This is a little schematic I made, it's a pig trap that uses water and lava to get you almost 4 stacks of cooked pork in 1 click. It is a little big, so sorry about that, but if you have it underground with a little control center where the cooked pork delivery area is, you'll be fine. I put some effort into this, so I hope it isn't too bad. Have fun with this! (Oh btw the grass gets turned to dirt by the water, but the fences also protect some grass and so it grows over the dirt.)