X-Git-Url: https://jxself.org/git/?p=open-adventure.git;a=blobdiff_plain;f=main.c;h=5bf7d9522a57e8d4c360a12791f3388c2fb0164f;hp=e2fdadb60ba0a2219d51cd1030f3d686c18f4e80;hb=8c6593ad0c06b58c2343869b7e1394645caa474a;hpb=7c610a120d29d3b42642df53f2eef2d24752c2b8 diff --git a/main.c b/main.c index e2fdadb..5bf7d95 100644 --- a/main.c +++ b/main.c @@ -1,17 +1,7 @@ /* - * There used to be a note that said this: - * - * The author - Don Woods - apologises for the style of the code; it - * is a result of running the original Fortran IV source through a - * home-brew Fortran-to-C converter. - * - * Now that the code has been restructured into something much closer - * to idiomatic C, the following is more appropriate: - * - * ESR apologizes for the remaing gotos (now confined to one function - * in this file - there used to be over 350 of them, *everywhere*), - * and for the offensive globals. Applying the Structured Program - * Theorem can be hard. + * Copyright (c) 1977, 2005 by Will Crowther and Don Woods + * Copyright (c) 2017 by Eric S. Raymond + * SPDX-License-Identifier: BSD-2-clause */ #include @@ -50,6 +40,7 @@ static void sig_handler(int signo) */ static bool do_command(void); +static bool do_move(void); int main(int argc, char *argv[]) { @@ -86,7 +77,6 @@ int main(int argc, char *argv[]) fprintf(stderr, "advent: can't open save file %s for read\n", optarg); - signal(SIGINT, sig_handler); break; #endif default: @@ -127,6 +117,11 @@ int main(int argc, char *argv[]) /* interpret commands until EOF or interrupt */ for (;;) { + // if we're supposed to move, move + if (!do_move()) + continue; + + // get command if (!do_command()) break; } @@ -134,23 +129,6 @@ int main(int argc, char *argv[]) terminate(quitgame); } -static bool fallback_handler(struct command_t command) -/* fallback handler for commands not handled by FORTRANish parser */ -{ - long sv; - char buf[LINESIZE]; - sprintf(buf, "%s %s", command.raw1, command.raw2); - - if (sscanf(buf, "seed %ld", &sv) == 1) { - set_seed(sv); - printf("Seed set to %ld\n", sv); - // autogenerated, so don't charge user time for it. - --game.turns; - return true; - } - return false; -} - /* Check if this loc is eligible for any hints. If been here long * enough, display. Ignore "HINTS" < 4 (special stuff, see database * notes). */ @@ -224,9 +202,8 @@ static void checkhints(void) break; game.hintlc[hint] = 0; return; - default: + default: // LCOV_EXCL_LINE BUG(HINT_NUMBER_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE - break; } /* Fall through to hint display */ @@ -247,12 +224,12 @@ static bool spotted_by_pirate(int i) if (i != PIRATE) return false; - /* The pirate's spotted him. He leaves him alone once we've + /* The pirate's spotted him. Pirate leaves him alone once we've * found chest. K counts if a treasure is here. If not, and * tally=1 for an unseen chest, let the pirate be spotted. Note * that game.place[CHEST] = LOC_NOWHERE might mean that he's thrown * it to the troll, but in that case he's seen the chest - * (game.prop=0). */ + * (game.prop[CHEST] == STATE_FOUND). */ if (game.loc == game.chloc || game.prop[CHEST] != STATE_NOTFOUND) return true; @@ -316,21 +293,20 @@ static bool dwarfmove(void) /* Dwarves move. Return true if player survives, false if he dies. */ { int kk, stick, attack; - long tk[21]; + loc_t tk[21]; /* Dwarf stuff. See earlier comments for description of * variables. Remember sixth dwarf is pirate and is thus * very different except for motion rules. */ - /* First off, don't let the dwarves follow him into a pit or - * a wall. Activate the whole mess the first time he gets as - * far as the hall of mists (loc 15). If game.newloc is - * forbidden to pirate (in particular, if it's beyond the + /* First off, don't let the dwarves follow him into a pit or a + * wall. Activate the whole mess the first time he gets as far + * as the Hall of Mists (what INDEEP() tests). If game.newloc + * is forbidden to pirate (in particular, if it's beyond the * troll bridge), bypass dwarf stuff. That way pirate can't * steal return toll, and dwarves can't meet the bear. Also * means dwarves won't follow him into dead end in maze, but - * c'est la vie. They'll wait for him outside the dead - * end. */ + * c'est la vie. They'll wait for him outside the dead end. */ if (game.loc == LOC_NOWHERE || FORCED(game.loc) || CNDBIT(game.newloc, COND_NOARRR)) @@ -344,7 +320,7 @@ static bool dwarfmove(void) } /* When we encounter the first dwarf, we kill 0, 1, or 2 of - * the 5 dwarves. If any of the survivors is at loc, + * the 5 dwarves. If any of the survivors is at game.loc, * replace him with the alternate. */ if (game.dflag == 1) { if (!INDEEP(game.loc) || @@ -399,7 +375,8 @@ static bool dwarfmove(void) else if (j > 1 && game.newloc == tk[j - 1]) continue; else if (j >= DIM(tk) - 1) - continue; + /* This can't actually happen. */ + continue; // LCOV_EXCL_LINE else if (game.newloc == game.dloc[i]) continue; else if (FORCED(game.newloc)) @@ -449,7 +426,7 @@ static bool dwarfmove(void) rspeak(stick > 1 ? MULTIPLE_HITS : (stick == 1 ? ONE_HIT : NONE_HIT), stick); } else { rspeak(KNIFE_THROWN); - rspeak(MISSES_YOU); + rspeak(stick ? GETS_YOU : MISSES_YOU); } if (stick == 0) return true; @@ -476,22 +453,28 @@ static bool dwarfmove(void) * building (and heaven help him if he tries to xyzzy back into the * cave without the lamp!). game.oldloc is zapped so he can't just * "retreat". */ - static void croak(void) /* Okay, he's dead. Let's get on with it. */ { const char* query = obituaries[game.numdie].query; const char* yes_response = obituaries[game.numdie].yes_response; + ++game.numdie; + if (game.closng) { /* He died during closing time. No resurrection. Tally up a * death and exit. */ rspeak(DEATH_CLOSING); terminate(endgame); - } else if (game.numdie == NDEATHS || - !yes(query, yes_response, arbitrary_messages[OK_MAN])) + } else if (!yes(query, yes_response, arbitrary_messages[OK_MAN]) + || game.numdie == NDEATHS) { + /* Player is asked if he wants to try again. If not, or if + * he's already used all of his lives, we end the game */ terminate(endgame); - else { + } else { + /* If player wishes to continue, we empty the liquids in the + * user's inventory, turn off the lamp, and drop all items + * where he died. */ game.place[WATER] = game.place[OIL] = LOC_NOWHERE; if (TOTING(LAMP)) game.prop[LAMP] = LAMP_DARK; @@ -506,7 +489,30 @@ static void croak(void) } } -static bool traveleq(long a, long b) +static void describe_location(void) +/* Describe the location to the user */ +{ + const char* msg = locations[game.loc].description.small; + + if (MOD(game.abbrev[game.loc], game.abbnum) == 0 || + msg == NO_MESSAGE) + msg = locations[game.loc].description.big; + + if (!FORCED(game.loc) && DARK(game.loc)) { + msg = arbitrary_messages[PITCH_DARK]; + } + + if (TOTING(BEAR)) + rspeak(TAME_BEAR); + + speak(msg); + + if (game.loc == LOC_Y2 && PCT(25) && !game.closng) + rspeak(SAYS_PLUGH); +} + + +static bool traveleq(int a, int b) /* Are two travel entries equal for purposes of skip after failed condition? */ { return (travel[a].condtype == travel[b].condtype) @@ -523,8 +529,7 @@ static bool traveleq(long a, long b) * does, game.newloc will be limbo, and game.oldloc will be what killed * him, so we need game.oldlc2, which is the last place he was * safe.) */ - -static void playermove( int motion) +static void playermove(int motion) { int scratchloc, travel_entry = tkey[game.loc]; game.newloc = game.loc; @@ -541,40 +546,39 @@ static void playermove( int motion) motion = game.oldlc2; game.oldlc2 = game.oldloc; game.oldloc = game.loc; - int spk = 0; - if (motion == game.loc) - spk = FORGOT_PATH; - if (CNDBIT(game.loc, COND_NOBACK)) - spk = TWIST_TURN; - if (spk == 0) { - int te_tmp = 0; - for (;;) { - enum desttype_t desttype = travel[travel_entry].desttype; - scratchloc = travel[travel_entry].destval; - if (desttype != dest_goto || scratchloc != motion) { - if (desttype == dest_goto) { - if (FORCED(scratchloc) && travel[tkey[scratchloc]].destval == motion) - te_tmp = travel_entry; - } - if (!travel[travel_entry].stop) { - ++travel_entry; /* go to next travel entry for this location */ - continue; - } - /* we've reached the end of travel entries for game.loc */ - travel_entry = te_tmp; - if (travel_entry == 0) { - rspeak(NOT_CONNECTED); - return; - } - } + if (CNDBIT(game.loc, COND_NOBACK)) { + rspeak(TWIST_TURN); + return; + } + if (motion == game.loc) { + rspeak(FORGOT_PATH); + return; + } - motion = travel[travel_entry].motion; - travel_entry = tkey[game.loc]; - break; /* fall through to ordinary travel */ + int te_tmp = 0; + for (;;) { + enum desttype_t desttype = travel[travel_entry].desttype; + scratchloc = travel[travel_entry].destval; + if (desttype != dest_goto || scratchloc != motion) { + if (desttype == dest_goto) { + if (FORCED(scratchloc) && travel[tkey[scratchloc]].destval == motion) + te_tmp = travel_entry; + } + if (!travel[travel_entry].stop) { + ++travel_entry; /* go to next travel entry for this location */ + continue; + } + /* we've reached the end of travel entries for game.loc */ + travel_entry = te_tmp; + if (travel_entry == 0) { + rspeak(NOT_CONNECTED); + return; + } } - } else { - rspeak(spk); - return; + + motion = travel[travel_entry].motion; + travel_entry = tkey[game.loc]; + break; /* fall through to ordinary travel */ } } else if (motion == LOOK) { /* Look. Can't give more detail. Pretend it wasn't dark @@ -645,7 +649,6 @@ static void playermove( int motion) /* (ESR) We've found a destination that goes with the motion verb. * Next we need to check any conditional(s) on this destination, and * possibly on following entries. */ - /* FIXME: Magic numbers related to move opcodes */ do { for (;;) { /* L12 loop */ for (;;) { @@ -670,7 +673,7 @@ static void playermove( int motion) /* We arrive here on conditional failure. * Skip to next non-matching destination */ - long te_tmp = travel_entry; + int te_tmp = travel_entry; do { if (travel[te_tmp].stop) BUG(CONDITIONAL_TRAVEL_ENTRY_WITH_NO_ALTERATION); // LCOV_EXCL_LINE @@ -714,14 +717,16 @@ static void playermove( int motion) * 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; + { + 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: /* Special travel 3. Troll bridge. Must be done @@ -729,14 +734,15 @@ static void playermove( int motion) * 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. */ + * game.prop[TROLL]=TROLL_PAIDONCE, he's crossed + * since paying, so step out and block him. + * (standard travel entries check for + * game.prop[TROLL]=TROLL_UNPAID.) Special stuff + * for bear. */ if (game.prop[TROLL] == TROLL_PAIDONCE) { - pspeak(TROLL, look, TROLL_PAIDONCE, true); + pspeak(TROLL, look, true, TROLL_PAIDONCE); game.prop[TROLL] = TROLL_UNPAID; - move(TROLL2, LOC_NOWHERE); + DESTROY(TROLL2); move(TROLL2 + NOBJECTS, IS_FREE); move(TROLL, objects[TROLL].plac); move(TROLL + NOBJECTS, objects[TROLL].fixd); @@ -758,7 +764,7 @@ static void playermove( int motion) croak(); return; } - default: + default: // LCOV_EXCL_LINE BUG(SPECIAL_TRAVEL_500_GT_L_GT_300_EXCEEDS_GOTO_LIST); // LCOV_EXCL_LINE } } @@ -768,6 +774,50 @@ static void playermove( int motion) (false); } +static void lampcheck(void) +/* Check game limit and lamp timers */ +{ + if (game.prop[LAMP] == LAMP_BRIGHT) + --game.limit; + + /* Another way we can force an end to things is by having the + * lamp give out. When it gets close, we come here to warn him. + * First following arm checks if the lamp and fresh batteries are + * here, in which case we replace the batteries and continue. + * Second is for other cases of lamp dying. Even after it goes + * out, he can explore outside for a while if desired. */ + if (game.limit <= WARNTIME) { + if (HERE(BATTERY) && game.prop[BATTERY] == FRESH_BATTERIES && HERE(LAMP)) { + rspeak(REPLACE_BATTERIES); + game.prop[BATTERY] = DEAD_BATTERIES; +#ifdef __unused__ + /* This code from the original game seems to have been faulty. + * No tests ever passed the guard, and with the guard removed + * the game hangs when the lamp limit is reached. + */ + if (TOTING(BATTERY)) + drop(BATTERY, game.loc); +#endif + game.limit += BATTERYLIFE; + game.lmwarn = false; + } else if (!game.lmwarn && HERE(LAMP)) { + game.lmwarn = true; + if (game.prop[BATTERY] == DEAD_BATTERIES) + rspeak(MISSING_BATTERIES); + else if (game.place[BATTERY] == LOC_NOWHERE) + rspeak(LAMP_DIM); + else + rspeak(GET_BATTERIES); + } + } + if (game.limit == 0) { + game.limit = -1; + game.prop[LAMP] = LAMP_DARK; + if (HERE(LAMP)) + rspeak(LAMP_OUT); + } +} + static bool closecheck(void) /* Handle the closing of the cave. The cave closes "clock1" turns * after the last treasure has been located (including the pirate's @@ -788,6 +838,15 @@ static bool closecheck(void) * problems arise from the use of negative prop numbers to suppress * the object descriptions until he's actually moved the objects. */ { + /* If a turn threshold has been met, apply penalties and tell + * the player about it. */ + for (int i = 0; i < NTHRESHOLDS; ++i) { + if (game.turns == turn_thresholds[i].threshold + 1) { + game.trnluz += turn_thresholds[i].point_loss; + speak(turn_thresholds[i].message); + } + } + /* Don't tick game.clock1 unless well into cave (and not at Y2). */ if (game.tally == 0 && INDEEP(game.loc) && game.loc != LOC_Y2) --game.clock1; @@ -812,7 +871,7 @@ static bool closecheck(void) game.dseen[i] = false; game.dloc[i] = LOC_NOWHERE; } - move(TROLL, LOC_NOWHERE); + DESTROY(TROLL); move(TROLL + NOBJECTS, IS_FREE); move(TROLL2, objects[TROLL].plac); move(TROLL2 + NOBJECTS, objects[TROLL].fixd); @@ -826,7 +885,7 @@ static bool closecheck(void) rspeak(CAVE_CLOSING); game.clock1 = -1; game.closng = true; - return true; + return game.closed; } else if (game.clock1 < 0) --game.clock2; if (game.clock2 == 0) { @@ -875,50 +934,13 @@ static bool closecheck(void) rspeak(CAVE_CLOSED); game.closed = true; - return true; + return game.closed; } + lampcheck(); return false; } -static void lampcheck(void) -/* Check game limit and lamp timers */ -{ - if (game.prop[LAMP] == LAMP_BRIGHT) - --game.limit; - - /* Another way we can force an end to things is by having the - * lamp give out. When it gets close, we come here to warn him. - * First following arm checks if the lamp and fresh batteries are - * here, in which case we replace the batteries and continue. - * Second is for other cases of lamp dying. Eve after it goes - * out, he can explore outside for a while if desired. */ - if (game.limit <= WARNTIME) { - if (HERE(BATTERY) && game.prop[BATTERY] == FRESH_BATTERIES && HERE(LAMP)) { - rspeak(REPLACE_BATTERIES); - game.prop[BATTERY] = DEAD_BATTERIES; - if (TOTING(BATTERY)) - drop(BATTERY, game.loc); - game.limit += BATTERYLIFE; - game.lmwarn = false; - } else if (!game.lmwarn && HERE(LAMP)) { - game.lmwarn = true; - if (game.prop[BATTERY] == DEAD_BATTERIES) - rspeak(MISSING_BATTERIES); - else if (game.place[BATTERY] == LOC_NOWHERE) - rspeak(LAMP_DIM); - else - rspeak(GET_BATTERIES); - } - } - if (game.limit == 0) { - game.limit = -1; - game.prop[LAMP] = LAMP_DARK; - if (HERE(LAMP)) - rspeak(LAMP_OUT); - } -} - static void listobjects(void) /* Print out descriptions of objects at this location. If * not closing and property value is negative, tally off @@ -931,7 +953,7 @@ static void listobjects(void) if (!DARK(game.loc)) { ++game.abbrev[game.loc]; for (int i = game.atloc[game.loc]; i != 0; i = game.link[i]) { - long obj = i; + obj_t obj = i; if (obj > NOBJECTS) obj = obj - NOBJECTS; if (obj == STEPS && TOTING(NUGGET)) @@ -965,23 +987,87 @@ static void listobjects(void) kk = (game.loc == game.fixed[STEPS]) ? STEPS_UP : STEPS_DOWN; - pspeak(obj, look, kk, true); + pspeak(obj, look, true, kk); } } } -static bool do_command() -/* Get and execute a command */ +bool preprocess_command(command_t *command) +/* Pre-processes a command input to see if we need to tease out a few specific cases: + * - "enter water" or "enter stream": + * wierd specific case that gets the user wet, and then kicks us back to get another command + * - : + * Irregular form of input, but should be allowed. We switch back to form for + * furtherprocessing. + * - "grate": + * If in location with grate, we move to that grate. If we're in a number of other places, + * we move to the entrance. + * - "water plant", "oil plant", "water door", "oil door": + * Change to "pour water" or "pour oil" based on context + * - "cage bird": + * If bird is present, we change to "carry bird" + * + * Returns true if pre-processing is complete, and we're ready to move to the primary command + * processing, false otherwise. */ { - long kmod, defn; - static long igo = 0; - static struct command_t command; - char inputbuf[LINESIZE]; - char word1[TOKLEN + 1]; - char word2[TOKLEN + 1]; + if (command->word[0].type == MOTION && command->word[0].id == ENTER + && (command->word[1].id == STREAM || command->word[1].id == WATER)) { + if (LIQLOC(game.loc) == WATER) + rspeak(FEET_WET); + else + rspeak(WHERE_QUERY); + } else { + if (command->word[0].type == OBJECT) { + /* From OV to VO form */ + if (command->word[1].type == ACTION) { + command_word_t stage = command->word[0]; + command->word[0] = command->word[1]; + command->word[1] = stage; + } + + if (command->word[0].id == GRATE) { + command->word[0].type = MOTION; + if (game.loc == LOC_START || + game.loc == LOC_VALLEY || + game.loc == LOC_SLIT) { + command->word[0].id = DEPRESSION; + } + if (game.loc == LOC_COBBLE || + game.loc == LOC_DEBRIS || + game.loc == LOC_AWKWARD || + game.loc == LOC_BIRD || + game.loc == LOC_PITTOP) { + command->word[0].id = ENTRANCE; + } + } + if ((command->word[0].id == WATER || command->word[0].id == OIL) && + (command->word[1].id == PLANT || command->word[1].id == DOOR)) { + if (AT(command->word[1].id)) { + command->word[1] = command->word[0]; + command->word[0].id = POUR; + command->word[0].type = ACTION; + strncpy(command->word[0].raw, "pour", LINESIZE - 1); + } + } + if (command->word[0].id == CAGE && command->word[1].id == BIRD && HERE(CAGE) && HERE(BIRD)) { + command->word[0].id = CARRY; + command->word[0].type = ACTION; + } + } - command.verb = 0; + /* If no word type is given for the first word, we assume it's a motion. */ + if(command->word[0].type == NO_WORD_TYPE) + command->word[0].type = MOTION; + + command->state = PREPROCESSED; + return true; + } + return false; +} +static bool do_move(void) +/* Actually execute the move to the new location and dwarf movement */ +{ /* Can't leave cave once it's closing (except by main office). */ if (OUTSID(game.newloc) && game.newloc != 0 && game.closng) { rspeak(EXIT_CLOSED); @@ -1009,216 +1095,176 @@ static bool do_command() if (!dwarfmove()) croak(); - /* Describe the current location and (maybe) get next command. */ + if (game.loc == LOC_NOWHERE) + croak(); + + /* The easiest way to get killed is to fall into a pit in + * pitch darkness. */ + if (!FORCED(game.loc) && DARK(game.loc) && game.wzdark && PCT(35)) { // FIXME: magic number + rspeak(PIT_FALL); + game.oldlc2 = game.loc; + croak(); + return false; + } + + return true; +} + +static bool do_command() +/* Get and execute a command */ +{ + static command_t command; + clear_command(&command); + + /* Describe the current location and (maybe) get next command. */ + while (command.state != EXECUTED) { + describe_location(); - for (;;) { - if (game.loc == 0) - croak(); - const char* msg = locations[game.loc].description.small; - if (MOD(game.abbrev[game.loc], game.abbnum) == 0 || - msg == 0) - msg = locations[game.loc].description.big; - if (!FORCED(game.loc) && DARK(game.loc)) { - /* The easiest way to get killed is to fall into a pit in - * pitch darkness. */ - if (game.wzdark && PCT(35)) { - rspeak(PIT_FALL); - game.oldlc2 = game.loc; - croak(); - continue; /* back to top of main interpreter loop */ - } - msg = arbitrary_messages[PITCH_DARK]; - } - if (TOTING(BEAR)) - rspeak(TAME_BEAR); - speak(msg); if (FORCED(game.loc)) { playermove(HERE); return true; } - if (game.loc == LOC_Y2 && PCT(25) && !game.closng) - rspeak(SAYS_PLUGH); listobjects(); -Lclearobj: - game.oldobj = command.obj; - -L2600: - checkhints(); - - /* If closing time, check for any objects being toted with - * game.prop < 0 and stash them. This way objects won't be - * described until they've been picked up and put down - * separate from their respective piles. */ - if (game.closed) { - if (game.prop[OYSTER] < 0 && TOTING(OYSTER)) - pspeak(OYSTER, look, 1, true); - for (size_t i = 1; i <= NOBJECTS; i++) { - if (TOTING(i) && game.prop[i] < 0) - game.prop[i] = STASHED(i); + /* Command not yet given; keep getting commands from user + * until valid command is both given and executed. */ + clear_command(&command); + while (command.state <= GIVEN) { + + if (game.closed) { + /* If closing time, check for any objects being toted with + * game.prop < 0 and stash them. This way objects won't be + * described until they've been picked up and put down + * separate from their respective piles. */ + if (game.prop[OYSTER] < 0 && TOTING(OYSTER)) + pspeak(OYSTER, look, true, 1); + for (size_t i = 1; i <= NOBJECTS; i++) { + if (TOTING(i) && game.prop[i] < 0) + game.prop[i] = STASHED(i); + } } - } - game.wzdark = DARK(game.loc); - if (game.knfloc > 0 && game.knfloc != game.loc) - game.knfloc = 0; - /* This is where we get a new command from the user */ - char* input; - - for (;;) { - input = get_input(); - if (input == NULL) - return (false); - if (word_count(input) > 2) { - rspeak(TWO_WORDS); - free(input); - continue; - } - if (strcmp(input, "") != 0) - break; - free(input); - } + /* Check to see if the room is dark. If the knife is here, + * and it's dark, the knife permanently disappears */ + game.wzdark = DARK(game.loc); + if (game.knfloc != LOC_NOWHERE && game.knfloc != game.loc) + game.knfloc = LOC_NOWHERE; - strncpy(inputbuf, input, LINESIZE - 1); - free(input); + /* Check some for hints, get input from user, increment + * turn, and pre-process commands. Keep going until + * pre-processing is done. */ + while ( command.state < PREPROCESSED ) { + checkhints(); - tokenize(inputbuf, &command); + /* Get command input from user */ + if (!get_command_input(&command)) + return false; - packed_to_token(command.wd1, word1); - packed_to_token(command.wd2, word2); - command.id1 = get_vocab_id(word1); - command.id2 = get_vocab_id(word2); - - //command = get_command_input(); -L2607: - ++game.turns; - - /* If a turn threshold has been met, apply penalties and tell - * the player about it. */ - for (int i = 0; i < NTHRESHOLDS; ++i) { - if (game.turns == turn_thresholds[i].threshold + 1) { - game.trnluz += turn_thresholds[i].point_loss; - speak(turn_thresholds[i].message); + ++game.turns; + preprocess_command(&command); } - } - if (command.verb == SAY && command.id2 != WORD_NOT_FOUND && command.id2 != WORD_EMPTY) - command.verb = 0; - if (command.verb == SAY) { - command.part = transitive; - goto Laction; - } - if (closecheck()) { - if (game.closed) + /* check if game is closed, and exit if it is */ + if (closecheck() ) return true; - } else - lampcheck(); - if (command.id1 == ENTER && (command.id2 == STREAM || - command.id2 == PROMOTE_WORD(WATER))) { - if (LIQLOC(game.loc) == WATER) { - rspeak(FEET_WET); - } else { - rspeak(WHERE_QUERY); - } - goto Lclearobj; - } - if (command.id1 == ENTER && command.id2 != WORD_NOT_FOUND && command.id2 != WORD_EMPTY) { - /* command.wd1 = command.wd2; */ - /* wordclear(&command.wd2); */ - command.id1 = command.id2; - command.id2 = WORD_EMPTY; - } else { - /* FIXME: Magic numbers related to vocabulary */ - if (!((command.id1 != PROMOTE_WORD(WATER) && command.id1 != PROMOTE_WORD(OIL)) || - (command.id2 != PROMOTE_WORD(PLANT) && command.id2 != PROMOTE_WORD(DOOR)))) { - if (AT(DEMOTE_WORD(command.id2))) - command.wd2 = token_to_packed("POUR"); - } - if (command.id1 == PROMOTE_WORD(CAGE) && command.id2 == PROMOTE_WORD(BIRD) && HERE(CAGE) && HERE(BIRD)) - command.wd1 = token_to_packed("CATCH"); - } -L2620: - if (wordeq(command.wd1, token_to_packed("WEST"))) { - ++game.iwest; - if (game.iwest == 10) - rspeak(W_IS_WEST); - } - if (wordeq(command.wd1, token_to_packed("GO")) && !wordempty(command.wd2)) { - if (++igo == 10) - rspeak(GO_UNNEEDED); - } -Lookup: - packed_to_token(command.wd1, word1); - defn = get_vocab_id(word1); - if (defn == WORD_NOT_FOUND) { - /* Gee, I don't understand. */ - if (fallback_handler(command)) - continue; - sspeak(DONT_KNOW, command.raw1); - goto L2600; - } - /* FIXME: magic numbers related to vocabulary */ - kmod = MOD(defn, 1000); - switch (defn / 1000) { - case 0: - playermove(kmod); - return true; - case 1: - command.part = unknown; - command.obj = kmod; - break; - case 2: - command.part = intransitive; - command.verb = kmod; - break; - case 3: - speak(specials[kmod].message); - goto Lclearobj; - default: - BUG(VOCABULARY_TYPE_N_OVER_1000_NOT_BETWEEN_0_AND_3); // LCOV_EXCL_LINE - } + /* loop until all words in command are procesed */ + while (command.state == PREPROCESSED ) { + command.state = PROCESSING; -Laction: - switch (action(&command)) { - case GO_TERMINATE: - return true; - case GO_MOVE: - playermove(NUL); - return true; - case GO_TOP: - continue; /* back to top of main interpreter loop */ - case GO_CLEAROBJ: - goto Lclearobj; - case GO_CHECKHINT: - goto L2600; - case GO_CHECKFOO: - goto L2607; - case GO_LOOKUP: - goto Lookup; - case GO_WORD2: - /* Get second word for analysis. */ - command.wd1 = command.wd2; - strncpy(command.raw1, command.raw2, LINESIZE - 1); - wordclear(&command.wd2); - command.raw2[0] = '\0'; - goto L2620; - case GO_UNKNOWN: - /* Random intransitive verbs come here. Clear obj just in case - * (see attack()). */ - command.raw1[0] = toupper(command.raw1[0]); - sspeak(DO_WHAT, command.raw1); - command.obj = 0; - goto L2600; - case GO_DWARFWAKE: - /* Oh dear, he's disturbed the dwarves. */ - rspeak(DWARVES_AWAKEN); - terminate(endgame); - default: - BUG(ACTION_RETURNED_PHASE_CODE_BEYOND_END_OF_SWITCH); // LCOV_EXCL_LINE - } - } + if (command.word[0].id == WORD_NOT_FOUND) { + /* Gee, I don't understand. */ + sspeak(DONT_KNOW, command.word[0].raw); + clear_command(&command); + continue; + } + + /* Give user hints of shortcuts */ + if (strncasecmp(command.word[0].raw, "west", sizeof("west")) == 0) { + if (++game.iwest == 10) + rspeak(W_IS_WEST); + } + if (strncasecmp(command.word[0].raw, "go", sizeof("go")) == 0 && command.word[1].id != WORD_EMPTY) { + if (++game.igo == 10) + rspeak(GO_UNNEEDED); + } + + switch (command.word[0].type) { + case MOTION: + playermove(command.word[0].id); + command.state = EXECUTED; + continue; + case OBJECT: + command.part = unknown; + command.obj = command.word[0].id; + break; + case ACTION: + if (command.word[1].type == NUMERIC) + command.part = transitive; + else + command.part = intransitive; + command.verb = command.word[0].id; + break; + case NUMERIC: + if (!settings.oldstyle) { + sspeak(DONT_KNOW, command.word[0].raw); + clear_command(&command); + continue; + } + break; + default: // LCOV_EXCL_LINE + BUG(VOCABULARY_TYPE_N_OVER_1000_NOT_BETWEEN_0_AND_3); // LCOV_EXCL_LINE + } + + switch (action(command)) { + case GO_TERMINATE: + command.state = EXECUTED; + break; + case GO_MOVE: + playermove(NUL); + command.state = EXECUTED; + break; + case GO_WORD2: +#ifdef GDEBUG + printf("Word shift\n"); +#endif /* GDEBUG */ + /* Get second word for analysis. */ + command.word[0] = command.word[1]; + command.word[1] = empty_command_word; + command.state = PREPROCESSED; + break; + case GO_UNKNOWN: + /* Random intransitive verbs come here. Clear obj just in case + * (see attack()). */ + command.word[0].raw[0] = toupper(command.word[0].raw[0]); + sspeak(DO_WHAT, command.word[0].raw); + command.obj = NO_OBJECT; + + /* object cleared; we need to go back to the preprocessing step */ + command.state = GIVEN; + break; + case GO_CHECKHINT: // FIXME: re-name to be more contextual; this was previously a label + command.state = GIVEN; + break; + case GO_DWARFWAKE: + /* Oh dear, he's disturbed the dwarves. */ + rspeak(DWARVES_AWAKEN); + terminate(endgame); + case GO_CLEAROBJ: // FIXME: re-name to be more contextual; this was previously a label + clear_command(&command); + break; + case GO_TOP: // FIXME: re-name to be more contextual; this was previously a label + break; + default: // LCOV_EXCL_LINE + BUG(ACTION_RETURNED_PHASE_CODE_BEYOND_END_OF_SWITCH); // LCOV_EXCL_LINE + } + } /* while command has nob been fully processed */ + } /* while command is not yet given */ + } /* while command is not executed */ + + /* command completely executed; we return true. */ + return true; } /* end */