protocol.c

   1 #include "quakedef.h"
   2
   3 // this is 88 bytes (must match entity_state_t in protocol.h)
   4 entity_state_t defaultstate =
   5 {
   6         // ! means this is not sent to client
   7         0,//double time; // ! time this state was built (used on client for interpolation)
   8         {0,0,0},//float netcenter[3]; // ! for network prioritization, this is the center of the bounding box (which may differ from the origin)
   9         {0,0,0},//float origin[3];
  10         {0,0,0},//float angles[3];
  11         0,//int effects;
  12         0,//unsigned int customizeentityforclient; // !
  13         0,//unsigned short number; // entity number this state is for
  14         0,//unsigned short modelindex;
  15         0,//unsigned short frame;
  16         0,//unsigned short tagentity;
  17         0,//unsigned short specialvisibilityradius; // ! larger if it has effects/light
  18         0,//unsigned short viewmodelforclient; // !
  19         0,//unsigned short exteriormodelforclient; // ! not shown if first person viewing from this entity, shown in all other cases
  20         0,//unsigned short nodrawtoclient; // !
  21         0,//unsigned short drawonlytoclient; // !
  22         0,//unsigned short traileffectnum;
  23         {0,0,0,0},//unsigned short light[4]; // color*256 (0.00 to 255.996), and radius*1
  24         ACTIVE_NOT,//unsigned char active; // true if a valid state
  25         0,//unsigned char lightstyle;
  26         0,//unsigned char lightpflags;
  27         0,//unsigned char colormap;
  28         0,//unsigned char skin; // also chooses cubemap for rtlights if lightpflags & LIGHTPFLAGS_FULLDYNAMIC
  29         255,//unsigned char alpha;
  30         16,//unsigned char scale;
  31         0,//unsigned char glowsize;
  32         254,//unsigned char glowcolor;
  33         0,//unsigned char flags;
  34         0,//unsigned char internaleffects; // INTEF_FLAG1QW and so on
  35         0,//unsigned char tagindex;
  36         {32, 32, 32},//unsigned char colormod[3];
  37         {32, 32, 32},//unsigned char glowmod[3];
  38 };
  39
  40 // LadyHavoc: I own protocol ranges 96, 97, 3500-3599
  41
  42 struct protocolversioninfo_s
  43 {
  44         int number;
  45         protocolversion_t version;
  46         const char *name;
  47 }
  48 protocolversioninfo[] =
  49 {
  50         { 3505, PROTOCOL_DARKPLACES8 , "DP8"},
  51         { 3504, PROTOCOL_DARKPLACES7 , "DP7"},
  52         { 3503, PROTOCOL_DARKPLACES6 , "DP6"},
  53         { 3502, PROTOCOL_DARKPLACES5 , "DP5"},
  54         { 3501, PROTOCOL_DARKPLACES4 , "DP4"},
  55         { 3500, PROTOCOL_DARKPLACES3 , "DP3"},
  56         {   97, PROTOCOL_DARKPLACES2 , "DP2"},
  57         {   96, PROTOCOL_DARKPLACES1 , "DP1"},
  58         {   15, PROTOCOL_QUAKEDP     , "QUAKEDP"},
  59         {   15, PROTOCOL_QUAKE       , "QUAKE"},
  60         {   28, PROTOCOL_QUAKEWORLD  , "QW"},
  61         {  250, PROTOCOL_NEHAHRAMOVIE, "NEHAHRAMOVIE"},
  62         {10000, PROTOCOL_NEHAHRABJP  , "NEHAHRABJP"},
  63         {10001, PROTOCOL_NEHAHRABJP2 , "NEHAHRABJP2"},
  64         {10002, PROTOCOL_NEHAHRABJP3 , "NEHAHRABJP3"},
  65         {    0, PROTOCOL_UNKNOWN     , NULL}
  66 };
  67
  68 protocolversion_t Protocol_EnumForName(const char *s)
  69 {
  70         int i;
  71         for (i = 0;protocolversioninfo[i].name;i++)
  72                 if (!strcasecmp(s, protocolversioninfo[i].name))
  73                         return protocolversioninfo[i].version;
  74         return PROTOCOL_UNKNOWN;
  75 }
  76
  77 const char *Protocol_NameForEnum(protocolversion_t p)
  78 {
  79         int i;
  80         for (i = 0;protocolversioninfo[i].name;i++)
  81                 if (protocolversioninfo[i].version == p)
  82                         return protocolversioninfo[i].name;
  83         return "UNKNOWN";
  84 }
  85
  86 protocolversion_t Protocol_EnumForNumber(int n)
  87 {
  88         int i;
  89         for (i = 0;protocolversioninfo[i].name;i++)
  90                 if (protocolversioninfo[i].number == n)
  91                         return protocolversioninfo[i].version;
  92         return PROTOCOL_UNKNOWN;
  93 }
  94
  95 int Protocol_NumberForEnum(protocolversion_t p)
  96 {
  97         int i;
  98         for (i = 0;protocolversioninfo[i].name;i++)
  99                 if (protocolversioninfo[i].version == p)
 100                         return protocolversioninfo[i].number;
 101         return 0;
 102 }
 103
 104 void Protocol_Names(char *buffer, size_t buffersize)
 105 {
 106         int i;
 107         if (buffersize < 1)
 108                 return;
 109         buffer[0] = 0;
 110         for (i = 0;protocolversioninfo[i].name;i++)
 111         {
 112                 if (i > 0)
 113                         strlcat(buffer, " ", buffersize);
 114                 strlcat(buffer, protocolversioninfo[i].name, buffersize);
 115         }
 116 }
 117
 118 void Protocol_UpdateClientStats(const int *stats)
 119 {
 120         int i;
 121         // update the stats array and set deltabits for any changed stats
 122         for (i = 0;i < MAX_CL_STATS;i++)
 123         {
 124                 if (host_client->stats[i] != stats[i])
 125                 {
 126                         host_client->statsdeltabits[i >> 3] |= 1 << (i & 7);
 127                         host_client->stats[i] = stats[i];
 128                 }
 129         }
 130 }
 131
 132 // only a few stats are within the 32 stat limit of Quake, and most of them
 133 // are sent every frame in svc_clientdata messages, so we only send the
 134 // remaining ones here
 135 static const int sendquakestats[] =
 136 {
 137 // quake did not send these secrets/monsters stats in this way, but doing so
 138 // allows a mod to increase STAT_TOTALMONSTERS during the game, and ensures
 139 // that STAT_SECRETS and STAT_MONSTERS are always correct (even if a client
 140 // didn't receive an svc_foundsecret or svc_killedmonster), which may be most
 141 // valuable if randomly seeking around in a demo
 142 STAT_TOTALSECRETS, // never changes during game
 143 STAT_TOTALMONSTERS, // changes in some mods
 144 STAT_SECRETS, // this makes svc_foundsecret unnecessary
 145 STAT_MONSTERS, // this makes svc_killedmonster unnecessary
 146 STAT_VIEWHEIGHT, // sent just for FTEQW clients
 147 STAT_VIEWZOOM, // this rarely changes
 148 -1,
 149 };
 150
 151 void Protocol_WriteStatsReliable(void)
 152 {
 153         int i, j;
 154         if (!host_client->netconnection)
 155                 return;
 156         // detect changes in stats and write reliable messages
 157         // this only deals with 32 stats because the older protocols which use
 158         // this function can only cope with 32 stats,
 159         // they also do not support svc_updatestatubyte which was introduced in
 160         // DP6 protocol (except for QW)
 161         for (j = 0;sendquakestats[j] >= 0;j++)
 162         {
 163                 i = sendquakestats[j];
 164                 // check if this bit is set
 165                 if (host_client->statsdeltabits[i >> 3] & (1 << (i & 7)))
 166                 {
 167                         host_client->statsdeltabits[i >> 3] -= (1 << (i & 7));
 168                         // send the stat as a byte if possible
 169                         if (sv.protocol == PROTOCOL_QUAKEWORLD)
 170                         {
 171                                 if (host_client->stats[i] >= 0 && host_client->stats[i] < 256)
 172                                 {
 173                                         MSG_WriteByte(&host_client->netconnection->message, qw_svc_updatestat);
 174                                         MSG_WriteByte(&host_client->netconnection->message, i);
 175                                         MSG_WriteByte(&host_client->netconnection->message, host_client->stats[i]);
 176                                 }
 177                                 else
 178                                 {
 179                                         MSG_WriteByte(&host_client->netconnection->message, qw_svc_updatestatlong);
 180                                         MSG_WriteByte(&host_client->netconnection->message, i);
 181                                         MSG_WriteLong(&host_client->netconnection->message, host_client->stats[i]);
 182                                 }
 183                         }
 184                         else
 185                         {
 186                                 // this could make use of svc_updatestatubyte in DP6 and later
 187                                 // protocols but those protocols do not use this function
 188                                 MSG_WriteByte(&host_client->netconnection->message, svc_updatestat);
 189                                 MSG_WriteByte(&host_client->netconnection->message, i);
 190                                 MSG_WriteLong(&host_client->netconnection->message, host_client->stats[i]);
 191                         }
 192                 }
 193         }
 194 }