/*   File:	display.h
     By:	Tep Dobry
     login:	tep
     Date:	22 Jul 95

     This file contains the interface for the display module for the
     miensfeld game.  User defined types and function prototypes are
     specified and explained.
*/

/* The following data type, Glif, is used by the show_glif() function
   to specify the glif image to appear on the board.
*/
enum Glif {TIMMY, SAFE, EMPTY, FLAG, MINE, FL_MINE, EXPLODE };
typedef enum Glif Glif;

void draw_board(void);
/* This function initializes the game board.  It should be called at the
	beginning of each game. It is given and returns nothing.
*/

void clear_screen(void);
/* This function terminates the display.  It should be called at the
	end of the program.  It is given and returns nothing.
*/

void show_glif(Glif glif, int row, int col, int Adj_count);
/*  This function draws a specified glif on the board at the row
	and column specified.  The glif is indicated by the Glif type
	value; one of the symbols listed in the enum type above. The
	adjecency count, if non-zero, is displayed in the lower right
	of the glif.  It is given a Glif, and three integers and returns
	nothing.
*/

void update_mines(int num);
void update_flags(int num);
void update_score(int num);
/*  These three functions are given an integer in the range 0 to 99 and
	update the display of the mines, flags and score, respectively.
	They all return nothing.
*/

void write_message(int line, char *msg);
/*  This function is used to write messages in the left area of the screen.
	It is given an integer indicating the line of the display (0 to 23) to
	place the message, given as a string.  It returns nothing.
	The function only displays the first 25 characters of msg, or
	up to the first '\n' in the string.  If no newline is present,
	msg replaces the entire line on the screen.  If a newline is
	present in the string, only characters up to the newline replace
	those on the line, leaving the remainder of the line intact.
*/