#!/usr/bin/env python3

import sys, os

def ignore_sighup():
    """
    Ignore hangup signal (that is thrown when launching from systemd?).
    Taken from https://stackoverflow.com/questions/57205271/how-to-display-pygame-framebuffer-using-systemd-service
    """
    import signal
    def handler(signum, frame):
        pass
    signal.signal(signal.SIGHUP, handler)

# Change directory to the directory of the program launching the script (usually this script "OPEN-GAME").
if "--go-to-dir" in sys.argv:
    os.chdir(os.path.dirname(sys.argv[0]))

# Use the KMS video driver. This works for newer versions of Raspberry Pi with the KMS overlay
# enabled, SDL 2, and Pygame 2.
if "--kms" in sys.argv:
    os.putenv("SDL_VIDEODRIVER", "kmsdrm")

# Use the framebuffer display. This only works with Pygame 1.9.6 (and SDL 1.2).
if "--fb" in sys.argv:
    os.putenv("SDL_VIDEODRIVER", "fbcon")
    os.putenv("SDL_FBDEV", "/dev/fb0")

# Ignore hangup signal. This may be necessary when launching from systemd.
if "--ignore-hangup" in sys.argv:
    ignore_sighup()

from electric_sieve.ElectricSieve import ElectricSieve

ElectricSieve().run()