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annotate rogue5/chase.c @ 168:82b2a046d151

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arogue7: fix inventory display bug again. Removing the call to msg() in restore() resulted in msgw remaining as it was when the game was saved. This results in another display glitch like that fixed by r163. Adding an empty message puts msgw into a reliable state.
author John "Elwin" Edwards
date Tue, 30 Jun 2015 12:00:02 -0400
parents f502bf60e6e4
children
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33
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1 /*
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2 * Code for one creature to chase another
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3 *
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4 * @(#)chase.c 4.57 (Berkeley) 02/05/99
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5 *
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6 * Rogue: Exploring the Dungeons of Doom
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7 * Copyright (C) 1980-1983, 1985, 1999 Michael Toy, Ken Arnold and Glenn Wichman
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8 * All rights reserved.
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9 *
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10 * See the file LICENSE.TXT for full copyright and licensing information.
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11 */
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12
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13 #include <stdlib.h>
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14 #include <curses.h>
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15 #include "rogue.h"
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16
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17 #define DRAGONSHOT 5 /* one chance in DRAGONSHOT that a dragon will flame */
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18
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19 static coord ch_ret; /* Where chasing takes you */
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20
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21 /*
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22 * runners:
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23 * Make all the running monsters move.
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24 */
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25 void
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26 runners(void)
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27 {
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28 THING *tp;
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29 THING *next;
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30 int wastarget;
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31 coord orig_pos;
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32
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33 for (tp = mlist; tp != NULL; tp = next)
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34 {
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35 /* remember this in case the monster's "next" is changed */
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36 next = next(tp);
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37 if (!on(*tp, ISHELD) && on(*tp, ISRUN))
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38 {
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39 orig_pos = tp->t_pos;
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40 wastarget = on(*tp, ISTARGET);
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41 if (move_monst(tp) == -1)
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42 continue;
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43 if (on(*tp, ISFLY) && dist_cp(&hero, &tp->t_pos) >= 3)
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44 move_monst(tp);
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45 if (wastarget && !ce(orig_pos, tp->t_pos))
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46 {
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47 tp->t_flags &= ~ISTARGET;
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48 to_death = FALSE;
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49 }
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50 }
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51 }
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52 if (has_hit)
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53 {
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54 endmsg();
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55 has_hit = FALSE;
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56 }
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57 }
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58
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59 /*
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60 * move_monst:
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61 * Execute a single turn of running for a monster
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62 */
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63 int
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64 move_monst(THING *tp)
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65 {
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66 if (!on(*tp, ISSLOW) || tp->t_turn)
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67 if (do_chase(tp) == -1)
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68 return(-1);
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69 if (on(*tp, ISHASTE))
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70 if (do_chase(tp) == -1)
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71 return(-1);
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72 tp->t_turn ^= TRUE;
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73 return(0);
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74 }
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75
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76 /*
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77 * relocate:
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78 * Make the monster's new location be the specified one, updating
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79 * all the relevant state.
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80 */
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81 void
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82 relocate(THING *th, const coord *new_loc)
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83 {
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84 struct room *oroom;
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85
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86 if (!ce(*new_loc, th->t_pos))
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87 {
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88 mvaddch(th->t_pos.y, th->t_pos.x, th->t_oldch);
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89 th->t_room = roomin(new_loc);
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90 set_oldch(th, new_loc);
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91 oroom = th->t_room;
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92 moat(th->t_pos.y, th->t_pos.x) = NULL;
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93
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94 if (oroom != th->t_room)
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95 th->t_dest = find_dest(th);
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96 th->t_pos = *new_loc;
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97 moat(new_loc->y, new_loc->x) = th;
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98 }
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99 move(new_loc->y, new_loc->x);
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100 if (see_monst(th))
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101 addch(th->t_disguise);
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102 else if (on(player, SEEMONST))
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103 {
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104 standout();
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105 addch(th->t_type);
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106 standend();
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107 }
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108 }