@googlegroups.com [mailto:racket-users@googlegroups.com] On
Behalf Of Stephen Bloch
Sent: Tuesday, August 25, 2015 6:10 AM
To: racket-users@googlegroups.com
Subject: [racket-users] 2htdp/universe performance
John Carmack writes:
The performance problems were related to the larger scrolling worlds. The H2DP
John Carmack writes:
The performance problems were related to the larger scrolling worlds. The
H2DP versions got slower the more clouds were in the maps.
If the background is basically static but scrolling, you might get a
substantial performance improvement by
(define background (freeze
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