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annotate xrogue/bolt.c @ 215:1b73a8641b37

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rogue4: fix most GCC5 warnings. Converting all function definitions to ANSI style accounts for most of the change. This has exposed other problems, such as daemons not actually being their stated type, that will require more careful solutions.
author John "Elwin" Edwards
date Wed, 27 Jan 2016 19:41:05 -0500
parents e6179860cb76
children f54901b9c39b
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133
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1 /*
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2 bolt.c - functions shooting an object across the room
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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 Based on "Rogue: Exploring the Dungeons of Doom"
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13 Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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14 All rights reserved.
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15
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16 See the file LICENSE.TXT for full copyright and licensing information.
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17 */
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18
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19 #include <curses.h>
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20 #include <ctype.h>
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21 #include "rogue.h"
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22
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23 /*
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24 * shoot_bolt fires a bolt from the given starting point in the
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25 * given direction
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26 */
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27
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28 shoot_bolt(shooter, start, dir, get_points, reason, name, damage)
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29 struct thing *shooter;
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30 coord start, dir;
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31 bool get_points;
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32 short reason;
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33 char *name;
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34 int damage;
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35 {
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36 unsigned char dirch = 0, ch;
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37 bool used, change, see_him;
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38 short y, x, bounces;
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39 coord pos;
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40 struct linked_list *target=NULL;
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41 struct {
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42 coord place;
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43 char oldch;
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44 } spotpos[BOLT_LENGTH];
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45
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46 switch (dir.y + dir.x) {
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47 case 0: dirch = '/';
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48 when 1: case -1: dirch = (dir.y == 0 ? '-' : '|');
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49 when 2: case -2: dirch = '\\';
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50 }
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51 pos.y = start.y + dir.y;
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52 pos.x = start.x + dir.x;
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53 used = FALSE;
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54 change = FALSE;
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55
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56 bounces = 0; /* No bounces yet */
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57 nofont(cw);
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58 for (y = 0; y < BOLT_LENGTH && !used; y++) {
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59 ch = winat(pos.y, pos.x);
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60 spotpos[y].place = pos;
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61 spotpos[y].oldch = mvwinch(cw, pos.y, pos.x);
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62
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63 /* Are we at hero? */
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64 if (ce(pos, hero)) goto at_hero;
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65
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66 switch (ch) {
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67 case SECRETDOOR:
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68 case VERTWALL:
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69 case HORZWALL:
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70 case ' ':
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71 if (dirch == '-' || dirch == '|') {
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72 dir.y = -dir.y;
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73 dir.x = -dir.x;
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74 }
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75 else {
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76 unsigned char chx = mvinch(pos.y-dir.y, pos.x),
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77 chy = mvinch(pos.y, pos.x-dir.x);
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78 bool anychange = FALSE; /* Did we change anthing */
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79
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80 if (chy == WALL || chy == SECRETDOOR ||
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81 chy == HORZWALL || chy == VERTWALL) {
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82 dir.y = -dir.y;
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83 change ^= TRUE; /* Change at least one direction */
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84 anychange = TRUE;
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85 }
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86 if (chx == WALL || chx == SECRETDOOR ||
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87 chx == HORZWALL || chx == VERTWALL) {
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88 dir.x = -dir.x;
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89 change ^= TRUE; /* Change at least one direction */
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90 anychange = TRUE;
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91 }
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92
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93 /* If we didn't make any change, make both changes */