/* Random definitions used everywhere in Xconq.
   Copyright (C) 1987-1989, 1991-1997, 1999 Stanley T. Shebs.

Xconq is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.  See the file COPYING.  */

#ifndef TRUE
#define TRUE (1)
#endif
#ifndef FALSE
#define FALSE (0)
#endif

/* This is how we do optional const decls. */

#ifndef CONST
#define CONST const
#endif /* CONST */

#ifndef ABS
#define ABS(x) (((x) < 0) ? (0 - (x)) : (x))
#endif

#ifndef min
#define min(x,y) (((x) < (y)) ? (x) : (y))
#endif

#ifndef max
#define max(x,y) (((x) > (y)) ? (x) : (y))
#endif

#define between(lo,n,hi) ((lo) <= (n) && (n) <= (hi))

#define limitn(lo,n,hi) ((n) < (lo) ? (lo) : ((n) > (hi) ? (hi) : (n)))

#define flip_coin() (xrandom(257) % 2)

#define avg(a,b) (((a) + (b)) / 2)

#ifndef isspace
#define isspace(c) ((c) == ' ' || (c) == '\n' || (c) == '\t' || (c) == '\r')
#endif

#define lowercase(c) (isupper(c) ? tolower(c) : (c))

#define uppercase(c) (islower(c) ? toupper(c) : (c))

/* This tests a string to see if it has anything in it. */

#define empty_string(s) ((s) == NULL || s[0] == '\0')

extern char spbuf[];
extern char tmpbuf[];

#ifdef DEBUGGING

/* Debugging definitions. */

#define Dprintf if (Debug && dfp) debug_printf
#define DMprintf if (DebugM && dmfp) debugm_printf
#define DGprintf if (DebugG && dgfp) debugg_printf

#define Dprintlisp(X) if (Debug && dfp) fprintlisp(dfp, (X))
#define DMprintlisp(X) if (DebugM && dmfp) fprintlisp(dmfp, (X))
#define DGprintlisp(X) if (DebugG && dgfp) fprintlisp(dgfp, (X))

/* If the debug flags are not macros, then declare them as globals. */

#ifndef Debug
extern int Debug;
#endif
#ifndef DebugM
extern int DebugM;
#endif
#ifndef DebugG
extern int DebugG;
#endif

extern FILE *dfp;
extern FILE *dmfp;
extern FILE *dgfp;

#else /* DEBUGGING */

/* Make defns and calls vanish if possible. */

#define Dprintf if (0) debug_printf
#define DMprintf if (0) debugm_printf
#define DGprintf if (0) debugg_printf

#define Dprintlisp(X)
#define DMprintlisp(X)
#define DGprintlisp(X)

#define Debug (0)
#define DebugM (0)
#define DebugG (0)

#define dfp stdout
#define dmfp stdout
#define dgfp stdout

#endif /* DEBUGGING */

typedef struct a_library_path {
    char *path;
    struct a_library_path *next;
} LibraryPath;

#define for_all_library_paths(p)  \
  for (p = xconq_libs; p != NULL; p = p->next)

extern LibraryPath *xconq_libs;
extern LibraryPath *last_user_xconq_lib;

extern void init_xrandom(int seed);
extern int xrandom(int m);
extern int probability(int prob);
extern int roll_dice(int n);
extern int multiply_dice(int dice, int mult);
extern int prob_fraction(int n);

extern char *xmalloc(int amt);
extern void report_malloc(void);
extern void tprintf(char *buf, char *str, ...);
extern void tnprintf(char *buf, int n, char *str, ...);
extern int select_by_weight(int *arr, int numvals);
extern char *copy_string(char *str);
extern char *pad_blanks(char *str, int n);
extern int iindex(int ch, char *str);
extern long idifftime(time_t t1, time_t t0);
extern void case_panic(char *str, int var);
extern int isqrt(int i);
extern void init_debug_to_stdout(void);
extern void update_debugging(void);
extern void toggle_debugging(int *flagp);
extern void debug_printf(char *str, ...);
extern void debugm_printf(char *str, ...);
extern void debugg_printf(char *str, ...);

extern void prealloc_debug(void);

extern void record_activity_start(char *type, int detail);
extern void record_activity_end(char *type, int detail);
extern void dump_activity_trace(void);

extern void vtprintf(char *buf, char *str, va_list ap);

extern void log_warning(char *typ, char *str);

/* Needed for emergency game savers. */
extern int write_entire_game_state(char *fname);

/* New wrapper for fopen defined in mac.c and unix.c. */
extern FILE *open_file(char *filename, char *mode);