Add buildsys
FossilOrigin-Name: e5461ff8527693d6fead8581236f625852d55c2a3d7577e4eac219c7031e774f
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48 changed files with 6326 additions and 14 deletions
468
src/server.cxx
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468
src/server.cxx
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// server.cpp: little more than enhanced multicaster
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// runs dedicated or as client coroutine
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#include "cube.h"
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enum { ST_EMPTY, ST_LOCAL, ST_TCPIP };
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struct client // server side version of "dynent" type
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{
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int type;
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ENetPeer *peer;
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string hostname;
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string mapvote;
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string name;
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int modevote;
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};
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vector<client> clients;
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int maxclients = 8;
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string smapname;
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struct server_entity // server side version of "entity" type
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{
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bool spawned;
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int spawnsecs;
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};
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vector<server_entity> sents;
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bool notgotitems = true; // true when map has changed and waiting for clients to send item
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int mode = 0;
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void restoreserverstate(vector<entity> &ents) // hack: called from savegame code, only works in SP
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{
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loopv(sents)
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{
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sents[i].spawned = ents[i].spawned;
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sents[i].spawnsecs = 0;
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};
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};
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int interm = 0, minremain = 0, mapend = 0;
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bool mapreload = false;
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char *serverpassword = "";
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bool isdedicated;
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ENetHost * serverhost = NULL;
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int bsend = 0, brec = 0, laststatus = 0, lastsec = 0;
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#define MAXOBUF 100000
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void process(ENetPacket *packet, int sender);
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void multicast(ENetPacket *packet, int sender);
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void disconnect_client(int n, char *reason);
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void send(int n, ENetPacket *packet)
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{
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if(!packet) return;
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switch(clients[n].type)
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{
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case ST_TCPIP:
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{
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enet_peer_send(clients[n].peer, 0, packet);
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bsend += packet->dataLength;
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break;
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};
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case ST_LOCAL:
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localservertoclient(packet->data, packet->dataLength);
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break;
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};
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};
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void send2(bool rel, int cn, int a, int b)
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{
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ENetPacket *packet = enet_packet_create(NULL, 32, rel ? ENET_PACKET_FLAG_RELIABLE : 0);
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uchar *start = packet->data;
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uchar *p = start+2;
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putint(p, a);
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putint(p, b);
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*(ushort *)start = ENET_HOST_TO_NET_16(p-start);
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enet_packet_resize(packet, p-start);
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if(cn<0) process(packet, -1);
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else send(cn, packet);
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if(packet->referenceCount==0) enet_packet_destroy(packet);
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};
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void sendservmsg(char *msg)
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{
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ENetPacket *packet = enet_packet_create(NULL, _MAXDEFSTR+10, ENET_PACKET_FLAG_RELIABLE);
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uchar *start = packet->data;
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uchar *p = start+2;
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putint(p, SV_SERVMSG);
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sendstring(msg, p);
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*(ushort *)start = ENET_HOST_TO_NET_16(p-start);
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enet_packet_resize(packet, p-start);
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multicast(packet, -1);
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if(packet->referenceCount==0) enet_packet_destroy(packet);
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};
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void disconnect_client(int n, char *reason)
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{
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printf("disconnecting client (%s) [%s]\n", clients[n].hostname, reason);
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enet_peer_disconnect(clients[n].peer);
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clients[n].type = ST_EMPTY;
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send2(true, -1, SV_CDIS, n);
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};
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void resetitems() { sents.setsize(0); notgotitems = true; };
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void pickup(uint i, int sec, int sender) // server side item pickup, acknowledge first client that gets it
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{
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if(i>=(uint)sents.length()) return;
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if(sents[i].spawned)
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{
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sents[i].spawned = false;
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sents[i].spawnsecs = sec;
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send2(true, sender, SV_ITEMACC, i);
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};
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};
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void resetvotes()
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{
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loopv(clients) clients[i].mapvote[0] = 0;
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};
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bool vote(char *map, int reqmode, int sender)
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{
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strcpy_s(clients[sender].mapvote, map);
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clients[sender].modevote = reqmode;
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int yes = 0, no = 0;
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loopv(clients) if(clients[i].type!=ST_EMPTY)
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{
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if(clients[i].mapvote[0]) { if(strcmp(clients[i].mapvote, map)==0 && clients[i].modevote==reqmode) yes++; else no++; }
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else no++;
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};
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if(yes==1 && no==0) return true; // single player
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sprintf_sd(msg)("%s suggests %s on map %s (set map to vote)", clients[sender].name, modestr(reqmode), map);
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sendservmsg(msg);
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if(yes/(float)(yes+no) <= 0.5f) return false;
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sendservmsg("vote passed");
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resetvotes();
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return true;
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};
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// server side processing of updates: does very little and most state is tracked client only
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// could be extended to move more gameplay to server (at expense of lag)
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void process(ENetPacket * packet, int sender) // sender may be -1
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{
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if(ENET_NET_TO_HOST_16(*(ushort *)packet->data)!=packet->dataLength)
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{
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disconnect_client(sender, "packet length");
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return;
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};
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uchar *end = packet->data+packet->dataLength;
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uchar *p = packet->data+2;
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char text[MAXTRANS];
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int cn = -1, type;
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while(p<end) switch(type = getint(p))
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{
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case SV_TEXT:
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sgetstr();
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break;
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case SV_INITC2S:
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sgetstr();
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strcpy_s(clients[cn].name, text);
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sgetstr();
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getint(p);
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break;
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case SV_MAPCHANGE:
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{
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sgetstr();
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int reqmode = getint(p);
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if(reqmode<0) reqmode = 0;
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if(smapname[0] && !mapreload && !vote(text, reqmode, sender)) return;
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mapreload = false;
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mode = reqmode;
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minremain = mode&1 ? 15 : 10;
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mapend = lastsec+minremain*60;
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interm = 0;
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strcpy_s(smapname, text);
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resetitems();
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sender = -1;
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break;
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};
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case SV_ITEMLIST:
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{
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int n;
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while((n = getint(p))!=-1) if(notgotitems)
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{
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server_entity se = { false, 0 };
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while(sents.length()<=n) sents.add(se);
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sents[n].spawned = true;
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};
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notgotitems = false;
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break;
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};
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case SV_ITEMPICKUP:
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{
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int n = getint(p);
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pickup(n, getint(p), sender);
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break;
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};
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case SV_PING:
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send2(false, cn, SV_PONG, getint(p));
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break;
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case SV_POS:
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{
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cn = getint(p);
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if(cn<0 || cn>=clients.length() || clients[cn].type==ST_EMPTY)
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{
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disconnect_client(sender, "client num");
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return;
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};
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int size = msgsizelookup(type);
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assert(size!=-1);
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loopi(size-2) getint(p);
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break;
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};
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case SV_SENDMAP:
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{
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sgetstr();
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int mapsize = getint(p);
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sendmaps(sender, text, mapsize, p);
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return;
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}
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case SV_RECVMAP:
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send(sender, recvmap(sender));
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return;
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case SV_EXT: // allows for new features that require no server updates
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{
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for(int n = getint(p); n; n--) getint(p);
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break;
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};
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default:
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{
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int size = msgsizelookup(type);
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if(size==-1) { disconnect_client(sender, "tag type"); return; };
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loopi(size-1) getint(p);
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};
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};
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if(p>end) { disconnect_client(sender, "end of packet"); return; };
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multicast(packet, sender);
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};
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void send_welcome(int n)
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{
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ENetPacket * packet = enet_packet_create (NULL, MAXTRANS, ENET_PACKET_FLAG_RELIABLE);
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uchar *start = packet->data;
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uchar *p = start+2;
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putint(p, SV_INITS2C);
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putint(p, n);
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putint(p, PROTOCOL_VERSION);
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putint(p, smapname[0]);
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sendstring(serverpassword, p);
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putint(p, clients.length()>maxclients);
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if(smapname[0])
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{
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putint(p, SV_MAPCHANGE);
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sendstring(smapname, p);
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putint(p, mode);
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putint(p, SV_ITEMLIST);
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loopv(sents) if(sents[i].spawned) putint(p, i);
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putint(p, -1);
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};
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*(ushort *)start = ENET_HOST_TO_NET_16(p-start);
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enet_packet_resize(packet, p-start);
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send(n, packet);
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};
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void multicast(ENetPacket *packet, int sender)
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{
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loopv(clients)
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{
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if(i==sender) continue;
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send(i, packet);
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};
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};
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void localclienttoserver(ENetPacket *packet)
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{
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process(packet, 0);
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if(!packet->referenceCount) enet_packet_destroy (packet);
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};
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client &addclient()
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{
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loopv(clients) if(clients[i].type==ST_EMPTY) return clients[i];
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return clients.add();
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};
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void checkintermission()
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{
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if(!minremain)
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{
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interm = lastsec+10;
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mapend = lastsec+1000;
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};
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send2(true, -1, SV_TIMEUP, minremain--);
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};
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void startintermission() { minremain = 0; checkintermission(); };
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void resetserverifempty()
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{
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loopv(clients) if(clients[i].type!=ST_EMPTY) return;
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clients.setsize(0);
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smapname[0] = 0;
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resetvotes();
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resetitems();
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mode = 0;
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mapreload = false;
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minremain = 10;
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mapend = lastsec+minremain*60;
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interm = 0;
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};
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int nonlocalclients = 0;
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int lastconnect = 0;
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void serverslice(int seconds, unsigned int timeout) // main server update, called from cube main loop in sp, or dedicated server loop
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{
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loopv(sents) // spawn entities when timer reached
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{
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if(sents[i].spawnsecs && (sents[i].spawnsecs -= seconds-lastsec)<=0)
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{
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sents[i].spawnsecs = 0;
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sents[i].spawned = true;
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send2(true, -1, SV_ITEMSPAWN, i);
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};
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};
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lastsec = seconds;
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if((mode>1 || (mode==0 && nonlocalclients)) && seconds>mapend-minremain*60) checkintermission();
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if(interm && seconds>interm)
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{
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interm = 0;
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loopv(clients) if(clients[i].type!=ST_EMPTY)
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{
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send2(true, i, SV_MAPRELOAD, 0); // ask a client to trigger map reload
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mapreload = true;
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break;
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};
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};
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resetserverifempty();
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if(!isdedicated) return; // below is network only
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int numplayers = 0;
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loopv(clients) if(clients[i].type!=ST_EMPTY) ++numplayers;
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serverms(mode, numplayers, minremain, smapname, seconds, clients.length()>=maxclients);
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if(seconds-laststatus>60) // display bandwidth stats, useful for server ops
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{
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nonlocalclients = 0;
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loopv(clients) if(clients[i].type==ST_TCPIP) nonlocalclients++;
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laststatus = seconds;
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if(nonlocalclients || bsend || brec) printf("status: %d remote clients, %.1f send, %.1f rec (K/sec)\n", nonlocalclients, bsend/60.0f/1024, brec/60.0f/1024);
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bsend = brec = 0;
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};
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ENetEvent event;
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if(enet_host_service(serverhost, &event, timeout) > 0)
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{
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switch(event.type)
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{
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case ENET_EVENT_TYPE_CONNECT:
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{
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client &c = addclient();
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c.type = ST_TCPIP;
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c.peer = event.peer;
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c.peer->data = (void *)(&c-&clients[0]);
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char hn[1024];
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strcpy_s(c.hostname, (enet_address_get_host(&c.peer->address, hn, sizeof(hn))==0) ? hn : "localhost");
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printf("client connected (%s)\n", c.hostname);
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send_welcome(lastconnect = &c-&clients[0]);
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break;
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}
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case ENET_EVENT_TYPE_RECEIVE:
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brec += event.packet->dataLength;
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process(event.packet, (int)event.peer->data);
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if(event.packet->referenceCount==0) enet_packet_destroy(event.packet);
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break;
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case ENET_EVENT_TYPE_DISCONNECT:
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if((int)event.peer->data<0) break;
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printf("disconnected client (%s)\n", clients[(int)event.peer->data].hostname);
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clients[(int)event.peer->data].type = ST_EMPTY;
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send2(true, -1, SV_CDIS, (int)event.peer->data);
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event.peer->data = (void *)-1;
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break;
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};
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if(numplayers>maxclients)
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{
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disconnect_client(lastconnect, "maxclients reached");
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};
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};
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#ifndef _WIN32
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fflush(stdout);
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#endif
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};
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void cleanupserver()
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{
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if(serverhost) enet_host_destroy(serverhost);
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};
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void localdisconnect()
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{
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loopv(clients) if(clients[i].type==ST_LOCAL) clients[i].type = ST_EMPTY;
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};
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void localconnect()
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{
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client &c = addclient();
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c.type = ST_LOCAL;
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strcpy_s(c.hostname, "local");
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send_welcome(&c-&clients[0]);
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};
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void initserver(bool dedicated, int uprate, char *sdesc, char *ip, char *master, char *passwd, int maxcl)
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{
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serverpassword = passwd;
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maxclients = maxcl;
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servermsinit(master ? master : "wouter.fov120.com/cube/masterserver/", sdesc, dedicated);
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if(isdedicated = dedicated)
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{
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ENetAddress address = { ENET_HOST_ANY, CUBE_SERVER_PORT };
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if(*ip && enet_address_set_host(&address, ip)<0) printf("WARNING: server ip not resolved");
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serverhost = enet_host_create(&address, MAXCLIENTS, 0, uprate);
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if(!serverhost) fatal("could not create server host\n");
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loopi(MAXCLIENTS) serverhost->peers[i].data = (void *)-1;
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};
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resetserverifempty();
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if(isdedicated) // do not return, this becomes main loop
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{
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#ifdef _WIN32
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SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS);
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#endif
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printf("dedicated server started, waiting for clients...\nCtrl-C to exit\n\n");
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atexit(cleanupserver);
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atexit(enet_deinitialize);
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for(;;) serverslice(/*enet_time_get_sec()*/time(NULL), 5);
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};
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};
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