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game.loop: using timer's next-nanos, which is in the future. 

Also, use clamp to make sure tick offset is always [0,1].
master
John Benediktsson 2020-01-06 13:14:59 -08:00
parent d3b9974bed
commit 249b916636
1 changed files with 5 additions and 6 deletions
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11
extra/game/loop/loop.factor
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@ -1,9 +1,8 @@
! Copyright (C) 2009 Joe Groff. ! Copyright (C) 2009 Joe Groff.
! See http://factorcode.org/license.txt for BSD license. ! See http://factorcode.org/license.txt for BSD license.
USING: accessors timers alien.c-types calendar classes.struct USING: accessors calendar continuations destructors fry kernel
continuations destructors fry kernel math math.order memory locals math math.order system timers ui ui.gadgets.worlds
namespaces sequences system ui ui.gadgets.worlds vm vocabs.loader ;
vocabs.loader arrays locals ;
IN: game.loop IN: game.loop
TUPLE: game-loop TUPLE: game-loop
@ -36,8 +35,8 @@ TUPLE: game-loop-error-state error game-loop ;
<PRIVATE <PRIVATE
: last-tick-percent-offset ( loop -- float ) : last-tick-percent-offset ( loop -- float )
[ draw-timer>> next-nanos>> nano-count swap - ] [ draw-timer>> next-nanos>> nano-count - ]
[ tick-interval-nanos>> ] bi /f 1.0 min ; [ tick-interval-nanos>> ] bi /f 0.0 1.0 clamp ;
GENERIC#: record-benchmarking 1 ( loop quot -- ) GENERIC#: record-benchmarking 1 ( loop quot -- )