error: no matching function for call to sth

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hi,
i want to use a method of a class in another class,but i get error below,whats the problem?

TIA

error: no matching function for call to ‘PositionInfo::PositionInfo()’

here is my code:

SQL

PositionInfo Pos;
double metr=Pos.GetBallDistToTeammate(5);///i got the error here

and PositionInfo.h class is:

SQL

PositionInfo(WorldState *pWorldState, InfoState *pInfoState);

and PositionInfo.cpp class is:

C#

const double & GetBallDistToTeammate(Unum unum) const { Assert(unum > 0); return GetBallDistToPlayer(unum); }

Posted 23-Mar-11 22:03pm

arashmobileboy

Updated 23-Mar-11 22:05pm

v2

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3 solutions

Solution 2

You must either:

define the contructor without arguments for the PositionInfo class (i.e. PositionInfo::PositionInfo()).

or

Use your already defined contructor in the Pos variable definition (e.g. PositionInfo Pos(NULL, NULL);).

Posted 23-Mar-11 22:18pm

CPallini

Solution 1

I think that perhaps you need to define a GetBallDistToTeammate function that takes an int, or cast the parameter to a Unum...

Posted 23-Mar-11 22:16pm

OriginalGriff

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Hans Dietrich · Accepted Answer · 2011-03-23T22:33:00

The class PositionInfo should be like this:

class PositionInfo
{
public:
    PositionInfo() {};   // replace with your constructor

    double GetBallDistToPlayer(Unum unum) const 
    { 
        return X;  // return your value here
    }

    double GetBallDistToTeammate(Unum unum) const
    {
        return GetBallDistToPlayer(unum);
    }
};