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annotate srogue/io.c @ 295:1e1c81fbb533

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Rogue V5: fix elemental wands. Bolts often failed to hit, due to some struct members not being initialized. Reported by 'LazyCat' from RogueTemple.
author John "Elwin" Edwards
date Fri, 12 Jan 2018 18:02:39 -0500
parents 70aa5808c782
children e52a8a7ad4c5
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1 /*
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2 * Various input/output functions
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3 *
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4 * @(#)io.c 9.0 (rdk) 7/17/84
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5 *
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6 * Super-Rogue
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7 * Copyright (C) 1984 Robert D. Kindelberger
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8 * All rights reserved.
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9 *
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10 * Based on "Rogue: Exploring the Dungeons of Doom"
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11 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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12 * All rights reserved.
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13 *
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14 * See the file LICENSE.TXT for full copyright and licensing information.
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15 */
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16
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17 #include <stdarg.h>
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18 #include <ctype.h>
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19 #include <string.h>
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20 #include "rogue.h"
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21 #include "rogue.ext"
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22
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23 void doadd(char *fmt, va_list ap);
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24
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25 /*
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26 * msg:
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27 * Display a message at the top of the screen.
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28 */
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29 static char msgbuf[BUFSIZ];
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30 static int newpos = 0;
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31
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32 void
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33 msg(char *fmt, ...)
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34 {
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35 va_list ap;
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36 /*
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37 * if the string is "", just clear the line
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38 */
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39 if (*fmt == '\0') {
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40 wmove(cw, 0, 0);
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41 wclrtoeol(cw);
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42 mpos = 0;
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43 return;
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44 }
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45 /*
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46 * otherwise add to the message and flush it out
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47 */
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48 va_start(ap, fmt);
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49 doadd(fmt, ap);
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50 va_end(ap);
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51 endmsg();
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52 }
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53
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54 /*
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55 * addmsg:
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56 * Add things to the current message
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57 */
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58 void
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59 addmsg(char *fmt, ...)
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60 {
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61 va_list ap;
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62
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63 va_start(ap, fmt);
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64 doadd(fmt, ap);
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65 va_end(ap);
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66 }
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67
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68 /*
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69 * endmsg:
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70 * Display a new msg, giving him a chance to see the
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71 * previous one if it is up there with the --More--
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72 */
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73 void
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74 endmsg(void)
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75 {
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76 strcpy(huh, msgbuf);
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77 if (mpos > 0) {
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78 wmove(cw, 0, mpos);
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79 waddstr(cw, morestr);
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80 draw(cw);
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81 wait_for(cw, ' ');
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82 }
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83 mvwaddstr(cw, 0, 0, msgbuf);
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84 wclrtoeol(cw);
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85 mpos = newpos;
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86 newpos = 0;
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87 draw(cw);
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88 }
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89
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90 /*
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91 * doadd:
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92 * Perform a printf into a buffer
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93 */
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94 void
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95 doadd(char *fmt, va_list ap)
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96 {
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97 vsprintf(&msgbuf[newpos], fmt, ap);
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98 newpos = strlen(msgbuf);
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99 }
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100
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101 /*
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102 * step_ok:
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103 * Returns TRUE if it is ok to step on ch
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104 */
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105 bool
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