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annotate xrogue/trader.c @ 306:057c5114e244

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Super-Rogue: fix some out-of-range constants. Constants K_ARROW etc., for causes of death other than monsters, are in the 240-255 range. They were often passed to functions taking char, which is usually signed, making the values out of range. The function declarations have been changed to unsigned char, which is also the type used by the scoreboard code.
author John "Elwin" Edwards
date Sat, 17 Apr 2021 15:41:12 -0400
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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