robots/move_robs.c

   1 /*      $NetBSD: move_robs.c,v 1.5 1999/05/15 23:56:36 christos 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 1.5 1999/05/15 23:56:36 christos 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                         Scrap[Num_scrap++] = *rp;
  95                         rp->y = -1;
  96                         Num_robots--;
  97                         if (Waiting)
  98                                 Wait_bonus++;
  99                         add_score(ROB_SCORE);
 100                 }
 101                 else {
 102                         mvaddch(rp->y, rp->x, ROBOT);
 103                         if (rp->y < Min.y)
 104                                 Min.y = rp->y;
 105                         if (rp->x < Min.x)
 106                                 Min.x = rp->x;
 107                         if (rp->y > Max.y)
 108                                 Max.y = rp->y;
 109                         if (rp->x > Max.x)
 110                                 Max.x = rp->x;
 111                 }
 112
 113         if (was_sig) {
 114                 refresh();
 115                 if (Dead || Num_robots <= 0)
 116                         longjmp(End_move, 0);
 117         }
 118
 119 # ifdef DEBUG
 120         standout();
 121         move(Min.y, Min.x);
 122         addch(inch());
 123         move(Max.y, Max.x);
 124         addch(inch());
 125         standend();
 126 # endif /* DEBUG */
 127         if (Real_time)
 128                 alarm(3);
 129 }
 130
 131 /*
 132  * add_score:
 133  *      Add a score to the overall point total
 134  */
 135 void
 136 add_score(add)
 137         int     add;
 138 {
 139         Score += add;
 140         move(Y_SCORE, X_SCORE);
 141         printw("%d", Score);
 142 }
 143
 144 /*
 145  * sign:
 146  *      Return the sign of the number
 147  */
 148 int
 149 sign(n)
 150         int     n;
 151 {
 152         if (n < 0)
 153                 return -1;
 154         else if (n > 0)
 155                 return 1;
 156         else
 157                 return 0;
 158 }