/* Demonstrate moving an icon around the screen while "background"
	** action continues - in this case, the icon drifts right. */

#include <stdio.h>
#include <curses.h>

main()

{
	int	i,r,c;
	char	ch;

	initscr();	/* turn on curses */
	clear();	/* clear screen */
	noecho();	/* turn off echo */
	cbreak();	/* turn off line buffering */
	halfdelay(2);	/* wait 2/10 seconds for char to appear in buffer */
	r=LINES/2;
	c=COLS/2;

	while (1) {
		move (r,c);
		addstr("M");
		move (LINES-1,0);
		refresh();
//		usleep(100000);
		ch=getch();	/* wait for user input */
		move (r,c);	/* absolute position, not relative */
		addstr(" ");	/* draw empty space */
		if (ch == ERR)
			c++;	/* background action */
		if (ch == 'q')
			break;
		if (ch == 'w')
			r--;
		if (ch == 'a')
			c--;
		if (ch == 's')
			r++;
		if (ch == 'd')
			c++;
		if (r >= LINES)
			r=LINES-1;
		if (r < 0)
			r=0;
		if (c < 0)
			c=0;
		if (c >= COLS)
			c=COLS-1;
	}

	endwin();	/* turn off curses */
}