Name: query_hp - return the amount of hit points of a living

Syntax:
	int query_hp()

Description:
	The query_hp call returns the amount of hit points of a living.

Return value:
	A positive integer indicating the hit points. If the hit points are
	0, the living is dead. The value is always lower or equal to the max_hp.

Examples:
	int hp;
	hp=this_player()->query_hp();

See also: living/query_max_hp, living/query_sp