I've been programming a small text adventure game using SDL2 recently and have come across an issue with line wrapping. I am using TTF_RenderText_Blended_Wrapped() to render my strings, and this gives me some nicely wrapped lines. But The line height is an issue, the lines seem squished together, and letters like 'jqg' overlap with letters like 'tli'.
Does anyone know if there is a way to change the line height? TTF_RenderText_Blended_Wrapped() still isn't even in the documentation for SDL_ttf. Should I just write my own text wrapping function?
The font size is 16pt, styling is TTF_STYLE_BOLD, and the font can be found here. The code below should reproduce the error, there is almost no error checking though, use at your own risk. Here is the output of the code: 
#include <stdio.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_ttf.h>
int main(int argc, char *argv[]) {
SDL_Window *gui;
SDL_Surface *screen, *text;
SDL_Event ev;
TTF_Font *font;
int running = 1;
const char *SAMPLETEXT = "This is an example of my problem, for most lines it works fine, albeit it looks a bit tight. But for any letters that \"hang\" below the line, there is a chance of overlapping with the letters below. This isn\'t the end of the world, but I think it makes for rather cluttered text.\n\nNotice the p and k on line 1/2, and the g/t on 2/3 and 3/4.";
// init SDL/TTF
SDL_Init(SDL_INIT_EVERYTHING);
TTF_Init();
// Open and set up font
font = TTF_OpenFont("Anonymous.ttf", 16);
if(font == NULL) {
fprintf(stderr, "Error: font could not be opened.\n");
return 0;
}
TTF_SetFontStyle(font, TTF_STYLE_BOLD);
// Create GUI
gui = SDL_CreateWindow("Example", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
640, 480, SDL_WINDOW_SHOWN);
// Grab GUI surface
screen = SDL_GetWindowSurface(gui);
// Clear screen black
SDL_FillRect(screen, NULL, 0);
// Draw some text to screen
SDL_Color color = {0xff, 0xff, 0xff, 0xff};
text = TTF_RenderText_Blended_Wrapped(font, SAMPLETEXT, color, screen->w);
SDL_BlitSurface(text, NULL, screen, NULL);
while(running) { // Main loop
while(SDL_PollEvent(&ev)) {
switch(ev.type){
case SDL_QUIT:
running = 0;
break;
}
}
SDL_UpdateWindowSurface(gui); // Refresh window
SDL_Delay(20); // Delay loop
}
// Destroy resources and quit
TTF_CloseFont(font);
TTF_Quit();
SDL_FreeSurface(text);
SDL_DestroyWindow(gui);
SDL_Quit();
return 0;
}
