helpless/entry.c

int start(int argc, char **argv) {
	
	window.title = fixed_string("My epic game");
	window.width = 400;
	window.height = 400;
	window.x = 200;
	window.y = 200;
	
	seed_for_random = os_get_current_cycle_count();
	
	float64 last_time = os_get_current_time_in_seconds();
	while (!window.should_close) {
		reset_temporary_storage();
		context.allocator = temp;
		
		os_update();
		
		float64 now = os_get_current_time_in_seconds();
		float64 delta = now - last_time;
		last_time = now;
			
		// Print some random FPS samples every now and then
		if ((get_random() % 4000) == 3)
			print("%2.f FPS\n", 1.0/delta);
		
		draw_rect_rotated(v2(-.25f, -.25f), v2(.5f, .5f), COLOR_RED, v2(.25, .25), (f32)now);
		
		Vector2 hover_position = v2_rotate_point_around_pivot(v2(-.5, -.5), v2(0, 0), -(f32)now);
		Vector2 local_pivot = v2(.125f, .125f);
		draw_rect(v2_sub(hover_position, local_pivot), v2(.25f, .25f), COLOR_GREEN);
		
		gfx_update();
	}

	return 0;
}