/*      $OpenBSD: extern.h,v 1.12 2015/12/31 16:44:22 mestre Exp $      */
/*      $NetBSD: extern.h,v 1.8 1998/09/13 15:27:30 hubertf Exp $ */

/*
 * Copyright (c) 1983, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)externs.h   8.1 (Berkeley) 5/31/93
 */

#include <sys/types.h>

#include <setjmp.h>

#ifndef __GNUC__
#define __attribute__(x)
#endif

        /* program mode */
extern int mode;
extern jmp_buf restart;
#define MODE_PLAYER     1
#define MODE_DRIVER     2
#define MODE_LOGGER     3

        /* command line flags */
extern char debug;                      /* -D */
extern char randomize;                  /* -x, give first available ship */
extern char longfmt;                    /* -l, print score in long format */
extern char nobells;                    /* -b, don't ring bell before Signal */

        /* other initial modes */
extern gid_t gid;
extern gid_t egid;

#define die()           (arc4random_uniform(6) + 1)
#define sqr(a)          ((a) * (a))
#define min(a,b)        ((a) < (b) ? (a) : (b))

#define grappled(a)     ((a)->file->ngrap)
#define fouled(a)       ((a)->file->nfoul)
#define snagged(a)      (grappled(a) + fouled(a))

#define grappled2(a, b) ((a)->file->grap[(b)->file->index].sn_count)
#define fouled2(a, b)   ((a)->file->foul[(b)->file->index].sn_count)
#define snagged2(a, b)  (grappled2(a, b) + fouled2(a, b))

#define Xgrappled2(a, b) ((a)->file->grap[(b)->file->index].sn_turn < turn-1 ? grappled2(a, b) : 0)
#define Xfouled2(a, b)  ((a)->file->foul[(b)->file->index].sn_turn < turn-1 ? fouled2(a, b) : 0)
#define Xsnagged2(a, b) (Xgrappled2(a, b) + Xfouled2(a, b))

#define cleangrapple(a, b, c)   Cleansnag(a, b, c, 1)
#define cleanfoul(a, b, c)      Cleansnag(a, b, c, 2)
#define cleansnag(a, b, c)      Cleansnag(a, b, c, 3)

#define sterncolour(sp) ((sp)->file->stern+'0'-((sp)->file->captured?10:0))
#define sternrow(sp)    ((sp)->file->row + dr[(sp)->file->dir])
#define sterncol(sp)    ((sp)->file->col + dc[(sp)->file->dir])

#define capship(sp)     ((sp)->file->captured?(sp)->file->captured:(sp))

#define readyname(r)    ((r) & R_LOADING ? '*' : ((r) & R_INITIAL ? '!' : ' '))

/* loadL and loadR, should match loadname[] */
#define L_EMPTY         0               /* should be 0, don't change */
#define L_GRAPE         1
#define L_CHAIN         2
#define L_ROUND         3
#define L_DOUBLE        4
#define L_EXPLODE       5

/*
 * readyL and readyR, these are bits, except R_EMPTY
 */
#define R_EMPTY         0               /* not loaded and not loading */
#define R_LOADING       1               /* loading */
#define R_DOUBLE        2               /* loading double */
#define R_LOADED        4               /* loaded */
#define R_INITIAL       8               /* loaded initial */

#define HULL            0
#define RIGGING         1

#define W_CAPTAIN       1
#define W_CAPTURED      2
#define W_CLASS         3
#define W_CREW          4
#define W_DBP           5
#define W_DRIFT         6
#define W_EXPLODE       7
#define W_FILE          8
#define W_FOUL          9
#define W_GUNL          10
#define W_GUNR          11
#define W_HULL          12
#define W_MOVE          13
#define W_OBP           14
#define W_PCREW         15
#define W_UNFOUL        16
#define W_POINTS        17
#define W_QUAL          18
#define W_UNGRAP        19
#define W_RIGG          20
#define W_COL           21
#define W_DIR           22
#define W_ROW           23
#define W_SIGNAL        24
#define W_SINK          25
#define W_STRUCK        26
#define W_TA            27
#define W_ALIVE         28
#define W_TURN          29
#define W_WIND          30
#define W_FS            31
#define W_GRAP          32
#define W_RIG1          33
#define W_RIG2          34
#define W_RIG3          35
#define W_RIG4          36
#define W_BEGIN         37
#define W_END           38
#define W_DDEAD         39

#define NLOG 10
struct logs {
        char l_name[20];
        uid_t l_uid;
        int l_shipnum;
        int l_gamenum;
        int l_netpoints;
};

struct BP {
        short turnsent;
        struct ship *toship;
        short mensent;
};

struct snag {
        short sn_count;
        short sn_turn;
};

#define NSCENE  nscene
#define NSHIP   10
#define NBP     3

#define NNATION 8
#define N_A     0
#define N_B     1
#define N_S     2
#define N_F     3
#define N_J     4
#define N_D     5
#define N_K     6
#define N_O     7

struct File {
        int index;
        char captain[20];               /* 0 */
        short points;                   /* 20 */
        unsigned char loadL;            /* 22 */
        unsigned char loadR;            /* 24 */
        unsigned char readyL;           /* 26 */
        unsigned char readyR;           /* 28 */
        struct BP OBP[NBP];             /* 30 */
        struct BP DBP[NBP];             /* 48 */
        char struck;                    /* 66 */
        struct ship *captured;          /* 68 */
        short pcrew;                    /* 70 */
        char movebuf[10];               /* 72 */
        char drift;                     /* 82 */
        short nfoul;
        short ngrap;
        struct snag foul[NSHIP];        /* 84 */
        struct snag grap[NSHIP];        /* 124 */
        char RH;                        /* 224 */
        char RG;                        /* 226 */
        char RR;                        /* 228 */
        char FS;                        /* 230 */
        char explode;                   /* 232 */
        char sink;                      /* 234 */
        unsigned char dir;
        short col;
        short row;
        char loadwith;
        char stern;
};

struct ship {
        const char *shipname;           /* 0 */
        struct shipspecs *specs;        /* 2 */
        unsigned char nationality;      /* 4 */
        short shiprow;                  /* 6 */
        short shipcol;                  /* 8 */
        char shipdir;                   /* 10 */
        struct File *file;              /* 12 */
};

struct scenario {
        char winddir;                   /* 0 */
        char windspeed;                 /* 2 */
        char windchange;                /* 4 */
        unsigned char vessels;          /* 12 */
        const char *name;               /* 14 */
        struct ship ship[NSHIP];        /* 16 */
};
extern struct scenario scene[];
extern int nscene;

struct shipspecs {
        char bs;
        char fs;
        char ta;
        short guns;
        unsigned char class;
        char hull;
        unsigned char qual;
        char crew1;
        char crew2;
        char crew3;
        char gunL;
        char gunR;
        char carL;
        char carR;
        int rig1;
        int rig2;
        int rig3;
        int rig4;
        short pts;
};
extern struct shipspecs specs[];

extern struct scenario *cc;             /* the current scenario */
extern struct ship *ls;         /* &cc->ship[cc->vessels] */

#define SHIP(s)         (&cc->ship[s])
#define foreachship(sp) for ((sp) = cc->ship; (sp) < ls; (sp)++)

struct windeffects {
        char A, B, C, D;
};
extern const struct windeffects WET[7][6];

struct Tables {
        char H, G, C, R;
};
extern const struct Tables RigTable[11][6];
extern const struct Tables HullTable[11][6];

extern const char AMMO[9][4];
extern const char HDT[9][10];
extern const char HDTrake[9][10];
extern const char QUAL[9][5];
extern const char MT[9][3];

extern const char *const countryname[];
extern const char *const classname[];
extern const char *const directionname[];
extern const char *const qualname[];
extern const char loadname[];

extern const char rangeofshot[];

extern const char dr[], dc[];

extern int winddir;
extern int windspeed;
extern int turn;
extern int game;
extern int alive;
extern int people;
extern char hasdriver;

/* assorted.c */
void table(int, int, int, struct ship *, struct ship *, int);
void Cleansnag(struct ship *, struct ship *, int, int);

/* dr_1.c */
void unfoul(void);
void boardcomp(void);
int fightitout(struct ship *, struct ship *, int);
void resolve(void);
void compcombat(void);
int next(void);

/* dr_2.c */
void thinkofgrapples(void);
void checkup(void);
void prizecheck(void);
int str_end(const char *);
void closeon(struct ship *, struct ship *, char[], size_t, int, int, int);
int score(char[], size_t, struct ship *, struct ship *, int);
void move_ship(const char *, struct ship *, unsigned char *, short *, short *, char *);
void try(char[], size_t, char [], size_t, int, int, int, int, int, struct ship *,
    struct ship *, int *, int);
void rmend(char *);

/* dr_3.c */
void moveall(void);
int stillmoving(int);
int is_isolated(struct ship *);
int push(struct ship *, struct ship *);
void step(int, struct ship *, char *);
void sendbp(struct ship *, struct ship *, int, int);
int is_toughmelee(struct ship *, struct ship *, int, int);
void reload(void);
void checksails(void);

/* dr_4.c */
void ungrap(struct ship *, struct ship *);
void grap(struct ship *, struct ship *);

/* dr_5.c */
void subtract(struct ship *, int, int [3], struct ship *, int);
int mensent(struct ship *, struct ship *, int[3], struct ship **, int *, int);

/* dr_main.c */
int dr_main(void);

/* game.c */
int maxturns(struct ship *, char *);
int maxmove(struct ship *, int, int);

/* lo_main.c */
int lo_main(void);

/* misc.c */
int range(struct ship *, struct ship *);
struct ship *closestenemy(struct ship *, int, int);
int angle(int, int);
int gunsbear(struct ship *, struct ship *);
int portside(struct ship *, struct ship *, int);
int colours(struct ship *);
void logger(struct ship *);

/* parties.c */
int meleeing(struct ship *, struct ship *);
int boarding(struct ship *, int);
void unboard(struct ship *, struct ship *, int);

/* pl_1.c */
void child(int);
__dead void choke(int);
__dead void leave(int);

/* pl_2.c */
__dead void play(void);

/* pl_3.c */
void acceptcombat(void);
void grapungrap(void);
void unfoulplayer(void);

/* pl_4.c */
void changesail(void);
void acceptsignal(void);
void lookout(void);
const char *saywhat(struct ship *, int);
void eyeball(struct ship *);

/* pl_5.c */
void acceptmove(void);
void acceptboard(void);
void parties(int[3], struct ship *, int, int);

/* pl_6.c */
void repair(void);
int turned(void);
void loadplayer(void);

/* pl_7.c */
void initscreen(void);
void cleanupscreen(void);
void newturn(int);
void Signal(char *, struct ship *, ...)
         __attribute__((__format__(__printf__,1,3)));
void Msg(char *, ...)
         __attribute__((__format__(__printf__,1,2)));
void Scroll(void);
void prompt(const char *, struct ship *);
void endprompt(int);
int sgetch(const char *, struct ship *, int);
void sgetstr(const char *, char *, int);
void draw_screen(void);
void draw_view(void);
void draw_turn(void);
void draw_stat(void);
void draw_slot(void);
void draw_board(void);
void centerview(void);
void upview(void);
void downview(void);
void leftview(void);
void rightview(void);
void adjustview(void);

/* pl_main.c */
__dead void pl_main(void);
void initialize(void);

/* sync.c */
void fmtship(char *, size_t, const char *, struct ship *);
void makesignal(struct ship *, const char *, struct ship *, ...)
         __attribute__((__format__(__printf__,2,4)));
void makemsg(struct ship *, const char *, ...)
         __attribute__((__format__(__printf__,2,3)));
int sync_exists(int);
int sync_open(void);
void sync_close(int);
void Write(int, struct ship *, long, long, long, long);
void Writestr(int, struct ship *, const char *);
int Sync(void);
int sync_update(int, struct ship *, const char *, long, long, long, long);