Base Class - Super Constructor

BlitzMax Forums/BlitzMax Beginners Area/Base Class - Super Constructor

Goober

(Posted 2010) [#1]

Take this as my base class:

Type ExampleBaseClass
	Function Construct:ExampleBaseClass(ob:SomeObject)
		' Note: do I need to make a new object of the base class?
		Local retObject:ExampleBaseClass = new ExampleBaseClass

		' Do code here to set-up base class
		
		return retObject
	End Function
End Type

Type Stuff Extends ExampleBaseClass
	Function Construct:Stuff(ob:SomeObject)
		' Note: how is the super constructor called? How do I give it the object it needs?
		Local retObject:Stuff = new Stuff

		' Continue code, with base class set up
		
		return retObject
	End Function
End Type

I included 2 notes in the above code that have the questions I need answered.
Edit this code as needed, there is not much documentation on how BlitzMax does this.

Brucey

(Posted 2010) [#2]

how is the super constructor called? How do I give it the object it needs?

You use Methods instead... it's much more flexible.

Type ExampleBaseClass
	Method Construct:ExampleBaseClass(ob:SomeObject)

		' Do code here to set-up base class
		
		Return Self
	End Method
	
End Type


Type Stuff Extends ExampleBaseClass
	Method Construct:Stuff(ob:SomeObject)
		' Continue code, with base class set up
		Super.Construct(ob)
		
		Return Self
	End Method
End Type


' to create a new Stuff :
Local myStuff:Stuff = New Stuff.Construct(....)

Goober

(Posted 2010) [#3]

Works great, and I never thought of using a method for a constructor...

my old way[Pseudo Code]:

private varInt
------------------------------------------
function constructor(intValue) {
    declare object = new Object
    object.varInt = intValue
    return object
}

and then i continue with OOP with the object, but I like your 'method' a lot better!
Thanks! rep+1 ;)