Incrementing a number in a sf::String?

[epicasian]

Hey, I'm trying to have the HUD in my game say something like
"You have collected: X items" and with X being the amount of items collected. Is it possible to have and integer in sf::String and be able to increment that number? Like the way printf() does:
printf("You have collected %i items!", x);

Thanks in advance.

[Lupinius]

You need a std::stringstream. You can add variables to those like you do witch std::cout.

[vek]

Just create a simple string converter class, like this:

Code: [Select]


#include <sstream>

class StringConverter
{
public:

static int toInt(const std::string& str)
{
std::istringstream stream(str);
int value;
stream >> value;
return value;
}

static std::string toString(int value)
{
std::ostringstream stream;
stream << value;
return stream.str();
}
};


and an example how to use it:

Code: [Select]


int health = 100;
sf::String Text("Health: " + StringConverter::toString(health));


[Nexus]

I'd prefer something like that. It is especially useful to concatenate lots of values with different types:

Code: [Select]

#include <sstream>

class MakeString
{
   public:
      template <typename T>
      MakeString& operator<< (const T& value)
      {
         mStream << value;
         return *this;
      }
       
      operator std::string() const
      {
         return mStream.str();
      }
       
   private:
      std::ostringstream mStream;
};
Usage:

Code: [Select]

int main()
{
    int health = 100;
    sf::String str(MakeString() << "Health: " << health);
}