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open-adventure/dungeon.c
NHOrus f1f7cfd4e9 Localizing variables
2017-06-15 16:16:21 +03:00

591 lines
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C
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/*
* The dungeon compiler. Turns adventure.text into a set of C initializers
* defining (mostly) invariant state. A couple of slots are messed with
* at runtime.
*/
#include "common.h"
#define LINESIZE 100
#define RTXSIZ 277
#define CLSMAX 12
#define LINSIZ 12600
#define TRNSIZ 5
#define TABSIZ 330
#define VRBSIZ 35
#define TRVSIZ 885
#define TOKLEN 5
#define HINTLEN 5
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <unistd.h>
// Global variables for use in functions below that can gradually disappear as code is cleaned up
static long LNLENG;
static long LNPOSN;
static char INLINE[LINESIZE+1];
static long OLDLOC;
// Storage for what comes out of the database
long LINUSE;
long TRVS;
long CLSSES;
long TRNVLS;
long TABNDX;
long HNTMAX;
long PTEXT[NOBJECTS+1];
long RTEXT[RTXSIZ + 1];
long CTEXT[CLSMAX + 1];
long OBJSND[NOBJECTS+1];
long OBJTXT[NOBJECTS+1];
long STEXT[LOCSIZ + 1];
long LTEXT[LOCSIZ + 1];
long COND[LOCSIZ + 1];
long KEY[LOCSIZ + 1];
long LOCSND[LOCSIZ + 1];
long LINES[LINSIZ + 1];
long CVAL[CLSMAX + 1];
long TTEXT[TRNSIZ + 1];
long TRNVAL[TRNSIZ + 1];
long TRAVEL[TRVSIZ + 1];
long KTAB[TABSIZ + 1];
long ATAB[TABSIZ + 1];
long PLAC[NOBJECTS+1];
long FIXD[NOBJECTS+1];
long ACTSPK[VRBSIZ + 1];
long HINTS[HNTSIZ + 1][HINTLEN];
static bool is_set(long var, long position)
{
long mask = 1l << position;
bool result = (var & mask) == mask;
return(result);
}
static long GETTXT(long SKIP,long ONEWRD, long UPPER)
{
/* Take characters from an input line and pack them into 30-bit words.
* Skip says to skip leading blanks. ONEWRD says stop if we come to a
* blank. UPPER says to map all letters to uppercase. If we reach the
* end of the line, the word is filled up with blanks (which encode as 0's).
* If we're already at end of line when GETTXT is called, we return -1. */
long TEXT;
static long SPLITTING = -1;
if(LNPOSN != SPLITTING)
SPLITTING = -1;
TEXT= -1;
while (true) {
if(LNPOSN > LNLENG)
return(TEXT);
if((!SKIP) || INLINE[LNPOSN] != 0)
break;
LNPOSN=LNPOSN+1;
}
TEXT=0;
for (int I=1; I<=TOKLEN; I++) {
TEXT=TEXT*64;
if(LNPOSN > LNLENG || (ONEWRD && INLINE[LNPOSN] == 0))
continue;
char current=INLINE[LNPOSN];
if(current < 63) {
SPLITTING = -1;
if(UPPER && current >= 37)
current=current-26;
TEXT=TEXT+current;
LNPOSN=LNPOSN+1;
continue;
}
if(SPLITTING != LNPOSN) {
TEXT=TEXT+63;
SPLITTING = LNPOSN;
continue;
}
TEXT=TEXT+current-63;
SPLITTING = -1;
LNPOSN=LNPOSN+1;
}
return(TEXT);
}
static void BUG(long NUM) {
/* The following conditions are currently considered fatal bugs. Numbers < 20
* are detected while reading the database; the others occur at "run time".
* 0 Message line > 70 characters
* 1 Null line in message
* 2 Too many words of messages
* 3 Too many travel options
* 4 Too many vocabulary words
* 5 Required vocabulary word not found
* 6 Too many RTEXT messages
* 7 Too many hints
* 8 Location has cond bit being set twice
* 9 Invalid section number in database
* 10 Too many locations
* 11 Too many class or turn messages
* 20 Special travel (500>L>300) exceeds goto list
* 21 Ran off end of vocabulary table
* 22 Vocabulary type (N/1000) not between 0 and 3
* 23 Intransitive action verb exceeds goto list
* 24 Transitive action verb exceeds goto list
* 25 Conditional travel entry with no alternative
* 26 Location has no travel entries
* 27 Hint number exceeds goto list
* 28 Invalid month returned by date function
* 29 Too many parameters given to SETPRM */
fprintf(stderr, "Fatal error %ld. See source code for interpretation.\n", NUM);
exit(EXIT_FAILURE);
}
static void MAPLIN(FILE *OPENED) {
/* Read a line of input, from the specified input source,
* translate the chars to integers in the range 0-126 and store
* them in the common array "INLINE". Integer values are as follows:
* 0 = space [ASCII CODE 40 octal, 32 decimal]
* 1-2 = !" [ASCII 41-42 octal, 33-34 decimal]
* 3-10 = '()*+,-. [ASCII 47-56 octal, 39-46 decimal]
* 11-36 = upper-case letters
* 37-62 = lower-case letters
* 63 = percent (%) [ASCII 45 octal, 37 decimal]
* 64-73 = digits, 0 through 9
* Remaining characters can be translated any way that is convenient;
* The "TYPE" routine below is used to map them back to characters when
* necessary. The above mappings are required so that certain special
* characters are known to fit in 6 bits and/or can be easily spotted.
* Array elements beyond the end of the line should be filled with 0,
* and LNLENG should be set to the index of the last character.
*
* If the data file uses a character other than space (e.g., tab) to
* separate numbers, that character should also translate to 0.
*
* This procedure may use the map1,map2 arrays to maintain static data for
* the mapping. MAP2(1) is set to 0 when the program starts
* and is not changed thereafter unless the routines on this page choose
* to do so. */
do {
if (NULL == fgets(INLINE + 1, sizeof(INLINE) - 1, OPENED)) {
printf("Failed fgets()\n");
}
}
while (!feof(OPENED) && INLINE[1] == '#');
LNLENG = 0;
for (size_t i = 1; i < sizeof(INLINE) && INLINE[i] != 0; ++i)
{
char val = INLINE[i];
INLINE[i] = ascii_to_advent[(unsigned)val];
if (INLINE[i] != 0)
LNLENG = i;
}
LNPOSN = 1;
}
static long GETNUM(FILE *source) {
/* Obtain the next integer from an input line. If K>0, we first read a
* new input line from a file; if K<0, we read a line from the keyboard;
* if K=0 we use a line that has already been read (and perhaps partially
* scanned). If we're at the end of the line or encounter an illegal
* character (not a digit, hyphen, or blank), we return 0. */
long DIGIT, GETNUM, SIGN;
if(source != NULL) MAPLIN(source);
GETNUM = 0;
while (INLINE[LNPOSN] == 0) {
if (LNPOSN > LNLENG) return(GETNUM);
++LNPOSN;
}
if(INLINE[LNPOSN] != 9)
{
SIGN=1;
}
else
{
SIGN= -1;
LNPOSN=LNPOSN+1;
}
while (!(LNPOSN > LNLENG || INLINE[LNPOSN] == 0))
{
DIGIT=INLINE[LNPOSN]-64;
if(DIGIT < 0 || DIGIT > 9)
{
GETNUM=0;
break;
}
GETNUM=GETNUM*10+DIGIT;
LNPOSN=LNPOSN+1;
}
GETNUM=GETNUM*SIGN;
LNPOSN=LNPOSN+1;
return(GETNUM);
}
/* Sections 1, 2, 5, 6, 10, 14. Read messages and set up pointers. */
static void read_messages(FILE* database, long sect)
{
long KK=LINUSE;
while(true)
{
long loc;
LINUSE=KK;
loc=GETNUM(database);
if(LNLENG >= LNPOSN+70)BUG(0);
if(loc == -1) return;
if(LNLENG < LNPOSN)BUG(1);
do {
KK=KK+1;
if(KK >= LINSIZ)BUG(2);
LINES[KK]=GETTXT(false,false,false);
}
while(LINES[KK] != -1);
LINES[LINUSE]=KK;
if(loc == OLDLOC) continue;
OLDLOC=loc;
LINES[LINUSE]= -KK;
if(sect == 14)
{
TRNVLS=TRNVLS+1;
if(TRNVLS > TRNSIZ)BUG(11);
TTEXT[TRNVLS]=LINUSE;
TRNVAL[TRNVLS]=loc;
continue;
}
if(sect == 10)
{
CLSSES=CLSSES+1;
if(CLSSES > CLSMAX)BUG(11);
CTEXT[CLSSES]=LINUSE;
CVAL[CLSSES]=loc;
continue;
}
if(sect == 6)
{
if(loc > RTXSIZ)BUG(6);
RTEXT[loc]=LINUSE;
continue;
}
if(sect == 5)
{
if(loc > 0 && loc <= NOBJECTS)PTEXT[loc]=LINUSE;
continue;
}
if(loc > LOCSIZ)BUG(10);
if(sect == 1)
{
LTEXT[loc]=LINUSE;
continue;
}
STEXT[loc]=LINUSE;
}
}
/* The stuff for section 3 is encoded here. Each "from-location" gets a
* contiguous section of the "TRAVEL" array. Each entry in travel is
* newloc*1000 + KEYWORD (from section 4, motion verbs), and is negated if
* this is the last entry for this location. KEY(N) is the index in travel
* of the first option at location N. */
static void read_section3_stuff(FILE* database)
{
long loc;
while((loc=GETNUM(database)) != -1)
{
long newloc=GETNUM(NULL);
long L;
if(KEY[loc] == 0)
{
KEY[loc]=TRVS;
}
else
{
TRAVEL[TRVS-1]= -TRAVEL[TRVS-1];
}
while((L=GETNUM(NULL)) != 0)
{
TRAVEL[TRVS]=newloc*1000+L;
TRVS=TRVS+1;
if(TRVS == TRVSIZ)BUG(3);
}
TRAVEL[TRVS-1]= -TRAVEL[TRVS-1];
}
}
/* Here we read in the vocabulary. KTAB(N) is the word number, ATAB(N) is
* the corresponding word. The -1 at the end of section 4 is left in KTAB
* as an end-marker. */
static void read_vocabulary(FILE* database)
{
for (TABNDX=1; TABNDX<=TABSIZ; TABNDX++)
{
KTAB[TABNDX]=GETNUM(database);
if(KTAB[TABNDX] == -1) return;
ATAB[TABNDX]=GETTXT(true,true,true);
} /* end loop */
BUG(4);
}
/* Read in the initial locations for each object. Also the immovability info.
* plac contains initial locations of objects. FIXD is -1 for immovable
* objects (including the snake), or = second loc for two-placed objects. */
static void read_initial_locations(FILE* database)
{
long OBJ;
while((OBJ=GETNUM(database)) != -1)
{
PLAC[OBJ]=GETNUM(NULL);
FIXD[OBJ]=GETNUM(NULL);
}
}
/* Read default message numbers for action verbs, store in ACTSPK. */
static void read_action_verb_message_nr(FILE* database)
{
long verb;
while((verb=GETNUM(database)) != -1)
{
ACTSPK[verb]=GETNUM(NULL);
}
}
/* Read info about available liquids and other conditions, store in COND. */
static void read_conditions(FILE* database)
{
long K;
while((K=GETNUM(database)) != -1)
{
long loc;
while((loc=GETNUM(NULL)) != 0)
{
if(is_set(COND[loc],K)) BUG(8);
COND[loc]=COND[loc] + (1l << K);
}
}
}
/* Read data for hints. */
static void read_hints(FILE* database)
{
long K;
HNTMAX=0;
while((K=GETNUM(database)) != -1)
{
if(K <= 0 || K > HNTSIZ)BUG(7);
for (int I=1; I<=4; I++)
{
HINTS[K][I] =GETNUM(NULL);
} /* end loop */
HNTMAX=(HNTMAX>K ? HNTMAX : K);
}
}
/* Read the sound/text info, store in OBJSND, OBJTXT, LOCSND. */
static void read_sound_text(FILE* database)
{
long K;
while((K=GETNUM(database)) != -1)
{
long KK=GETNUM(NULL);
long I=GETNUM(NULL);
if(I != 0)
{
OBJSND[K]=(KK>0 ? KK : 0);
OBJTXT[K]=(I>0 ? I : 0);
continue;
}
LOCSND[K]=KK;
}
}
static int read_database(FILE* database) {
/* Clear out the various text-pointer arrays. All text is stored in array
* lines; each line is preceded by a word pointing to the next pointer (i.e.
* the word following the end of the line). The pointer is negative if this is
* first line of a message. The text-pointer arrays contain indices of
* pointer-words in lines. STEXT(N) is short description of location N.
* LTEXT(N) is long description. PTEXT(N) points to message for game.prop(N)=0.
* Successive prop messages are found by chasing pointers. RTEXT contains
* section 6's stuff. CTEXT(N) points to a player-class message. TTEXT is for
* section 14. We also clear COND (see description of section 9 for details). */
for (int I=1; I<=NOBJECTS; I++) {
PTEXT[I] = 0;
OBJSND[I] = 0;
OBJTXT[I] = 0;
}
for (int I=1; I<=RTXSIZ; I++) {
RTEXT[I] = 0;
}
for (int I=1; I<=CLSMAX; I++) {
CTEXT[I] = 0;
}
for (int I=1; I<=LOCSIZ; I++) {
STEXT[I] = 0;
LTEXT[I] = 0;
COND[I] = 0;
KEY[I] = 0;
LOCSND[I] = 0;
}
LINUSE = 1;
TRVS = 1;
CLSSES = 0;
TRNVLS = 0;
/* Start new data section. Sect is the section number. */
while(true)
{
long sect=GETNUM(database);
OLDLOC= -1;
switch (sect)
{
case 0: return(0);
case 1: read_messages(database, sect); break;
case 2: read_messages(database, sect); break;
case 3: read_section3_stuff(database); break;
case 4: read_vocabulary(database); break;
case 5: read_messages(database, sect); break;
case 6: read_messages(database, sect); break;
case 7: read_initial_locations(database); break;
case 8: read_action_verb_message_nr(database); break;
case 9: read_conditions(database); break;
case 10: read_messages(database, sect); break;
case 11: read_hints(database); break;
case 12: break;
case 13: read_sound_text(database); break;
case 14: read_messages(database, sect); break;
default: BUG(9);
}
}
}
/* Finish constructing internal data format */
/* Having read in the database, certain things are now constructed.
* game.propS are set to zero. We finish setting up COND by checking for
* forced-motion travel entries. The PLAC and FIXD arrays are used
* to set up game.atloc(N) as the first object at location N, and
* game.link(OBJ) as the next object at the same location as OBJ.
* (OBJ>NOBJECTS indicates that game.fixed(OBJ-NOBJECTS)=LOC; game.link(OBJ) is
* still the correct link to use.) game.abbrev is zeroed; it controls
* whether the abbreviated description is printed. Counts modulo 5
* unless "LOOK" is used. */
static void write_0d(FILE* header_file, long single, char* varname)
{
fprintf(header_file, "LOCATION long %s INITIALIZE(= %ld);\n", varname, single);
}
static void write_1d(FILE* header_file, long array[], long dim, char* varname)
{
fprintf(header_file, "LOCATION long %s[] INITIALIZE(= {\n", varname);
for (int i = 0; i < dim; ++i)
{
if (i % 10 == 0)
{
if (i > 0)
fprintf(header_file, "\n");
fprintf(header_file, " ");
}
fprintf(header_file, "%ld, ", array[i]);
}
fprintf(header_file, "\n});\n");
}
static void write_hints(FILE* header_file, long matrix[][HINTLEN], long dim1, long dim2, char* varname)
{
fprintf(header_file, "LOCATION long %s[][%ld] INITIALIZE(= {\n", varname, dim2);
for (int i = 0; i < dim1; ++i)
{
fprintf(header_file, " {");
for (int j = 0; j < dim2; ++j)
{
fprintf(header_file, "%ld, ", matrix[i][j]);
}
fprintf(header_file, "},\n");
}
fprintf(header_file, "});\n");
}
static void write_file(FILE* header_file)
{
int MAXDIE;
for (int i=0; i<=4; i++) {
long x = 2*i+81;
if(RTEXT[x] != 0)
MAXDIE=i+1;
}
fprintf(header_file, "#ifndef DATABASE_H\n");
fprintf(header_file, "#define DATABASE_H\n");
fprintf(header_file, "\n");
fprintf(header_file, "#include \"common.h\"\n");
fprintf(header_file, "#define TABSIZ 330\n");
fprintf(header_file, "#define HNTSIZ 20\n");
fprintf(header_file, "#define TOKLEN %d\n", TOKLEN);
fprintf(header_file, "#define MAXDIE %d\n", MAXDIE);
fprintf(header_file, "\n");
fprintf(header_file, "\n");
fprintf(header_file, "#ifdef DEFINE_GLOBALS_FROM_INCLUDES\n");
fprintf(header_file, "#define LOCATION\n");
fprintf(header_file, "#define INITIALIZE(...) __VA_ARGS__\n");
fprintf(header_file, "#else\n");
fprintf(header_file, "#define LOCATION extern\n");
fprintf(header_file, "#define INITIALIZE(...)\n");
fprintf(header_file, "#endif\n");
fprintf(header_file, "\n");
// content variables
write_0d(header_file, TRNVLS, "TRNVLS");
write_0d(header_file, HNTMAX, "HNTMAX");
write_1d(header_file, OBJSND, NOBJECTS + 1, "OBJSND");
write_1d(header_file, OBJTXT, NOBJECTS + 1, "OBJTXT");
write_1d(header_file, COND, LOCSIZ + 1, "COND");
write_1d(header_file, KEY, LOCSIZ + 1, "KEY");
write_1d(header_file, LOCSND, LOCSIZ + 1, "LOCSND");
write_1d(header_file, CVAL, CLSMAX + 1, "CVAL");
write_1d(header_file, TRNVAL, TRNSIZ + 1, "TRNVAL");
write_1d(header_file, TRAVEL, TRVSIZ + 1, "TRAVEL");
write_1d(header_file, KTAB, TABSIZ + 1, "KTAB");
write_1d(header_file, ATAB, TABSIZ + 1, "ATAB");
write_1d(header_file, PLAC, NOBJECTS + 1, "PLAC");
write_1d(header_file, FIXD, NOBJECTS + 1, "FIXD");
write_1d(header_file, ACTSPK, VRBSIZ + 1, "ACTSPK");
write_hints(header_file, HINTS, HNTSIZ + 1, 5, "HINTS");
fprintf(header_file, "#undef LOCATION\n");
fprintf(header_file, "#undef INITIALIZE\n");
fprintf(header_file, "#endif\n");
}
int main(void)
{
FILE* database = fopen("adventure.text", "r");
read_database(database);
fclose(database);
FILE* header_file = fopen("database.h", "w");
write_file(header_file);
fclose(header_file);
return(EXIT_SUCCESS);
}
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