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Stompy9999

Question regarding SDL_ttf

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Okay, So I'm currently making a Turn based Strategy game with C++ and SDL, and I'm using SDL_ttf for text output. I'm going to make a briefing screen before each level that tells the player info about that level. Now before I go about doing this, I have a question. Does SDL_ttf recognize the newline character when it is drawing text? I'm wondering because I'm going to be reading the briefing text in from a text file, and I what all of the word wrapping in there automaticly. So does SDL_ttf recognize newline characters, or will I have to write my own word wrapping routine? Thanks for any help, and sorry if this is a dumb question.[grin]

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Natively, I don't believe so. But you can always parse the string for '\n' and upon detection, render two different SDL_surfaces and then stick them together in a single surface. This is how my video programmer did it just this morning, but I haven't tested it myself yet. (We use OpenGL with our SDL app, so your mileage may vary)


//-----------------------------------------------------------------------------
// DrawText: non unicode version
//-----------------------------------------------------------------------------

bool GameVideo::DrawText(const string &txt, float x, float y)
{
if(txt.empty())
{
if(VIDEO_DEBUG)
cerr << "VIDEO ERROR: tried to draw empty text string!" << endl;
}


TTF_Font *font = _fontMap[_currentFont];

_PushContext();

if(font)
{
int32 lineSkip = TTF_FontLineSkip(_fontMap[GetFont()]);
// use a temporary string since the code changes it
string text = txt;

do
{
size_t newlinePos = text.find("\n");
if(newlinePos != string::npos)
{
if(!_DrawTextHelper(text.substr(0, newlinePos).c_str(), NULL, x, y))
{
_PopContext();
return false;
}
text = text.substr(newlinePos+1, text.length()-newlinePos);
y -= lineSkip;
}
else
{
if(!_DrawTextHelper(text.c_str(), NULL, x, y))
{
_PopContext();
return false;
}
text = "";
}
} while(text != "");
}

_PopContext();

return true;
}



You can view the rest of the video engine in our CVS here. The code is GPL'ed. The snippet above I grabbed from the file `text.cpp`


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