1 /* 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)attack.c 8.1 (Berkeley) 05/31/93"; 10 #endif /* not lint */ 11 12 # include "trek.h" 13 14 /* 15 ** Klingon Attack Routine 16 ** 17 ** This routine performs the Klingon attack provided that 18 ** (1) Something happened this move (i.e., not free), and 19 ** (2) You are not cloaked. Note that if you issue the 20 ** cloak command, you are not considered cloaked until you 21 ** expend some time. 22 ** 23 ** Klingons are permitted to move both before and after the 24 ** attack. They will tend to move toward you before the 25 ** attack and away from you after the attack. 26 ** 27 ** Under certain conditions you can get a critical hit. This 28 ** sort of hit damages devices. The probability that a given 29 ** device is damaged depends on the device. Well protected 30 ** devices (such as the computer, which is in the core of the 31 ** ship and has considerable redundancy) almost never get 32 ** damaged, whereas devices which are exposed (such as the 33 ** warp engines) or which are particularly delicate (such as 34 ** the transporter) have a much higher probability of being 35 ** damaged. 36 ** 37 ** The actual amount of damage (i.e., how long it takes to fix 38 ** it) depends on the amount of the hit and the "damfac[]" 39 ** entry for the particular device. 40 ** 41 ** Casualties can also occur. 42 */ 43 44 attack(resting) 45 int resting; /* set if attack while resting */ 46 { 47 register int hit, i, l; 48 int maxhit, tothit, shldabsb; 49 double chgfac, propor, extradm; 50 double dustfac, tothe; 51 int cas; 52 int hitflag; 53 54 if (Move.free) 55 return; 56 if (Etc.nkling <= 0 || Quad[Ship.quadx][Ship.quady].stars < 0) 57 return; 58 if (Ship.cloaked && Ship.cloakgood) 59 return; 60 /* move before attack */ 61 klmove(0); 62 if (Ship.cond == DOCKED) 63 { 64 if (!resting) 65 printf("Starbase shields protect the %s\n", Ship.shipname); 66 return; 67 } 68 /* setup shield effectiveness */ 69 chgfac = 1.0; 70 if (Move.shldchg) 71 chgfac = 0.25 + 0.50 * franf(); 72 maxhit = tothit = 0; 73 hitflag = 0; 74 75 /* let each Klingon do his damndest */ 76 for (i = 0; i < Etc.nkling; i++) 77 { 78 /* if he's low on power he won't attack */ 79 if (Etc.klingon[i].power < 20) 80 continue; 81 if (!hitflag) 82 { 83 printf("\nStardate %.2f: Klingon attack:\n", 84 Now.date); 85 hitflag++; 86 } 87 /* complete the hit */ 88 dustfac = 0.90 + 0.01 * franf(); 89 tothe = Etc.klingon[i].avgdist; 90 hit = Etc.klingon[i].power * pow(dustfac, tothe) * Param.hitfac; 91 /* deplete his energy */ 92 dustfac = Etc.klingon[i].power; 93 Etc.klingon[i].power = dustfac * Param.phasfac * (1.0 + (franf() - 0.5) * 0.2); 94 /* see how much of hit shields will absorb */ 95 shldabsb = 0; 96 if (Ship.shldup || Move.shldchg) 97 { 98 propor = Ship.shield; 99 propor /= Param.shield; 100 shldabsb = propor * chgfac * hit; 101 if (shldabsb > Ship.shield) 102 shldabsb = Ship.shield; 103 Ship.shield -= shldabsb; 104 } 105 /* actually do the hit */ 106 printf("HIT: %d units", hit); 107 if (!damaged(SRSCAN)) 108 printf(" from %d,%d", Etc.klingon[i].x, Etc.klingon[i].y); 109 cas = (shldabsb * 100) / hit; 110 hit -= shldabsb; 111 if (shldabsb > 0) 112 printf(", shields absorb %d%%, effective hit %d\n", 113 cas, hit); 114 else 115 printf("\n"); 116 tothit += hit; 117 if (hit > maxhit) 118 maxhit = hit; 119 Ship.energy -= hit; 120 /* see if damages occurred */ 121 if (hit >= (15 - Game.skill) * (25 - ranf(12))) 122 { 123 printf("CRITICAL HIT!!!\n"); 124 /* select a device from probability vector */ 125 cas = ranf(1000); 126 for (l = 0; cas >= 0; l++) 127 cas -= Param.damprob[l]; 128 l -= 1; 129 /* compute amount of damage */ 130 extradm = (hit * Param.damfac[l]) / (75 + ranf(25)) + 0.5; 131 /* damage the device */ 132 damage(l, extradm); 133 if (damaged(SHIELD)) 134 { 135 if (Ship.shldup) 136 printf("Sulu: Shields knocked down, captain.\n"); 137 Ship.shldup = 0; 138 Move.shldchg = 0; 139 } 140 } 141 if (Ship.energy <= 0) 142 lose(L_DSTRYD); 143 } 144 145 /* see what our casualities are like */ 146 if (maxhit >= 200 || tothit >= 500) 147 { 148 cas = tothit * 0.015 * franf(); 149 if (cas >= 2) 150 { 151 printf("McCoy: we suffered %d casualties in that attack.\n", 152 cas); 153 Game.deaths += cas; 154 Ship.crew -= cas; 155 } 156 } 157 158 /* allow Klingons to move after attacking */ 159 klmove(1); 160 161 return; 162 } 163