question about struct

im wondering if its possible to do:
[jass]struct B
endstruct

struct A extends B
endstruct[jass]

and if possible, will A have all methods B have?

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Also another problem with NewJassGen v3, it worked fine in version 2:


where OOMS_MotionObjects[Mi] is a struct.
But a struct is only an integer number, so how come i get error in compiling:
Relation comparrission between special type and native type... How do i convert a struct type to integer then, without making an integer variable and set that to the struct:

1. interfaces, but methods are not recycled.

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if ( integer(OOMS_MotionObjects[Mi]) >-1) then
But why compare with -1? You should compare with zero struct (aka 0) it is legal to use > with 0 and an struct.

because i want to make sure, everything is under control. cus when i destroy, i set OOMS_MotionObjects[Mi] = -1
But doesnt matter, i can just use integer then.

And about the interface.... Well what i wanted to do with that is to do this:

dunno if u know what i mean. But i want that struct A to have overloaded methods, so it call the right method depends on the parameter (like overloaded functions in C++).
And no matter what Create function it calls, the struct A must have all the other methods with it.

I want this to make it so in my system, you only need to call
A.Create('hfoo') - to create a particle from unit type footman
A.Create(unit) - to create a particle from an existing unit.
Also call same method name.

Atm i have A.Create('hfoo') and A.CreateFrom(unit)
But i want same name.

Just i cant figure out how to do it.

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Also another question:
Is it possible to overload operator + and - ? or is it only possible to overload [], < and >

you can just set to 0 instead of -1 ...

ye problem is i dont know why should i set to 0...
But can u answer the operator question? can i overload operators + and -?

No.

And for starters -1 is not an struct, so if you ever had local structtype s=-1 this will cause syntax errors when type safety is implemented. You could just use 0, I don't see how it changes the logic there.

it is just to keep things under control. The -1 value is controlled by my own arrays, so it wont effect the truct arrays. Therefore it doesnt matter. it gets the job done :P
Btw i cant use 0, cus when a struct is destroyed it isnt saved to my array as 0.

But:
local object a = object.create()
call a.destroy()

a == 0 ? - will a be 0 now?

why would it be 0 ? struct variables are references it will still point to something.

But if you already take the effort to set the variable to -1 you may as well just set it to 0. Either way if you insist on using -1, use correct typecast operators unless you want your system to fail with the jasshelper version that includes type safety.

Well as long as u dont make it imposible to set an integer = struct type then everything will be fine

That's what I am saying , it will be impossible to do that.

instead:
set integervar = integer(structtypevar)

... why are u so mean. Then i wont update >(
i dont quite understand how to typecast yet...
in c++ its just like this: Int(something)
what about here

In C++ it is just like static_cast<unsigned integer>(pointer) kind of worse.

What you said Int(something) is exactly what the typecast is in vJass ...

but as i read documentation.... u needed to make a struct called wek in order to call wek(W)... i dont wanna make new struct just for typecast. or am i understanding wrong. can u give better example?

You are missunderstanding terribly

thwn can u explain?