Name: add_soaked - add soaking to a player

Syntax:
	add_soaked(int soak)

Description:
	The add_soaked call adds soaking to a player. Depending on the level,
	a player is not able to drink any more non-alcoholik drinks if he is
	too soaked.

	The player is not notified about this action. It is possible to call this
	function with a negative value.

Return value: none

Examples:
	this_player()->add_soaked(10);
	
See also: player/add_intoxination, player/add_stuffed, player/query_soaked