robots/move_robs.c

   1 /*      $NetBSD: move_robs.c,v 1.9 2009/07/20 06:00:56 dholland 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. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 #if 0
  35 static char sccsid[] = "@(#)move_robs.c 8.1 (Berkeley) 5/31/93";
  36 #else
  37 __RCSID("$NetBSD: move_robs.c,v 1.9 2009/07/20 06:00:56 dholland Exp $");
  38 #endif
  39 #endif /* not lint */
  40
  41 #include "robots.h"
  42
  43 /*
  44  * move_robots:
  45  *      Move the robots around
  46  */
  47 void
  48 move_robots(int was_sig)
  49 {
  50         COORD *rp;
  51
  52         if (Real_time)
  53                 signal(SIGALRM, move_robots);
  54 #ifdef DEBUG
  55         move(Min.y, Min.x);
  56         addch(inch());
  57         move(Max.y, Max.x);
  58         addch(inch());
  59 #endif /* DEBUG */
  60         for (rp = Robots; rp < &Robots[MAXROBOTS]; rp++) {
  61                 if (rp->y < 0)
  62                         continue;
  63                 mvaddch(rp->y, rp->x, ' ');
  64                 Field[rp->y][rp->x]--;
  65                 rp->y += sign(My_pos.y - rp->y);
  66                 rp->x += sign(My_pos.x - rp->x);
  67                 if (rp->y <= 0)
  68                         rp->y = 0;
  69                 else if (rp->y >= Y_FIELDSIZE)
  70                         rp->y = Y_FIELDSIZE - 1;
  71                 if (rp->x <= 0)
  72                         rp->x = 0;
  73                 else if (rp->x >= X_FIELDSIZE)
  74                         rp->x = X_FIELDSIZE - 1;
  75                 Field[rp->y][rp->x]++;
  76         }
  77
  78         Min.y = Y_FIELDSIZE;
  79         Min.x = X_FIELDSIZE;
  80         Max.y = 0;
  81         Max.x = 0;
  82         for (rp = Robots; rp < &Robots[MAXROBOTS]; rp++)
  83                 if (rp->y < 0)
  84                         continue;
  85                 else if (rp->y == My_pos.y && rp->x == My_pos.x)
  86                         Dead = TRUE;
  87                 else if (Field[rp->y][rp->x] > 1) {
  88                         mvaddch(rp->y, rp->x, HEAP);
  89                         Scrap[Num_scrap++] = *rp;
  90                         rp->y = -1;
  91                         Num_robots--;
  92                         if (Waiting)
  93                                 Wait_bonus++;
  94                         add_score(ROB_SCORE);
  95                 }
  96                 else {
  97                         mvaddch(rp->y, rp->x, ROBOT);
  98                         if (rp->y < Min.y)
  99                                 Min.y = rp->y;
 100                         if (rp->x < Min.x)
 101                                 Min.x = rp->x;
 102                         if (rp->y > Max.y)
 103                                 Max.y = rp->y;
 104                         if (rp->x > Max.x)
 105                                 Max.x = rp->x;
 106                 }
 107
 108         if (was_sig) {
 109                 refresh();
 110                 if (Dead || Num_robots <= 0)
 111                         longjmp(End_move, 0);
 112         }
 113
 114 #ifdef DEBUG
 115         standout();
 116         move(Min.y, Min.x);
 117         addch(inch());
 118         move(Max.y, Max.x);
 119         addch(inch());
 120         standend();
 121 #endif /* DEBUG */
 122         if (Real_time)
 123                 alarm(3);
 124 }
 125
 126 /*
 127  * add_score:
 128  *      Add a score to the overall point total
 129  */
 130 void
 131 add_score(int add)
 132 {
 133         Score += add;
 134         move(Y_SCORE, X_SCORE);
 135         printw("%d", Score);
 136 }
 137
 138 /*
 139  * sign:
 140  *      Return the sign of the number
 141  */
 142 int
 143 sign(int n)
 144 {
 145         if (n < 0)
 146                 return -1;
 147         else if (n > 0)
 148                 return 1;
 149         else
 150                 return 0;
 151 }