Tip: If you give a Muncher tile custom graphics, it will still act like a coin when a silver P-switch is active, whether it looks like a coin or not. So make sure to use ExAnimation if there's a silver P-switch in the area.
Prevents most sprites from walking onto sloped lava tiles, and not getting killed. Sprites that are invulnerable to stars / throw blocks are exceptions to this ; they need to be invulnerable to work correctly.
Does not fix the sideways lava tiles (15A & 15B) yet. Credit not needed.