Make old text dissappear and new appear in sf::Text

[paupav]

So, I'm trying to display value that is constantly changing with sf::Text, but instead of changed value I get something like this (attachment).
Here is my code:

std::string ballSpeedString;
    std::stringstream convert;
    font.loadFromFile("LCD_Solid.ttf");
    ballSpeedText.setFont(font);

ballSpeedText.setString("");
    convert << (int)moveSpeed; //moveSpeed of the ball
    ballSpeedString = convert.str();
    ballSpeedText.setString(ballSpeedString);
 

[Laurent]

If you never clear your stringstream, text will accumulate in it. To clear a stringstream, call convert.str("").

Better: use a new stringstream instance for each conversion. Even better: put conversion code in a dedicated function. Even better if you compiler allows it: use std::to_string.

PS: you forgot the attachment.

[Jesper Juhl]

Also remember to clear() (and redraw) your screen between each display of the text. I don't know if you already do this (not enough code shown) just wanted to mention it.

[paupav]

Also remember to clear() (and redraw) your screen between each display of the text. I don't know if you already do this (not enough code shown) just wanted to mention it.

How bad is your opinion about me?

[BaneTrapper]

How bad is your opinion about me?

What is that supposed to mean? You don't know basics he was just noting something important.
But if he knew the ball was actually moving, he could observe there is no trail of ball movement 

EDIT::
This operator<< is appending data
http://www.cplusplus.com/reference/ostream/ostream/operator%3C%3C/

Code: [Select]

std::stringstream convert1(std::string("Content");
std::stringstream convert2(std::string("");
//Doing following operation
convert1 << (int)moveSpeed; //moveSpeed of the ball
convert2 << (int)moveSpeed; //moveSpeed of the ball
//Lead to convert1 and conver2 look like
conver1.str == "Content1";
conver2.str == "1";
You can use .str() instead of operator<<

Code: [Select]

std::stringStream S;
s.str() = std::string((int)moveSpeed); //moveSpeed of the ball
Another suggestion, use std::to_string

Code: [Select]

int i = 999888;
std::string str = std::to_string(i);//str would be "999888"


[paupav]

Try all.