1 /* $Id: ship.c,v 1.19 2005/06/30 15:09:26 oohara Exp $ */
2 
3 #include <stdio.h>
4 /* strlen */
5 #include <string.h>
6 
7 #include "ship.h"
8 
9 static int ship = 5;
10 
11 void
clear_ship(void)12 clear_ship(void)
13 {
14   ship = 5;
15 }
16 
17 /* return the new value of ships */
18 int
add_ship(int delta)19 add_ship(int delta)
20 {
21   ship += delta;
22   if (ship < -1)
23     ship = -1;
24   return ship;
25 }
26 
27 int
get_ship(void)28 get_ship(void)
29 {
30   return ship;
31 }
32