Juan,
Thanks for the reference to your solution to obtain the camera from the editor/map in C++. this kind of pushed me in the right direction addressing my current problem.
I have a design where new entities will be created after the map has been loaded, so I wanted to be able to use the World::ForEachEntity....() functions from within a given, non-Leadwerks::Object class. This turned out to be somewhat difficult to figure out but I think I have a solution.
The code below is what I used as an experiment to get the entity class names printed on my console widget.
1.
SomeClass.h
... (prototype)
static void entityClass ( Leadwerks::Entity * entity,
Leadwerks::Object* extra ); // this is the declaration for a callback function, it has to be static
2.
SomeClass.cpp
... (using the callback function, maybe in the constructor, notice that the 'this' pointer for the classinstance is
cast to a leadwerks object pointer and passed in as a parameter)
world->ForEachEntityInAABBDo( aabb,
&entityClass,
(Leadwerks::Object *) this
);
3.
SomeClass.cpp
...
void SomeClass::entityClass(Leadwerks::Entity * entity,
Leadwerks::Object* extra) {
std::string str ( entity->GetClassName() );
cout << "Attack::entityClass: " << str << '\n';
((SomeClass *) extra)->getConsole()->addText( &str );
}
// Note: "ForEachEntityInAABBDo" seems to require that the
// callback function be static. This creates a really big problem
// if trying to get data back into a C++ class because a static function
// has no idea what class instance you are interested in. So, this solution
// casts the current class instance pointer (this) to a Leadwerks Object
// and then casts back to the cognate Class *. Seems to work but
// the assumption is that there is never a problem with pointer
// Implementations at runtime.
I was going take the time to confirm that the pointer thunks were ok using Valgrind, but I get so many reported memory leaks from within the engine, thus obsfucating my inspection, that I may wait till something breaks.
So, now that I can access basic data for entites created in the Leadwerks editor at anytime, it is on towards making use of their Lua scripts from C++.......
