How do I Create a Button to Show the Next Object?

MAXScript FAQ > Working With Scene Nodes > How do I Create a Button to Show the Next Object?

A user asked:

I want to create a button that shows only one object at a time, hiding all others. When I press it multiple times, it should loop through the scene objects showing me the next one.

Answer:

Here is a possible solution:

SCRIPT

macroScript showNext category: "MXS Help"
(
  local current_object = 0 --this is local to the macroScript
  on execute do
  (
    allObjects = objects as array --collect all objects
    hide $* --hide all objects
    current_object += 1 --increment the counter
    if current_object > allObjects.count do --loop if necessary
      current_object = 1
    if allObjects.count > 0 do --if anything in the scene...
      unhide allObjects[current_object]
    -- then unhide the current object
  ) 
)

And this is the same script, but changed to show objects in alphabetical order:

SCRIPT

macroScript showNextABC category:"MXS Help"
(
  local current_object = 0 --this is local to the macroScript
  on execute do
  (
    -- collect all names and sort them:
    allObjectNames = sort( for i in objects collect i.name )
    hide $* --hide all objects
    current_object += 1 --increment counter
    if current_object > allObjectNames.count do --loop if necessary
      current_object = 1
    if allObjectNames.count > 0 do --if anything in the scene...
      unhide getNodeByName allObjectNames[current_object]
    -- then get the object by name and unhide it
  ) 
)

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