/*
* This file is part of the DXX-Rebirth project .
* It is copyright by its individual contributors, as recorded in the
* project's Git history. See COPYING.txt at the top level for license
* terms and a link to the Git history.
*/
/*
*
* Routines for managing UDP-protocol network play.
*
*/
#include
#include
#include
#include "pstypes.h"
#include "window.h"
#include "strutil.h"
#include "args.h"
#include "timer.h"
#include "newmenu.h"
#include "key.h"
#include "gauges.h"
#include "object.h"
#include "dxxerror.h"
#include "laser.h"
#include "gamesave.h"
#include "gamemine.h"
#include "player.h"
#include "gameseq.h"
#include "fireball.h"
#include "net_udp.h"
#include "game.h"
#include "multi.h"
#include "endlevel.h"
#include "palette.h"
#include "cntrlcen.h"
#include "powerup.h"
#include "menu.h"
#include "gameseg.h"
#include "sounds.h"
#include "text.h"
#include "kmatrix.h"
#include "newdemo.h"
#include "multibot.h"
#include "wall.h"
#include "bm.h"
#include "effects.h"
#include "physics.h"
#include "hudmsg.h"
#include "switch.h"
#include "automap.h"
#include "event.h"
#include "playsave.h"
#include "gamefont.h"
#include "rbaudio.h"
#include "config.h"
#include "vers_id.h"
#include "u_mem.h"
#include "dxxsconf.h"
#include "compiler-array.h"
#include "compiler-exchange.h"
#include "compiler-range_for.h"
#include "compiler-lengthof.h"
#include "compiler-static_assert.h"
#include "partial_range.h"
#if defined(DXX_BUILD_DESCENT_I)
#define UDP_REQ_ID "D1XR" // ID string for a request packet
#elif defined(DXX_BUILD_DESCENT_II)
#define UDP_REQ_ID "D2XR" // ID string for a request packet
#endif
// player position packet structure
struct UDP_frame_info : prohibit_void_ptr
{
ubyte type;
ubyte Player_num;
ubyte connected;
quaternionpos qpp;
};
// Prototypes
static void net_udp_init();
static void net_udp_close();
static void net_udp_listen();
namespace dsx {
static int net_udp_show_game_info();
static int net_udp_do_join_game();
}
static void net_udp_flush();
namespace dsx {
static void net_udp_update_netgame(void);
static void net_udp_send_objects(void);
static void net_udp_send_rejoin_sync(unsigned player_num);
static void net_udp_do_refuse_stuff (UDP_sequence_packet *their);
static void net_udp_read_sync_packet(const uint8_t *data, uint_fast32_t data_len, const _sockaddr &sender_addr);
}
static void net_udp_ping_frame(fix64 time);
static void net_udp_process_ping(const uint8_t *data, const _sockaddr &sender_addr);
static void net_udp_process_pong(const uint8_t *data, const _sockaddr &sender_addr);
static void net_udp_read_endlevel_packet(const uint8_t *data, const _sockaddr &sender_addr);
static void net_udp_send_mdata(int needack, fix64 time);
static void net_udp_process_mdata (uint8_t *data, uint_fast32_t data_len, const _sockaddr &sender_addr, int needack);
static void net_udp_send_pdata();
static void net_udp_process_pdata (const uint8_t *data, uint_fast32_t data_len, const _sockaddr &sender_addr);
static void net_udp_read_pdata_packet(UDP_frame_info *pd);
static void net_udp_timeout_check(fix64 time);
static int net_udp_get_new_player_num ();
static void net_udp_noloss_got_ack(const uint8_t *data, uint_fast32_t data_len);
static void net_udp_noloss_init_mdata_queue(void);
static void net_udp_noloss_clear_mdata_trace(ubyte player_num);
static void net_udp_noloss_process_queue(fix64 time);
namespace dsx {
static void net_udp_send_extras ();
}
static void net_udp_broadcast_game_info(ubyte info_upid);
namespace dsx {
static void net_udp_process_game_info(const uint8_t *data, uint_fast32_t data_len, const _sockaddr &game_addr, int lite_info, uint16_t TrackerGameID = 0);
}
static int net_udp_start_game(void);
// Variables
static int UDP_num_sendto, UDP_len_sendto, UDP_num_recvfrom, UDP_len_recvfrom;
static UDP_mdata_info UDP_MData;
static UDP_sequence_packet UDP_Seq;
static unsigned UDP_mdata_queue_highest;
static array UDP_mdata_queue;
static array UDP_mdata_trace;
static UDP_sequence_packet UDP_sync_player; // For rejoin object syncing
static array Active_udp_games;
static unsigned num_active_udp_games;
static int num_active_udp_changed;
static uint16_t UDP_MyPort;
static sockaddr_in GBcast; // global Broadcast address clients and hosts will use for lite_info exchange over LAN
#define UDP_BCAST_ADDR "255.255.255.255"
#if DXX_USE_IPv6
#define UDP_MCASTv6_ADDR "ff02::1"
static sockaddr_in6 GMcast_v6; // same for IPv6-only
#define dispatch_sockaddr_from from.sin6
#else
#define dispatch_sockaddr_from from.sin
#endif
#if DXX_USE_TRACKER
static _sockaddr TrackerSocket;
enum class TrackerAckState : uint8_t
{
TACK_NOCONNECTION, // No connection with tracker (yet);
TACK_INTERNAL = 1, // Got ACK on TrackerSocket
TACK_EXTERNAL = 2, // Got ACK on our game sopcket
TACK_SEQCOMPL = 3, // We had enough time to get all acks. If we missed something now, tell the user
};
static TrackerAckState TrackerAckStatus;
static fix64 TrackerAckTime;
static int udp_tracker_init();
static int udp_tracker_unregister();
namespace dsx {
static int udp_tracker_register();
static int udp_tracker_reqgames();
}
static int udp_tracker_process_game( ubyte *data, int data_len, const _sockaddr &sender_addr );
static void udp_tracker_process_ack( ubyte *data, int data_len, const _sockaddr &sender_addr );
static void udp_tracker_verify_ack_timeout();
static void udp_tracker_request_holepunch( uint16_t TrackerGameID );
static void udp_tracker_process_holepunch( ubyte *data, int data_len, const _sockaddr &sender_addr );
#endif
static fix64 StartAbortMenuTime;
#ifndef _WIN32
constexpr std::integral_constant INVALID_SOCKET{};
#endif
namespace {
class RAIIsocket
{
#ifndef _WIN32
typedef int SOCKET;
int closesocket(SOCKET fd)
{
return close(fd);
}
#endif
SOCKET s;
public:
constexpr RAIIsocket() : s(INVALID_SOCKET)
{
}
RAIIsocket(int domain, int type, int protocol) : s(socket(domain, type, protocol))
{
}
RAIIsocket(const RAIIsocket &) = delete;
RAIIsocket &operator=(const RAIIsocket &) = delete;
RAIIsocket &operator=(RAIIsocket &&) = delete;
~RAIIsocket()
{
reset();
}
/* This should be a move-assignment operator=, but early versions of
* gcc-4.9 mishandle synthesizing array::operator=(array &&)
* when the contained type is movable but not copyable. Debian
* Jessie's newest gcc is still affected (18 months after the fix
* was published upstream), so use awkward syntax here to avoid the
* problem.
*
* https://github.com/dxx-rebirth/dxx-rebirth/issues/289
* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66501
*/
void move(RAIIsocket &&r)
{
std::swap(s, r.s);
}
void reset()
{
if (s != INVALID_SOCKET)
closesocket(exchange(s, INVALID_SOCKET));
}
explicit operator bool() const { return s != INVALID_SOCKET; }
explicit operator bool() { return static_cast(*const_cast(this)); }
operator SOCKET() { return s; }
template bool operator<(T) const = delete;
template bool operator<=(T) const = delete;
template bool operator>(T) const = delete;
template bool operator>=(T) const = delete;
template bool operator==(T) const = delete;
template bool operator!=(T) const = delete;
};
#ifdef DXX_HAVE_GETADDRINFO
class RAIIaddrinfo
{
struct deleter
{
void operator()(addrinfo *p) const
{
freeaddrinfo(p);
}
};
std::unique_ptr result;
public:
int getaddrinfo(const char *node, const char *service, const addrinfo *hints)
{
addrinfo *p = nullptr;
int r = ::getaddrinfo(node, service, hints, &p);
result.reset(p);
return r;
}
addrinfo *get() { return result.get(); }
addrinfo *operator->() { return result.operator->(); }
};
#endif
class start_poll_menu_items
{
/* The host must play */
unsigned playercount = 1;
public:
array m;
unsigned get_player_count() const
{
return playercount;
}
void set_player_count(const unsigned c)
{
playercount = c;
}
};
}
namespace dcx {
static const char *dxx_ntop(const _sockaddr &sa, array &dbuf)
{
#ifdef WIN32
#ifdef DXX_HAVE_INET_NTOP
/*
* Windows and inet_ntop: copy the in_addr/in6_addr to local
* variables because the Microsoft prototype lacks a const
* qualifier.
*/
union {
in_addr ia;
#if DXX_USE_IPv6
in6_addr ia6;
#endif
};
const auto addr =
#if DXX_USE_IPv6
(sa.sa.sa_family == AF_INET6)
? &(ia6 = sa.sin6.sin6_addr)
:
#endif
static_cast(&(ia = sa.sin.sin_addr));
#else
/*
* Windows and not inet_ntop: only inet_ntoa available.
*
* SConf check_inet_ntop_present enforces that Windows without
* inet_ntop cannot enable IPv6, so the IPv4 branch must be correct
* here.
*
* The reverse is not true. Windows with inet_ntop might not enable
* IPv6.
*/
#if DXX_USE_IPv6
#error "IPv6 requires inet_ntop; SConf should prevent this path"
#endif
dbuf.back() = 0;
/*
* Copy the formatted string to the local buffer `dbuf` to guard
* against concurrent uses of `dxx_ntop`.
*/
return reinterpret_cast(memcpy(dbuf.data(), inet_ntoa(sa.sin.sin_addr), dbuf.size() - 1));
#endif
#else
/*
* Not Windows; assume inet_ntop present. Non-Windows platforms
* declare inet_ntop with a const qualifier, so take a pointer to
* the underlying data.
*/
const auto addr =
#if DXX_USE_IPv6
(sa.sa.sa_family == AF_INET6)
? &sa.sin6.sin6_addr
:
#endif
static_cast(&sa.sin.sin_addr);
#endif
#if !defined(WIN32) || defined(DXX_HAVE_INET_NTOP)
if (const auto r = inet_ntop(sa.sa.sa_family, addr, dbuf.data(), dbuf.size()))
return r;
return "address";
#endif
}
}
static array UDP_Socket;
static void clear_UDP_Socket()
{
/* This would be simply `UDP_Socket = {}`, but the contained type
* has a deleted move-assignment operator= to compensate for a
* gcc-4.9 bug. See the comment in RAIIsocket for details.
*/
range_for (auto &i, UDP_Socket)
i.reset();
}
static bool operator==(const _sockaddr &l, const _sockaddr &r)
{
return !memcmp(&l, &r, sizeof(l));
}
static bool operator!=(const _sockaddr &l, const _sockaddr &r)
{
return !(l == r);
}
template
static void copy_from_ntstring(uint8_t *const buf, uint_fast32_t &len, const ntstring &in)
{
len += in.copy_out(0, reinterpret_cast(&buf[len]), N);
}
template
static void copy_to_ntstring(const uint8_t *const buf, uint_fast32_t &len, ntstring &out)
{
uint_fast32_t c = out.copy_if(reinterpret_cast(&buf[len]), N);
if (c < N)
++ c;
len += c;
}
static void net_udp_prepare_request_game_info(array &buf, int lite)
{
buf[0] = lite ? UPID_GAME_INFO_LITE_REQ : UPID_GAME_INFO_REQ;
memcpy(&buf[1], UDP_REQ_ID, 4);
PUT_INTEL_SHORT(&buf[5], DXX_VERSION_MAJORi);
PUT_INTEL_SHORT(&buf[7], DXX_VERSION_MINORi);
PUT_INTEL_SHORT(&buf[9], DXX_VERSION_MICROi);
PUT_INTEL_SHORT(&buf[11], MULTI_PROTO_VERSION);
}
static void reset_UDP_MyPort()
{
UDP_MyPort = CGameArg.MplUdpMyPort >= 1024 ? CGameArg.MplUdpMyPort : UDP_PORT_DEFAULT;
}
static bool convert_text_portstring(const array &portstring, uint16_t &outport, bool allow_privileged, bool silent)
{
char *porterror;
unsigned long myport = strtoul(&portstring[0], &porterror, 10);
if (*porterror || static_cast(myport) != myport || (!allow_privileged && myport < 1024))
{
if (!silent)
nm_messagebox(TXT_ERROR, 1, TXT_OK, "Illegal port \"%s\"", portstring.data());
return false;
}
else
outport = myport;
return true;
}
namespace {
#if DXX_USE_IPv6
/* Returns true if kernel allows specifying sizeof(sockaddr_in6) for
* size of a sockaddr_in. Saves a compare+jump in application code to
* pass sizeof(sockaddr_in6) and let kernel sort it out.
*/
static constexpr bool kernel_accepts_extra_sockaddr_bytes()
{
#if defined(__linux__)
/* Known to work */
return true;
#else
/* Default case: not known */
return false;
#endif
}
#endif
/* Forward to static function to eliminate this pointer */
template
class passthrough_static_apply : F
{
public:
#define apply_passthrough() this->F::apply(std::forward(args)...)
template
__attribute_always_inline()
auto operator()(Args &&... args) const
{
return apply_passthrough();
}
#undef apply_passthrough
};
template
class sockaddr_dispatch_t : F
{
public:
#define apply_sockaddr() this->F::operator()(reinterpret_cast(from), fromlen, std::forward(args)...)
template
auto operator()(sockaddr_in &from, socklen_t &fromlen, Args &&... args) const
{
fromlen = sizeof(from);
return apply_sockaddr();
}
#if DXX_USE_IPv6
template
auto operator()(sockaddr_in6 &from, socklen_t &fromlen, Args &&... args) const
{
fromlen = sizeof(from);
return apply_sockaddr();
}
#endif
template
__attribute_always_inline()
auto operator()(_sockaddr &from, socklen_t &fromlen, Args &&... args) const
{
return this->sockaddr_dispatch_t::operator()(dispatch_sockaddr_from, fromlen, std::forward(args)...);
}
#undef apply_sockaddr
};
template
class csockaddr_dispatch_t : F
{
public:
#define apply_sockaddr() this->F::operator()(to, tolen, std::forward(args)...)
template
auto operator()(const sockaddr &to, socklen_t tolen, Args &&... args) const
{
return apply_sockaddr();
}
#undef apply_sockaddr
#define apply_sockaddr(to) this->F::operator()(reinterpret_cast(to), sizeof(to), std::forward(args)...)
template
auto operator()(const sockaddr_in &to, Args &&... args) const
{
return apply_sockaddr(to);
}
#if DXX_USE_IPv6
template
auto operator()(const sockaddr_in6 &to, Args &&... args) const
{
return apply_sockaddr(to);
}
#endif
template
auto operator()(const _sockaddr &to, Args &&... args) const
{
#if DXX_USE_IPv6
if (kernel_accepts_extra_sockaddr_bytes() || to.sin6.sin6_family == AF_INET6)
return apply_sockaddr(to.sin6);
#endif
return apply_sockaddr(to.sin);
}
#undef apply_sockaddr
};
template
class socket_array_dispatch_t : F
{
public:
#define apply_array(B,L) this->F::operator()(to, tolen, sock, B, L, std::forward(args)...)
template
auto operator()(const sockaddr &to, socklen_t tolen, int sock, T *buf, uint_fast32_t buflen, Args &&... args) const
{
return apply_array(buf, buflen);
}
template
auto operator()(const sockaddr &to, socklen_t tolen, int sock, array &buf, Args &&... args) const
{
return apply_array(buf.data(), buf.size());
}
#undef apply_array
};
/* General UDP functions - START */
class dxx_sendto_t
{
public:
__attribute_always_inline()
ssize_t operator()(const sockaddr &to, socklen_t tolen, int sockfd, const void *msg, size_t len, int flags) const
{
/* Fix argument order */
return apply(sockfd, msg, len, flags, to, tolen);
}
static ssize_t apply(int sockfd, const void *msg, size_t len, int flags, const sockaddr &to, socklen_t tolen);
};
class dxx_recvfrom_t
{
public:
__attribute_always_inline()
ssize_t operator()(sockaddr &from, socklen_t &fromlen, int sockfd, void *msg, size_t len, int flags) const
{
/* Fix argument order */
return apply(sockfd, msg, len, flags, from, fromlen);
}
static ssize_t apply(int sockfd, void *msg, size_t len, int flags, sockaddr &from, socklen_t &fromlen);
};
ssize_t dxx_sendto_t::apply(int sockfd, const void *msg, size_t len, int flags, const sockaddr &to, socklen_t tolen)
{
ssize_t rv = sendto(sockfd, reinterpret_cast(msg), len, flags, &to, tolen);
UDP_num_sendto++;
if (rv > 0)
UDP_len_sendto += rv;
return rv;
}
ssize_t dxx_recvfrom_t::apply(int sockfd, void *buf, size_t len, int flags, sockaddr &from, socklen_t &fromlen)
{
ssize_t rv = recvfrom(sockfd, reinterpret_cast(buf), len, flags, &from, &fromlen);
UDP_num_recvfrom++;
UDP_len_recvfrom += rv;
return rv;
}
constexpr csockaddr_dispatch_t> dxx_sendto{};
constexpr sockaddr_dispatch_t dxx_recvfrom{};
}
static void udp_traffic_stat()
{
static fix64 last_traf_time = 0;
if (timer_query() >= last_traf_time + F1_0)
{
last_traf_time = timer_query();
con_printf(CON_DEBUG, "P#%u TRAFFIC - OUT: %fKB/s %iPPS IN: %fKB/s %iPPS",Player_num, static_cast(UDP_len_sendto)/1024, UDP_num_sendto, static_cast(UDP_len_recvfrom)/1024, UDP_num_recvfrom);
UDP_num_sendto = UDP_len_sendto = UDP_num_recvfrom = UDP_len_recvfrom = 0;
}
}
namespace {
class udp_dns_filladdr_t
{
public:
static int apply(sockaddr &addr, socklen_t addrlen, int ai_family, const char *host, uint16_t port, bool numeric_only, bool silent);
};
// Resolve address
int udp_dns_filladdr_t::apply(sockaddr &addr, socklen_t addrlen, int ai_family, const char *host, uint16_t port, bool numeric_only, bool silent)
{
#ifdef DXX_HAVE_GETADDRINFO
// Variables
addrinfo hints{};
char sPort[6];
// Build the port
snprintf(sPort, 6, "%hu", port);
// Uncomment the following if we want ONLY what we compile for
hints.ai_family = ai_family;
// We are always UDP
hints.ai_socktype = SOCK_DGRAM;
#ifdef AI_NUMERICSERV
hints.ai_flags |= AI_NUMERICSERV;
#endif
#if DXX_USE_IPv6
hints.ai_flags |= AI_V4MAPPED | AI_ALL;
#endif
// Numeric address only?
if (numeric_only)
hints.ai_flags |= AI_NUMERICHOST;
// Resolve the domain name
RAIIaddrinfo result;
if (result.getaddrinfo(host, sPort, &hints) != 0)
{
con_printf( CON_URGENT, "udp_dns_filladdr (getaddrinfo) failed for host %s", host );
if (!silent)
nm_messagebox( TXT_ERROR, 1, TXT_OK, "Could not resolve address\n%s", host );
addr.sa_family = AF_UNSPEC;
return -1;
}
if (result->ai_addrlen > addrlen)
{
con_printf(CON_URGENT, "Address too big for host %s", host);
if (!silent)
nm_messagebox(TXT_ERROR, 1, TXT_OK, "Address too big for host\n%s", host);
addr.sa_family = AF_UNSPEC;
return -1;
}
// Now copy it over
memcpy(&addr, result->ai_addr, addrlen = result->ai_addrlen);
/* WARNING: NERDY CONTENT
*
* The above works, since result->ai_addr contains the socket family,
* which is copied into our struct. Our struct will be read for sendto
* and recvfrom, using the sockaddr.sa_family member. If we are IPv6,
* this already has enough space to read into. If we are IPv4, we will
* not be able to get any IPv6 connections anyway, so we will be safe
* from an overflow. The more you know, 'cause knowledge is power!
*
* -- Matt
*/
// Free memory
#else
(void)numeric_only;
sockaddr_in &sai = reinterpret_cast(addr);
if (addrlen < sizeof(sai))
return -1;
const auto he = gethostbyname(host);
if (!he)
{
con_printf(CON_URGENT, "udp_dns_filladdr (gethostbyname) failed for host %s", host);
if (!silent)
nm_messagebox(TXT_ERROR, 1, TXT_OK, "Could not resolve IPv4 address\n%s", host);
addr.sa_family = AF_UNSPEC;
return -1;
}
sai = {};
sai.sin_family = ai_family;
sai.sin_port = htons(port);
sai.sin_addr = *reinterpret_cast(he->h_addr);
#endif
return 0;
}
template
class sockaddr_resolve_family_dispatch_t : sockaddr_dispatch_t
{
public:
#define apply_sockaddr(fromlen,family) this->sockaddr_dispatch_t::operator()(from, fromlen, family, std::forward(args)...)
template
auto operator()(sockaddr_in &from, Args &&... args) const
{
socklen_t fromlen;
return apply_sockaddr(fromlen, AF_INET);
}
#if DXX_USE_IPv6
template
auto operator()(sockaddr_in6 &from, Args &&... args) const
{
socklen_t fromlen;
return apply_sockaddr(fromlen, AF_INET6);
}
#endif
template
auto operator()(_sockaddr &from, Args &&... args) const
{
return this->operator()(dispatch_sockaddr_from, std::forward(args)...);
}
#undef apply_sockaddr
};
constexpr sockaddr_resolve_family_dispatch_t> udp_dns_filladdr{};
}
static void udp_init_broadcast_addresses()
{
udp_dns_filladdr(GBcast, UDP_BCAST_ADDR, UDP_PORT_DEFAULT, true, true);
#if DXX_USE_IPv6
udp_dns_filladdr(GMcast_v6, UDP_MCASTv6_ADDR, UDP_PORT_DEFAULT, true, true);
#endif
}
// Open socket
static int udp_open_socket(RAIIsocket &sock, int port)
{
int bcast = 1;
// close stale socket
struct _sockaddr sAddr; // my address information
sock.move(RAIIsocket(sAddr.address_family(), SOCK_DGRAM, 0));
if (!sock)
{
con_printf(CON_URGENT,"udp_open_socket: socket creation failed (port %i)", port);
nm_messagebox(TXT_ERROR,1,TXT_OK,"Port: %i\nCould not create socket.", port);
return -1;
}
sAddr = {};
sAddr.sa.sa_family = sAddr.address_family();
#if DXX_USE_IPv6
sAddr.sin6.sin6_port = htons (port); // short, network byte order
sAddr.sin6.sin6_addr = IN6ADDR_ANY_INIT; // automatically fill with my IP
#else
sAddr.sin.sin_port = htons (port); // short, network byte order
sAddr.sin.sin_addr.s_addr = INADDR_ANY; // automatically fill with my IP
#endif
if (bind(sock, &sAddr.sa, sizeof(sAddr)) < 0)
{
con_printf(CON_URGENT,"udp_open_socket: bind name to socket failed (port %i)", port);
nm_messagebox(TXT_ERROR,1,TXT_OK,"Port: %i\nCould not bind name to socket.", port);
sock.reset();
return -1;
}
#ifdef _WIN32
setsockopt(sock, SOL_SOCKET, SO_BROADCAST, reinterpret_cast(&bcast), sizeof(bcast));
#else
setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &bcast, sizeof(bcast));
#endif
return 0;
}
#ifndef MSG_DONTWAIT
static int udp_general_packet_ready(RAIIsocket &sock)
{
fd_set set;
struct timeval tv;
FD_ZERO(&set);
FD_SET(sock, &set);
tv.tv_sec = tv.tv_usec = 0;
if (select(sock + 1, &set, NULL, NULL, &tv) > 0)
return 1;
else
return 0;
}
#endif
// Gets some text. Returns 0 if nothing on there.
static int udp_receive_packet(RAIIsocket &sock, ubyte *text, int len, struct _sockaddr *sender_addr)
{
if (!sock)
return -1;
#ifndef MSG_DONTWAIT
if (!udp_general_packet_ready(sock))
return 0;
#endif
ssize_t msglen;
socklen_t clen;
int flags = 0;
#ifdef MSG_DONTWAIT
flags |= MSG_DONTWAIT;
#endif
msglen = dxx_recvfrom(*sender_addr, clen, sock, text, len, flags);
if (msglen < 0)
return 0;
if ((msglen >= 0) && (msglen < len))
text[msglen] = 0;
return msglen;
}
/* General UDP functions - END */
namespace {
class net_udp_request_game_info_t
{
public:
static void apply(const sockaddr &to, socklen_t tolen, int lite);
};
class net_udp_send_game_info_t
{
public:
static void apply(const sockaddr &target_addr, socklen_t targetlen, const _sockaddr *sender_addr, ubyte info_upid);
};
void net_udp_request_game_info_t::apply(const sockaddr &game_addr, socklen_t addrlen, int lite)
{
array buf;
net_udp_prepare_request_game_info(buf, lite);
dxx_sendto(game_addr, addrlen, UDP_Socket[0], buf, 0);
}
constexpr csockaddr_dispatch_t> net_udp_request_game_info{};
constexpr csockaddr_dispatch_t> net_udp_send_game_info{};
struct direct_join
{
struct _sockaddr host_addr;
int connecting;
fix64 start_time, last_time;
#if DXX_USE_TRACKER
uint16_t gameid;
#endif
};
struct manual_join : direct_join
{
array m;
array hostportbuf, myportbuf;
array addrbuf;
};
struct list_join : direct_join
{
enum {
entries = ((UDP_NETGAMES_PPAGE + 5) * 2) + 1,
};
array m;
array, entries> ljtext;
};
}
// Connect to a game host and get full info. Eventually we join!
static int net_udp_game_connect(direct_join *const dj)
{
// Get full game info so we can show it.
// Timeout after 10 seconds
if (timer_query() >= dj->start_time + (F1_0*10))
{
dj->connecting = 0;
array dbuf;
const auto port =
#if DXX_USE_IPv6
dj->host_addr.sa.sa_family == AF_INET6
? dj->host_addr.sin6.sin6_port
:
#endif
dj->host_addr.sin.sin_port;
nm_messagebox(TXT_ERROR, 1, TXT_OK,
"No response by host.\n\n\
Possible reasons:\n\
* No game on %s (anymore)\n\
* Host port %hu is not open\n\
* Game is hosted on a different port\n\
* Host uses a game version\n\
I do not understand", dxx_ntop(dj->host_addr, dbuf), ntohs(port));
return 0;
}
if (Netgame.protocol.udp.valid == -1)
{
nm_messagebox(TXT_ERROR,1,TXT_OK,"Version mismatch! Cannot join Game.\n\nHost game version: %i.%i.%i\nHost game protocol: %i\n(%s)\n\nYour game version: " DXX_VERSION_STR "\nYour game protocol: %i\n(%s)",Netgame.protocol.udp.program_iver[0],Netgame.protocol.udp.program_iver[1],Netgame.protocol.udp.program_iver[2],Netgame.protocol.udp.program_iver[3],(Netgame.protocol.udp.program_iver[3]==0?"RELEASE VERSION":"DEVELOPMENT BUILD, BETA, etc."), MULTI_PROTO_VERSION, (MULTI_PROTO_VERSION==0?"RELEASE VERSION":"DEVELOPMENT BUILD, BETA, etc."));
dj->connecting = 0;
return 0;
}
if (timer_query() >= dj->last_time + F1_0)
{
net_udp_request_game_info(dj->host_addr, 0);
#if DXX_USE_TRACKER
if (dj->gameid)
if (timer_query() >= dj->start_time + (F1_0*4))
udp_tracker_request_holepunch(dj->gameid);
#endif
dj->last_time = timer_query();
}
timer_delay2(5);
net_udp_listen();
if (Netgame.protocol.udp.valid != 1)
return 0; // still trying to connect
if (dj->connecting == 1)
{
if (!net_udp_show_game_info()) // show info menu and check if we join
{
dj->connecting = 0;
return 0;
}
else
{
// Get full game info again as it could have changed since we entered the info menu.
dj->connecting = 2;
Netgame.protocol.udp.valid = 0;
dj->start_time = timer_query();
return 0;
}
}
dj->connecting = 0;
return net_udp_do_join_game();
}
static int manual_join_game_handler(newmenu *const menu, const d_event &event, manual_join *const dj)
{
newmenu_item *items = newmenu_get_items(menu);
switch (event.type)
{
case EVENT_KEY_COMMAND:
if (dj->connecting && event_key_get(event) == KEY_ESC)
{
dj->connecting = 0;
nm_set_item_text(items[6], "");
return 1;
}
break;
case EVENT_IDLE:
if (dj->connecting)
{
if (net_udp_game_connect(dj))
return -2; // Success!
else if (!dj->connecting)
nm_set_item_text(items[6], "");
}
break;
case EVENT_NEWMENU_SELECTED:
{
int sockres = -1;
net_udp_init(); // yes, redundant call but since the menu does not know any better it would allow any IP entry as long as Netgame-entry looks okay... my head hurts...
if (!convert_text_portstring(dj->myportbuf, UDP_MyPort, false, false))
return 1;
sockres = udp_open_socket(UDP_Socket[0], UDP_MyPort);
if (sockres != 0)
{
return 1;
}
uint16_t hostport;
if (!convert_text_portstring(dj->hostportbuf, hostport, true, false))
return 1;
// Resolve address
if (udp_dns_filladdr(dj->host_addr, &dj->addrbuf[0], hostport, false, false) < 0)
{
return 1;
}
else
{
multi_new_game();
N_players = 0;
change_playernum_to(1);
dj->start_time = timer_query();
dj->last_time = 0;
Netgame.players[0].protocol.udp.addr = dj->host_addr;
dj->connecting = 1;
nm_set_item_text(items[6], "Connecting...");
return 1;
}
break;
}
case EVENT_WINDOW_CLOSE:
if (!Game_wind) // they cancelled
net_udp_close();
std::default_delete()(dj);
break;
default:
break;
}
return 0;
}
void net_udp_manual_join_game()
{
int nitems = 0;
auto dj = make_unique();
net_udp_init();
snprintf(&dj->addrbuf[0], dj->addrbuf.size(), "%s", CGameArg.MplUdpHostAddr.c_str());
snprintf(&dj->hostportbuf[0], dj->hostportbuf.size(), "%hu", CGameArg.MplUdpHostPort ? CGameArg.MplUdpHostPort : UDP_PORT_DEFAULT);
reset_UDP_MyPort();
nitems = 0;
auto &m = dj->m;
nm_set_item_text(m[nitems++],"GAME ADDRESS OR HOSTNAME:");
nm_set_item_input(m[nitems++],dj->addrbuf);
nm_set_item_text(m[nitems++],"GAME PORT:");
nm_set_item_input(m[nitems++], dj->hostportbuf);
nm_set_item_text(m[nitems++],"MY PORT:");
snprintf(&dj->myportbuf[0], dj->myportbuf.size(), "%hu", UDP_MyPort);
nm_set_item_input(m[nitems++], dj->myportbuf);
nm_set_item_text(m[nitems++],"");
newmenu_do1(nullptr, "ENTER GAME ADDRESS", nitems, &m[0], manual_join_game_handler, dj.release(), 0);
}
static int net_udp_list_join_poll(newmenu *menu, const d_event &event, list_join *const dj)
{
// Polling loop for Join Game menu
int newpage = 0;
static int NLPage = 0;
newmenu_item *menus = newmenu_get_items(menu);
switch (event.type)
{
case EVENT_WINDOW_ACTIVATED:
{
Netgame.protocol.udp.valid = 0;
Active_udp_games = {};
num_active_udp_changed = 1;
num_active_udp_games = 0;
net_udp_request_game_info(GBcast, 1);
#if DXX_USE_IPv6
net_udp_request_game_info(GMcast_v6, 1);
#endif
#if DXX_USE_TRACKER
udp_tracker_reqgames();
#endif
if (!dj->connecting) // fallback/failsafe!
nm_set_item_text(menus[UDP_NETGAMES_PPAGE+4], "\t");
break;
}
case EVENT_IDLE:
if (dj->connecting)
{
if (net_udp_game_connect(dj))
return -2; // Success!
if (!dj->connecting) // connect wasn't successful - get rid of the message.
nm_set_item_text(menus[UDP_NETGAMES_PPAGE+4], "\t");
}
break;
case EVENT_KEY_COMMAND:
{
int key = event_key_get(event);
if (key == KEY_PAGEUP)
{
NLPage--;
newpage++;
if (NLPage < 0)
NLPage = UDP_NETGAMES_PAGES-1;
key = 0;
break;
}
if (key == KEY_PAGEDOWN)
{
NLPage++;
newpage++;
if (NLPage >= UDP_NETGAMES_PAGES)
NLPage = 0;
key = 0;
break;
}
if( key == KEY_F4 )
{
// Empty the list
Active_udp_games = {};
num_active_udp_changed = 1;
num_active_udp_games = 0;
// Request LAN games
net_udp_request_game_info(GBcast, 1);
#if DXX_USE_IPv6
net_udp_request_game_info(GMcast_v6, 1);
#endif
#if DXX_USE_TRACKER
udp_tracker_reqgames();
#endif
// All done
break;
}
#if DXX_USE_TRACKER
if (key == KEY_F5)
{
Active_udp_games = {};
num_active_udp_changed = 1;
num_active_udp_games = 0;
net_udp_request_game_info(GBcast, 1);
#if DXX_USE_IPv6
net_udp_request_game_info(GMcast_v6, 1);
#endif
break;
}
if( key == KEY_F6 )
{
// Zero the list
Active_udp_games = {};
num_active_udp_changed = 1;
num_active_udp_games = 0;
// Request from the tracker
udp_tracker_reqgames();
// Break off
break;
}
#endif
if (key == KEY_ESC)
{
if (dj->connecting)
{
dj->connecting = 0;
nm_set_item_text(menus[UDP_NETGAMES_PPAGE+4], "\t");
return 1;
}
break;
}
break;
}
case EVENT_NEWMENU_SELECTED:
{
auto &citem = static_cast(event).citem;
if (((citem+(NLPage*UDP_NETGAMES_PPAGE)) >= 4) && (((citem+(NLPage*UDP_NETGAMES_PPAGE))-3) <= num_active_udp_games))
{
multi_new_game();
N_players = 0;
change_playernum_to(1);
dj->start_time = timer_query();
dj->last_time = 0;
dj->host_addr = Active_udp_games[(citem+(NLPage*UDP_NETGAMES_PPAGE))-4].game_addr;
Netgame.players[0].protocol.udp.addr = dj->host_addr;
dj->connecting = 1;
#if DXX_USE_TRACKER
dj->gameid = Active_udp_games[(citem+(NLPage*UDP_NETGAMES_PPAGE))-4].TrackerGameID;
#endif
nm_set_item_text(menus[UDP_NETGAMES_PPAGE+4], "\tConnecting. Please wait...");
return 1;
}
else
{
nm_messagebox(TXT_SORRY, 1, TXT_OK, TXT_INVALID_CHOICE);
return -1; // invalid game selected - stay in the menu
}
break;
}
case EVENT_WINDOW_CLOSE:
{
std::default_delete()(dj);
if (!Game_wind)
{
net_udp_close();
Network_status = NETSTAT_MENU; // they cancelled
}
return 0;
}
default:
break;
}
net_udp_listen();
if (!num_active_udp_changed && !newpage)
return 0;
num_active_udp_changed = 0;
// Copy the active games data into the menu options
for (int i = 0; i < UDP_NETGAMES_PPAGE; i++)
{
int game_status = Active_udp_games[(i+(NLPage*UDP_NETGAMES_PPAGE))].game_status;
int j,x, k,nplayers = 0;
char levelname[8],MissName[25],GameName[25],thold[2];
thold[1]=0;
if ((i+(NLPage*UDP_NETGAMES_PPAGE)) >= num_active_udp_games)
{
auto &p = dj->ljtext[i];
snprintf(&p[0], p.size(), "%d.", (i + (NLPage * UDP_NETGAMES_PPAGE)) + 1);
continue;
}
// These next two loops protect against menu skewing
// if missiontitle or gamename contain a tab
const auto &&fspacx = FSPACX();
for (x=0,k=0,j=0;j<15;j++)
{
if (Active_udp_games[(i+(NLPage*UDP_NETGAMES_PPAGE))].mission_title[j]=='\t')
continue;
thold[0]=Active_udp_games[(i+(NLPage*UDP_NETGAMES_PPAGE))].mission_title[j];
int tx;
gr_get_string_size(*grd_curcanv->cv_font, thold, &tx, nullptr, nullptr);
if ((x += tx) >= fspacx(55))
{
MissName[k]=MissName[k+1]=MissName[k+2]='.';
k+=3;
break;
}
MissName[k++]=Active_udp_games[(i+(NLPage*UDP_NETGAMES_PPAGE))].mission_title[j];
}
MissName[k]=0;
for (x=0,k=0,j=0;j<15;j++)
{
if (Active_udp_games[(i+(NLPage*UDP_NETGAMES_PPAGE))].game_name[j]=='\t')
continue;
thold[0]=Active_udp_games[(i+(NLPage*UDP_NETGAMES_PPAGE))].game_name[j];
int tx;
gr_get_string_size(*grd_curcanv->cv_font, thold, &tx, nullptr, nullptr);
if ((x += tx) >= fspacx(55))
{
GameName[k]=GameName[k+1]=GameName[k+2]='.';
k+=3;
break;
}
GameName[k++]=Active_udp_games[(i+(NLPage*UDP_NETGAMES_PPAGE))].game_name[j];
}
GameName[k]=0;
nplayers = Active_udp_games[(i+(NLPage*UDP_NETGAMES_PPAGE))].numconnected;
if (Active_udp_games[(i+(NLPage*UDP_NETGAMES_PPAGE))].levelnum < 0)
snprintf(levelname, sizeof(levelname), "S%d", -Active_udp_games[(i+(NLPage*UDP_NETGAMES_PPAGE))].levelnum);
else
snprintf(levelname, sizeof(levelname), "%d", Active_udp_games[(i+(NLPage*UDP_NETGAMES_PPAGE))].levelnum);
const char *status;
if (game_status == NETSTAT_STARTING)
status = "FORMING ";
else if (game_status == NETSTAT_PLAYING)
{
if (Active_udp_games[(i+(NLPage*UDP_NETGAMES_PPAGE))].RefusePlayers)
status = "RESTRICT";
else if (Active_udp_games[(i+(NLPage*UDP_NETGAMES_PPAGE))].game_flag.closed)
status = "CLOSED ";
else
status = "OPEN ";
}
else
status = "BETWEEN ";
unsigned gamemode = Active_udp_games[(i+(NLPage*UDP_NETGAMES_PPAGE))].gamemode;
auto &p = dj->ljtext[i];
snprintf(&p[0], p.size(), "%d.\t%s \t%s \t %d/%d \t%s \t %s \t%s", (i + (NLPage * UDP_NETGAMES_PPAGE)) + 1, GameName, (gamemode < sizeof(GMNamesShrt) / sizeof(GMNamesShrt[0])) ? GMNamesShrt[gamemode] : "INVALID", nplayers, Active_udp_games[(i + (NLPage * UDP_NETGAMES_PPAGE))].max_numplayers, MissName, levelname, status);
}
return 0;
}
void net_udp_list_join_game()
{
auto dj = make_unique();
net_udp_init();
const auto gamemyport = CGameArg.MplUdpMyPort;
if (udp_open_socket(UDP_Socket[0], gamemyport >= 1024 ? gamemyport : UDP_PORT_DEFAULT) < 0)
return;
if (gamemyport >= 1024 && gamemyport != UDP_PORT_DEFAULT)
if (udp_open_socket(UDP_Socket[1], UDP_PORT_DEFAULT) < 0)
nm_messagebox(TXT_WARNING, 1, TXT_OK, "Cannot open default port!\nYou can only scan for games\nmanually.");
// prepare broadcast address to discover games
udp_init_broadcast_addresses();
change_playernum_to(1);
N_players = 0;
Network_send_objects = 0;
Network_sending_extras=0;
Network_rejoined=0;
Network_status = NETSTAT_BROWSING; // We are looking at a game menu
net_udp_flush();
net_udp_listen(); // Throw out old info
num_active_udp_games = 0;
Active_udp_games = {};
gr_set_fontcolor(*grd_curcanv, BM_XRGB(15, 15, 23),-1);
auto &m = dj->m;
#if DXX_USE_TRACKER
nm_set_item_text(m[0], "\tF4/F5/F6: (Re)Scan for all/LAN/Tracker Games." );
#else
nm_set_item_text(m[0], "\tF4: (Re)Scan for LAN Games." );
#endif
nm_set_item_text(m[1], "\tPgUp/PgDn: Flip Pages." );
nm_set_item_text(m[2], " " );
nm_set_item_text(m[3], "\tGAME \tMODE \t#PLYRS \tMISSION \tLEV \tSTATUS");
for (int i = 0; i < UDP_NETGAMES_PPAGE; i++) {
auto &p = dj->ljtext[i];
nm_set_item_menu(m[i + 4], &p[0]);
snprintf(&p[0], p.size(), "%d.", i + 1);
}
nm_set_item_text(m[UDP_NETGAMES_PPAGE+4], "\t" );
num_active_udp_changed = 1;
newmenu_dotiny("NETGAMES", nullptr, UDP_NETGAMES_PPAGE + 5, &m[0], 1, net_udp_list_join_poll, dj.release());
}
static void net_udp_send_sequence_packet(UDP_sequence_packet seq, const _sockaddr &recv_addr)
{
array buf;
int len = 0;
buf[0] = seq.type; len++;
memcpy(&buf[len], seq.player.callsign.buffer(), CALLSIGN_LEN+1); len += CALLSIGN_LEN+1;
buf[len] = seq.player.connected; len++;
buf[len] = seq.player.rank; len++;
dxx_sendto(recv_addr, UDP_Socket[0], buf, 0);
}
static void net_udp_receive_sequence_packet(ubyte *data, UDP_sequence_packet *seq, const _sockaddr &sender_addr)
{
int len = 0;
seq->type = data[0]; len++;
memcpy(seq->player.callsign.buffer(), &(data[len]), CALLSIGN_LEN+1); len += CALLSIGN_LEN+1;
seq->player.connected = data[len]; len++;
memcpy (&(seq->player.rank),&(data[len]),1); len++;
if (multi_i_am_master())
seq->player.protocol.udp.addr = sender_addr;
}
void net_udp_init()
{
// So you want to play a netgame, eh? Let's a get a few things straight
#ifdef _WIN32
{
WORD wVersionRequested;
WSADATA wsaData;
wVersionRequested = MAKEWORD(2, 2);
WSACleanup();
if (WSAStartup( wVersionRequested, &wsaData))
nm_messagebox( TXT_ERROR, 1, TXT_OK, "Cannot init Winsock!"); // no break here... game will fail at socket creation anyways...
}
#endif
clear_UDP_Socket();
Netgame = {};
UDP_Seq = {};
UDP_MData = {};
net_udp_noloss_init_mdata_queue();
UDP_Seq.type = UPID_REQUEST;
UDP_Seq.player.callsign = get_local_player().callsign;
UDP_Seq.player.rank=GetMyNetRanking();
multi_new_game();
net_udp_flush();
#if DXX_USE_TRACKER
// Initialize the tracker info
udp_tracker_init();
#endif
}
void net_udp_close()
{
clear_UDP_Socket();
#ifdef _WIN32
WSACleanup();
#endif
}
// Same as above but used when player pressed ESC during kmatrix (host also does the packets for playing clients)
int net_udp_kmatrix_poll2( newmenu *,const d_event &event, const unused_newmenu_userdata_t *)
{
int rval = 0;
// Polling loop for End-of-level menu
if (event.type == EVENT_WINDOW_CREATED)
{
StartAbortMenuTime=timer_query();
return 0;
}
if (event.type != EVENT_WINDOW_DRAW)
return 0;
if (timer_query() > (StartAbortMenuTime+(F1_0*3)))
rval = -2;
net_udp_do_frame(0, 1);
return rval;
}
namespace dsx {
int net_udp_endlevel(int *secret)
{
// Do whatever needs to be done between levels
#if defined(DXX_BUILD_DESCENT_II)
if (EMULATING_D1)
#endif
{
// We do not really check if a player has actually found a secret level... yeah, I am too lazy! So just go there and pretend we did!
range_for (const auto i, unchecked_partial_range(Secret_level_table.get(), N_secret_levels))
{
if (Current_level_num == i)
{
*secret = 1;
break;
}
}
}
#if defined(DXX_BUILD_DESCENT_II)
else
*secret = 0;
#endif
Network_status = NETSTAT_ENDLEVEL; // We are between levels
net_udp_listen();
net_udp_send_endlevel_packet();
range_for (auto &i, partial_range(Netgame.players, N_players))
{
i.LastPacketTime = timer_query();
}
net_udp_send_endlevel_packet();
net_udp_send_endlevel_packet();
net_udp_update_netgame();
return(0);
}
}
int
static net_udp_can_join_netgame(netgame_info *game)
{
// Can this player rejoin a netgame in progress?
int num_players;
if (game->game_status == NETSTAT_STARTING)
return 1;
if (game->game_status != NETSTAT_PLAYING)
{
return 0;
}
// Game is in progress, figure out if this guy can re-join it
num_players = game->numplayers;
if (!(game->game_flag.closed)) {
// Look for player that is not connected
if (game->numconnected==game->max_numplayers)
return (2);
if (game->RefusePlayers)
return (3);
if (game->numplayers < game->max_numplayers)
return 1;
if (game->numconnectedplayers[i].callsign && i == game->protocol.udp.your_index)
return 1;
}
return 0;
}
// do UDP stuff to disconnect a player. Should ONLY be called from multi_disconnect_player()
void net_udp_disconnect_player(int playernum)
{
// A player has disconnected from the net game, take whatever steps are
// necessary
if (playernum == Player_num)
{
Int3(); // Weird, see Rob
return;
}
if (VerifyPlayerJoined==playernum)
VerifyPlayerJoined=-1;
net_udp_noloss_clear_mdata_trace(playernum);
}
namespace dsx {
static void net_udp_new_player(UDP_sequence_packet *const their)
{
unsigned pnum = their->player.connected;
Assert(pnum < Netgame.max_numplayers);
if (Newdemo_state == ND_STATE_RECORDING) {
int new_player;
if (pnum == N_players)
new_player = 1;
else
new_player = 0;
newdemo_record_multi_connect(pnum, new_player, their->player.callsign);
}
auto &plr = *vmplayerptr(pnum);
plr.callsign = their->player.callsign;
Netgame.players[pnum].callsign = their->player.callsign;
Netgame.players[pnum].protocol.udp.addr = their->player.protocol.udp.addr;
ClipRank (&their->player.rank);
Netgame.players[pnum].rank=their->player.rank;
plr.connected = CONNECT_PLAYING;
kill_matrix[pnum] = {};
const auto &&objp = vmobjptr(plr.objnum);
auto &player_info = objp->ctype.player_info;
player_info.net_killed_total = 0;
player_info.net_kills_total = 0;
player_info.mission.score = 0;
player_info.powerup_flags = {};
player_info.KillGoalCount = 0;
if (pnum == N_players)
{
N_players++;
Netgame.numplayers = N_players;
}
digi_play_sample(SOUND_HUD_MESSAGE, F1_0);
ClipRank (&their->player.rank);
const auto &&rankstr = GetRankStringWithSpace(their->player.rank);
HUD_init_message(HM_MULTI, "%s%s'%s' %s", rankstr.first, rankstr.second, static_cast(their->player.callsign), TXT_JOINING);
multi_make_ghost_player(pnum);
multi_send_score();
#if defined(DXX_BUILD_DESCENT_II)
multi_sort_kill_list();
#endif
net_udp_noloss_clear_mdata_trace(pnum);
}
}
static void net_udp_welcome_player(UDP_sequence_packet *their)
{
// Add a player to a game already in progress
WaitForRefuseAnswer=0;
// Don't accept new players if we're ending this level. Its safe to
// ignore since they'll request again later
if ((Network_status == NETSTAT_ENDLEVEL) || (Control_center_destroyed))
{
net_udp_dump_player(their->player.protocol.udp.addr, DUMP_ENDLEVEL);
return;
}
if (Network_send_objects || Network_sending_extras)
{
// Ignore silently, we're already responding to someone and we can't
// do more than one person at a time. If we don't dump them they will
// re-request in a few seconds.
return;
}
// Joining a running game will need quite a few packets on the mdata-queue, so let players only join if we have enough space.
if (Netgame.PacketLossPrevention)
if ((UDP_MDATA_STOR_QUEUE_SIZE - UDP_mdata_queue_highest) < UDP_MDATA_STOR_MIN_FREE_2JOIN)
return;
if (their->player.connected != Current_level_num)
{
net_udp_dump_player(their->player.protocol.udp.addr, DUMP_LEVEL);
return;
}
unsigned player_num = UINT_MAX;
UDP_sync_player = {};
Network_player_added = 0;
for (unsigned i = 0; i < N_players; i++)
{
if (vcplayerptr(i)->callsign == their->player.callsign &&
their->player.protocol.udp.addr == Netgame.players[i].protocol.udp.addr)
{
player_num = i;
break;
}
}
if (player_num == UINT_MAX)
{
// Player is new to this game
if ( !(Netgame.game_flag.closed) && (N_players < Netgame.max_numplayers))
{
// Add player in an open slot, game not full yet
player_num = N_players;
Network_player_added = 1;
}
else if (Netgame.game_flag.closed)
{
// Slots are open but game is closed
net_udp_dump_player(their->player.protocol.udp.addr, DUMP_CLOSED);
return;
}
else
{
// Slots are full but game is open, see if anyone is
// disconnected and replace the oldest player with this new one
int oldest_player = -1;
fix64 oldest_time = timer_query();
int activeplayers = 0;
Assert(N_players == Netgame.max_numplayers);
range_for (auto &i, partial_const_range(Netgame.players, Netgame.numplayers))
if (i.connected)
activeplayers++;
if (activeplayers == Netgame.max_numplayers)
{
// Game is full.
net_udp_dump_player(their->player.protocol.udp.addr, DUMP_FULL);
return;
}
for (unsigned i = 0; i < N_players; i++)
{
if (!vcplayerptr(i)->connected && Netgame.players[i].LastPacketTime < oldest_time)
{
oldest_time = Netgame.players[i].LastPacketTime;
oldest_player = i;
}
}
if (oldest_player == -1)
{
// Everyone is still connected
net_udp_dump_player(their->player.protocol.udp.addr, DUMP_FULL);
return;
}
else
{
// Found a slot!
player_num = oldest_player;
Network_player_added = 1;
}
}
}
else
{
// Player is reconnecting
auto &plr = *vcplayerptr(player_num);
if (plr.connected)
{
return;
}
if (Newdemo_state == ND_STATE_RECORDING)
newdemo_record_multi_reconnect(player_num);
Network_player_added = 0;
digi_play_sample(SOUND_HUD_MESSAGE, F1_0);
const auto &&rankstr = GetRankStringWithSpace(Netgame.players[player_num].rank);
HUD_init_message(HM_MULTI, "%s%s'%s' %s", rankstr.first, rankstr.second, static_cast(plr.callsign), TXT_REJOIN);
multi_send_score();
net_udp_noloss_clear_mdata_trace(player_num);
}
auto &obj = *vmobjptr(vcplayerptr(player_num)->objnum);
auto &player_info = obj.ctype.player_info;
player_info.KillGoalCount = 0;
// Send updated Objects data to the new/returning player
UDP_sync_player = *their;
UDP_sync_player.player.connected = player_num;
Network_send_objects = 1;
Network_send_objnum = -1;
Netgame.players[player_num].LastPacketTime = timer_query();
net_udp_send_objects();
}
int net_udp_objnum_is_past(objnum_t objnum)
{
// determine whether or not a given object number has already been sent
// to a re-joining player.
int player_num = UDP_sync_player.player.connected;
int obj_mode = !((object_owner[objnum] == -1) || (object_owner[objnum] == player_num));
if (!Network_send_objects)
return 0; // We're not sending objects to a new player
if (obj_mode > Network_send_object_mode)
return 0;
else if (obj_mode < Network_send_object_mode)
return 1;
else if (objnum < Network_send_objnum)
return 1;
else
return 0;
}
namespace dsx {
#if defined(DXX_BUILD_DESCENT_I)
static void net_udp_send_door_updates(void)
{
// Send door status when new player joins
range_for (const auto &&p, vcwallptridx)
{
auto &w = *p;
if ((w.type == WALL_DOOR && (w.state == WALL_DOOR_OPENING || w.state == WALL_DOOR_WAITING)) || (w.type == WALL_BLASTABLE && (w.flags & WALL_BLASTED)))
multi_send_door_open(w.segnum, w.sidenum,0);
else if (w.type == WALL_BLASTABLE && w.hps != WALL_HPS)
multi_send_hostage_door_status(p);
}
}
#elif defined(DXX_BUILD_DESCENT_II)
static void net_udp_send_door_updates(const playernum_t pnum)
{
// Send door status when new player joins
range_for (const auto &&p, vcwallptridx)
{
auto &w = *p;
if ((w.type == WALL_DOOR && (w.state == WALL_DOOR_OPENING || w.state == WALL_DOOR_WAITING || w.state == WALL_DOOR_OPEN)) || (w.type == WALL_BLASTABLE && (w.flags & WALL_BLASTED)))
multi_send_door_open_specific(pnum,w.segnum, w.sidenum,w.flags);
else if (w.type == WALL_BLASTABLE && w.hps != WALL_HPS)
multi_send_hostage_door_status(p);
else
multi_send_wall_status_specific(pnum,p,w.type,w.flags,w.state);
}
}
#endif
}
static void net_udp_process_monitor_vector(uint32_t vector)
{
if (!vector)
return;
range_for (const auto &&seg, vmsegptr)
{
int tm, ec, bm;
range_for (auto &j, seg->sides)
{
if ( ((tm = j.tmap_num2) != 0) &&
((ec = TmapInfo[tm&0x3fff].eclip_num) != -1) &&
((bm = Effects[ec].dest_bm_num) != -1) )
{
if (vector & 1)
{
j.tmap_num2 = bm | (tm&0xc000);
}
if (!(vector >>= 1))
return;
}
}
}
}
namespace {
class blown_bitmap_array
{
#if defined(DXX_BUILD_DESCENT_I)
#define NUM_BLOWN_BITMAPS 7
#elif defined(DXX_BUILD_DESCENT_II)
#define NUM_BLOWN_BITMAPS 20
#endif
typedef int T;
typedef array array_t;
typedef array_t::const_iterator const_iterator;
array_t a;
array_t::iterator e;
public:
blown_bitmap_array() :
e(a.begin())
{
}
bool exists(T t) const
{
const_iterator ce = e;
return std::find(a.begin(), ce, t) != ce;
}
void insert_unique(T t)
{
if (exists(t))
return;
if (e == a.end())
throw std::length_error("too many blown bitmaps");
*e = t;
++e;
}
};
}
static int net_udp_create_monitor_vector(void)
{
int monitor_num = 0;
int vector = 0;
blown_bitmap_array blown_bitmaps;
range_for (auto &i, partial_const_range(Effects, Num_effects))
{
if (i.dest_bm_num > 0) {
blown_bitmaps.insert_unique(i.dest_bm_num);
}
}
range_for (const auto &&seg, vcsegptr)
{
int tm, ec;
range_for (auto &j, seg->sides)
{
if ((tm = j.tmap_num2) != 0)
{
if ( ((ec = TmapInfo[tm&0x3fff].eclip_num) != -1) &&
(Effects[ec].dest_bm_num != -1) )
{
monitor_num++;
Assert(monitor_num < 32);
}
else
{
if (blown_bitmaps.exists(tm&0x3fff))
{
vector |= (1 << monitor_num);
monitor_num++;
Assert(monitor_num < 32);
}
}
}
}
}
return(vector);
}
static void net_udp_stop_resync(UDP_sequence_packet *their)
{
if (UDP_sync_player.player.protocol.udp.addr == their->player.protocol.udp.addr &&
(!d_stricmp(UDP_sync_player.player.callsign, their->player.callsign)) )
{
Network_send_objects = 0;
Network_sending_extras=0;
Network_rejoined=0;
Player_joining_extras=-1;
Network_send_objnum = -1;
}
}
namespace dsx {
void net_udp_send_objects(void)
{
sbyte owner, player_num = UDP_sync_player.player.connected;
static int obj_count = 0;
int loc = 0, remote_objnum = 0, obj_count_frame = 0;
static fix64 last_send_time = 0;
if (last_send_time + (F1_0/50) > timer_query())
return;
last_send_time = timer_query();
// Send clear objects array trigger and send player num
Assert(Network_send_objects != 0);
Assert(player_num >= 0);
Assert(player_num < Netgame.max_numplayers);
if ((Network_status == NETSTAT_ENDLEVEL) || Control_center_destroyed)
{
// Endlevel started before we finished sending the goods, we'll
// have to stop and try again after the level.
net_udp_dump_player(UDP_sync_player.player.protocol.udp.addr, DUMP_ENDLEVEL);
Network_send_objects = 0;
return;
}
array object_buffer;
object_buffer = {};
object_buffer[0] = UPID_OBJECT_DATA;
loc = 5;
if (Network_send_objnum == -1)
{
obj_count = 0;
Network_send_object_mode = 0;
PUT_INTEL_INT(&object_buffer[loc], -1); loc += 4;
object_buffer[loc] = player_num; loc += 1;
/* Placeholder for remote_objnum, not used here */ loc += 4;
Network_send_objnum = 0;
obj_count_frame = 1;
}
objnum_t i;
for (i = Network_send_objnum; i <= Highest_object_index; i++)
{
const auto &&objp = vmobjptr(i);
if ((objp->type != OBJ_POWERUP) && (objp->type != OBJ_PLAYER) &&
(objp->type != OBJ_CNTRLCEN) && (objp->type != OBJ_GHOST) &&
(objp->type != OBJ_ROBOT) && (objp->type != OBJ_HOSTAGE)
#if defined(DXX_BUILD_DESCENT_II)
&& !(objp->type == OBJ_WEAPON && get_weapon_id(objp) == weapon_id_type::PMINE_ID)
#endif
)
continue;
if ((Network_send_object_mode == 0) && ((object_owner[i] != -1) && (object_owner[i] != player_num)))
continue;
if ((Network_send_object_mode == 1) && ((object_owner[i] == -1) || (object_owner[i] == player_num)))
continue;
if ( loc + sizeof(object_rw) + 9 > UPID_MAX_SIZE-1 )
break; // Not enough room for another object
obj_count_frame++;
obj_count++;
remote_objnum = objnum_local_to_remote(i, &owner);
Assert(owner == object_owner[i]);
PUT_INTEL_INT(&object_buffer[loc], i); loc += 4;
object_buffer[loc] = owner; loc += 1;
PUT_INTEL_INT(&object_buffer[loc], remote_objnum); loc += 4;
// use object_rw to send objects for now. if object sometime contains some day contains something useful the client should know about, we should use it. but by now it's also easier to use object_rw because then we also do not need fix64 timer values.
multi_object_to_object_rw(vmobjptr(i), reinterpret_cast(&object_buffer[loc]));
if (words_bigendian)
object_rw_swap(reinterpret_cast(&object_buffer[loc]), 1);
loc += sizeof(object_rw);
}
if (obj_count_frame) // Send any objects we've buffered
{
Network_send_objnum = i;
PUT_INTEL_INT(&object_buffer[1], obj_count_frame);
Assert(loc <= UPID_MAX_SIZE);
dxx_sendto(UDP_sync_player.player.protocol.udp.addr, UDP_Socket[0], &object_buffer[0], loc, 0);
}
if (i > Highest_object_index)
{
if (Network_send_object_mode == 0)
{
Network_send_objnum = 0;
Network_send_object_mode = 1; // go to next mode
}
else
{
Assert(Network_send_object_mode == 1);
// Send count so other side can make sure he got them all
object_buffer[0] = UPID_OBJECT_DATA;
PUT_INTEL_INT(&object_buffer[1], 1);
PUT_INTEL_INT(&object_buffer[5], -2);
object_buffer[9] = player_num;
PUT_INTEL_INT(&object_buffer[10], obj_count);
dxx_sendto(UDP_sync_player.player.protocol.udp.addr, UDP_Socket[0], &object_buffer[0], 14, 0);
// Send sync packet which tells the player who he is and to start!
net_udp_send_rejoin_sync(player_num);
// Turn off send object mode
Network_send_objnum = -1;
Network_send_objects = 0;
obj_count = 0;
#if defined(DXX_BUILD_DESCENT_I)
Network_sending_extras=3; // start to send extras
#elif defined(DXX_BUILD_DESCENT_II)
Network_sending_extras=9; // start to send extras
#endif
VerifyPlayerJoined = Player_joining_extras = player_num;
return;
} // mode == 1;
} // i > Highest_object_index
}
}
static int net_udp_verify_objects(int remote, int local)
{
int nplayers = 0;
if ((remote-local) > 10)
return(2);
range_for (const auto &&objp, vcobjptr)
{
if (objp->type == OBJ_PLAYER || objp->type == OBJ_GHOST)
nplayers++;
}
if (Netgame.max_numplayers<=nplayers)
return(0);
return(1);
}
static void net_udp_read_object_packet( ubyte *data )
{
// Object from another net player we need to sync with
sbyte obj_owner;
static int mode = 0, object_count = 0, my_pnum = 0;
int remote_objnum = 0, nobj = 0, loc = 5;
nobj = GET_INTEL_INT(data + 1);
for (int i = 0; i < nobj; i++)
{
objnum_t objnum = GET_INTEL_INT(data + loc); loc += 4;
obj_owner = data[loc]; loc += 1;
remote_objnum = GET_INTEL_INT(data + loc); loc += 4;
if (objnum == object_none)
{
// Clear object array
init_objects();
Network_rejoined = 1;
my_pnum = obj_owner;
change_playernum_to(my_pnum);
mode = 1;
object_count = 0;
}
else if (objnum == object_guidebot_cannot_reach)
{
// Special debug checksum marker for entire send
if (mode == 1)
{
special_reset_objects();
mode = 0;
}
if (remote_objnum != object_count) {
Int3();
}
if (net_udp_verify_objects(remote_objnum, object_count))
{
// Failed to sync up
nm_messagebox(NULL, 1, TXT_OK, TXT_NET_SYNC_FAILED);
Network_status = NETSTAT_MENU;
return;
}
}
else
{
object_count++;
if ((obj_owner == my_pnum) || (obj_owner == -1))
{
if (mode != 1)
Int3(); // SEE ROB
objnum = remote_objnum;
}
else {
if (mode == 1)
{
special_reset_objects();
mode = 0;
}
objnum = obj_allocate();
}
if (objnum != object_none) {
auto obj = vmobjptridx(objnum);
if (obj->type != OBJ_NONE)
{
obj_unlink(obj);
Assert(obj->segnum == segment_none);
}
Assert(objnum < MAX_OBJECTS);
if (words_bigendian)
object_rw_swap(reinterpret_cast(&data[loc]), 1);
multi_object_rw_to_object(reinterpret_cast(&data[loc]), obj);
loc += sizeof(object_rw);
auto segnum = obj->segnum;
obj->attached_obj = object_none;
if (segnum != segment_none)
{
obj_link_unchecked(obj, vmsegptridx(segnum));
}
if (obj_owner == my_pnum)
map_objnum_local_to_local(objnum);
else if (obj_owner != -1)
map_objnum_local_to_remote(objnum, remote_objnum, obj_owner);
else
object_owner[objnum] = -1;
}
} // For a standard onbject
} // For each object in packet
}
namespace dsx {
void net_udp_send_rejoin_sync(const unsigned player_num)
{
vmplayerptr(player_num)->connected = CONNECT_PLAYING; // connect the new guy
Netgame.players[player_num].LastPacketTime = timer_query();
if ((Network_status == NETSTAT_ENDLEVEL) || Control_center_destroyed)
{
// Endlevel started before we finished sending the goods, we'll
// have to stop and try again after the level.
net_udp_dump_player(UDP_sync_player.player.protocol.udp.addr, DUMP_ENDLEVEL);
Network_send_objects = 0;
Network_sending_extras=0;
return;
}
if (Network_player_added)
{
UDP_sync_player.type = UPID_ADDPLAYER;
UDP_sync_player.player.connected = player_num;
net_udp_new_player(&UDP_sync_player);
for (unsigned i = 0; i < N_players; ++i)
{
if (i != player_num && i != Player_num && vcplayerptr(i)->connected)
net_udp_send_sequence_packet( UDP_sync_player, Netgame.players[i].protocol.udp.addr);
}
}
// Send sync packet to the new guy
net_udp_update_netgame();
// Fill in the kill list
Netgame.kills = kill_matrix;
for (unsigned j = 0; j < MAX_PLAYERS; ++j)
{
auto &objp = *vcobjptr(vcplayerptr(j)->objnum);
auto &player_info = objp.ctype.player_info;
Netgame.killed[j] = player_info.net_killed_total;
Netgame.player_kills[j] = player_info.net_kills_total;
Netgame.player_score[j] = player_info.mission.score;
}
Netgame.level_time = get_local_player().time_level;
Netgame.monitor_vector = net_udp_create_monitor_vector();
net_udp_send_game_info(UDP_sync_player.player.protocol.udp.addr, &UDP_sync_player.player.protocol.udp.addr, UPID_SYNC);
#if defined(DXX_BUILD_DESCENT_I)
net_udp_send_door_updates();
#endif
return;
}
}
static void net_udp_resend_sync_due_to_packet_loss()
{
if (!multi_i_am_master())
return;
net_udp_update_netgame();
// Fill in the kill list
Netgame.kills = kill_matrix;
for (unsigned j = 0; j < MAX_PLAYERS; ++j)
{
auto &objp = *vcobjptr(vcplayerptr(j)->objnum);
auto &player_info = objp.ctype.player_info;
Netgame.killed[j] = player_info.net_killed_total;
Netgame.player_kills[j] = player_info.net_kills_total;
Netgame.player_score[j] = player_info.mission.score;
}
Netgame.level_time = get_local_player().time_level;
Netgame.monitor_vector = net_udp_create_monitor_vector();
net_udp_send_game_info(UDP_sync_player.player.protocol.udp.addr, &UDP_sync_player.player.protocol.udp.addr, UPID_SYNC);
}
static void net_udp_add_player(UDP_sequence_packet *p)
{
range_for (auto &i, partial_range(Netgame.players, N_players))
{
if (i.protocol.udp.addr == p->player.protocol.udp.addr)
{
i.LastPacketTime = timer_query();
return; // already got them
}
}
if ( N_players >= MAX_PLAYERS )
{
return; // too many of em
}
ClipRank (&p->player.rank);
Netgame.players[N_players].callsign = p->player.callsign;
Netgame.players[N_players].protocol.udp.addr = p->player.protocol.udp.addr;
Netgame.players[N_players].rank=p->player.rank;
Netgame.players[N_players].connected = CONNECT_PLAYING;
auto &obj = *vmobjptr(vcplayerptr(N_players)->objnum);
auto &player_info = obj.ctype.player_info;
player_info.KillGoalCount = 0;
vmplayerptr(N_players)->connected = CONNECT_PLAYING;
Netgame.players[N_players].LastPacketTime = timer_query();
N_players++;
Netgame.numplayers = N_players;
net_udp_send_netgame_update();
}
// One of the players decided not to join the game
static void net_udp_remove_player(UDP_sequence_packet *p)
{
int pn;
pn = -1;
for (int i=0; iplayer.protocol.udp.addr)
{
pn = i;
break;
}
}
if (pn < 0 )
return;
for (int i=pn; i buf;
buf[0] = UPID_DUMP;
buf[1] = why;
dxx_sendto(dump_addr, UDP_Socket[0], buf, 0);
if (multi_i_am_master())
for (playernum_t i = 1; i < N_players; i++)
if (dump_addr == Netgame.players[i].protocol.udp.addr)
multi_disconnect_player(i);
}
namespace dsx {
void net_udp_update_netgame(void)
{
// Update the netgame struct with current game variables
Netgame.numconnected=0;
range_for (auto &i, partial_const_range(Players, N_players))
if (i.connected)
Netgame.numconnected++;
#if defined(DXX_BUILD_DESCENT_II)
// This is great: D2 1.0 and 1.1 ignore upper part of the game_flags field of
// the lite_info struct when you're sitting on the join netgame screen. We can
// "sneak" Hoard information into this field. This is better than sending
// another packet that could be lost in transit.
if (HoardEquipped())
{
if (game_mode_hoard())
{
Netgame.game_flag.hoard = 1;
Netgame.game_flag.team_hoard = !!(Game_mode & GM_TEAM);
}
else
{
Netgame.game_flag.hoard = 0;
Netgame.game_flag.team_hoard = 0;
}
}
#endif
if (Network_status == NETSTAT_STARTING)
return;
Netgame.numplayers = N_players;
Netgame.game_status = Network_status;
Netgame.kills = kill_matrix;
for (unsigned i = 0; i < MAX_PLAYERS; ++i)
{
auto &plr = *vcplayerptr(i);
Netgame.players[i].connected = plr.connected;
auto &objp = *vcobjptr(plr.objnum);
auto &player_info = objp.ctype.player_info;
Netgame.killed[i] = player_info.net_killed_total;
Netgame.player_kills[i] = player_info.net_kills_total;
#if defined(DXX_BUILD_DESCENT_II)
Netgame.player_score[i] = player_info.mission.score;
#endif
Netgame.net_player_flags[i] = player_info.powerup_flags;
}
Netgame.team_kills = team_kills;
Netgame.levelnum = Current_level_num;
}
}
/* Send an updated endlevel status to everyone (if we are host) or host (if we are client) */
void net_udp_send_endlevel_packet(void)
{
int len = 0;
if (multi_i_am_master())
{
array buf;
buf[len] = UPID_ENDLEVEL_H; len++;
buf[len] = Countdown_seconds_left; len++;
range_for (auto &i, Players)
{
buf[len] = i.connected; len++;
auto &objp = *vcobjptr(i.objnum);
auto &player_info = objp.ctype.player_info;
PUT_INTEL_SHORT(&buf[len], player_info.net_kills_total);
len += 2;
PUT_INTEL_SHORT(&buf[len], player_info.net_killed_total);
len += 2;
}
range_for (auto &i, kill_matrix)
{
range_for (auto &j, i)
{
PUT_INTEL_SHORT(&buf[len], j); len += 2;
}
}
for (unsigned i = 1; i < MAX_PLAYERS; ++i)
if (vcplayerptr(i)->connected != CONNECT_DISCONNECTED)
dxx_sendto(Netgame.players[i].protocol.udp.addr, UDP_Socket[0], buf, 0);
}
else
{
array buf;
buf[len] = UPID_ENDLEVEL_C; len++;
buf[len] = Player_num; len++;
buf[len] = get_local_player().connected; len++;
buf[len] = Countdown_seconds_left; len++;
auto &player_info = get_local_plrobj().ctype.player_info;
PUT_INTEL_SHORT(&buf[len], player_info.net_kills_total);
len += 2;
PUT_INTEL_SHORT(&buf[len], player_info.net_killed_total);
len += 2;
range_for (auto &i, kill_matrix[Player_num])
{
PUT_INTEL_SHORT(&buf[len], i);
len += 2;
}
dxx_sendto(Netgame.players[0].protocol.udp.addr, UDP_Socket[0], buf, 0);
}
}
static void net_udp_send_version_deny(const _sockaddr &sender_addr)
{
array buf;
buf[0] = UPID_VERSION_DENY;
PUT_INTEL_SHORT(&buf[1], DXX_VERSION_MAJORi);
PUT_INTEL_SHORT(&buf[3], DXX_VERSION_MINORi);
PUT_INTEL_SHORT(&buf[5], DXX_VERSION_MICROi);
PUT_INTEL_SHORT(&buf[7], MULTI_PROTO_VERSION);
dxx_sendto(sender_addr, UDP_Socket[0], buf, 0);
}
static void net_udp_process_version_deny(ubyte *data, const _sockaddr &)
{
Netgame.protocol.udp.program_iver[0] = GET_INTEL_SHORT(&data[1]);
Netgame.protocol.udp.program_iver[1] = GET_INTEL_SHORT(&data[3]);
Netgame.protocol.udp.program_iver[2] = GET_INTEL_SHORT(&data[5]);
Netgame.protocol.udp.program_iver[3] = GET_INTEL_SHORT(&data[7]);
Netgame.protocol.udp.valid = -1;
}
// Check request for game info. Return 1 if sucessful; -1 if version mismatch; 0 if wrong game or some other error - do not process
static int net_udp_check_game_info_request(ubyte *data, int lite)
{
short sender_iver[4] = { 0, 0, 0, 0 };
char sender_id[4] = "";
memcpy(&sender_id, &(data[1]), 4);
sender_iver[0] = GET_INTEL_SHORT(&(data[5]));
sender_iver[1] = GET_INTEL_SHORT(&(data[7]));
sender_iver[2] = GET_INTEL_SHORT(&(data[9]));
if (!lite)
sender_iver[3] = GET_INTEL_SHORT(&(data[11]));
if (memcmp(&sender_id, UDP_REQ_ID, 4))
return 0;
if ((sender_iver[0] != DXX_VERSION_MAJORi) || (sender_iver[1] != DXX_VERSION_MINORi) || (sender_iver[2] != DXX_VERSION_MICROi) || (!lite && sender_iver[3] != MULTI_PROTO_VERSION))
return -1;
return 1;
}
namespace {
struct game_info_light
{
array buf;
};
struct game_info_heavy
{
array buf;
};
static uint_fast32_t net_udp_prepare_light_game_info(game_info_light &info)
{
uint_fast32_t len = 0;
uint8_t *const buf = info.buf.data();
buf[0] = UPID_GAME_INFO_LITE; len++; // 1
PUT_INTEL_SHORT(buf + len, DXX_VERSION_MAJORi); len += 2; // 3
PUT_INTEL_SHORT(buf + len, DXX_VERSION_MINORi); len += 2; // 5
PUT_INTEL_SHORT(buf + len, DXX_VERSION_MICROi); len += 2; // 7
PUT_INTEL_INT(buf + len, Netgame.protocol.udp.GameID); len += 4; // 11
PUT_INTEL_INT(buf + len, Netgame.levelnum); len += 4;
buf[len] = Netgame.gamemode; len++;
buf[len] = Netgame.RefusePlayers; len++;
buf[len] = Netgame.difficulty; len++;
int tmpvar;
tmpvar = Netgame.game_status;
if ((Network_status == NETSTAT_ENDLEVEL) || Control_center_destroyed)
tmpvar = NETSTAT_ENDLEVEL;
if (Netgame.PlayTimeAllowed)
{
if ( (f2i((i2f (Netgame.PlayTimeAllowed*5*60))-ThisLevelTime)) < 30 )
{
tmpvar = NETSTAT_ENDLEVEL;
}
}
buf[len] = tmpvar; len++;
buf[len] = Netgame.numconnected; len++;
buf[len] = Netgame.max_numplayers; len++;
buf[len] = pack_game_flags(&Netgame.game_flag).value; len++;
copy_from_ntstring(buf, len, Netgame.game_name);
copy_from_ntstring(buf, len, Netgame.mission_title);
copy_from_ntstring(buf, len, Netgame.mission_name);
return len;
}
static uint_fast32_t net_udp_prepare_heavy_game_info(const _sockaddr *addr, ubyte info_upid, game_info_heavy &info)
{
uint8_t *const buf = info.buf.data();
uint_fast32_t len = 0;
buf[0] = info_upid; len++;
PUT_INTEL_SHORT(buf + len, DXX_VERSION_MAJORi); len += 2;
PUT_INTEL_SHORT(buf + len, DXX_VERSION_MINORi); len += 2;
PUT_INTEL_SHORT(buf + len, DXX_VERSION_MICROi); len += 2;
ubyte &your_index = buf[len++];
your_index = MULTI_PNUM_UNDEF;
for (int i = 0; i < Netgame.players.size(); i++)
{
memcpy(&buf[len], Netgame.players[i].callsign.buffer(), CALLSIGN_LEN+1); len += CALLSIGN_LEN+1;
buf[len] = Netgame.players[i].connected; len++;
buf[len] = Netgame.players[i].rank; len++;
if (addr && *addr == Netgame.players[i].protocol.udp.addr)
your_index = i;
}
PUT_INTEL_INT(buf + len, Netgame.levelnum); len += 4;
buf[len] = Netgame.gamemode; len++;
buf[len] = Netgame.RefusePlayers; len++;
buf[len] = Netgame.difficulty; len++;
int tmpvar;
tmpvar = Netgame.game_status;
if ((Network_status == NETSTAT_ENDLEVEL) || Control_center_destroyed)
tmpvar = NETSTAT_ENDLEVEL;
if (Netgame.PlayTimeAllowed)
{
if ( (f2i((i2f (Netgame.PlayTimeAllowed*5*60))-ThisLevelTime)) < 30 )
{
tmpvar = NETSTAT_ENDLEVEL;
}
}
buf[len] = tmpvar; len++;
buf[len] = Netgame.numplayers; len++;
buf[len] = Netgame.max_numplayers; len++;
buf[len] = Netgame.numconnected; len++;
buf[len] = pack_game_flags(&Netgame.game_flag).value; len++;
buf[len] = Netgame.team_vector; len++;
PUT_INTEL_INT(buf + len, Netgame.AllowedItems); len += 4;
buf[len] = Netgame.SecludedSpawns; len += 1;
#if defined(DXX_BUILD_DESCENT_I)
buf[len] = Netgame.SpawnGrantedItems.mask; len += 1;
buf[len] = Netgame.DuplicatePowerups.get_packed_field(); len += 1;
#elif defined(DXX_BUILD_DESCENT_II)
PUT_INTEL_SHORT(buf + len, Netgame.SpawnGrantedItems.mask); len += 2;
PUT_INTEL_SHORT(buf + len, Netgame.DuplicatePowerups.get_packed_field()); len += 2;
buf[len++] = Netgame.Allow_marker_view;
buf[len++] = Netgame.AlwaysLighting;
buf[len++] = Netgame.ThiefModifierFlags;
#endif
buf[len++] = Netgame.ShowEnemyNames;
buf[len++] = Netgame.BrightPlayers;
buf[len++] = Netgame.InvulAppear;
range_for (const auto &i, Netgame.team_name)
{
memcpy(&buf[len], static_cast(i), (CALLSIGN_LEN+1));
len += CALLSIGN_LEN + 1;
}
range_for (auto &i, Netgame.locations)
{
PUT_INTEL_INT(buf + len, i); len += 4;
}
range_for (auto &i, Netgame.kills)
{
range_for (auto &j, i)
{
PUT_INTEL_SHORT(buf + len, j); len += 2;
}
}
PUT_INTEL_SHORT(buf + len, Netgame.segments_checksum); len += 2;
PUT_INTEL_SHORT(buf + len, Netgame.team_kills[0]); len += 2;
PUT_INTEL_SHORT(buf + len, Netgame.team_kills[1]); len += 2;
range_for (auto &i, Netgame.killed)
{
PUT_INTEL_SHORT(buf + len, i); len += 2;
}
range_for (auto &i, Netgame.player_kills)
{
PUT_INTEL_SHORT(buf + len, i); len += 2;
}
PUT_INTEL_INT(buf + len, Netgame.KillGoal); len += 4;
PUT_INTEL_INT(buf + len, Netgame.PlayTimeAllowed); len += 4;
PUT_INTEL_INT(buf + len, Netgame.level_time); len += 4;
PUT_INTEL_INT(buf + len, Netgame.control_invul_time); len += 4;
PUT_INTEL_INT(buf + len, Netgame.monitor_vector); len += 4;
range_for (auto &i, Netgame.player_score)
{
PUT_INTEL_INT(buf + len, i); len += 4;
}
range_for (auto &i, Netgame.net_player_flags)
{
buf[len] = static_cast(i.get_player_flags());
len++;
}
PUT_INTEL_SHORT(buf + len, Netgame.PacketsPerSec); len += 2;
buf[len] = Netgame.PacketLossPrevention; len++;
buf[len] = Netgame.NoFriendlyFire; len++;
buf[len] = Netgame.MouselookFlags; len++;
copy_from_ntstring(buf, len, Netgame.game_name);
copy_from_ntstring(buf, len, Netgame.mission_title);
copy_from_ntstring(buf, len, Netgame.mission_name);
return len;
}
void net_udp_send_game_info_t::apply(const sockaddr &sender_addr, socklen_t senderlen, const _sockaddr *player_address, ubyte info_upid)
{
// Send game info to someone who requested it
net_udp_update_netgame(); // Update the values in the netgame struct
union {
game_info_light light;
game_info_heavy heavy;
};
std::size_t len;
const uint8_t *info;
if (info_upid == UPID_GAME_INFO_LITE)
{
len = net_udp_prepare_light_game_info(light);
info = light.buf.data();
}
else
{
len = net_udp_prepare_heavy_game_info(player_address, info_upid, heavy);
info = heavy.buf.data();
}
dxx_sendto(sender_addr, senderlen, UDP_Socket[0], info, len, 0);
}
}
static unsigned MouselookMPFlag(const unsigned game_mode)
{
return (game_mode & GM_MULTI_COOP) ? MouselookMode::MPCoop : MouselookMode::MPAnarchy;
}
static void net_udp_broadcast_game_info(ubyte info_upid)
{
net_udp_send_game_info(GBcast, nullptr, info_upid);
#if DXX_USE_IPv6
net_udp_send_game_info(GMcast_v6, nullptr, info_upid);
#endif
}
/* Send game info to all players in this game. Also send lite_info for people watching the netlist */
void net_udp_send_netgame_update()
{
for (unsigned i = 1; i < N_players; ++i)
{
if (vcplayerptr(i)->connected == CONNECT_DISCONNECTED)
continue;
const auto &addr = Netgame.players[i].protocol.udp.addr;
net_udp_send_game_info(addr, &addr, UPID_GAME_INFO);
}
net_udp_broadcast_game_info(UPID_GAME_INFO_LITE);
}
static unsigned net_udp_send_request(void)
{
// Send a request to join a game 'Netgame'. Returns 0 if we can join this
// game, non-zero if there is some problem.
auto b = Netgame.players.begin();
auto e = Netgame.players.end();
auto i = std::find_if(b, e, [](const netplayer_info &ni) { return ni.connected != 0; });
if (i == e)
{
Assert(false);
return std::distance(b, i);
}
UDP_Seq.type = UPID_REQUEST;
UDP_Seq.player.connected = Current_level_num;
net_udp_send_sequence_packet(UDP_Seq, Netgame.players[0].protocol.udp.addr);
return std::distance(b, i);
}
namespace dsx {
static void net_udp_process_game_info(const uint8_t *data, uint_fast32_t, const _sockaddr &game_addr, int lite_info, uint16_t TrackerGameID)
{
uint_fast32_t len = 0;
if (lite_info)
{
UDP_netgame_info_lite recv_game;
recv_game.game_addr = game_addr;
len++; // skip UPID byte
recv_game.program_iver[0] = GET_INTEL_SHORT(&(data[len])); len += 2;
recv_game.program_iver[1] = GET_INTEL_SHORT(&(data[len])); len += 2;
recv_game.program_iver[2] = GET_INTEL_SHORT(&(data[len])); len += 2;
if ((recv_game.program_iver[0] != DXX_VERSION_MAJORi) || (recv_game.program_iver[1] != DXX_VERSION_MINORi) || (recv_game.program_iver[2] != DXX_VERSION_MICROi))
return;
recv_game.GameID = GET_INTEL_INT(&(data[len])); len += 4;
recv_game.levelnum = GET_INTEL_INT(&(data[len])); len += 4;
recv_game.gamemode = data[len]; len++;
recv_game.RefusePlayers = data[len]; len++;
recv_game.difficulty = data[len]; len++;
recv_game.game_status = data[len]; len++;
recv_game.numconnected = data[len]; len++;
recv_game.max_numplayers = data[len]; len++;
packed_game_flags p;
p.value = data[len];
recv_game.game_flag = unpack_game_flags(&p); len++;
copy_to_ntstring(data, len, recv_game.game_name);
copy_to_ntstring(data, len, recv_game.mission_title);
copy_to_ntstring(data, len, recv_game.mission_name);
recv_game.TrackerGameID = TrackerGameID;
num_active_udp_changed = 1;
auto r = partial_range(Active_udp_games, num_active_udp_games);
auto i = std::find_if(r.begin(), r.end(), [&recv_game](const UDP_netgame_info_lite &g) { return !d_stricmp(g.game_name.data(), recv_game.game_name.data()) && g.GameID == recv_game.GameID; });
if (i == Active_udp_games.end())
{
return;
}
*i = std::move(recv_game);
#if defined(DXX_BUILD_DESCENT_II)
// See if this is really a Hoard game
// If so, adjust all the data accordingly
if (HoardEquipped())
{
if (i->game_flag.hoard)
{
i->gamemode=NETGAME_HOARD;
i->game_status=NETSTAT_PLAYING;
if (i->game_flag.team_hoard)
i->gamemode=NETGAME_TEAM_HOARD;
if (i->game_flag.endlevel)
i->game_status=NETSTAT_ENDLEVEL;
if (i->game_flag.forming)
i->game_status=NETSTAT_STARTING;
}
}
#endif
if (i == r.end())
{
if (i->numconnected)
num_active_udp_games++;
}
else if (!i->numconnected)
{
// Delete this game
std::move(std::next(i), r.end(), i);
num_active_udp_games--;
}
}
else
{
Netgame.players[0].protocol.udp.addr = game_addr;
len++; // skip UPID byte
Netgame.protocol.udp.program_iver[0] = GET_INTEL_SHORT(&(data[len])); len += 2;
Netgame.protocol.udp.program_iver[1] = GET_INTEL_SHORT(&(data[len])); len += 2;
Netgame.protocol.udp.program_iver[2] = GET_INTEL_SHORT(&(data[len])); len += 2;
Netgame.protocol.udp.your_index = data[len]; ++len;
range_for (auto &i, Netgame.players)
{
i.callsign.copy_lower(reinterpret_cast(&data[len]), CALLSIGN_LEN);
len += CALLSIGN_LEN+1;
i.connected = data[len]; len++;
i.rank = data[len]; len++;
}
Netgame.levelnum = GET_INTEL_INT(&(data[len])); len += 4;
Netgame.gamemode = data[len]; len++;
Netgame.RefusePlayers = data[len]; len++;
Netgame.difficulty = data[len]; len++;
Netgame.game_status = data[len]; len++;
Netgame.numplayers = data[len]; len++;
Netgame.max_numplayers = data[len]; len++;
Netgame.numconnected = data[len]; len++;
packed_game_flags p;
p.value = data[len];
Netgame.game_flag = unpack_game_flags(&p); len++;
Netgame.team_vector = data[len]; len++;
Netgame.AllowedItems = GET_INTEL_INT(&(data[len])); len += 4;
Netgame.SecludedSpawns = data[len]; len += 1;
#if defined(DXX_BUILD_DESCENT_I)
Netgame.SpawnGrantedItems = data[len]; len += 1;
Netgame.DuplicatePowerups.set_packed_field(data[len]); len += 1;
#elif defined(DXX_BUILD_DESCENT_II)
Netgame.SpawnGrantedItems = GET_INTEL_SHORT(&(data[len])); len += 2;
Netgame.DuplicatePowerups.set_packed_field(GET_INTEL_SHORT(&data[len])); len += 2;
if (unlikely(map_granted_flags_to_laser_level(Netgame.SpawnGrantedItems) > MAX_SUPER_LASER_LEVEL))
/* Bogus input - reject whole entry */
Netgame.SpawnGrantedItems = 0;
Netgame.Allow_marker_view = data[len++];
Netgame.AlwaysLighting = data[len++];
Netgame.ThiefModifierFlags = data[len++];
#endif
Netgame.ShowEnemyNames = data[len]; len += 1;
Netgame.BrightPlayers = data[len]; len += 1;
Netgame.InvulAppear = data[len]; len += 1;
range_for (auto &i, Netgame.team_name)
{
i.copy(reinterpret_cast(&data[len]), (CALLSIGN_LEN+1));
len += CALLSIGN_LEN + 1;
}
range_for (auto &i, Netgame.locations)
{
i = GET_INTEL_INT(&(data[len])); len += 4;
}
range_for (auto &i, Netgame.kills)
{
range_for (auto &j, i)
{
j = GET_INTEL_SHORT(&(data[len])); len += 2;
}
}
Netgame.segments_checksum = GET_INTEL_SHORT(&(data[len])); len += 2;
Netgame.team_kills[0] = GET_INTEL_SHORT(&(data[len])); len += 2;
Netgame.team_kills[1] = GET_INTEL_SHORT(&(data[len])); len += 2;
range_for (auto &i, Netgame.killed)
{
i = GET_INTEL_SHORT(&(data[len])); len += 2;
}
range_for (auto &i, Netgame.player_kills)
{
i = GET_INTEL_SHORT(&(data[len])); len += 2;
}
Netgame.KillGoal = GET_INTEL_INT(&(data[len])); len += 4;
Netgame.PlayTimeAllowed = GET_INTEL_INT(&(data[len])); len += 4;
Netgame.level_time = GET_INTEL_INT(&(data[len])); len += 4;
Netgame.control_invul_time = GET_INTEL_INT(&(data[len])); len += 4;
Netgame.monitor_vector = GET_INTEL_INT(&(data[len])); len += 4;
range_for (auto &i, Netgame.player_score)
{
i = GET_INTEL_INT(&(data[len])); len += 4;
}
range_for (auto &i, Netgame.net_player_flags)
{
i = player_flags(data[len]);
len++;
}
Netgame.PacketsPerSec = GET_INTEL_SHORT(&(data[len])); len += 2;
Netgame.PacketLossPrevention = data[len]; len++;
Netgame.NoFriendlyFire = data[len]; len++;
Netgame.MouselookFlags = data[len]; len++;
copy_to_ntstring(data, len, Netgame.game_name);
copy_to_ntstring(data, len, Netgame.mission_title);
copy_to_ntstring(data, len, Netgame.mission_name);
Netgame.protocol.udp.valid = 1; // This game is valid! YAY!
}
}
}
static void net_udp_process_dump(ubyte *data, int, const _sockaddr &sender_addr)
{
// Our request for join was denied. Tell the user why.
if (sender_addr != Netgame.players[0].protocol.udp.addr)
return;
switch (data[1])
{
case DUMP_PKTTIMEOUT:
case DUMP_KICKED:
if (Game_wind)
window_set_visible(Game_wind, 0);
if (data[1] == DUMP_PKTTIMEOUT)
nm_messagebox(NULL, 1, TXT_OK, "You were removed from the game.\nYou failed receiving important\npackets. Sorry.");
if (data[1] == DUMP_KICKED)
nm_messagebox(NULL, 1, TXT_OK, "You were kicked by Host!");
if (Game_wind)
window_set_visible(Game_wind, 1);
multi_quit_game = 1;
game_leave_menus();
break;
default:
if (data[1] > DUMP_LEVEL) // invalid dump... heh
break;
Network_status = NETSTAT_MENU; // stop us from sending before message
nm_messagebox_str(NULL, TXT_OK, NET_DUMP_STRINGS(data[1]));
Network_status = NETSTAT_MENU;
multi_reset_stuff();
break;
}
}
static void net_udp_process_request(UDP_sequence_packet *their)
{
// Player is ready to receieve a sync packet
for (unsigned i = 0; i < N_players; ++i)
if (their->player.protocol.udp.addr == Netgame.players[i].protocol.udp.addr && !d_stricmp(their->player.callsign, Netgame.players[i].callsign))
{
vmplayerptr(i)->connected = CONNECT_PLAYING;
Netgame.players[i].LastPacketTime = timer_query();
break;
}
}
static void net_udp_process_packet(ubyte *data, const _sockaddr &sender_addr, int length )
{
UDP_sequence_packet their{};
switch (data[0])
{
case UPID_VERSION_DENY:
if (multi_i_am_master() || length != UPID_VERSION_DENY_SIZE)
break;
net_udp_process_version_deny(data, sender_addr);
break;
case UPID_GAME_INFO_REQ:
{
int result = 0;
static fix64 last_full_req_time = 0;
if (!multi_i_am_master() || length != UPID_GAME_INFO_REQ_SIZE)
break;
if (timer_query() < last_full_req_time+(F1_0/2)) // answer 2 times per second max
break;
last_full_req_time = timer_query();
result = net_udp_check_game_info_request(data, 0);
if (result == -1)
net_udp_send_version_deny(sender_addr);
else if (result == 1)
net_udp_send_game_info(sender_addr, &sender_addr, UPID_GAME_INFO);
break;
}
case UPID_GAME_INFO:
if (multi_i_am_master() || length > UPID_GAME_INFO_SIZE_MAX)
break;
net_udp_process_game_info(data, length, sender_addr, 0);
break;
case UPID_GAME_INFO_LITE_REQ:
{
static fix64 last_lite_req_time = 0;
if (!multi_i_am_master() || length != UPID_GAME_INFO_LITE_REQ_SIZE)
break;
if (timer_query() < last_lite_req_time+(F1_0/8))// answer 8 times per second max
break;
last_lite_req_time = timer_query();
if (net_udp_check_game_info_request(data, 1) == 1)
net_udp_send_game_info(sender_addr, &sender_addr, UPID_GAME_INFO_LITE);
break;
}
case UPID_GAME_INFO_LITE:
if (multi_i_am_master() || length > UPID_GAME_INFO_LITE_SIZE_MAX)
break;
net_udp_process_game_info(data, length, sender_addr, 1);
break;
case UPID_DUMP:
if (multi_i_am_master() || Netgame.players[0].protocol.udp.addr != sender_addr || length != UPID_DUMP_SIZE)
break;
if ((Network_status == NETSTAT_WAITING) || (Network_status == NETSTAT_PLAYING))
net_udp_process_dump(data, length, sender_addr);
break;
case UPID_ADDPLAYER:
if (multi_i_am_master() || Netgame.players[0].protocol.udp.addr != sender_addr || length != UPID_SEQUENCE_SIZE)
break;
net_udp_receive_sequence_packet(data, &their, sender_addr);
net_udp_new_player(&their);
break;
case UPID_REQUEST:
if (!multi_i_am_master() || length != UPID_SEQUENCE_SIZE)
break;
net_udp_receive_sequence_packet(data, &their, sender_addr);
if (Network_status == NETSTAT_STARTING)
{
// Someone wants to join our game!
net_udp_add_player(&their);
}
else if (Network_status == NETSTAT_WAITING)
{
// Someone is ready to recieve a sync packet
net_udp_process_request(&their);
}
else if (Network_status == NETSTAT_PLAYING)
{
// Someone wants to join a game in progress!
if (Netgame.RefusePlayers)
net_udp_do_refuse_stuff (&their);
else
net_udp_welcome_player(&their);
}
break;
case UPID_QUIT_JOINING:
if (!multi_i_am_master() || length != UPID_SEQUENCE_SIZE)
break;
net_udp_receive_sequence_packet(data, &their, sender_addr);
if (Network_status == NETSTAT_STARTING)
net_udp_remove_player( &their );
else if ((Network_status == NETSTAT_PLAYING) && (Network_send_objects))
net_udp_stop_resync( &their );
break;
case UPID_SYNC:
if (multi_i_am_master() || length > UPID_GAME_INFO_SIZE_MAX || Network_status != NETSTAT_WAITING)
break;
net_udp_read_sync_packet(data, length, sender_addr);
break;
case UPID_OBJECT_DATA:
if (multi_i_am_master() || length > UPID_MAX_SIZE || Network_status != NETSTAT_WAITING)
break;
net_udp_read_object_packet(data);
break;
case UPID_PING:
if (multi_i_am_master() || length != UPID_PING_SIZE)
break;
net_udp_process_ping(data, sender_addr);
break;
case UPID_PONG:
if (!multi_i_am_master() || length != UPID_PONG_SIZE)
break;
net_udp_process_pong(data, sender_addr);
break;
case UPID_ENDLEVEL_H:
if ((!multi_i_am_master()) && ((Network_status == NETSTAT_ENDLEVEL) || (Network_status == NETSTAT_PLAYING)))
net_udp_read_endlevel_packet(data, sender_addr);
break;
case UPID_ENDLEVEL_C:
if ((multi_i_am_master()) && ((Network_status == NETSTAT_ENDLEVEL) || (Network_status == NETSTAT_PLAYING)))
net_udp_read_endlevel_packet(data, sender_addr);
break;
case UPID_PDATA:
net_udp_process_pdata( data, length, sender_addr );
break;
case UPID_MDATA_PNORM:
net_udp_process_mdata( data, length, sender_addr, 0 );
break;
case UPID_MDATA_PNEEDACK:
net_udp_process_mdata( data, length, sender_addr, 1 );
break;
case UPID_MDATA_ACK:
net_udp_noloss_got_ack(data, length);
break;
#if DXX_USE_TRACKER
case UPID_TRACKER_GAMEINFO:
udp_tracker_process_game( data, length, sender_addr );
break;
case UPID_TRACKER_ACK:
if (!multi_i_am_master())
break;
udp_tracker_process_ack( data, length, sender_addr );
break;
case UPID_TRACKER_HOLEPUNCH:
udp_tracker_process_holepunch( data, length, sender_addr );
break;
#endif
default:
con_printf(CON_DEBUG, "unknown packet type received - type %i", data[0]);
break;
}
}
// Packet for end of level syncing
void net_udp_read_endlevel_packet(const uint8_t *data, const _sockaddr &sender_addr)
{
int len = 0;
ubyte tmpvar = 0;
if (multi_i_am_master())
{
playernum_t pnum = data[1];
if (Netgame.players[pnum].protocol.udp.addr != sender_addr)
return;
len += 2;
if (static_cast(data[len]) == CONNECT_DISCONNECTED)
multi_disconnect_player(pnum);
vmplayerptr(pnum)->connected = data[len]; len++;
tmpvar = data[len]; len++;
if ((Network_status != NETSTAT_PLAYING) && (vcplayerptr(pnum)->connected == CONNECT_PLAYING) && (tmpvar < Countdown_seconds_left))
Countdown_seconds_left = tmpvar;
auto &objp = *vmobjptr(vcplayerptr(pnum)->objnum);
auto &player_info = objp.ctype.player_info;
player_info.net_kills_total = GET_INTEL_SHORT(&data[len]);
len += 2;
player_info.net_killed_total = GET_INTEL_SHORT(&data[len]);
len += 2;
range_for (auto &i, kill_matrix[pnum])
{
i = GET_INTEL_SHORT(&(data[len])); len += 2;
}
if (vcplayerptr(pnum)->connected)
Netgame.players[pnum].LastPacketTime = timer_query();
}
else
{
if (Netgame.players[0].protocol.udp.addr != sender_addr)
return;
len++;
tmpvar = data[len]; len++;
if ((Network_status != NETSTAT_PLAYING) && (tmpvar < Countdown_seconds_left))
Countdown_seconds_left = tmpvar;
for (playernum_t i = 0; i < MAX_PLAYERS; i++)
{
if (i == Player_num)
{
len += 5;
continue;
}
if (static_cast(data[len]) == CONNECT_DISCONNECTED)
multi_disconnect_player(i);
auto &objp = *vmobjptr(vcplayerptr(i)->objnum);
auto &player_info = objp.ctype.player_info;
vmplayerptr(i)->connected = data[len]; len++;
player_info.net_kills_total = GET_INTEL_SHORT(&data[len]);
len += 2;
player_info.net_killed_total = GET_INTEL_SHORT(&data[len]);
len += 2;
if (vcplayerptr(i)->connected)
Netgame.players[i].LastPacketTime = timer_query();
}
for (playernum_t i = 0; i < MAX_PLAYERS; i++)
{
for (playernum_t j = 0; j < MAX_PLAYERS; j++)
{
if (i != Player_num)
{
kill_matrix[i][j] = GET_INTEL_SHORT(&(data[len]));
}
len += 2;
}
}
}
}
/*
* Polling loop waiting for sync packet to start game after having sent request
*/
static int net_udp_sync_poll( newmenu *,const d_event &event, const unused_newmenu_userdata_t *)
{
static fix64 t1 = 0;
int rval = 0;
if (event.type != EVENT_WINDOW_DRAW)
return 0;
net_udp_listen();
// Leave if Host disconnects
if (Netgame.players[0].connected == CONNECT_DISCONNECTED)
rval = -2;
if (Network_status != NETSTAT_WAITING) // Status changed to playing, exit the menu
rval = -2;
if (Network_status != NETSTAT_MENU && !Network_rejoined && (timer_query() > t1+F1_0*2))
{
// Poll time expired, re-send request
t1 = timer_query();
auto i = net_udp_send_request();
if (i >= MAX_PLAYERS)
rval = -2;
}
return rval;
}
static int net_udp_start_poll(newmenu *, const d_event &event, start_poll_menu_items *const items)
{
if (event.type != EVENT_WINDOW_DRAW)
return 0;
Assert(Network_status == NETSTAT_STARTING);
auto &menus = items->m;
const unsigned nitems = menus.size();
menus[0].value = 1;
range_for (auto &i, partial_range(menus, N_players, nitems))
i.value = 0;
const auto predicate = [](const newmenu_item &i) {
return i.value;
};
const auto nm = std::count_if(menus.begin(), std::next(menus.begin(), nitems), predicate);
if ( nm > Netgame.max_numplayers ) {
nm_messagebox( TXT_ERROR, 1, TXT_OK, "%s %d %s", TXT_SORRY_ONLY, Netgame.max_numplayers, TXT_NETPLAYERS_IN );
// Turn off the last player highlighted
for (int i = N_players; i > 0; i--)
if (menus[i].value == 1)
{
menus[i].value = 0;
break;
}
}
net_udp_listen();
for (int i=0; i(Netgame.players[i].callsign));
}
const unsigned players_last_poll = items->get_player_count();
if (players_last_poll == Netgame.numplayers)
return 0;
items->set_player_count(Netgame.numplayers);
// A new player
if (players_last_poll < Netgame.numplayers)
{
digi_play_sample (SOUND_HUD_MESSAGE,F1_0);
if (N_players <= Netgame.max_numplayers)
menus[N_players-1].value = 1;
}
else // One got removed...
{
digi_play_sample (SOUND_HUD_KILL,F1_0);
const auto j = std::min(N_players, static_cast(Netgame.max_numplayers));
/* Reset all the user's choices, since there is insufficient
* integration to move the checks based on the position of the
* departed player(s). Without this reset, names would move up
* one line, but checkboxes would not.
*/
range_for (auto &i, partial_range(menus, j))
i.value = 1;
range_for (auto &i, partial_range(menus, j, N_players))
i.value = 0;
range_for (auto &i, partial_range(menus, N_players, players_last_poll))
{
/* The default format string is "%d. "
* For single digit numbers, [3] is the first character
* after the space. For double digit numbers, [3] is the
* space. Users cannot see the trailing space or its
* absence, so always overwrite [3]. This would break if
* the menu allowed more than 99 players.
*/
i.text[3] = 0;
i.value = 0;
}
}
return 0;
}
#if DXX_USE_TRACKER
#define DXX_UDP_MENU_TRACKER_OPTION(VERB) \
DXX_MENUITEM(VERB, CHECK, "Track this game on", opt_tracker, Netgame.Tracker) \
DXX_MENUITEM(VERB, TEXT, tracker_addr_txt, opt_tracker_addr)
#else
#define DXX_UDP_MENU_TRACKER_OPTION(VERB)
#endif
#if defined(DXX_BUILD_DESCENT_I)
#define D2X_UDP_MENU_OPTIONS(VERB) \
#elif defined(DXX_BUILD_DESCENT_II)
#define D2X_UDP_MENU_OPTIONS(VERB) \
DXX_MENUITEM(VERB, CHECK, "Allow Marker camera views", opt_marker_view, Netgame.Allow_marker_view) \
DXX_MENUITEM(VERB, CHECK, "Indestructible lights", opt_light, Netgame.AlwaysLighting) \
DXX_MENUITEM(VERB, CHECK, "Remove Thief at level start", opt_thief_presence, thief_absent) \
DXX_MENUITEM(VERB, CHECK, "Prevent Thief Stealing Energy Weapons", opt_thief_steal_energy, thief_cannot_steal_energy_weapons) \
#endif
constexpr std::integral_constant reactor_invul_time_mini_scale{};
constexpr std::integral_constant reactor_invul_time_scale{};
#if defined(DXX_BUILD_DESCENT_I)
#define D2X_DUPLICATE_POWERUP_OPTIONS(VERB) \
#elif defined(DXX_BUILD_DESCENT_II)
#define D2X_DUPLICATE_POWERUP_OPTIONS(VERB) \
DXX_MENUITEM(VERB, SLIDER, extraAccessory, opt_extra_accessory, accessory, 0, (1 << packed_netduplicate_items::accessory_width) - 1) \
#endif
#define DXX_DUPLICATE_POWERUP_OPTIONS(VERB) \
DXX_MENUITEM(VERB, SLIDER, extraPrimary, opt_extra_primary, primary, 0, (1 << packed_netduplicate_items::primary_width) - 1) \
DXX_MENUITEM(VERB, SLIDER, extraSecondary, opt_extra_secondary, secondary, 0, (1 << packed_netduplicate_items::secondary_width) - 1) \
D2X_DUPLICATE_POWERUP_OPTIONS(VERB)
#define DXX_UDP_MENU_OPTIONS(VERB) \
DXX_MENUITEM(VERB, TEXT, "Game Options", game_label) \
DXX_MENUITEM(VERB, SLIDER, get_annotated_difficulty_string(), opt_difficulty, Netgame.difficulty, 0, (NDL-1)) \
DXX_MENUITEM(VERB, SCALE_SLIDER, srinvul, opt_cinvul, Netgame.control_invul_time, 0, 10, reactor_invul_time_scale) \
DXX_MENUITEM(VERB, SLIDER, PlayText, opt_playtime, Netgame.PlayTimeAllowed, 0, 10) \
DXX_MENUITEM(VERB, SLIDER, KillText, opt_killgoal, Netgame.KillGoal, 0, 20) \
DXX_MENUITEM(VERB, TEXT, "", blank_1) \
DXX_MENUITEM(VERB, TEXT, "Duplicate Powerups", duplicate_label) \
DXX_DUPLICATE_POWERUP_OPTIONS(VERB) \
DXX_MENUITEM(VERB, TEXT, "", blank_5) \
DXX_MENUITEM(VERB, TEXT, "Spawn Options", spawn_label) \
DXX_MENUITEM(VERB, SLIDER, SecludedSpawnText, opt_secluded_spawns, Netgame.SecludedSpawns, 0, MAX_PLAYERS - 1) \
DXX_MENUITEM(VERB, SLIDER, SpawnInvulnerableText, opt_start_invul, Netgame.InvulAppear, 0, 8) \
DXX_MENUITEM(VERB, TEXT, "", blank_2) \
DXX_MENUITEM(VERB, TEXT, "Object Options", powerup_label) \
DXX_MENUITEM(VERB, MENU, "Set Objects allowed...", opt_setpower) \
DXX_MENUITEM(VERB, MENU, "Set Objects granted at spawn...", opt_setgrant) \
DXX_MENUITEM(VERB, TEXT, "", blank_3) \
DXX_MENUITEM(VERB, TEXT, "Misc. Options", misc_label) \
DXX_MENUITEM(VERB, CHECK, TXT_SHOW_ON_MAP, opt_show_on_map, Netgame.game_flag.show_on_map) \
D2X_UDP_MENU_OPTIONS(VERB) \
DXX_MENUITEM(VERB, CHECK, "Bright player ships", opt_bright, Netgame.BrightPlayers) \
DXX_MENUITEM(VERB, CHECK, "Show enemy names on HUD", opt_show_names, Netgame.ShowEnemyNames) \
DXX_MENUITEM(VERB, CHECK, "No friendly fire (Team, Coop)", opt_ffire, Netgame.NoFriendlyFire) \
DXX_MENUITEM(VERB, FCHECK, (Game_mode & GM_MULTI_COOP) ? "Allow coop mouselook" : "Allow anarchy mouselook", opt_mouselook, Netgame.MouselookFlags, MouselookMPFlag(Game_mode)) \
DXX_MENUITEM(VERB, TEXT, "", blank_4) \
DXX_MENUITEM(VERB, TEXT, "Network Options", network_label) \
DXX_MENUITEM(VERB, TEXT, "Packets per second (" DXX_STRINGIZE_PPS(MIN_PPS) " - " DXX_STRINGIZE_PPS(MAX_PPS) ")", opt_label_pps) \
DXX_MENUITEM(VERB, INPUT, packstring, opt_packets) \
DXX_MENUITEM(VERB, TEXT, "Network port", opt_label_port) \
DXX_MENUITEM(VERB, INPUT, portstring, opt_port) \
DXX_UDP_MENU_TRACKER_OPTION(VERB)
#define DXX_STRINGIZE_PPS2(X) #X
#define DXX_STRINGIZE_PPS(X) DXX_STRINGIZE_PPS2(X)
static void net_udp_set_power (void)
{
newmenu_item m[multi_allow_powerup_text.size()];
for (int i = 0; i < multi_allow_powerup_text.size(); i++)
{
nm_set_item_checkbox(m[i], multi_allow_powerup_text[i], (Netgame.AllowedItems >> i) & 1);
}
newmenu_do1( NULL, "Objects to allow", MULTI_ALLOW_POWERUP_MAX, m, unused_newmenu_subfunction, unused_newmenu_userdata, 0 );
Netgame.AllowedItems &= ~NETFLAG_DOPOWERUP;
for (int i = 0; i < multi_allow_powerup_text.size(); i++)
if (m[i].value)
Netgame.AllowedItems |= (1 << i);
}
#if defined(DXX_BUILD_DESCENT_I)
#define D2X_GRANT_POWERUP_MENU(VERB)
#elif defined(DXX_BUILD_DESCENT_II)
#define D2X_GRANT_POWERUP_MENU(VERB) \
DXX_MENUITEM(VERB, CHECK, NETFLAG_LABEL_GAUSS, opt_gauss, menu_bit_wrapper(flags, NETGRANT_GAUSS)) \
DXX_MENUITEM(VERB, CHECK, NETFLAG_LABEL_HELIX, opt_helix, menu_bit_wrapper(flags, NETGRANT_HELIX)) \
DXX_MENUITEM(VERB, CHECK, NETFLAG_LABEL_PHOENIX, opt_phoenix, menu_bit_wrapper(flags, NETGRANT_PHOENIX)) \
DXX_MENUITEM(VERB, CHECK, NETFLAG_LABEL_OMEGA, opt_omega, menu_bit_wrapper(flags, NETGRANT_OMEGA)) \
DXX_MENUITEM(VERB, CHECK, NETFLAG_LABEL_AFTERBURNER, opt_afterburner, menu_bit_wrapper(flags, NETGRANT_AFTERBURNER)) \
DXX_MENUITEM(VERB, CHECK, NETFLAG_LABEL_AMMORACK, opt_ammo_rack, menu_bit_wrapper(flags, NETGRANT_AMMORACK)) \
DXX_MENUITEM(VERB, CHECK, NETFLAG_LABEL_CONVERTER, opt_converter, menu_bit_wrapper(flags, NETGRANT_CONVERTER)) \
DXX_MENUITEM(VERB, CHECK, NETFLAG_LABEL_HEADLIGHT, opt_headlight, menu_bit_wrapper(flags, NETGRANT_HEADLIGHT)) \
#endif
#define DXX_GRANT_POWERUP_MENU(VERB) \
DXX_MENUITEM(VERB, NUMBER, "Laser level", opt_laser_level, menu_number_bias_wrapper<1>(laser_level), LASER_LEVEL_1 + 1, DXX_MAXIMUM_LASER_LEVEL + 1) \
DXX_MENUITEM(VERB, CHECK, NETFLAG_LABEL_QUAD, opt_quad_lasers, menu_bit_wrapper(flags, NETGRANT_QUAD)) \
DXX_MENUITEM(VERB, CHECK, NETFLAG_LABEL_VULCAN, opt_vulcan, menu_bit_wrapper(flags, NETGRANT_VULCAN)) \
DXX_MENUITEM(VERB, CHECK, NETFLAG_LABEL_SPREAD, opt_spreadfire, menu_bit_wrapper(flags, NETGRANT_SPREAD)) \
DXX_MENUITEM(VERB, CHECK, NETFLAG_LABEL_PLASMA, opt_plasma, menu_bit_wrapper(flags, NETGRANT_PLASMA)) \
DXX_MENUITEM(VERB, CHECK, NETFLAG_LABEL_FUSION, opt_fusion, menu_bit_wrapper(flags, NETGRANT_FUSION)) \
D2X_GRANT_POWERUP_MENU(VERB)
namespace {
class more_game_options_menu_items
{
char packstring[sizeof("99")];
array portstring;
char srinvul[sizeof("Reactor life: 50 min")];
char PlayText[sizeof("Max time: 50 min")];
char SpawnInvulnerableText[sizeof("Invul. Time: 0.0 sec")];
char SecludedSpawnText[sizeof("Use 0 Furthest Sites")];
char KillText[sizeof("Kill goal: 000 kills")];
char extraPrimary[sizeof("Primaries: 0")];
char extraSecondary[sizeof("Secondaries: 0")];
#if defined(DXX_BUILD_DESCENT_II)
char extraAccessory[sizeof("Accessories: 0")];
#endif
#if DXX_USE_TRACKER
char tracker_addr_txt[sizeof("65535") + 28];
#endif
typedef array menu_array;
menu_array m;
static const char *get_annotated_difficulty_string()
{
static const array text{{
"Difficulty: Trainee",
"Difficulty: Rookie",
"Difficulty: Hotshot",
"Difficulty: Ace",
"Difficulty: Insane"
}};
switch (const auto d = Netgame.difficulty)
{
case 0:
case 1:
case 2:
case 3:
case 4:
return text[d];
default:
return &text[3][16];
}
}
static int handler(newmenu *, const d_event &event, more_game_options_menu_items *items);
public:
menu_array &get_menu_items()
{
return m;
}
void update_difficulty_string()
{
/* Cast away const because newmenu_item uses `char *text` even
* for fields where text is treated as `const char *`.
*/
m[opt_difficulty].text = const_cast(get_annotated_difficulty_string());
}
void update_extra_primary_string(unsigned primary)
{
snprintf(extraPrimary, sizeof(extraPrimary), "Primaries: %u", primary);
}
void update_extra_secondary_string(unsigned secondary)
{
snprintf(extraSecondary, sizeof(extraSecondary), "Secondaries: %u", secondary);
}
#if defined(DXX_BUILD_DESCENT_II)
void update_extra_accessory_string(unsigned accessory)
{
snprintf(extraAccessory, sizeof(extraAccessory), "Accessories: %u", accessory);
}
#endif
void update_packstring()
{
snprintf(packstring, sizeof(packstring), "%u", Netgame.PacketsPerSec);
}
void update_portstring()
{
snprintf(&portstring[0], portstring.size(), "%hu", UDP_MyPort);
}
void update_reactor_life_string(unsigned t)
{
snprintf(srinvul, sizeof(srinvul), "%s: %u %s", TXT_REACTOR_LIFE, t, TXT_MINUTES_ABBREV);
}
void update_max_play_time_string()
{
snprintf(PlayText, sizeof(PlayText), "Max time: %d %s", Netgame.PlayTimeAllowed * 5, TXT_MINUTES_ABBREV);
}
void update_spawn_invuln_string()
{
snprintf(SpawnInvulnerableText, sizeof(SpawnInvulnerableText), "Invul. Time: %1.1f sec", static_cast(Netgame.InvulAppear) / 2);
}
void update_secluded_spawn_string()
{
snprintf(SecludedSpawnText, sizeof(SecludedSpawnText), "Use %u Furthest Sites", Netgame.SecludedSpawns + 1);
}
void update_kill_goal_string()
{
snprintf(KillText, sizeof(KillText), "Kill Goal: %3d", Netgame.KillGoal * 5);
}
enum
{
DXX_UDP_MENU_OPTIONS(ENUM)
};
more_game_options_menu_items()
{
update_difficulty_string();
update_packstring();
update_portstring();
update_reactor_life_string(Netgame.control_invul_time / reactor_invul_time_mini_scale);
update_max_play_time_string();
update_spawn_invuln_string();
update_secluded_spawn_string();
update_kill_goal_string();
auto primary = Netgame.DuplicatePowerups.get_primary_count();
auto secondary = Netgame.DuplicatePowerups.get_secondary_count();
#if defined(DXX_BUILD_DESCENT_II)
auto accessory = Netgame.DuplicatePowerups.get_accessory_count();
const auto thief_absent = Netgame.ThiefModifierFlags & ThiefModifier::Absent;
const auto thief_cannot_steal_energy_weapons = Netgame.ThiefModifierFlags & ThiefModifier::NoEnergyWeapons;
update_extra_accessory_string(accessory);
#endif
update_extra_primary_string(primary);
update_extra_secondary_string(secondary);
DXX_UDP_MENU_OPTIONS(ADD);
#if DXX_USE_TRACKER
const auto &tracker_addr = CGameArg.MplTrackerAddr;
if (tracker_addr.empty())
{
nm_set_item_text(m[opt_tracker], "Tracker use disabled");
nm_set_item_text(m[opt_tracker_addr], "");
}
else
{
snprintf(tracker_addr_txt, sizeof(tracker_addr_txt), "%s:%u", tracker_addr.c_str(), CGameArg.MplTrackerPort);
}
#endif
}
void read() const
{
unsigned primary, secondary;
#if defined(DXX_BUILD_DESCENT_II)
unsigned accessory;
uint8_t thief_absent;
uint8_t thief_cannot_steal_energy_weapons;
#endif
DXX_UDP_MENU_OPTIONS(READ);
auto &items = Netgame.DuplicatePowerups;
items.set_primary_count(primary);
items.set_secondary_count(secondary);
#if defined(DXX_BUILD_DESCENT_II)
items.set_accessory_count(accessory);
Netgame.ThiefModifierFlags =
(thief_absent ? ThiefModifier::Absent : 0) |
(thief_cannot_steal_energy_weapons ? ThiefModifier::NoEnergyWeapons : 0);
#endif
char *p;
auto pps = strtol(packstring, &p, 10);
if (!*p)
Netgame.PacketsPerSec = pps;
convert_text_portstring(portstring, UDP_MyPort, false, false);
}
static void net_udp_more_game_options();
};
class grant_powerup_menu_items
{
public:
enum
{
DXX_GRANT_POWERUP_MENU(ENUM)
};
array m;
grant_powerup_menu_items(const unsigned laser_level, const packed_spawn_granted_items p)
{
auto &flags = p.mask;
DXX_GRANT_POWERUP_MENU(ADD);
}
void read(packed_spawn_granted_items &p) const
{
unsigned laser_level, flags = 0;
DXX_GRANT_POWERUP_MENU(READ);
p.mask = laser_level | flags;
}
};
}
static void net_udp_set_grant_power()
{
const auto SpawnGrantedItems = Netgame.SpawnGrantedItems;
grant_powerup_menu_items menu{map_granted_flags_to_laser_level(SpawnGrantedItems), SpawnGrantedItems};
newmenu_do(nullptr, "Powerups granted at player spawn", menu.m, unused_newmenu_subfunction, unused_newmenu_userdata);
menu.read(Netgame.SpawnGrantedItems);
}
void more_game_options_menu_items::net_udp_more_game_options()
{
int i;
more_game_options_menu_items menu;
for (;;)
{
i = newmenu_do(nullptr, "Advanced netgame options", menu.get_menu_items(), handler, &menu);
switch (i)
{
case opt_setpower:
net_udp_set_power();
continue;
case opt_setgrant:
net_udp_set_grant_power();
continue;
default:
break;
}
break;
}
menu.read();
if (Netgame.PacketsPerSec>MAX_PPS)
{
Netgame.PacketsPerSec=MAX_PPS;
nm_messagebox(TXT_ERROR, 1, TXT_OK, "Packet value out of range\nSetting value to %i",MAX_PPS);
}
if (Netgame.PacketsPerSec(event).citem;
auto &menus = items->get_menu_items();
if (citem == opt_difficulty)
{
Netgame.difficulty = menus[opt_difficulty].value;
items->update_difficulty_string();
}
else if (citem == opt_cinvul)
items->update_reactor_life_string(menus[opt_cinvul].value * (reactor_invul_time_scale / reactor_invul_time_mini_scale));
else if (citem == opt_playtime)
{
if (Game_mode & GM_MULTI_COOP)
{
nm_messagebox ("Sorry",1,TXT_OK,"You can't change those for coop!");
menus[opt_playtime].value=0;
return 0;
}
Netgame.PlayTimeAllowed=menus[opt_playtime].value;
items->update_max_play_time_string();
}
else if (citem == opt_killgoal)
{
if (Game_mode & GM_MULTI_COOP)
{
nm_messagebox ("Sorry",1,TXT_OK,"You can't change those for coop!");
menus[opt_killgoal].value=0;
return 0;
}
Netgame.KillGoal=menus[opt_killgoal].value;
items->update_kill_goal_string();
}
else if(citem == opt_extra_primary)
{
auto primary = menus[opt_extra_primary].value;
items->update_extra_primary_string(primary);
}
else if(citem == opt_extra_secondary)
{
auto secondary = menus[opt_extra_secondary].value;
items->update_extra_secondary_string(secondary);
}
#if defined(DXX_BUILD_DESCENT_II)
else if(citem == opt_extra_accessory)
{
auto accessory = menus[opt_extra_accessory].value;
items->update_extra_accessory_string(accessory);
}
#endif
else if (citem == opt_start_invul)
{
Netgame.InvulAppear = menus[opt_start_invul].value;
items->update_spawn_invuln_string();
}
else if (citem == opt_secluded_spawns)
{
Netgame.SecludedSpawns = menus[opt_secluded_spawns].value;
items->update_secluded_spawn_string();
}
break;
}
default:
break;
}
return 0;
}
namespace {
struct param_opt
{
enum {
name = 2,
label_level,
level,
};
int start_game, mode, mode_end, moreopts;
int closed, refuse, maxnet, anarchy, team_anarchy, robot_anarchy, coop, bounty;
#if defined(DXX_BUILD_DESCENT_II)
int capture, hoard, team_hoard;
#endif
char slevel[sizeof("S100")] = "1";
char srmaxnet[sizeof("Maximum players: 99")];
array m;
void update_netgame_max_players()
{
Netgame.max_numplayers = m[maxnet].value + 2;
update_max_players_string();
}
void update_max_players_string()
{
snprintf(srmaxnet, sizeof(srmaxnet), "Maximum players: %u", Netgame.max_numplayers);
}
};
}
namespace dsx {
static int net_udp_game_param_handler( newmenu *menu,const d_event &event, param_opt *opt )
{
newmenu_item *menus = newmenu_get_items(menu);
switch (event.type)
{
case EVENT_NEWMENU_CHANGED:
{
auto &citem = static_cast(event).citem;
#if defined(DXX_BUILD_DESCENT_I)
if (citem == opt->team_anarchy)
{
menus[opt->closed].value = 1;
menus[opt->closed-1].value = 0;
menus[opt->closed+1].value = 0;
}
#elif defined(DXX_BUILD_DESCENT_II)
if (((HoardEquipped() && (citem == opt->team_hoard)) || ((citem == opt->team_anarchy) || (citem == opt->capture))) && !menus[opt->closed].value && !menus[opt->refuse].value)
{
menus[opt->refuse].value = 1;
menus[opt->refuse-1].value = 0;
menus[opt->refuse-2].value = 0;
}
#endif
auto &slider = menus[opt->maxnet].slider();
if (menus[opt->coop].value)
{
if (menus[opt->maxnet].value>2)
{
menus[opt->maxnet].value=2;
}
if (slider.max_value > 2)
{
slider.max_value = 2;
}
opt->update_netgame_max_players();
Netgame.game_flag.show_on_map = 1;
if (Netgame.PlayTimeAllowed || Netgame.KillGoal)
{
Netgame.PlayTimeAllowed=0;
Netgame.KillGoal=0;
}
}
else // if !Coop game
{
if (slider.max_value < 6)
{
menus[opt->maxnet].value=6;
slider.max_value = 6;
opt->update_netgame_max_players();
}
}
if (citem == opt->level)
{
auto &slevel = opt->slevel;
#if defined(DXX_BUILD_DESCENT_I)
if (tolower(static_cast(*slevel)) == 's')
Netgame.levelnum = -atoi(slevel+1);
else
#endif
Netgame.levelnum = atoi(slevel);
}
if (citem == opt->maxnet)
{
opt->update_netgame_max_players();
}
if ((citem >= opt->mode) && (citem <= opt->mode_end))
{
if ( menus[opt->anarchy].value )
Netgame.gamemode = NETGAME_ANARCHY;
else if (menus[opt->team_anarchy].value) {
Netgame.gamemode = NETGAME_TEAM_ANARCHY;
}
#if defined(DXX_BUILD_DESCENT_II)
else if (menus[opt->capture].value)
Netgame.gamemode = NETGAME_CAPTURE_FLAG;
else if (HoardEquipped() && menus[opt->hoard].value)
Netgame.gamemode = NETGAME_HOARD;
else if (HoardEquipped() && menus[opt->team_hoard].value)
Netgame.gamemode = NETGAME_TEAM_HOARD;
#endif
else if( menus[opt->bounty].value )
Netgame.gamemode = NETGAME_BOUNTY;
else if (ANARCHY_ONLY_MISSION) {
int i = 0;
nm_messagebox(NULL, 1, TXT_OK, TXT_ANARCHY_ONLY_MISSION);
for (i = opt->mode; i <= opt->mode_end; i++)
menus[i].value = 0;
menus[opt->anarchy].value = 1;
return 0;
}
else if ( menus[opt->robot_anarchy].value )
Netgame.gamemode = NETGAME_ROBOT_ANARCHY;
else if ( menus[opt->coop].value )
Netgame.gamemode = NETGAME_COOPERATIVE;
else Int3(); // Invalid mode -- see Rob
}
Netgame.game_flag.closed = menus[opt->closed].value;
Netgame.RefusePlayers=menus[opt->refuse].value;
break;
}
case EVENT_NEWMENU_SELECTED:
{
auto &citem = static_cast(event).citem;
#if defined(DXX_BUILD_DESCENT_I)
if ((Netgame.levelnum < Last_secret_level) || (Netgame.levelnum > Last_level) || (Netgame.levelnum == 0))
#elif defined(DXX_BUILD_DESCENT_II)
if ((Netgame.levelnum < 1) || (Netgame.levelnum > Last_level))
#endif
{
auto &slevel = opt->slevel;
nm_messagebox(TXT_ERROR, 1, TXT_OK, TXT_LEVEL_OUT_RANGE );
strcpy(slevel, "1");
return 1;
}
if (citem==opt->moreopts)
{
if ( menus[opt->coop].value )
Game_mode=GM_MULTI_COOP;
more_game_options_menu_items::net_udp_more_game_options();
Game_mode=0;
return 1;
}
if (citem==opt->start_game)
return !net_udp_start_game();
return 1;
}
default:
break;
}
return 0;
}
}
namespace dsx {
window_event_result net_udp_setup_game()
{
int optnum;
param_opt opt;
auto &m = opt.m;
char level_text[32];
net_udp_init();
multi_new_game();
change_playernum_to(0);
const auto &self = get_local_player();
{
range_for (auto &i, Players)
if (&i != &self)
i.callsign = {};
}
Netgame.max_numplayers = MAX_PLAYERS;
Netgame.KillGoal=0;
Netgame.PlayTimeAllowed=0;
#if defined(DXX_BUILD_DESCENT_I)
Netgame.RefusePlayers=0;
#elif defined(DXX_BUILD_DESCENT_II)
Netgame.Allow_marker_view=1;
Netgame.ThiefModifierFlags = 0;
#endif
Netgame.difficulty=PlayerCfg.DefaultDifficulty;
Netgame.PacketsPerSec=DEFAULT_PPS;
snprintf(Netgame.game_name.data(), Netgame.game_name.size(), "%s%s", static_cast(self.callsign), TXT_S_GAME);
reset_UDP_MyPort();
Netgame.BrightPlayers = 1;
Netgame.InvulAppear = 4;
Netgame.SecludedSpawns = MAX_PLAYERS - 1;
Netgame.AllowedItems = NETFLAG_DOPOWERUP;
Netgame.PacketLossPrevention = 1;
Netgame.NoFriendlyFire = 0;
Netgame.MouselookFlags = 0;
#if DXX_USE_TRACKER
Netgame.Tracker = 1;
#endif
read_netgame_profile(&Netgame);
if (Netgame.gamemode == NETGAME_COOPERATIVE) // did we restore Coop as default? then fix max players right now!
Netgame.max_numplayers = 4;
#if defined(DXX_BUILD_DESCENT_II)
if (!HoardEquipped() && (Netgame.gamemode == NETGAME_HOARD || Netgame.gamemode == NETGAME_TEAM_HOARD)) // did we restore a hoard mode but don't have hoard installed right now? then fall back to anarchy!
Netgame.gamemode = NETGAME_ANARCHY;
#endif
Netgame.mission_name.copy_if(Current_mission_filename, Netgame.mission_name.size());
Netgame.mission_title = Current_mission_longname;
Netgame.levelnum = 1;
optnum = 0;
opt.start_game=optnum;
nm_set_item_menu( m[optnum], "Start Game"); optnum++;
nm_set_item_text(m[optnum], TXT_DESCRIPTION); optnum++;
nm_set_item_input(m[optnum], Netgame.game_name); optnum++;
#define DXX_LEVEL_FORMAT_LEADER "%s (1-%d"
#define DXX_LEVEL_FORMAT_TRAILER ")"
#if defined(DXX_BUILD_DESCENT_I)
if (Last_secret_level == -1)
/* Exactly one secret level */
snprintf(level_text, sizeof(level_text), DXX_LEVEL_FORMAT_LEADER ", S1" DXX_LEVEL_FORMAT_TRAILER, TXT_LEVEL_, Last_level);
else if (Last_secret_level)
/* More than one secret level */
snprintf(level_text, sizeof(level_text), DXX_LEVEL_FORMAT_LEADER ", S1-S%d" DXX_LEVEL_FORMAT_TRAILER, TXT_LEVEL_, Last_level, -Last_secret_level);
else
/* No secret levels */
#endif
snprintf(level_text, sizeof(level_text), DXX_LEVEL_FORMAT_LEADER DXX_LEVEL_FORMAT_TRAILER, TXT_LEVEL_, Last_level);
#undef DXX_LEVEL_FORMAT_TRAILER
#undef DXX_LEVEL_FORMAT_LEADER
nm_set_item_text(m[optnum], level_text); optnum++;
nm_set_item_input(m[optnum], opt.slevel); optnum++;
nm_set_item_text(m[optnum], TXT_OPTIONS); optnum++;
opt.mode = optnum;
nm_set_item_radio(m[optnum], TXT_ANARCHY,(Netgame.gamemode == NETGAME_ANARCHY),0); opt.anarchy=optnum; optnum++;
nm_set_item_radio(m[optnum], TXT_TEAM_ANARCHY,(Netgame.gamemode == NETGAME_TEAM_ANARCHY),0); opt.team_anarchy=optnum; optnum++;
nm_set_item_radio(m[optnum], TXT_ANARCHY_W_ROBOTS,(Netgame.gamemode == NETGAME_ROBOT_ANARCHY),0); opt.robot_anarchy=optnum; optnum++;
nm_set_item_radio(m[optnum], TXT_COOPERATIVE,(Netgame.gamemode == NETGAME_COOPERATIVE),0); opt.coop=optnum; optnum++;
#if defined(DXX_BUILD_DESCENT_II)
nm_set_item_radio(m[optnum], "Capture the flag",(Netgame.gamemode == NETGAME_CAPTURE_FLAG),0); opt.capture=optnum; optnum++;
if (HoardEquipped())
{
nm_set_item_radio(m[optnum], "Hoard",(Netgame.gamemode == NETGAME_HOARD),0); opt.hoard=optnum; optnum++;
nm_set_item_radio(m[optnum], "Team Hoard",(Netgame.gamemode == NETGAME_TEAM_HOARD),0); opt.team_hoard=optnum; optnum++;
}
else
{
opt.hoard = opt.team_hoard = 0; // NOTE: Make sure if you use these, use them in connection with HoardEquipped() only!
}
#endif
nm_set_item_radio(m[optnum], "Bounty", ( Netgame.gamemode & NETGAME_BOUNTY ), 0); opt.mode_end=opt.bounty=optnum; optnum++;
nm_set_item_text(m[optnum], ""); optnum++;
nm_set_item_radio(m[optnum], "Open game",(!Netgame.RefusePlayers && !Netgame.game_flag.closed),1); optnum++;
opt.closed = optnum;
nm_set_item_radio(m[optnum], TXT_CLOSED_GAME,Netgame.game_flag.closed,1); optnum++;
opt.refuse = optnum;
nm_set_item_radio(m[optnum], "Restricted Game ",Netgame.RefusePlayers,1); optnum++;
opt.maxnet = optnum;
opt.update_max_players_string();
nm_set_item_slider(m[optnum], opt.srmaxnet, Netgame.max_numplayers - 2, 0, Netgame.max_numplayers - 2); optnum++;
opt.moreopts=optnum;
nm_set_item_menu( m[optnum], "Advanced Options"); optnum++;
Assert(optnum <= 20);
int i;
i = newmenu_do1(nullptr, TXT_NETGAME_SETUP, optnum, m.data(), net_udp_game_param_handler, &opt, opt.start_game);
if (i < 0)
net_udp_close();
write_netgame_profile(&Netgame);
#if DXX_USE_TRACKER
/* Force off _after_ writing profile, so that command line does not
* change ngp file.
*/
if (CGameArg.MplTrackerAddr.empty())
Netgame.Tracker = 0;
#endif
return (i >= 0) ? window_event_result::close : window_event_result::handled;
}
}
namespace dsx {
static void net_udp_set_game_mode(const int gamemode)
{
Show_kill_list = 1;
if ( gamemode == NETGAME_ANARCHY )
Game_mode = GM_NETWORK;
else if ( gamemode == NETGAME_ROBOT_ANARCHY )
Game_mode = GM_NETWORK | GM_MULTI_ROBOTS;
else if ( gamemode == NETGAME_COOPERATIVE )
Game_mode = GM_NETWORK | GM_MULTI_COOP | GM_MULTI_ROBOTS;
#if defined(DXX_BUILD_DESCENT_II)
else if (gamemode == NETGAME_CAPTURE_FLAG)
{
Game_mode = GM_NETWORK | GM_TEAM | GM_CAPTURE;
Show_kill_list=3;
}
else if (HoardEquipped() && gamemode == NETGAME_HOARD)
Game_mode = GM_NETWORK | GM_HOARD;
else if (HoardEquipped() && gamemode == NETGAME_TEAM_HOARD)
{
Game_mode = GM_NETWORK | GM_HOARD | GM_TEAM;
Show_kill_list=3;
}
#endif
else if( gamemode == NETGAME_BOUNTY )
Game_mode = GM_NETWORK | GM_BOUNTY;
else if ( gamemode == NETGAME_TEAM_ANARCHY )
{
Game_mode = GM_NETWORK | GM_TEAM;
Show_kill_list = 3;
}
else
Int3();
}
}
namespace dsx {
void net_udp_read_sync_packet(const uint8_t * data, uint_fast32_t data_len, const _sockaddr &sender_addr)
{
if (data)
{
net_udp_process_game_info(data, data_len, sender_addr, 0);
}
N_players = Netgame.numplayers;
Difficulty_level = Netgame.difficulty;
Network_status = Netgame.game_status;
if (Netgame.segments_checksum != my_segments_checksum)
{
Network_status = NETSTAT_MENU;
net_udp_close();
nm_messagebox(TXT_ERROR, 1, TXT_OK, TXT_NETLEVEL_NMATCH);
throw multi::level_checksum_mismatch();
}
// Discover my player number
callsign_t temp_callsign = get_local_player().callsign;
Player_num = MULTI_PNUM_UNDEF;
for (unsigned i = 0; i < N_players; ++i)
{
if (i == Netgame.protocol.udp.your_index && Netgame.players[i].callsign == temp_callsign)
{
if (Player_num!=MULTI_PNUM_UNDEF) {
Int3(); // Hey, we've found ourselves twice
Network_status = NETSTAT_MENU;
return;
}
change_playernum_to(i);
}
auto &plr = *vmplayerptr(i);
plr.callsign = Netgame.players[i].callsign;
plr.connected = Netgame.players[i].connected;
auto &objp = *vmobjptr(plr.objnum);
auto &player_info = objp.ctype.player_info;
player_info.net_kills_total = Netgame.player_kills[i];
player_info.net_killed_total = Netgame.killed[i];
if ((Network_rejoined) || (i != Player_num))
player_info.mission.score = Netgame.player_score[i];
}
kill_matrix = Netgame.kills;
if (Player_num >= MAX_PLAYERS)
{
Network_status = NETSTAT_MENU;
throw multi::local_player_not_playing();
}
#if defined(DXX_BUILD_DESCENT_I)
{
auto &player_info = get_local_plrobj().ctype.player_info;
PlayerCfg.NetlifeKills -= player_info.net_kills_total;
PlayerCfg.NetlifeKilled -= player_info.net_killed_total;
}
#endif
auto &plr = get_local_player();
if (Network_rejoined)
{
net_udp_process_monitor_vector(Netgame.monitor_vector);
plr.time_level = Netgame.level_time;
}
team_kills = Netgame.team_kills;
plr.connected = CONNECT_PLAYING;
Netgame.players[Player_num].connected = CONNECT_PLAYING;
Netgame.players[Player_num].rank=GetMyNetRanking();
if (!Network_rejoined)
{
for (unsigned i = 0; i < NumNetPlayerPositions; ++i)
{
const auto &&o = vmobjptridx(vcplayerptr(i)->objnum);
const auto &p = Player_init[Netgame.locations[i]];
o->pos = p.pos;
o->orient = p.orient;
obj_relink(o, vmsegptridx(p.segnum));
}
}
get_local_plrobj().type = OBJ_PLAYER;
Network_status = NETSTAT_PLAYING;
multi_sort_kill_list();
}
}
static int net_udp_send_sync(void)
{
int np;
// Check if there are enough starting positions
if (NumNetPlayerPositions < Netgame.max_numplayers)
{
nm_messagebox(TXT_ERROR, 1, TXT_OK, "Not enough start positions\n(set %d got %d)\nNetgame aborted", Netgame.max_numplayers, NumNetPlayerPositions);
// Tell everyone we're bailing
Netgame.numplayers = 0;
for (unsigned i = 1; i < N_players; ++i)
{
if (vcplayerptr(i)->connected == CONNECT_DISCONNECTED)
continue;
const auto &addr = Netgame.players[i].protocol.udp.addr;
net_udp_dump_player(addr, DUMP_ABORTED);
net_udp_send_game_info(addr, &addr, UPID_GAME_INFO);
}
net_udp_broadcast_game_info(UPID_GAME_INFO_LITE);
return -1;
}
// Randomize their starting locations...
d_srand(static_cast(timer_query()));
for (unsigned i=0; iconnected)
vmplayerptr(i)->connected = CONNECT_PLAYING; // Get rid of endlevel connect statuses
if (Game_mode & GM_MULTI_COOP)
Netgame.locations[i] = i;
else {
do
{
np = d_rand() % NumNetPlayerPositions;
range_for (auto &j, partial_const_range(Netgame.locations, i))
{
if (j==np)
{
np =-1;
break;
}
}
} while (np<0);
// np is a location that is not used anywhere else..
Netgame.locations[i]=np;
}
}
// Push current data into the sync packet
net_udp_update_netgame();
Netgame.game_status = NETSTAT_PLAYING;
Netgame.segments_checksum = my_segments_checksum;
for (unsigned i = 0; i < N_players; ++i)
{
if (!vcplayerptr(i)->connected || i == Player_num)
continue;
const auto &addr = Netgame.players[i].protocol.udp.addr;
net_udp_send_game_info(addr, &addr, UPID_SYNC);
}
net_udp_read_sync_packet(NULL, 0, Netgame.players[0].protocol.udp.addr); // Read it myself, as if I had sent it
return 0;
}
static int net_udp_select_teams()
{
newmenu_item m[MAX_PLAYERS+4];
int choice, opt, opt_team_b;
ubyte team_vector = 0;
int pnums[MAX_PLAYERS+2];
// One-time initialization
for (int i = N_players/2; i < N_players; i++) // Put first half of players on team A
{
team_vector |= (1 << i);
}
array team_names;
team_names[0].copy(TXT_BLUE, ~0ul);
team_names[1].copy(TXT_RED, ~0ul);
// Here comes da menu
menu:
nm_set_item_input(m[0], team_names[0].buffer());
opt = 1;
for (int i = 0; i < N_players; i++)
{
if (!(team_vector & (1 << i)))
{
nm_set_item_menu( m[opt], Netgame.players[i].callsign); pnums[opt] = i; opt++;
}
}
opt_team_b = opt;
nm_set_item_input(m[opt], team_names[1].buffer());
opt++;
for (int i = 0; i < N_players; i++)
{
if (team_vector & (1 << i))
{
nm_set_item_menu( m[opt], Netgame.players[i].callsign); pnums[opt] = i; opt++;
}
}
nm_set_item_text(m[opt], ""); opt++;
nm_set_item_menu( m[opt], TXT_ACCEPT); opt++;
Assert(opt <= MAX_PLAYERS+4);
choice = newmenu_do(NULL, TXT_TEAM_SELECTION, opt, m, unused_newmenu_subfunction, unused_newmenu_userdata);
if (choice == opt-1)
{
#if 0 // no need to wait for other players
if ((opt-2-opt_team_b < 2) || (opt_team_b == 1))
{
nm_messagebox(NULL, 1, TXT_OK, TXT_TEAM_MUST_ONE);
#ifdef RELEASE
goto menu;
#endif
}
#endif
Netgame.team_vector = team_vector;
Netgame.team_name = team_names;
return 1;
}
else if ((choice > 0) && (choice < opt_team_b)) {
team_vector |= (1 << pnums[choice]);
}
else if ((choice > opt_team_b) && (choice < opt-2)) {
team_vector &= ~(1 << pnums[choice]);
}
else if (choice == -1)
return 0;
goto menu;
}
namespace dsx {
static int net_udp_select_players()
{
int j;
char text[MAX_PLAYERS+4][45];
char title[50];
unsigned save_nplayers; //how may people would like to join
net_udp_add_player( &UDP_Seq );
start_poll_menu_items spd;
for (int i=0; i< MAX_PLAYERS+4; i++ ) {
snprintf(text[i], sizeof(text[i]), "%d. ", i + 1);
nm_set_item_checkbox(spd.m[i], text[i], 0);
}
spd.m[0].value = 1; // Assume server will play...
const auto &&rankstr = GetRankStringWithSpace(Netgame.players[Player_num].rank);
snprintf( text[0], sizeof(text[0]), "%d. %s%s%-20s", 1, rankstr.first, rankstr.second, static_cast(get_local_player().callsign));
snprintf(title, sizeof(title), "%s %d %s", TXT_TEAM_SELECT, Netgame.max_numplayers, TXT_TEAM_PRESS_ENTER);
#if DXX_USE_TRACKER
if( Netgame.Tracker )
{
TrackerAckStatus = TrackerAckState::TACK_NOCONNECTION;
TrackerAckTime = timer_query();
udp_tracker_register();
}
#endif
GetPlayersAgain:
j = newmenu_do1(nullptr, title, spd.m.size(), spd.m.data(), net_udp_start_poll, &spd, 1);
save_nplayers = N_players;
if (j<0)
{
// Aborted!
// Dump all players and go back to menu mode
abort:
// Tell everyone we're bailing
Netgame.numplayers = 0;
for (unsigned i = 1; i < save_nplayers; ++i)
{
if (vcplayerptr(i)->connected == CONNECT_DISCONNECTED)
continue;
const auto &addr = Netgame.players[i].protocol.udp.addr;
net_udp_dump_player(addr, DUMP_ABORTED);
net_udp_send_game_info(addr, &addr, UPID_GAME_INFO);
}
net_udp_broadcast_game_info(UPID_GAME_INFO_LITE);
Netgame.numplayers = save_nplayers;
Network_status = NETSTAT_MENU;
#if DXX_USE_TRACKER
if( Netgame.Tracker )
udp_tracker_unregister();
#endif
return(0);
}
// Count number of players chosen
N_players = 0;
range_for (auto &i, partial_const_range(spd.m, save_nplayers))
{
if (i.value)
N_players++;
}
if ( N_players > Netgame.max_numplayers) {
nm_messagebox( TXT_ERROR, 1, TXT_OK, "%s %d %s", TXT_SORRY_ONLY, Netgame.max_numplayers, TXT_NETPLAYERS_IN );
N_players = save_nplayers;
goto GetPlayersAgain;
}
// Let host join without Client available. Let's see if our players like that
#if 0 //def RELEASE
if ( N_players < 2 ) {
nm_messagebox( TXT_ERROR, 1, TXT_OK, TXT_TEAM_ATLEAST_TWO );
N_players = save_nplayers;
goto GetPlayersAgain;
}
#endif
#if 0 //def RELEASE
if ( (Netgame.gamemode == NETGAME_TEAM_ANARCHY || Netgame.gamemode == NETGAME_CAPTURE_FLAG || Netgame.gamemode == NETGAME_TEAM_HOARD) && (N_players < 2) )
{
nm_messagebox(TXT_ERROR, 1, TXT_OK, "You must select at least two\nplayers to start a team game" );
N_players = save_nplayers;
goto GetPlayersAgain;
}
#endif
// Remove players that aren't marked.
N_players = 0;
for (int i=0; i N_players)
{
Netgame.players[N_players].callsign = Netgame.players[i].callsign;
Netgame.players[N_players].rank=Netgame.players[i].rank;
ClipRank (&Netgame.players[N_players].rank);
}
vmplayerptr(N_players)->connected = CONNECT_PLAYING;
N_players++;
}
else
{
net_udp_dump_player(Netgame.players[i].protocol.udp.addr, DUMP_DORK);
}
}
range_for (auto &i, partial_range(Netgame.players, N_players, Netgame.players.size()))
{
i.callsign = {};
i.rank=0;
}
#if defined(DXX_BUILD_DESCENT_I)
if (Netgame.gamemode == NETGAME_TEAM_ANARCHY)
#elif defined(DXX_BUILD_DESCENT_II)
if (Netgame.gamemode == NETGAME_TEAM_ANARCHY ||
Netgame.gamemode == NETGAME_CAPTURE_FLAG ||
Netgame.gamemode == NETGAME_TEAM_HOARD)
#endif
if (!net_udp_select_teams())
goto abort;
return(1);
}
}
static int net_udp_start_game(void)
{
int i;
i = udp_open_socket(UDP_Socket[0], UDP_MyPort);
if (i != 0)
return 0;
if (UDP_MyPort != UDP_PORT_DEFAULT)
i = udp_open_socket(UDP_Socket[1], UDP_PORT_DEFAULT); // Default port open for Broadcasts
if (i != 0)
return 0;
// prepare broadcast address to announce our game
udp_init_broadcast_addresses();
d_srand(static_cast(timer_query()));
Netgame.protocol.udp.GameID=d_rand();
N_players = 0;
Netgame.game_status = NETSTAT_STARTING;
Netgame.numplayers = 0;
Network_status = NETSTAT_STARTING;
net_udp_set_game_mode(Netgame.gamemode);
Netgame.protocol.udp.your_index = 0; // I am Host. I need to know that y'know? For syncing later.
if (!net_udp_select_players()
|| StartNewLevel(Netgame.levelnum) == window_event_result::close)
{
Game_mode = GM_GAME_OVER;
return 0; // see if we want to tweak the game we setup
}
net_udp_broadcast_game_info(UPID_GAME_INFO_LITE); // game started. broadcast our current status to everyone who wants to know
return 1; // don't keep params menu or mission listbox (may want to join a game next time)
}
static int net_udp_wait_for_sync(void)
{
char text[60];
int choice=0;
Network_status = NETSTAT_WAITING;
array m{{
nm_item_text(text),
nm_item_text(TXT_NET_LEAVE),
}};
auto i = net_udp_send_request();
if (i >= MAX_PLAYERS)
return(-1);
snprintf(text, sizeof(text), "%s\n'%s' %s", TXT_NET_WAITING, static_cast(Netgame.players[i].callsign), TXT_NET_TO_ENTER );
while (choice > -1)
{
timer_update();
choice=newmenu_do( NULL, TXT_WAIT, m, net_udp_sync_poll, unused_newmenu_userdata );
}
if (Network_status != NETSTAT_PLAYING)
{
UDP_sequence_packet me{};
me.type = UPID_QUIT_JOINING;
me.player.callsign = get_local_player().callsign;
net_udp_send_sequence_packet(me, Netgame.players[0].protocol.udp.addr);
N_players = 0;
Game_mode = GM_GAME_OVER;
return(-1); // they cancelled
}
return(0);
}
static int net_udp_request_poll( newmenu *,const d_event &event, const unused_newmenu_userdata_t *)
{
// Polling loop for waiting-for-requests menu
int num_ready = 0;
if (event.type != EVENT_WINDOW_DRAW)
return 0;
net_udp_listen();
net_udp_timeout_check(timer_query());
range_for (auto &i, partial_const_range(Players, N_players))
{
if ((i.connected == CONNECT_PLAYING) || (i.connected == CONNECT_DISCONNECTED))
num_ready++;
}
if (num_ready == N_players) // All players have checked in or are disconnected
{
return -2;
}
return 0;
}
static int net_udp_wait_for_requests(void)
{
// Wait for other players to load the level before we send the sync
int choice;
array m{{
nm_item_text(TXT_NET_LEAVE),
}};
Network_status = NETSTAT_WAITING;
net_udp_flush();
get_local_player().connected = CONNECT_PLAYING;
menu:
choice = newmenu_do(NULL, TXT_WAIT, m, net_udp_request_poll, unused_newmenu_userdata);
if (choice == -1)
{
// User aborted
choice = nm_messagebox(NULL, 3, TXT_YES, TXT_NO, TXT_START_NOWAIT, TXT_QUITTING_NOW);
if (choice == 2) {
N_players = 1;
return 0;
}
if (choice != 0)
goto menu;
// User confirmed abort
for (unsigned i = 0; i < N_players; ++i)
{
if (vcplayerptr(i)->connected != CONNECT_DISCONNECTED && i != Player_num)
{
net_udp_dump_player(Netgame.players[i].protocol.udp.addr, DUMP_ABORTED);
}
}
return -1;
}
else if (choice != -2)
goto menu;
return 0;
}
/* Do required syncing after each level, before starting new one */
window_event_result net_udp_level_sync()
{
int result = 0;
UDP_MData = {};
net_udp_noloss_init_mdata_queue();
net_udp_flush(); // Flush any old packets
if (N_players == 0)
result = net_udp_wait_for_sync();
else if (multi_i_am_master())
{
result = net_udp_wait_for_requests();
if (!result)
result = net_udp_send_sync();
}
else
result = net_udp_wait_for_sync();
if (result)
{
get_local_player().connected = CONNECT_DISCONNECTED;
net_udp_send_endlevel_packet();
show_menus();
net_udp_close();
return window_event_result::close;
}
return window_event_result::handled;
}
namespace dsx {
int net_udp_do_join_game()
{
if (Netgame.game_status == NETSTAT_ENDLEVEL)
{
nm_messagebox(TXT_SORRY, 1, TXT_OK, TXT_NET_GAME_BETWEEN2);
return 0;
}
// Check for valid mission name
if (!load_mission_by_name(Netgame.mission_name))
{
nm_messagebox(NULL, 1, TXT_OK, TXT_MISSION_NOT_FOUND);
return 0;
}
#if defined(DXX_BUILD_DESCENT_II)
if (is_D2_OEM)
{
if (Netgame.levelnum>8)
{
nm_messagebox(NULL, 1, TXT_OK, "This OEM version only supports\nthe first 8 levels!");
return 0;
}
}
if (is_MAC_SHARE)
{
if (Netgame.levelnum > 4)
{
nm_messagebox(NULL, 1, TXT_OK, "This SHAREWARE version only supports\nthe first 4 levels!");
return 0;
}
}
if ( !HoardEquipped() && (Netgame.gamemode == NETGAME_HOARD || Netgame.gamemode == NETGAME_TEAM_HOARD) )
{
nm_messagebox(TXT_SORRY, 1, TXT_OK, "HOARD(.ham) not installed. You can't join.");
return 0;
}
Network_status = NETSTAT_BROWSING; // We are looking at a game menu
#endif
if (!net_udp_can_join_netgame(&Netgame))
{
nm_messagebox(TXT_SORRY, 1, TXT_OK, Netgame.numplayers == Netgame.max_numplayers ? TXT_GAME_FULL : TXT_IN_PROGRESS);
return 0;
}
// Choice is valid, prepare to join in
Difficulty_level = Netgame.difficulty;
change_playernum_to(1);
net_udp_set_game_mode(Netgame.gamemode);
return StartNewLevel(Netgame.levelnum) == window_event_result::handled; // look ma, we're in a game!!! (If level syncing didn't fail -kreatordxx)
}
}
namespace dsx {
void net_udp_leave_game()
{
int nsave;
net_udp_do_frame(1, 1);
if (multi_i_am_master())
{
while (Network_sending_extras>1 && Player_joining_extras!=-1)
{
timer_update();
net_udp_send_extras();
}
Netgame.numplayers = 0;
nsave=N_players;
N_players=0;
for (unsigned i = 1; i < nsave; ++i)
{
if (vcplayerptr(i)->connected == CONNECT_DISCONNECTED)
continue;
const auto &addr = Netgame.players[i].protocol.udp.addr;
net_udp_send_game_info(addr, &addr, UPID_GAME_INFO);
}
net_udp_broadcast_game_info(UPID_GAME_INFO_LITE);
N_players=nsave;
#if DXX_USE_TRACKER
if( Netgame.Tracker )
udp_tracker_unregister();
#endif
}
get_local_player().connected = CONNECT_DISCONNECTED;
change_playernum_to(0);
#if defined(DXX_BUILD_DESCENT_II)
write_player_file();
#endif
net_udp_flush();
net_udp_close();
}
}
static void net_udp_flush(RAIIsocket &s)
{
if (!s)
return;
unsigned i = 0;
struct _sockaddr sender_addr;
std::array packet;
while (udp_receive_packet(s, packet.data(), packet.size(), &sender_addr) > 0)
++i;
if (i)
con_printf(CON_VERBOSE, "Flushed %u UDP packets from socket %i", i, static_cast(s));
}
void net_udp_flush()
{
range_for (auto &s, UDP_Socket)
net_udp_flush(s);
}
static void net_udp_listen(RAIIsocket &sock)
{
if (!sock)
return;
struct _sockaddr sender_addr;
std::array packet;
for (;;)
{
const int size = udp_receive_packet(sock, packet.data(), packet.size(), &sender_addr);
if (!(size > 0))
break;
net_udp_process_packet(packet.data(), sender_addr, size);
}
}
void net_udp_listen()
{
range_for (auto &s, UDP_Socket)
net_udp_listen(s);
}
void net_udp_send_data(const uint8_t *const ptr, const unsigned len, const int priority)
{
#if DXX_HAVE_POISON_VALGRIND
VALGRIND_CHECK_MEM_IS_DEFINED(ptr, len);
#endif
char check;
if ((UDP_MData.mbuf_size+len) > UPID_MDATA_BUF_SIZE )
{
check = ptr[0];
net_udp_send_mdata(0, timer_query());
if (UDP_MData.mbuf_size != 0)
Int3();
Assert(check == ptr[0]);
(void)check;
}
Assert(UDP_MData.mbuf_size+len <= UPID_MDATA_BUF_SIZE);
memcpy( &UDP_MData.mbuf[UDP_MData.mbuf_size], ptr, len );
UDP_MData.mbuf_size += len;
if (priority)
net_udp_send_mdata((priority==2)?1:0, timer_query());
}
void net_udp_timeout_check(fix64 time)
{
static fix64 last_timeout_time = 0;
if (time>=last_timeout_time+F1_0)
{
// Check for player timeouts
for (playernum_t i = 0; i < N_players; i++)
{
if ((i != Player_num) && (vcplayerptr(i)->connected != CONNECT_DISCONNECTED))
{
if ((Netgame.players[i].LastPacketTime == 0) || (Netgame.players[i].LastPacketTime > time))
{
Netgame.players[i].LastPacketTime = time;
}
else if ((time - Netgame.players[i].LastPacketTime) > UDP_TIMEOUT)
{
multi_disconnect_player(i);
}
}
}
last_timeout_time = time;
}
}
namespace dsx {
void net_udp_do_frame(int force, int listen)
{
static fix64 last_pdata_time = 0, last_mdata_time = 16, last_endlevel_time = 32, last_bcast_time = 48, last_resync_time = 64;
if (!(Game_mode&GM_NETWORK) || !UDP_Socket[0])
return;
const fix64 time = timer_update();
if (WaitForRefuseAnswer && time>(RefuseTimeLimit+(F1_0*12)))
WaitForRefuseAnswer=0;
// Send positional update either in the regular PPS interval OR if forced
if (force || (time >= (last_pdata_time+(F1_0/Netgame.PacketsPerSec))))
{
last_pdata_time = time;
net_udp_send_pdata();
#if defined(DXX_BUILD_DESCENT_II)
multi_send_thief_frame();
#endif
}
if (force || (time >= (last_mdata_time+(F1_0/10))))
{
last_mdata_time = time;
multi_send_robot_frame(0);
net_udp_send_mdata(0, time);
}
net_udp_noloss_process_queue(time);
if (VerifyPlayerJoined!=-1 && time >= last_resync_time+F1_0)
{
last_resync_time = time;
net_udp_resend_sync_due_to_packet_loss(); // This will resend to UDP_sync_player
}
if ((time>=last_endlevel_time+F1_0) && Control_center_destroyed)
{
last_endlevel_time = time;
net_udp_send_endlevel_packet();
}
// broadcast lite_info every 10 seconds
if (multi_i_am_master() && time>=last_bcast_time+(F1_0*10))
{
last_bcast_time = time;
net_udp_broadcast_game_info(UPID_GAME_INFO_LITE);
#if DXX_USE_TRACKER
if ( Netgame.Tracker )
udp_tracker_register();
#endif
}
net_udp_ping_frame(time);
#if DXX_USE_TRACKER
udp_tracker_verify_ack_timeout();
#endif
if (listen)
{
net_udp_timeout_check(time);
net_udp_listen();
if (Network_send_objects)
net_udp_send_objects();
if (Network_sending_extras && VerifyPlayerJoined==-1)
net_udp_send_extras();
}
udp_traffic_stat();
}
}
/* CODE FOR PACKET LOSS PREVENTION - START */
/* This code tries to make sure that packets with opcode UPID_MDATA_PNEEDACK aren't lost and sent and received in order. */
/*
* Adds a packet to our queue. Should be called when an IMPORTANT mdata packet is created.
* player_ack is an array which should contain 0 for each player that needs to send an ACK signal.
*/
static void net_udp_noloss_add_queue_pkt(fix64 time, const ubyte *data, ushort data_size, ubyte pnum, ubyte player_ack[MAX_PLAYERS])
{
if (!(Game_mode&GM_NETWORK) || !UDP_Socket[0])
return;
if (!Netgame.PacketLossPrevention)
return;
if (UDP_mdata_queue_highest == UDP_MDATA_STOR_QUEUE_SIZE) // The list is full. That should not happen. But if it does, we must do something.
{
con_printf(CON_VERBOSE, "P#%u: MData store list is full!", Player_num);
if (multi_i_am_master()) // I am host. I will kick everyone who did not ACK the first packet and then remove it.
{
for ( int i=1; iconnected == CONNECT_DISCONNECTED) // if player me, is not playing or does not require an ACK, do not add timestamp or increment pkt_num
continue;
UDP_mdata_queue[UDP_mdata_queue_highest].pkt_timestamp[i] = time;
UDP_mdata_queue[UDP_mdata_queue_highest].pkt_num[i] = UDP_mdata_trace[i].pkt_num_tosend;
UDP_mdata_trace[i].pkt_num_tosend++;
if (UDP_mdata_trace[i].pkt_num_tosend > UDP_MDATA_PKT_NUM_MAX)
UDP_mdata_trace[i].pkt_num_tosend = UDP_MDATA_PKT_NUM_MIN;
}
UDP_mdata_queue[UDP_mdata_queue_highest].Player_num = pnum;
memcpy( &UDP_mdata_queue[UDP_mdata_queue_highest].player_ack, player_ack, sizeof(ubyte)*MAX_PLAYERS);
memcpy( &UDP_mdata_queue[UDP_mdata_queue_highest].data, data, sizeof(char)*data_size );
UDP_mdata_queue[UDP_mdata_queue_highest].data_size = data_size;
UDP_mdata_queue_highest++;
}
/*
* We have received a MDATA packet. Send ACK response to sender!
* Make sure this packet has the expected packet number so we get them all in order. If not, reject it and await further packets.
* Also check in our UDP_mdata_trace list, if we got this packet already. If yes, return 0 so do not process it!
*/
static int net_udp_noloss_validate_mdata(uint32_t pkt_num, ubyte sender_pnum, const _sockaddr &sender_addr)
{
ubyte pkt_sender_pnum = sender_pnum;
int len = 0;
// If we are a client, we get all our packets from the host.
if (!multi_i_am_master())
sender_pnum = 0;
// Check if this comes from a valid IP
if (sender_addr != Netgame.players[sender_pnum].protocol.udp.addr)
return 0;
// Prepare the ACK (but do not send, yet)
array buf;
buf[len] = UPID_MDATA_ACK; len++;
buf[len] = Player_num; len++;
buf[len] = pkt_sender_pnum; len++;
PUT_INTEL_INT(&buf[len], pkt_num); len += 4;
// Make sure this is the packet we are expecting!
if (UDP_mdata_trace[sender_pnum].pkt_num_torecv != pkt_num)
{
range_for (auto &i, partial_const_range(UDP_mdata_trace[sender_pnum].pkt_num, static_cast(UDP_MDATA_STOR_QUEUE_SIZE)))
{
if (pkt_num == i) // We got this packet already - need to REsend ACK
{
con_printf(CON_VERBOSE, "P#%u: Resending MData ACK for pkt %i we already got by pnum %i",Player_num, pkt_num, sender_pnum);
dxx_sendto(sender_addr, UDP_Socket[0], buf, 0);
return 0;
}
}
con_printf(CON_VERBOSE, "P#%u: Rejecting MData pkt %i - expected %i by pnum %i",Player_num, pkt_num, UDP_mdata_trace[sender_pnum].pkt_num_torecv, sender_pnum);
return 0; // Not the right packet and we haven't gotten it, yet either. So bail out and wait for the right one.
}
con_printf(CON_VERBOSE, "P#%u: Sending MData ACK for pkt %i by pnum %i",Player_num, pkt_num, sender_pnum);
dxx_sendto(sender_addr, UDP_Socket[0], buf, 0);
UDP_mdata_trace[sender_pnum].cur_slot++;
if (UDP_mdata_trace[sender_pnum].cur_slot >= UDP_MDATA_STOR_QUEUE_SIZE)
UDP_mdata_trace[sender_pnum].cur_slot = 0;
UDP_mdata_trace[sender_pnum].pkt_num[UDP_mdata_trace[sender_pnum].cur_slot] = pkt_num;
UDP_mdata_trace[sender_pnum].pkt_num_torecv++;
if (UDP_mdata_trace[sender_pnum].pkt_num_torecv > UDP_MDATA_PKT_NUM_MAX)
UDP_mdata_trace[sender_pnum].pkt_num_torecv = UDP_MDATA_PKT_NUM_MIN;
return 1;
}
/* We got an ACK by a player. Set this player slot to positive! */
void net_udp_noloss_got_ack(const uint8_t *data, uint_fast32_t data_len)
{
int len = 0;
uint32_t pkt_num = 0;
ubyte sender_pnum = 0, dest_pnum = 0;
if (data_len != 7)
return;
len++;
sender_pnum = data[len]; len++;
dest_pnum = data[len]; len++;
pkt_num = GET_INTEL_INT(&data[len]); len += 4;
for (int i = 0; i < UDP_mdata_queue_highest; i++)
{
if ((pkt_num == UDP_mdata_queue[i].pkt_num[sender_pnum]) && (dest_pnum == UDP_mdata_queue[i].Player_num))
{
con_printf(CON_VERBOSE, "P#%u: Got MData ACK for pkt_num %i from pnum %i for pnum %i",Player_num, pkt_num, sender_pnum, dest_pnum);
UDP_mdata_queue[i].player_ack[sender_pnum] = 1;
break;
}
}
}
/* Init/Free the queue. Call at start and end of a game or level. */
void net_udp_noloss_init_mdata_queue(void)
{
UDP_mdata_queue_highest=0;
con_printf(CON_VERBOSE, "P#%u: Clearing MData store/trace list",Player_num);
UDP_mdata_queue = {};
for (int i = 0; i < MAX_PLAYERS; i++)
net_udp_noloss_clear_mdata_trace(i);
}
/* Reset the trace list for given player when (dis)connect happens */
void net_udp_noloss_clear_mdata_trace(ubyte player_num)
{
con_printf(CON_VERBOSE, "P#%u: Clearing trace list for %i",Player_num, player_num);
UDP_mdata_trace[player_num].pkt_num = {};
UDP_mdata_trace[player_num].cur_slot = 0;
UDP_mdata_trace[player_num].pkt_num_torecv = UDP_MDATA_PKT_NUM_MIN;
UDP_mdata_trace[player_num].pkt_num_tosend = UDP_MDATA_PKT_NUM_MIN;
}
/*
* The main queue-process function.
* Check if we can remove a packet from queue, and check if there are packets in queue which we need to re-send
*/
void net_udp_noloss_process_queue(fix64 time)
{
int total_len = 0;
if (!(Game_mode&GM_NETWORK) || !UDP_Socket[0])
return;
if (!Netgame.PacketLossPrevention)
return;
for (int queuec = 0; queuec < UDP_mdata_queue_highest; queuec++)
{
int needack = 0;
// This might happen if we get out ACK's in the wrong order. So ignore that packet for now. It'll resolve itself.
if (!UDP_mdata_queue[queuec].used)
continue;
// Check if at least one connected player has not ACK'd the packet
for (unsigned plc = 0; plc < MAX_PLAYERS; ++plc)
{
// If player is not playing anymore, we can remove him from list. Also remove *me* (even if that should have been done already). Also make sure Clients do not send to anyone else than Host
if ((vcplayerptr(plc)->connected != CONNECT_PLAYING || plc == Player_num) || (!multi_i_am_master() && plc > 0))
UDP_mdata_queue[queuec].player_ack[plc] = 1;
if (!UDP_mdata_queue[queuec].player_ack[plc])
{
// Resend if enough time has passed.
if (UDP_mdata_queue[queuec].pkt_timestamp[plc] + (F1_0/4) <= time)
{
ubyte buf[sizeof(UDP_mdata_info)];
int len = 0;
con_printf(CON_VERBOSE, "P#%u: Resending pkt_num %i from pnum %i to pnum %i",Player_num, UDP_mdata_queue[queuec].pkt_num[plc], UDP_mdata_queue[queuec].Player_num, plc);
UDP_mdata_queue[queuec].pkt_timestamp[plc] = time;
memset(&buf, 0, sizeof(UDP_mdata_info));
// Prepare the packet and send it
buf[len] = UPID_MDATA_PNEEDACK; len++;
buf[len] = UDP_mdata_queue[queuec].Player_num; len++;
PUT_INTEL_INT(buf + len, UDP_mdata_queue[queuec].pkt_num[plc]); len += 4;
memcpy(&buf[len], UDP_mdata_queue[queuec].data.data(), sizeof(char)*UDP_mdata_queue[queuec].data_size);
len += UDP_mdata_queue[queuec].data_size;
dxx_sendto(Netgame.players[plc].protocol.udp.addr, UDP_Socket[0], buf, len, 0);
total_len += len;
}
needack++;
}
}
// Check if we can remove that packet due to to it had no resend's or Timeout
if (needack==0 || (UDP_mdata_queue[queuec].pkt_initial_timestamp + UDP_TIMEOUT <= time))
{
if (needack) // packet timed out but still not all have ack'd.
{
if (multi_i_am_master()) // We are host, so we kick the remaining players.
{
for ( int plc=1; plc= (UPID_MAX_SIZE/2))
break;
}
// Now that we are done processing the queue, actually remove all unused packets from the top of the list.
while (!UDP_mdata_queue[0].used && UDP_mdata_queue_highest > 0)
{
std::move(std::next(UDP_mdata_queue.begin()), UDP_mdata_queue.end(), UDP_mdata_queue.begin());
UDP_mdata_queue[UDP_MDATA_STOR_QUEUE_SIZE - 1] = {};
UDP_mdata_queue_highest--;
}
}
/* CODE FOR PACKET LOSS PREVENTION - END */
void net_udp_send_mdata_direct(const ubyte *data, int data_len, int pnum, int needack)
{
ubyte buf[sizeof(UDP_mdata_info)];
ubyte pack[MAX_PLAYERS];
int len = 0;
if (!(Game_mode&GM_NETWORK) || !UDP_Socket[0])
return;
if (!(data_len > 0))
return;
if (!multi_i_am_master() && pnum != 0)
Error("Client sent direct data to non-Host in net_udp_send_mdata_direct()!\n");
if (!Netgame.PacketLossPrevention)
needack = 0;
memset(&buf, 0, sizeof(UDP_mdata_info));
memset(&pack, 1, sizeof(ubyte)*MAX_PLAYERS);
pack[pnum] = 0;
if (needack)
buf[len] = UPID_MDATA_PNEEDACK;
else
buf[len] = UPID_MDATA_PNORM;
len++;
buf[len] = Player_num; len++;
if (needack)
{
PUT_INTEL_INT(buf + len, UDP_mdata_trace[pnum].pkt_num_tosend); len += 4;
}
memcpy(&buf[len], data, sizeof(char)*data_len); len += data_len;
dxx_sendto(Netgame.players[pnum].protocol.udp.addr, UDP_Socket[0], buf, len, 0);
if (needack)
net_udp_noloss_add_queue_pkt(timer_query(), data, data_len, Player_num, pack);
}
void net_udp_send_mdata(int needack, fix64 time)
{
ubyte buf[sizeof(UDP_mdata_info)];
ubyte pack[MAX_PLAYERS];
int len = 0;
if (!(Game_mode&GM_NETWORK) || !UDP_Socket[0])
return;
if (!(UDP_MData.mbuf_size > 0))
return;
if (!Netgame.PacketLossPrevention)
needack = 0;
memset(&buf, 0, sizeof(UDP_mdata_info));
memset(&pack, 1, sizeof(ubyte)*MAX_PLAYERS);
if (needack)
buf[len] = UPID_MDATA_PNEEDACK;
else
buf[len] = UPID_MDATA_PNORM;
len++;
buf[len] = Player_num; len++;
if (needack) len += 4; // we place the pkt_num later since it changes per player
memcpy(&buf[len], UDP_MData.mbuf.data(), sizeof(char)*UDP_MData.mbuf_size);
len += UDP_MData.mbuf_size;
if (multi_i_am_master())
{
for (unsigned i = 1; i < MAX_PLAYERS; ++i)
{
if (vcplayerptr(i)->connected == CONNECT_PLAYING)
{
if (needack) // assign pkt_num
PUT_INTEL_INT(buf + 2, UDP_mdata_trace[i].pkt_num_tosend);
dxx_sendto(Netgame.players[i].protocol.udp.addr, UDP_Socket[0], buf, len, 0);
pack[i] = 0;
}
}
}
else
{
if (needack) // assign pkt_num
PUT_INTEL_INT(buf + 2, UDP_mdata_trace[0].pkt_num_tosend);
dxx_sendto(Netgame.players[0].protocol.udp.addr, UDP_Socket[0], buf, len, 0);
pack[0] = 0;
}
if (needack)
net_udp_noloss_add_queue_pkt(time, UDP_MData.mbuf.data(), UDP_MData.mbuf_size, Player_num, pack);
// Clear UDP_MData except pkt_num. That one must not be deleted so we can clearly keep track of important packets.
UDP_MData.type = 0;
UDP_MData.Player_num = 0;
UDP_MData.mbuf_size = 0;
UDP_MData.mbuf = {};
}
void net_udp_process_mdata(uint8_t *data, uint_fast32_t data_len, const _sockaddr &sender_addr, int needack)
{
int pnum = data[1], dataoffset = (needack?6:2);
// Check if packet might be bogus
if ((pnum < 0) || (data_len > sizeof(UDP_mdata_info)))
return;
// Check if it came from valid IP
if (multi_i_am_master())
{
if (sender_addr != Netgame.players[pnum].protocol.udp.addr)
{
return;
}
}
else
{
if (sender_addr != Netgame.players[0].protocol.udp.addr)
{
return;
}
}
// Add needack packet and check for possible redundancy
if (needack)
{
if (!net_udp_noloss_validate_mdata(GET_INTEL_INT(&data[2]), pnum, sender_addr))
return;
}
// send this to everyone else (if master)
if (multi_i_am_master())
{
ubyte pack[MAX_PLAYERS];
memset(&pack, 1, sizeof(ubyte)*MAX_PLAYERS);
for (unsigned i = 1; i < MAX_PLAYERS; ++i)
{
if (i != pnum && vcplayerptr(i)->connected == CONNECT_PLAYING)
{
if (needack)
{
pack[i] = 0;
PUT_INTEL_INT(data + 2, UDP_mdata_trace[i].pkt_num_tosend);
}
dxx_sendto(Netgame.players[i].protocol.udp.addr, UDP_Socket[0], data, data_len, 0);
}
}
if (needack)
{
net_udp_noloss_add_queue_pkt(timer_query(), data+dataoffset, data_len-dataoffset, pnum, pack);
}
}
// Check if we are in correct state to process the packet
if (!((Network_status == NETSTAT_PLAYING)||(Network_status == NETSTAT_ENDLEVEL) || Network_status==NETSTAT_WAITING))
return;
// Process
multi_process_bigdata(pnum, data+dataoffset, data_len-dataoffset );
}
void net_udp_send_pdata()
{
array buf;
int len = 0;
if (!(Game_mode&GM_NETWORK) || !UDP_Socket[0])
return;
auto &plr = get_local_player();
if (plr.connected != CONNECT_PLAYING)
return;
if ( !( Network_status == NETSTAT_PLAYING || Network_status == NETSTAT_ENDLEVEL ) )
return;
buf[len] = UPID_PDATA; len++;
buf[len] = Player_num; len++;
buf[len] = plr.connected; len++;
quaternionpos qpp{};
create_quaternionpos(&qpp, vmobjptr(plr.objnum), 0);
PUT_INTEL_SHORT(&buf[len], qpp.orient.w); len += 2;
PUT_INTEL_SHORT(&buf[len], qpp.orient.x); len += 2;
PUT_INTEL_SHORT(&buf[len], qpp.orient.y); len += 2;
PUT_INTEL_SHORT(&buf[len], qpp.orient.z); len += 2;
PUT_INTEL_INT(&buf[len], qpp.pos.x); len += 4;
PUT_INTEL_INT(&buf[len], qpp.pos.y); len += 4;
PUT_INTEL_INT(&buf[len], qpp.pos.z); len += 4;
PUT_INTEL_SHORT(&buf[len], qpp.segment); len += 2;
PUT_INTEL_INT(&buf[len], qpp.vel.x); len += 4;
PUT_INTEL_INT(&buf[len], qpp.vel.y); len += 4;
PUT_INTEL_INT(&buf[len], qpp.vel.z); len += 4;
PUT_INTEL_INT(&buf[len], qpp.rotvel.x); len += 4;
PUT_INTEL_INT(&buf[len], qpp.rotvel.y); len += 4;
PUT_INTEL_INT(&buf[len], qpp.rotvel.z); len += 4; // 46 + 3 = 49
if (multi_i_am_master())
{
for (unsigned i = 1; i < MAX_PLAYERS; ++i)
if (vcplayerptr(i)->connected != CONNECT_DISCONNECTED)
dxx_sendto(Netgame.players[i].protocol.udp.addr, UDP_Socket[0], buf, 0);
}
else
{
dxx_sendto(Netgame.players[0].protocol.udp.addr, UDP_Socket[0], buf, 0);
}
}
void net_udp_process_pdata(const uint8_t *data, uint_fast32_t data_len, const _sockaddr &sender_addr)
{
UDP_frame_info pd;
int len = 0;
if ( !( Game_mode & GM_NETWORK && ( Network_status == NETSTAT_PLAYING || Network_status == NETSTAT_ENDLEVEL ) ) )
return;
len++;
pd = {};
if (data_len > sizeof(UDP_frame_info))
return;
if (data_len != UPID_PDATA_SIZE)
return;
if (sender_addr != Netgame.players[((multi_i_am_master())?(data[len]):(0))].protocol.udp.addr)
return;
pd.Player_num = data[len]; len++;
pd.connected = data[len]; len++;
pd.qpp.orient.w = GET_INTEL_SHORT(&data[len]); len += 2;
pd.qpp.orient.x = GET_INTEL_SHORT(&data[len]); len += 2;
pd.qpp.orient.y = GET_INTEL_SHORT(&data[len]); len += 2;
pd.qpp.orient.z = GET_INTEL_SHORT(&data[len]); len += 2;
pd.qpp.pos.x = GET_INTEL_INT(&data[len]); len += 4;
pd.qpp.pos.y = GET_INTEL_INT(&data[len]); len += 4;
pd.qpp.pos.z = GET_INTEL_INT(&data[len]); len += 4;
pd.qpp.segment = GET_INTEL_SHORT(&data[len]); len += 2;
pd.qpp.vel.x = GET_INTEL_INT(&data[len]); len += 4;
pd.qpp.vel.y = GET_INTEL_INT(&data[len]); len += 4;
pd.qpp.vel.z = GET_INTEL_INT(&data[len]); len += 4;
pd.qpp.rotvel.x = GET_INTEL_INT(&data[len]); len += 4;
pd.qpp.rotvel.y = GET_INTEL_INT(&data[len]); len += 4;
pd.qpp.rotvel.z = GET_INTEL_INT(&data[len]); len += 4;
if (multi_i_am_master()) // I am host - must relay this packet to others!
{
const unsigned ppn = pd.Player_num;
if (ppn > 0 && ppn <= N_players && vcplayerptr(ppn)->connected == CONNECT_PLAYING) // some checking whether this packet is legal
{
for (unsigned i = 1; i < MAX_PLAYERS; ++i)
{
// not to sender or disconnected/waiting players - right.
if (i == ppn)
continue;
auto &iplr = *vcplayerptr(i);
if (iplr.connected != CONNECT_DISCONNECTED && iplr.connected != CONNECT_WAITING)
dxx_sendto(Netgame.players[i].protocol.udp.addr, UDP_Socket[0], data, data_len, 0);
}
}
}
net_udp_read_pdata_packet (&pd);
}
void net_udp_read_pdata_packet(UDP_frame_info *pd)
{
const unsigned TheirPlayernum = pd->Player_num;
auto &tplr = *vmplayerptr(TheirPlayernum);
const auto TheirObjnum = tplr.objnum;
if (multi_i_am_master())
{
// latecoming player seems to successfully have synced
if ( VerifyPlayerJoined != -1 && TheirPlayernum == VerifyPlayerJoined )
VerifyPlayerJoined=-1;
// we say that guy is disconnected so we do not want him/her in game
if (tplr.connected == CONNECT_DISCONNECTED )
return;
}
else
{
// only by reading pdata a client can know if a player reconnected. So do that here.
// NOTE: we might do this somewhere else - maybe with a sync packet like when adding a fresh player.
if (tplr.connected == CONNECT_DISCONNECTED && pd->connected == CONNECT_PLAYING )
{
tplr.connected = CONNECT_PLAYING;
if (Newdemo_state == ND_STATE_RECORDING)
newdemo_record_multi_reconnect(TheirPlayernum);
digi_play_sample( SOUND_HUD_MESSAGE, F1_0);
ClipRank (&Netgame.players[TheirPlayernum].rank);
const auto &&rankstr = GetRankStringWithSpace(Netgame.players[TheirPlayernum].rank);
HUD_init_message(HM_MULTI, "%s%s'%s' %s", rankstr.first, rankstr.second, static_cast(vcplayerptr(TheirPlayernum)->callsign), TXT_REJOIN);
multi_send_score();
net_udp_noloss_clear_mdata_trace(TheirPlayernum);
}
}
if (vcplayerptr(TheirPlayernum)->connected != CONNECT_PLAYING || TheirPlayernum == Player_num)
return;
if (!multi_quit_game && (TheirPlayernum >= N_players))
{
if (Network_status!=NETSTAT_WAITING)
{
Int3(); // We missed an important packet!
multi_consistency_error(0);
return;
}
else
return;
}
const auto TheirObj = vmobjptridx(TheirObjnum);
Netgame.players[TheirPlayernum].LastPacketTime = timer_query();
// do not read the packet unless the level is loaded.
if (vcplayerptr(Player_num)->connected == CONNECT_DISCONNECTED || vcplayerptr(Player_num)->connected == CONNECT_WAITING)
return;
//------------ Read the player's ship's object info ----------------------
extract_quaternionpos(TheirObj, &pd->qpp, 0);
if (TheirObj->movement_type == MT_PHYSICS)
set_thrust_from_velocity(TheirObj);
}
#if defined(DXX_BUILD_DESCENT_II)
static void net_udp_send_smash_lights (const playernum_t pnum)
{
// send the lights that have been blown out
range_for (const auto &&segp, vmsegptridx)
{
if (segp->light_subtracted)
multi_send_light_specific(pnum, segp, segp->light_subtracted);
}
}
static void net_udp_send_fly_thru_triggers (const playernum_t pnum)
{
// send the fly thru triggers that have been disabled
range_for (const auto &&t, vctrgptridx)
{
if (t->flags & TF_DISABLED)
multi_send_trigger_specific(pnum, t);
}
}
static void net_udp_send_player_flags()
{
for (playernum_t i=0;i buf;
int len = 0;
memset(&buf, 0, sizeof(ubyte)*UPID_PING_SIZE);
buf[len] = UPID_PING; len++;
memcpy(&buf[len], &time, 8); len += 8;
range_for (auto &i, partial_const_range(Netgame.players, 1u, MAX_PLAYERS))
{
PUT_INTEL_INT(&buf[len], i.ping); len += 4;
}
for (unsigned i = 1; i < MAX_PLAYERS; ++i)
{
if (vcplayerptr(i)->connected == CONNECT_DISCONNECTED)
continue;
dxx_sendto(Netgame.players[i].protocol.udp.addr, UDP_Socket[0], buf, 0);
}
PingTime = time;
}
}
// Got a PING from host. Apply the pings to our players and respond to host.
void net_udp_process_ping(const uint8_t *data, const _sockaddr &sender_addr)
{
fix64 host_ping_time = 0;
array buf;
int len = 0;
if (Netgame.players[0].protocol.udp.addr != sender_addr)
return;
len++; // Skip UPID byte;
memcpy(&host_ping_time, &data[len], 8); len += 8;
range_for (auto &i, partial_range(Netgame.players, 1u, MAX_PLAYERS))
{
i.ping = GET_INTEL_INT(&(data[len])); len += 4;
}
buf[0] = UPID_PONG;
buf[1] = Player_num;
memcpy(&buf[2], &host_ping_time, 8);
dxx_sendto(sender_addr, UDP_Socket[0], buf, 0);
}
// Got a PONG from a client. Check the time and add it to our players.
void net_udp_process_pong(const uint8_t *data, const _sockaddr &sender_addr)
{
const uint_fast32_t playernum = data[1];
if (playernum >= MAX_PLAYERS || playernum < 1)
return;
if (sender_addr != Netgame.players[playernum].protocol.udp.addr)
return;
fix64 client_pong_time;
memcpy(&client_pong_time, &data[2], 8);
const fix64 delta64 = timer_update() - client_pong_time;
const fix delta = static_cast(delta64);
fix result;
if (likely(delta64 == static_cast(delta)))
{
result = f2i(fixmul64(delta, i2f(1000)));
const fix lower_bound = 0;
const fix upper_bound = 9999;
if (unlikely(result < lower_bound))
result = lower_bound;
else if (unlikely(result > upper_bound))
result = upper_bound;
}
else
result = 0;
Netgame.players[playernum].ping = result;
}
namespace dsx {
void net_udp_do_refuse_stuff (UDP_sequence_packet *their)
{
int new_player_num;
ClipRank (&their->player.rank);
for (unsigned i = 0; i < MAX_PLAYERS; ++i)
{
if (!d_stricmp(vcplayerptr(i)->callsign, their->player.callsign) && their->player.protocol.udp.addr == Netgame.players[i].protocol.udp.addr)
{
net_udp_welcome_player(their);
return;
}
}
if (!WaitForRefuseAnswer)
{
for (unsigned i = 0; i < MAX_PLAYERS; ++i)
{
if (!d_stricmp(vcplayerptr(i)->callsign, their->player.callsign) && their->player.protocol.udp.addr == Netgame.players[i].protocol.udp.addr)
{
net_udp_welcome_player(their);
return;
}
}
#if defined(DXX_BUILD_DESCENT_I)
digi_play_sample (SOUND_CONTROL_CENTER_WARNING_SIREN,F1_0*2);
#elif defined(DXX_BUILD_DESCENT_II)
digi_play_sample (SOUND_HUD_JOIN_REQUEST,F1_0*2);
#endif
const auto &&rankstr = GetRankStringWithSpace(their->player.rank);
if (Game_mode & GM_TEAM)
{
HUD_init_message(HM_MULTI, "%s%s'%s' wants to join", rankstr.first, rankstr.second, static_cast(their->player.callsign));
HUD_init_message(HM_MULTI, "Alt-1 assigns to team %s. Alt-2 to team %s", static_cast(Netgame.team_name[0]), static_cast(Netgame.team_name[1]));
}
else
{
HUD_init_message(HM_MULTI, "%s%s'%s' wants to join (accept: F6)", rankstr.first, rankstr.second, static_cast(their->player.callsign));
}
strcpy (RefusePlayerName,their->player.callsign);
RefuseTimeLimit=timer_query();
RefuseThisPlayer=0;
WaitForRefuseAnswer=1;
}
else
{
for (unsigned i = 0; i < MAX_PLAYERS; ++i)
{
if (!d_stricmp(vcplayerptr(i)->callsign, their->player.callsign) && their->player.protocol.udp.addr == Netgame.players[i].protocol.udp.addr)
{
net_udp_welcome_player(their);
return;
}
}
if (strcmp(their->player.callsign,RefusePlayerName))
return;
if (RefuseThisPlayer)
{
RefuseTimeLimit=0;
RefuseThisPlayer=0;
WaitForRefuseAnswer=0;
if (Game_mode & GM_TEAM)
{
new_player_num=net_udp_get_new_player_num ();
Assert (RefuseTeam==1 || RefuseTeam==2);
if (RefuseTeam==1)
Netgame.team_vector &=(~(1< RefuseTimeLimit+REFUSE_INTERVAL)
{
RefuseTimeLimit=0;
RefuseThisPlayer=0;
WaitForRefuseAnswer=0;
if (!strcmp (their->player.callsign,RefusePlayerName))
{
net_udp_dump_player(their->player.protocol.udp.addr, DUMP_DORK);
}
return;
}
}
}
}
static int net_udp_get_new_player_num ()
{
if ( N_players < Netgame.max_numplayers)
return (N_players);
else
{
// Slots are full but game is open, see if anyone is
// disconnected and replace the oldest player with this new one
int oldest_player = -1;
fix64 oldest_time = timer_query();
Assert(N_players == Netgame.max_numplayers);
for (unsigned i = 0; i < N_players; ++i)
{
if (!vcplayerptr(i)->connected && Netgame.players[i].LastPacketTime < oldest_time)
{
oldest_time = Netgame.players[i].LastPacketTime;
oldest_player = i;
}
}
return (oldest_player);
}
}
namespace dsx {
void net_udp_send_extras ()
{
static fix64 last_send_time = 0;
if (last_send_time + (F1_0/50) > timer_query())
return;
last_send_time = timer_query();
Assert (Player_joining_extras>-1);
#if defined(DXX_BUILD_DESCENT_I)
if (Network_sending_extras==3 && (Netgame.PlayTimeAllowed || Netgame.KillGoal))
#elif defined(DXX_BUILD_DESCENT_II)
if (Network_sending_extras==9)
net_udp_send_fly_thru_triggers(Player_joining_extras);
if (Network_sending_extras==8)
net_udp_send_door_updates(Player_joining_extras);
if (Network_sending_extras==7)
multi_send_markers();
if (Network_sending_extras==6 && (Game_mode & GM_MULTI_ROBOTS))
multi_send_stolen_items();
if (Network_sending_extras==5 && (Netgame.PlayTimeAllowed || Netgame.KillGoal))
#endif
multi_send_kill_goal_counts();
#if defined(DXX_BUILD_DESCENT_II)
if (Network_sending_extras==4)
net_udp_send_smash_lights(Player_joining_extras);
if (Network_sending_extras==3)
net_udp_send_player_flags();
#endif
if (Network_sending_extras==2)
multi_send_player_inventory(1);
if (Network_sending_extras==1 && Game_mode & GM_BOUNTY)
multi_send_bounty();
Network_sending_extras--;
if (!Network_sending_extras)
Player_joining_extras=-1;
}
}
static int show_game_info_handler(newmenu *, const d_event &event, netgame_info *netgame)
{
switch (event.type)
{
case EVENT_NEWMENU_SELECTED:
{
auto &citem = static_cast(event).citem;
if (citem != 1)
return 0;
show_netgame_info(*netgame);
return 1;
}
default:
return 0;
}
}
namespace dsx {
int net_udp_show_game_info()
{
char rinfo[512];
int c;
netgame_info *netgame = &Netgame;
#if defined(DXX_BUILD_DESCENT_I)
#define DXX_SECRET_LEVEL_FORMAT "%s"
#define DXX_SECRET_LEVEL_PARAMETER (netgame->levelnum >= 0 ? "" : "S"), \
netgame->levelnum < 0 ? -netgame->levelnum : /* else portion provided by invoker */
#elif defined(DXX_BUILD_DESCENT_II)
#define DXX_SECRET_LEVEL_FORMAT
#define DXX_SECRET_LEVEL_PARAMETER
#endif
unsigned gamemode = netgame->gamemode;
unsigned players;
#if defined(DXX_BUILD_DESCENT_I)
players = netgame->numplayers;
#elif defined(DXX_BUILD_DESCENT_II)
players = netgame->numconnected;
#endif
#define GAME_INFO_FORMAT_TEXT(F) \
F("\nConnected to\n\"%s\"\n", netgame->game_name.data()) \
F("%s", netgame->mission_title.data()) \
F(" - Lvl " DXX_SECRET_LEVEL_FORMAT "%i", DXX_SECRET_LEVEL_PARAMETER netgame->levelnum) \
F("\n\nDifficulty: %s", MENU_DIFFICULTY_TEXT(netgame->difficulty)) \
F("\nGame Mode: %s", gamemode < GMNames.size() ? GMNames[gamemode] : "INVALID") \
F("\nPlayers: %u/%i", players, netgame->max_numplayers)
#define EXPAND_FORMAT(A,B,...) A
#define EXPAND_ARGUMENT(A,B,...) , B, ## __VA_ARGS__
snprintf(rinfo, lengthof(rinfo), GAME_INFO_FORMAT_TEXT(EXPAND_FORMAT) GAME_INFO_FORMAT_TEXT(EXPAND_ARGUMENT));
array nm_message_items{{
nm_item_menu("JOIN GAME"),
nm_item_menu("GAME INFO"),
}};
c = newmenu_do("WELCOME", rinfo, nm_message_items, show_game_info_handler, netgame);
if (c==0)
return 1;
//else if (c==1)
// handled in above callback
else
return 0;
}
}
/* Tracker stuff, begin! */
#if DXX_USE_TRACKER
/* Tracker initialization */
static int udp_tracker_init()
{
if (CGameArg.MplTrackerAddr.empty())
return 0;
TrackerAckStatus = TrackerAckState::TACK_NOCONNECTION;
TrackerAckTime = timer_query();
const char *tracker_addr = CGameArg.MplTrackerAddr.c_str();
// Fill the address
if (udp_dns_filladdr(TrackerSocket, tracker_addr, CGameArg.MplTrackerPort, false, true) < 0)
return -1;
// Yay
return 0;
}
/* Compares sender to tracker. Returns 1 if address matches, Returns 2 is address and port matches. */
static int sender_is_tracker(const _sockaddr &sender, const _sockaddr &tracker)
{
uint16_t sf, tf, sp, tp;
sf = sender.sin.sin_family;
tf = tracker.sin.sin_family;
#if DXX_USE_IPv6
if (sf == AF_INET6)
{
if (tf == AF_INET)
{
if (IN6_IS_ADDR_V4MAPPED(&sender.sin6.sin6_addr))
{
if (memcmp(&sender.sin6.sin6_addr.s6_addr[12], &tracker.sin.sin_addr, sizeof(tracker.sin.sin_addr)))
return 0;
tp = tracker.sin.sin_port;
}
else
return 0;
}
else if (tf == AF_INET6)
{
if (memcmp(&sender.sin6.sin6_addr, &tracker.sin6.sin6_addr, sizeof(sender.sin6.sin6_addr)))
return 0;
tp = tracker.sin6.sin6_port;
}
else
return 0;
sp = sender.sin6.sin6_port;
}
else
#endif
if (sf == AF_INET)
{
if (sf != tf)
return 0;
if (memcmp(&sender.sin.sin_addr, &tracker.sin.sin_addr, sizeof(sender.sin.sin_addr)))
return 0;
sp = sender.sin.sin_port;
tp = tracker.sin.sin_port;
}
else
return 0;
if (tp == sp)
return 2;
else
return 1;
}
/* Unregister from the tracker */
static int udp_tracker_unregister()
{
array pBuf;
pBuf[0] = UPID_TRACKER_REMOVE;
return dxx_sendto(TrackerSocket, UDP_Socket[0], &pBuf, 1, 0);
}
namespace dsx {
/* Register or update (i.e. keep alive) a game on the tracker */
static int udp_tracker_register()
{
net_udp_update_netgame();
game_info_light light;
int len = 1, light_len = net_udp_prepare_light_game_info(light);
array pBuf = {};
int len = 1;
pBuf[0] = UPID_TRACKER_REQGAMES;
len += snprintf(reinterpret_cast(&pBuf[1]), sizeof(pBuf)-1, UDP_REQ_ID DXX_VERSION_STR ".%hu", MULTI_PROTO_VERSION );
return dxx_sendto(TrackerSocket, UDP_Socket[0], &pBuf, len, 0);
}
}
/* The tracker has sent us a game. Let's list it. */
static int udp_tracker_process_game( ubyte *data, int data_len, const _sockaddr &sender_addr )
{
// Only accept data from the tracker we specified and only when we look at the netlist (i.e. NETSTAT_BROWSING)
if (!sender_is_tracker(sender_addr, TrackerSocket) || (Network_status != NETSTAT_BROWSING))
return -1;
char *p0 = NULL, *p1 = NULL, *p2 = NULL, *p3 = NULL;
char sIP[47] = {};
array sPort{};
uint16_t iPort = 0, TrackerGameID = 0;
// Get the IP
if ((p0 = strstr(reinterpret_cast(data), "a=")) == NULL)
return -1;
p0 +=2;
if ((p1 = strstr(p0, "/")) == NULL)
return -1;
if (p1-p0 < 1 || p1-p0 > sizeof(sIP))
return -1;
memcpy(sIP, p0, p1-p0);
// Get the port
p1++;
if ((p2 = strstr(p1, "c=")) == NULL)
return -1;
if (p2-p1-1 < 1 || p2-p1-1 > sizeof(sPort))
return -1;
memcpy(&sPort, p1, p2-p1-1);
if (!convert_text_portstring(sPort, iPort, true, true))
return -1;
// Get the DNS stuff
struct _sockaddr sAddr;
if(udp_dns_filladdr(sAddr, sIP, iPort, true, true) < 0)
return -1;
if (data_len < p2-reinterpret_cast(data)+2)
return -1;
TrackerGameID = GET_INTEL_SHORT(p2 + 2);
if ((p3 = strstr(reinterpret_cast(data), "z=")) == NULL)
return -1;
// Now process the actual lite_game packet contained.
int iPos = (p3-p0+5);
net_udp_process_game_info( &data[iPos], data_len - iPos, sAddr, 1, TrackerGameID );
return 0;
}
/* Process ACK's from tracker. We will get up to 5, each internal and external */
static void udp_tracker_process_ack( ubyte *data, int data_len, const _sockaddr &sender_addr )
{
if(!Netgame.Tracker)
return;
if (data_len != 2)
return;
int addr_check = sender_is_tracker(sender_addr, TrackerSocket);
switch (data[1])
{
case 0: // ack coming from the same socket we are already talking with the tracker
if (TrackerAckStatus == TrackerAckState::TACK_NOCONNECTION && addr_check == 2)
{
TrackerAckStatus = TrackerAckState::TACK_INTERNAL;
con_puts(CON_VERBOSE, "[Tracker] Got internal ACK. Your game is hosted!");
}
break;
case 1: // ack from another socket (same IP, different port) to see if we're reachable from the outside
if (TrackerAckStatus <= TrackerAckState::TACK_INTERNAL && addr_check)
{
TrackerAckStatus = TrackerAckState::TACK_EXTERNAL;
con_puts(CON_VERBOSE, "[Tracker] Got external ACK. Your game is hosted and game port is reachable!");
}
break;
}
}
/* 10 seconds passed since we registered our game. If we have not received all ACK's, yet, tell user about that! */
static void udp_tracker_verify_ack_timeout()
{
if (!Netgame.Tracker || !multi_i_am_master() || TrackerAckTime + F1_0*10 > timer_query() || TrackerAckStatus == TrackerAckState::TACK_SEQCOMPL)
return;
if (TrackerAckStatus == TrackerAckState::TACK_NOCONNECTION)
{
TrackerAckStatus = TrackerAckState::TACK_SEQCOMPL; // set this now or we'll run into an endless loop if nm_messagebox triggers.
if (Network_status == NETSTAT_PLAYING)
HUD_init_message(HM_MULTI, "No ACK from tracker. Please check game log.");
else
nm_messagebox(TXT_WARNING, 1, TXT_OK, "No ACK from tracker.\nPlease check game log.");
con_puts(CON_URGENT, "[Tracker] No response from game tracker. Tracker address may be invalid or Tracker may be offline or otherwise unreachable.");
}
else if (TrackerAckStatus == TrackerAckState::TACK_INTERNAL)
con_puts(CON_NORMAL, "[Tracker] No external signal from game tracker. Your game port does not seem to be reachable. Clients will attempt hole-punching to join your game.");
TrackerAckStatus = TrackerAckState::TACK_SEQCOMPL;
}
/* We don't seem to be able to connect to a game. Ask Tracker to send hole punch request to host. */
static void udp_tracker_request_holepunch( uint16_t TrackerGameID )
{
array pBuf;
pBuf[0] = UPID_TRACKER_HOLEPUNCH;
PUT_INTEL_SHORT(&pBuf[1], TrackerGameID);
con_printf(CON_VERBOSE, "[Tracker] Sending hole-punch request for game [%i] to tracker.", TrackerGameID);
dxx_sendto(TrackerSocket, UDP_Socket[0], &pBuf, 3, 0);
}
/* Tracker sent us an address from a client requesting hole punching.
* We'll simply reply with another hole punch packet and wait for them to request our game info properly. */
static void udp_tracker_process_holepunch( ubyte *data, int data_len, const _sockaddr &sender_addr )
{
if (data_len == 1 && !multi_i_am_master())
{
con_puts(CON_VERBOSE, "[Tracker] Received hole-punch pong from a host.");
return;
}
if (!Netgame.Tracker || !sender_is_tracker(sender_addr, TrackerSocket) || !multi_i_am_master())
return;
char *p0, delimiter[] = "/";
char sIP[46] = {};
array sPort{};
uint16_t iPort = 0;
p0 = strtok(reinterpret_cast(data), delimiter);
if (p0 == NULL)
return;
p0++;
memcpy(sIP, p0, strlen(p0));
p0 = strtok(NULL, delimiter);
if (p0 == NULL)
return;
memcpy(&sPort, p0, strlen(p0));
if (!convert_text_portstring(sPort, iPort, true, true))
return;
// Get the DNS stuff
struct _sockaddr sAddr;
if(udp_dns_filladdr(sAddr, sIP, iPort, true, true) < 0)
return;
array pBuf;
pBuf[0] = UPID_TRACKER_HOLEPUNCH;
dxx_sendto(sAddr, UDP_Socket[0], &pBuf, 1, 0);
}
#endif /* USE_TRACKER */