Maxcript Overload a struct-function

SimonT

As the documentation says, you can defined a function in a struct like

struct foo
(
a, b, c,
fn baz n = sqrt (n + 1),
fn bar x y = print (x ^ 2 + y ^ 2)
)

but is it possible, to overload this function later? So that you tell the function to do different things later in the code? This means, the script could always execute the same function, but the result would be different depending on the code content.

Is this possivble=

haiddasalami

Do you mean function overloading where the script calls the function based on arguments? From what Im reading sounds like you want something like polymorphism.

SimonT

I would like to define the function like above but also be able to do this later:

fn foo.baz = (
print "hello new world"
)

And at this moment the foo.baz() function shall not calculate sqrt(n+1) anymore but just write "hello new world".

haiddasalami

Should be able to do this:

struct coolStruct 
(
	oldFunc = (
		fn structFunc =
		(
			myVal = 10
			print myVal
		)
	)
)
b = coolStruct()
b.oldFunc()
newFunc = (fn test = (print "We changed"))
b.oldFunc = newFunc
b.oldFunc()

Not sure if this would be legal way to do it though :P

The Flying Monk

haiddasalami, I think thats right. You can change amy member of struct as long as you've instanced it.

This works aswell:

struct structBlah
(
  foo,
  bar,
  x,
  y
)
blah = structBlah()

blah.foo = fn foo =
(
  print "foo"
)

You can assign any object to a struct member, Maxscript doesn't care if it is a variable, function or a struct.

SimonT

Thank you guys! And if you want to define a FN directly in the struct it works that way (i had to predefine the fuction name "baz"...if i dont do this, i get errors...):

struct testStruct 
(
	baz,
	a = (	fn baz = print 1 )
)

b = testStruct()
b.a()
b.a = ( fn bla = print 2 )
b.a()