I was wondering if there's already an external or forge-implemented API for adding tabs, specifically to the player's inventory screen (<E> Key.) The effect I'm looking for is something like what Tinkers' Construct has for its extra armor/accessories tab and its knapsack tab (Direwolf20 shows it off in his mod spotlight found in that link at 25:00 minutes.)

 

Now, I know I can fake it by drawing on tabs in the tick handler when the current gui screen is the player inventory, but handling that and disabling/enabling inventories to only draw when a certain tab is active is going to get very tricky and/or messy, which is why I'm wondering if there's a better, probably more streamlined and compatible (E.g. so my tabs won't draw on top or under Tinkers' tabs) way to do it.

 

Thanks in advance.

 

P.S. I haven't yet updated my mod from 1.5.2 to 1.6.2. If the method to do this is 1.6.2 only, that'd be good to know

I would suggest looking into vanilla creative inventory code. That would allow you to see how the tabs are added and such.