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[SelfTitled]

Hi

I'm getting an error when trying to compile code in XCode:
"No matching function for call to 'caspian::World:IntersectionTest(caspian::Vector2&, float*, <unnamed>::entity_output&)'"

this function I am attempting to call is declared like so:

Code:

			
class World : public CodeSection
{
	public:
        template <typename OutputIterator>
	void IntersectionTest(const Vector2& screen, float accuracy, OutputIterator iter) const
	{
		// do something
	}
};

and called from code like the following:

Code:

WorldManager::GetCurrentWorld()->IntersectionTest(point, accuracy, entity_outputted(found, entity));

"entity_outputted" is a struct defined in the same file that the function call is made, but in an anonymous namespace.

I can compile and run the code fine in VS but not in xcode.

Any idea what the problem is and how it may be resolved?

Thanks

EDIT:
A little more code

Code:

namespace
{
	struct entity_outputted
	{
		entity_outputted(bool& found, caspian::Entity* entity)
		: found_ (&found)
		, entity_(entity)
		{
		}

		entity_outputted& operator*()     { return *this; }
		entity_outputted& operator++()    { return *this; }
		entity_outputted& operator++(int) { return *this; }

		void operator=(const caspian::intersection_result& result)
		{
			if (result.entity_ == entity_)
				*found_ = true;
		}

	private:
		bool*            found_;
		caspian::Entity* entity_;
	};
}

namespace caspian
{
	void IsEntityUnderPoint(CScriptProcessor* processor)
	{
		int     entity_id = processor->GetStackInt    (-2);
		Vector2 point     = processor->GetStackVector2(-1);
		float   accuracy  = processor->GetStackFloat  (0);
		CSCRIPTPROCESSOR_HALTCHECK

		Entity* entity = ResourceManager::Get()->GetResource<Entity>(entity_id);
		CSCRIPTENTITY_EXISTCHECK(entity, entity_id)

		bool found = false;
		WorldManager::GetCurrentWorld()->IntersectionTest(point, accuracy, entity_outputted(found, entity));

		processor->GetFunctionReturnVariable()->SetValue(Variable::INT_TYPE, found);
	}
}

[Average Software]

I can probably help you, but I need to see more code than that.

[Average Software]

I don't see anything wrong offhand, but without being able to compile it, it's tough to say.  I did notice this:

The error message says the first parameter is a caspian::Vector2&, but the function takes a const caspian::Vector2&.  Is that a typo in your post?

Also, what namespace is the World class in?

[SelfTitled]

That was the error I got, if I remove the const from the parameter I get the same error.

The World class is in the caspian namespace.

Thanks

[Average Software]

The only thing I can think of is that you missed an #include somewhere, and the compiler hasn't seen the definition of World at the point where you are calling the function.  That would explain why it's getting the signature wrong.

[OneSadCookie]

Two things strike me here:

1) in your error message it says you're passing a float* for parameter two, but at the call site it looks to be clearly a float.  Did you typo the error message?

2) in your error message it says you're passing an entity_output& for parameter three, but your class is called entity_outputted.  Did you just rename the class between your first post and your second?

[BorisTheBrave]

Average - you should be ashamed to be beaten by a man-baby like that. 

[Average Software]

Average - you should be ashamed to be beaten by a man-baby like that. 

If that's the OneSadCookie I think it is, he's an established authority on Mac game programming.  No shame whatsoever.

[SelfTitled]

Thanks guys, I had made a mistake typing the error out.

The problem was that (as OneSadCookie suggested) I was passing a float* for the second parameter when a float was expected. It seems that a change had be made to the codebase between VS build and the xcode build which is why it built on VS still.

Thanks very much for all your help.