Variable

Variables are generally use for representing data in computer languages.
They are used to represent certain things like the number of apples a
player has or his current score, locations of objects and other things
like that. EDL supports some of the lower levels ones from GML such as
the ones below, including regular C++ data types, such as boolean true
or false and floating point integer values.

In ENIGMA and Game Maker,
variables come in several different flavors:

• Constant - All objects may read its value.
  The value never changes. Because of this, a constant isn't
  technically a variable, but it is included here for completeness.
• Global - All objects and instances may access
  and change the variable. If one object changes the variable, other
  objects will see the new value. Global variables come in three
  types: predefined, global flagged, and global dot
  access.
• Global local - All objects and instances
  already have these variables defined, but each instance has a local
  copy. If one instance changes the variable, only that instance will
  see the new value, while other objects and instances will see their
  own value.
• Local - An object may define these variables,
  but each instance has a local copy. Other objects will not see the
  value unless they define it themselves or use dot
  access on the variable. If one instance
  changes the variable, only that instance will see the new value,
  while other instances will see their own value.
• Typed/Scoped - Any variable defined with either
  the var keyword or any of the data
  type keywords becomes a scoped variable. At
  some point, usually at the end of the script or event that the
  variable is in, the scoped variable will disappear, meaning that
  other events cannot access it - called losing scope. This is
  particularly useful in conserving memory - after the variable loses
  scope, its memory may be recycled for something else. To prevent a
  typed variable from losing scope, explicitly flag it as local.

Read Only

Various read only variables such as working_directory.

• File
• Instance
• Room
• Game