ncurses-gameoflife/main.c

#include <ncurses.h>
// Delay and timing.
#include <unistd.h>
#include <time.h>
// math
#include <math.h>

// game
#include "game.h"
#include "grid.h"
#include "vect.h"


void showLastPressed(char ch);

int main()
{ 
	// init 
	initscr();
	raw();
	noecho();
	
	// Colors
	// allows for transparancy when color values in init_pair(); are set to -1 or, no pair specified
	// e.g init_pair(1, COLOR_WHITE, -1) would be transparent background but white text
	use_default_colors();
	start_color();
	// cell
	init_pair(1, COLOR_BLUE, COLOR_WHITE);
	// text
	init_pair(2, COLOR_YELLOW, -1);
	// cursor
	init_pair(3, COLOR_RED, COLOR_RED);

	// doesn't wait for user to input.
	// timeout(100) waits for 100ms for input.
	timeout(0); 	
	curs_set(FALSE);

	int width = 0;
	int height = 0;

	// stdscr is screen created by initscr()
	getmaxyx(stdscr, height, width);

	// framerate of the game 
	const int FRAME_RATE = 30;
	const float FRAME_TIME = 1.f/(float)FRAME_RATE;

	Grid grid;
	initGrid(&grid, width, height);
	randomizeGrid(&grid);


	float t = 0;
	while (isRunning()) {
		clock_t start_t = clock();
		char ch = getch();

		handleInput(ch);

		// draw grid
		drawGrid(&grid);
		// draw overlays
		showLastPressed(ch);
		showCurPos();

		refresh();
		if (true) updateGrid(&grid);

		usleep(pow(10,6)*(FRAME_TIME-t));
		float t = (float) (clock()-start_t) / (float) CLOCKS_PER_SEC;

	}

	endwin();
	return 0;
}

void showLastPressed(char ch)
{
	static char lastc = ' ';
	if (ch != -1) lastc = ch;
	attron(COLOR_PAIR(2));
	mvprintw(0, 0, "Last Pressed: %c", lastc);
	attroff(COLOR_PAIR(2));
}