Hacking cspsp mod help

[yugdshack]

for reference
I use PPSSPP Emulator
https://www.ppsspp.org/files/1_9_3/ppsspp_win.zip
instructions here
https://www.tapatalk.com/groups/cspsp/guide-compile-cspsp-from-source-t764.html

source codes here
https://github.com/Leajian/cspsp/archive/master.zip
i use following to compile with
http://sourceforge.net/projects/minpspw/files/SDK + devpak/pspsdk 0.10.0/pspsdk-setup-0.10.0.exe/download
In the 'person. cpp' file in the 'src' folder from the source code link posted above, there is a section called 'bool Person:drop(int index, float speed)'. It drops the items and clears the inventory. How can i edit it so that items still drops but the inventory also keeps at least a copy of the items, or maybe keep the items, but drop a copy of the items. It works if i removed the 'mGuns[index] = NULL;' , but the game crashes.
please help. Thank you.