AS3 Casting one type to another

Question

I have a base class called Room and a subclass called Attic, and another called Basement.

I have a controller class that has a

Answer 1

Here are your options for casting in ActionScript 3:

1. Use as.

   var myAttic:Attic = Controller.CurrentLocation as Attic; // Assignment.
   (Controller.CurrentLocation as Attic).propertyOrMethod(); // In-line use.
   

   This will assign null to myAttic if the cast fails.

2. Wrap in Type().

   var myAttic:Attic = Attic(Controller.CurrentLocation); // Assignment.
   Attic(Controller.CurrentLocation).propertyOrMethod(); // In-line use.
   

   This throws a TypeError if the cast fails.