merge chc from my branch

git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@1170 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

1 files changed, 1030 insertions, 0 deletions

diff --git a/mbbsd/chc.c b/mbbsd/chc.c
new file mode 100644
index 00000000..fbd716a1
--- /dev/null
+++ b/mbbsd/chc.c
@@ -0,0 +1,1030 @@
+#include "bbs.h"
+
+#define CENTER(a, b)	(((a) + (b)) >> 1)
+#define CHC_TIMEOUT	300
+#define CHC_LOG		"chc_log"	/* log file name */
+
+extern userinfo_t *uip;
+
+typedef int     (*play_func_t) (int, chcusr_t *, chcusr_t *, board_t, board_t);
+
+typedef struct drc_t {
+    rc_t            from, to;
+}               drc_t;
+
+static rc_t	    chc_from, chc_to, chc_select, chc_cursor;
+static int	    chc_lefttime;
+static int	    chc_my, chc_turn, chc_selected, chc_firststep;
+static char	    chc_mode;
+static char	    chc_warnmsg[64];
+static char	    chc_ipass = 0, chc_hepass = 0;
+/* fp is for logging the step */
+static FILE        *fp = NULL;
+static board_t	   *chc_bp;
+static chc_act_list *act_list = NULL;
+
+
+/* some constant variable definition */
+
+static const char *turn_str[2] = {"黑的", "紅的"};
+
+static const char *num_str[10] = {
+    "", "一", "二", "三", "四", "五", "六", "七", "八", "九"
+};
+
+static const char *chess_str[2][8] = {
+    /* 0     1     2     3     4     5     6     7 */
+    {"  ", "將", "士", "象", "車", "馬", "包", "卒"},
+    {"  ", "帥", "仕", "相", "車", "傌", "炮", "兵"}
+};
+
+static const char *chess_brd[BRD_ROW * 2 - 1] = {
+    /* 0   1   2   3   4   5   6   7   8 */
+    "┌─┬─┬─┬─┬─┬─┬─┬─┐",	/* 0 */
+    "│  │  │  │＼│／│  │  │  │",
+    "├─┼─┼─┼─┼─┼─┼─┼─┤",	/* 1 */
+    "│  │  │  │／│＼│  │  │  │",
+    "├─┼─┼─┼─┼─┼─┼─┼─┤",	/* 2 */
+    "│  │  │  │  │  │  │  │  │",
+    "├─┼─┼─┼─┼─┼─┼─┼─┤",	/* 3 */
+    "│  │  │  │  │  │  │  │  │",
+    "├─┴─┴─┴─┴─┴─┴─┴─┤",	/* 4 */
+    "│  楚    河          漢    界  │",
+    "├─┬─┬─┬─┬─┬─┬─┬─┤",	/* 5 */
+    "│  │  │  │  │  │  │  │  │",
+    "├─┼─┼─┼─┼─┼─┼─┼─┤",	/* 6 */
+    "│  │  │  │  │  │  │  │  │",
+    "├─┼─┼─┼─┼─┼─┼─┼─┤",	/* 7 */
+    "│  │  │  │＼│／│  │  │  │",
+    "├─┼─┼─┼─┼─┼─┼─┼─┤",	/* 8 */
+    "│  │  │  │／│＼│  │  │  │",
+    "└─┴─┴─┴─┴─┴─┴─┴─┘"	/* 9 */
+};
+
+static char *hint_str[] = {
+    "  q      認輸離開",
+    "  p      要求和棋",
+    "方向鍵   移動遊標",
+    "Enter    選擇/移動"
+};
+
+/*
+ * Start of the network communication function.
+ */
+static int
+chc_recvmove(int s)
+{
+    drc_t           buf;
+
+    if (read(s, &buf, sizeof(buf)) != sizeof(buf))
+	return 0;
+    chc_from = buf.from, chc_to = buf.to;
+    return 1;
+}
+
+static int
+chc_sendmove(int s)
+{
+    drc_t           buf;
+
+    buf.from = chc_from, buf.to = chc_to;
+    if (write(s, &buf, sizeof(buf)) != sizeof(buf))
+	return 0;
+    return 1;
+}
+
+static void
+chc_broadcast(chc_act_list *p, board_t board){
+    while(p){
+	if (chc_sendmove(p->sock) < 0) {
+	    if (p->next->next == NULL)
+		p = NULL;
+	    else {
+		chc_act_list *tmp = p->next->next;
+		p->next = tmp;
+	    }
+	    free(p->next);
+	}
+	p = p->next;
+    }
+}
+
+static int
+chc_broadcast_recv(chc_act_list *act_list, board_t board){
+    if (!chc_recvmove(act_list->sock))
+	return 0;
+    chc_broadcast(act_list->next, board);
+    return 1;
+}
+
+static void
+chc_broadcast_send(chc_act_list *act_list, board_t board){
+    chc_broadcast(act_list, board);
+}
+
+/*
+ * End of the network communication function.
+ */
+
+/*
+ * Start of the drawing function.
+ */
+static void
+chc_movecur(int r, int c)
+{
+    move(r * 2 + 3, c * 4 + 4);
+}
+
+static char *
+getstep(board_t board, rc_t *from, rc_t *to)
+{
+    int             turn, fc, tc;
+    char           *dir;
+    static char	    buf[80];
+
+    turn = CHE_O(board[from->r][from->c]);
+    fc = (turn == (chc_my ^ 1) ? from->c + 1 : 9 - from->c);
+    tc = (turn == (chc_my ^ 1) ? to->c + 1 : 9 - to->c);
+    if (from->r == to->r)
+	dir = "平";
+    else {
+	if (from->c == to->c)
+	    tc = from->r - to->r;
+	if (tc < 0)
+	    tc = -tc;
+
+	if ((turn == (chc_my ^ 1) && to->r > from->r) ||
+	    (turn == chc_my && to->r < from->r))
+	    dir = "進";
+	else
+	    dir = "退";
+    }
+    sprintf(buf, "%s%s%s%s",
+	   chess_str[turn][CHE_P(board[from->r][from->c])],
+	   num_str[fc], dir, num_str[tc]);
+    return buf;
+}
+
+static void
+showstep(board_t board)
+{
+    int		    eatten;
+
+    prints("%s%s", CHE_O(board[chc_from.r][chc_from.c]) == 0 ? BLACK_COLOR : RED_COLOR, getstep(board, &chc_from, &chc_to));
+
+    eatten = board[chc_to.r][chc_to.c];
+    if (eatten)
+	prints("： %s%s",
+	       CHE_O(eatten) == 0 ? BLACK_COLOR : RED_COLOR,
+	       chess_str[CHE_O(eatten)][CHE_P(eatten)]);
+    prints("\033[m");
+}
+
+static void
+chc_drawline(board_t board, chcusr_t *user1, chcusr_t *user2, int line)
+{
+    int             i, j;
+
+    move(line, 0);
+    clrtoeol();
+    if (line == 0) {
+	prints("\033[1;46m   象棋對戰   \033[45m%30s VS %-20s%10s\033[m",
+	       user1->userid, user2->userid, chc_mode & CHC_WATCH ? "[觀棋模式]" : "");
+    } else if (line >= 3 && line <= 21) {
+	outs("   ");
+	for (i = 0; i < 9; i++) {
+	    j = board[RTL(line)][i];
+	    if ((line & 1) == 1 && j) {
+		if (chc_selected &&
+		    chc_select.r == RTL(line) && chc_select.c == i)
+		    prints("%s%s\033[m",
+			   CHE_O(j) == 0 ? BLACK_REVERSE : RED_REVERSE,
+			   chess_str[CHE_O(j)][CHE_P(j)]);
+		else
+		    prints("%s%s\033[m",
+			   CHE_O(j) == 0 ? BLACK_COLOR : RED_COLOR,
+			   chess_str[CHE_O(j)][CHE_P(j)]);
+	    } else
+		prints("%c%c", chess_brd[line - 3][i * 4],
+		       chess_brd[line - 3][i * 4 + 1]);
+	    if (i != 8)
+		prints("%c%c", chess_brd[line - 3][i * 4 + 2],
+		       chess_brd[line - 3][i * 4 + 3]);
+	}
+	outs("        ");
+
+	if (line >= 3 && line < 3 + (int)dim(hint_str)) {
+	    outs(hint_str[line - 3]);
+	} else if (line == SIDE_ROW) {
+	    prints("\033[1m你是%s%s\033[m",
+		   chc_my == 0 ? BLACK_COLOR : RED_COLOR,
+		   turn_str[chc_my]);
+	} else if (line == TURN_ROW) {
+	    prints("%s%s\033[m",
+		   TURN_COLOR,
+		   chc_my == chc_turn ? "輪到你下棋了" : "等待對方下棋");
+	} else if (line == STEP_ROW && !chc_firststep) {
+	    showstep(board);
+	} else if (line == TIME_ROW) {
+	    prints("剩餘時間 %d:%02d", chc_lefttime / 60, chc_lefttime % 60);
+	} else if (line == WARN_ROW) {
+	    outs(chc_warnmsg);
+	} else if (line == MYWIN_ROW) {
+	    prints("\033[1;33m%12.12s    "
+		   "\033[1;31m%2d\033[37m勝 "
+		   "\033[34m%2d\033[37m敗 "
+		   "\033[36m%2d\033[37m和\033[m",
+		   user1->userid,
+		   user1->win, user1->lose - 1, user1->tie);
+	} else if (line == HISWIN_ROW) {
+	    prints("\033[1;33m%12.12s    "
+		   "\033[1;31m%2d\033[37m勝 "
+		   "\033[34m%2d\033[37m敗 "
+		   "\033[36m%2d\033[37m和\033[m",
+		   user2->userid,
+		   user2->win, user2->lose - 1, user2->tie);
+	}
+    } else if (line == 2 || line == 22) {
+	outs("   ");
+	if (line == 2)
+	    for (i = 1; i <= 9; i++)
+		prints("%s  ", num_str[i]);
+	else
+	    for (i = 9; i >= 1; i--)
+		prints("%s  ", num_str[i]);
+    }
+}
+
+static void
+chc_redraw(chcusr_t *user1, chcusr_t *user2, board_t board)
+{
+    int             i;
+    for (i = 0; i <= 22; i++)
+	chc_drawline(board, user1, user2, i);
+}
+/*
+ * End of the drawing function.
+ */
+
+
+/*
+ * Start of the log function.
+ */
+int
+chc_log_open(chcusr_t *user1, chcusr_t *user2, char *file)
+{
+    char buf[128];
+    if ((fp = fopen(file, "w")) == NULL)
+	return -1;
+    sprintf(buf, "%s V.S. %s\n", user1->userid, user2->userid);
+    fputs(buf, fp);
+    return 0;
+}
+
+void
+chc_log_close(void)
+{
+    if (fp)
+	fclose(fp);
+}
+
+int
+chc_log(char *desc)
+{
+    if (fp)
+	return fputs(desc, fp);
+    return -1;
+}
+
+int
+chc_log_step(board_t board, rc_t *from, rc_t *to)
+{
+    char buf[80];
+    sprintf(buf, "  %s%s\033[m\n", CHE_O(board[from->r][from->c]) == 0 ? BLACK_COLOR : RED_COLOR, getstep(board, from, to));
+    return chc_log(buf);
+}
+
+static int
+chc_filter(struct dirent *dir)
+{
+    if (strcmp(dir->d_name, ".") == 0 || strcmp(dir->d_name, "..") == 0 )
+	return 0;
+    return strstr(dir->d_name, ".poem") != NULL;
+}
+
+int
+chc_log_poem(void)
+{
+    struct dirent **namelist;
+    int n;
+
+    n = scandir(BBSHOME"/etc/chess", &namelist, chc_filter, alphasort);
+    if (n < 0)
+	perror("scandir");
+    else {
+	char buf[80];
+	FILE *fp;
+	sprintf(buf, BBSHOME"/etc/chess/%s", namelist[rand() % n]->d_name);
+	if ((fp = fopen(buf, "r")) == NULL)
+	    return -1;
+
+	while(fgets(buf, sizeof(buf), fp) != NULL)
+	    chc_log(buf);
+	while(n--)
+	    free(namelist[n]);
+	free(namelist);
+	fclose(fp);
+    }
+    return 0;
+}
+/*
+ * End of the log function.
+ */
+
+
+/*
+ * Start of the rule function.
+ */
+
+static void
+chc_init_board(board_t board)
+{
+    memset(board, 0, sizeof(board_t));
+    board[0][4] = CHE(1, chc_my ^ 1);	/* 將 */
+    board[0][3] = board[0][5] = CHE(2, chc_my ^ 1);	/* 士 */
+    board[0][2] = board[0][6] = CHE(3, chc_my ^ 1);	/* 象 */
+    board[0][0] = board[0][8] = CHE(4, chc_my ^ 1);	/* 車 */
+    board[0][1] = board[0][7] = CHE(5, chc_my ^ 1);	/* 馬 */
+    board[2][1] = board[2][7] = CHE(6, chc_my ^ 1);	/* 包 */
+    board[3][0] = board[3][2] = board[3][4] =
+	board[3][6] = board[3][8] = CHE(7, chc_my ^ 1);	/* 卒 */
+
+    board[9][4] = CHE(1, chc_my);	/* 帥 */
+    board[9][3] = board[9][5] = CHE(2, chc_my);	/* 仕 */
+    board[9][2] = board[9][6] = CHE(3, chc_my);	/* 相 */
+    board[9][0] = board[9][8] = CHE(4, chc_my);	/* 車 */
+    board[9][1] = board[9][7] = CHE(5, chc_my);	/* 傌 */
+    board[7][1] = board[7][7] = CHE(6, chc_my);	/* 炮 */
+    board[6][0] = board[6][2] = board[6][4] =
+	board[6][6] = board[6][8] = CHE(7, chc_my);	/* 兵 */
+}
+
+static void
+chc_movechess(board_t board)
+{
+    board[chc_to.r][chc_to.c] = board[chc_from.r][chc_from.c];
+    board[chc_from.r][chc_from.c] = 0;
+}
+
+static int
+dist(rc_t from, rc_t to, int rowcol)
+{
+    int             d;
+
+    d = rowcol ? from.c - to.c : from.r - to.r;
+    return d > 0 ? d : -d;
+}
+
+static int
+between(board_t board, rc_t from, rc_t to, int rowcol)
+{
+    int             i, rtv = 0;
+
+    if (rowcol) {
+	if (from.c > to.c)
+	    i = from.c, from.c = to.c, to.c = i;
+	for (i = from.c + 1; i < to.c; i++)
+	    if (board[to.r][i])
+		rtv++;
+    } else {
+	if (from.r > to.r)
+	    i = from.r, from.r = to.r, to.r = i;
+	for (i = from.r + 1; i < to.r; i++)
+	    if (board[i][to.c])
+		rtv++;
+    }
+    return rtv;
+}
+
+static int
+chc_canmove(board_t board, rc_t from, rc_t to)
+{
+    int             i;
+    int             rd, cd, turn;
+
+    rd = dist(from, to, 0);
+    cd = dist(from, to, 1);
+    turn = CHE_O(board[from.r][from.c]);
+
+    /* general check */
+    if (board[to.r][to.c] && CHE_O(board[to.r][to.c]) == turn)
+	return 0;
+
+    /* individual check */
+    switch (CHE_P(board[from.r][from.c])) {
+    case 1:			/* 將 帥 */
+	if (!(rd == 1 && cd == 0) &&
+	    !(rd == 0 && cd == 1))
+	    return 0;
+	if ((turn == (chc_my ^ 1) && to.r > 2) ||
+	    (turn == chc_my && to.r < 7) ||
+	    to.c < 3 || to.c > 5)
+	    return 0;
+	break;
+    case 2:			/* 士 仕 */
+	if (!(rd == 1 && cd == 1))
+	    return 0;
+	if ((turn == (chc_my ^ 1) && to.r > 2) ||
+	    (turn == chc_my && to.r < 7) ||
+	    to.c < 3 || to.c > 5)
+	    return 0;
+	break;
+    case 3:			/* 象 相 */
+	if (!(rd == 2 && cd == 2))
+	    return 0;
+	if ((turn == (chc_my ^ 1) && to.r > 4) ||
+	    (turn == chc_my && to.r < 5))
+	    return 0;
+	/* 拐象腿 */
+	if (board[CENTER(from.r, to.r)][CENTER(from.c, to.c)])
+	    return 0;
+	break;
+    case 4:			/* 車 */
+	if (!(rd > 0 && cd == 0) &&
+	    !(rd == 0 && cd > 0))
+	    return 0;
+	if (between(board, from, to, rd == 0))
+	    return 0;
+	break;
+    case 5:			/* 馬 傌 */
+	if (!(rd == 2 && cd == 1) &&
+	    !(rd == 1 && cd == 2))
+	    return 0;
+	/* 拐馬腳 */
+	if (rd == 2) {
+	    if (board[CENTER(from.r, to.r)][from.c])
+		return 0;
+	} else {
+	    if (board[from.r][CENTER(from.c, to.c)])
+		return 0;
+	}
+	break;
+    case 6:			/* 包 炮 */
+	if (!(rd > 0 && cd == 0) &&
+	    !(rd == 0 && cd > 0))
+	    return 0;
+	i = between(board, from, to, rd == 0);
+	if ((i > 1) ||
+	    (i == 1 && !board[to.r][to.c]) ||
+	    (i == 0 && board[to.r][to.c]))
+	    return 0;
+	break;
+    case 7:			/* 卒 兵 */
+	if (!(rd == 1 && cd == 0) &&
+	    !(rd == 0 && cd == 1))
+	    return 0;
+	if (((turn == (chc_my ^ 1) && to.r < 5) ||
+	     (turn == chc_my && to.r > 4)) &&
+	    cd != 0)
+	    return 0;
+	if ((turn == (chc_my ^ 1) && to.r < from.r) ||
+	    (turn == chc_my && to.r > from.r))
+	    return 0;
+	break;
+    }
+    return 1;
+}
+
+static void
+findking(board_t board, int turn, rc_t * buf)
+{
+    int             i, r, c;
+
+    r = (turn == (chc_my ^ 1)) ? 0 : 7;
+    for (i = 0; i < 3; r++, i++)
+	for (c = 3; c < 6; c++)
+	    if (CHE_P(board[r][c]) == 1 &&
+		CHE_O(board[r][c]) == turn) {
+		buf->r = r, buf->c = c;
+		return;
+	    }
+}
+
+static int
+chc_iskfk(board_t board)
+{
+    rc_t            from, to;
+
+    findking(board, 0, &to);
+    findking(board, 1, &from);
+    if (from.c == to.c && between(board, from, to, 0) == 0)
+	return 1;
+    return 0;
+}
+
+static int
+chc_ischeck(board_t board, int turn)
+{
+    rc_t            from, to;
+
+    findking(board, turn, &to);
+    for (from.r = 0; from.r < BRD_ROW; from.r++)
+	for (from.c = 0; from.c < BRD_COL; from.c++)
+	    if (board[from.r][from.c] &&
+		CHE_O(board[from.r][from.c]) != turn)
+		if (chc_canmove(board, from, to))
+		    return 1;
+    return 0;
+}
+
+/*
+ * End of the rule function.
+ */
+
+static void
+chcusr_put(userec_t *userec, chcusr_t *user)
+{
+    userec->chc_win = user->win;
+    userec->chc_lose = user->lose;
+    userec->chc_tie = user->tie;
+}
+
+static void
+chcusr_get(userec_t *userec, chcusr_t *user)
+{
+    strlcpy(user->userid, userec->userid, sizeof(user->userid));
+    user->win = userec->chc_win;
+    user->lose = userec->chc_lose;
+    user->tie = userec->chc_tie;
+}
+
+static int
+hisplay(int s, chcusr_t *user1, chcusr_t *user2, board_t board, board_t tmpbrd)
+{
+    int             start_time;
+    int             endgame = 0, endturn = 0;
+
+    start_time = now;
+    while (!endturn) {
+	chc_lefttime = CHC_TIMEOUT - (now - start_time);
+	if (chc_lefttime < 0) {
+	    chc_lefttime = 0;
+
+	    /* to make him break out igetkey() */
+	    chc_from.r = -2;
+	    chc_broadcast_send(act_list, board);
+	}
+	chc_drawline(board, user1, user2, TIME_ROW);
+	move(1, 0);
+	oflush();
+	switch (igetkey()) {
+	case 'q':
+	    endgame = 2;
+	    endturn = 1;
+	    break;
+	case 'p':
+	    if (chc_hepass) {
+		chc_from.r = -1;
+		chc_broadcast_send(act_list, board);
+		endgame = 3;
+		endturn = 1;
+	    }
+	    break;
+	case I_OTHERDATA:
+	    if (!chc_broadcast_recv(act_list, board)) {	/* disconnect */
+		endturn = 1;
+		endgame = 1;
+	    } else {
+		if (chc_from.r == -1) {
+		    chc_hepass = 1;
+		    strlcpy(chc_warnmsg, "\033[1;33m要求和局!\033[m", sizeof(chc_warnmsg));
+		    chc_drawline(board, user1, user2, WARN_ROW);
+		} else {
+		    /* 座標變換
+		     *   (CHC_WATCH_PERSONAL 設定時
+		     *    表觀棋者看的棋局為單人打譜的棋局)
+		     *   棋盤需倒置的清況才要轉換
+		     */
+		    /* 1.如果在觀棋 且棋局是別人在打譜 且輪到你 或*/
+		    if ( ((chc_mode & CHC_WATCH) && (chc_mode & CHC_WATCH_PERSONAL)) ||
+			    /* 2.自己在打譜 */
+			    (chc_mode & CHC_PERSONAL) ||
+			    ((chc_mode & CHC_WATCH) && !chc_turn)
+			  )
+			; // do nothing
+		    else {
+			chc_from.r = 9 - chc_from.r, chc_from.c = 8 - chc_from.c;
+			chc_to.r = 9 - chc_to.r, chc_to.c = 8 - chc_to.c;
+		    }
+		    chc_cursor = chc_to;
+		    if (CHE_P(board[chc_to.r][chc_to.c]) == 1)
+			endgame = 2;
+		    endturn = 1;
+		    chc_hepass = 0;
+		    chc_drawline(board, user1, user2, STEP_ROW);
+		    chc_log_step(board, &chc_from, &chc_to);
+		    chc_movechess(board);
+		    chc_drawline(board, user1, user2, LTR(chc_from.r));
+		    chc_drawline(board, user1, user2, LTR(chc_to.r));
+		}
+	    }
+	    break;
+	}
+    }
+    return endgame;
+}
+
+static int
+myplay(int s, chcusr_t *user1, chcusr_t *user2, board_t board, board_t tmpbrd)
+{
+    int             ch, start_time;
+    int             endgame = 0, endturn = 0;
+
+    chc_ipass = 0, chc_selected = 0;
+    start_time = now;
+    chc_lefttime = CHC_TIMEOUT - (now - start_time);
+    bell();
+    while (!endturn) {
+	chc_drawline(board, user1, user2, TIME_ROW);
+	chc_movecur(chc_cursor.r, chc_cursor.c);
+	oflush();
+	ch = igetkey();
+	chc_lefttime = CHC_TIMEOUT - (now - start_time);
+	if (chc_lefttime < 0)
+	    ch = 'q';
+	switch (ch) {
+	case I_OTHERDATA:
+	    if (!chc_broadcast_recv(act_list, board)) {	/* disconnect */
+		endgame = 1;
+		endturn = 1;
+	    } else if (chc_from.r == -1 && chc_ipass) {
+		endgame = 3;
+		endturn = 1;
+	    }
+	    break;
+	case KEY_UP:
+	    chc_cursor.r--;
+	    if (chc_cursor.r < 0)
+		chc_cursor.r = BRD_ROW - 1;
+	    break;
+	case KEY_DOWN:
+	    chc_cursor.r++;
+	    if (chc_cursor.r >= BRD_ROW)
+		chc_cursor.r = 0;
+	    break;
+	case KEY_LEFT:
+	    chc_cursor.c--;
+	    if (chc_cursor.c < 0)
+		chc_cursor.c = BRD_COL - 1;
+	    break;
+	case KEY_RIGHT:
+	    chc_cursor.c++;
+	    if (chc_cursor.c >= BRD_COL)
+		chc_cursor.c = 0;
+	    break;
+	case 'q':
+	    endgame = 2;
+	    endturn = 1;
+	    break;
+	case 'p':
+	    chc_ipass = 1;
+	    chc_from.r = -1;
+	    chc_broadcast_send(act_list, board);
+	    strlcpy(chc_warnmsg, "\033[1;33m要求和棋!\033[m", sizeof(chc_warnmsg));
+	    chc_drawline(board, user1, user2, WARN_ROW);
+	    bell();
+	    break;
+	case '\r':
+	case '\n':
+	case ' ':
+	    if (chc_selected) {
+		if (chc_cursor.r == chc_select.r &&
+		    chc_cursor.c == chc_select.c) {
+		    chc_selected = 0;
+		    chc_drawline(board, user1, user2, LTR(chc_cursor.r));
+		} else if (chc_canmove(board, chc_select, chc_cursor)) {
+		    if (CHE_P(board[chc_cursor.r][chc_cursor.c]) == 1)
+			endgame = 1;
+		    chc_from = chc_select;
+		    chc_to = chc_cursor;
+		    if (!endgame) {
+			memcpy(tmpbrd, board, sizeof(board_t));
+			chc_movechess(tmpbrd);
+		    }
+		    if (endgame || !chc_iskfk(tmpbrd)) {
+			chc_drawline(board, user1, user2, STEP_ROW);
+			chc_log_step(board, &chc_from, &chc_to);
+			chc_movechess(board);
+			chc_broadcast_send(act_list, board);
+			chc_selected = 0;
+			chc_drawline(board, user1, user2, LTR(chc_from.r));
+			chc_drawline(board, user1, user2, LTR(chc_to.r));
+			endturn = 1;
+		    } else {
+			strlcpy(chc_warnmsg, "\033[1;33m不可以王見王\033[m", sizeof(chc_warnmsg));
+			bell();
+			chc_drawline(board, user1, user2, WARN_ROW);
+		    }
+		}
+	    } else if (board[chc_cursor.r][chc_cursor.c] &&
+		     CHE_O(board[chc_cursor.r][chc_cursor.c]) == chc_turn) {
+		chc_selected = 1;
+		chc_select = chc_cursor;
+		chc_drawline(board, user1, user2, LTR(chc_cursor.r));
+	    }
+	    break;
+	}
+    }
+    return endgame;
+}
+
+static void
+mainloop(int s, chcusr_t *user1, chcusr_t *user2, board_t board, play_func_t play_func[2])
+{
+    int             endgame;
+    char	    buf[80];
+    board_t         tmpbrd;
+
+    if (!(chc_mode & CHC_WATCH))
+	chc_turn = 1;
+    for (endgame = 0; !endgame; chc_turn ^= 1) {
+	chc_firststep = 0;
+	chc_drawline(board, user1, user2, TURN_ROW);
+	if (chc_ischeck(board, chc_turn)) {
+	    strlcpy(chc_warnmsg, "\033[1;31m將軍!\033[m", sizeof(chc_warnmsg));
+	    bell();
+	} else
+	    chc_warnmsg[0] = 0;
+	chc_drawline(board, user1, user2, WARN_ROW);
+	endgame = play_func[chc_turn] (s, user1, user2, board, tmpbrd);
+    }
+
+    if (chc_mode & CHC_VERSUS) {
+	if (endgame == 1) {
+	    strlcpy(chc_warnmsg, "對方認輸了!", sizeof(chc_warnmsg));
+	    user1->win++;
+	    currutmp->chc_win++;
+	} else if (endgame == 2) {
+	    strlcpy(chc_warnmsg, "你認輸了!", sizeof(chc_warnmsg));
+	    user1->lose++;
+	    currutmp->chc_lose++;
+	} else {
+	    strlcpy(chc_warnmsg, "和棋", sizeof(chc_warnmsg));
+	    user1->tie++;
+	    currutmp->chc_tie++;
+	}
+	user1->lose--;
+	chcusr_put(&cuser, user1);
+	passwd_update(usernum, &cuser);
+    }
+    else if (chc_mode & CHC_WATCH) {
+	strlcpy(chc_warnmsg, "結束觀棋", sizeof(chc_warnmsg));
+    }
+    else {
+	strlcpy(chc_warnmsg, "結束打譜", sizeof(chc_warnmsg));
+    }
+
+    chc_log("=> ");
+    if (endgame == 3)
+	chc_log("和局");
+    else{
+	sprintf(buf, "%s勝\n", chc_my && endgame == 1 ? "紅" : "黑");
+	chc_log(buf);
+    }
+
+    chc_drawline(board, user1, user2, WARN_ROW);
+    bell();
+    oflush();
+}
+
+static void
+chc_init_play_func(chcusr_t *user1, chcusr_t *user2, play_func_t play_func[2])
+{
+    char	    userid[2][IDLEN + 1];
+
+    if (chc_mode & CHC_PERSONAL) {
+	strlcpy(userid[0], cuser.userid, sizeof(userid[0]));
+	strlcpy(userid[1], cuser.userid, sizeof(userid[1]));
+	play_func[0] = play_func[1] = myplay;
+    }
+    else if (chc_mode & CHC_WATCH) {
+	userinfo_t *uinfo = search_ulist_userid(currutmp->mateid);
+	strlcpy(userid[0], uinfo->userid, sizeof(userid[0]));
+	strlcpy(userid[1], uinfo->mateid, sizeof(userid[1]));
+	play_func[0] = play_func[1] = hisplay;
+    }
+    else {
+	strlcpy(userid[0], cuser.userid, sizeof(userid[0]));
+	strlcpy(userid[1], currutmp->mateid, sizeof(userid[1]));
+	play_func[chc_my] = myplay;
+	play_func[chc_my ^ 1] = hisplay;
+    }
+
+    getuser(userid[0]);
+    chcusr_get(&xuser, user1);
+    getuser(userid[1]);
+    chcusr_get(&xuser, user2);
+}
+
+static void
+chc_watch_request(int signo)
+{
+    if (!(currstat & CHC))
+	return;
+    chc_act_list *tmp;
+    for(tmp = act_list; tmp->next != NULL; tmp = tmp->next);
+    tmp->next = (chc_act_list *)malloc(sizeof(chc_act_list));
+    tmp = tmp->next;
+    tmp->sock = reply_connection_request(uip);
+    if (tmp->sock < 0)
+	return;
+    tmp->next = NULL;
+    write(tmp->sock, chc_bp, sizeof(board_t));
+    write(tmp->sock, &chc_my, sizeof(chc_my));
+    write(tmp->sock, &chc_turn, sizeof(chc_turn));
+    write(tmp->sock, &currutmp->turn, sizeof(currutmp->turn));
+    write(tmp->sock, &chc_firststep, sizeof(chc_firststep));
+    write(tmp->sock, &chc_mode, sizeof(chc_mode));
+}
+
+static void
+chc_init(int s, chcusr_t *user1, chcusr_t *user2, board_t board, play_func_t play_func[2])
+{
+    userinfo_t     *my = currutmp;
+
+    setutmpmode(CHC);
+    clear();
+    chc_warnmsg[0] = 0;
+
+    /* 從不同來源初始化各個變數 */
+    if (!(chc_mode & CHC_WATCH)) {
+	if (chc_mode & CHC_PERSONAL)
+	    chc_my = 1;
+	else
+	    chc_my = my->turn;
+	chc_firststep = 1;
+	chc_init_board(board);
+	chc_cursor.r = 9, chc_cursor.c = 0;
+    }
+    else {
+	char mode;
+	read(s, board, sizeof(board_t));
+	read(s, &chc_my, sizeof(chc_my));
+	read(s, &chc_turn, sizeof(chc_turn));
+	read(s, &my->turn, sizeof(my->turn));
+	read(s, &chc_firststep, sizeof(chc_firststep));
+	read(s, &mode, sizeof(mode));
+	if (mode & CHC_PERSONAL)
+	    chc_mode |= CHC_WATCH_PERSONAL;
+    }
+
+    act_list = (chc_act_list *)malloc(sizeof(*act_list));
+    act_list->sock = s;
+    act_list->next = 0;
+
+    chc_init_play_func(user1, user2, play_func);
+
+    chc_redraw(user1, user2, board);
+    add_io(s, 0);
+
+    signal(SIGUSR1, chc_watch_request);
+
+    if (my->turn && !(chc_mode & CHC_WATCH))
+	chc_broadcast_recv(act_list, board);
+
+    user1->lose++;
+
+    if (chc_mode & CHC_VERSUS) {
+	passwd_query(usernum, &xuser);
+	chcusr_put(&xuser, user1);
+	passwd_update(usernum, &xuser);
+    }
+
+    if (!my->turn) {
+	if (!(chc_mode & CHC_WATCH))
+	    chc_broadcast_send(act_list, board);
+    	user2->lose++;
+    }
+    chc_redraw(user1, user2, board);
+}
+
+void
+chc(int s, int mode)
+{
+    chcusr_t	    user1, user2;
+    play_func_t     play_func[2];
+    board_t	    board;
+    char	    mode0 = currutmp->mode;
+    char	    file[80];
+
+    signal(SIGUSR1, SIG_IGN);
+
+    chc_mode = mode;
+    chc_bp = &board;
+
+    chc_init(s, &user1, &user2, board, play_func);
+    
+    setuserfile(file, CHC_LOG);
+    if (chc_log_open(&user1, &user2, file) < 0)
+	vmsg("無法紀錄棋局");
+    
+    mainloop(s, &user1, &user2, board, play_func);
+
+    /* close these fd */
+    if (chc_mode & CHC_PERSONAL)
+	act_list = act_list->next;
+    while(act_list){
+	close(act_list->sock);
+	act_list = act_list->next;
+    }
+
+    add_io(0, 0);
+    if (chc_my)
+	pressanykey();
+
+    currutmp->mode = mode0;
+
+    if (getans("是否將棋譜寄回信箱？[N/y]") == 'y') {
+	char title[80];
+	sprintf(title, "%s V.S. %s", user1.userid, user2.userid);
+	chc_log("\n--\n\n");
+	chc_log_poem();
+	chc_log_close();
+	mail_id(cuser.userid, title, file, "[楚河漢界]");
+    }
+    else
+	chc_log_close();
+    signal(SIGUSR1, talk_request);
+}
+
+static userinfo_t *
+chc_init_utmp(void)
+{
+    char            uident[16];
+    userinfo_t	   *uin;
+
+    stand_title("楚河漢界之爭");
+    generalnamecomplete(msg_uid, uident, sizeof(uident),
+			SHM->UTMPnumber,
+			completeutmp_compar,
+			completeutmp_permission,
+			completeutmp_getname);
+    if (uident[0] == '\0')
+	return NULL;
+
+    if ((uin = search_ulist_userid(uident)) == NULL)
+	return NULL;
+
+    uin->sig = SIG_CHC;
+    return uin;
+}
+
+int
+chc_main(void)
+{
+    userinfo_t     *uin;
+    
+    if ((uin = chc_init_utmp()) == NULL)
+	return -1;
+    uin->turn = 1;
+    currutmp->turn = 0;
+    strlcpy(uin->mateid, currutmp->userid, sizeof(uin->mateid));
+    strlcpy(currutmp->mateid, uin->userid, sizeof(currutmp->mateid));
+    
+    my_talk(uin, friend_stat(currutmp, uin), 'c');
+    return 0;
+}
+
+int
+chc_personal(void)
+{
+    chc(0, CHC_PERSONAL);
+    return 0;
+}
+
+int
+chc_watch(void)
+{
+    int 	    sock, msgsock;
+    userinfo_t     *uin;
+
+    if ((uin = chc_init_utmp()) == NULL)
+	return -1;
+
+    if (uin->uid == currutmp->uid || uin->mode != CHC)
+	return -1;
+
+    if ((sock = make_connection_to_somebody(uin, 10)) < 0) {
+	vmsg("無法建立連線");
+	return -1;
+    }
+    msgsock = accept(sock, (struct sockaddr *) 0, (socklen_t *) 0);
+    close(sock);
+    if (msgsock < 0)
+	return -1;
+
+    strlcpy(currutmp->mateid, uin->userid, sizeof(currutmp->mateid));
+    chc(msgsock, CHC_WATCH);
+    close(msgsock);
+    return 0;
+}