Note that you also have to turn 'off' a default 'on' preprocessor switch "BOT_PROTECTION" to make use of anything bot-like with OTClient.
Yeah, well it's not very complete. I had to update some of the code in it to even use some basic features, like changing a set item. Also note the auto-heal@health part of it uses the 'stats' reported amount instead of going by 'gamefield lifebar' so it's awkward for high-level OTs.
There are some bots out there that work entirely by link-layer interception isn't there?
Anyway, I plan on trying my hand at editing Tibia Auto to use OTClient sometime. You might want to try to do the same. There's no step-by-step instructions in existence anywhere for something like that though, so don't expect hand-holding.