Updates:
-Cant get trough walls!!!
-Sounds Added and ballanced.
-Crane movement more moderate and heavy.
-Force added to the crane.
-Levels have names.
-Screen res 700X520
-Keys changed to O and P.
Thank you all for the free Q.A.
-i am working on the walls now.
-i am still trying to solve the behaviour of the string.
-optimized it and now it weights 11Mb instead 20Mb.
this is how it works on my machine:
http://www.youtube.com/watch?v=NrNjUB88RmU
i can't see why the crane's behaviour is not working good.
i think it's related to low power machines do PhisyX calculations.