[PD] Collision detection

[Just A Drummer]

I know this may be a bit off what anyone has done but i am trying to 
construct a small shooting game with pd and gem and im having huge trouble 
with the collision detection. i have it working but there are a couple of 
bugs that i have spent hours slaving over.  if anyone has any experience in 
this department it would be very helpful if you could have a look at my 
patch, because i'm losing too much hair over this.
thanks
James

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