tunnelling_out.ink

EXTERNAL tunnelDepth() 
=== function tunnelDepth() 
    // Tunnel Depth not supported in inky!
    ~ return 1

=== tunnelOut(-> thenGoTo) 
    { tunnelDepth() > 1:
        // Tunnelling out! 
        ->-> tunnelOut(thenGoTo)
    }
    -> thenGoTo

/*
  On the c# side, bind this external function:
  
    story.BindExternalFunction("tunnelDepth", () =>
    {
        return story.state.callstackDepth;
    });
*/