notes on improving 2htdp/universe

svn: r17766
2010-01-21 18:51:08 +00:00 · 2010-01-21 18:51:08 +00:00 · 178777234d
commit 178777234d
parent 03368f8fc6
1 changed files with 5 additions and 0 deletions
--- a/collects/2htdp/universe.ss
+++ b/collects/2htdp/universe.ss
@ -1,6 +1,11 @@
 #lang scheme/gui

 #| TODO: 
+   -- yield instead of sync
+   -- run callbacks in user eventspace
+   -- make timer fire just once; restart after on-tick callback finishes
+   -- take out counting; replace by 0.25 delay
+
   -- make window resizable :: why
   -- what if clauses are repeated in world and/or universe descriptions? 
   -- what if the initial world or universe state is omitted? the error message is bad then.