Add play_if_exist command

config.l

@@ -74,6 +74,7 @@ cursor		{ return TYPE_CURSOR; }
 "chroot_path"	{ return TYPE_PATH_CHROOT; }
 "game_name"     { return TYPE_NAME_GAME; }
 "short_name"	{ return TYPE_GAME_SHORT_NAME; }
+"game_id"	{ return TYPE_GAME_ID; }
 "game_path"	{ return TYPE_PATH_GAME; }
 "dglroot"	{ return TYPE_PATH_DGLDIR; }
 "spooldir"	{ return TYPE_PATH_SPOOL; }
@@ -120,6 +121,7 @@ ask_login	{ yylval.i = DGLCMD_LOGIN;      return TYPE_DGLCMD0; }
 ask_register	{ yylval.i = DGLCMD_REGISTER;   return TYPE_DGLCMD0; }
 quit		{ yylval.i = DGLCMD_QUIT;       return TYPE_DGLCMD0; }
 play_game	{ yylval.i = DGLCMD_PLAYGAME;    return TYPE_DGLCMD1; }
+play_if_exist	{ yylval.i = DGLCMD_PLAY_IF_EXIST;    return TYPE_DGLCMD2; }
 submenu		{ yylval.i = DGLCMD_SUBMENU;     return TYPE_DGLCMD1; }
 return		{ yylval.i = DGLCMD_RETURN;      return TYPE_DGLCMD0; }
 rawprint	{ yylval.i = DGLCMD_RAWPRINT;    return TYPE_DGLCMD1; }

config.y

@@ -51,7 +51,7 @@ static int sortmode_number(const char *sortmode_name) {
 
 %token TYPE_SUSER TYPE_SGROUP TYPE_SGID TYPE_SUID TYPE_MAX TYPE_MAXNICKLEN
 %token TYPE_GAME_SHORT_NAME TYPE_WATCH_SORTMODE TYPE_BANNERVARS
-%token TYPE_ALLOW_REGISTRATION TYPE_WATCH_COLUMNS
+%token TYPE_ALLOW_REGISTRATION TYPE_WATCH_COLUMNS TYPE_GAME_ID
 %token TYPE_PATH_GAME TYPE_NAME_GAME TYPE_PATH_DGLDIR TYPE_PATH_SPOOL
 %token TYPE_PATH_BANNER TYPE_PATH_CANNED TYPE_PATH_CHROOT
 %token TYPE_PATH_PASSWD TYPE_PATH_LOCKFILE TYPE_PATH_TTYREC
@@ -496,6 +496,11 @@ game_definition : TYPE_CMDQUEUE
 		myconfig[ncnf]->shortname = strdup($3);
 		break;
 
+	    case TYPE_GAME_ID:
+		if (myconfig[ncnf]->game_id) free (myconfig[ncnf]->game_id);
+		myconfig[ncnf]->game_id = strdup($3);
+		break;
+
 	    case TYPE_RC_FMT:
 		if (myconfig[ncnf]->rc_fmt) free(myconfig[ncnf]->rc_fmt);
 		myconfig[ncnf]->rc_fmt = strdup($3);
@@ -575,6 +580,8 @@ definegame : TYPE_DEFINE_GAME '{'
 	}
 	game_definitions '}'
 	{
+	    if (myconfig[ncnf]->game_id == NULL && myconfig[ncnf]->shortname)
+		myconfig[ncnf]->game_id = strdup(myconfig[ncnf]->shortname);
 	    ncnf++;
 	    num_games = ncnf;
 	}
@@ -644,6 +651,7 @@ KeyType : TYPE_SUSER	{ $$ = TYPE_SUSER; }
 	| TYPE_PATH_GAME	{ $$ = TYPE_PATH_GAME; }
         | TYPE_NAME_GAME        { $$ = TYPE_NAME_GAME; }
 	| TYPE_GAME_SHORT_NAME	{ $$ = TYPE_GAME_SHORT_NAME; }
+	| TYPE_GAME_ID	{ $$ = TYPE_GAME_ID; }
 	| TYPE_PATH_DGLDIR	{ $$ = TYPE_PATH_DGLDIR; }
 	| TYPE_PATH_SPOOL	{ $$ = TYPE_PATH_SPOOL; }
 	| TYPE_PATH_BANNER	{ $$ = TYPE_PATH_BANNER; }
@@ -680,6 +688,7 @@ const char* lookup_token (int t)
     case TYPE_NAME_GAME: return "game_name";
     case TYPE_ALLOW_REGISTRATION: return "allow_new_nicks";
     case TYPE_GAME_SHORT_NAME: return "short_name";
+    case TYPE_GAME_ID: return "game_id";
     case TYPE_PATH_DGLDIR: return "dglroot";
     case TYPE_PATH_SPOOL: return "spooldir";
     case TYPE_PATH_BANNER: return "banner";

dgamelaunch.h

@@ -72,6 +72,7 @@ typedef enum
     DGLCMD_CHMAIL,	/* chmail */
     DGLCMD_CHPASSWD,	/* chpasswd */
     DGLCMD_PLAYGAME,	/* play_game "foo" */
+    DGLCMD_PLAY_IF_EXIST,	/* play_if_exist "game" "file" */
     DGLCMD_SUBMENU,	/* submenu "foo" */
     DGLCMD_RETURN	/* return */
 } dglcmd_actions;
@@ -198,6 +199,7 @@ struct dg_config
 {
   char* game_path;
   char* game_name;
+  char* game_id;
   char* shortname;
   char* rcfile;
   char* ttyrecdir;

dgl-common.c

@@ -25,6 +25,7 @@ struct dg_config **myconfig = NULL;
 struct dg_config defconfig = {
   /* game_path = */ "/bin/nethack",
   /* game_name = */ "NetHack",
+  /* game_id = */ NULL,
   /* shortname = */ "NH",
   /* rcfile = */ NULL, /*"/dgl-default-rcfile",*/
   /* ttyrecdir =*/ "%ruserdata/%n/ttyrec/",
@@ -215,6 +216,7 @@ dgl_exec_cmdqueue(struct dg_cmdpart *queue, int game, struct dg_user *me)
     struct dg_cmdpart *tmp = queue;
     char *p1;
     char *p2;
+    int played = 0;
 
     if (!queue) return 1;
 
@@ -338,12 +340,22 @@ dgl_exec_cmdqueue(struct dg_cmdpart *queue, int game, struct dg_user *me)
 	case DGLCMD_RETURN:
 	    return_from_submenu = 1;
 	    break;
+	case DGLCMD_PLAY_IF_EXIST:
+	    if (!(loggedin && me && p1 && p2)) break;
+	    {
+		FILE *tmpfile;
+		tmpfile = fopen(p2, "r");
+		if (tmpfile) {
+		    fclose(tmpfile);
+		} else break;
+	    }
+	    /* else fall through to playgame */
 	case DGLCMD_PLAYGAME:
-	    if (loggedin && me && p1) {
+	    if (loggedin && me && p1 && !played) {
 		int userchoice, i;
 		char *tmpstr;
 		for (userchoice = 0; userchoice < num_games; userchoice++) {
-		    if (!strcmp(myconfig[userchoice]->game_name, p1) || !strcmp(myconfig[userchoice]->shortname, p1)) {
+		    if (!strcmp(myconfig[userchoice]->game_id, p1) || !strcmp(myconfig[userchoice]->game_name, p1) || !strcmp(myconfig[userchoice]->shortname, p1)) {
 			if (purge_stale_locks(userchoice)) {
 			    if (myconfig[userchoice]->rcfile) {
 				if (access (dgl_format_str(userchoice, me, myconfig[userchoice]->rc_fmt, NULL), R_OK) == -1)
@@ -378,6 +390,7 @@ dgl_exec_cmdqueue(struct dg_cmdpart *queue, int game, struct dg_user *me)
 					 dgl_format_str(userchoice, me, myconfig[userchoice]->ttyrecdir, NULL),
 					 gen_ttyrec_filename());
 			    idle_alarm_set_enabled(1);
+			    played = 1;
 			    /* lastly, run the generic "do these when a game is left" commands */
 			    signal (SIGHUP, catch_sighup);
 			    signal (SIGINT, catch_sighup);

examples/dgamelaunch.conf

@@ -143,6 +143,7 @@ default_term = "xterm"
 #                        registration of new nicks is allowed.
 #   play_game "foo"    = start game which has the short name "foo"
 #                        (user must be logged in)
+#   play_if_exist "foo" "file" = start game "foo", if file "file" exists.
 #   submenu "foo"      = go to submenu "foo"
 #   return             = return from submenu
 #
@@ -260,6 +261,10 @@ menu["watchmenu_help"] {
 #  # Short name, used in the watching menu
 #  short_name = "NHstb"
 #
+#  # Game ID - should be unique. Defaults to game_name, if not defined.
+#  # Used to determine which game is which for "play_game" and "play_if_exists" commands
+#  game_id = "NHstb"
+#
 #  # arguments for when we exec the binary
 #  game_args = "/bin/nethackstub",
 #	      "foo",