[RESOLVED] Linker Error

Hello all, i would appreciate it if anyone could enlighten me on a linker error.

First off the error

Code:

---

Error        1        error LNK2019: unresolved external symbol "public: __thiscall ReachTop<class Character>::ReachTop<class Character>(class Character *)" (??0?$ReachTop@VCharacter@@@@QAE@PAVCharacter@@@Z) referenced in function "void __cdecl `dynamic initializer for 'gReachTop''(void)" (??__EgReachTop@@YAXXZ)        Main.obj        DecisionTest

---

Reach Top class inherits from Goal Class

Goal Class

Code:

---

#ifndef _GOAL_H
#define _GOAL_H

#include "Action.h"
#include <list>

template <class T>
class Goal
{
public:
        Goal(T* pOwner) : mpOwner(pOwner) {}
        virtual ~Goal() {}
       
        virtual float CalculateDesirability() = 0;
        virtual Action<T>* CreateAction() = 0;

protected:
        T* mpOwner;
};

template <class T>
struct GoalList
{
        typedef std::list<Goal<T>*> Type;
};

#endif

---

ReachTop Class Header

Code:

---

#ifndef _REACHTOP_H
#define _REACHTOP_H

#include <AI.h>
#include <SGE.h>

using namespace SGE;

template <typename T>
class ReachTop : public Goal<T>
{
public:
        ReachTop<T>(T* pOwner);
        virtual ~ReachTop() {}
       
        virtual float CalculateDesirability();
        virtual Action<T>* CreateAction();

protected:
        T* mpOwner;
};


#endif

---

Reachtop class cpp

Code:

---

#include "ReachTop.h"


template <typename T>
ReachTop<T>::ReachTop(T* pOwner)
: mpOwner(pOwner)
{

}

template <typename T>
float ReachTop<T>::CalculateDesirability()
{

}

template <typename T>
Action<T>* ReachTop<T>::CreateAction()
{

}

---

Code to create

Code:

---

Character* gCharacter = new Character(1, gWorld);
Goal<Character>* gReachTop = new ReachTop<Character>(gCharacter);

---

Any ideas? I can provide the character class and its inheritance aswell if you like.

http://forums.codeguru.com/showthrea...-template-code

Regards,

Paul McKenzie

I tried a inline file before and i just got

Code:

---

error C2512: 'Goal<T>' : no appropriate default constructor available
1>        with
1>        [
1>            T=Character
1>        ]
1>      *\reachtop.h(13) : while compiling class template member function 'ReachTop<T>::ReachTop(T *)'
1>        with
1>        [
1>            T=Character
1>        ]
1>        *\main.cpp(14) : see reference to class template instantiation 'ReachTop<T>' being compiled
1>        with
1>        [
1>            T=Character
1>        ]

---

instead

C2512 Since you've provided a constructor that takes a parameter, you must provide a default constructor as well (a constructor taking no parameters). The compiler will not automatically create one in these cases.

Viggy

I tried providing that already aswell. Same error.

[Edit]

Nevermind i added one to goal aswell and it fixed it. Thank you both.