Returns the enum constant of this class with the specified name.
The string must match exactly an identifier used to declare an
enum constant in this class. (Extraneous whitespace characters are
not permitted.)
Parameters:
name - the name of the enum constant to be returned.
the level of illumination for a given coords. Different light sources affect how much the nighttime
penalties are reduced. Note: this method should be used for determining if a Coords/Hex is illuminated, not
Game::getIlluminatedPositions, as that just returns the hexes that are effected by searchlights, whereas
this one considers searchlights as well as other light sources.