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annotate xrogue/trader.c @ 233:0990adf580ee

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Declare some function arguments as const. Some functions, mostly in fight.c, declared variables as pointers to const char but passed them to functions that took pointers to ordinary char. The strings did not actually get modified, so adding 'const' to the function definitions removed the warnings.
author John "Elwin" Edwards
date Sun, 06 Mar 2016 19:32:47 -0500
parents f54901b9c39b
children
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1 /*
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2 trader.c - Anything to do with trading posts
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3
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4 XRogue: Expeditions into the Dungeons of Doom
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5 Copyright (C) 1991 Robert Pietkivitch
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6 All rights reserved.
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7
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8 Based on "Advanced Rogue"
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9 Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
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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 <string.h>
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17 #include "rogue.h"
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18
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19 bool open_market(void);
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20 void trans_line(void);
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21 char *typ_name(struct object *obj);
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22
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23 /*
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24 * buy_it:
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25 * Buy the item on which the hero stands
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26 */
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27
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28 void
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29 buy_it(void)
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30 {
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31 reg int wh;
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32 struct linked_list *item = NULL;
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33 struct object *obj = NULL;
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34 int wasfood = FALSE;
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35
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36 if (purse <= 0) {
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37 msg("You have no money.");
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38 return;
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39 }
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40 if (curprice < 0) { /* if not yet priced */
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41 wh = price_it();
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42 if (!wh) /* nothing to price */
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43 return;
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44 msg("Do you want to buy it? ");
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45 do {
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46 wh = wgetch(cw);
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47 if (wh == ESC || wh == 'n') {
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48 msg("");
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49 return;
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50 }
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51 } until(wh == 'y');
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52 }
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53 mpos = 0;
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54 if (curprice > purse) {
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55 msg("You can't afford it!");
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56 return;
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57 }
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58 /*
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59 * See if the hero has done all his transacting
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60 */
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61 if (!open_market())
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62 return;
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63 /*
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64 * The hero bought the item here
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65 */
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66 item = find_obj(hero.y, hero.x);
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67 obj = OBJPTR(item);
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68 mpos = 0;
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69 wasfood = ISMULT(obj->o_type);
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70 if (add_pack((struct linked_list *)NULL,TRUE)) {/* try to put it in his pack */
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71 purse -= curprice; /* take his money */
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72 ++trader; /* another transaction */
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73 trans_line(); /* show remaining deals */
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74 curprice = -1; /* reset stuff */
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75 curpurch[0] = 0;
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76 if (!wasfood) /* if it was food then the object has been deleted */
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77 {
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78 whatis (item); /* identify it */
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79 obj = OBJPTR(item);
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80 obj->o_flags &= ~ISPOST; /* turn off ISPOST */
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81 obj->o_flags |= ISKNOW; /* he knows the item */
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82 msg("%s", inv_name(obj, TRUE));
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83 }
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84 else
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85 msg("a food ration.");
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86 }
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87 }
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88
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89 /*
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90 * do_post:
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91 * Put a trading post room and stuff on the screen
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