2 * The dungeon compiler. Turns adventure.text into a set of C initializers
3 * defining (mostly) invariant state. A couple of slots are messed with
22 // Global variables for use in functions below that can gradually disappear as code is cleaned up
25 static char INLINE[LINESIZE + 1];
28 // Storage for what comes out of the database
34 long LINES[LINSIZ + 1];
35 long TRAVEL[TRVSIZ + 1];
36 long KTAB[TABSIZ + 1];
37 long ATAB[TABSIZ + 1];
38 long PLAC[NOBJECTS + 1];
39 long FIXD[NOBJECTS + 1];
40 long ACTSPK[VRBSIZ + 1];
42 static long GETTXT(long SKIP, long ONEWRD, long UPPER)
44 /* Take characters from an input line and pack them into 30-bit words.
45 * Skip says to skip leading blanks. ONEWRD says stop if we come to a
46 * blank. UPPER says to map all letters to uppercase. If we reach the
47 * end of the line, the word is filled up with blanks (which encode as 0's).
48 * If we're already at end of line when GETTXT is called, we return -1. */
51 static long SPLITTING = -1;
53 if (LNPOSN != SPLITTING)
59 if ((!SKIP) || INLINE[LNPOSN] != 0)
65 for (int I = 1; I <= TOKLEN; I++) {
67 if (LNPOSN > LNLENG || (ONEWRD && INLINE[LNPOSN] == 0))
69 char current = INLINE[LNPOSN];
72 if (UPPER && current >= 37)
73 current = current - 26;
74 TEXT = TEXT + current;
78 if (SPLITTING != LNPOSN) {
84 TEXT = TEXT + current - 63;
92 static void MAPLIN(FILE *OPENED)
94 /* Read a line of input, from the specified input source,
95 * translate the chars to integers in the range 0-126 and store
96 * them in the common array "INLINE". Integer values are as follows:
97 * 0 = space [ASCII CODE 40 octal, 32 decimal]
98 * 1-2 = !" [ASCII 41-42 octal, 33-34 decimal]
99 * 3-10 = '()*+,-. [ASCII 47-56 octal, 39-46 decimal]
100 * 11-36 = upper-case letters
101 * 37-62 = lower-case letters
102 * 63 = percent (%) [ASCII 45 octal, 37 decimal]
103 * 64-73 = digits, 0 through 9
104 * Remaining characters can be translated any way that is convenient;
105 * The "TYPE" routine below is used to map them back to characters when
106 * necessary. The above mappings are required so that certain special
107 * characters are known to fit in 6 bits and/or can be easily spotted.
108 * Array elements beyond the end of the line should be filled with 0,
109 * and LNLENG should be set to the index of the last character.
111 * If the data file uses a character other than space (e.g., tab) to
112 * separate numbers, that character should also translate to 0.
114 * This procedure may use the map1,map2 arrays to maintain static data for
115 * the mapping. MAP2(1) is set to 0 when the program starts
116 * and is not changed thereafter unless the routines on this page choose
120 if (NULL == fgets(INLINE + 1, sizeof(INLINE) - 1, OPENED)) {
121 printf("Failed fgets()\n");
123 } while (!feof(OPENED) && INLINE[1] == '#');
126 for (size_t i = 1; i < sizeof(INLINE) && INLINE[i] != 0; ++i) {
127 char val = INLINE[i];
128 INLINE[i] = ascii_to_advent[(unsigned)val];
135 static long GETNUM(FILE *source)
137 /* Obtain the next integer from an input line. If K>0, we first read a
138 * new input line from a file; if K<0, we read a line from the keyboard;
139 * if K=0 we use a line that has already been read (and perhaps partially
140 * scanned). If we're at the end of the line or encounter an illegal
141 * character (not a digit, hyphen, or blank), we return 0. */
143 long DIGIT, GETNUM, SIGN;
145 if (source != NULL) MAPLIN(source);
148 while (INLINE[LNPOSN] == 0) {
149 if (LNPOSN > LNLENG) return (GETNUM);
153 if (INLINE[LNPOSN] != 9) {
159 while (!(LNPOSN > LNLENG || INLINE[LNPOSN] == 0)) {
160 DIGIT = INLINE[LNPOSN] - 64;
161 if (DIGIT < 0 || DIGIT > 9) {
165 GETNUM = GETNUM * 10 + DIGIT;
169 GETNUM = GETNUM * SIGN;
174 /* Sections 1, 2, 5, 6, 10, 14. Read messages and set up pointers. */
175 static void read_messages(FILE* database, long sect)
181 loc = GETNUM(database);
182 if (LNLENG >= LNPOSN + 70)
183 BUG(MESSAGE_LINE_GT_70_CHARACTERS);
184 if (loc == -1) return;
186 BUG(NULL_LINE_IN_MESSAGE);
190 BUG(TOO_MANY_WORDS_OF_MESSAGES);
191 LINES[KK] = GETTXT(false, false, false);
192 } while (LINES[KK] != -1);
194 if (loc == OLDLOC) continue;
197 if (sect == 10 || sect == 14) {
198 /* now parsed from YAML */
202 /* Now handled in YAML */
206 /* Now handled in YAML */
210 /* Now handled in YAML */
216 /* The stuff for section 3 is encoded here. Each "from-location" gets a
217 * contiguous section of the "TRAVEL" array. Each entry in travel is
218 * newloc*1000 + KEYWORD (from section 4, motion verbs), and is negated if
219 * this is the last entry for this location. KEY(N) is the index in travel
220 * of the first option at location N. */
221 static void read_section3_stuff(FILE* database)
224 while ((loc = GETNUM(database)) != -1) {
225 long newloc = GETNUM(NULL);
230 TRAVEL[TRVS - 1] = -TRAVEL[TRVS - 1];
232 while ((L = GETNUM(NULL)) != 0) {
233 TRAVEL[TRVS] = newloc * 1000 + L;
236 BUG(TOO_MANY_TRAVEL_OPTIONS);
238 TRAVEL[TRVS - 1] = -TRAVEL[TRVS - 1];
242 /* Here we read in the vocabulary. KTAB(N) is the word number, ATAB(N) is
243 * the corresponding word. The -1 at the end of section 4 is left in KTAB
244 * as an end-marker. */
245 static void read_vocabulary(FILE* database)
247 for (TABNDX = 1; TABNDX <= TABSIZ; TABNDX++) {
248 KTAB[TABNDX] = GETNUM(database);
249 if (KTAB[TABNDX] == -1) return;
250 ATAB[TABNDX] = GETTXT(true, true, true);
252 BUG(TOO_MANY_VOCABULARY_WORDS);
255 /* Read in the initial locations for each object. Also the immovability info.
256 * plac contains initial locations of objects. FIXD is -1 for immovable
257 * objects (including the snake), or = second loc for two-placed objects. */
258 static void read_initial_locations(FILE* database)
261 while ((OBJ = GETNUM(database)) != -1) {
262 PLAC[OBJ] = GETNUM(NULL);
263 FIXD[OBJ] = GETNUM(NULL);
267 /* Read default message numbers for action verbs, store in ACTSPK. */
268 static void read_action_verb_message_nr(FILE* database)
271 while ((verb = GETNUM(database)) != -1) {
272 ACTSPK[verb] = GETNUM(NULL);
276 /* Read info about available liquids and other conditions. */
277 static void read_conditions(FILE* database)
280 while ((K = GETNUM(database)) != -1) {
282 while ((loc = GETNUM(NULL)) != 0) {
283 continue; /* COND is no longer used */
289 /* Read data for hints. */
290 static void read_hints(FILE* database)
293 while ((K = GETNUM(database)) != -1) {
294 for (int I = 1; I <= 4; I++) {
295 /* consume - actual array-building now done in YAML. */
301 /* Read the sound/text info */
302 static void read_sound_text(FILE* database)
305 while ((K = GETNUM(database)) != -1) {
306 long KK = GETNUM(NULL);
307 long I = GETNUM(NULL);
308 /* this stuff is in YAML now */
313 static int read_database(FILE* database)
315 /* Clear out the various text-pointer arrays. All text is stored
316 * in array lines; each line is preceded by a word pointing to
317 * the next pointer (i.e. the word following the end of the
318 * line). The pointer is negative if this is first line of a
319 * message. The text-pointer arrays contain indices of
320 * pointer-words in lines. PTEXT(N) points to
321 * message for game.prop(N)=0. Successive prop messages are
322 * found by chasing pointers. */
323 for (int I = 1; I <= LOCSIZ; I++) {
331 /* Start new data section. Sect is the section number. */
334 long sect = GETNUM(database);
340 read_messages(database, sect);
343 read_messages(database, sect);
346 read_section3_stuff(database);
349 read_vocabulary(database);
352 read_messages(database, sect);
355 read_messages(database, sect);
358 read_initial_locations(database);
361 read_action_verb_message_nr(database);
364 read_conditions(database);
367 read_messages(database, sect);
370 read_hints(database);
375 read_sound_text(database);
378 read_messages(database, sect);
381 BUG(INVALID_SECTION_NUMBER_IN_DATABASE);
386 /* Finish constructing internal data format */
388 /* Having read in the database, certain things are now constructed.
389 * game.propS are set to zero. The PLAC and FIXD arrays are used
390 * to set up game.atloc(N) as the first object at location N, and
391 * game.link(OBJ) as the next object at the same location as OBJ.
392 * (OBJ>NOBJECTS indicates that game.fixed(OBJ-NOBJECTS)=LOC; game.link(OBJ) is
393 * still the correct link to use.) game.abbrev is zeroed; it controls
394 * whether the abbreviated description is printed. Counts modulo 5
395 * unless "LOOK" is used. */
397 static void write_1d(FILE* header_file, long array[], long dim, const char* varname)
399 fprintf(header_file, "LOCATION long %s[] INITIALIZE(= {\n", varname);
400 for (int i = 0; i < dim; ++i) {
403 fprintf(header_file, "\n");
404 fprintf(header_file, " ");
406 fprintf(header_file, "%ld, ", array[i]);
408 fprintf(header_file, "\n});\n");
411 static void write_file(FILE* header_file)
413 fprintf(header_file, "#ifndef DATABASE_H\n");
414 fprintf(header_file, "#define DATABASE_H\n");
415 fprintf(header_file, "\n");
417 fprintf(header_file, "#include \"common.h\"\n");
418 fprintf(header_file, "#define TABSIZ 330\n");
419 fprintf(header_file, "#define TOKLEN %d\n", TOKLEN);
420 fprintf(header_file, "\n");
422 fprintf(header_file, "\n");
423 fprintf(header_file, "#ifdef DEFINE_GLOBALS_FROM_INCLUDES\n");
424 fprintf(header_file, "#define LOCATION\n");
425 fprintf(header_file, "#define INITIALIZE(...) __VA_ARGS__\n");
426 fprintf(header_file, "#else\n");
427 fprintf(header_file, "#define LOCATION extern\n");
428 fprintf(header_file, "#define INITIALIZE(...)\n");
429 fprintf(header_file, "#endif\n");
430 fprintf(header_file, "\n");
433 write_1d(header_file, KEY, LOCSIZ + 1, "KEY");
434 write_1d(header_file, TRAVEL, TRVSIZ + 1, "TRAVEL");
435 write_1d(header_file, KTAB, TABSIZ + 1, "KTAB");
436 write_1d(header_file, ATAB, TABSIZ + 1, "ATAB");
437 write_1d(header_file, PLAC, NOBJECTS + 1, "PLAC");
438 write_1d(header_file, FIXD, NOBJECTS + 1, "FIXD");
439 write_1d(header_file, ACTSPK, VRBSIZ + 1, "ACTSPK");
441 fprintf(header_file, "#undef LOCATION\n");
442 fprintf(header_file, "#undef INITIALIZE\n");
443 fprintf(header_file, "#endif\n");
446 void bug(enum bugtype num, const char *error_string)
448 fprintf(stderr, "Fatal error %d, %s.\n", num, error_string);
454 FILE* database = fopen("adventure.text", "r");
455 read_database(database);
458 FILE* header_file = fopen("database.h", "w");
459 write_file(header_file);
462 return (EXIT_SUCCESS);