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dr_1.c revision 1.18
      1 /*	$NetBSD: dr_1.c,v 1.18 2001/02/05 01:10:08 christos 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)dr_1.c	8.1 (Berkeley) 5/31/93";
     40 #else
     41 __RCSID("$NetBSD: dr_1.c,v 1.18 2001/02/05 01:10:08 christos Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 #include <ctype.h>
     46 #include <stdio.h>
     47 #include <stdlib.h>
     48 #include <string.h>
     49 #include "extern.h"
     50 #include "driver.h"
     51 
     52 static int	fightitout(struct ship *, struct ship *, int);
     53 
     54 void
     55 unfoul(void)
     56 {
     57 	struct ship *sp;
     58 	struct ship *to;
     59 	int nat;
     60 	int i;
     61 
     62 	foreachship(sp) {
     63 		if (sp->file->captain[0])
     64 			continue;
     65 		nat = capship(sp)->nationality;
     66 		foreachship(to) {
     67 			if (nat != capship(to)->nationality &&
     68 			    !is_toughmelee(sp, to, 0, 0))
     69 				continue;
     70 			for (i = fouled2(sp, to); --i >= 0;)
     71 				if (dieroll() <= 2)
     72 					cleanfoul(sp, to, 0);
     73 		}
     74 	}
     75 }
     76 
     77 void
     78 boardcomp(void)
     79 {
     80 	int crew[3];
     81 	struct ship *sp, *sq;
     82 
     83 	foreachship(sp) {
     84 		if (*sp->file->captain)
     85 			continue;
     86 		if (sp->file->dir == 0)
     87 			continue;
     88 		if (sp->file->struck || sp->file->captured != 0)
     89 			continue;
     90 		if (!snagged(sp))
     91 			continue;
     92 		crew[0] = sp->specs->crew1 != 0;
     93 		crew[1] = sp->specs->crew2 != 0;
     94 		crew[2] = sp->specs->crew3 != 0;
     95 		foreachship(sq) {
     96 			if (!Xsnagged2(sp, sq))
     97 				continue;
     98 			if (meleeing(sp, sq))
     99 				continue;
    100 			if (!sq->file->dir
    101 				|| sp->nationality == capship(sq)->nationality)
    102 				continue;
    103 			switch (sp->specs->class - sq->specs->class) {
    104 			case -3: case -4: case -5:
    105 				if (crew[0]) {
    106 					/* OBP */
    107 					sendbp(sp, sq, crew[0]*100, 0);
    108 					crew[0] = 0;
    109 				} else if (crew[1]){
    110 					/* OBP */
    111 					sendbp(sp, sq, crew[1]*10, 0);
    112 					crew[1] = 0;
    113 				}
    114 				break;
    115 			case -2:
    116 				if (crew[0] || crew[1]) {
    117 					/* OBP */
    118 					sendbp(sp, sq, crew[0]*100+crew[1]*10,
    119 						0);
    120 					crew[0] = crew[1] = 0;
    121 				}
    122 				break;
    123 			case -1: case 0: case 1:
    124 				if (crew[0]) {
    125 					/* OBP */
    126 					sendbp(sp, sq, crew[0]*100+crew[1]*10,
    127 						0);
    128 					crew[0] = crew[1] = 0;
    129 				}
    130 				break;
    131 			case 2: case 3: case 4: case 5:
    132 				/* OBP */
    133 				sendbp(sp, sq, crew[0]*100+crew[1]*10+crew[2],
    134 					0);
    135 				crew[0] = crew[1] = crew[2] = 0;
    136 				break;
    137 			}
    138 		}
    139 	}
    140 }
    141 
    142 static int
    143 fightitout(struct ship *from, struct ship *to, int key)
    144 {
    145 	struct ship *fromcap, *tocap;
    146 	int crewfrom[3], crewto[3], menfrom, mento;
    147 	int pcto, pcfrom, fromstrength, strengthto, frominjured, toinjured;
    148 	int topoints;
    149 	int index, totalfrom = 0, totalto = 0;
    150 	int count;
    151 	char message[60];
    152 
    153 	menfrom = mensent(from, to, crewfrom, &fromcap, &pcfrom, key);
    154 	mento = mensent(to, from, crewto, &tocap, &pcto, 0);
    155 	if (fromcap == 0)
    156 		fromcap = from;
    157 	if (tocap == 0)
    158 		tocap = to;
    159 	if (key) {
    160 		if (!menfrom) {		 /* if crew surprised */
    161 			if (fromcap == from)
    162 				menfrom = from->specs->crew1
    163 					+ from->specs->crew2
    164 					+ from->specs->crew3;
    165 			else
    166 				menfrom = from->file->pcrew;
    167 		} else {
    168 			menfrom *= 2;	/* DBP's fight at an advantage */
    169 		}
    170 	}
    171 	fromstrength = menfrom * fromcap->specs->qual;
    172 	strengthto = mento * tocap->specs->qual;
    173 	for (count = 0;
    174 	     ((fromstrength < strengthto * 3 && strengthto < fromstrength * 3)
    175 	      || fromstrength == -1) && count < 4;
    176 	     count++) {
    177 		index = fromstrength/10;
    178 		if (index > 8)
    179 			index = 8;
    180 		toinjured = MT[index][2 - dieroll() / 3];
    181 		totalto += toinjured;
    182 		index = strengthto/10;
    183 		if (index > 8)
    184 			index = 8;
    185 		frominjured = MT[index][2 - dieroll() / 3];
    186 		totalfrom += frominjured;
    187 		menfrom -= frominjured;
    188 		mento -= toinjured;
    189 		fromstrength = menfrom * fromcap->specs->qual;
    190 		strengthto = mento * tocap->specs->qual;
    191 	}
    192 	if (fromstrength >= strengthto * 3 || count == 4) {
    193 		unboard(to, from, 0);
    194 		subtract(from, fromcap, totalfrom, crewfrom, pcfrom);
    195 		subtract(to, tocap, totalto, crewto, pcto);
    196 		makemsg(from, "boarders from %s repelled", to->shipname);
    197 		sprintf(message, "killed in melee: %d.  %s: %d",
    198 			totalto, from->shipname, totalfrom);
    199 		Writestr(W_SIGNAL, to, message);
    200 		if (key)
    201 			return 1;
    202 	} else if (strengthto >= fromstrength * 3) {
    203 		unboard(from, to, 0);
    204 		subtract(from, fromcap, totalfrom, crewfrom, pcfrom);
    205 		subtract(to, tocap, totalto, crewto, pcto);
    206 		if (key) {
    207 			if (fromcap != from)
    208 				Write(W_POINTS, fromcap,
    209 					fromcap->file->points -
    210 						from->file->struck
    211 						? from->specs->pts
    212 						: 2 * from->specs->pts,
    213 					0, 0, 0);
    214 
    215 /* ptr1 points to the shipspec for the ship that was just unboarded.
    216    I guess that what is going on here is that the pointer is multiplied
    217    or something. */
    218 
    219 			Write(W_CAPTURED, from, to->file->index, 0, 0, 0);
    220 			topoints = 2 * from->specs->pts + to->file->points;
    221 			if (from->file->struck)
    222 				topoints -= from->specs->pts;
    223 			Write(W_POINTS, to, topoints, 0, 0, 0);
    224 			mento = crewto[0] ? crewto[0] : crewto[1];
    225 			if (mento) {
    226 				subtract(to, tocap, mento, crewto, pcto);
    227 				subtract(from, to, - mento, crewfrom, 0);
    228 			}
    229 			sprintf(message, "captured by the %s!", to->shipname);
    230 			Writestr(W_SIGNAL, from, message);
    231 			sprintf(message, "killed in melee: %d.  %s: %d",
    232 				totalto, from->shipname, totalfrom);
    233 			Writestr(W_SIGNAL, to, message);
    234 			mento = 0;
    235 			return 0;
    236 		}
    237 	}
    238 	return 0;
    239 }
    240 
    241 void
    242 resolve(void)
    243 {
    244 	int thwart;
    245 	struct ship *sp, *sq;
    246 
    247 	foreachship(sp) {
    248 		if (sp->file->dir == 0)
    249 			continue;
    250 		for (sq = sp + 1; sq < ls; sq++)
    251 			if (sq->file->dir && meleeing(sp, sq) && meleeing(sq, sp))
    252 				fightitout(sp, sq, 0);
    253 		thwart = 2;
    254 		foreachship(sq) {
    255 			if (sq->file->dir && meleeing(sq, sp))
    256 				thwart = fightitout(sp, sq, 1);
    257 			if (!thwart)
    258 				break;
    259 		}
    260 		if (!thwart) {
    261 			foreachship(sq) {
    262 				if (sq->file->dir && meleeing(sq, sp))
    263 					unboard(sq, sp, 0);
    264 				unboard(sp, sq, 0);
    265 			}
    266 			unboard(sp, sp, 1);
    267 		} else if (thwart == 2)
    268 			unboard(sp, sp, 1);
    269 	}
    270 }
    271 
    272 void
    273 compcombat(void)
    274 {
    275 	int n;
    276 	struct ship *sp;
    277 	struct ship *closest;
    278 	int crew[3], men = 0, target, temp;
    279 	int r, guns, ready, load, car;
    280 	int index, rakehim, sternrake;
    281 	int shootat, hit;
    282 
    283 	foreachship(sp) {
    284 		if (sp->file->captain[0] || sp->file->dir == 0)
    285 			continue;
    286 		crew[0] = sp->specs->crew1;
    287 		crew[1] = sp->specs->crew2;
    288 		crew[2] = sp->specs->crew3;
    289 		for (n = 0; n < 3; n++) {
    290 			if (sp->file->OBP[n].turnsent)
    291 				men += sp->file->OBP[n].mensent;
    292 		}
    293 		for (n = 0; n < 3; n++) {
    294 			if (sp->file->DBP[n].turnsent)
    295 				men += sp->file->DBP[n].mensent;
    296 		}
    297 		if (men){
    298 			crew[0] = men/100 ? 0 : crew[0] != 0;
    299 			crew[1] = (men%100)/10 ? 0 : crew[1] != 0;
    300 			crew[2] = men%10 ? 0 : crew[2] != 0;
    301 		}
    302 		for (r = 0; r < 2; r++) {
    303 			if (!crew[2])
    304 				continue;
    305 			if (sp->file->struck)
    306 				continue;
    307 			if (r) {
    308 				ready = sp->file->readyR;
    309 				guns = sp->specs->gunR;
    310 				car = sp->specs->carR;
    311 			} else {
    312 				ready = sp->file->readyL;
    313 				guns = sp->specs->gunL;
    314 				car = sp->specs->carL;
    315 			}
    316 			if (!guns && !car)
    317 				continue;
    318 			if ((ready & R_LOADED) == 0)
    319 				continue;
    320 			closest = closestenemy(sp, r ? 'r' : 'l', 0);
    321 			if (closest == 0)
    322 				continue;
    323 			if (range(closest, sp) > range(sp, closestenemy(sp, r ? 'r' : 'l', 1)))
    324 				continue;
    325 			if (closest->file->struck)
    326 				continue;
    327 			target = range(sp, closest);
    328 			if (target > 10)
    329 				continue;
    330 			if (!guns && target >= 3)
    331 				continue;
    332 			load = L_ROUND;
    333 			if (target == 1 && sp->file->loadwith == L_GRAPE)
    334 				load = L_GRAPE;
    335 			if (target <= 3 && closest->file->FS)
    336 				load = L_CHAIN;
    337 			if (target == 1 && load != L_GRAPE)
    338 				load = L_DOUBLE;
    339 			if (load > L_CHAIN && target < 6)
    340 				shootat = HULL;
    341 			else
    342 				shootat = RIGGING;
    343 			rakehim = gunsbear(sp, closest)
    344 				&& !gunsbear(closest, sp);
    345 			temp = portside(closest, sp, 1)
    346 				- closest->file->dir + 1;
    347 			if (temp < 1)
    348 				temp += 8;
    349 			if (temp > 8)
    350 				temp -= 8;
    351 			sternrake = temp > 4 && temp < 6;
    352 			index = guns;
    353 			if (target < 3)
    354 				index += car;
    355 			index = (index - 1) / 3;
    356 			index = index > 8 ? 8 : index;
    357 			if (!rakehim)
    358 				hit = HDT[index][target-1];
    359 			else
    360 				hit = HDTrake[index][target-1];
    361 			if (rakehim && sternrake)
    362 				hit++;
    363 			hit += QUAL[index][capship(sp)->specs->qual - 1];
    364 			for (n = 0; n < 3 && sp->file->captured == 0; n++)
    365 				if (!crew[n]) {
    366 					if (index <= 5)
    367 						hit--;
    368 					else
    369 						hit -= 2;
    370 				}
    371 			if (ready & R_INITIAL) {
    372 				if (!r)
    373 					sp->file->readyL &= ~R_INITIAL;
    374 				else
    375 					sp->file->readyR &= ~R_INITIAL;
    376 				if (index <= 3)
    377 					hit++;
    378 				else
    379 					hit += 2;
    380 			}
    381 			if (sp->file->captured != 0) {
    382 				if (index <= 1)
    383 					hit--;
    384 				else
    385 					hit -= 2;
    386 			}
    387 			hit += AMMO[index][load - 1];
    388 			temp = sp->specs->class;
    389 			if ((temp >= 5 || temp == 1) && windspeed == 5)
    390 				hit--;
    391 			if (windspeed == 6 && temp == 4)
    392 				hit -= 2;
    393 			if (windspeed == 6 && temp <= 3)
    394 				hit--;
    395 			if (hit >= 0) {
    396 				if (load != L_GRAPE)
    397 					hit = hit > 10 ? 10 : hit;
    398 				table(sp, closest, shootat, load, hit, dieroll());
    399 			}
    400 		}
    401 	}
    402 }
    403 
    404 int
    405 next(void)
    406 {
    407 	if (++turn % 55 == 0) {
    408 		if (alive)
    409 			alive = 0;
    410 		else
    411 			people = 0;
    412 	}
    413 	if (people <= 0 || windspeed == 7) {
    414 		struct ship *s;
    415 		struct ship *bestship = NULL;
    416 		float net, best = 0.0;
    417 		foreachship(s) {
    418 			if (*s->file->captain)
    419 				continue;
    420 			net = (float)s->file->points / s->specs->pts;
    421 			if (net > best) {
    422 				best = net;
    423 				bestship = s;
    424 			}
    425 		}
    426 		if (best > 0.0) {
    427 			char *tp = getenv("WOTD");
    428 			const char *p;
    429 			if (tp == 0)
    430 				p = "Driver";
    431 			else {
    432 				if (islower(*tp))
    433 					*tp = toupper(*tp);
    434 				p = tp;
    435 			}
    436 			strncpy(bestship->file->captain, p,
    437 				sizeof bestship->file->captain);
    438 			bestship->file->captain
    439 				[sizeof bestship->file->captain - 1] = 0;
    440 			logger(bestship);
    441 		}
    442 		return -1;
    443 	}
    444 	Write(W_TURN, SHIP(0), turn, 0, 0, 0);
    445 	if (turn % 7 == 0 && (dieroll() >= cc->windchange || !windspeed)) {
    446 		switch (dieroll()) {
    447 		case 1:
    448 			winddir = 1;
    449 			break;
    450 		case 2:
    451 			break;
    452 		case 3:
    453 			winddir++;
    454 			break;
    455 		case 4:
    456 			winddir--;
    457 			break;
    458 		case 5:
    459 			winddir += 2;
    460 			break;
    461 		case 6:
    462 			winddir -= 2;
    463 			break;
    464 		}
    465 		if (winddir > 8)
    466 			winddir -= 8;
    467 		if (winddir < 1)
    468 			winddir += 8;
    469 		if (windspeed)
    470 			switch (dieroll()) {
    471 			case 1:
    472 			case 2:
    473 				windspeed--;
    474 				break;
    475 			case 5:
    476 			case 6:
    477 				windspeed++;
    478 				break;
    479 			}
    480 		else
    481 			windspeed++;
    482 		Write(W_WIND, SHIP(0), winddir, windspeed, 0, 0);
    483 	}
    484 	return 0;
    485 }
    486