]> git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - sv_main.c
physics: fix and refactor unsticking
[xonotic/darkplaces.git] / sv_main.c
index ac35d949bd16b0b6323bfb13c8d8c0ee34437e5b..1ba1b34e3a591fe9f40e631fef57d3be63064429 100644 (file)
--- a/sv_main.c
+++ b/sv_main.c
@@ -113,7 +113,7 @@ cvar_t sv_gameplayfix_grenadebouncedownslopes = {CF_SERVER, "sv_gameplayfix_gren
 cvar_t sv_gameplayfix_multiplethinksperframe = {CF_SERVER, "sv_gameplayfix_multiplethinksperframe", "1", "allows entities to think more often than the server framerate, primarily useful for very high fire rate weapons"};
 cvar_t sv_gameplayfix_noairborncorpse = {CF_SERVER, "sv_gameplayfix_noairborncorpse", "1", "causes entities (corpses, items, etc) sitting ontop of moving entities (players) to fall when the moving entity (player) is no longer supporting them"};
 cvar_t sv_gameplayfix_noairborncorpse_allowsuspendeditems = {CF_SERVER, "sv_gameplayfix_noairborncorpse_allowsuspendeditems", "1", "causes entities sitting ontop of objects that are instantaneously remove to float in midair (special hack to allow a common level design trick for floating items)"};
-cvar_t sv_gameplayfix_nudgeoutofsolid = {CF_SERVER, "sv_gameplayfix_nudgeoutofsolid", "0", "attempts to fix physics errors (where an object ended up in solid for some reason)"};
+cvar_t sv_gameplayfix_nudgeoutofsolid = {CF_SERVER, "sv_gameplayfix_nudgeoutofsolid", "0", "attempts to fix physics errors where an object ended up in solid for some reason, better than sv_gameplayfix_unstick* but currently has no effect on Q1BSP (unless mod_q1bsp_polygoncollisions is enabled)"};
 cvar_t sv_gameplayfix_nudgeoutofsolid_separation = {CF_SERVER, "sv_gameplayfix_nudgeoutofsolid_separation", "0.03125", "keep objects this distance apart to prevent collision issues on seams"};
 cvar_t sv_gameplayfix_q2airaccelerate = {CF_SERVER, "sv_gameplayfix_q2airaccelerate", "0", "Quake2-style air acceleration"};
 cvar_t sv_gameplayfix_nogravityonground = {CF_SERVER, "sv_gameplayfix_nogravityonground", "0", "turn off gravity when on ground (to get rid of sliding)"};
@@ -126,10 +126,9 @@ cvar_t sv_gameplayfix_swiminbmodels = {CF_SERVER, "sv_gameplayfix_swiminbmodels"
 cvar_t sv_gameplayfix_upwardvelocityclearsongroundflag = {CF_SERVER, "sv_gameplayfix_upwardvelocityclearsongroundflag", "1", "prevents monsters, items, and most other objects from being stuck to the floor when pushed around by damage, and other situations in mods"};
 cvar_t sv_gameplayfix_downtracesupportsongroundflag = {CF_SERVER, "sv_gameplayfix_downtracesupportsongroundflag", "1", "prevents very short moves from clearing onground (which may make the player stick to the floor at high netfps), fixes groundentity not being set when walking onto a mover with sv_gameplayfix_nogravityonground"};
 cvar_t sv_gameplayfix_q1bsptracelinereportstexture = {CF_SERVER, "sv_gameplayfix_q1bsptracelinereportstexture", "1", "enables mods to get accurate trace_texture results on q1bsp by using a surface-hitting traceline implementation rather than the standard solidbsp method, q3bsp always reports texture accurately"};
-cvar_t sv_gameplayfix_unstickplayers = {CF_SERVER, "sv_gameplayfix_unstickplayers", "1", "big hack to try and fix the rare case of MOVETYPE_WALK entities getting stuck in the world clipping hull."};
-cvar_t sv_gameplayfix_unstickentities = {CF_SERVER, "sv_gameplayfix_unstickentities", "1", "hack to check if entities are crossing world collision hull and try to move them to the right position"};
+cvar_t sv_gameplayfix_unstickplayers = {CF_SERVER, "sv_gameplayfix_unstickplayers", "1", "big hack to try and fix the rare case of MOVETYPE_WALK entities getting stuck in the world clipping hull. Quake did something similar."};
+cvar_t sv_gameplayfix_unstickentities = {CF_SERVER, "sv_gameplayfix_unstickentities", "0", "hack to check if entities are crossing world collision hull and try to move them to the right position. Quake didn't do this so maps shouldn't depend on it."};
 cvar_t sv_gameplayfix_fixedcheckwatertransition = {CF_SERVER, "sv_gameplayfix_fixedcheckwatertransition", "1", "fix two very stupid bugs in SV_CheckWaterTransition when watertype is CONTENTS_EMPTY (the bugs causes waterlevel to be 1 on first frame, -1 on second frame - the fix makes it 0 on both frames)"};
-cvar_t sv_gameplayfix_customstats = {CF_SERVER, "sv_gameplayfix_customstats", "0", "Disable stats higher than 220, for use by certain games such as Xonotic"};
 cvar_t sv_gravity = {CF_SERVER | CF_NOTIFY, "sv_gravity","800", "how fast you fall (512 = roughly earth gravity)"};
 cvar_t sv_init_frame_count = {CF_SERVER, "sv_init_frame_count", "2", "number of frames to run to allow everything to settle before letting clients connect"};
 cvar_t sv_idealpitchscale = {CF_SERVER, "sv_idealpitchscale","0.8", "how much to look up/down slopes and stairs when not using freelook"};
@@ -144,6 +143,7 @@ cvar_t sv_nostep = {CF_SERVER | CF_NOTIFY, "sv_nostep","0", "prevents MOVETYPE_S
 cvar_t sv_playerphysicsqc = {CF_SERVER | CF_NOTIFY, "sv_playerphysicsqc", "1", "enables QuakeC function to override player physics"};
 cvar_t sv_progs = {CF_SERVER, "sv_progs", "progs.dat", "selects which quakec progs.dat file to run" };
 cvar_t sv_protocolname = {CF_SERVER, "sv_protocolname", "DP7", "selects network protocol to host for (values include QUAKE, QUAKEDP, NEHAHRAMOVIE, DP1 and up)"};
+cvar_t sv_qcstats = {CF_SERVER, "sv_qcstats", "0", "Disables engine sending of stats 220 and above, for use by certain games such as Xonotic, NOTE: it's strongly recommended that SVQC send correct STAT_MOVEVARS_TICRATE and STAT_MOVEVARS_TIMESCALE"};
 cvar_t sv_random_seed = {CF_SERVER, "sv_random_seed", "", "random seed; when set, on every map start this random seed is used to initialize the random number generator. Don't touch it unless for benchmarking or debugging"};
 cvar_t host_limitlocal = {CF_SERVER, "host_limitlocal", "0", "whether to apply rate limiting to the local player in a listen server (only useful for testing)"};
 cvar_t sv_sound_land = {CF_SERVER, "sv_sound_land", "demon/dland2.wav", "sound to play when MOVETYPE_STEP entity hits the ground at high speed (empty cvar disables the sound)"};
@@ -160,10 +160,15 @@ cvar_t sv_warsowbunny_turnaccel = {CF_SERVER, "sv_warsowbunny_turnaccel", "0", "
 cvar_t sv_warsowbunny_backtosideratio = {CF_SERVER, "sv_warsowbunny_backtosideratio", "0.8", "lower values make it easier to change direction without losing speed; the drawback is \"understeering\" in sharp turns"};
 cvar_t sv_onlycsqcnetworking = {CF_SERVER, "sv_onlycsqcnetworking", "0", "disables legacy entity networking code for higher performance (except on clients, which can still be legacy)"};
 cvar_t sv_areadebug = {CF_SERVER, "sv_areadebug", "0", "disables physics culling for debugging purposes (only for development)"};
+
 cvar_t sys_ticrate = {CF_SERVER | CF_ARCHIVE, "sys_ticrate","0.0138889", "how long a server frame is in seconds, 0.05 is 20fps server rate, 0.1 is 10fps (can not be set higher than 0.1), 0 runs as many server frames as possible (makes games against bots a little smoother, overwhelms network players), 0.0138889 matches QuakeWorld physics"};
+cvar_t sv_maxphysicsframesperserverframe = {CF_SERVER, "sv_maxphysicsframesperserverframe","10", "maximum number of physics frames per server frame"};
+cvar_t sv_lagreporting_always = {CF_SERVER, "sv_lagreporting_always", "0", "report lag even in singleplayer, listen, or an empty dedicated server"};
+cvar_t sv_lagreporting_strict = {CF_SERVER, "sv_lagreporting_strict", "0", "log any extra frames run to catch up after a holdup (only applies when sv_maxphysicsframesperserverframe > 1)"};
+cvar_t sv_threaded = {CF_SERVER, "sv_threaded", "0", "enables a separate thread for server code, improving performance, especially when hosting a game while playing, EXPERIMENTAL, may be crashy"};
+
 cvar_t teamplay = {CF_SERVER | CF_NOTIFY, "teamplay","0", "teamplay mode, values depend on mod but typically 0 = no teams, 1 = no team damage no self damage, 2 = team damage and self damage, some mods support 3 = no team damage but can damage self"};
 cvar_t timelimit = {CF_SERVER | CF_NOTIFY, "timelimit","0", "ends level at this time (in minutes)"};
-cvar_t sv_threaded = {CF_SERVER, "sv_threaded", "0", "enables a separate thread for server code, improving performance, especially when hosting a game while playing, EXPERIMENTAL, may be crashy"};
 
 cvar_t sv_rollspeed = {CF_CLIENT, "sv_rollspeed", "200", "how much strafing is necessary to tilt the view"};
 cvar_t sv_rollangle = {CF_CLIENT, "sv_rollangle", "2.0", "how much to tilt the view when strafing"};
@@ -260,12 +265,11 @@ static const char *standardeffectnames[EFFECT_TOTAL] =
        "SVC_PARTICLE"
 };
 
-#define SV_REQFUNCS 0
-#define sv_reqfuncs NULL
 
-//#define SV_REQFUNCS (sizeof(sv_reqfuncs) / sizeof(const char *))
-//static const char *sv_reqfuncs[] = {
-//};
+static void SV_CheckRequiredFuncs(prvm_prog_t *prog, const char *filename)
+{
+       // no required funcs?!
+}
 
 #define SV_REQFIELDS (sizeof(sv_reqfields) / sizeof(prvm_required_field_t))
 
@@ -608,7 +612,7 @@ void SV_Init (void)
        Cvar_RegisterVariable (&sv_gameplayfix_unstickplayers);
        Cvar_RegisterVariable (&sv_gameplayfix_unstickentities);
        Cvar_RegisterVariable (&sv_gameplayfix_fixedcheckwatertransition);
-       Cvar_RegisterVariable (&sv_gameplayfix_customstats);
+       Cvar_RegisterVariable (&sv_qcstats);
        Cvar_RegisterVariable (&sv_gravity);
        Cvar_RegisterVariable (&sv_init_frame_count);
        Cvar_RegisterVariable (&sv_idealpitchscale);
@@ -640,10 +644,15 @@ void SV_Init (void)
        Cvar_RegisterVariable (&sv_warsowbunny_backtosideratio);
        Cvar_RegisterVariable (&sv_onlycsqcnetworking);
        Cvar_RegisterVariable (&sv_areadebug);
+
        Cvar_RegisterVariable (&sys_ticrate);
+       Cvar_RegisterVariable (&sv_maxphysicsframesperserverframe);
+       Cvar_RegisterVariable (&sv_lagreporting_always);
+       Cvar_RegisterVariable (&sv_lagreporting_strict);
+       Cvar_RegisterVariable (&sv_threaded);
+
        Cvar_RegisterVariable (&teamplay);
        Cvar_RegisterVariable (&timelimit);
-       Cvar_RegisterVariable (&sv_threaded);
 
        Cvar_RegisterVariable (&sv_rollangle);
        Cvar_RegisterVariable (&sv_rollspeed);
@@ -786,7 +795,7 @@ void SV_SendServerinfo (client_t *client)
 
        SZ_Clear (&client->netconnection->message);
        MSG_WriteByte (&client->netconnection->message, svc_print);
-       dpsnprintf (message, sizeof (message), "\nServer: %s build %s (progs %i crc)\n", gamename, buildstring, prog->filecrc);
+       dpsnprintf (message, sizeof (message), "\nServer: %s (progs %i crc)\n", engineversion, prog->filecrc);
        MSG_WriteString (&client->netconnection->message,message);
 
        SV_StopDemoRecording(client); // to split up demos into different files
@@ -949,8 +958,8 @@ void SV_ConnectClient (int clientnum, netconn_t *netconnection)
                                );
        }
 
-       strlcpy(client->name, "unconnected", sizeof(client->name));
-       strlcpy(client->old_name, "unconnected", sizeof(client->old_name));
+       dp_strlcpy(client->name, "unconnected", sizeof(client->name));
+       dp_strlcpy(client->old_name, "unconnected", sizeof(client->old_name));
        client->prespawned = false;
        client->spawned = false;
        client->begun = false;
@@ -1227,7 +1236,7 @@ static void SV_Download_f(cmd_state_t *cmd)
 
        Download_CheckExtensions(cmd);
 
-       strlcpy(host_client->download_name, Cmd_Argv(cmd, 1), sizeof(host_client->download_name));
+       dp_strlcpy(host_client->download_name, Cmd_Argv(cmd, 1), sizeof(host_client->download_name));
        extension = FS_FileExtension(host_client->download_name);
 
        // host_client is asking to download a specified file
@@ -1240,7 +1249,7 @@ static void SV_Download_f(cmd_state_t *cmd)
                extensions[0] = '\0';
                
                if(host_client->download_deflate)
-                       strlcat(extensions, " deflate", sizeof(extensions));
+                       dp_strlcat(extensions, " deflate", sizeof(extensions));
                
                Con_DPrintf("Downloading %s to %s\n", host_client->download_name, host_client->name);
 
@@ -1395,7 +1404,7 @@ int SV_ModelIndex(const char *s, int precachemode)
        // testing
        //if (precachemode == 2)
        //      return 0;
-       strlcpy(filename, s, sizeof(filename));
+       dp_strlcpy(filename, s, sizeof(filename));
        for (i = 2;i < limit;i++)
        {
                if (!sv.model_precache[i][0])
@@ -1409,7 +1418,7 @@ int SV_ModelIndex(const char *s, int precachemode)
                                }
                                if (precachemode == 1)
                                        Con_Printf("SV_ModelIndex(\"%s\"): not precached (fix your code), precaching anyway\n", filename);
-                               strlcpy(sv.model_precache[i], filename, sizeof(sv.model_precache[i]));
+                               dp_strlcpy(sv.model_precache[i], filename, sizeof(sv.model_precache[i]));
                                if (sv.state == ss_loading)
                                {
                                        // running from SV_SpawnServer which is launched from the client console command interpreter
@@ -1458,7 +1467,7 @@ int SV_SoundIndex(const char *s, int precachemode)
        // testing
        //if (precachemode == 2)
        //      return 0;
-       strlcpy(filename, s, sizeof(filename));
+       dp_strlcpy(filename, s, sizeof(filename));
        for (i = 1;i < limit;i++)
        {
                if (!sv.sound_precache[i][0])
@@ -1472,7 +1481,7 @@ int SV_SoundIndex(const char *s, int precachemode)
                                }
                                if (precachemode == 1)
                                        Con_Printf("SV_SoundIndex(\"%s\"): not precached (fix your code), precaching anyway\n", filename);
-                               strlcpy(sv.sound_precache[i], filename, sizeof(sv.sound_precache[i]));
+                               dp_strlcpy(sv.sound_precache[i], filename, sizeof(sv.sound_precache[i]));
                                if (sv.state != ss_loading)
                                {
                                        MSG_WriteByte(&sv.reliable_datagram, svc_precache);
@@ -1513,7 +1522,7 @@ int SV_ParticleEffectIndex(const char *name)
                sv.particleeffectnamesloaded = true;
                memset(sv.particleeffectname, 0, sizeof(sv.particleeffectname));
                for (i = 0;i < EFFECT_TOTAL;i++)
-                       strlcpy(sv.particleeffectname[i], standardeffectnames[i], sizeof(sv.particleeffectname[i]));
+                       dp_strlcpy(sv.particleeffectname[i], standardeffectnames[i], sizeof(sv.particleeffectname[i]));
                for (filepass = 0;;filepass++)
                {
                        if (filepass == 0)
@@ -1537,7 +1546,7 @@ int SV_ParticleEffectIndex(const char *name)
                                                break;
                                        if (argc < 16)
                                        {
-                                               strlcpy(argv[argc], com_token, sizeof(argv[argc]));
+                                               dp_strlcpy(argv[argc], com_token, sizeof(argv[argc]));
                                                argc++;
                                        }
                                }
@@ -1558,7 +1567,7 @@ int SV_ParticleEffectIndex(const char *name)
                                                        }
                                                        else
                                                        {
-                                                               strlcpy(sv.particleeffectname[effectnameindex], argv[1], sizeof(sv.particleeffectname[effectnameindex]));
+                                                               dp_strlcpy(sv.particleeffectname[effectnameindex], argv[1], sizeof(sv.particleeffectname[effectnameindex]));
                                                                break;
                                                        }
                                                }
@@ -1711,7 +1720,7 @@ static void SV_Prepare_CSQC(void)
 
                sv.csqc_progsize = (int)progsize;
                sv.csqc_progcrc = CRC_Block(svs.csqc_progdata, progsize);
-               strlcpy(sv.csqc_progname, csqc_progname.string, sizeof(sv.csqc_progname));
+               dp_strlcpy(sv.csqc_progname, csqc_progname.string, sizeof(sv.csqc_progname));
                Con_DPrintf("server detected csqc progs file \"%s\" with size %i and crc %i\n", sv.csqc_progname, sv.csqc_progsize, sv.csqc_progcrc);
 
                Con_DPrint("Compressing csprogs.dat\n");
@@ -1763,6 +1772,21 @@ int SV_IsLocalServer(void)
        return (host_isclient.integer && sv.active ? svs.maxclients : 0);
 }
 
+static void SV_VM_Shutdown(qbool prog_reset)
+{
+       prvm_prog_t *prog = SVVM_prog;
+
+       if(prog->loaded && PRVM_serverfunction(SV_Shutdown))
+       {
+               func_t s = PRVM_serverfunction(SV_Shutdown);
+               PRVM_serverglobalfloat(time) = sv.time;
+               PRVM_serverfunction(SV_Shutdown) = 0; // prevent it from getting called again
+               prog->ExecuteProgram(prog, s,"SV_Shutdown() required");
+       }
+       if (prog_reset)
+               PRVM_Prog_Reset(prog);
+}
+
 /*
 ================
 SV_SpawnServer
@@ -1779,21 +1803,26 @@ void SV_SpawnServer (const char *map)
        char *entities;
        model_t *worldmodel;
        char modelname[sizeof(sv.worldname)];
+       const char *canonicalname;
        char vabuf[1024];
 
        Con_Printf("SpawnServer: %s\n", map);
 
        dpsnprintf (modelname, sizeof(modelname), "maps/%s.bsp", map);
 
-       if (!FS_FileExists(modelname))
+       if (!(canonicalname = FS_FileExists(modelname)))
        {
                dpsnprintf (modelname, sizeof(modelname), "maps/%s", map);
-               if (!FS_FileExists(modelname))
+               if (!(canonicalname = FS_FileExists(modelname)))
                {
-                       Con_Printf("SpawnServer: no map file named %s\n", modelname);
+                       Con_Printf(CON_ERROR "SpawnServer: no map file named %s.bsp\n", modelname);
                        return;
                }
        }
+       // if it's not in a pak canonicalname will be the same pointer as modelname
+       // if it's in a pak canonicalname may differ by case
+       if (modelname != canonicalname)
+               dp_strlcpy(modelname, canonicalname, sizeof(modelname));
 
 //     SV_LockThreadMutex();
 
@@ -1806,16 +1835,7 @@ void SV_SpawnServer (const char *map)
        }
 
        if(sv.active)
-       {
-               World_End(&sv.world);
-               if(PRVM_serverfunction(SV_Shutdown))
-               {
-                       func_t s = PRVM_serverfunction(SV_Shutdown);
-                       PRVM_serverglobalfloat(time) = sv.time;
-                       PRVM_serverfunction(SV_Shutdown) = 0; // prevent it from getting called again
-                       prog->ExecuteProgram(prog, s,"SV_Shutdown() required");
-               }
-       }
+               SV_VM_Shutdown(false);
 
        // free q3 shaders so that any newly downloaded shaders will be active
        Mod_FreeQ3Shaders();
@@ -1823,7 +1843,7 @@ void SV_SpawnServer (const char *map)
        worldmodel = Mod_ForName(modelname, false, developer.integer > 0, NULL);
        if (!worldmodel || !worldmodel->TraceBox)
        {
-               Con_Printf("Couldn't load map %s\n", modelname);
+               Con_Printf(CON_ERROR "Couldn't load map %s\n", modelname);
 
                if(!host_isclient.integer)
                        Sys_MakeProcessMean();
@@ -1889,6 +1909,10 @@ void SV_SpawnServer (const char *map)
 // set up the new server
 //
        memset (&sv, 0, sizeof(sv));
+
+       // tell SV_Frame() to reset its timers
+       sv.spawnframe = host.framecount;
+
        // if running a local client, make sure it doesn't try to access the last
        // level's data which is no longer valiud
        cls.signon = 0;
@@ -1908,10 +1932,10 @@ void SV_SpawnServer (const char *map)
        sv.active = true;
 
        // set level base name variables for later use
-       strlcpy (sv.name, map, sizeof (sv.name));
-       strlcpy(sv.worldname, modelname, sizeof(sv.worldname));
+       dp_strlcpy(sv.worldname, modelname, sizeof(sv.worldname));
        FS_StripExtension(sv.worldname, sv.worldnamenoextension, sizeof(sv.worldnamenoextension));
-       strlcpy(sv.worldbasename, !strncmp(sv.worldnamenoextension, "maps/", 5) ? sv.worldnamenoextension + 5 : sv.worldnamenoextension, sizeof(sv.worldbasename));
+       dp_strlcpy(sv.worldbasename, !strncasecmp(sv.worldnamenoextension, "maps/", 5) ? sv.worldnamenoextension + 5 : sv.worldnamenoextension, sizeof(sv.worldbasename));
+//     dp_strlcpy(sv.name, sv.worldbasename, sizeof (sv.name)); // TODO can we just remove this now?
        //Cvar_SetQuick(&sv_worldmessage, sv.worldmessage); // set later after QC is spawned
        Cvar_SetQuick(&sv_worldname, sv.worldname);
        Cvar_SetQuick(&sv_worldnamenoextension, sv.worldnamenoextension);
@@ -1962,17 +1986,17 @@ void SV_SpawnServer (const char *map)
        World_SetSize(&sv.world, sv.worldname, sv.worldmodel->normalmins, sv.worldmodel->normalmaxs, prog);
        World_Start(&sv.world);
 
-       strlcpy(sv.sound_precache[0], "", sizeof(sv.sound_precache[0]));
+       dp_strlcpy(sv.sound_precache[0], "", sizeof(sv.sound_precache[0]));
 
-       strlcpy(sv.model_precache[0], "", sizeof(sv.model_precache[0]));
-       strlcpy(sv.model_precache[1], sv.worldname, sizeof(sv.model_precache[1]));
+       dp_strlcpy(sv.model_precache[0], "", sizeof(sv.model_precache[0]));
+       dp_strlcpy(sv.model_precache[1], sv.worldname, sizeof(sv.model_precache[1]));
        for (i = 1;i < sv.worldmodel->brush.numsubmodels && i+1 < MAX_MODELS;i++)
        {
                dpsnprintf(sv.model_precache[i+1], sizeof(sv.model_precache[i+1]), "*%i", i);
                sv.models[i+1] = Mod_ForName (sv.model_precache[i+1], false, false, sv.worldname);
        }
        if(i < sv.worldmodel->brush.numsubmodels)
-               Con_Printf("Too many submodels (MAX_MODELS is %i)\n", MAX_MODELS);
+               Con_Printf(CON_WARN "Too many submodels (MAX_MODELS is %i)\n", MAX_MODELS);
 
 //
 // load the rest of the entities
@@ -1995,7 +2019,7 @@ void SV_SpawnServer (const char *map)
        else
                PRVM_serverglobalfloat(deathmatch) = deathmatch.integer;
 
-       PRVM_serverglobalstring(mapname) = PRVM_SetEngineString(prog, sv.name);
+       PRVM_serverglobalstring(mapname) = PRVM_SetEngineString(prog, sv.worldbasename);
 
 // serverflags are for cross level information (sigils)
        PRVM_serverglobalfloat(serverflags) = svs.serverflags;
@@ -2077,9 +2101,8 @@ void SV_SpawnServer (const char *map)
                }
        }
 
-       // update the map title cvar
-       strlcpy(sv.worldmessage, PRVM_GetString(prog, PRVM_serveredictstring(prog->edicts, message)), sizeof(sv.worldmessage)); // map title (not related to filename)
-       Cvar_SetQuick(&sv_worldmessage, sv.worldmessage);
+       // update the map title cvar (not related to filename)
+       Cvar_SetQuick(&sv_worldmessage, PRVM_GetString(prog, PRVM_serveredictstring(prog->edicts, message)));
 
        Con_Printf("Server spawned.\n");
        NetConn_Heartbeat (2);
@@ -2099,7 +2122,6 @@ This only happens at the end of a game, not between levels
 */
 void SV_Shutdown(void)
 {
-       prvm_prog_t *prog = SVVM_prog;
        int i;
 
        SV_LockThreadMutex();
@@ -2112,22 +2134,13 @@ void SV_Shutdown(void)
        NetConn_Heartbeat(2);
        NetConn_Heartbeat(2);
 
-// make sure all the clients know we're disconnecting
-       World_End(&sv.world);
-       if(prog->loaded)
-       {
-               if(PRVM_serverfunction(SV_Shutdown))
-               {
-                       func_t s = PRVM_serverfunction(SV_Shutdown);
-                       PRVM_serverglobalfloat(time) = sv.time;
-                       PRVM_serverfunction(SV_Shutdown) = 0; // prevent it from getting called again
-                       prog->ExecuteProgram(prog, s,"SV_Shutdown() required");
-               }
-       }
+       // make sure all the clients know we're disconnecting
        for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
                if (host_client->active)
                        SV_DropClient(false, "Server shutting down"); // server shutdown
 
+       SV_VM_Shutdown(true);
+
        NetConn_CloseServerPorts();
 
        sv.active = false;
@@ -2332,7 +2345,7 @@ static void SV_VM_Setup(void)
        prog->error_cmd             = Host_Error;
        prog->ExecuteProgram        = SVVM_ExecuteProgram;
 
-       PRVM_Prog_Load(prog, sv_progs.string, NULL, 0, SV_REQFUNCS, sv_reqfuncs, SV_REQFIELDS, sv_reqfields, SV_REQGLOBALS, sv_reqglobals);
+       PRVM_Prog_Load(prog, sv_progs.string, NULL, 0, SV_CheckRequiredFuncs, SV_REQFIELDS, sv_reqfields, SV_REQGLOBALS, sv_reqglobals);
 
        // some mods compiled with scrambling compilers lack certain critical
        // global names and field names such as "self" and "time" and "nextthink"
@@ -2502,55 +2515,61 @@ Returns a time report string, for example for
 */
 const char *SV_TimingReport(char *buf, size_t buflen)
 {
-       return va(buf, buflen, "%.1f%% CPU, %.2f%% lost, offset avg %.1fms, max %.1fms, sdev %.1fms", svs.perf_cpuload * 100, svs.perf_lost * 100, svs.perf_offset_avg * 1000, svs.perf_offset_max * 1000, svs.perf_offset_sdev * 1000);
+       return va(buf, buflen, "%.1f%% CPU, %.2f%% lost, offset avg %.1fms, max %.1fms, sdev %.1fms", sv.perf_cpuload * 100, sv.perf_lost * 100, sv.perf_offset_avg * 1000, sv.perf_offset_max * 1000, sv.perf_offset_sdev * 1000);
 }
 
-extern cvar_t host_maxwait;
 extern cvar_t host_framerate;
-extern cvar_t cl_maxphysicsframesperserverframe;
 double SV_Frame(double time)
 {
        static double sv_timer;
        int i;
        char vabuf[1024];
-       qbool playing = false;
+       qbool reporting = false;
+
+       // reset timer after level change
+       if (host.framecount == sv.spawnframe || host.framecount == sv.spawnframe + 1)
+               sv_timer = time = host.sleeptime = 0;
 
        if (!svs.threaded)
        {
-               svs.perf_acc_sleeptime = host.sleeptime;
-               svs.perf_acc_realtime += time;
+               sv.perf_acc_sleeptime += host.sleeptime;
+               sv.perf_acc_realtime += time;
 
-               // Look for clients who have spawned
-               for (i = 0, host_client = svs.clients; i < svs.maxclients; i++, host_client++)
-                       if(host_client->begun && host_client->netconnection)
-                               playing = true;
+               if (sv_lagreporting_always.integer)
+                       reporting = true;
+               else if (cls.state == ca_dedicated)
+               {
+                       // Report lag if there's players, so they know it wasn't the network or their machine
+                       for (i = 0; i < svs.maxclients; ++i)
+                       {
+                               if (svs.clients[i].begun && svs.clients[i].netconnection)
+                               {
+                                       reporting = true;
+                                       break;
+                               }
+                       }
+               }
 
-               if(svs.perf_acc_realtime > 5)
+               if(sv.perf_acc_realtime > 5)
                {
-                       svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
-                       svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
+                       sv.perf_cpuload = 1 - sv.perf_acc_sleeptime / sv.perf_acc_realtime;
+                       sv.perf_lost = sv.perf_acc_lost / sv.perf_acc_realtime;
 
-                       if(svs.perf_acc_offset_samples > 0)
+                       if(sv.perf_acc_offset_samples > 0)
                        {
-                               svs.perf_offset_max = svs.perf_acc_offset_max;
-                               svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
-                               svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
+                               sv.perf_offset_max = sv.perf_acc_offset_max;
+                               sv.perf_offset_avg = sv.perf_acc_offset / sv.perf_acc_offset_samples;
+                               sv.perf_offset_sdev = sv.perf_acc_offset_squared / sv.perf_acc_offset_samples - sv.perf_offset_avg * sv.perf_offset_avg;
+                               sv.perf_offset_sdev = sv.perf_offset_sdev > 0 ? sqrt(sv.perf_offset_sdev) : 0;
                        }
 
-                       if(svs.perf_lost > 0 && developer_extra.integer && playing) // only complain if anyone is looking
-                               Con_DPrintf("Server can't keep up: %s\n", SV_TimingReport(vabuf, sizeof(vabuf)));
-               }
+                       if (sv.perf_lost > 0 && reporting)
+                               SV_BroadcastPrintf("\003" CON_WARN "Server lag report: %s\n", SV_TimingReport(vabuf, sizeof(vabuf)));
 
-               if(svs.perf_acc_realtime > 5 || sv.time < 10)
-               {
-                       /*
-                        * Don't accumulate time for the first 10 seconds of a match
-                        * so things can settle
-                        */
-                       svs.perf_acc_realtime = svs.perf_acc_sleeptime =
-                       svs.perf_acc_lost = svs.perf_acc_offset =
-                       svs.perf_acc_offset_squared = svs.perf_acc_offset_max =
-                       svs.perf_acc_offset_samples = host.sleeptime = 0;
+                       sv.perf_acc_realtime = sv.perf_acc_sleeptime =
+                       sv.perf_acc_lost = sv.perf_acc_offset =
+                       sv.perf_acc_offset_squared = sv.perf_acc_offset_max =
+                       sv.perf_acc_offset_samples = 0;
                }
 
                /*
@@ -2576,7 +2595,7 @@ double SV_Frame(double time)
        if (sv_timer > 0.1)
        {
                if (!svs.threaded)
-                       svs.perf_acc_lost += (sv_timer - 0.1);
+                       sv.perf_acc_lost += (sv_timer - 0.1);
                sv_timer = 0.1;
        }
 
@@ -2603,8 +2622,8 @@ double SV_Frame(double time)
                {
                        advancetime = sys_ticrate.value;
                        // listen servers can run multiple server frames per client frame
-                       if (cl_maxphysicsframesperserverframe.integer > 0)
-                               framelimit = cl_maxphysicsframesperserverframe.integer;
+                       if (sv_maxphysicsframesperserverframe.integer > 0)
+                               framelimit = sv_maxphysicsframesperserverframe.integer;
                        aborttime = Sys_DirtyTime() + 0.1;
                }
 
@@ -2620,12 +2639,12 @@ double SV_Frame(double time)
                                offset = 0;
 
                        offset += sv_timer;
-                       ++svs.perf_acc_offset_samples;
-                       svs.perf_acc_offset += offset;
-                       svs.perf_acc_offset_squared += offset * offset;
+                       ++sv.perf_acc_offset_samples;
+                       sv.perf_acc_offset += offset;
+                       sv.perf_acc_offset_squared += offset * offset;
                        
-                       if(svs.perf_acc_offset_max < offset)
-                               svs.perf_acc_offset_max = offset;
+                       if(sv.perf_acc_offset_max < offset)
+                               sv.perf_acc_offset_max = offset;
                }
 
                // only advance time if not paused
@@ -2649,6 +2668,9 @@ double SV_Frame(double time)
                                break;
                }
 
+               if (framecount > 1 && sv_lagreporting_strict.integer && reporting)
+                       SV_BroadcastPrintf(CON_WARN "Server lag report: caught up %.1fms by running %d extra frames\n", advancetime * (framecount - 1) * 1000, framecount - 1);
+
                R_TimeReport("serverphysics");
 
                // send all messages to the clients
@@ -2675,7 +2697,7 @@ double SV_Frame(double time)
        if (sv_timer >= 0)
        {
                if (!svs.threaded)
-                       svs.perf_acc_lost += sv_timer;
+                       sv.perf_acc_lost += sv_timer;
                sv_timer = 0;
        }
 
@@ -2688,7 +2710,6 @@ static int SV_ThreadFunc(void *voiddata)
        qbool playing = false;
        double sv_timer = 0;
        double sv_deltarealtime, sv_oldrealtime, sv_realtime;
-       double wait;
        int i;
        char vabuf[1024];
        sv_realtime = Sys_DirtyTime();
@@ -2705,7 +2726,7 @@ static int SV_ThreadFunc(void *voiddata)
 
                sv_timer += sv_deltarealtime;
 
-               svs.perf_acc_realtime += sv_deltarealtime;
+               sv.perf_acc_realtime += sv_deltarealtime;
 
                // at this point we start doing real server work, and must block on any client activity pertaining to the server (such as executing SV_SpawnServer)
                SV_LockThreadMutex();
@@ -2721,22 +2742,22 @@ static int SV_ThreadFunc(void *voiddata)
                {
                        // don't accumulate time for the first 10 seconds of a match
                        // so things can settle
-                       svs.perf_acc_realtime = svs.perf_acc_sleeptime = svs.perf_acc_lost = svs.perf_acc_offset = svs.perf_acc_offset_squared = svs.perf_acc_offset_max = svs.perf_acc_offset_samples = 0;
+                       sv.perf_acc_realtime = sv.perf_acc_sleeptime = sv.perf_acc_lost = sv.perf_acc_offset = sv.perf_acc_offset_squared = sv.perf_acc_offset_max = sv.perf_acc_offset_samples = 0;
                }
-               else if(svs.perf_acc_realtime > 5)
+               else if(sv.perf_acc_realtime > 5)
                {
-                       svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
-                       svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
-                       if(svs.perf_acc_offset_samples > 0)
+                       sv.perf_cpuload = 1 - sv.perf_acc_sleeptime / sv.perf_acc_realtime;
+                       sv.perf_lost = sv.perf_acc_lost / sv.perf_acc_realtime;
+                       if(sv.perf_acc_offset_samples > 0)
                        {
-                               svs.perf_offset_max = svs.perf_acc_offset_max;
-                               svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
-                               svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
+                               sv.perf_offset_max = sv.perf_acc_offset_max;
+                               sv.perf_offset_avg = sv.perf_acc_offset / sv.perf_acc_offset_samples;
+                               sv.perf_offset_sdev = sqrt(sv.perf_acc_offset_squared / sv.perf_acc_offset_samples - sv.perf_offset_avg * sv.perf_offset_avg);
                        }
-                       if(svs.perf_lost > 0 && developer_extra.integer)
+                       if(sv.perf_lost > 0 && developer_extra.integer)
                                if(playing)
                                        Con_DPrintf("Server can't keep up: %s\n", SV_TimingReport(vabuf, sizeof(vabuf)));
-                       svs.perf_acc_realtime = svs.perf_acc_sleeptime = svs.perf_acc_lost = svs.perf_acc_offset = svs.perf_acc_offset_squared = svs.perf_acc_offset_max = svs.perf_acc_offset_samples = 0;
+                       sv.perf_acc_realtime = sv.perf_acc_sleeptime = sv.perf_acc_lost = sv.perf_acc_offset = sv.perf_acc_offset_squared = sv.perf_acc_offset_max = sv.perf_acc_offset_samples = 0;
                }
 
                // get new packets
@@ -2747,21 +2768,10 @@ static int SV_ThreadFunc(void *voiddata)
                }
 
                // if the accumulators haven't become positive yet, wait a while
-               wait = sv_timer * -1000000.0;
-               if (wait >= 1)
+               if (sv_timer < 0)
                {
-                       double time0, delta;
                        SV_UnlockThreadMutex(); // don't keep mutex locked while sleeping
-                       if (host_maxwait.value <= 0)
-                               wait = min(wait, 1000000.0);
-                       else
-                               wait = min(wait, host_maxwait.value * 1000.0);
-                       if(wait < 1)
-                               wait = 1; // because we cast to int
-                       time0 = Sys_DirtyTime();
-                       Sys_Sleep((int)wait);
-                       delta = Sys_DirtyTime() - time0;if (delta < 0 || delta >= 1800) delta = 0;
-                       svs.perf_acc_sleeptime += delta;
+                       sv.perf_acc_sleeptime += Sys_Sleep(-sv_timer);
                        continue;
                }
 
@@ -2779,11 +2789,11 @@ static int SV_ThreadFunc(void *voiddata)
                        if(advancetime > 0)
                        {
                                offset = sv_timer + (Sys_DirtyTime() - sv_realtime); // LadyHavoc: FIXME: I don't understand this line
-                               ++svs.perf_acc_offset_samples;
-                               svs.perf_acc_offset += offset;
-                               svs.perf_acc_offset_squared += offset * offset;
-                               if(svs.perf_acc_offset_max < offset)
-                                       svs.perf_acc_offset_max = offset;
+                               ++sv.perf_acc_offset_samples;
+                               sv.perf_acc_offset += offset;
+                               sv.perf_acc_offset_squared += offset * offset;
+                               if(sv.perf_acc_offset_max < offset)
+                                       sv.perf_acc_offset_max = offset;
                        }
 
                        // only advance time if not paused
@@ -2821,7 +2831,7 @@ static int SV_ThreadFunc(void *voiddata)
                // if there is some time remaining from this frame, reset the timers
                if (sv_timer >= 0)
                {
-                       svs.perf_acc_lost += sv_timer;
+                       sv.perf_acc_lost += sv_timer;
                        sv_timer = 0;
                }
        }