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I would like to ask a question.... for a MMO RPG wrote by C++ and using LUA as a script tools..... when a player access the script like
the following..
if (gold >= 5000) Dec(gold, 5000)
How do the server know which player will be decreased $5000 since in LUA doesn't know the player UIN......
Lua will know the player UIN if you tell it the player UIN. But I think your code would probably look more like the following:
if(myPlayer.gold >= 5000) then myPlayer.gold -= 5000 end
In this situation you might need to protect players from each other. So maybe the setup is like this:
/* in C++ or C code */
setup_lua_environment_for_user(UIN);
/* now lua references to gold mean UIN.gold */ call_lua_script(SCRIPT);
setup_lua_environment_for_user(OTHER_UIN);
/* now lua references to gold mean OTHER_UIN.gold */ call_lua_script(SCRIPT);
Eero