Name: set_weather - set the weather and light conditions in a room

Syntax:
	#include <room2.h>
	set_weather(int light, int weather, int climate)

Description:
	The set_weather call sets the weather, climate and condition in a room.
	The values are defined in /include/room_defines.h. If the second and
	third arguments are omitted, default arguments are used.

	Light can have the following values:

		LIGHT     - weather dependent light
		LIGHT_ON  - light always on
		LIGHT_OFF - light always off

	Weather can have the following values:

		DEFAULT   - default weather for your castle (default)
		NONE      - absolutely no weather
		INSIDE    - inside weather, the player can look at the sky and is
		            informed about weather changes
		SHELTER   - same as inside apart from the the messages
		OUTSIDE   - full weather, the player gets all the weather effects

	Climate can have the following values:

		STANDARD  - standard climate (default)
		BAD       - bad weather (mostly raining)
		TROPIC    - tropic climate (mostly sunshine)
		JUNGLE    - jungle climate (humid and hot)
		DESERT    - desert climate (hot and dry)
		ARCTIC    - arctic climate (cold with snowstorms)
		OCEAN     - weather you get, when you are in a boat (waves and things)
		FOG       - foggy weather, no sun, dismal weather (e.g. cemetery)

Return value: none

Examples:
	set_weather(LIGHT, OUTSIDE, STANDARD);

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