- /*
- * (ESR) This special-travel loop may have to be repeated if it includes
- * the plover passage. Same deal for any future cases wgerw we beed to
- * block travel and then redo it once the blocking condition has been
- * removed.
- */
- for (;;) {
- game.newloc=scratchloc/1000;
- motion=MOD(game.newloc,100);
- if (!SPECIAL(game.newloc)) {
- if (game.newloc <= 100) {
- if (game.newloc == 0 || PCT(game.newloc))
- break;
- /* else fall through */
- } if (TOTING(motion) || (game.newloc > 200 && AT(motion)))
- break;
- /* else fall through */
- }
- else if (game.prop[motion] != game.newloc/100-3)
- break;
- do {
- if (TRAVEL[kk] < 0)BUG(25);
- ++kk;
- game.newloc=labs(TRAVEL[kk])/1000;
- } while
- (game.newloc == scratchloc);
- scratchloc=game.newloc;
- }
-
- game.newloc=MOD(scratchloc,1000);
- if (!SPECIAL(game.newloc))
- return true;
- if (game.newloc <= 500) {
- game.newloc=game.newloc-SPECIALBASE;
- switch (game.newloc)
- {
- case 1:
- /* Travel 301. Plover-alcove passage. Can carry only
- * emerald. Note: travel table must include "useless"
- * entries going through passage, which can never be used for
- * actual motion, but can be spotted by "go back". */
- /* FIXME: Arithmetic on location numbers */
- game.newloc=99+100-game.loc;
- if (game.holdng == 0 || (game.holdng == 1 && TOTING(EMRALD)))
- return true;
- game.newloc=game.loc;
- RSPEAK(MUST_DROP);
- return true;
- case 2:
- /* Travel 302. Plover transport. Drop the emerald (only use
- * special travel if toting it), so he's forced to use the
- * plover-passage to get it out. Having dropped it, go back and
- * pretend he wasn't carrying it after all. */
- DROP(EMRALD,game.loc);
- do {
- if (TRAVEL[kk] < 0)BUG(25);
- ++kk;
- game.newloc=labs(TRAVEL[kk])/1000;
- } while
- (game.newloc == scratchloc);
- continue; /* back to top of do/while loop */
- case 3:
- /* Travel 303. Troll bridge. Must be done only as special
- * motion so that dwarves won't wander across and encounter
- * the bear. (They won't follow the player there because
- * that region is forbidden to the pirate.) If
- * game.prop(TROLL)=1, he's crossed since paying, so step out
- * and block him. (standard travel entries check for
- * game.prop(TROLL)=0.) Special stuff for bear. */
- if (game.prop[TROLL] == 1) {
- PSPEAK(TROLL,1);
- game.prop[TROLL]=0;
- MOVE(TROLL2,0);
- MOVE(TROLL2+NOBJECTS,0);
- MOVE(TROLL,PLAC[TROLL]);
- MOVE(TROLL+NOBJECTS,FIXD[TROLL]);
- JUGGLE(CHASM);
- game.newloc=game.loc;
- return true;
- } else {
- game.newloc=PLAC[TROLL]+FIXD[TROLL]-game.loc;
- if (game.prop[TROLL] == 0)game.prop[TROLL]=1;
- if (!TOTING(BEAR)) return true;
- RSPEAK(BRIDGE_COLLAPSE);
- game.prop[CHASM]=1;
- game.prop[TROLL]=2;
- DROP(BEAR,game.newloc);
- game.fixed[BEAR]= -1;
- game.prop[BEAR]=3;
- game.oldlc2=game.newloc;
- croak(cmdin);
- return false;
- }
- }
- BUG(20);
- }
+ for (;;) { /* L12 loop */
+ for (;;) {
+ long cond = travel[travel_entry].cond;
+ long arg = MOD(cond, 100);
+ if (!SPECIAL(cond)) {
+ /* YAML N and [pct N] conditionals */
+ if (cond <= 100) {
+ if (cond == 0 ||
+ PCT(cond))
+ break;
+ /* else fall through */
+ }
+ /* YAML [with OBJ] clause */
+ if (TOTING(arg) ||
+ (cond > 200 && AT(arg)))
+ break;
+ /* else fall through to check [not OBJ STATE] */
+ } else if (game.prop[arg] != cond / 100 - 3)
+ break;
+
+ /* We arrive here on conditional failure.
+ * Skip to next non-matching destination */
+ long te_tmp = travel_entry;
+ do {
+ if (travel[te_tmp].stop)
+ BUG(CONDITIONAL_TRAVEL_ENTRY_WITH_NO_ALTERATION); // LCOV_EXCL_LINE
+ ++te_tmp;
+ } while
+ (traveleq(travel_entry, te_tmp));
+ travel_entry = te_tmp;
+ }
+
+ /* Found an eligible rule, now execute it */
+ game.newloc = travel[travel_entry].dest;
+ if (!SPECIAL(game.newloc))
+ return;
+
+ if (game.newloc > 500) {
+ /* Execute a speak rule */
+ rspeak(L_SPEAK(game.newloc));
+ game.newloc = game.loc;
+ return;
+ } else {
+ game.newloc -= SPECIALBASE;
+ switch (game.newloc) {
+ case 1:
+ /* Travel 301. Plover-alcove passage. Can carry only
+ * emerald. Note: travel table must include "useless"
+ * entries going through passage, which can never be used
+ * for actual motion, but can be spotted by "go back". */
+ /* FIXME: Arithmetic on location numbers */
+ game.newloc = 99 + 100 - game.loc;
+ if (game.holdng > 1 ||
+ (game.holdng == 1 && !TOTING(EMERALD))) {
+ game.newloc = game.loc;
+ rspeak(MUST_DROP);
+ }
+ return;
+ case 2:
+ /* Travel 302. Plover transport. Drop the
+ * emerald (only use special travel if toting
+ * it), so he's forced to use the plover-passage
+ * to get it out. Having dropped it, go back and
+ * pretend he wasn't carrying it after all. */
+ drop(EMERALD, game.loc);
+ int te_tmp = travel_entry;
+ do {
+ if (travel[te_tmp].stop)
+ BUG(CONDITIONAL_TRAVEL_ENTRY_WITH_NO_ALTERATION); // LCOV_EXCL_LINE
+ ++te_tmp;
+ } while
+ (traveleq(travel_entry, te_tmp));
+ travel_entry = te_tmp;
+ continue; /* goto L12 */
+ case 3:
+ /* Travel 303. Troll bridge. Must be done only
+ * as special motion so that dwarves won't wander
+ * across and encounter the bear. (They won't
+ * follow the player there because that region is
+ * forbidden to the pirate.) If
+ * game.prop(TROLL)=1, he's crossed since paying,
+ * so step out and block him. (standard travel
+ * entries check for game.prop(TROLL)=0.) Special
+ * stuff for bear. */
+ if (game.prop[TROLL] == TROLL_PAIDONCE) {
+ pspeak(TROLL, look, TROLL_PAIDONCE, true);
+ game.prop[TROLL] = TROLL_UNPAID;
+ move(TROLL2, 0);
+ move(TROLL2 + NOBJECTS, 0);
+ move(TROLL, objects[TROLL].plac);
+ move(TROLL + NOBJECTS, objects[TROLL].fixd);
+ juggle(CHASM);
+ game.newloc = game.loc;
+ return;
+ } else {
+ game.newloc = objects[TROLL].plac + objects[TROLL].fixd - game.loc;
+ if (game.prop[TROLL] == TROLL_UNPAID)
+ game.prop[TROLL] = TROLL_PAIDONCE;
+ if (!TOTING(BEAR))
+ return;
+ rspeak(BRIDGE_COLLAPSE);
+ game.prop[CHASM] = BRIDGE_WRECKED;
+ game.prop[TROLL] = TROLL_GONE;
+ drop(BEAR, game.newloc);
+ game.fixed[BEAR] = -1;
+ game.prop[BEAR] = BEAR_DEAD;
+ game.oldlc2 = game.newloc;
+ croak();
+ return;
+ }
+ default:
+ BUG(SPECIAL_TRAVEL_500_GT_L_GT_300_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE
+ }
+ }
+ break; /* Leave L12 loop */
+ }