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| author | kcwu <kcwu@63ad8ddf-47c3-0310-b6dd-a9e9d9715204> | 2004-10-08 02:12:55 +0800 |
|---|---|---|
| committer | kcwu <kcwu@63ad8ddf-47c3-0310-b6dd-a9e9d9715204> | 2004-10-08 02:12:55 +0800 |
| commit | 68b60cb8d7601ddafd322184a79cd3e4d11688dd (patch) | |
| tree | e2c3d0e1abf7d56082fd017702b5a9ddc0614f4f /mbbsd | |
| parent | 25712a5f0eea228f8bbe09257e8c1b15a50c0241 (diff) | |
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calculate chess ELO rating
only show rating in debug mode now
git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@2228 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
Diffstat (limited to 'mbbsd')
| -rw-r--r-- | mbbsd/Makefile | 1 | ||||
| -rw-r--r-- | mbbsd/chc.c | 33 | ||||
| -rw-r--r-- | mbbsd/talk.c | 5 |
3 files changed, 39 insertions, 0 deletions
diff --git a/mbbsd/Makefile b/mbbsd/Makefile index 124ae821..e2177d43 100644 --- a/mbbsd/Makefile +++ b/mbbsd/Makefile @@ -20,6 +20,7 @@ OBJS= admin.o announce.o args.o assess.o bbs.o board.o cache.o cal.o card.o\ CFLAGS+= -DMERGEBBS OBJS+= merge.o .endif +LDFLAGS+= -lm .SUFFIXES: .c .o .c.o: ../include/var.h diff --git a/mbbsd/chc.c b/mbbsd/chc.c index 7d36ce9d..06623a5f 100644 --- a/mbbsd/chc.c +++ b/mbbsd/chc.c @@ -1,4 +1,5 @@ /* $Id$ */ +#include <math.h> #include "bbs.h" #define CENTER(a, b) (((a) + (b)) >> 1) @@ -563,6 +564,7 @@ chcusr_put(userec_t *userec, chcusr_t *user) userec->chc_win = user->win; userec->chc_lose = user->lose; userec->chc_tie = user->tie; + userec->chess_elo_rating = user->rating; } static void @@ -572,6 +574,9 @@ chcusr_get(userec_t *userec, chcusr_t *user) user->win = userec->chc_win; user->lose = userec->chc_lose; user->tie = userec->chc_tie; + user->rating = userec->chess_elo_rating; + if(user->rating == 0) + user->rating = 1500; /* ELO initial value */ } static int @@ -754,6 +759,30 @@ myplay(int s, chcusr_t *user1, chcusr_t *user2, board_t board, board_t tmpbrd) return endgame; } +/* + * ELO rating system + * see http://www.wordiq.com/definition/ELO_rating_system + */ +static void +count_chess_elo_rating(chcusr_t *user1, chcusr_t *user2, double myres) +{ + double k; + double exp_res; + if(user1->rating < 1800) + k = 30; + else if(user1->rating < 2000) + k = 25; + else if(user1->rating < 2200) + k = 20; + else if(user1->rating < 2400) + k = 15; + else + k = 10; + + exp_res = 1.0/(1.0 + pow(10.0, (user2->rating-user1->rating)/400.0)); + user1->rating += (int)floor(k*(myres-exp_res)+0.5); +} + static void mainloop(int s, chcusr_t *user1, chcusr_t *user2, board_t board, play_func_t play_func[2]) { @@ -776,16 +805,20 @@ mainloop(int s, chcusr_t *user1, chcusr_t *user2, board_t board, play_func_t pla } if (chc_mode & CHC_VERSUS) { + /* XXX 不正常斷線目前不會更改 ELO rating */ if (endgame == 1) { strlcpy(chc_warnmsg, "對方認輸了!", sizeof(chc_warnmsg)); + count_chess_elo_rating(user1, user2, 1.0); user1->win++; currutmp->chc_win++; } else if (endgame == 2) { strlcpy(chc_warnmsg, "你認輸了!", sizeof(chc_warnmsg)); + count_chess_elo_rating(user1, user2, 0.0); user1->lose++; currutmp->chc_lose++; } else { strlcpy(chc_warnmsg, "和棋", sizeof(chc_warnmsg)); + count_chess_elo_rating(user1, user2, 0.5); user1->tie++; currutmp->chc_tie++; } diff --git a/mbbsd/talk.c b/mbbsd/talk.c index 66613e99..a85e3d75 100644 --- a/mbbsd/talk.c +++ b/mbbsd/talk.c @@ -1634,9 +1634,14 @@ descript(int show_mode, userinfo_t * uentp, time_t diff) uentp->five_lose, uentp->five_tie); return description; case 3: +#ifdef DEBUG + snprintf(description, sizeof(description), + "%d", uentp->chess_elo_rating); +#else snprintf(description, sizeof(description), "%3d/%3d/%3d", uentp->chc_win, uentp->chc_lose, uentp->chc_tie); +#endif return description; default: syslog(LOG_WARNING, "damn!!! what's wrong?? show_mode = %d", |