unresolved external symbol

[PenguinBuddha]

I'm getting the following error:
1>ExampleAIModule.obj : error LNK2001: unresolved external symbol "public: int __thiscall ExampleAIModule::getTop(class BWTA::Polygon)" (?getTop@ExampleAIModule@@QAEHVPolygon@BWTA@@@Z)

for the following method:

/**
* Method: getTop
* Takes a polygon and returns the lowest y value it touches
*/
int getTop(BWTA::Polygon subject) {
	
	// Note: the lower y values are "higher" on the map
	int top = mapHeight - 1;

	for(BWTA::Polygon::const_iterator i = subject.begin(); 
		i != subject.end(); i++) {
		
		if((*i).y() < top)
			top = (*i).y();
	}
	return top;
}

Any idea on the cause?

[anonymous23323124]

Have you defined the Polygon class? Also, what is the ExampleAIModule class? Is this function defined inside it?

[PenguinBuddha]

The polygon class is part of BWTA, which is imported in ExampleAIModule.h, this method is defined in the ExampleAIModule class.

[anonymous23323124]

Another idea: is the code you have above copied from inside the definition of the class ExampleAIModule, or is it in a cpp file?

If it is in a separate cpp file then you need to do this:
int ExampleAIModule::getTop(BWTA::Polygon subject) {
(etc)
since the getTop function is supposed to be a class member, I assume.

Hope this helps :)

[PenguinBuddha]

That was it! Thanks for the help.

[anonymous23323124]

No problem - it's an easy mistake to make. Just be sure you understand why it should be there :)