Some Native coding questions

[Chaos13]

1. How you can create a iterator (to iterate throught all vertexes in level for example) and make it work like

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ForEach AllVertexes(Level,V)
Draw3DDot(V);

It says that function must be native but i dunno how to make the engine to force *iteration*.

2. How can you return out parameters from native script?

[[]KAOS[]Casey]

1: no idea.
2:

All i know is you put a & next to the variable in the function header in c++

[Chaos13]

1: no idea.
2:

All i know is you put a & next to the variable in the function header in c++

Well your wrong cause it uses special FFrame& Stack to get variables and it gets vars using predefined P_GET_* macros.

Function header is

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void A::exec (FFrame& Stack, RESULT_DECL)

so there is nothing to put & after ...
for example:

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void 
ADNRoot::execReadFile (FFrame& Stack, RESULT_DECL)
{
      //FString* FName;
      FString ReadHere;
      guard (ADNRoot::execReadFile);
      P_GET_STR(FName);
      P_FINISH;
      appLoadFileToString(ReadHere,*FName);
      *(FString*)Result=*ReadHere;
      unguardexec;
}

Any ideas?

[[]KAOS[]Casey]

Not at all. have no real interest in native coding if/when we get 227 headers.

[Raven]

1) No idea, but why would you want it anyway in UScript (i mean this AllVertexes iterator)? Beside it'd be resources consuming, I think that all that stuff should be implemented in C++ only. Unreal Script is really slow .

2) No idea, try to find some examples in public headers. I think it's just like in UScript. You have to read variable (through P_GET mecors) and then assign a value to it. All that P_GET macros are described somewhere in the headers.

[Bane]

2)

from http://www.esconline.org/Resources/native.html

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P_GET_ARRAY_REF, P_GET_STR_REF, etc. - used in the exact same way as the P_GET* macros (not the optional macros), and allows parameters to be paseed by reference. For example: 

native function Foo( out int x, out int y ); 
void MyClass::execFoo( FFrame &Stack, void const *Result )
{ 
     guard( MyClass::execFoo ); 
     P_GET_INT_REF( x ); 
     P_GET_INT_REF( x ); 
     P_FINISH; 

     // Do what we want. 

     unguard; 
}

This should work, unless the guy who wrote it likes to make up Macros. No guarantee on anything from that page, I tried the native tutorial and couldn't get it to work.

[Chaos13]

References*! Thats what i need! ~THANKS!~

-Dim4

P.S: That code is corrupted cause it grabs from stack 2 variables and saves them into same variable (x) so "out int x" will be NEVER read, only "out int y" will be ^_^

I found out some macroses related to Iterators *very happy* ^_^ [smiley=happy.gif]

[Chaos13]

Not at all. have no real interest in native coding if/when we get 227 headers.

Till 227 is 100% ready i prefer to stay at Gold for following reasons:
1. Its more stable
2. It has native headers !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
3. Its final version

By the way native coding gives you REAL power like window creating, accessing native globals, realtime editing, debugging, (Take a look at http://www.oldunreal.com/cgi-bin/yabb2/YaBB.pl?num=1203535382/0#10) - i used that to implement EditObject in my console 8-)

[Chaos13]

I found out all answers i asked in this thread... please someone lock it!