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annotate arogue5/save.c @ 227:696277507a2e

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Rogue V4, V5: disable a cheat granting permanent monster detection. In these two games, a potion of monster detection turns on the player's SEEMONST flag. A fuse is set to call turn_see() to turn the flag back off. But the save and restore functions do not recognize turn_see() and fail to set the fuse up again. When restoring, Rogue V4 merely sets the fuse's function to NULL and leaves it burning. When it goes off, a segfault results. Rogue V5 clears all the fuse's fields, and the player retains the ability to see all monsters on the level. The save and restore code can now handle the fuse. The function used is a new wrapper, turn_see_off(), which should lead to less problems with daemons being multiple incompatible types. Also, Rogue V4 and Super-Rogue now properly clear unrecognized daemon and fuse slots when restoring a saved game.
author John "Elwin" Edwards
date Sat, 05 Mar 2016 12:10:20 -0500
parents 56e748983fa8
children 3d4252fa2ed3
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1 /*
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2 * save and restore routines
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3 *
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4 * Advanced Rogue
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5 * Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
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6 * All rights reserved.
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7 *
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8 * Based on "Rogue: Exploring the Dungeons of Doom"
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9 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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10 * All rights reserved.
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11 *
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12 * See the file LICENSE.TXT for full copyright and licensing information.
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13 */
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14
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15 #include "curses.h"
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16 #include <stdlib.h>
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17 #include <string.h>
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18 #include <fcntl.h>
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19 #include <errno.h>
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20 #include <ctype.h>
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21 #include <sys/types.h>
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22 #include <sys/stat.h>
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23 #include <signal.h>
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24 #include "rogue.h"
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25
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26 bool save_file(FILE *savef);
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27
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28 typedef struct stat STAT;
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29
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30 extern char version[], encstr[];
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31 /* extern bool _endwin; */
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32
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33 STAT sbuf;
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34
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35 bool
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36 save_game(void)
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37 {
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38 register FILE *savef;
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39 register int c;
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40 char buf[LINELEN];
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41
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42 /*
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43 * get file name
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44 */
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45 mpos = 0;
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46 if (file_name[0] != '\0')
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47 {
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48 if (use_savedir)
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49 msg("Save game? ");
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50 else
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51 msg("Save file (%s)? ", file_name);
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52 do
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53 {
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54 c = readchar();
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55 if (c == ESCAPE) return(0);
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56 } while (c != 'n' && c != 'N' && c != 'y' && c != 'Y');
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57 mpos = 0;
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58 if (c == 'y' || c == 'Y')
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59 {
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60 msg("File name: %s", file_name);
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61 goto gotfile;
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62 }
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63 if (use_savedir) {
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64 msg("");
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65 return FALSE;
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66 }
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67 }
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68
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69 do
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70 {
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71 msg("File name: ");
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72 mpos = 0;
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73 buf[0] = '\0';
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74 if (get_str(buf, msgw) == QUIT)
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75 {
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76 msg("");
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77 return FALSE;
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78 }
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79 msg("");
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80 strcpy(file_name, buf);
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81 gotfile:
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82 if ((savef = fopen(file_name, "w")) == NULL)
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83 {
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84 msg(strerror(errno)); /* fake perror() */
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85 if (use_savedir)
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86 return FALSE;
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87 }
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88 } while (savef == NULL);
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89
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90 /*
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91 * write out encrpyted file (after a stat)
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92 * The fwrite is to force allocation of the buffer before the write
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93 */
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94 if (save_file(savef) != 0) {
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95 msg("Cannot create save file.");
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96 md_unlink(file_name);
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97 return(FALSE);
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98 }
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99 else return(TRUE);
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100 }
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