driAn
02585aed87
git-svn-id: svn://svn.code.sf.net/p/actiongame/code/trunk/ac@971 e016b1c5-ed68-44aa-a2f7-31cac88cffde
111 lines
3.3 KiB
C++
111 lines
3.3 KiB
C++
// misc useful functions used by the server
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#include "cube.h"
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// all network traffic is in 32bit ints, which are then compressed using the following simple scheme (assumes that most values are small).
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void putint(ucharbuf &p, int n)
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{
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if(n<128 && n>-127) p.put(n);
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else if(n<0x8000 && n>=-0x8000) { p.put(0x80); p.put(n); p.put(n>>8); }
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else { p.put(0x81); p.put(n); p.put(n>>8); p.put(n>>16); p.put(n>>24); }
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}
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int getint(ucharbuf &p)
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{
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int c = (char)p.get();
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if(c==-128) { int n = p.get(); n |= char(p.get())<<8; return n; }
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else if(c==-127) { int n = p.get(); n |= p.get()<<8; n |= p.get()<<16; return n|(p.get()<<24); }
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else return c;
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}
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// much smaller encoding for unsigned integers up to 28 bits, but can handle signed
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void putuint(ucharbuf &p, int n)
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{
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if(n < 0 || n >= (1<<21))
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{
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p.put(0x80 | (n & 0x7F));
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p.put(0x80 | ((n >> 7) & 0x7F));
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p.put(0x80 | ((n >> 14) & 0x7F));
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p.put(n >> 21);
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}
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else if(n < (1<<7)) p.put(n);
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else if(n < (1<<14))
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{
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p.put(0x80 | (n & 0x7F));
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p.put(n >> 7);
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}
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else
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{
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p.put(0x80 | (n & 0x7F));
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p.put(0x80 | ((n >> 7) & 0x7F));
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p.put(n >> 14);
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}
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}
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int getuint(ucharbuf &p)
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{
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int n = p.get();
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if(n & 0x80)
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{
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n += (p.get() << 7) - 0x80;
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if(n & (1<<14)) n += (p.get() << 14) - (1<<14);
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if(n & (1<<21)) n += (p.get() << 21) - (1<<21);
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if(n & (1<<28)) n |= 0xF0000000;
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}
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return n;
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}
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void sendstring(const char *t, ucharbuf &p)
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{
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while(*t) putint(p, *t++);
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putint(p, 0);
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}
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void getstring(char *text, ucharbuf &p, int len)
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{
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char *t = text;
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do
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{
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if(t>=&text[len]) { text[len-1] = 0; return; }
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if(!p.remaining()) { *t = 0; return; }
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*t = getint(p);
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}
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while(*t++);
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}
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const char *modenames[] =
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{
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"team deathmatch", "coopedit", "deathmatch", "survivor",
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"team survivor", "ctf", "pistol frenzy", "bot team deathmatch", "bot deathmatch", "last swiss standing",
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"one shot, one kill", "team one shot, one kill", "bot one shot, one skill"
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};
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const char *modestr(int n) { return (n>=0 && (size_t)n < sizeof(modenames)/sizeof(modenames[0])) ? modenames[n] : "unknown"; }
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char msgsizesl[] = // size inclusive message token, 0 for variable or not-checked sizes
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{
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SV_INITS2C, 5, SV_INITC2S, 0, SV_POS, 0, SV_TEXT, 0, SV_TEAMTEXT, 0, SV_SOUND, 2, SV_CDIS, 2,
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SV_GIBDIED, 2, SV_DIED, 2, SV_GIBDAMAGE, 4, SV_DAMAGE, 4, SV_SHOT, 9, SV_FRAGS, 2, SV_RESUME, 3,
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SV_TIMEUP, 2, SV_EDITENT, 10, SV_MAPRELOAD, 2, SV_ITEMACC, 2,
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SV_MAPCHANGE, 0, SV_ITEMSPAWN, 2, SV_ITEMPICKUP, 3, SV_DENIED, 2,
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SV_PING, 2, SV_PONG, 2, SV_CLIENTPING, 2, SV_GAMEMODE, 2,
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SV_EDITH, 7, SV_EDITT, 7, SV_EDITS, 6, SV_EDITD, 6, SV_EDITE, 6,
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SV_SENDMAP, 0, SV_RECVMAP, 1, SV_SERVMSG, 0, SV_ITEMLIST, 0, SV_WEAPCHANGE, 2,
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SV_MODELSKIN, 2,
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SV_FLAGPICKUP, 2, SV_FLAGDROP, 2, SV_FLAGRETURN, 2, SV_FLAGSCORE, 2, SV_FLAGRESET, 2, SV_FLAGINFO, 0, SV_FLAGS, 2, // EDIT: AH
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SV_ARENASPAWN, 0, SV_ARENAWIN, 0,
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SV_SETMASTER, 2, SV_SETMASTERLOGIN, 0, SV_MASTERINFO, 2, SV_MASTERCMD, 3,
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SV_FORCETEAM, 2, SV_AUTOTEAM, 2,
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SV_PWD, 0,
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SV_CLIENT, 0,
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-1
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};
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char msgsizelookup(int msg)
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{
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for(char *p = msgsizesl; *p>=0; p += 2) if(*p==msg) return p[1];
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return -1;
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}
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