Welcome to our Spooky Ghost Scene!

We have created a spooky graveyard scene complete with ghosts, candles, graves, a fence, and fog.
To operate:
- Press 0 to toggle the ghost animation on and off.
- Press 1 to toggle the first row of graves.
- Press 2 to toggle the second row of graves.
- Press 3 to toggle the third row of graves.
- Press 4 to toggle the fourth row of graves.
- Press S to play a spooky sound effect.