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From: okamoto@ucbvax.ARPA (Doctor Who)
Newsgroups: net.sources.games
Subject: Trek73 (part 5 of 4)
Message-ID: <10411@ucbvax.ARPA>
Date: Tue, 17-Sep-85 10:41:47 EDT
Article-I.D.: ucbvax.10411
Posted: Tue Sep 17 10:41:47 1985
Date-Received: Thu, 19-Sep-85 04:30:45 EDT
Organization: University of California at Berkeley
Lines: 478

Here is the Makefile for trek73 and the missing file.  Sorry for
any problems.

Jeff Okamoto

#	This is a shell archive.
#	Remove everything above and including the cut line.
#	Then run the rest of the file through sh.
-----cut here-----cut here-----cut here-----cut here-----
#!/bin/sh
# shar:	Shell Archiver
#	Run the following text with /bin/sh to create:
#	Makefile
#	subs.c
# This archive created: Tue Sep 17 07:39:18 1985
echo shar: extracting Makefile '(709 characters)'
sed 's/^XX//' << \SHAR_EOF > Makefile
XX#
XX# makefile for trek73
XX#
XX
XXCFLAGS=-O
XXOBJECTS= cmds1.o cmds2.o cmds3.o cmds4.o dist.o endgame.o enemycom.o\
XX	firing.o globals.o main.o misc.o mission.o moveships.o\
XX	parseopts.o strat1.o subs.o
XXCFILES= cmds1.c cmds2.c cmds3.c cmds4.c dist.c endgame.c enemycom.c\
XX	firing.c globals.c main.c misc.c mission.c moveships.c\
XX	parseopts.c strat1.c subs.c
XXHEADS= structs.h defines.h
XXLIBS= -lm
XX
XXall:	trek73
XX
XXtrek73:	${OBJECTS} parsit.o
XX	cc ${CFLAGS} ${OBJECTS} parsit.o ${LIBS}
XX	install a.out trek73
XX
XX${OBJECTS}: ${HEADS}
XX
XXparsit.o: parsit.c
XX	cc -O -c parsit.c
XX
XXtags: ${CFILES}
XX	ctags ${CFILES} ${HEADS}
XX
XXlint:
XX	lint -za ${CFILES} > lint.out
XX
XXclean:
XX	rm -f ${OBJECTS} parsit.o trek73 make.out errs core lint.out a.out
SHAR_EOF
if test 709 -ne "`wc -c Makefile`"
then
echo shar: error transmitting Makefile '(should have been 709 characters)'
fi
echo shar: extracting subs.c '(7513 characters)'
sed 's/^XX//' << \SHAR_EOF > subs.c
XX/*
XX * TREK73: subs.c
XX *
XX * Miscellaneous Subroutines
XX *
XX * ship_name, newitem, delitem, rangefind, bearing, phaser_hit,
XX * torpedo_hit, damage, antimatter_hit, recitfy
XX */
XX
XX#include "defines.h"
XX#include "structs.h"
XX#include <math.h>
XX#include <ctype.h>
XX
XXextern struct ship *shiplist[];
XXextern char science[];
XX
XXstruct ship *ship_name(name, start)
XXchar *name;
XXint start;
XX{
XX	extern	int shipnum;
XX	register int i;
XX	register int j;
XX	register int len;
XX
XX	if (islower(*name)) {
XX		*name = toupper(*name);
XX	}
XX	j = shipnum;
XX	len = strlen(name);
XX	for (i=start; i<=j; i++) {
XX		if (shiplist[i]->name[0] == NULL)
XX			continue;
XX		if (strncmp(name, shiplist[i]->name, len) == 0)
XX			return shiplist[i];
XX	}
XX	printf("%s: I am unable to find the %s\n", science, name);
XX	return NULL;
XX}
XX
XX
XXstruct list *newitem(item)
XXint item;
XX{
XX	extern	struct list head;
XX	extern	struct list *tail;
XX	register struct	list *new;
XX	register struct	list *newtail;
XX
XX	/*
XX	 * if there's no "tail" node, make one (only happens at init)
XX	 */
XX	if (tail == NULL) {
XX		new = MKNODE(struct list, *, 1);
XX		new->back = &head;
XX		new->fwd = NULL;
XX		new->data.tp = NULL;
XX		head.fwd = new;
XX		tail = new;
XX	}
XX	new = tail;
XX	/*
XX	 * now make the new tail node
XX	 */
XX	newtail = MKNODE(struct list, *, 1);
XX	newtail->back = new;
XX	newtail->fwd = NULL;
XX	newtail->data.tp = NULL;
XX	newtail->type = 0;
XX	tail = newtail;
XX	/*
XX	 * link the old tail node to the new one
XX	 */
XX	new->type = item;
XX	new->fwd = newtail;
XX	return new;
XX}
XX
XX
XXint delitem(item)
XXstruct list *item;
XX{
XX	extern	struct list *tail;
XX	extern	struct list head;
XX	register struct list *bp;
XX	register struct list *fp;
XX
XX	bp = item->back;
XX	fp = item->fwd;
XX	if (item->data.tp != NULL)
XX		free((char *) item->data.tp);
XX	/*
XX	 * re-arrange pointers on both the next and the previous
XX	 * nodes; if no forward pointer, we were the tail so make
XX	 * the bp the new tail node.
XX	 */
XX	if (fp != NULL) {
XX		bp->fwd = fp;
XX		fp->back = bp;
XX	} else {
XX		tail = bp;
XX		bp->fwd = NULL;
XX	}
XX	free((char *) item);
XX}
XX
XXint rangefind(x1, x2, y1, y2)
XXint x1;
XXint x2;
XXint y1;
XXint y2;
XX{
XX	extern	double sqrt();
XX	extern	double atan();
XX	register int i;
XX	register int x, y;
XX	double	d1, d2;
XX
XX	x = x2 - x1;
XX	y = y2 - y1;
XX	/*
XX	 * Both x and y must be cast as double else overflow
XX	 * may occur.
XX	 */
XX	d1 = (double) x * (double) x + (double) y * (double) y;
XX	d2 = sqrt(d1);
XX	i = d2;
XX	return i;
XX}
XX
XX/*
XX * This routine finds the bearing of (x2,y2) from (x1,y1)
XX */
XXint bearing(x1, x2, y1, y2)
XXint x1;
XXint x2;
XXint y1;
XXint y2;
XX{
XX	extern double atan();
XX	float	x;
XX	float	y;
XX	register int bear;
XX	double	d1;
XX	double	d2;
XX
XX	x = x2 - x1;
XX	y = y2 - y1;
XX	if (x == 0.0)
XX		bear = 90;
XX	else {
XX		d1 = y/x;
XX		d2 = atan(d1) * 57.2958;
XX		bear = d2;
XX	}
XX	if (x < 0.0 || y < 0.0) {
XX		bear += 180;
XX		if (x >= 0.0)
XX			bear += 180;
XX	}
XX	return bear;
XX}
XX
XXint phaser_hit(sp, x, y, bank, true_bear)
XXstruct ship *sp;
XXint x;
XXint y;
XXstruct phaser *bank;
XXint true_bear;
XX{
XX	extern	double sqrt();
XX	register int hit;
XX	int	i;
XX	int	spread;
XX	int	bear;
XX	double	d1;
XX	double	d2;
XX
XX	hit = 0;
XX	i = rangefind(sp->x, x, sp->y, y);
XX	if (i < 1000) {
XX		bear = bearing(sp->x, x, sp->y, y);
XX		spread = rectify(true_bear - bear);
XX		/*
XX		 * Check if a target is within the phaser spread
XX		 */
XX		if (spread > sp->p_spread && 360-spread > sp->p_spread)
XX			return 0;
XX		d1 = 1.0 - (float)i/1000.0;
XX		d2 = (float)bank->load * sqrt(d1) * sp->p_percent / 100;
XX		d2 = (float)bank->load * d2 * 45.0/(float)sp->p_spread * sp->p_percent / 100;
XX		hit = d2/10.0;
XX	}
XX	return hit;
XX}
XX
XXint torpedo_hit(fuel, x, y, tx, ty)
XXint fuel;
XXint x;
XXint y;
XXint tx;
XXint ty;
XX{
XX	extern	double sqrt();
XX	register int hit;
XX	int	i;
XX	double	d1;
XX	double	d2;
XX	float	f1;
XX	float	f2;
XX
XX	hit = 0;
XX	i = rangefind(x, tx, y, ty);
XX	f1 = fuel * 5.0;
XX	f2 = f1 * 10.0;
XX	if (i < f2) {
XX		d1 = 1.0 - (float)i/f2;
XX		d2 = (float)f1 * sqrt(d1);
XX		hit = d2;
XX	}
XX	return hit;
XX}
XX
XX
XXdamage(hit, ep, s, dam)
XXint hit;
XXstruct ship *ep;
XXint s;
XXstruct damage *dam;
XX{
XX	register int i;
XX	register int j;
XX	register int k;
XX	float	f1;
XX	float	f2;
XX	struct ship *fed;
XX
XX	fed = shiplist[0];
XX	printf("hit %d on %s's shield %d\n", hit, ep->name, s);
XX	s--;
XX	/*
XX	 * Note that if the shield is at 100% efficiency, no
XX	 * damage at all will be taken
XX	 */
XX	f1 = hit * (1.0 - ep->shields[s].eff * ep->shields[s].drain);
XX	if (f1 < 0)
XX		return 0;
XX	ep->eff += f1/dam->eff;
XX	ep->pods -= f1/dam->fuel;
XX	ep->energy -= f1/dam->fuel;
XX	ep->regen -= f1/dam->regen;
XX	if (ep->regen < 0.0)
XX		ep->regen = 0.0;
XX	if (ep->pods < 0.0)
XX		ep->pods = 0.0;
XX	if (ep->energy < 0.0)
XX		ep->energy = 0.0;
XX	if (ep->pods < ep->energy)
XX		ep->energy = ep->pods;
XX	f2 = dam->shield * 100;
XX	if (s == 0)
XX		f2 *= 1.5;
XX	ep->shields[s].eff -= max(hit/f2, 0);
XX	if (ep->shields[s].eff < 0.0)
XX		ep->shields[s].eff = 0.0;
XX	j = f1 * dam->crew;
XX	if (j > 0)
XX		ep->crew -= max(randm(j), 0);
XX	if (ep->crew < 0)
XX		ep->crew = 0;
XX	j = f1/dam->weapon;
XX	for(i=0; i<j; i++) {
XX		k = randm(10);
XX		if (k <= 4) {
XX			k--;
XX			if (ep->phasers[k].status & P_DAMAGED)
XX				continue;
XX			ep->phasers[k].status |= P_DAMAGED;
XX			/*
XX			 * Reroute the energy
XX			 * back to the engines
XX			 */
XX			ep->energy = min(ep->pods, ep->energy
XX			    + ep->phasers[k].load);
XX			ep->phasers[k].load = 0;
XX			ep->phasers[k].drain = 0;
XX			k++;
XX			if (ep == fed)
XX				printf("   phaser %d damaged.\n", k);
XX		} else {
XX			k -= 5;
XX			if (ep->tubes[k].status & T_DAMAGED)
XX				continue;
XX			/*
XX			 * If tubes are damaged, reroute the pods
XX			 * back to the engines
XX			 */
XX			ep->pods += ep->tubes[k].load;
XX			ep->energy += ep->tubes[k].load;
XX			ep->tubes[k].load = 0;
XX			ep->tubes[k].status |= T_DAMAGED;
XX			k++;
XX			if (ep == fed)
XX				printf("   tube %d damaged\n", k);
XX		}
XX	}
XX	for (i=0; i<4; i++) {
XX		if (ep->status & 1<<i)
XX			continue;
XX		if (randm(dam->stats[i].roll) < f1) {
XX			ep->status |= 1<<i;
XX			if (ep == fed)
XX				printf("   %s\n", dam->stats[i].mesg);
XX		}
XX	}
XX#ifdef HISTORICAL
XX	/*
XX	 * Historically, if more than 43 points of damage were done
XX	 * to the ship, it would destroy itself.  This led to much
XX	 * abuse of probes and thus has been enclosed inside of
XX	 * an #ifdef
XX	 */
XX	if (f1 > 43)
XX		ep->delay = 1;
XX#endif
XX	return 0;
XX}
XX
XX
XXantimatter_hit(ptr, x, y, fuel)
XXchar *ptr;
XXint x;
XXint y;
XXint fuel;
XX{
XX	extern	struct list head;
XX	extern	struct list *tail;
XX	extern	struct damage a_damage;
XX	register struct list *lp;
XX	register int hit;
XX	int	tarx, tary;
XX	int	s;
XX	int	bear;
XX	struct 	torpedo *tp;
XX	struct	ship *sp;
XX
XX	for (lp = &head; lp != tail; lp = lp->fwd) {
XX		if (lp->type == 0)
XX			continue;
XX		sp = NULL;
XX		tp = NULL;
XX		if (lp->type == I_SHIP) {
XX			sp = lp->data.sp;
XX			tarx = sp->x;
XX			tary = sp->y;
XX		} else {
XX			tp = lp->data.tp;
XX			tarx = tp->x;
XX			tary = tp->y;
XX		}
XX		if (sp == (struct ship *) ptr || tp == (struct torpedo *) ptr)
XX			continue;
XX		hit = torpedo_hit(fuel, x, y, tarx, tary);
XX		if (hit <= 0)
XX			continue;
XX		if (sp) {
XX			/* 
XX			 * Determine which shield is hit
XX			 */
XX			bear = rectify(bearing(tarx, x, tary, y) - sp->course);
XX			if (bear < 45 || bear > 315)
XX				s = 1;
XX			else if (bear < 135)
XX				s = 2;
XX			else if (bear < 225)
XX				s = 3;
XX			else
XX				s = 4;
XX			damage(hit, sp, s, &a_damage);
XX		} else {
XX			if (tp->timedelay <= 2)
XX				continue;
XX			tp->timedelay = 2;
XX			switch (lp->type) {
XX				case I_TORPEDO:
XX					printf("hit on torpedo %d\n", 
XX						tp->id);
XX					break;
XX				case I_PROBE:
XX					printf("hit on probe %d\n", 
XX						tp->id);
XX					break;
XX				case I_ENG:
XX					printf("hit on %s engineering\n",
XX						tp->from->name);
XX					break;
XX			}
XX		}
XX	}
XX}
XX
XXint rectify(x)
XXint x;
XX{
XX	register int ret;
XX
XX	ret = x;
XX	if (ret < 0)
XX		ret += 360;
XX	else if (ret > 360)
XX		ret -= 360;
XX	return ret;
XX}
SHAR_EOF
if test 7513 -ne "`wc -c subs.c`"
then
echo shar: error transmitting subs.c '(should have been 7513 characters)'
fi
#	End of shell archive
exit 0