Early Roguelike Collection: xrogue/chase.c annotate

annotate xrogue/chase.c @ 281:4a3f4729257c

Merge the urogue and bugfix branches.

author	John "Elwin" Edwards
date	Fri, 15 Sep 2017 21:16:28 -0400
parents	f54901b9c39b
children	e52a8a7ad4c5

rev	line source
133 e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	1 /*
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	2 chase.c - Code for one object to chase another
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	3
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	4 XRogue: Expeditions into the Dungeons of Doom
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	5 Copyright (C) 1991 Robert Pietkivitch
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	6 All rights reserved.
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	7
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	8 Based on "Advanced Rogue"
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	9 Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	10 All rights reserved.
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	11
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	12 Based on "Rogue: Exploring the Dungeons of Doom"
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	13 Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	14 All rights reserved.
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	15
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	16 See the file LICENSE.TXT for full copyright and licensing information.
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	17 */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	18
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	19 #include <ctype.h>
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	20 #include <curses.h>
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	21 #include <limits.h>
220 f54901b9c39b XRogue: convert to ANSI-style function declarations. John "Elwin" Edwards parents: 133 diff changeset	22 #include <stdlib.h>
133 e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	23 #include "rogue.h"
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	24
220 f54901b9c39b XRogue: convert to ANSI-style function declarations. John "Elwin" Edwards parents: 133 diff changeset	25 bool straight_shot(int ery, int erx, int eey, int eex, coord *shooting);
f54901b9c39b XRogue: convert to ANSI-style function declarations. John "Elwin" Edwards parents: 133 diff changeset	26
133 e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	27 /*
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	28 * Canblink checks if the monster can teleport (blink). If so, it will
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	29 * try to blink the monster next to the player.
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	30 */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	31
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	32 bool
220 f54901b9c39b XRogue: convert to ANSI-style function declarations. John "Elwin" Edwards parents: 133 diff changeset	33 can_blink(struct thing *tp)
133 e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	34 {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	35 register int y, x, index=9;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	36 coord tryp; /* To hold the coordinates for use in diag_ok */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	37 bool spots[9], found_one=FALSE;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	38
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	39 /*
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	40 * First, can the monster even blink? And if so, there is only a 50%
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	41 * chance that it will do so. And it won't blink if it is running or
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	42 * held.
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	43 */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	44 if (off(tp, CANBLINK) \|\| (on(tp, ISHELD)) \|\|
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	45 on(*tp, ISFLEE) \|\|
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	46 tp->t_action == A_FREEZE \|\|
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	47 (rnd(12) < 6)) return(FALSE);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	48
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	49
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	50 /* Initialize the spots as illegal */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	51 do {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	52 spots[--index] = FALSE;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	53 } while (index > 0);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	54
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	55 /* Find a suitable spot next to the player */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	56 for (y=hero.y-1; y<hero.y+2; y++)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	57 for (x=hero.x-1; x<hero.x+2; x++, index++) {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	58 /* Make sure x coordinate is in range and that we are
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	59 * not at the player's position
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	60 */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	61 if (x<0 \|\| x >= cols \|\| index == 4) continue;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	62
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	63 /* Is it OK to move there? */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	64 if (step_ok(y, x, NOMONST, tp) &&
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	65 (!isatrap(mvwinch(cw, y, x)) \|\|
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	66 rnd(10) >= tp->t_stats.s_intel \|\|
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	67 on(*tp, ISFLY))) {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	68 /* OK, we can go here. But don't go there if
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	69 * monster can't get at player from there
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	70 */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	71 tryp.y = y;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	72 tryp.x = x;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	73 if (diag_ok(&tryp, &hero, tp)) {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	74 spots[index] = TRUE;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	75 found_one = TRUE;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	76 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	77 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	78 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	79
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	80 /* If we found one, go to it */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	81 if (found_one) {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	82 unsigned char rch; /* What's really where the creatures moves to */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	83
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	84 /* Find a legal spot */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	85 while (spots[index=rnd(9)] == FALSE) continue;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	86
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	87 /* Get the coordinates */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	88 y = hero.y + (index/3) - 1;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	89 x = hero.x + (index % 3) - 1;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	90
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	91 /* Move the monster from the old space */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490) John "Elwin" Edwards parents: diff changeset	92 mvwaddch(cw, tp->t_pos.y, tp->t_pos.x, tp->t_oldch);

Mercurial > hg > early-roguelike

annotate xrogue/chase.c @ 281:4a3f4729257c