timeline_exists

With this function you can check and see whether a time line exists (returns true) or not (returns false). This is particularly useful when creating Timelines dynamically using the timeline_add() function, but you should note that if you search for an uninitialised variable (that would otherwise be assigned to a time line's index) an error will be thrown.

Syntax:

timeline_exists(ind);

Returns:

Boolean

Example:

if (timeline_exists(global.tl))
{
    timeline_delete(global.tl);
}

The above code checks to see if a time line exists and is indexed in the global variable "tl" and if so it then deletes that time line.