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dr_1.c revision 1.24
      1 /*	$NetBSD: dr_1.c,v 1.24 2009/03/09 04:38:39 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 1.24 2009/03/09 04:38:39 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 		Writestr(W_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 				Write(W_POINTS, fromcap,
    206 					fromcap->file->points -
    207 						from->file->struck
    208 						? from->specs->pts
    209 						: 2 * from->specs->pts,
    210 					0, 0, 0);
    211 
    212 /* ptr1 points to the shipspec for the ship that was just unboarded.
    213    I guess that what is going on here is that the pointer is multiplied
    214    or something. */
    215 
    216 			Write(W_CAPTURED, from, to->file->index, 0, 0, 0);
    217 			topoints = 2 * from->specs->pts + to->file->points;
    218 			if (from->file->struck)
    219 				topoints -= from->specs->pts;
    220 			Write(W_POINTS, to, topoints, 0, 0, 0);
    221 			mento = crewto[0] ? crewto[0] : crewto[1];
    222 			if (mento) {
    223 				subtract(to, tocap, mento, crewto, pcto);
    224 				subtract(from, to, - mento, crewfrom, 0);
    225 			}
    226 			snprintf(message, sizeof(message),
    227 				"captured by the %s!", to->shipname);
    228 			Writestr(W_SIGNAL, from, message);
    229 			snprintf(message, sizeof(message),
    230 				"killed in melee: %d.  %s: %d",
    231 				totalto, from->shipname, totalfrom);
    232 			Writestr(W_SIGNAL, to, message);
    233 			mento = 0;
    234 			return 0;
    235 		}
    236 	}
    237 	return 0;
    238 }
    239 
    240 void
    241 resolve(void)
    242 {
    243 	int thwart;
    244 	struct ship *sp, *sq;
    245 
    246 	foreachship(sp) {
    247 		if (sp->file->dir == 0)
    248 			continue;
    249 		for (sq = sp + 1; sq < ls; sq++)
    250 			if (sq->file->dir && meleeing(sp, sq) && meleeing(sq, sp))
    251 				fightitout(sp, sq, 0);
    252 		thwart = 2;
    253 		foreachship(sq) {
    254 			if (sq->file->dir && meleeing(sq, sp))
    255 				thwart = fightitout(sp, sq, 1);
    256 			if (!thwart)
    257 				break;
    258 		}
    259 		if (!thwart) {
    260 			foreachship(sq) {
    261 				if (sq->file->dir && meleeing(sq, sp))
    262 					unboard(sq, sp, 0);
    263 				unboard(sp, sq, 0);
    264 			}
    265 			unboard(sp, sp, 1);
    266 		} else if (thwart == 2)
    267 			unboard(sp, sp, 1);
    268 	}
    269 }
    270 
    271 void
    272 compcombat(void)
    273 {
    274 	int n;
    275 	struct ship *sp;
    276 	struct ship *closest;
    277 	int crew[3], men = 0, target, temp;
    278 	int r, guns, ready, load, car;
    279 	int indx, rakehim, sternrake;
    280 	int shootat, hit;
    281 
    282 	foreachship(sp) {
    283 		if (sp->file->captain[0] || sp->file->dir == 0)
    284 			continue;
    285 		crew[0] = sp->specs->crew1;
    286 		crew[1] = sp->specs->crew2;
    287 		crew[2] = sp->specs->crew3;
    288 		for (n = 0; n < 3; n++) {
    289 			if (sp->file->OBP[n].turnsent)
    290 				men += sp->file->OBP[n].mensent;
    291 		}
    292 		for (n = 0; n < 3; n++) {
    293 			if (sp->file->DBP[n].turnsent)
    294 				men += sp->file->DBP[n].mensent;
    295 		}
    296 		if (men){
    297 			crew[0] = men/100 ? 0 : crew[0] != 0;
    298 			crew[1] = (men%100)/10 ? 0 : crew[1] != 0;
    299 			crew[2] = men%10 ? 0 : crew[2] != 0;
    300 		}
    301 		for (r = 0; r < 2; r++) {
    302 			if (!crew[2])
    303 				continue;
    304 			if (sp->file->struck)
    305 				continue;
    306 			if (r) {
    307 				ready = sp->file->readyR;
    308 				guns = sp->specs->gunR;
    309 				car = sp->specs->carR;
    310 			} else {
    311 				ready = sp->file->readyL;
    312 				guns = sp->specs->gunL;
    313 				car = sp->specs->carL;
    314 			}
    315 			if (!guns && !car)
    316 				continue;
    317 			if ((ready & R_LOADED) == 0)
    318 				continue;
    319 			closest = closestenemy(sp, r ? 'r' : 'l', 0);
    320 			if (closest == 0)
    321 				continue;
    322 			if (range(closest, sp) > range(sp, closestenemy(sp, r ? 'r' : 'l', 1)))
    323 				continue;
    324 			if (closest->file->struck)
    325 				continue;
    326 			target = range(sp, closest);
    327 			if (target > 10)
    328 				continue;
    329 			if (!guns && target >= 3)
    330 				continue;
    331 			load = L_ROUND;
    332 			if (target == 1 && sp->file->loadwith == L_GRAPE)
    333 				load = L_GRAPE;
    334 			if (target <= 3 && closest->file->FS)
    335 				load = L_CHAIN;
    336 			if (target == 1 && load != L_GRAPE)
    337 				load = L_DOUBLE;
    338 			if (load > L_CHAIN && target < 6)
    339 				shootat = HULL;
    340 			else
    341 				shootat = RIGGING;
    342 			rakehim = gunsbear(sp, closest)
    343 				&& !gunsbear(closest, sp);
    344 			temp = portside(closest, sp, 1)
    345 				- closest->file->dir + 1;
    346 			if (temp < 1)
    347 				temp += 8;
    348 			if (temp > 8)
    349 				temp -= 8;
    350 			sternrake = temp > 4 && temp < 6;
    351 			indx = guns;
    352 			if (target < 3)
    353 				indx += car;
    354 			indx = (indx - 1) / 3;
    355 			indx = indx > 8 ? 8 : indx;
    356 			if (!rakehim)
    357 				hit = HDT[indx][target-1];
    358 			else
    359 				hit = HDTrake[indx][target-1];
    360 			if (rakehim && sternrake)
    361 				hit++;
    362 			hit += QUAL[indx][capship(sp)->specs->qual - 1];
    363 			for (n = 0; n < 3 && sp->file->captured == 0; n++)
    364 				if (!crew[n]) {
    365 					if (indx <= 5)
    366 						hit--;
    367 					else
    368 						hit -= 2;
    369 				}
    370 			if (ready & R_INITIAL) {
    371 				if (!r)
    372 					sp->file->readyL &= ~R_INITIAL;
    373 				else
    374 					sp->file->readyR &= ~R_INITIAL;
    375 				if (indx <= 3)
    376 					hit++;
    377 				else
    378 					hit += 2;
    379 			}
    380 			if (sp->file->captured != 0) {
    381 				if (indx <= 1)
    382 					hit--;
    383 				else
    384 					hit -= 2;
    385 			}
    386 			hit += AMMO[indx][load - 1];
    387 			temp = sp->specs->class;
    388 			if ((temp >= 5 || temp == 1) && windspeed == 5)
    389 				hit--;
    390 			if (windspeed == 6 && temp == 4)
    391 				hit -= 2;
    392 			if (windspeed == 6 && temp <= 3)
    393 				hit--;
    394 			if (hit >= 0) {
    395 				if (load != L_GRAPE)
    396 					hit = hit > 10 ? 10 : hit;
    397 				table(sp, closest, shootat, load, hit, dieroll());
    398 			}
    399 		}
    400 	}
    401 }
    402 
    403 int
    404 next(void)
    405 {
    406 	if (++turn % 55 == 0) {
    407 		if (alive)
    408 			alive = 0;
    409 		else
    410 			people = 0;
    411 	}
    412 	if (people <= 0 || windspeed == 7) {
    413 		struct ship *s;
    414 		struct ship *bestship = NULL;
    415 		float net, best = 0.0;
    416 		foreachship(s) {
    417 			if (*s->file->captain)
    418 				continue;
    419 			net = (float)s->file->points / s->specs->pts;
    420 			if (net > best) {
    421 				best = net;
    422 				bestship = s;
    423 			}
    424 		}
    425 		if (best > 0.0 && bestship) {
    426 			char *tp = getenv("WOTD");
    427 			const char *p;
    428 			if (tp == 0)
    429 				p = "Driver";
    430 			else {
    431 				*tp = toupper((unsigned char)*tp);
    432 				p = tp;
    433 			}
    434 			strlcpy(bestship->file->captain, p,
    435 				sizeof bestship->file->captain);
    436 			logger(bestship);
    437 		}
    438 		return -1;
    439 	}
    440 	Write(W_TURN, SHIP(0), turn, 0, 0, 0);
    441 	if (turn % 7 == 0 && (dieroll() >= cc->windchange || !windspeed)) {
    442 		switch (dieroll()) {
    443 		case 1:
    444 			winddir = 1;
    445 			break;
    446 		case 2:
    447 			break;
    448 		case 3:
    449 			winddir++;
    450 			break;
    451 		case 4:
    452 			winddir--;
    453 			break;
    454 		case 5:
    455 			winddir += 2;
    456 			break;
    457 		case 6:
    458 			winddir -= 2;
    459 			break;
    460 		}
    461 		if (winddir > 8)
    462 			winddir -= 8;
    463 		if (winddir < 1)
    464 			winddir += 8;
    465 		if (windspeed)
    466 			switch (dieroll()) {
    467 			case 1:
    468 			case 2:
    469 				windspeed--;
    470 				break;
    471 			case 5:
    472 			case 6:
    473 				windspeed++;
    474 				break;
    475 			}
    476 		else
    477 			windspeed++;
    478 		Write(W_WIND, SHIP(0), winddir, windspeed, 0, 0);
    479 	}
    480 	return 0;
    481 }
    482