usr/src/games/atc/def.h

/*
 * Copyright (c) 1987 by Ed James, UC Berkeley.  All rights reserved.
 *
 * Copy permission is hereby granted provided that this notice is
 * retained on all partial or complete copies.
 *
 * For more info on this and all of my stuff, mail edjames@berkeley.edu.
 */

#define AUTHOR_STR              "ATC - by Ed James"

#define PI                      3.14159654

#define LOWFUEL                 15

#define REALLOC                 10

#define SGN(x)                  ((x < 0) ? -1 : ((x > 0) ? 1 : 0))
#define ABS(x)                  ((x < 0) ? -(x) : (x))
#define DIR_FROM_DXDY(dx,dy)    ((int) (atan2((double)(dy), (double)(dx)) \
                                * MAXDIR / (2 * PI) + 2.5 + MAXDIR) % MAXDIR)

#define MAXDIR          8

#define D_LEFT          1
#define D_RIGHT         2
#define D_UP            3
#define D_DOWN          4

#define T_NODEST        0
#define T_BEACON        1
#define T_EXIT          2
#define T_AIRPORT       3

#define S_NONE          0
#define S_GONE          1
#define S_MARKED        2
#define S_UNMARKED      3
#define S_IGNORED       4

#define INPUT_LINES     3
#define PLANE_COLS      20