freebsd-skq/games/battlestar/room.c

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/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)room.c 8.1 (Berkeley) 5/31/93";
#endif /* not lint */
#include "externs.h"
writedes()
{
int compass;
register char *p;
register c;
printf("\n\t%s\n", location[position].name);
if (beenthere[position] < 3) {
compass = NORTH;
for (p = location[position].desc; c = *p++;)
if (c != '-' && c != '*' && c != '+')
putchar(c);
else {
if (c != '*')
printf(truedirec(compass, c));
compass++;
}
}
}
printobjs()
{
register unsigned int *p = location[position].objects;
register n;
printf("\n");
for (n = 0; n < NUMOFOBJECTS; n++)
if (testbit(p, n) && objdes[n])
puts(objdes[n]);
}
whichway(here)
struct room here;
{
switch(direction) {
case NORTH:
left = here.west;
right = here.east;
ahead = here.north;
back = here.south;
break;
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case SOUTH:
left = here.east;
right = here.west;
ahead = here.south;
back = here.north;
break;
case EAST:
left = here.north;
right = here.south;
ahead = here.east;
back = here.west;
break;
case WEST:
left = here.south;
right = here.north;
ahead = here.west;
back = here.east;
break;
}
}
char *
truedirec(way, option)
int way;
char option;
{
switch(way) {
case NORTH:
switch(direction) {
case NORTH:
return("ahead");
case SOUTH:
return(option == '+' ? "behind you" : "back");
case EAST:
return("left");
case WEST:
return("right");
}
case SOUTH:
switch(direction) {
case NORTH:
return(option == '+' ? "behind you" : "back");
case SOUTH:
return("ahead");
case EAST:
return("right");
case WEST:
return("left");
}
case EAST:
switch(direction) {
case NORTH:
return("right");
case SOUTH:
return("left");
case EAST:
return("ahead");
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case WEST:
return(option == '+' ? "behind you" : "back");
}
case WEST:
switch(direction) {
case NORTH:
return("left");
case SOUTH:
return("right");
case EAST:
return(option == '+' ? "behind you" : "back");
case WEST:
return("ahead");
}
default:
printf("Error: room %d. More than four directions wanted.", position);
return("!!");
}
}
newway(thisway)
int thisway;
{
switch(direction){
case NORTH:
switch(thisway){
case LEFT:
direction = WEST;
break;
case RIGHT:
direction = EAST;
break;
case BACK:
direction = SOUTH;
break;
}
break;
case SOUTH:
switch(thisway){
case LEFT:
direction = EAST;
break;
case RIGHT:
direction = WEST;
break;
case BACK:
direction = NORTH;
break;
}
break;
case EAST:
switch(thisway){
case LEFT:
direction = NORTH;
break;
case RIGHT:
direction = SOUTH;
break;
case BACK:
direction = WEST;
break;
}
break;
case WEST:
switch(thisway){
case LEFT:
direction = SOUTH;
break;
case RIGHT:
direction = NORTH;
break;
case BACK:
direction = EAST;
break;
}
break;
}
}