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
23 // Global variables for use in functions below that can gradually disappear as code is cleaned up
26 static char INLINE[LINESIZE + 1];
29 // Storage for what comes out of the database
35 long LINES[LINSIZ + 1];
36 long TRAVEL[TRVSIZ + 1];
37 long KTAB[TABSIZ + 1];
38 long ATAB[TABSIZ + 1];
39 long PLAC[NOBJECTS + 1];
40 long FIXD[NOBJECTS + 1];
41 long ACTSPK[VRBSIZ + 1];
43 static long GETTXT(long SKIP, long ONEWRD, long UPPER)
45 /* Take characters from an input line and pack them into 30-bit words.
46 * Skip says to skip leading blanks. ONEWRD says stop if we come to a
47 * blank. UPPER says to map all letters to uppercase. If we reach the
48 * end of the line, the word is filled up with blanks (which encode as 0's).
49 * If we're already at end of line when GETTXT is called, we return -1. */
52 static long SPLITTING = -1;
54 if (LNPOSN != SPLITTING)
60 if ((!SKIP) || INLINE[LNPOSN] != 0)
66 for (int I = 1; I <= TOKLEN; I++) {
68 if (LNPOSN > LNLENG || (ONEWRD && INLINE[LNPOSN] == 0))
70 char current = INLINE[LNPOSN];
73 if (UPPER && current >= 37)
74 current = current - 26;
75 TEXT = TEXT + current;
79 if (SPLITTING != LNPOSN) {
85 TEXT = TEXT + current - 63;
93 static void MAPLIN(FILE *OPENED)
95 /* Read a line of input, from the specified input source,
96 * translate the chars to integers in the range 0-126 and store
97 * them in the common array "INLINE". Integer values are as follows:
98 * 0 = space [ASCII CODE 40 octal, 32 decimal]
99 * 1-2 = !" [ASCII 41-42 octal, 33-34 decimal]
100 * 3-10 = '()*+,-. [ASCII 47-56 octal, 39-46 decimal]
101 * 11-36 = upper-case letters
102 * 37-62 = lower-case letters
103 * 63 = percent (%) [ASCII 45 octal, 37 decimal]
104 * 64-73 = digits, 0 through 9
105 * Remaining characters can be translated any way that is convenient;
106 * The "TYPE" routine below is used to map them back to characters when
107 * necessary. The above mappings are required so that certain special
108 * characters are known to fit in 6 bits and/or can be easily spotted.
109 * Array elements beyond the end of the line should be filled with 0,
110 * and LNLENG should be set to the index of the last character.
112 * If the data file uses a character other than space (e.g., tab) to
113 * separate numbers, that character should also translate to 0.
115 * This procedure may use the map1,map2 arrays to maintain static data for
116 * the mapping. MAP2(1) is set to 0 when the program starts
117 * and is not changed thereafter unless the routines on this page choose
121 if (NULL == fgets(INLINE + 1, sizeof(INLINE) - 1, OPENED)) {
122 printf("Failed fgets()\n");
124 } while (!feof(OPENED) && INLINE[1] == '#');
127 for (size_t i = 1; i < sizeof(INLINE) && INLINE[i] != 0; ++i) {
128 char val = INLINE[i];
129 INLINE[i] = ascii_to_advent[(unsigned)val];
136 static long GETNUM(FILE *source)
138 /* Obtain the next integer from an input line. If K>0, we first read a
139 * new input line from a file; if K<0, we read a line from the keyboard;
140 * if K=0 we use a line that has already been read (and perhaps partially
141 * scanned). If we're at the end of the line or encounter an illegal
142 * character (not a digit, hyphen, or blank), we return 0. */
144 long DIGIT, GETNUM, SIGN;
146 if (source != NULL) MAPLIN(source);
149 while (INLINE[LNPOSN] == 0) {
150 if (LNPOSN > LNLENG) return (GETNUM);
154 if (INLINE[LNPOSN] != 9) {
160 while (!(LNPOSN > LNLENG || INLINE[LNPOSN] == 0)) {
161 DIGIT = INLINE[LNPOSN] - 64;
162 if (DIGIT < 0 || DIGIT > 9) {
166 GETNUM = GETNUM * 10 + DIGIT;
170 GETNUM = GETNUM * SIGN;
175 /* Sections 1, 2, 5, 6, 10, 14. Read messages and set up pointers. */
176 static void read_messages(FILE* database, long sect)
182 loc = GETNUM(database);
183 if (LNLENG >= LNPOSN + 70)
184 BUG(MESSAGE_LINE_GT_70_CHARACTERS);
185 if (loc == -1) return;
187 BUG(NULL_LINE_IN_MESSAGE);
191 BUG(TOO_MANY_WORDS_OF_MESSAGES);
192 LINES[KK] = GETTXT(false, false, false);
193 } while (LINES[KK] != -1);
195 if (loc == OLDLOC) continue;
198 if (sect == 10 || sect == 14) {
199 /* now parsed from YAML */
203 /* Now handled in YAML */
207 /* Now handled in YAML */
211 /* Now handled in YAML */
217 /* The stuff for section 3 is encoded here. Each "from-location" gets a
218 * contiguous section of the "TRAVEL" array. Each entry in travel is
219 * newloc*1000 + KEYWORD (from section 4, motion verbs), and is negated if
220 * this is the last entry for this location. KEY(N) is the index in travel
221 * of the first option at location N. */
222 static void read_section3_stuff(FILE* database)
225 while ((loc = GETNUM(database)) != -1) {
226 long newloc = GETNUM(NULL);
231 TRAVEL[TRVS - 1] = -TRAVEL[TRVS - 1];
233 while ((L = GETNUM(NULL)) != 0) {
234 TRAVEL[TRVS] = newloc * 1000 + L;
237 BUG(TOO_MANY_TRAVEL_OPTIONS);
239 TRAVEL[TRVS - 1] = -TRAVEL[TRVS - 1];
243 /* Here we read in the vocabulary. KTAB(N) is the word number, ATAB(N) is
244 * the corresponding word. The -1 at the end of section 4 is left in KTAB
245 * as an end-marker. */
246 static void read_vocabulary(FILE* database)
248 for (TABNDX = 1; TABNDX <= TABSIZ; TABNDX++) {
249 KTAB[TABNDX] = GETNUM(database);
250 if (KTAB[TABNDX] == -1) return;
251 ATAB[TABNDX] = GETTXT(true, true, true);
253 BUG(TOO_MANY_VOCABULARY_WORDS);
256 /* Read in the initial locations for each object. Also the immovability info.
257 * plac contains initial locations of objects. FIXD is -1 for immovable
258 * objects (including the snake), or = second loc for two-placed objects. */
259 static void read_initial_locations(FILE* database)
262 while ((OBJ = GETNUM(database)) != -1) {
263 PLAC[OBJ] = GETNUM(NULL);
264 FIXD[OBJ] = GETNUM(NULL);
268 /* Read default message numbers for action verbs, store in ACTSPK. */
269 static void read_action_verb_message_nr(FILE* database)
272 while ((verb = GETNUM(database)) != -1) {
273 ACTSPK[verb] = GETNUM(NULL);
277 /* Read info about available liquids and other conditions. */
278 static void read_conditions(FILE* database)
281 while ((K = GETNUM(database)) != -1) {
283 while ((loc = GETNUM(NULL)) != 0) {
284 continue; /* COND is no longer used */
290 /* Read data for hints. */
291 static void read_hints(FILE* database)
294 while ((K = GETNUM(database)) != -1) {
295 for (int I = 1; I <= 4; I++) {
296 /* consume - actual array-building now done in YAML. */
302 /* Read the sound/text info */
303 static void read_sound_text(FILE* database)
306 while ((K = GETNUM(database)) != -1) {
307 long KK = GETNUM(NULL);
308 long I = GETNUM(NULL);
309 /* this stuff is in YAML now */
314 static int read_database(FILE* database)
316 /* Clear out the various text-pointer arrays. All text is stored
317 * in array lines; each line is preceded by a word pointing to
318 * the next pointer (i.e. the word following the end of the
319 * line). The pointer is negative if this is first line of a
320 * message. The text-pointer arrays contain indices of
321 * pointer-words in lines. PTEXT(N) points to
322 * message for game.prop(N)=0. Successive prop messages are
323 * found by chasing pointers. */
324 for (int I = 1; I <= LOCSIZ; I++) {
332 /* Start new data section. Sect is the section number. */
335 long sect = GETNUM(database);
341 read_messages(database, sect);
344 read_messages(database, sect);
347 read_section3_stuff(database);
350 read_vocabulary(database);
353 read_messages(database, sect);
356 read_messages(database, sect);
359 read_initial_locations(database);
362 read_action_verb_message_nr(database);
365 read_conditions(database);
368 read_messages(database, sect);
371 read_hints(database);
376 read_sound_text(database);
379 read_messages(database, sect);
382 BUG(INVALID_SECTION_NUMBER_IN_DATABASE);
387 /* Finish constructing internal data format */
389 /* Having read in the database, certain things are now constructed.
390 * game.propS are set to zero. The PLAC and FIXD arrays are used
391 * to set up game.atloc(N) as the first object at location N, and
392 * game.link(OBJ) as the next object at the same location as OBJ.
393 * (OBJ>NOBJECTS indicates that game.fixed(OBJ-NOBJECTS)=LOC; game.link(OBJ) is
394 * still the correct link to use.) game.abbrev is zeroed; it controls
395 * whether the abbreviated description is printed. Counts modulo 5
396 * unless "LOOK" is used. */
398 static void write_1d(FILE* header_file, long array[], long dim, const char* varname)
400 fprintf(header_file, "LOCATION long %s[] INITIALIZE(= {\n", varname);
401 for (int i = 0; i < dim; ++i) {
404 fprintf(header_file, "\n");
405 fprintf(header_file, " ");
407 fprintf(header_file, "%ld, ", array[i]);
409 fprintf(header_file, "\n});\n");
412 static void write_file(FILE* header_file)
414 fprintf(header_file, "#ifndef DATABASE_H\n");
415 fprintf(header_file, "#define DATABASE_H\n");
416 fprintf(header_file, "\n");
418 fprintf(header_file, "#include \"common.h\"\n");
419 fprintf(header_file, "#define TABSIZ 330\n");
420 fprintf(header_file, "#define TOKLEN %d\n", TOKLEN);
421 fprintf(header_file, "\n");
423 fprintf(header_file, "\n");
424 fprintf(header_file, "#ifdef DEFINE_GLOBALS_FROM_INCLUDES\n");
425 fprintf(header_file, "#define LOCATION\n");
426 fprintf(header_file, "#define INITIALIZE(...) __VA_ARGS__\n");
427 fprintf(header_file, "#else\n");
428 fprintf(header_file, "#define LOCATION extern\n");
429 fprintf(header_file, "#define INITIALIZE(...)\n");
430 fprintf(header_file, "#endif\n");
431 fprintf(header_file, "\n");
434 write_1d(header_file, KEY, LOCSIZ + 1, "KEY");
435 write_1d(header_file, TRAVEL, TRVSIZ + 1, "TRAVEL");
436 write_1d(header_file, KTAB, TABSIZ + 1, "KTAB");
437 write_1d(header_file, ATAB, TABSIZ + 1, "ATAB");
438 write_1d(header_file, PLAC, NOBJECTS + 1, "PLAC");
439 write_1d(header_file, FIXD, NOBJECTS + 1, "FIXD");
440 write_1d(header_file, ACTSPK, VRBSIZ + 1, "ACTSPK");
442 fprintf(header_file, "#undef LOCATION\n");
443 fprintf(header_file, "#undef INITIALIZE\n");
444 fprintf(header_file, "#endif\n");
447 void bug(enum bugtype num, const char *error_string)
449 fprintf(stderr, "Fatal error %d, %s.\n", num, error_string);
455 FILE* database = fopen("adventure.text", "r");
456 read_database(database);
459 FILE* header_file = fopen("database.h", "w");
460 write_file(header_file);
463 return (EXIT_SUCCESS);