freebsd-dev/games/trek/schedule.c
Jordan K. Hubbard 554eb505f8 Bring in the 4.4 Lite games directory, modulo man page changes and segregation
of the x11 based games.  I'm not going to tag the originals with bsd_44_lite
and do this in two stages since it's just not worth it for this collection,
and I've got directory renames to deal with that way.  Bleah.
Submitted by:	jkh
1994-09-04 04:03:31 +00:00

174 lines
4.2 KiB
C

/*
* Copyright (c) 1980, 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[] = "@(#)schedule.c 8.1 (Berkeley) 5/31/93";
#endif /* not lint */
# include "trek.h"
/*
** SCHEDULE AN EVENT
**
** An event of type 'type' is scheduled for time NOW + 'offset'
** into the first available slot. 'x', 'y', and 'z' are
** considered the attributes for this event.
**
** The address of the slot is returned.
*/
struct event *schedule(type, offset, x, y, z)
int type;
double offset;
char x, y;
char z;
{
register struct event *e;
register int i;
double date;
date = Now.date + offset;
for (i = 0; i < MAXEVENTS; i++)
{
e = &Event[i];
if (e->evcode)
continue;
/* got a slot */
# ifdef xTRACE
if (Trace)
printf("schedule: type %d @ %.2f slot %d parm %d %d %d\n",
type, date, i, x, y, z);
# endif
e->evcode = type;
e->date = date;
e->x = x;
e->y = y;
e->systemname = z;
Now.eventptr[type] = e;
return (e);
}
syserr("Cannot schedule event %d parm %d %d %d", type, x, y, z);
}
/*
** RESCHEDULE AN EVENT
**
** The event pointed to by 'e' is rescheduled to the current
** time plus 'offset'.
*/
reschedule(e1, offset)
struct event *e1;
double offset;
{
double date;
register struct event *e;
e = e1;
date = Now.date + offset;
e->date = date;
# ifdef xTRACE
if (Trace)
printf("reschedule: type %d parm %d %d %d @ %.2f\n",
e->evcode, e->x, e->y, e->systemname, date);
# endif
return;
}
/*
** UNSCHEDULE AN EVENT
**
** The event at slot 'e' is deleted.
*/
unschedule(e1)
struct event *e1;
{
register struct event *e;
e = e1;
# ifdef xTRACE
if (Trace)
printf("unschedule: type %d @ %.2f parm %d %d %d\n",
e->evcode, e->date, e->x, e->y, e->systemname);
# endif
Now.eventptr[e->evcode & E_EVENT] = 0;
e->date = 1e50;
e->evcode = 0;
return;
}
/*
** Abreviated schedule routine
**
** Parameters are the event index and a factor for the time
** figure.
*/
struct event *xsched(ev1, factor, x, y, z)
int ev1;
int factor;
int x, y, z;
{
register int ev;
ev = ev1;
return (schedule(ev, -Param.eventdly[ev] * Param.time * log(franf()) / factor, x, y, z));
}
/*
** Simplified reschedule routine
**
** Parameters are the event index, the initial date, and the
** division factor. Look at the code to see what really happens.
*/
xresched(e1, ev1, factor)
struct event *e1;
int ev1;
int factor;
{
register int ev;
register struct event *e;
ev = ev1;
e = e1;
reschedule(e, -Param.eventdly[ev] * Param.time * log(franf()) / factor);
}