MessageBox Tutorial/Centralized Decision Catching

This is a subsection of the MessageBox Tutorial, and uses this script as a base. The following code may or may not require certain aspects of that script to work, however the information should prove useful for any script (it may take a bit of care to make it work, though).

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For 99.9% of your menus, you won't need to differentiate the decision catching:

  If (Choosing == 0)
...
  Elseif (Choosing == 1)
    If (Choice == -1) ;No choice yet
      Set Choice to GetButtonPressed
    Elseif (Choice == 0)
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  Elseif (Choosing == 2)
    If (Choice == -1) ;No choice yet
      Set Choice to GetButtonPressed
    Elseif (Choice == 0)
...

To reduce the lines used, and to centralize the decision catching, try this instead:

  if (Choosing == 0)
...
  elseif (Choosing > 0) && (Choice == -1)
    Set Choice to GetButtonPressed
...
  elseif (Choosing == 1)
    if (Choice == 0)
...
  elseif (Choosing == 2)
    if (Choice == 0)