2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#)torped.c 8.1 (Berkeley) 5/31/93
30 * $FreeBSD: src/games/trek/torped.c,v 1.5 1999/11/30 03:49:55 billf Exp $
31 * $DragonFly: src/games/trek/torped.c,v 1.3 2006/09/07 21:19:44 pavalos Exp $
37 static int randcourse(int);
40 ** PHOTON TORPEDO CONTROL
42 ** Either one or three photon torpedoes are fired. If three
43 ** are fired, it is called a "burst" and you also specify
46 ** Torpedoes are never 100% accurate. There is always a random
47 ** cludge factor in their course which is increased if you have
48 ** your shields up. Hence, you will find that they are more
49 ** accurate at close range. However, they have the advantage that
50 ** at long range they don't lose any of their power as phasers
51 ** do, i.e., a hit is a hit is a hit, by any other name.
53 ** When the course spreads too much, you get a misfire, and the
54 ** course is randomized even more. You also have the chance that
55 ** the misfire damages your torpedo tubes.
59 torped(int v __unused)
72 printf("Federation regulations do not permit attack while cloaked.\n");
75 if (check_out(TORPED))
77 if (Ship.torped <= 0) {
78 printf("All photon torpedos expended\n");
83 course = getintpar("Torpedo course");
84 if (course < 0 || course > 360)
88 /* need at least three torpedoes for a burst */
89 if (Ship.torped < 3) {
90 printf("No-burst mode selected\n");
93 /* see if the user wants one */
95 k = ungetc(cgetc(0), stdin);
96 if (k >= '0' && k <= '9')
101 burst = getynpar("Do you want a burst");
104 burst = getintpar("burst angle");
108 printf("Maximum burst angle is 15 degrees\n");
118 for (; n && n <= 3; n++) {
119 /* select a nice random course */
120 course2 = course + randcourse(n);
121 angle = course2 * 0.0174532925; /* convert to radians */
130 x = Ship.sectx + 0.5;
131 y = Ship.secty + 0.5;
132 if (Ship.cond != DOCKED)
134 printf("Torpedo track");
136 printf(", torpedo number %d", n);
137 printf(":\n%6.1f\t%4.1f\n", x, y);
141 if (x < 0.0 || x >= sectsize ||
142 y < 0.0 || y >= sectsize) {
143 printf("Torpedo missed\n");
146 printf("%6.1f\t%4.1f\n", x, y);
147 switch (Sect[ix][iy]) {
152 printf("Torpedo disappears into a black hole\n");
156 for (k = 0; k < Etc.nkling; k++) {
157 if (Etc.klingon[k].x != ix || Etc.klingon[k].y != iy)
159 Etc.klingon[k].power -= 500 + ranf(501);
160 if (Etc.klingon[k].power > 0) {
161 printf("*** Hit on Klingon at %d,%d: extensive damages\n",
179 killb(Ship.quadx, Ship.quady);
183 printf("Unknown object %c at %d,%d destroyed\n",
184 Sect[ix][iy], ix, iy);
185 Sect[ix][iy] = EMPTY;
190 if (damaged(TORPED) || Quad[Ship.quadx][Ship.quady].stars < 0)
201 ** This routine randomizes the course for torpedo number 'n'.
202 ** Other things handled by this routine are misfires, damages
203 ** to the tubes, etc.
212 d = ((franf() + franf()) - 1.0) * 20;
214 printf("Photon tubes misfire");
218 printf(" on torpedo %d\n", n);
220 damage(TORPED, 0.2 * abs(d) * (franf() + 1.0));
222 d *= 1.0 + 2.0 * franf();
224 if (Ship.shldup || Ship.cond == DOCKED) {
226 r = 1.0 + r / Param.shield;
227 if (Ship.cond == DOCKED)