04eca720d9
Show usage when using bad parameter with ./advent Converted magic numbers to enums for BUG(). Also bug now shows stringify'ed version of bug enumeration (not just a number).
126 lines
3.2 KiB
C
126 lines
3.2 KiB
C
#include <stdlib.h>
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#include <string.h>
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#include "advent.h"
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#include "database.h"
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#include "newdb.h"
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#include "linenoise/linenoise.h"
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/*
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* (ESR) This replaces a bunch of particularly nasty FORTRAN-derived code;
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* see the history.adoc file in the source distribution for discussion.
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*/
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#define VRSION 26 /* bump on save format change */
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/*
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* If you change the first three members, the resume function may not properly
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* reject saves from older versions. Yes, this glues us to a hardware-
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* dependent length of long. Later members can change, but bump the version
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* when you do that.
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*/
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struct save_t {
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long savetime;
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long mode; /* not used, must be present for version detection */
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long version;
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struct game_t game;
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long bird;
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long bivalve;
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};
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struct save_t save;
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/* Suspend and resume */
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int suspend(void)
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{
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/* Suspend. Offer to save things in a file, but charging
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* some points (so can't win by using saved games to retry
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* battles or to start over after learning zzword).
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* If ADVENT_NOSAVE is defined, do nothing instead. */
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#ifdef ADVENT_NOSAVE
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return GO_UNKNOWN;
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#endif
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long i, k;
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FILE *fp = NULL;
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RSPEAK(SUSPEND_WARNING);
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if (!YES(THIS_ACCEPTABLE, OK_MAN, OK_MAN)) return GO_CLEAROBJ;
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game.saved = game.saved + 5;
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while (fp == NULL) {
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char* name = linenoise("\nFile name: ");
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if (name == NULL)
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return GO_TOP;
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fp = fopen(name, WRITE_MODE);
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if (fp == NULL)
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printf("Can't open file %s, try again.\n", name);
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linenoiseFree(name);
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}
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DATIME(&i, &k);
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k = i + 650 * k;
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save.savetime = k;
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save.mode = -1;
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save.version = VRSION;
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memcpy(&save.game, &game, sizeof(struct game_t));
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save.bird = OBJSND[BIRD];
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save.bivalve = OBJTXT[OYSTER];
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IGNORE(fwrite(&save, sizeof(struct save_t), 1, fp));
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fclose(fp);
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RSPEAK(RESUME_HELP);
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exit(0);
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}
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int resume(void)
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{
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/* Resume. Read a suspended game back from a file.
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* If ADVENT_NOSAVE is defined, do nothing instead. */
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#ifdef ADVENT_NOSAVE
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return GO_UNKNOWN;
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#endif
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FILE *fp = NULL;
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if (game.loc != 1 || game.abbrev[1] != 1) {
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RSPEAK(RESUME_ABANDON);
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if (!YES(THIS_ACCEPTABLE, OK_MAN, OK_MAN)) return GO_CLEAROBJ;
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}
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while (fp == NULL) {
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char* name = linenoise("\nFile name: ");
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if (name == NULL)
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return GO_TOP;
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fp = fopen(name, READ_MODE);
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if (fp == NULL)
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printf("Can't open file %s, try again.\n", name);
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linenoiseFree(name);
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}
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return restore(fp);
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}
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int restore(FILE* fp)
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{
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/* Read and restore game state from file, assuming
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* sane initial state.
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* If ADVENT_NOSAVE is defined, do nothing instead. */
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#ifdef ADVENT_NOSAVE
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return GO_UNKNOWN;
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#endif
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IGNORE(fread(&save, sizeof(struct save_t), 1, fp));
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fclose(fp);
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if (save.version != VRSION) {
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SETPRM(1, save.version / 10, MOD(save.version, 10));
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SETPRM(3, VRSION / 10, MOD(VRSION, 10));
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RSPEAK(VERSION_SKEW);
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} else {
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memcpy(&game, &save.game, sizeof(struct game_t));
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OBJSND[BIRD] = save.bird;
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OBJTXT[OYSTER] = save.bivalve;
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game.zzword = RNDVOC(3, game.zzword);
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}
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return GO_TOP;
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}
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/* end */
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