Text Box

Text Box

Antone333

Member #15,545

March 2014

Is there any way of doing a \n for a new line in al_draw_textf or something along those lines?

I want to use this for all of the dialog or event explanation in the game I am working on. Is there any better way of doing what i want?

#SelectExpand
  1
  2#include <allegro5/allegro.h>
  3#include <allegro5/allegro_ttf.h>
  4#include <allegro5/allegro_font.h>
  5#include <allegro5/allegro_image.h>
  6
  7void TextBox()
  8{
  9    ALLEGRO_DISPLAY *TextBoxDisplay;
 10    ALLEGRO_BITMAP *TextBox = NULL;
 11    ALLEGRO_FONT *font = al_load_ttf_font("tahoma.ttf", 16, 0 );
 12    
 13    TextBoxDisplay = al_create_display(800, 896);
 14    
 15    TextBox = al_load_bitmap("TextBox.png");
 16    
 17    al_draw_bitmap(TextBox, 320, 544, 0);
 18    
 19    al_draw_textf(font, al_map_rgb(153, 76, 0), 336, 560, 0, "Hi there, my name is Joey I will be your guide through the");
 20    al_draw_textf(font, al_map_rgb(153, 76, 0), 336, 576, 0, "tutorial.");
 21
 22    al_draw_textf(font, al_map_rgb(153, 76, 0), 336, 576 + 32, 0, "Press Any Key To Continue...");
 23    
 24    //User input for any key to continue or given options according to content
 25    
 26    al_flip_display();
 27}
 28
 29int main()
 30{
 31    al_init();
 32    al_init_image_addon();
 33    al_init_font_addon();
 34    al_init_ttf_addon();
 35    
 36    TextBox();
 37    
 38    al_rest(5.0);
 39    
 40    return 0;
 41}

Arthur Kalliokoski

Second in Command

February 2005

There are plenty of functions in the string library to do this, or you could copy the characters to a scratch buffer one at a time yourself until you found the newline, then store a 0, draw the text in the buffer using a variable for the y component, then reset the destination pointer in the buffer, lather, rinse repeat.

They all watch too much MSNBC... they get ideas.

Antone333

Member #15,545

March 2014

What if i did something sort of along the lines of a tilemap?

could i make a character array that fits the text box that i have and then just write each line that way and then have the program draw from a bitmap each letter?

Arthur Kalliokoski

Second in Command

February 2005

If you're going to do that, why not just put the text on an image with a paint program and just blit the image?

They all watch too much MSNBC... they get ideas.

jmasterx

Member #11,410

October 2009

I have a class that does a lot of this for you:
https://github.com/jmasterx/Agui/blob/master/src/Agui/ResizableText.cpp

It breaks on newlines, but also word wraps if a certain width is reached.

Agui GUI API -> https://github.com/jmasterx/Agui
Agui 0.2 Release Thread -> https://www.allegro.cc/forums/thread/612830

Edgar Reynaldo