[Pierre-Marie Baty]

I understand perfectly, however I'm not sure this is feasible. AMX's small script is compiled by AMX itself into bytecode, which is then interpreted. You can't add new opcodes and tell AMX that your external plugin is in charge of handling them, and AMX won't know how to compile your new instructions into bytecodes.

You can still decide to pass commands and instructions elseway. For example, your plugin could feature some simple "send" and "rcv" client commands, that would send and read bytes from a socket, and you could either call them from the server console by hand (great for testing) or through an AMX script by issuing a ClientCommand. It's ugly, but it can work.