[SimonItaly]

pawn Код:

new Float:tmp[3],i;
for(;; i++)
if(i==MAX_3DTEXT_GLOBAL) break;

I won't discuss the functionality of this include, but I don't think that this will make your code wiser, just more unreadable.

Edit: you're also looping through MAX_3DTEXT_GLOBAL = 1024 labels every 199 milliseconds, that's a bit heavy for me. Consider using foreach.
There's also a double check for INVALID_3DTEXT_ID in Detach3DTextLabel.