constructors

BlitzMax Forums/BlitzMax Programming/constructors

cloned

(Posted 2006) [#1]

does anyone know how to use constructors in BMax

i know how to use New as a method but i want to make multiple ones or pass variables into the method

Scott Shaver

(Posted 2006) [#2]

I don't think there are real constructors in bmax. you just add functions like the one below to the type.

	Function Create:SpriteFrame(frame:Int,nextSpeed:Long,prevSpeed:Long)
		Local m:SpriteFrame = New SpriteFrame
		m.frame = frame
		m.nextSpeed = nextSpeed
		m.prevSpeed = prevSpeed
		Return m
	End Function

grable

(Posted 2006) [#3]

Well, there is that other method too ;)

Type TList
  Method Create:TList()
    Return Self
  EndMethod
EndType

Local list:TList = New TList.Create()

Dreamora

(Posted 2006) [#4]

Easiest way for constructor:

Type TTest
   field x:int, y:int

   Method Create:TTest(x:int, y:int)
      self.x = x
      self.y = y
      return self
   end method
end type

global Test:TTest = new TTest.Create(10,10)
' or for making sure you will never have precedence problems:
' global Test:TTest = (new TTest).Create(10,10)

Grey Alien

(Posted 2006) [#5]

You are all nuts using that "New TWhatever.Create()" method instead of the function as Scott Shaver has posted. Uh that's just my 2 cents. Also way to confuse link1426.

LarsG

(Posted 2006) [#6]

you can also override the New() method..

UByte

(Posted 2006) [#7]

@Grable & Dreamora

That had never occured to me before. I prefer this form to the Function alternative (which I'de been using previously.)

H&K	(Posted 2006) [#8]

You are all nuts using that "New TWhatever.Create()" method instead of the function as Scott Shaver has posted. Uh that's just my 2 cents. Also way to confuse link1426.

I qite agree. A member function create is a lot more sensible than a member method create. AND is has the bonus that the new is inside the function (well can be)
BUT my member function Create just calls a member method allocate

cloned

(Posted 2006) [#9]

thank you and i will use th function way instead of a method

now i gotta redo some code, what a pain in the arse