How do I make a frog tongue work like a grappling hook?

I am trying to make a frog tongue work like a grappling hook. You would touch the screen and the frog would shot its tongue in the direction of the touch. If the tongue hits a platform it graps to that platform and makes the frog swing acting like a grapplink hook or rope.

The frog can then swing in order to move to a different platform.

I have been looking throught the forum and some old videos and there's apparently a way to do it. Unfortunately all the links to examples and capx are old and not available anymore.

This video actually shows exactly what I'm looking for but there's no capx or tutorial on how to do it:

youtube.com/watch

How can I do this mechanic? Any tips?

Thanks in advance,

Are you using physics, platform, or a custom system for movement?

Ideally it will use physics. I tried cheating the behavior without physics but it didn't work.

The basis of a grapple in physics is the revolute joint. Here is an example.

dropbox.com/s/uujkpeccyq20vvx/Physics-revolutejoint.c3p

To get it to wrap around solids, the most straightfoward way is to make a chain of revolute joints. Basically you break up the line into many segments, down to 1 pixel each, and make them all connect to each other in order. You can do this with families and instance variables to keep track of each segment to pick the correct ones to make joints with.