Creates a duplicate of the background with the given index.



Argument Description
index The index of the background to duplicate.

Returns: Real


This function will return the index of a newly created background that is a duplicate (copy) of the one input as the "index" argument. If the function fails, -1 is returned.

NOTE: When you duplicate a background in GameMaker: Studio you must remember to remove it again (with background_delete) when no longer needed, otherwise there is risk of a memory leak which will slow down and eventually crash your game.


new_bck = background_duplicate(background_index[0])

The above code duplicates the background currently being used as the background index of the current room and stores the index for this new background in the variable "new_bck".

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Next: background_assign
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