Linux: shared memory odd problem

Hello
I hate ask long and odd questions but this problem make me really insane!!!!!!! please help me. I apologize you.

I coded a game in Linux and it works. (fireballs.cpp)
I decided to code it using shared memory and fork. (fork.cpp)
it works but Player class's Move function that should move player's shield, doesn't clear previously printed characters.

I hope help me

want to mention compilation command:
g++ fork.cpp -o fork.o -lpthread -lncurses -O2 (also for fireballs.cpp)

I apologize you again for my long and odd question. please help me
thank you very much
yours sincerely
fireballs.txt
fork.txt
LVL 17
CSecurityAsked:
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eagerCommented:
Run your program under a debugger (gdb, for example) and step through the code which you expect to clear the characters.

It's a bit tricky to debug a program which forks, because the debugger will only follow the parent, not the child process.  One way around this is to print the PID for the child and have it sleep for a while, which will allow you enough time to attach to the child process.  
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Infinity08Commented:
Maybe you should simply clear the screen before drawing in the main loop ?
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Infinity08Commented:
>> it's clear why!

No it's not :)

Do you still have a problem with this ? Did you try our suggestions ?
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CSecurityAuthor Commented:
although you did not help me but giving you some point will happy me!
thank you very much for your comment
infinity, my friend, sorry!
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Infinity08Commented:
>> although you did not help me

If you want, we can help you further. There's no need to close the question if you don't have a solution. If you explain to us what the problem currently is, we'll be happy to assist you with that :)
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CSecurityAuthor Commented:
my friend
my problem was so odd and hard to tell it to someone else, unfortunately!
so, now I don't want to fix the problem because I don't need the code anymore!
so, I apologize you anymore
regards
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