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annotate srogue/io.c @ 86:8757a0593e6e

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srogue: add arrow-key support. This is a first attempt which may not be completely portable.
author John "Elwin" Edwards
date Sat, 10 Aug 2013 17:43:58 -0700
parents 3aa87373c908
children 458df24e973d
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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 int md_readchar(WINDOW *win);
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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 msg(char *fmt, ...)
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33 {
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34 va_list ap;
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35 /*
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36 * if the string is "", just clear the line
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37 */
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38 if (*fmt == '\0') {
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39 wmove(cw, 0, 0);
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40 wclrtoeol(cw);
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41 mpos = 0;
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42 return;
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43 }
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44 /*
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45 * otherwise add to the message and flush it out
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46 */
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47 va_start(ap, fmt);
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48 doadd(fmt, ap);
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49 va_end(ap);
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50 endmsg();
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51 }
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52
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53 /*
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54 * addmsg:
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55 * Add things to the current message
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56 */
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57 addmsg(char *fmt, ...)
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58 {
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59 va_list ap;
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60
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61 va_start(ap, fmt);
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62 doadd(fmt, ap);
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63 va_end(ap);
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64 }
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65
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66 /*
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67 * endmsg:
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68 * Display a new msg, giving him a chance to see the
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69 * previous one if it is up there with the --More--
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70 */
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71 endmsg()
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72 {
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73 strcpy(huh, msgbuf);
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74 if (mpos > 0) {
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75 wmove(cw, 0, mpos);
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76 waddstr(cw, morestr);
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77 draw(cw);
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78 wait_for(cw, ' ');
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79 }
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80 mvwaddstr(cw, 0, 0, msgbuf);
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81 wclrtoeol(cw);
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82 mpos = newpos;
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83 newpos = 0;
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84 draw(cw);
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85 }
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86
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87 /*
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88 * doadd:
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89 * Perform a printf into a buffer
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90 */
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91 doadd(char *fmt, va_list ap)
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92 {
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93 vsprintf(&msgbuf[newpos], fmt, ap);
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94 newpos = strlen(msgbuf);
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95 }
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96
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97 /*
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98 * step_ok:
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99 * Returns TRUE if it is ok to step on ch
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100 */
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101 step_ok(ch)
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102 unsigned char ch;
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103 {
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104 if (dead_end(ch))
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105 return FALSE;
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106 else if (ch >= 32 && ch <= 127 && !isalpha(ch))
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107 return TRUE;
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108 return FALSE;