hi,
after a lot of work and search i finally optimize my game and now is playable faster on iphone 3gs and iphone 4
i recuce memory usage from 54 mb to 12mb
reduce cpu usage fro 49% to 19%
and fsp from 49 to 58-60
what i do :
-just read and read tutorial about optimize performance and apply them
-use tiled background
-desable behavior and enable them only when it is necessaire
-use of family and groups
-desable collisions and enable the only when it is neccesaire
-optimize size of sprite and avoird transparent spaces
you can give me your feedback
here is my new game