDPQueryServer */
uint8 retries = item->retries;
NetworkUDPQueryServer(inet_ntoa(ip), item->port);
item->retries = retries + 1;
_stop_requerying = false;
}
}
#endif /* ENABLE_NETWORK */
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