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/* $Id$ */
#include "bbs.h"
#include "gomo.h"
#define QCAST int (*)(const void *, const void *)
#define BOARD_LINE_ON_SCREEN(X) ((X) + 2)
static const char* turn_color[] = { ANSI_COLOR(30;43), ANSI_COLOR(37;43) };
enum Turn {
WHT = 0,
BLK
};
typedef struct {
ChessStepType type; /* necessary one */
int color;
rc_t loc;
} gomo_step_t;
typedef char board_t[BRDSIZ][BRDSIZ];
typedef char (*board_p)[BRDSIZ];
#if 0
#define move(y,x) move(y, (x) + ((y) < 2 || (y) > 16 ? 0 : \
(x) > 35 ? 11 : 8))
#endif
static void gomo_init_user(const userinfo_t* uinfo, ChessUser* user);
static void gomo_init_board(board_t board);
static void gomo_drawline(const ChessInfo* info, int line);
static void gomo_movecur(int r, int c);
static void gomo_prepare_play(ChessInfo* info);
static int gomo_select(ChessInfo* info, rc_t location,
ChessGameResult* result);
static void gomo_prepare_step(ChessInfo* info, const gomo_step_t* step);
static int gomo_apply_step(board_t board, const gomo_step_t* step);
static void gomo_drawstep(ChessInfo* info, const gomo_step_t* step);
static void gomo_gameend(ChessInfo* info, ChessGameResult result);
static void gomo_genlog(ChessInfo* info, FILE* fp, ChessGameResult result);
ChessActions gomo_actions = {
&gomo_init_user,
(void (*)(void*)) &gomo_init_board,
&gomo_drawline,
&gomo_movecur,
&gomo_prepare_play,
&gomo_select,
(void (*)(ChessInfo*, const void*)) &gomo_prepare_step,
(int (*)(void*, const void*)) &gomo_apply_step,
(void (*)(ChessInfo*, const void*)) &gomo_drawstep,
&gomo_gameend,
&gomo_genlog
};
ChessConstants gomo_constants = {
sizeof(gomo_step_t),
MAX_TIME,
BRDSIZ,
BRDSIZ,
"五子棋",
"photo_fivechess",
#ifdef GLOBAL_FIVECHESS_LOG
GLOBAL_FIVECHESS_LOG,
#else
NULL,
#endif
{ ANSI_COLOR(37;43), ANSI_COLOR(30;43) },
{ "白棋", "黑棋, 有禁手" },
};
/* pattern and advance map */
static int
intrevcmp(const void *a, const void *b)
{
return (*(int *)b - *(int *)a);
}
// 以 (x,y) 為起點, 方向 (dx,dy), 傳回以 bit 表示相鄰哪幾格有子
// 如 10111 表示該方向相鄰 1,2,3 有子, 4 空地
// 最高位 1 表示對方的子, 或是牆
/* x,y: 0..BRDSIZ-1 ; color: CBLACK,CWHITE ; dx,dy: -1,0,+1 */
static int
gomo_getindex(board_t ku, int x, int y, int color, int dx, int dy)
{
int i, k, n;
for (n = -1, i = 0, k = 1; i < 5; i++, k*=2) {
x += dx;
y += dy;
if ((x < 0) || (x >= BRDSIZ) || (y < 0) || (y >= BRDSIZ)) {
n += k;
break;
} else if (ku[x][y] != BBLANK) {
n += k;
if (ku[x][y] != color)
break;
}
}
if (i >= 5)
n += k;
return n;
}
ChessGameResult
chkwin(int style, int limit)
{
if (style == 0x0c)
return CHESS_RESULT_WIN;
else if (limit == 0) {
if (style == 0x0b)
return CHESS_RESULT_WIN;
return CHESS_RESULT_CONTINUE;
}
if ((style < 0x0c) && (style > 0x07))
return CHESS_RESULT_LOST;
return CHESS_RESULT_CONTINUE;
}
static int getstyle(board_t ku, int x, int y, int color, int limit);
/* x,y: 0..BRDSIZ-1 ; color: CBLACK,CWHITE ; limit:1,0 ; dx,dy: 0,1 */
static int
dirchk(board_t ku, int x, int y, int color, int limit, int dx, int dy)
{
int le, ri, loc, style = 0;
le = gomo_getindex(ku, x, y, color, -dx, -dy);
ri = gomo_getindex(ku, x, y, color, dx, dy);
loc = (le > ri) ? (((le * (le + 1)) >> 1) + ri) :
(((ri * (ri + 1)) >> 1) + le);
style = pat_gomoku[loc];
if (limit == 0)
return (style & 0x0f);
style >>= 4;
if ((style == 3) || (style == 2)) {
int i, n = 0, tmp, nx, ny;
n = adv_gomoku[loc / 2];
if(loc%2==0)
n/=16;
else
n%=16;
ku[x][y] = color;
for (i = 0; i < 2; i++) {
if ((tmp = (i == 0) ? (-(n >> 2)) : (n & 3)) != 0) {
nx = x + (le > ri ? 1 : -1) * tmp * dx;
ny = y + (le > ri ? 1 : -1) * tmp * dy;
if ((dirchk(ku, nx, ny, color, 0, dx, dy) == 0x06) &&
(chkwin(getstyle(ku, nx, ny, color, limit), limit) >= 0))
break;
}
}
if (i >= 2)
style = 0;
ku[x][y] = BBLANK;
}
return style;
}
/* 例外=F 錯誤=E 有子=D 連五=C 連六=B 雙四=A 四四=9 三三=8 */
/* 四三=7 活四=6 斷四=5 死四=4 活三=3 斷三=2 保留=1 無效=0 */
/* x,y: 0..BRDSIZ-1 ; color: CBLACK,CWHITE ; limit: 1,0 */
static int
getstyle(board_t ku, int x, int y, int color, int limit)
{
int i, j, dir[4], style;
if ((x < 0) || (x >= BRDSIZ) || (y < 0) || (y >= BRDSIZ))
return 0x0f;
if (ku[x][y] != BBLANK)
return 0x0d;
// (-1,1), (0,1), (1,0), (1,1)
for (i = 0; i < 4; i++)
dir[i] = dirchk(ku, x, y, color, limit, i ? (i >> 1) : -1, i ? (i & 1) : 1);
qsort(dir, 4, sizeof(int), (QCAST)intrevcmp);
if ((style = dir[0]) >= 2) {
for (i = 1, j = 6 + (limit ? 1 : 0); i < 4; i++) {
if ((style > j) || (dir[i] < 2))
break;
if (dir[i] > 3)
style = 9;
else if ((style < 7) && (style > 3))
style = 7;
else
style = 8;
}
}
return style;
}
static char*
gomo_move_warn(int style, char buf[])
{
char *xtype[] = {
ANSI_COLOR(1;31) "跳三" ANSI_RESET,
ANSI_COLOR(1;31) "活三" ANSI_RESET,
ANSI_COLOR(1;31) "死四" ANSI_RESET,
ANSI_COLOR(1;31) "跳四" ANSI_RESET,
ANSI_COLOR(1;31) "活四" ANSI_RESET,
ANSI_COLOR(1;31) "四三" ANSI_RESET,
ANSI_COLOR(1;31) "雙三" ANSI_RESET,
ANSI_COLOR(1;31) "雙四" ANSI_RESET,
ANSI_COLOR(1;31) "雙四" ANSI_RESET,
ANSI_COLOR(1;31) "連六" ANSI_RESET,
ANSI_COLOR(1;31) "連五" ANSI_RESET
};
if (style > 1 && style < 13)
return strcpy(buf, xtype[style - 2]);
else
return NULL;
}
static void
gomoku_usr_put(userec_t* userec, const ChessUser* user)
{
userec->five_win = user->win;
userec->five_lose = user->lose;
userec->five_tie = user->tie;
}
static char*
gomo_getstep(const gomo_step_t* step, char buf[])
{
const static char* const ColName = "ABCDEFGHIJKLMN";
const static char* const RawName = "151413121110987654321";
const static int ansi_length = sizeof(ANSI_COLOR(30;43)) - 1;
strcpy(buf, turn_color[step->color]);
buf[ansi_length ] = ColName[step->loc.c * 2];
buf[ansi_length + 1] = ColName[step->loc.c * 2 + 1];
buf[ansi_length + 2] = RawName[step->loc.r * 2];
buf[ansi_length + 3] = RawName[step->loc.r * 2 + 1];
strcpy(buf + ansi_length + 4, ANSI_RESET);
return buf;
}
static void
gomo_init_user(const userinfo_t* uinfo, ChessUser* user)
{
strlcpy(user->userid, uinfo->userid, sizeof(user->userid));
user->win = uinfo->five_win;
user->lose = uinfo->five_lose;
user->tie = uinfo->five_tie;
}
static void
gomo_init_board(board_t board)
{
memset(board, 0xff, sizeof(board_t));
}
static void
gomo_drawline(const ChessInfo* info, int line)
{
const static char* const BoardPic[] = {
"┌", "┬", "┐",
"├", "┼", "┤",
"└", "┴", "┘"
};
const static int BoardPicIndex[] =
{ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2 };
board_p board = (board_p) info->board;
move(line, 0);
clrtoeol();
if (line == 0) {
prints(ANSI_COLOR(1;46) " 五子棋對戰 " ANSI_COLOR(45)
"%30s VS %-20s%10s" ANSI_RESET,
info->user1.userid, info->user2.userid,
info->mode == CHESS_MODE_WATCH ? "[觀棋模式]" : "");
} else if (line == 1) {
outs(" A B C D E F G H I J K L M N");
} else if (line >= 2 && line <= 16) {
const int board_line = line - 2;
const char* const* const pics =
board_line == 0 ? &BoardPic[0] :
board_line == 14 ? &BoardPic[6] : &BoardPic[3];
int i;
prints("%3d" ANSI_COLOR(30;43), 17 - line);
for (i = 0; i < 15; ++i)
if (board[board_line][i] == -1)
outs(pics[BoardPicIndex[i]]);
else
outs(bw_chess[(int) board[board_line][i]]);
outs(ANSI_RESET);
} else if (line >= 17 && line <= 23)
prints("%33s", "");
ChessDrawExtraInfo(info, line);
}
static void
gomo_movecur(int r, int c)
{
move(r + 2, c * 2 + 3);
}
static void
gomo_prepare_play(ChessInfo* info)
{
if (!gomo_move_warn(*(int*) info->tag, info->warnmsg))
info->warnmsg[0] = 0;
}
static int
gomo_select(ChessInfo* info, rc_t location, ChessGameResult* result)
{
board_p board = (board_p) info->board;
gomo_step_t step;
if(board[location.r][location.c] != BBLANK)
return 0;
*(int*) info->tag = getstyle(board, location.r, location.c,
info->turn, info->turn == BLK);
*result = chkwin(*(int*) info->tag, info->turn == BLK);
board[location.r][location.c] = info->turn;
step.type = CHESS_STEP_NORMAL;
step.color = info->turn;
step.loc = location;
gomo_getstep(&step, info->last_movestr);
ChessHistoryAppend(info, &step);
ChessStepSend(info, &step);
gomo_drawstep(info, &step);
return 1;
}
static void
gomo_prepare_step(ChessInfo* info, const gomo_step_t* step)
{
if (step->type == CHESS_STEP_NORMAL) {
gomo_getstep(step, info->last_movestr);
*(int*) info->tag = getstyle(info->board, step->loc.r, step->loc.c,
step->color, step->color == BLK);
}
}
static int
gomo_apply_step(board_t board, const gomo_step_t* step)
{
int style;
style = getstyle(board, step->loc.r, step->loc.c,
step->color, step->color == BLK);
board[step->loc.r][step->loc.c] = step->color;
return (chkwin(style, step->color == BLK) != CHESS_RESULT_CONTINUE);
}
static void
gomo_drawstep(ChessInfo* info, const gomo_step_t* step)
{
ChessDrawLine(info, BOARD_LINE_ON_SCREEN(step->loc.r));
}
static void
gomo_gameend(ChessInfo* info, ChessGameResult result)
{
if (info->mode == CHESS_MODE_VERSUS) {
ChessUser* const user1 = &info->user1;
/* ChessUser* const user2 = &info->user2; */
user1->lose--;
if (result == CHESS_RESULT_WIN) {
user1->win++;
currutmp->five_win++;
} else if (result == CHESS_RESULT_LOST) {
user1->lose++;
currutmp->five_lose++;
} else {
user1->tie++;
currutmp->five_tie++;
}
cuser.five_win = user1->win;
cuser.five_lose = user1->lose;
cuser.five_tie = user1->tie;
passwd_update(usernum, &cuser);
}
}
static void
gomo_genlog(ChessInfo* info, FILE* fp, ChessGameResult result)
{
const int nStep = info->history.used;
int i;
for (i = 1; i <= 18; i++)
fprintf(fp, "%.*s\n", big_picture[i].len, big_picture[i].data);
fprintf(fp, "<gomokulog>\nblack:%s\nwhite:%s\n",
info->myturn ? info->user1.userid : info->user2.userid,
info->myturn ? info->user2.userid : info->user1.userid);
for (i = 0; i < nStep; ++i) {
const gomo_step_t* const step =
(const gomo_step_t*) ChessHistoryRetrieve(info, i);
if (step->type == CHESS_STEP_NORMAL)
fprintf(fp, "[%2d]%s ==> %c%-5d", i + 1, bw_chess[step->color],
'A' + step->loc.c, 15 - step->loc.r);
else
break;
if (i % 2)
fputc('\n', fp);
}
if (i % 2)
fputc('\n', fp);
fputs("</gomokulog>\n", fp);
}
void
gomoku(int s, ChessGameMode mode)
{
ChessInfo* info = NewChessInfo(&gomo_actions, &gomo_constants, s, mode);
board_t board;
int tag;
gomo_init_board(board);
tag = 0;
info->board = board;
info->tag = &tag;
info->cursor.r = 7;
info->cursor.c = 7;
if (info->mode == CHESS_MODE_VERSUS) {
/* Assume that info->user1 is me. */
info->user1.lose++;
passwd_query(usernum, &cuser);
gomoku_usr_put(&cuser, &info->user1);
passwd_update(usernum, &cuser);
}
if (mode == CHESS_MODE_WATCH)
setutmpmode(CHESSWATCHING);
else
setutmpmode(M_FIVE);
currutmp->sig = SIG_GOMO;
ChessPlay(info);
DeleteChessInfo(info);
}
int
gomoku_main(void)
{
return ChessStartGame('f', SIG_GOMO, "五子棋");
}
int
gomoku_personal(void)
{
gomoku(0, CHESS_MODE_PERSONAL);
return 0;
}
int
gomoku_watch(void)
{
return ChessWatchGame(&gomoku, M_FIVE, "五子棋");
}
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