SWIG_NewPointerObj and values always being nil
- by Tom J Nowell
I'm using SWIG to wrap C++ objects for use in lua, and Im trying to pass data to a method in my lua script, but it always comes out as 'nil'
void CTestAI::UnitCreated(IUnit* unit){
lua_getglobal(L, "ai");
lua_getfield(L, -1, "UnitCreated");
swig_module_info *module = SWIG_GetModule( L );
swig_type_info *type = SWIG_TypeQueryModule( module, module, "IUnit *" );
SWIG_NewPointerObj(L,unit,type,0);
lua_epcall(L, 1, 0);
}
Here is the lua code:
function AI:UnitCreated(unit)
if(unit == nil) then
game:SendToConsole("I CAN HAS nil ?")
else
game:SendToConsole("I CAN HAS UNITS!!!?")
end
end
unit is always nil. I have checked and in the C++ code, the unit pointer is never invalid/null
I've also tried:
void CTestAI::UnitCreated(IUnit* unit){
lua_getglobal(L, "ai");
lua_getfield(L, -1, "UnitCreated");
SWIG_NewPointerObj(L,unit,SWIGTYPE_p_IUnit,0);
lua_epcall(L, 1, 0);
}
with identical results.
Why is this failing? How do I fix it?
