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move_robs.c revision 1.4 
      1 /*	$NetBSD: move_robs.c,v 1.4 1997/10/12 14:10:00 lukem Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1980, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)move_robs.c	8.1 (Berkeley) 5/31/93";
     40 #else
     41 __RCSID("$NetBSD: move_robs.c,v 1.4 1997/10/12 14:10:00 lukem Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 # include	"robots.h"
     46 
     47 /*
     48  * move_robots:
     49  *	Move the robots around
     50  */
     51 void
     52 move_robots(was_sig)
     53 	int	was_sig;
     54 {
     55 	COORD		*rp;
     56 
     57 	if (Real_time)
     58 		signal(SIGALRM, move_robots);
     59 # ifdef DEBUG
     60 	move(Min.y, Min.x);
     61 	addch(inch());
     62 	move(Max.y, Max.x);
     63 	addch(inch());
     64 # endif DEBUG
     65 	for (rp = Robots; rp < &Robots[MAXROBOTS]; rp++) {
     66 		if (rp->y < 0)
     67 			continue;
     68 		mvaddch(rp->y, rp->x, ' ');
     69 		Field[rp->y][rp->x]--;
     70 		rp->y += sign(My_pos.y - rp->y);
     71 		rp->x += sign(My_pos.x - rp->x);
     72 		if (rp->y <= 0)
     73 			rp->y = 0;
     74 		else if (rp->y >= Y_FIELDSIZE)
     75 			rp->y = Y_FIELDSIZE - 1;
     76 		if (rp->x <= 0)
     77 			rp->x = 0;
     78 		else if (rp->x >= X_FIELDSIZE)
     79 			rp->x = X_FIELDSIZE - 1;
     80 		Field[rp->y][rp->x]++;
     81 	}
     82 
     83 	Min.y = Y_FIELDSIZE;
     84 	Min.x = X_FIELDSIZE;
     85 	Max.y = 0;
     86 	Max.x = 0;
     87 	for (rp = Robots; rp < &Robots[MAXROBOTS]; rp++)
     88 		if (rp->y < 0)
     89 			continue;
     90 		else if (rp->y == My_pos.y && rp->x == My_pos.x)
     91 			Dead = TRUE;
     92 		else if (Field[rp->y][rp->x] > 1) {
     93 			mvaddch(rp->y, rp->x, HEAP);
     94 			rp->y = -1;
     95 			Num_robots--;
     96 			if (Waiting)
     97 				Wait_bonus++;
     98 			add_score(ROB_SCORE);
     99 		}
    100 		else {
    101 			mvaddch(rp->y, rp->x, ROBOT);
    102 			if (rp->y < Min.y)
    103 				Min.y = rp->y;
    104 			if (rp->x < Min.x)
    105 				Min.x = rp->x;
    106 			if (rp->y > Max.y)
    107 				Max.y = rp->y;
    108 			if (rp->x > Max.x)
    109 				Max.x = rp->x;
    110 		}
    111 
    112 	if (was_sig) {
    113 		refresh();
    114 		if (Dead || Num_robots <= 0)
    115 			longjmp(End_move, 0);
    116 	}
    117 
    118 # ifdef DEBUG
    119 	standout();
    120 	move(Min.y, Min.x);
    121 	addch(inch());
    122 	move(Max.y, Max.x);
    123 	addch(inch());
    124 	standend();
    125 # endif DEBUG
    126 	if (Real_time)
    127 		alarm(3);
    128 }
    129 
    130 /*
    131  * add_score:
    132  *	Add a score to the overall point total
    133  */
    134 void
    135 add_score(add)
    136 	int	add;
    137 {
    138 	Score += add;
    139 	move(Y_SCORE, X_SCORE);
    140 	printw("%d", Score);
    141 }
    142 
    143 /*
    144  * sign:
    145  *	Return the sign of the number
    146  */
    147 int
    148 sign(n)
    149 	int	n;
    150 {
    151 	if (n < 0)
    152 		return -1;
    153 	else if (n > 0)
    154 		return 1;
    155 	else
    156 		return 0;
    157 }
    158