1 ! Copyright (C) 2005, 2006 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: assocs kernel math namespaces sequences system ;
6 TUPLE: timer object delay next ;
8 : <timer> ( object delay initial -- timer )
9 millis + timer construct-boa ;
11 GENERIC: tick ( object -- )
13 : timers \ timers get-global ;
15 : init-timers ( -- ) H{ } clone \ timers set-global ;
17 : add-timer ( object delay initial -- )
18 pick >r <timer> r> timers set-at ;
20 : remove-timer ( object -- ) timers delete-at ;
22 : advance-timer ( ms timer -- )
23 [ timer-delay + ] keep set-timer-next ;
25 : do-timer ( ms timer -- )
26 dup timer-next pick <=
27 [ [ advance-timer ] keep timer-object tick ] [ 2drop ] if ;
30 millis timers values [ do-timer ] curry* each ;