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[] = "@(#)move_robs.c 5.5 (Berkeley) 2/28/91";
  36 #endif /* not lint */
  37
  38 # include       "robots.h"
  39 # include       <signal.h>
  40
  41 /*
  42  * move_robots:
  43  *      Move the robots around
  44  */
  45 void
  46 move_robots(was_sig)
  47 bool    was_sig;
  48 {
  49         register COORD  *rp;
  50         register int    y, x;
  51         register int    mindist, d;
  52         static COORD    newpos;
  53
  54         if (Real_time)
  55                 signal(SIGALRM, move_robots);
  56 # ifdef DEBUG
  57         move(Min.y, Min.x);
  58         addch(inch());
  59         move(Max.y, Max.x);
  60         addch(inch());
  61 # endif DEBUG
  62         for (rp = Robots; rp < &Robots[MAXROBOTS]; rp++) {
  63                 if (rp->y < 0)
  64                         continue;
  65                 mvaddch(rp->y, rp->x, ' ');
  66                 Field[rp->y][rp->x]--;
  67                 rp->y += sign(My_pos.y - rp->y);
  68                 rp->x += sign(My_pos.x - rp->x);
  69                 if (rp->y <= 0)
  70                         rp->y = 0;
  71                 else if (rp->y >= Y_FIELDSIZE)
  72                         rp->y = Y_FIELDSIZE - 1;
  73                 if (rp->x <= 0)
  74                         rp->x = 0;
  75                 else if (rp->x >= X_FIELDSIZE)
  76                         rp->x = X_FIELDSIZE - 1;
  77                 Field[rp->y][rp->x]++;
  78         }
  79
  80         Min.y = Y_FIELDSIZE;
  81         Min.x = X_FIELDSIZE;
  82         Max.y = 0;
  83         Max.x = 0;
  84         for (rp = Robots; rp < &Robots[MAXROBOTS]; rp++)
  85                 if (rp->y < 0)
  86                         continue;
  87                 else if (rp->y == My_pos.y && rp->x == My_pos.x)
  88                         Dead = TRUE;
  89                 else if (Field[rp->y][rp->x] > 1) {
  90                         mvaddch(rp->y, rp->x, HEAP);
  91                         rp->y = -1;
  92                         Num_robots--;
  93                         if (Waiting)
  94                                 Wait_bonus++;
  95                         add_score(ROB_SCORE);
  96                 }
  97                 else {
  98                         mvaddch(rp->y, rp->x, ROBOT);
  99                         if (rp->y < Min.y)
 100                                 Min.y = rp->y;
 101                         if (rp->x < Min.x)
 102                                 Min.x = rp->x;
 103                         if (rp->y > Max.y)
 104                                 Max.y = rp->y;
 105                         if (rp->x > Max.x)
 106                                 Max.x = rp->x;
 107                 }
 108
 109         if (was_sig) {
 110                 refresh();
 111                 if (Dead || Num_robots <= 0)
 112                         longjmp(End_move, 0);
 113         }
 114
 115 # ifdef DEBUG
 116         standout();
 117         move(Min.y, Min.x);
 118         addch(inch());
 119         move(Max.y, Max.x);
 120         addch(inch());
 121         standend();
 122 # endif DEBUG
 123         if (Real_time)
 124                 alarm(3);
 125 }
 126
 127 /*
 128  * add_score:
 129  *      Add a score to the overall point total
 130  */
 131 add_score(add)
 132 int     add;
 133 {
 134         Score += add;
 135         move(Y_SCORE, X_SCORE);
 136         printw("%d", Score);
 137 }
 138
 139 /*
 140  * sign:
 141  *      Return the sign of the number
 142  */
 143 sign(n)
 144 int     n;
 145 {
 146         if (n < 0)
 147                 return -1;
 148         else if (n > 0)
 149                 return 1;
 150         else
 151                 return 0;
 152 }