Noob needs help with replacing turtle functions..

Is there a way to create a function that over-writes an existing function while still being able to call the original function ?

Let me give an example. I wish to have the turtle.forward() command move my turtle up ie turtle.up as well as forward by issuing the turtle.forward command

Thanks

Split into new topic.

Yes, you can. Why not just make a new function that does both and use it instead, though? If you really need exactly this, which I suspect isn't the best solution, you'd just:

local oldForward = turtle.forward

turtle.forward = function()
  if oldForward() and turtle.up() then
    return true
  else
    return false
  end
end

My idea:

local oldUp = turtle.up
local oldForward = turtle.forward
function turtle.forward()
oldUp()
end
function turtle.up()
oldForward()
end

That does not do what OP asked.

Here's a oneliner to replace Feack's code.
turtle.up, turtle.forward = turtle.forward, turtle.up

To answer the OP fully,

turtle.rawforward = turtle.forward
turtle.forward = function() 
  return turtle.rawforward() and turtle.up()
end

^ And it even returns if both moves were succussful! +1

LBPHacker, on 10 June 2013 - 01:54 PM said:

^ And it even returns if both moves were succussful! +1

It's essentially identical to the expanded/simplified code I provided in my original response to OP, so yes, it too provides a success code as a return value.

Lyqyd, on 10 June 2013 - 02:03 PM said:

LBPHacker, on 10 June 2013 - 01:54 PM said:

^ And it even returns if both moves were succussful! +1

It's essentially identical to the expanded/simplified code I provided in my original response to OP, so yes, it too provides a success code as a return value.

Okay, didn't see yours. You know, I got used to you often saying only "Split into new topic" and scrolled further down…