Harpoon

[Daomephsta]

Found this tucked away in the source

[02:44:19] <Jindra34> (Also what do you think of a harpoon gun? To pull
things towards you, as a use of string/wool and wood?)
[02:46:48] <@Domochevsky> (Hm, I could see that playing, same as a grappling gun,
but how to make that happen... a critical part is missing there, in the
whole "move entity towards something")
[02:47:10] <Jindra34> (I figured
it just be a simple teleport.)
[02:47:41] <Jindra34> (Grappling gun is
really the one where MOVE TO is important)
[02:48:19] <Jindra34> (Also
harpoon gun should have a move/teleport exclusion on Big Mobs like the
Wither, Ender Dragon and Ghasts)
[02:49:44] <Jindra34> (Then again being
able to manipulate where ghasts are would make getting their drops
easier... hm...)
[02:49:58] <@Domochevsky> (True... which is not a bad
thing, mind you)
[02:50:37] <@Domochevsky> (A harpoon gun of sorts is
actually something I could see an ender pearl doing, with the whole
"reverse teleport" thing)
[02:51:12] <@Domochevsky> (So using those as
ammo to pretend that the target threw this at your feet instead of the
other way around ingame)
[02:51:49] <Jindra34> (True, just need a
material to act as a 'reflector' for the pearl)