initial import of 386bsd-0.1 sources

1 files changed, 157 insertions, 0 deletions

diff --git a/trek/help.c b/trek/help.c
new file mode 100644
index 00000000..091210b0
--- /dev/null
+++ b/trek/help.c
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 1980 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[] = "@(#)help.c	5.4 (Berkeley) 6/1/90";
+#endif /* not lint */
+
+# include	"trek.h"
+
+/*
+**  call starbase for help
+**
+**	First, the closest starbase is selected.  If there is a
+**	a starbase in your own quadrant, you are in good shape.
+**	This distance takes quadrant distances into account only.
+**
+**	A magic number is computed based on the distance which acts
+**	as the probability that you will be rematerialized.  You
+**	get three tries.
+**
+**	When it is determined that you should be able to be remater-
+**	ialized (i.e., when the probability thing mentioned above
+**	comes up positive), you are put into that quadrant (anywhere).
+**	Then, we try to see if there is a spot adjacent to the star-
+**	base.  If not, you can't be rematerialized!!!  Otherwise,
+**	it drops you there.  It only tries five times to find a spot
+**	to drop you.  After that, it's your problem.
+*/
+
+char	*Cntvect[3] =
+{"first", "second", "third"};
+
+help()
+{
+	register int		i;
+	double			dist, x;
+	register int		dx, dy;
+	int			j, l;
+
+	/* check to see if calling for help is reasonable ... */
+	if (Ship.cond == DOCKED)
+		return (printf("Uhura: But Captain, we're already docked\n"));
+
+	/* or possible */
+	if (damaged(SSRADIO))
+		return (out(SSRADIO));
+	if (Now.bases <= 0)
+		return (printf("Uhura: I'm not getting any response from starbase\n"));
+
+	/* tut tut, there goes the score */
+	Game.helps += 1;
+
+	/* find the closest base */
+	dist = 1e50;
+	if (Quad[Ship.quadx][Ship.quady].bases <= 0)
+	{
+		/* there isn't one in this quadrant */
+		for (i = 0; i < Now.bases; i++)
+		{
+			/* compute distance */
+			dx = Now.base[i].x - Ship.quadx;
+			dy = Now.base[i].y - Ship.quady;
+			x = dx * dx + dy * dy;
+			x = sqrt(x);
+
+			/* see if better than what we already have */
+			if (x < dist)
+			{
+				dist = x;
+				l = i;
+			}
+		}
+
+		/* go to that quadrant */
+		Ship.quadx = Now.base[l].x;
+		Ship.quady = Now.base[l].y;
+		initquad(1);
+	}
+	else
+	{
+		dist = 0.0;
+	}
+
+	/* dematerialize the Enterprise */
+	Sect[Ship.sectx][Ship.secty] = EMPTY;
+	printf("Starbase in %d,%d responds\n", Ship.quadx, Ship.quady);
+
+	/* this next thing acts as a probability that it will work */
+	x = pow(1.0 - pow(0.94, dist), 0.3333333);
+
+	/* attempt to rematerialize */
+	for (i = 0; i < 3; i++)
+	{
+		sleep(2);
+		printf("%s attempt to rematerialize ", Cntvect[i]);
+		if (franf() > x)
+		{
+			/* ok, that's good.  let's see if we can set her down */
+			for (j = 0; j < 5; j++)
+			{
+				dx = Etc.starbase.x + ranf(3) - 1;
+				if (dx < 0 || dx >= NSECTS)
+					continue;
+				dy = Etc.starbase.y + ranf(3) - 1;
+				if (dy < 0 || dy >= NSECTS || Sect[dx][dy] != EMPTY)
+					continue;
+				break;
+			}
+			if (j < 5)
+			{
+				/* found an empty spot */
+				printf("succeeds\n");
+				Ship.sectx = dx;
+				Ship.secty = dy;
+				Sect[dx][dy] = Ship.ship;
+				dock();
+				compkldist(0);
+				return;
+			}
+			/* the starbase must have been surrounded */
+		}
+		printf("fails\n");
+	}
+
+	/* one, two, three strikes, you're out */
+	lose(L_NOHELP);
+}