Csnnot Instaniate Abstract Class - State Machine

[teckygamer]

Hi, im currently try vitek's statemachine so that i can play if it and understand it, however i have come across a error,

main.cpp(85) : error C2259: 'CGame' : cannot instantiate abstract class
1> due to following members:
1> 'bool irr::IEventReceiver::OnEvent(const irr::SEvent &)' : is abstract
1> c:\users\bakara\desktop\myirrlichtapp\include\ieventreceiver.h(441) : see declaration of 'irr::IEventReceiver::OnEvent'

This refers to

Code: Select all

class CGame	: public IEventReceiver	, public CStateGraphT<CGame, SEvent>
{
public:
......
....
...
....
....
	//! adapt from irrlicht event handling to ours
	  virtual bool OnEvent(SEvent event)
	{
		return onEvent(event);
	}

Im relatively new to irrlicht, any help would be much appreciated. This is my understanding, The OnEvent function in the my CGame class is overriding the OnEvent function in IEventReceiver. However the compiler see it as abstract.

[Acki]

1> due to following members:
1> 'bool irr::IEventReceiver::OnEvent(const irr::SEvent &)' : is abstract

this message tells you exactly what's wrong !!!
look what it tells about the function and see what your's looks like !!!
also check the api for the declaration...

[teckygamer]

Ty i have been looking at it for so long that i missed that fact it suppose to be a constant