kernel/acpi: Match _HID instead of relying on _CID for PCIe.
[dragonfly.git] / games / trek / attack.c
bloba783f859dc26485ca7ab3a10a17aa60c8f4891c8
1 /*-
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
7 * are met:
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
27 * SUCH DAMAGE.
29 * @(#)attack.c 8.1 (Berkeley) 5/31/93
30 * $FreeBSD: src/games/trek/attack.c,v 1.4 1999/11/30 03:49:43 billf Exp $
31 * $DragonFly: src/games/trek/attack.c,v 1.3 2006/09/07 21:19:44 pavalos Exp $
34 #include "trek.h"
37 ** Klingon Attack Routine
39 ** This routine performs the Klingon attack provided that
40 ** (1) Something happened this move (i.e., not free), and
41 ** (2) You are not cloaked. Note that if you issue the
42 ** cloak command, you are not considered cloaked until you
43 ** expend some time.
45 ** Klingons are permitted to move both before and after the
46 ** attack. They will tend to move toward you before the
47 ** attack and away from you after the attack.
49 ** Under certain conditions you can get a critical hit. This
50 ** sort of hit damages devices. The probability that a given
51 ** device is damaged depends on the device. Well protected
52 ** devices (such as the computer, which is in the core of the
53 ** ship and has considerable redundancy) almost never get
54 ** damaged, whereas devices which are exposed (such as the
55 ** warp engines) or which are particularly delicate (such as
56 ** the transporter) have a much higher probability of being
57 ** damaged.
59 ** The actual amount of damage (i.e., how long it takes to fix
60 ** it) depends on the amount of the hit and the "damfac[]"
61 ** entry for the particular device.
63 ** Casualties can also occur.
66 /* resting: set if attack while resting */
67 void
68 attack(int resting)
70 int hit, i, l;
71 int maxhit, tothit, shldabsb;
72 double chgfac, propor, extradm;
73 double dustfac, tothe;
74 int cas;
75 int hitflag;
77 if (Move.free)
78 return;
79 if (Etc.nkling <= 0 || Quad[Ship.quadx][Ship.quady].stars < 0)
80 return;
81 if (Ship.cloaked && Ship.cloakgood)
82 return;
83 /* move before attack */
84 klmove(0);
85 if (Ship.cond == DOCKED) {
86 if (!resting)
87 printf("Starbase shields protect the %s\n", Ship.shipname);
88 return;
90 /* setup shield effectiveness */
91 chgfac = 1.0;
92 if (Move.shldchg)
93 chgfac = 0.25 + 0.50 * franf();
94 maxhit = tothit = 0;
95 hitflag = 0;
97 /* let each Klingon do his damndest */
98 for (i = 0; i < Etc.nkling; i++) {
99 /* if he's low on power he won't attack */
100 if (Etc.klingon[i].power < 20)
101 continue;
102 if (!hitflag) {
103 printf("\nStardate %.2f: Klingon attack:\n",
104 Now.date);
105 hitflag++;
107 /* complete the hit */
108 dustfac = 0.90 + 0.01 * franf();
109 tothe = Etc.klingon[i].avgdist;
110 hit = Etc.klingon[i].power * pow(dustfac, tothe) * Param.hitfac;
111 /* deplete his energy */
112 dustfac = Etc.klingon[i].power;
113 Etc.klingon[i].power = dustfac * Param.phasfac * (1.0 + (franf() - 0.5) * 0.2);
114 /* see how much of hit shields will absorb */
115 shldabsb = 0;
116 if (Ship.shldup || Move.shldchg) {
117 propor = Ship.shield;
118 propor /= Param.shield;
119 shldabsb = propor * chgfac * hit;
120 if (shldabsb > Ship.shield)
121 shldabsb = Ship.shield;
122 Ship.shield -= shldabsb;
124 /* actually do the hit */
125 printf("\aHIT: %d units", hit);
126 if (!damaged(SRSCAN))
127 printf(" from %d,%d", Etc.klingon[i].x, Etc.klingon[i].y);
128 cas = (shldabsb * 100) / hit;
129 hit -= shldabsb;
130 if (shldabsb > 0)
131 printf(", shields absorb %d%%, effective hit %d\n",
132 cas, hit);
133 else
134 printf("\n");
135 tothit += hit;
136 if (hit > maxhit)
137 maxhit = hit;
138 Ship.energy -= hit;
139 /* see if damages occurred */
140 if (hit >= (15 - Game.skill) * (25 - ranf(12))) {
141 printf("\aCRITICAL HIT!!!\a\n");
142 /* select a device from probability vector */
143 cas = ranf(1000);
144 for (l = 0; cas >= 0; l++)
145 cas -= Param.damprob[l];
146 l -= 1;
147 /* compute amount of damage */
148 extradm = (hit * Param.damfac[l]) / (75 + ranf(25)) + 0.5;
149 /* damage the device */
150 damage(l, extradm);
151 if (damaged(SHIELD)) {
152 if (Ship.shldup)
153 printf("Sulu: Shields knocked down, captain.\n");
154 Ship.shldup = 0;
155 Move.shldchg = 0;
158 if (Ship.energy <= 0)
159 lose(L_DSTRYD);
162 /* see what our casualities are like */
163 if (maxhit >= 200 || tothit >= 500) {
164 cas = tothit * 0.015 * franf();
165 if (cas >= 2) {
166 printf("McCoy: we suffered %d casualties in that attack.\n",
167 cas);
168 Game.deaths += cas;
169 Ship.crew -= cas;
173 /* allow Klingons to move after attacking */
174 klmove(1);
176 return;