Name: query_light_level - get the current light level from a room

Syntax:
	#include <room2.h>
	int query_light_level();

Description:
	The query_light_level gets the light level from a room. 

Return value:
	A light level greater than zero means that it is light, a light level
	less or equal than zero means that it is dark.

Examples:
	int level;
	level=query_light_level();

See also: efun/set_light, room/query_light_class, room/set_weather