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extern.h revision 1.14
      1 /*	$NetBSD: extern.h,v 1.14 2000/02/09 22:27:55 jsm 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  *	@(#)externs.h	8.1 (Berkeley) 5/31/93
     36  */
     37 
     38 #include <stdio.h>
     39 #include <signal.h>
     40 #include <string.h>
     41 #include <ctype.h>
     42 #include <setjmp.h>
     43 #include <sys/types.h>
     44 #include "machdep.h"
     45 
     46 	/* program mode */
     47 extern int mode;
     48 extern jmp_buf restart;
     49 #define MODE_PLAYER	1
     50 #define MODE_DRIVER	2
     51 #define MODE_LOGGER	3
     52 
     53 	/* command line flags */
     54 extern char debug;			/* -D */
     55 extern char randomize;			/* -x, give first available ship */
     56 extern char longfmt;			/* -l, print score in long format */
     57 extern char nobells;			/* -b, don't ring bell before Signal */
     58 
     59 	/* other initial modes */
     60 extern gid_t gid;
     61 extern gid_t egid;
     62 
     63 #define die()		((rand() >> 3) % 6 + 1)
     64 #define sqr(a)		((a) * (a))
     65 #define abs(a)		((a) > 0 ? (a) : -(a))
     66 #define min(a,b)	((a) < (b) ? (a) : (b))
     67 
     68 #define grappled(a)	((a)->file->ngrap)
     69 #define fouled(a)	((a)->file->nfoul)
     70 #define snagged(a)	(grappled(a) + fouled(a))
     71 
     72 #define grappled2(a, b)	((a)->file->grap[(b)->file->index].sn_count)
     73 #define fouled2(a, b)	((a)->file->foul[(b)->file->index].sn_count)
     74 #define snagged2(a, b)	(grappled2(a, b) + fouled2(a, b))
     75 
     76 #define Xgrappled2(a, b) ((a)->file->grap[(b)->file->index].sn_turn < turn-1 ? grappled2(a, b) : 0)
     77 #define Xfouled2(a, b)	((a)->file->foul[(b)->file->index].sn_turn < turn-1 ? fouled2(a, b) : 0)
     78 #define Xsnagged2(a, b)	(Xgrappled2(a, b) + Xfouled2(a, b))
     79 
     80 #define cleangrapple(a, b, c)	Cleansnag(a, b, c, 1)
     81 #define cleanfoul(a, b, c)	Cleansnag(a, b, c, 2)
     82 #define cleansnag(a, b, c)	Cleansnag(a, b, c, 3)
     83 
     84 #define sterncolour(sp)	((sp)->file->stern+'0'-((sp)->file->captured?10:0))
     85 #define sternrow(sp)	((sp)->file->row + dr[(sp)->file->dir])
     86 #define sterncol(sp)	((sp)->file->col + dc[(sp)->file->dir])
     87 
     88 #define capship(sp)	((sp)->file->captured?(sp)->file->captured:(sp))
     89 
     90 #define readyname(r)	((r) & R_LOADING ? '*' : ((r) & R_INITIAL ? '!' : ' '))
     91 
     92 /* loadL and loadR, should match loadname[] */
     93 #define L_EMPTY		0		/* should be 0, don't change */
     94 #define L_GRAPE		1
     95 #define L_CHAIN		2
     96 #define L_ROUND		3
     97 #define L_DOUBLE	4
     98 #define L_EXPLODE	5
     99 
    100 /*
    101  * readyL and readyR, these are bits, except R_EMPTY
    102  */
    103 #define R_EMPTY		0		/* not loaded and not loading */
    104 #define R_LOADING	1		/* loading */
    105 #define R_DOUBLE	2		/* loading double */
    106 #define R_LOADED	4		/* loaded */
    107 #define R_INITIAL	8		/* loaded initial */
    108 
    109 #define HULL		0
    110 #define RIGGING		1
    111 
    112 #define W_CAPTAIN	1
    113 #define W_CAPTURED	2
    114 #define W_CLASS		3
    115 #define W_CREW		4
    116 #define W_DBP		5
    117 #define W_DRIFT		6
    118 #define W_EXPLODE	7
    119 #define W_FILE		8
    120 #define W_FOUL		9
    121 #define W_GUNL		10
    122 #define W_GUNR		11
    123 #define W_HULL		12
    124 #define W_MOVE		13
    125 #define W_OBP		14
    126 #define W_PCREW		15
    127 #define W_UNFOUL	16
    128 #define W_POINTS	17
    129 #define W_QUAL		18
    130 #define W_UNGRAP	19
    131 #define W_RIGG		20
    132 #define W_COL		21
    133 #define W_DIR		22
    134 #define W_ROW		23
    135 #define W_SIGNAL	24
    136 #define W_SINK		25
    137 #define W_STRUCK	26
    138 #define W_TA		27
    139 #define W_ALIVE		28
    140 #define W_TURN		29
    141 #define W_WIND		30
    142 #define W_FS		31
    143 #define W_GRAP		32
    144 #define W_RIG1		33
    145 #define W_RIG2		34
    146 #define W_RIG3		35
    147 #define W_RIG4		36
    148 #define W_BEGIN		37
    149 #define W_END		38
    150 #define W_DDEAD		39
    151 
    152 #define NLOG 10
    153 struct logs {
    154 	char l_name[20];
    155 	int l_uid;
    156 	int l_shipnum;
    157 	int l_gamenum;
    158 	int l_netpoints;
    159 };
    160 
    161 struct BP {
    162 	short turnsent;
    163 	struct ship *toship;
    164 	short mensent;
    165 };
    166 
    167 struct snag {
    168 	short sn_count;
    169 	short sn_turn;
    170 };
    171 
    172 #define NSCENE	nscene
    173 #define NSHIP	10
    174 #define NBP	3
    175 
    176 #define NNATION	8
    177 #define N_A	0
    178 #define N_B	1
    179 #define N_S	2
    180 #define N_F	3
    181 #define N_J	4
    182 #define N_D	5
    183 #define N_K	6
    184 #define N_O	7
    185 
    186 struct File {
    187 	int index;
    188 	char captain[20];		/* 0 */
    189 	short points;			/* 20 */
    190 	unsigned char loadL;		/* 22 */
    191 	unsigned char loadR;		/* 24 */
    192 	unsigned char readyL;		/* 26 */
    193 	unsigned char readyR;		/* 28 */
    194 	struct BP OBP[NBP];		/* 30 */
    195 	struct BP DBP[NBP];		/* 48 */
    196 	char struck;			/* 66 */
    197 	struct ship *captured;		/* 68 */
    198 	short pcrew;			/* 70 */
    199 	char movebuf[10];		/* 72 */
    200 	char drift;			/* 82 */
    201 	short nfoul;
    202 	short ngrap;
    203 	struct snag foul[NSHIP];	/* 84 */
    204 	struct snag grap[NSHIP];	/* 124 */
    205 	char RH;			/* 224 */
    206 	char RG;			/* 226 */
    207 	char RR;			/* 228 */
    208 	char FS;			/* 230 */
    209 	char explode;			/* 232 */
    210 	char sink;			/* 234 */
    211 	unsigned char dir;
    212 	short col;
    213 	short row;
    214 	char loadwith;
    215 	char stern;
    216 };
    217 
    218 struct ship {
    219 	const char *shipname;		/* 0 */
    220 	struct shipspecs *specs;	/* 2 */
    221 	unsigned char nationality;	/* 4 */
    222 	short shiprow;			/* 6 */
    223 	short shipcol;			/* 8 */
    224 	char shipdir;			/* 10 */
    225 	struct File *file;		/* 12 */
    226 };
    227 
    228 struct scenario {
    229 	char winddir;			/* 0 */
    230 	char windspeed;			/* 2 */
    231 	char windchange;		/* 4 */
    232 	unsigned char vessels;		/* 12 */
    233 	const char *name;		/* 14 */
    234 	struct ship ship[NSHIP];	/* 16 */
    235 };
    236 extern struct scenario scene[];
    237 extern int nscene;
    238 
    239 struct shipspecs {
    240 	char bs;
    241 	char fs;
    242 	char ta;
    243 	short guns;
    244 	unsigned char class;
    245 	char hull;
    246 	unsigned char qual;
    247 	char crew1;
    248 	char crew2;
    249 	char crew3;
    250 	char gunL;
    251 	char gunR;
    252 	char carL;
    253 	char carR;
    254 	int rig1;
    255 	int rig2;
    256 	int rig3;
    257 	int rig4;
    258 	short pts;
    259 };
    260 extern struct shipspecs specs[];
    261 
    262 extern struct scenario *cc;		/* the current scenario */
    263 extern struct ship *ls;		/* &cc->ship[cc->vessels] */
    264 
    265 #define SHIP(s)		(&cc->ship[s])
    266 #define foreachship(sp)	for ((sp) = cc->ship; (sp) < ls; (sp)++)
    267 
    268 struct windeffects {
    269 	char A, B, C, D;
    270 };
    271 extern const struct windeffects WET[7][6];
    272 
    273 struct Tables {
    274 	char H, G, C, R;
    275 };
    276 extern const struct Tables RigTable[11][6];
    277 extern const struct Tables HullTable[11][6];
    278 
    279 extern const char AMMO[9][4];
    280 extern const char HDT[9][10];
    281 extern const char HDTrake[9][10];
    282 extern const char QUAL[9][5];
    283 extern const char MT[9][3];
    284 
    285 extern const char *const countryname[];
    286 extern const char *const classname[];
    287 extern const char *const directionname[];
    288 extern const char *const qualname[];
    289 extern const char loadname[];
    290 
    291 extern const char rangeofshot[];
    292 
    293 extern const char dr[], dc[];
    294 
    295 extern int winddir;
    296 extern int windspeed;
    297 extern int turn;
    298 extern int game;
    299 extern int alive;
    300 extern int people;
    301 extern char hasdriver;
    302 
    303 /* assorted.c */
    304 void table __P((int, int, int, struct ship *, struct ship *, int));
    305 void Cleansnag __P((struct ship *, struct ship *, int, int));
    306 
    307 /* dr_1.c */
    308 void unfoul __P((void));
    309 void boardcomp __P((void));
    310 int fightitout __P((struct ship *, struct ship *, int));
    311 void resolve __P((void));
    312 void compcombat __P((void));
    313 int next __P((void));
    314 
    315 /* dr_2.c */
    316 void thinkofgrapples __P((void));
    317 void checkup __P((void));
    318 void prizecheck __P((void));
    319 int str_end __P((const char *));
    320 void closeon __P((struct ship *, struct ship *, char[], int, int, int));
    321 int score __P((char[], struct ship *, struct ship *, int));
    322 void move_ship __P((const char *, struct ship *, unsigned char *, short *, short *, char *));
    323 void try __P((char[], char [], int, int, int, int, int, struct ship *,
    324     struct ship *, int *, int));
    325 void rmend __P((char *));
    326 
    327 /* dr_3.c */
    328 void moveall __P((void));
    329 int stillmoving __P((int));
    330 int is_isolated __P((struct ship *));
    331 int push __P((struct ship *, struct ship *));
    332 void step __P((int, struct ship *, char *));
    333 void sendbp __P((struct ship *, struct ship *, int, int));
    334 int is_toughmelee __P((struct ship *, struct ship *, int, int));
    335 void reload __P((void));
    336 void checksails __P((void));
    337 
    338 /* dr_4.c */
    339 void ungrap __P((struct ship *, struct ship *));
    340 void grap __P((struct ship *, struct ship *));
    341 
    342 /* dr_5.c */
    343 void subtract __P((struct ship *, int, int [3], struct ship *, int));
    344 int mensent __P((struct ship *, struct ship *, int[3], struct ship **, int *,
    345     int));
    346 
    347 /* dr_main.c */
    348 int dr_main __P((void));
    349 
    350 /* game.c */
    351 int maxturns __P((struct ship *, char *));
    352 int maxmove __P((struct ship *, int, int));
    353 
    354 /* lo_main.c */
    355 int lo_main __P((void));
    356 
    357 /* misc.c */
    358 int range __P((struct ship *, struct ship *));
    359 struct ship *closestenemy __P((struct ship *, int, int));
    360 int angle __P((int, int));
    361 int gunsbear __P((struct ship *, struct ship *));
    362 int portside __P((struct ship *, struct ship *, int));
    363 int colours __P((struct ship *));
    364 void logger __P((struct ship *));
    365 
    366 /* parties.c */
    367 int meleeing __P((struct ship *, struct ship *));
    368 int boarding __P((struct ship *, int));
    369 void unboard __P((struct ship *, struct ship *, int));
    370 
    371 /* pl_1.c */
    372 void leave __P((int)) __attribute__((__noreturn__));
    373 void choke __P((int)) __attribute__((__noreturn__));
    374 void child __P((int));
    375 
    376 /* pl_2.c */
    377 void play __P((void)) __attribute__((__noreturn__));
    378 
    379 /* pl_3.c */
    380 void acceptcombat __P((void));
    381 void grapungrap __P((void));
    382 void unfoulplayer __P((void));
    383 
    384 /* pl_4.c */
    385 void changesail __P((void));
    386 void acceptsignal __P((void));
    387 void lookout __P((void));
    388 const char *saywhat __P((struct ship *, int));
    389 void eyeball __P((struct ship *));
    390 
    391 /* pl_5.c */
    392 void acceptmove __P((void));
    393 void acceptboard __P((void));
    394 void parties __P((int[3], struct ship *, int, int));
    395 
    396 /* pl_6.c */
    397 void repair __P((void));
    398 int turned __P((void));
    399 void loadplayer __P((void));
    400 
    401 /* pl_7.c */
    402 void initscreen __P((void));
    403 void cleanupscreen __P((void));
    404 void newturn __P((int));
    405 void Signal __P((const char *, struct ship *, ...))
    406 	 __attribute__((__format__(__printf__,1,3)));
    407 void Msg __P((const char *, ...))
    408 	 __attribute__((__format__(__printf__,1,2)));
    409 void Scroll __P((void));
    410 void prompt __P((const char *, struct ship *));
    411 void endprompt __P((int));
    412 int sgetch __P((const char *, struct ship *, int));
    413 void sgetstr __P((const char *, char *, int));
    414 void draw_screen __P((void));
    415 void draw_view __P((void));
    416 void draw_turn __P((void));
    417 void draw_stat __P((void));
    418 void draw_slot __P((void));
    419 void draw_board __P((void));
    420 void centerview __P((void));
    421 void upview __P((void));
    422 void downview __P((void));
    423 void leftview __P((void));
    424 void rightview __P((void));
    425 void adjustview __P((void));
    426 
    427 /* pl_main.c */
    428 int pl_main __P((void));
    429 void initialize __P((void));
    430 
    431 /* sync.c */
    432 void fmtship __P((char *, size_t, const char *, struct ship *));
    433 void makesignal __P((struct ship *, const char *, struct ship *, ...))
    434 	 __attribute__((__format__(__printf__,2,4)));
    435 void makemsg __P((struct ship *, const char *, ...))
    436 	 __attribute__((__format__(__printf__,2,3)));
    437 int sync_exists __P((int));
    438 int sync_open __P((void));
    439 void sync_close __P((int));
    440 void Write __P((int, struct ship *, long, long, long, long));
    441 void Writestr __P((int, struct ship *, const char *));
    442 int Sync __P((void));
    443 int sync_update __P((int, struct ship *, const char *, long, long, long, long));
    444