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dr_1.c revision 1.17
      1 /*	$NetBSD: dr_1.c,v 1.17 2001/01/04 06:16:51 jwise 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 1.17 2001/01/04 06:16:51 jwise 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 void	unfoul(void);
     53 void	boardcomp(void);
     54 static int	fightitout(struct ship *, struct ship *, int);
     55 void	resolve(void);
     56 void	compcombat(void);
     57 int	next(void);
     58 
     59 void
     60 unfoul(void)
     61 {
     62 	struct ship *sp;
     63 	struct ship *to;
     64 	int nat;
     65 	int i;
     66 
     67 	foreachship(sp) {
     68 		if (sp->file->captain[0])
     69 			continue;
     70 		nat = capship(sp)->nationality;
     71 		foreachship(to) {
     72 			if (nat != capship(to)->nationality &&
     73 			    !is_toughmelee(sp, to, 0, 0))
     74 				continue;
     75 			for (i = fouled2(sp, to); --i >= 0;)
     76 				if (dieroll() <= 2)
     77 					cleanfoul(sp, to, 0);
     78 		}
     79 	}
     80 }
     81 
     82 void
     83 boardcomp(void)
     84 {
     85 	int crew[3];
     86 	struct ship *sp, *sq;
     87 
     88 	foreachship(sp) {
     89 		if (*sp->file->captain)
     90 			continue;
     91 		if (sp->file->dir == 0)
     92 			continue;
     93 		if (sp->file->struck || sp->file->captured != 0)
     94 			continue;
     95 		if (!snagged(sp))
     96 			continue;
     97 		crew[0] = sp->specs->crew1 != 0;
     98 		crew[1] = sp->specs->crew2 != 0;
     99 		crew[2] = sp->specs->crew3 != 0;
    100 		foreachship(sq) {
    101 			if (!Xsnagged2(sp, sq))
    102 				continue;
    103 			if (meleeing(sp, sq))
    104 				continue;
    105 			if (!sq->file->dir
    106 				|| sp->nationality == capship(sq)->nationality)
    107 				continue;
    108 			switch (sp->specs->class - sq->specs->class) {
    109 			case -3: case -4: case -5:
    110 				if (crew[0]) {
    111 					/* OBP */
    112 					sendbp(sp, sq, crew[0]*100, 0);
    113 					crew[0] = 0;
    114 				} else if (crew[1]){
    115 					/* OBP */
    116 					sendbp(sp, sq, crew[1]*10, 0);
    117 					crew[1] = 0;
    118 				}
    119 				break;
    120 			case -2:
    121 				if (crew[0] || crew[1]) {
    122 					/* OBP */
    123 					sendbp(sp, sq, crew[0]*100+crew[1]*10,
    124 						0);
    125 					crew[0] = crew[1] = 0;
    126 				}
    127 				break;
    128 			case -1: case 0: case 1:
    129 				if (crew[0]) {
    130 					/* OBP */
    131 					sendbp(sp, sq, crew[0]*100+crew[1]*10,
    132 						0);
    133 					crew[0] = crew[1] = 0;
    134 				}
    135 				break;
    136 			case 2: case 3: case 4: case 5:
    137 				/* OBP */
    138 				sendbp(sp, sq, crew[0]*100+crew[1]*10+crew[2],
    139 					0);
    140 				crew[0] = crew[1] = crew[2] = 0;
    141 				break;
    142 			}
    143 		}
    144 	}
    145 }
    146 
    147 static int
    148 fightitout(struct ship *from, struct ship *to, int key)
    149 {
    150 	struct ship *fromcap, *tocap;
    151 	int crewfrom[3], crewto[3], menfrom, mento;
    152 	int pcto, pcfrom, fromstrength, strengthto, frominjured, toinjured;
    153 	int topoints;
    154 	int index, totalfrom = 0, totalto = 0;
    155 	int count;
    156 	char message[60];
    157 
    158 	menfrom = mensent(from, to, crewfrom, &fromcap, &pcfrom, key);
    159 	mento = mensent(to, from, crewto, &tocap, &pcto, 0);
    160 	if (fromcap == 0)
    161 		fromcap = from;
    162 	if (tocap == 0)
    163 		tocap = to;
    164 	if (key) {
    165 		if (!menfrom) {		 /* if crew surprised */
    166 			if (fromcap == from)
    167 				menfrom = from->specs->crew1
    168 					+ from->specs->crew2
    169 					+ from->specs->crew3;
    170 			else
    171 				menfrom = from->file->pcrew;
    172 		} else {
    173 			menfrom *= 2;	/* DBP's fight at an advantage */
    174 		}
    175 	}
    176 	fromstrength = menfrom * fromcap->specs->qual;
    177 	strengthto = mento * tocap->specs->qual;
    178 	for (count = 0;
    179 	     ((fromstrength < strengthto * 3 && strengthto < fromstrength * 3)
    180 	      || fromstrength == -1) && count < 4;
    181 	     count++) {
    182 		index = fromstrength/10;
    183 		if (index > 8)
    184 			index = 8;
    185 		toinjured = MT[index][2 - dieroll() / 3];
    186 		totalto += toinjured;
    187 		index = strengthto/10;
    188 		if (index > 8)
    189 			index = 8;
    190 		frominjured = MT[index][2 - dieroll() / 3];
    191 		totalfrom += frominjured;
    192 		menfrom -= frominjured;
    193 		mento -= toinjured;
    194 		fromstrength = menfrom * fromcap->specs->qual;
    195 		strengthto = mento * tocap->specs->qual;
    196 	}
    197 	if (fromstrength >= strengthto * 3 || count == 4) {
    198 		unboard(to, from, 0);
    199 		subtract(from, fromcap, totalfrom, crewfrom, pcfrom);
    200 		subtract(to, tocap, totalto, crewto, pcto);
    201 		makemsg(from, "boarders from %s repelled", to->shipname);
    202 		sprintf(message, "killed in melee: %d.  %s: %d",
    203 			totalto, from->shipname, totalfrom);
    204 		Writestr(W_SIGNAL, to, message);
    205 		if (key)
    206 			return 1;
    207 	} else if (strengthto >= fromstrength * 3) {
    208 		unboard(from, to, 0);
    209 		subtract(from, fromcap, totalfrom, crewfrom, pcfrom);
    210 		subtract(to, tocap, totalto, crewto, pcto);
    211 		if (key) {
    212 			if (fromcap != from)
    213 				Write(W_POINTS, fromcap,
    214 					fromcap->file->points -
    215 						from->file->struck
    216 						? from->specs->pts
    217 						: 2 * from->specs->pts,
    218 					0, 0, 0);
    219 
    220 /* ptr1 points to the shipspec for the ship that was just unboarded.
    221    I guess that what is going on here is that the pointer is multiplied
    222    or something. */
    223 
    224 			Write(W_CAPTURED, from, to->file->index, 0, 0, 0);
    225 			topoints = 2 * from->specs->pts + to->file->points;
    226 			if (from->file->struck)
    227 				topoints -= from->specs->pts;
    228 			Write(W_POINTS, to, topoints, 0, 0, 0);
    229 			mento = crewto[0] ? crewto[0] : crewto[1];
    230 			if (mento) {
    231 				subtract(to, tocap, mento, crewto, pcto);
    232 				subtract(from, to, - mento, crewfrom, 0);
    233 			}
    234 			sprintf(message, "captured by the %s!", to->shipname);
    235 			Writestr(W_SIGNAL, from, message);
    236 			sprintf(message, "killed in melee: %d.  %s: %d",
    237 				totalto, from->shipname, totalfrom);
    238 			Writestr(W_SIGNAL, to, message);
    239 			mento = 0;
    240 			return 0;
    241 		}
    242 	}
    243 	return 0;
    244 }
    245 
    246 void
    247 resolve(void)
    248 {
    249 	int thwart;
    250 	struct ship *sp, *sq;
    251 
    252 	foreachship(sp) {
    253 		if (sp->file->dir == 0)
    254 			continue;
    255 		for (sq = sp + 1; sq < ls; sq++)
    256 			if (sq->file->dir && meleeing(sp, sq) && meleeing(sq, sp))
    257 				fightitout(sp, sq, 0);
    258 		thwart = 2;
    259 		foreachship(sq) {
    260 			if (sq->file->dir && meleeing(sq, sp))
    261 				thwart = fightitout(sp, sq, 1);
    262 			if (!thwart)
    263 				break;
    264 		}
    265 		if (!thwart) {
    266 			foreachship(sq) {
    267 				if (sq->file->dir && meleeing(sq, sp))
    268 					unboard(sq, sp, 0);
    269 				unboard(sp, sq, 0);
    270 			}
    271 			unboard(sp, sp, 1);
    272 		} else if (thwart == 2)
    273 			unboard(sp, sp, 1);
    274 	}
    275 }
    276 
    277 void
    278 compcombat(void)
    279 {
    280 	int n;
    281 	struct ship *sp;
    282 	struct ship *closest;
    283 	int crew[3], men = 0, target, temp;
    284 	int r, guns, ready, load, car;
    285 	int index, rakehim, sternrake;
    286 	int shootat, hit;
    287 
    288 	foreachship(sp) {
    289 		if (sp->file->captain[0] || sp->file->dir == 0)
    290 			continue;
    291 		crew[0] = sp->specs->crew1;
    292 		crew[1] = sp->specs->crew2;
    293 		crew[2] = sp->specs->crew3;
    294 		for (n = 0; n < 3; n++) {
    295 			if (sp->file->OBP[n].turnsent)
    296 				men += sp->file->OBP[n].mensent;
    297 		}
    298 		for (n = 0; n < 3; n++) {
    299 			if (sp->file->DBP[n].turnsent)
    300 				men += sp->file->DBP[n].mensent;
    301 		}
    302 		if (men){
    303 			crew[0] = men/100 ? 0 : crew[0] != 0;
    304 			crew[1] = (men%100)/10 ? 0 : crew[1] != 0;
    305 			crew[2] = men%10 ? 0 : crew[2] != 0;
    306 		}
    307 		for (r = 0; r < 2; r++) {
    308 			if (!crew[2])
    309 				continue;
    310 			if (sp->file->struck)
    311 				continue;
    312 			if (r) {
    313 				ready = sp->file->readyR;
    314 				guns = sp->specs->gunR;
    315 				car = sp->specs->carR;
    316 			} else {
    317 				ready = sp->file->readyL;
    318 				guns = sp->specs->gunL;
    319 				car = sp->specs->carL;
    320 			}
    321 			if (!guns && !car)
    322 				continue;
    323 			if ((ready & R_LOADED) == 0)
    324 				continue;
    325 			closest = closestenemy(sp, r ? 'r' : 'l', 0);
    326 			if (closest == 0)
    327 				continue;
    328 			if (range(closest, sp) > range(sp, closestenemy(sp, r ? 'r' : 'l', 1)))
    329 				continue;
    330 			if (closest->file->struck)
    331 				continue;
    332 			target = range(sp, closest);
    333 			if (target > 10)
    334 				continue;
    335 			if (!guns && target >= 3)
    336 				continue;
    337 			load = L_ROUND;
    338 			if (target == 1 && sp->file->loadwith == L_GRAPE)
    339 				load = L_GRAPE;
    340 			if (target <= 3 && closest->file->FS)
    341 				load = L_CHAIN;
    342 			if (target == 1 && load != L_GRAPE)
    343 				load = L_DOUBLE;
    344 			if (load > L_CHAIN && target < 6)
    345 				shootat = HULL;
    346 			else
    347 				shootat = RIGGING;
    348 			rakehim = gunsbear(sp, closest)
    349 				&& !gunsbear(closest, sp);
    350 			temp = portside(closest, sp, 1)
    351 				- closest->file->dir + 1;
    352 			if (temp < 1)
    353 				temp += 8;
    354 			if (temp > 8)
    355 				temp -= 8;
    356 			sternrake = temp > 4 && temp < 6;
    357 			index = guns;
    358 			if (target < 3)
    359 				index += car;
    360 			index = (index - 1) / 3;
    361 			index = index > 8 ? 8 : index;
    362 			if (!rakehim)
    363 				hit = HDT[index][target-1];
    364 			else
    365 				hit = HDTrake[index][target-1];
    366 			if (rakehim && sternrake)
    367 				hit++;
    368 			hit += QUAL[index][capship(sp)->specs->qual - 1];
    369 			for (n = 0; n < 3 && sp->file->captured == 0; n++)
    370 				if (!crew[n]) {
    371 					if (index <= 5)
    372 						hit--;
    373 					else
    374 						hit -= 2;
    375 				}
    376 			if (ready & R_INITIAL) {
    377 				if (!r)
    378 					sp->file->readyL &= ~R_INITIAL;
    379 				else
    380 					sp->file->readyR &= ~R_INITIAL;
    381 				if (index <= 3)
    382 					hit++;
    383 				else
    384 					hit += 2;
    385 			}
    386 			if (sp->file->captured != 0) {
    387 				if (index <= 1)
    388 					hit--;
    389 				else
    390 					hit -= 2;
    391 			}
    392 			hit += AMMO[index][load - 1];
    393 			temp = sp->specs->class;
    394 			if ((temp >= 5 || temp == 1) && windspeed == 5)
    395 				hit--;
    396 			if (windspeed == 6 && temp == 4)
    397 				hit -= 2;
    398 			if (windspeed == 6 && temp <= 3)
    399 				hit--;
    400 			if (hit >= 0) {
    401 				if (load != L_GRAPE)
    402 					hit = hit > 10 ? 10 : hit;
    403 				table(sp, closest, shootat, load, hit, dieroll());
    404 			}
    405 		}
    406 	}
    407 }
    408 
    409 int
    410 next(void)
    411 {
    412 	if (++turn % 55 == 0) {
    413 		if (alive)
    414 			alive = 0;
    415 		else
    416 			people = 0;
    417 	}
    418 	if (people <= 0 || windspeed == 7) {
    419 		struct ship *s;
    420 		struct ship *bestship = NULL;
    421 		float net, best = 0.0;
    422 		foreachship(s) {
    423 			if (*s->file->captain)
    424 				continue;
    425 			net = (float)s->file->points / s->specs->pts;
    426 			if (net > best) {
    427 				best = net;
    428 				bestship = s;
    429 			}
    430 		}
    431 		if (best > 0.0) {
    432 			char *tp = getenv("WOTD");
    433 			const char *p;
    434 			if (tp == 0)
    435 				p = "Driver";
    436 			else {
    437 				if (islower(*tp))
    438 					*tp = toupper(*tp);
    439 				p = tp;
    440 			}
    441 			strncpy(bestship->file->captain, p,
    442 				sizeof bestship->file->captain);
    443 			bestship->file->captain
    444 				[sizeof bestship->file->captain - 1] = 0;
    445 			logger(bestship);
    446 		}
    447 		return -1;
    448 	}
    449 	Write(W_TURN, SHIP(0), turn, 0, 0, 0);
    450 	if (turn % 7 == 0 && (dieroll() >= cc->windchange || !windspeed)) {
    451 		switch (dieroll()) {
    452 		case 1:
    453 			winddir = 1;
    454 			break;
    455 		case 2:
    456 			break;
    457 		case 3:
    458 			winddir++;
    459 			break;
    460 		case 4:
    461 			winddir--;
    462 			break;
    463 		case 5:
    464 			winddir += 2;
    465 			break;
    466 		case 6:
    467 			winddir -= 2;
    468 			break;
    469 		}
    470 		if (winddir > 8)
    471 			winddir -= 8;
    472 		if (winddir < 1)
    473 			winddir += 8;
    474 		if (windspeed)
    475 			switch (dieroll()) {
    476 			case 1:
    477 			case 2:
    478 				windspeed--;
    479 				break;
    480 			case 5:
    481 			case 6:
    482 				windspeed++;
    483 				break;
    484 			}
    485 		else
    486 			windspeed++;
    487 		Write(W_WIND, SHIP(0), winddir, windspeed, 0, 0);
    488 	}
    489 	return 0;
    490 }
    491