We should begin a new list of things a developer should take care of when he is developing engine plugins accessed via liteC (even it is not out yet, but I assume that most C++ plugin developers have access to the liteC beta).

I will begin with "how to pass vectors to a DLL" because its a bit different now than with cscript and I got some headaches since yesterday night

Code:

---

//liteC:

   //call:

   VECTOR* testVector [3];

   testVector[0] = 15;
   testVector[1] = 2009;
   testVector[2] = 666;

   dllTest(testVector);

   //prototype:
   void dllTest(VECTOR* position);

//C++

   //DLL function
   DLLFUNC void dllTest (VECTOR* position)
   {
      char buffer [50];
      int n;
      n = (int)position->y;
      n=sprintf (buffer, "%d", n);
      error(buffer);
   }

---

Please post other snippets here and NO posts like "yay thats a cool idea - but I dont have a clue about that topic".

Thank you.

OK, I see.
Any special things to observe, when I want to pass the vector back to liteC?
Lets say, C++ dll changed the vector to 16,2010,667 and now I want to pass these values back to liteC's testVector[3]?

Code:

---

//C++

   //DLL function
   DLLFUNC void dllTest (VECTOR* position)
   {
      char buffer [50];
      int n;
      n = (int)position->y;
      n=sprintf (buffer, "%d", n);
      error(buffer);
   }

---

Please keep in mind that all a6/a7 objects are fixed point vars (21.10's I think, with a sign bit, I know for a fact int of 1024 = var 1.0 in engine). So it's best to convert them over in case you do any multiplication etc.

i study for "3dgs7\sdk_plugin\sampledll.cpp",but i have a question,
and then build by vs2005,at last i get "sampledll.dll".
and i can used sampledll.wdl to call sampledll`s function,but ): I can`t used sampledll.c to call sampledll`s function.

this is a part of sampledll.cpp
//---------------------------------------------------------
///////////////////////////////////////////////////////////////////////
// Use this source as template for your own DLLs.
// Copy sampledll.dll to the acknex_plugins folder,
// and include "sampledll.wdl" into your script.
///////////////////////////////////////////////////////////////////////
//---------------------------------------------------------

is that mean we can`t call dll`s function by lite-C??

can you tell me?

Plugins should load automaticly in lite-c when in A7's plugin folder.
You then can use Prototypes to initilize plugins functions.
eg: function init_blah();

When you publish your project the plugin needs to be in the exe folder.

thank you ^_^

i have question for call my dll`s function
C++
i build it and put to "3dgs7\acknex_plugins\sample.dll"
---------------------------------------------------------------
---------------------------------------------------------------
# pragma warning (disable:4312)
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <stdlib.h>
#include <malloc.h>
#include <memory.h>
#include <tchar.h>
#include <math.h.>
#define DLL_USE
#include "adll.h"
BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved )
{
engine_bind();
return TRUE;
}
DLLFUNC var my_square(var x)
{
return ( _VAR( _FLOAT(x) * _FLOAT(x) + 1 ));
}
-------------------------------------------------------------------------
-------------------------------------------------------------------------
lite-C: sampledll.c by Script Editor

// lite-C header for sampledll.dll

function my_square(x);
#include <acknex.h>
#include <default.c>
STRING* str_msg = "sampledll.c";
TEXT* txt_1 =
{
pos_y=10;
string(str_msg);
flags = SHOW;
}
void main()
{
str_for_num(str_msg,my_square(3));
}
-------------------------------------------------------------------------
-------------------------------------------------------------------------


and then i run sampledll.c ,but i get a error file!
(ackerr.txt)
----------------------------------------------------------
Error in 'MAIN' line 3: 'function' undeclared identifier
<function my_square(x);>
----------------------------------------------------------

help me ! guys

Please do not post your questions in this thread as this thread is only for usefull examples/code.

Start a new thread with your problem.