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annotate arogue7/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 f9ef86cf22b2
children ad2570b5b21f
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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 * Advanced Rogue
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5 * Copyright (C) 1984, 1985, 1986 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 /*
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16 * Anything to do with trading posts
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17 */
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18
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19 #include <ctype.h>
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20 #include <string.h>
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21 #include "curses.h"
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22 #include "rogue.h"
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23
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24 bool open_market(void);
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25 void trans_line(void);
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26 char *typ_name(struct object *obj);
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27
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28
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29 /*
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30 * buy_it:
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31 * Buy the item on which the hero stands
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32 */
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33 void
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34 buy_it(void)
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35 {
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36 reg int wh;
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37 struct linked_list *item;
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38
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39 if (purse <= 0) {
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40 msg("You have no money.");
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41 return;
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42 }
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43 if (curprice < 0) { /* if not yet priced */
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44 wh = price_it();
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45 if (!wh) /* nothing to price */
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46 return;
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47 msg("Do you want to buy it? ");
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48 do {
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49 wh = tolower(readchar());
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50 if (wh == ESCAPE || wh == 'n') {
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51 msg("");
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52 return;
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53 }
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54 } until(wh == 'y');
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55 }
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56 mpos = 0;
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57 if (curprice > purse) {
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58 msg("You can't afford to buy that %s !",curpurch);
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59 return;
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60 }
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61 /*
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62 * See if the hero has done all his transacting
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63 */
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64 if (!open_market())
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65 return;
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66 /*
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67 * The hero bought the item here
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68 */
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69 item = find_obj(hero.y, hero.x);
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70 mpos = 0;
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71 if (add_pack(NULL, TRUE, &item)) { /* try to put it in his pack */
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72 purse -= curprice; /* take his money */
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73 ++trader; /* another transaction */
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74 trans_line(); /* show remaining deals */
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75 curprice = -1; /* reset stuff */
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76 curpurch[0] = 0;
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77 whatis (item); /* identify it after purchase */
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78 (OBJPTR(item))->o_flags &= ~ISPOST; /* turn off ISPOST */
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79 msg("%s", inv_name(OBJPTR(item), TRUE));
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80 }
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81 }
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82
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83 /*
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84 * do_post:
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85 * Put a trading post room and stuff on the screen
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86 * startup: True if equipping the player at the beginning of the game
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87 */
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88 void
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89 do_post(bool startup)
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