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      1 /*	$NetBSD: dr_1.c,v 1.27 2009/03/14 22:52:52 dholland Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1983, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)dr_1.c	8.1 (Berkeley) 5/31/93";
     36 #else
     37 __RCSID("$NetBSD: dr_1.c,v 1.27 2009/03/14 22:52:52 dholland Exp $");
     38 #endif
     39 #endif /* not lint */
     40 
     41 #include <ctype.h>
     42 #include <stdio.h>
     43 #include <stdlib.h>
     44 #include <string.h>
     45 #include "extern.h"
     46 #include "driver.h"
     47 
     48 static int fightitout(struct ship *, struct ship *, int);
     49 
     50 void
     51 unfoul(void)
     52 {
     53 	struct ship *sp;
     54 	struct ship *to;
     55 	int nat;
     56 	int i;
     57 
     58 	foreachship(sp) {
     59 		if (sp->file->captain[0])
     60 			continue;
     61 		nat = capship(sp)->nationality;
     62 		foreachship(to) {
     63 			if (nat != capship(to)->nationality &&
     64 			    !is_toughmelee(sp, to, 0, 0))
     65 				continue;
     66 			for (i = fouled2(sp, to); --i >= 0;)
     67 				if (dieroll() <= 2)
     68 					cleanfoul(sp, to, 0);
     69 		}
     70 	}
     71 }
     72 
     73 void
     74 boardcomp(void)
     75 {
     76 	int crew[3];
     77 	struct ship *sp, *sq;
     78 
     79 	foreachship(sp) {
     80 		if (*sp->file->captain)
     81 			continue;
     82 		if (sp->file->dir == 0)
     83 			continue;
     84 		if (sp->file->struck || sp->file->captured != 0)
     85 			continue;
     86 		if (!snagged(sp))
     87 			continue;
     88 		crew[0] = sp->specs->crew1 != 0;
     89 		crew[1] = sp->specs->crew2 != 0;
     90 		crew[2] = sp->specs->crew3 != 0;
     91 		foreachship(sq) {
     92 			if (!Xsnagged2(sp, sq))
     93 				continue;
     94 			if (meleeing(sp, sq))
     95 				continue;
     96 			if (!sq->file->dir
     97 				|| sp->nationality == capship(sq)->nationality)
     98 				continue;
     99 			switch (sp->specs->class - sq->specs->class) {
    100 			case -3: case -4: case -5:
    101 				if (crew[0]) {
    102 					/* OBP */
    103 					sendbp(sp, sq, crew[0]*100, 0);
    104 					crew[0] = 0;
    105 				} else if (crew[1]) {
    106 					/* OBP */
    107 					sendbp(sp, sq, crew[1]*10, 0);
    108 					crew[1] = 0;
    109 				}
    110 				break;
    111 			case -2:
    112 				if (crew[0] || crew[1]) {
    113 					/* OBP */
    114 					sendbp(sp, sq, crew[0]*100+crew[1]*10,
    115 						0);
    116 					crew[0] = crew[1] = 0;
    117 				}
    118 				break;
    119 			case -1: case 0: case 1:
    120 				if (crew[0]) {
    121 					/* OBP */
    122 					sendbp(sp, sq, crew[0]*100+crew[1]*10,
    123 						0);
    124 					crew[0] = crew[1] = 0;
    125 				}
    126 				break;
    127 			case 2: case 3: case 4: case 5:
    128 				/* OBP */
    129 				sendbp(sp, sq, crew[0]*100+crew[1]*10+crew[2],
    130 					0);
    131 				crew[0] = crew[1] = crew[2] = 0;
    132 				break;
    133 			}
    134 		}
    135 	}
    136 }
    137 
    138 static int
    139 fightitout(struct ship *from, struct ship *to, int key)
    140 {
    141 	struct ship *fromcap, *tocap;
    142 	int crewfrom[3], crewto[3], menfrom, mento;
    143 	int pcto, pcfrom, fromstrength, strengthto, frominjured, toinjured;
    144 	int topoints;
    145 	int indx, totalfrom = 0, totalto = 0;
    146 	int count;
    147 	char message[60];
    148 
    149 	menfrom = mensent(from, to, crewfrom, &fromcap, &pcfrom, key);
    150 	mento = mensent(to, from, crewto, &tocap, &pcto, 0);
    151 	if (fromcap == 0)
    152 		fromcap = from;
    153 	if (tocap == 0)
    154 		tocap = to;
    155 	if (key) {
    156 		if (!menfrom) {		 /* if crew surprised */
    157 			if (fromcap == from)
    158 				menfrom = from->specs->crew1
    159 					+ from->specs->crew2
    160 					+ from->specs->crew3;
    161 			else
    162 				menfrom = from->file->pcrew;
    163 		} else {
    164 			menfrom *= 2;	/* DBP's fight at an advantage */
    165 		}
    166 	}
    167 	fromstrength = menfrom * fromcap->specs->qual;
    168 	strengthto = mento * tocap->specs->qual;
    169 	for (count = 0;
    170 	     ((fromstrength < strengthto * 3 && strengthto < fromstrength * 3)
    171 	      || fromstrength == -1) && count < 4;
    172 	     count++) {
    173 		indx = fromstrength/10;
    174 		if (indx > 8)
    175 			indx = 8;
    176 		toinjured = MT[indx][2 - dieroll() / 3];
    177 		totalto += toinjured;
    178 		indx = strengthto/10;
    179 		if (indx > 8)
    180 			indx = 8;
    181 		frominjured = MT[indx][2 - dieroll() / 3];
    182 		totalfrom += frominjured;
    183 		menfrom -= frominjured;
    184 		mento -= toinjured;
    185 		fromstrength = menfrom * fromcap->specs->qual;
    186 		strengthto = mento * tocap->specs->qual;
    187 	}
    188 	if (fromstrength >= strengthto * 3 || count == 4) {
    189 		unboard(to, from, 0);
    190 		subtract(from, fromcap, totalfrom, crewfrom, pcfrom);
    191 		subtract(to, tocap, totalto, crewto, pcto);
    192 		makemsg(from, "boarders from %s repelled", to->shipname);
    193 		snprintf(message, sizeof(message),
    194 			"killed in melee: %d.  %s: %d",
    195 			totalto, from->shipname, totalfrom);
    196 		send_signal(to, message);
    197 		if (key)
    198 			return 1;
    199 	} else if (strengthto >= fromstrength * 3) {
    200 		unboard(from, to, 0);
    201 		subtract(from, fromcap, totalfrom, crewfrom, pcfrom);
    202 		subtract(to, tocap, totalto, crewto, pcto);
    203 		if (key) {
    204 			if (fromcap != from)
    205 				send_points(fromcap,
    206 					fromcap->file->points -
    207 						from->file->struck
    208 						? from->specs->pts
    209 						: 2 * from->specs->pts);
    210 
    211 			send_captured(from, to->file->index);
    212 			topoints = 2 * from->specs->pts + to->file->points;
    213 			if (from->file->struck)
    214 				topoints -= from->specs->pts;
    215 			send_points(to, topoints);
    216 			mento = crewto[0] ? crewto[0] : crewto[1];
    217 			if (mento) {
    218 				subtract(to, tocap, mento, crewto, pcto);
    219 				subtract(from, to, - mento, crewfrom, 0);
    220 			}
    221 			snprintf(message, sizeof(message),
    222 				"captured by the %s!", to->shipname);
    223 			send_signal(from, message);
    224 			snprintf(message, sizeof(message),
    225 				"killed in melee: %d.  %s: %d",
    226 				totalto, from->shipname, totalfrom);
    227 			send_signal(to, message);
    228 			mento = 0;
    229 			return 0;
    230 		}
    231 	}
    232 	return 0;
    233 }
    234 
    235 void
    236 resolve(void)
    237 {
    238 	int thwart;
    239 	struct ship *sp, *sq;
    240 
    241 	foreachship(sp) {
    242 		if (sp->file->dir == 0)
    243 			continue;
    244 		for (sq = sp + 1; sq < ls; sq++)
    245 			if (sq->file->dir && meleeing(sp, sq) &&
    246 			    meleeing(sq, sp))
    247 				fightitout(sp, sq, 0);
    248 		thwart = 2;
    249 		foreachship(sq) {
    250 			if (sq->file->dir && meleeing(sq, sp))
    251 				thwart = fightitout(sp, sq, 1);
    252 			if (!thwart)
    253 				break;
    254 		}
    255 		if (!thwart) {
    256 			foreachship(sq) {
    257 				if (sq->file->dir && meleeing(sq, sp))
    258 					unboard(sq, sp, 0);
    259 				unboard(sp, sq, 0);
    260 			}
    261 			unboard(sp, sp, 1);
    262 		} else if (thwart == 2)
    263 			unboard(sp, sp, 1);
    264 	}
    265 }
    266 
    267 void
    268 compcombat(void)
    269 {
    270 	int n;
    271 	struct ship *sp;
    272 	struct ship *closest;
    273 	int crew[3], men = 0, target, temp;
    274 	int r, guns, ready, load, car;
    275 	int indx, rakehim, sternrake;
    276 	int shootat, hit;
    277 
    278 	foreachship(sp) {
    279 		if (sp->file->captain[0] || sp->file->dir == 0)
    280 			continue;
    281 		crew[0] = sp->specs->crew1;
    282 		crew[1] = sp->specs->crew2;
    283 		crew[2] = sp->specs->crew3;
    284 		for (n = 0; n < 3; n++) {
    285 			if (sp->file->OBP[n].turnsent)
    286 				men += sp->file->OBP[n].mensent;
    287 		}
    288 		for (n = 0; n < 3; n++) {
    289 			if (sp->file->DBP[n].turnsent)
    290 				men += sp->file->DBP[n].mensent;
    291 		}
    292 		if (men) {
    293 			crew[0] = men/100 ? 0 : crew[0] != 0;
    294 			crew[1] = (men%100)/10 ? 0 : crew[1] != 0;
    295 			crew[2] = men%10 ? 0 : crew[2] != 0;
    296 		}
    297 		for (r = 0; r < 2; r++) {
    298 			if (!crew[2])
    299 				continue;
    300 			if (sp->file->struck)
    301 				continue;
    302 			if (r) {
    303 				ready = sp->file->readyR;
    304 				guns = sp->specs->gunR;
    305 				car = sp->specs->carR;
    306 			} else {
    307 				ready = sp->file->readyL;
    308 				guns = sp->specs->gunL;
    309 				car = sp->specs->carL;
    310 			}
    311 			if (!guns && !car)
    312 				continue;
    313 			if ((ready & R_LOADED) == 0)
    314 				continue;
    315 			closest = closestenemy(sp, r ? 'r' : 'l', 0);
    316 			if (closest == 0)
    317 				continue;
    318 			if (range(closest, sp) >
    319 			    range(sp, closestenemy(sp, r ? 'r' : 'l', 1)))
    320 				continue;
    321 			if (closest->file->struck)
    322 				continue;
    323 			target = range(sp, closest);
    324 			if (target > 10)
    325 				continue;
    326 			if (!guns && target >= 3)
    327 				continue;
    328 			load = L_ROUND;
    329 			if (target == 1 && sp->file->loadwith == L_GRAPE)
    330 				load = L_GRAPE;
    331 			if (target <= 3 && closest->file->FS)
    332 				load = L_CHAIN;
    333 			if (target == 1 && load != L_GRAPE)
    334 				load = L_DOUBLE;
    335 			if (load > L_CHAIN && target < 6)
    336 				shootat = HULL;
    337 			else
    338 				shootat = RIGGING;
    339 			rakehim = gunsbear(sp, closest)
    340 				&& !gunsbear(closest, sp);
    341 			temp = portside(closest, sp, 1)
    342 				- closest->file->dir + 1;
    343 			if (temp < 1)
    344 				temp += 8;
    345 			if (temp > 8)
    346 				temp -= 8;
    347 			sternrake = temp > 4 && temp < 6;
    348 			indx = guns;
    349 			if (target < 3)
    350 				indx += car;
    351 			indx = (indx - 1) / 3;
    352 			indx = indx > 8 ? 8 : indx;
    353 			if (!rakehim)
    354 				hit = HDT[indx][target-1];
    355 			else
    356 				hit = HDTrake[indx][target-1];
    357 			if (rakehim && sternrake)
    358 				hit++;
    359 			hit += QUAL[indx][capship(sp)->specs->qual - 1];
    360 			for (n = 0; n < 3 && sp->file->captured == 0; n++) {
    361 				if (!crew[n]) {
    362 					if (indx <= 5)
    363 						hit--;
    364 					else
    365 						hit -= 2;
    366 				}
    367 			}
    368 			if (ready & R_INITIAL) {
    369 				if (!r)
    370 					sp->file->readyL &= ~R_INITIAL;
    371 				else
    372 					sp->file->readyR &= ~R_INITIAL;
    373 				if (indx <= 3)
    374 					hit++;
    375 				else
    376 					hit += 2;
    377 			}
    378 			if (sp->file->captured != 0) {
    379 				if (indx <= 1)
    380 					hit--;
    381 				else
    382 					hit -= 2;
    383 			}
    384 			hit += AMMO[indx][load - 1];
    385 			temp = sp->specs->class;
    386 			if ((temp >= 5 || temp == 1) && windspeed == 5)
    387 				hit--;
    388 			if (windspeed == 6 && temp == 4)
    389 				hit -= 2;
    390 			if (windspeed == 6 && temp <= 3)
    391 				hit--;
    392 			if (hit >= 0) {
    393 				if (load != L_GRAPE)
    394 					hit = hit > 10 ? 10 : hit;
    395 				table(sp, closest, shootat, load, hit,
    396 				      dieroll());
    397 			}
    398 		}
    399 	}
    400 }
    401 
    402 int
    403 next(void)
    404 {
    405 	if (++turn % 55 == 0) {
    406 		if (alive)
    407 			alive = 0;
    408 		else
    409 			people = 0;
    410 	}
    411 	if (people <= 0 || windspeed == 7) {
    412 		struct ship *s;
    413 		struct ship *bestship = NULL;
    414 		float net, best = 0.0;
    415 		foreachship(s) {
    416 			if (*s->file->captain)
    417 				continue;
    418 			net = (float)s->file->points / s->specs->pts;
    419 			if (net > best) {
    420 				best = net;
    421 				bestship = s;
    422 			}
    423 		}
    424 		if (best > 0.0 && bestship) {
    425 			char *tp = getenv("WOTD");
    426 			const char *p;
    427 			if (tp == 0)
    428 				p = "Driver";
    429 			else {
    430 				*tp = toupper((unsigned char)*tp);
    431 				p = tp;
    432 			}
    433 			strlcpy(bestship->file->captain, p,
    434 				sizeof bestship->file->captain);
    435 			logger(bestship);
    436 		}
    437 		return -1;
    438 	}
    439 	send_turn(turn);
    440 	if (turn % 7 == 0 && (dieroll() >= cc->windchange || !windspeed)) {
    441 		switch (dieroll()) {
    442 		case 1:
    443 			winddir = 1;
    444 			break;
    445 		case 2:
    446 			break;
    447 		case 3:
    448 			winddir++;
    449 			break;
    450 		case 4:
    451 			winddir--;
    452 			break;
    453 		case 5:
    454 			winddir += 2;
    455 			break;
    456 		case 6:
    457 			winddir -= 2;
    458 			break;
    459 		}
    460 		if (winddir > 8)
    461 			winddir -= 8;
    462 		if (winddir < 1)
    463 			winddir += 8;
    464 		if (windspeed)
    465 			switch (dieroll()) {
    466 			case 1:
    467 			case 2:
    468 				windspeed--;
    469 				break;
    470 			case 5:
    471 			case 6:
    472 				windspeed++;
    473 				break;
    474 			}
    475 		else
    476 			windspeed++;
    477 		send_wind( winddir, windspeed);
    478 	}
    479 	return 0;
    480 }
    481