1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
|
/*
* Entertain plugin — chess_cmd.c
* /chess command handler (join/leave/list/move/resign/draw/clear/status/board).
*/
#include "entertain_chess.h"
#include "hybbx/session.h"
#include "hybbx/service.h"
#include "hybbx/command.h"
#include <stdio.h>
#include <string.h>
#include <strings.h>
/* Forward declaration */
hybbx_result_t entertain_cmd_chess(struct hybbx_service *service,
struct hybbx_session *session,
const struct hybbx_parsed_command *cmd);
static int ieq(const char *a, const char *b)
{
if (!a || !b) return 0;
while (*a && *b) {
char ca = (*a >= 'A' && *a <= 'Z') ? *a + 32 : *a;
char cb = (*b >= 'A' && *b <= 'Z') ? *b + 32 : *b;
if (ca != cb) return 0;
a++; b++;
}
return *a == *b;
}
hybbx_result_t entertain_cmd_chess(struct hybbx_service *service,
struct hybbx_session *session,
const struct hybbx_parsed_command *cmd)
{
const char *sub;
char line[128];
(void)service;
if (!hybbx_session_logged_in(session)) {
hybbx_session_write_line(session, "Log in to play chess.");
return HYBBX_ERR_DENIED;
}
sub = (cmd->argc >= 1) ? cmd->argv[0] : "help";
/* ── help ──────────────────────────────────────────────── */
if (ieq(sub, "help") || ieq(sub, "?")) {
hybbx_session_write_line(session, "Chess commands:");
hybbx_session_write_line(session, " /chess new - Create game (you are White)");
hybbx_session_write_line(session, " /chess join [id] - Join game as Black");
hybbx_session_write_line(session, " /chess watch [id] - Spectate");
hybbx_session_write_line(session, " /chess board - Show board");
hybbx_session_write_line(session, " /chess move e2 e4 - Move (alias: /mv e2 e4)");
hybbx_session_write_line(session, " /chess resign - Resign");
hybbx_session_write_line(session, " /chess draw - Offer draw");
hybbx_session_write_line(session, " /chess list - List games + boards");
hybbx_session_write_line(session, " /chess leave - Stop watching");
hybbx_session_write_line(session, " /chess clear - Clear game history");
snprintf(line, sizeof(line), "Board refreshes every %ds for all.", CHESS_REFRESH_SEC);
hybbx_session_write_line(session, line);
return HYBBX_OK;
}
/* ── status ────────────────────────────────────────────── */
if (ieq(sub, "status")) {
snprintf(line, sizeof(line), "Chess: %u max games", chess_max_games());
hybbx_session_write_line(session, line);
return HYBBX_OK;
}
/* ── list ──────────────────────────────────────────────── */
if (ieq(sub, "list") || ieq(sub, "ls")) {
unsigned found = 0;
hybbx_session_write_line(session, "Chess games:");
for (unsigned i = 0; i < chess_max_games(); i++) {
chess_game_t *g = chess_get_game(i);
if (!g) continue;
const char *st = (g->result != CHESS_RESULT_NONE) ? "finished" :
(!g->black_session) ? "waiting" : "playing";
snprintf(line, sizeof(line), " [%s] %s(W) vs %s(B) %s move %u",
g->game_id, g->white_name,
g->black_session ? g->black_name : "...",
st, g->move_number);
hybbx_session_write_line(session, line);
chess_send_board(g, session);
if (g->spectator_count > 0) {
int n = snprintf(line, sizeof(line), " Spectators (%u): ", g->spectator_count);
for (unsigned j = 0; j < g->spectator_count; j++) {
const char *nm = hybbx_session_display_name(g->spectators[j]);
if (j > 0) n += snprintf(line+n, sizeof(line)-(size_t)n, ", ");
n += snprintf(line+n, sizeof(line)-(size_t)n, "%s", nm ? nm : "?");
}
hybbx_session_write_line(session, line);
}
hybbx_session_write_line(session, "");
found++;
}
if (!found) hybbx_session_write_line(session, " No active games.");
return HYBBX_OK;
}
/* ── new ───────────────────────────────────────────────── */
if (ieq(sub, "new") || ieq(sub, "create")) {
for (unsigned i = 0; i < chess_max_games(); i++) {
chess_game_t *g = chess_get_game(i);
if (g && chess_is_player(g, session)) {
hybbx_session_write_line(session, "Already in a game. /chess resign first.");
return HYBBX_ERR_DENIED;
}
}
chess_game_t *g = chess_create_game(session, hybbx_session_username(session));
if (!g) { hybbx_session_write_line(session, "No free game slots."); return HYBBX_ERR_DENIED; }
snprintf(line, sizeof(line), "Game %s created. You are White.", g->game_id);
hybbx_session_write_line(session, line);
hybbx_session_write_line(session, "Waiting for Black to /chess join...");
chess_send_board(g, session);
return HYBBX_OK;
}
/* ── join ──────────────────────────────────────────────── */
if (ieq(sub, "join")) {
const char *id = (cmd->argc >= 2) ? cmd->argv[1] : NULL;
for (unsigned i = 0; i < chess_max_games(); i++) {
chess_game_t *g = chess_get_game(i);
if (g && chess_is_player(g, session)) {
hybbx_session_write_line(session, "Already in a game. /chess resign first.");
return HYBBX_ERR_DENIED;
}
}
chess_game_t *g = NULL;
if (id) {
g = chess_find_game_by_id(id);
if (!g || !g->active) { hybbx_session_write_line(session, "Game not found."); return HYBBX_ERR_NOT_FOUND; }
if (g->black_session) { hybbx_session_write_line(session, "Game is full."); return HYBBX_ERR_DENIED; }
} else {
g = chess_find_open_game();
if (!g) { hybbx_session_write_line(session, "No open games. /chess new"); return HYBBX_ERR_NOT_FOUND; }
}
chess_join_game(g, session, hybbx_session_username(session));
snprintf(line, sizeof(line), "Joined %s as Black. Game on!", g->game_id);
hybbx_session_write_line(session, line);
chess_send_board(g, g->white_session);
chess_send_board(g, session);
return HYBBX_OK;
}
/* ── watch ─────────────────────────────────────────────── */
if (ieq(sub, "watch") || ieq(sub, "spectate")) {
const char *id = (cmd->argc >= 2) ? cmd->argv[1] : NULL;
chess_game_t *g = NULL;
if (id) {
g = chess_find_game_by_id(id);
} else {
for (unsigned i = 0; i < chess_max_games(); i++) {
chess_game_t *t = chess_get_game(i);
if (t && t->black_session) { g = t; break; }
}
}
if (!g || !g->active) { hybbx_session_write_line(session, "No game to watch."); return HYBBX_ERR_NOT_FOUND; }
if (!chess_add_spectator(g, session)) { hybbx_session_write_line(session, "Spectator list full."); return HYBBX_ERR_DENIED; }
snprintf(line, sizeof(line), "Watching %s. Board refreshes every %ds.", g->game_id, CHESS_REFRESH_SEC);
hybbx_session_write_line(session, line);
chess_send_board(g, session);
return HYBBX_OK;
}
/* ── leave ─────────────────────────────────────────────── */
if (ieq(sub, "leave") || ieq(sub, "unwatch")) {
for (unsigned i = 0; i < chess_max_games(); i++) {
chess_game_t *g = chess_get_game(i);
if (g && chess_is_spectator(g, session)) {
chess_remove_spectator(g, session);
hybbx_session_write_line(session, "Stopped watching.");
return HYBBX_OK;
}
}
hybbx_session_write_line(session, "Not watching any game.");
return HYBBX_ERR_NOT_FOUND;
}
/* ── board ─────────────────────────────────────────────── */
if (ieq(sub, "board") || ieq(sub, "show")) {
for (unsigned i = 0; i < chess_max_games(); i++) {
chess_game_t *g = chess_get_game(i);
if (g && (chess_is_player(g, session) || chess_is_spectator(g, session))) {
chess_send_board(g, session);
return HYBBX_OK;
}
}
hybbx_session_write_line(session, "Not in a game. /chess new, join, or watch.");
return HYBBX_ERR_NOT_FOUND;
}
/* ── move ──────────────────────────────────────────────── */
if (ieq(sub, "move") || ieq(sub, "mv") || ieq(sub, "m")) {
if (cmd->argc < 3) { hybbx_session_write_line(session, "Usage: /chess move e2 e4"); return HYBBX_ERR_INVALID; }
chess_game_t *game = NULL;
for (unsigned i = 0; i < chess_max_games(); i++) {
chess_game_t *g = chess_get_game(i);
if (g && g->result == CHESS_RESULT_NONE && chess_is_player(g, session)) {
if (chess_player_color(g, session) == g->turn) { game = g; break; }
}
}
if (!game) { hybbx_session_write_line(session, "Not your turn or no active game."); return HYBBX_ERR_DENIED; }
char err[64];
if (!chess_make_move(game, cmd->argv[1], cmd->argv[2], 0, err, sizeof(err))) {
snprintf(line, sizeof(line), "Illegal: %s", err);
hybbx_session_write_line(session, line);
return HYBBX_ERR_INVALID;
}
/* Broadcast to all */
if (game->white_session) chess_send_board(game, game->white_session);
if (game->black_session) chess_send_board(game, game->black_session);
for (unsigned j = 0; j < game->spectator_count; j++)
chess_send_board(game, game->spectators[j]);
/* Game over? */
if (game->result != CHESS_RESULT_NONE) {
const char *res;
switch (game->result) {
case CHESS_WHITE_WINS: res = "White wins!"; break;
case CHESS_BLACK_WINS: res = "Black wins!"; break;
case CHESS_DRAW_STALEMATE: res = "Stalemate!"; break;
case CHESS_DRAW_AGREEMENT: res = "Draw!"; break;
default: res = "Game over."; break;
}
snprintf(line, sizeof(line), "[%s] %s", game->game_id, res);
if (game->white_session) hybbx_session_write_line(game->white_session, line);
if (game->black_session) hybbx_session_write_line(game->black_session, line);
for (unsigned j = 0; j < game->spectator_count; j++)
hybbx_session_write_line(game->spectators[j], line);
}
return HYBBX_OK;
}
/* ── resign ────────────────────────────────────────────── */
if (ieq(sub, "resign")) {
chess_game_t *game = NULL;
for (unsigned i = 0; i < chess_max_games(); i++) {
chess_game_t *g = chess_get_game(i);
if (g && chess_is_player(g, session)) { game = g; break; }
}
if (!game) { hybbx_session_write_line(session, "Not in a game."); return HYBBX_ERR_NOT_FOUND; }
chess_resign(game, session);
snprintf(line, sizeof(line), "[%s] %s resigned.", game->game_id, hybbx_session_username(session));
if (game->white_session) hybbx_session_write_line(game->white_session, line);
if (game->black_session) hybbx_session_write_line(game->black_session, line);
for (unsigned j = 0; j < game->spectator_count; j++)
hybbx_session_write_line(game->spectators[j], line);
return HYBBX_OK;
}
/* ── draw ──────────────────────────────────────────────── */
if (ieq(sub, "draw")) {
chess_game_t *game = NULL;
for (unsigned i = 0; i < chess_max_games(); i++) {
chess_game_t *g = chess_get_game(i);
if (g && chess_is_player(g, session)) { game = g; break; }
}
if (!game) { hybbx_session_write_line(session, "Not in a game."); return HYBBX_ERR_NOT_FOUND; }
chess_offer_draw(game, session);
snprintf(line, sizeof(line), "[%s] Draw agreed.", game->game_id);
if (game->white_session) hybbx_session_write_line(game->white_session, line);
if (game->black_session) hybbx_session_write_line(game->black_session, line);
for (unsigned j = 0; j < game->spectator_count; j++)
hybbx_session_write_line(game->spectators[j], line);
return HYBBX_OK;
}
/* ── clear ─────────────────────────────────────────────── */
if (ieq(sub, "clear") || ieq(sub, "reset")) {
hybbx_session_write_line(session, "Chess has no persistent history to clear.");
return HYBBX_OK;
}
hybbx_session_write_line(session, "Unknown chess command. /chess help");
return HYBBX_ERR_NOT_FOUND;
}
|
