robots/move_robs.c

   1 /*
   2  * Copyright (c) 1980 Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifndef lint
  35 /*static char sccsid[] = "from: @(#)move_robs.c 5.5 (Berkeley) 2/28/91";*/
  36 static char rcsid[] = "$Id: move_robs.c,v 1.2 1993/08/01 18:52:43 mycroft Exp $";
  37 #endif /* not lint */
  38
  39 # include       "robots.h"
  40 # include       <signal.h>
  41
  42 /*
  43  * move_robots:
  44  *      Move the robots around
  45  */
  46 void
  47 move_robots(was_sig)
  48 bool    was_sig;
  49 {
  50         register COORD  *rp;
  51         register int    y, x;
  52         register int    mindist, d;
  53         static COORD    newpos;
  54
  55         if (Real_time)
  56                 signal(SIGALRM, move_robots);
  57 # ifdef DEBUG
  58         move(Min.y, Min.x);
  59         addch(inch());
  60         move(Max.y, Max.x);
  61         addch(inch());
  62 # endif DEBUG
  63         for (rp = Robots; rp < &Robots[MAXROBOTS]; rp++) {
  64                 if (rp->y < 0)
  65                         continue;
  66                 mvaddch(rp->y, rp->x, ' ');
  67                 Field[rp->y][rp->x]--;
  68                 rp->y += sign(My_pos.y - rp->y);
  69                 rp->x += sign(My_pos.x - rp->x);
  70                 if (rp->y <= 0)
  71                         rp->y = 0;
  72                 else if (rp->y >= Y_FIELDSIZE)
  73                         rp->y = Y_FIELDSIZE - 1;
  74                 if (rp->x <= 0)
  75                         rp->x = 0;
  76                 else if (rp->x >= X_FIELDSIZE)
  77                         rp->x = X_FIELDSIZE - 1;
  78                 Field[rp->y][rp->x]++;
  79         }
  80
  81         Min.y = Y_FIELDSIZE;
  82         Min.x = X_FIELDSIZE;
  83         Max.y = 0;
  84         Max.x = 0;
  85         for (rp = Robots; rp < &Robots[MAXROBOTS]; rp++)
  86                 if (rp->y < 0)
  87                         continue;
  88                 else if (rp->y == My_pos.y && rp->x == My_pos.x)
  89                         Dead = TRUE;
  90                 else if (Field[rp->y][rp->x] > 1) {
  91                         mvaddch(rp->y, rp->x, HEAP);
  92                         rp->y = -1;
  93                         Num_robots--;
  94                         if (Waiting)
  95                                 Wait_bonus++;
  96                         add_score(ROB_SCORE);
  97                 }
  98                 else {
  99                         mvaddch(rp->y, rp->x, ROBOT);
 100                         if (rp->y < Min.y)
 101                                 Min.y = rp->y;
 102                         if (rp->x < Min.x)
 103                                 Min.x = rp->x;
 104                         if (rp->y > Max.y)
 105                                 Max.y = rp->y;
 106                         if (rp->x > Max.x)
 107                                 Max.x = rp->x;
 108                 }
 109
 110         if (was_sig) {
 111                 refresh();
 112                 if (Dead || Num_robots <= 0)
 113                         longjmp(End_move, 0);
 114         }
 115
 116 # ifdef DEBUG
 117         standout();
 118         move(Min.y, Min.x);
 119         addch(inch());
 120         move(Max.y, Max.x);
 121         addch(inch());
 122         standend();
 123 # endif DEBUG
 124         if (Real_time)
 125                 alarm(3);
 126 }
 127
 128 /*
 129  * add_score:
 130  *      Add a score to the overall point total
 131  */
 132 add_score(add)
 133 int     add;
 134 {
 135         Score += add;
 136         move(Y_SCORE, X_SCORE);
 137         printw("%d", Score);
 138 }
 139
 140 /*
 141  * sign:
 142  *      Return the sign of the number
 143  */
 144 sign(n)
 145 int     n;
 146 {
 147         if (n < 0)
 148                 return -1;
 149         else if (n > 0)
 150                 return 1;
 151         else
 152                 return 0;
 153 }