robots/move_robs.c

   1 /*      $NetBSD: move_robs.c,v 1.10 2009/07/20 06:39:06 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 1.10 2009/07/20 06:39:06 dholland Exp $");
  38 #endif
  39 #endif /* not lint */
  40
  41 #include <curses.h>
  42 #include <signal.h>
  43 #include <unistd.h>
  44 #include "robots.h"
  45
  46 /*
  47  * move_robots:
  48  *      Move the robots around
  49  */
  50 void
  51 move_robots(int was_sig)
  52 {
  53         COORD *rp;
  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                         Scrap[Num_scrap++] = *rp;
  93                         rp->y = -1;
  94                         Num_robots--;
  95                         if (Waiting)
  96                                 Wait_bonus++;
  97                         add_score(ROB_SCORE);
  98                 }
  99                 else {
 100                         mvaddch(rp->y, rp->x, ROBOT);
 101                         if (rp->y < Min.y)
 102                                 Min.y = rp->y;
 103                         if (rp->x < Min.x)
 104                                 Min.x = rp->x;
 105                         if (rp->y > Max.y)
 106                                 Max.y = rp->y;
 107                         if (rp->x > Max.x)
 108                                 Max.x = rp->x;
 109                 }
 110
 111         if (was_sig) {
 112                 refresh();
 113                 if (Dead || Num_robots <= 0)
 114                         longjmp(End_move, 0);
 115         }
 116
 117 #ifdef DEBUG
 118         standout();
 119         move(Min.y, Min.x);
 120         addch(inch());
 121         move(Max.y, Max.x);
 122         addch(inch());
 123         standend();
 124 #endif /* DEBUG */
 125         if (Real_time)
 126                 alarm(3);
 127 }
 128
 129 /*
 130  * add_score:
 131  *      Add a score to the overall point total
 132  */
 133 void
 134 add_score(int add)
 135 {
 136         Score += add;
 137         move(Y_SCORE, X_SCORE);
 138         printw("%d", Score);
 139 }
 140
 141 /*
 142  * sign:
 143  *      Return the sign of the number
 144  */
 145 int
 146 sign(int n)
 147 {
 148         if (n < 0)
 149                 return -1;
 150         else if (n > 0)
 151                 return 1;
 152         else
 153                 return 0;
 154 }