#define nil     0
#define true    1
#define false   0

#define bdsize  15
#define i_cost  3
#define max_vel 12
#define initunit        35
#define initmoney       30
#define mb_cost 8
#define c_cost  16
#define s_cost  6
#define amb_cost        35
#define b_cost  70
#define c_guns  7
#define b_guns  40
#define s_def   2
#define t_def   1
#define nstars  21
#define initvel          1
#define initrange        5
#define initweap         3 
#define iu_ratio         2
#define blank_line       "                              "
#define t_e_prob        10.0
#define t_e_var         5
#define s_e_prob        70.0
#define s_e_var         10
#define c_e_prob        90.0
#define c_e_var         10
#define b_e_prob        97.0
#define b_e_var         3

#define  MIN(x,y) (x < y) ? x : y