Question

我在sf::Text和sf::Font时遇到问题。文字不想画。 std::wstring具有正确的文本值。 sf::Font完全加载。这是我的代码：

sf::Font mainGameFont;
void drawText( const std::wstring& str, const int size, const float xposition, const float yposition, sf::RenderWindow& window, const sf::Font& mainGameFont )
{
    std::wcout << str << std::endl;
    source.setFont( mainGameFont );
    source.setColor( color );
    source.setCharacterSize( size );
    source.setString( str );
    source.setPosition( xposition, yposition );
    window.draw(source);
}
int main()
{
    sf::RenderWindow window(sf::VideoMode(1024, 768), "test");
    mainGameFont.loadFromFile("futura.ttf");
    ...
    //Other code, calling drawText(...), etc
    ...
}

有人可以帮帮我吗？抱歉我的英语不好。

更新：这段代码不起作用！

#include <string>
#include <iostream>
#include "SFML/Graphics.hpp"

sf::Font mainGameFont;
sf::Text source;
void drawText( const std::wstring& str, const int size, const float xposition, const float yposition, sf::RenderWindow& window, sf::Font& mainGameFont )
{
    mainGameFont.loadFromFile("futura.ttf");
    std::wcout << str << std::endl;
    source.setFont( mainGameFont );
    source.setColor( sf::Color::White );
    source.setCharacterSize( size );
    std::cout << "stat1" << std::endl;
    source.setString( str );
    source.setPosition( xposition, yposition );
    window.draw(source);
    std::cout << "ok" << std::endl;
}
int main()
{
    sf::RenderWindow window(sf::VideoMode(600, 400), "Test");
    while (window.isOpen())
    {
        window.clear(sf::Color::Black);
        drawText(L"Ok", 20, 90, 90, window, mainGameFont);
        window.display();
    }
        return 0;
}

Answer 1

好的，首先，你的整个代码都是糟糕的编程实践：

你声明：

sf::Font mainGameFont;
sf::Text source;

作为全局变量，但是通过在函数中使用完全相同的变量名来违反阴影规则：

void drawText( const std::wstring& str, const int size, const float xposition, const float yposition, sf::RenderWindow& window, sf::Font& mainGameFont )

主要通过重新宣布：

sf::Font& mainGameFont

然后你疯狂地传递函数已经可以看到的全局变量...作为函数的引用：

drawText(L"Ok", 20, 90, 90, window, mainGameFont);

您还错误地使用了保留关键字＆＃39; size＆＃39;：

source.setCharacterSize( size );

你不能使用名称。

#include <string>
#include <iostream>
#include <SFML/Graphics.hpp>

sf::Text source;
sf::Font mainGameFont;

void drawText( const sf::String &str, const int Size, const float xposition, const float yposition, sf::RenderWindow& window)
{
    source.setString(str);
    source.setCharacterSize(Size); //only the lower cased word size is reserved. A capital S fixes that.
    source.setPosition(xposition,yposition);
    window.draw(source);
}

int main()
{
    sf::RenderWindow window(sf::VideoMode(600, 400), "Test");

    //This should only be called ONCE, not at every pass.
    mainGameFont.loadFromFile("futura.ttf");
    source.setFont(mainGameFont);

    while (window.isOpen())
    {
        window.clear(sf::Color::Black);
        drawText("Ok", 20, 90, 90, window);
        window.display();
    }

    return 0;
}

重新写作。

绘制sf :: Text时遇到麻烦。 C ++

1 个答案: