From 77e3814f0c0e3dea4d0032e25666f77e6f83bfff Mon Sep 17 00:00:00 2001 From: cgd Date: Sun, 21 Mar 1993 09:45:37 +0000 Subject: initial import of 386bsd-0.1 sources --- trek/torped.c | 247 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 247 insertions(+) create mode 100644 trek/torped.c (limited to 'trek/torped.c') diff --git a/trek/torped.c b/trek/torped.c new file mode 100644 index 00000000..5e42d309 --- /dev/null +++ b/trek/torped.c @@ -0,0 +1,247 @@ +/* + * 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[] = "@(#)torped.c 5.4 (Berkeley) 6/1/90"; +#endif /* not lint */ + +# include +# include "trek.h" + +/* +** PHOTON TORPEDO CONTROL +** +** Either one or three photon torpedoes are fired. If three +** are fired, it is called a "burst" and you also specify +** a spread angle. +** +** Torpedoes are never 100% accurate. There is always a random +** cludge factor in their course which is increased if you have +** your shields up. Hence, you will find that they are more +** accurate at close range. However, they have the advantage that +** at long range they don't lose any of their power as phasers +** do, i.e., a hit is a hit is a hit, by any other name. +** +** When the course spreads too much, you get a misfire, and the +** course is randomized even more. You also have the chance that +** the misfire damages your torpedo tubes. +*/ + + +torped() +{ + register int ix, iy; + double x, y, dx, dy; + double angle; + int course, course2; + register int k; + double bigger; + double sectsize; + int burst; + int n; + + if (Ship.cloaked) + { + return (printf("Federation regulations do not permit attack while cloaked.\n")); + } + if (check_out(TORPED)) + return; + if (Ship.torped <= 0) + { + return (printf("All photon torpedos expended\n")); + } + + /* get the course */ + course = getintpar("Torpedo course"); + if (course < 0 || course > 360) + return; + burst = -1; + + /* need at least three torpedoes for a burst */ + if (Ship.torped < 3) + { + printf("No-burst mode selected\n"); + burst = 0; + } + else + { + /* see if the user wants one */ + if (!testnl()) + { + k = ungetc(cgetc(0), stdin); + if (k >= '0' && k <= '9') + burst = 1; + } + } + if (burst < 0) + { + burst = getynpar("Do you want a burst"); + } + if (burst) + { + burst = getintpar("burst angle"); + if (burst <= 0) + return; + if (burst > 15) + return (printf("Maximum burst angle is 15 degrees\n")); + } + sectsize = NSECTS; + n = -1; + if (burst) + { + n = 1; + course -= burst; + } + for (; n && n <= 3; n++) + { + /* select a nice random course */ + course2 = course + randcourse(n); + angle = course2 * 0.0174532925; /* convert to radians */ + dx = -cos(angle); + dy = sin(angle); + bigger = fabs(dx); + x = fabs(dy); + if (x > bigger) + bigger = x; + dx /= bigger; + dy /= bigger; + x = Ship.sectx + 0.5; + y = Ship.secty + 0.5; + if (Ship.cond != DOCKED) + Ship.torped -= 1; + printf("Torpedo track"); + if (n > 0) + printf(", torpedo number %d", n); + printf(":\n%6.1f\t%4.1f\n", x, y); + while (1) + { + ix = x += dx; + iy = y += dy; + if (x < 0.0 || x >= sectsize || y < 0.0 || y >= sectsize) + { + printf("Torpedo missed\n"); + break; + } + printf("%6.1f\t%4.1f\n", x, y); + switch (Sect[ix][iy]) + { + case EMPTY: + continue; + + case HOLE: + printf("Torpedo disappears into a black hole\n"); + break; + + case KLINGON: + for (k = 0; k < Etc.nkling; k++) + { + if (Etc.klingon[k].x != ix || Etc.klingon[k].y != iy) + continue; + Etc.klingon[k].power -= 500 + ranf(501); + if (Etc.klingon[k].power > 0) + { + printf("*** Hit on Klingon at %d,%d: extensive damages\n", + ix, iy); + break; + } + killk(ix, iy); + break; + } + break; + + case STAR: + nova(ix, iy); + break; + + case INHABIT: + kills(ix, iy, -1); + break; + + case BASE: + killb(Ship.quadx, Ship.quady); + Game.killb += 1; + break; + default: + printf("Unknown object %c at %d,%d destroyed\n", + Sect[ix][iy], ix, iy); + Sect[ix][iy] = EMPTY; + break; + } + break; + } + if (damaged(TORPED) || Quad[Ship.quadx][Ship.quady].stars < 0) + break; + course += burst; + } + Move.free = 0; +} + + +/* +** RANDOMIZE COURSE +** +** This routine randomizes the course for torpedo number 'n'. +** Other things handled by this routine are misfires, damages +** to the tubes, etc. +*/ + +randcourse(n) +int n; +{ + double r; + register int d; + + d = ((franf() + franf()) - 1.0) * 20; + if (abs(d) > 12) + { + printf("Photon tubes misfire"); + if (n < 0) + printf("\n"); + else + printf(" on torpedo %d\n", n); + if (ranf(2)) + { + damage(TORPED, 0.2 * abs(d) * (franf() + 1.0)); + } + d *= 1.0 + 2.0 * franf(); + } + if (Ship.shldup || Ship.cond == DOCKED) + { + r = Ship.shield; + r = 1.0 + r / Param.shield; + if (Ship.cond == DOCKED) + r = 2.0; + d *= r; + } + return (d); +} -- cgit v1.2.3-56-ge451