Keyboard input trought allegro http://www.allegro.cc/forums/view/615157 Allegro.cc Forum Thread matthew@allegro.cc (Matthew Leverton) Wed, 04 Mar 2015 12:01:29 +0000

Hello. I have a simple question:
How can you input text trought allegro?
If you didn't understand what i was meaning, imagine that in my game the user has to write a name for his game caracter. I need my game to detect when a key is pressed and if that key is between A - Z and a - z the program to add that caracter to a string varible. I was thinking of using the event system and somehow detect the keyboard keycode, but I don't know if the keycode is like the codes in the ASCII table. I want to use 100% allegro beause I can port it to other platforms.

Any help would be welcome!

]]> no-reply@allegro.cc (TeachMeHowToPro) Mon, 02 Mar 2015 23:18:02 +0000

The easiest way is to find a gui library you like (there's a few). Or you can use the ALLEGRO_EVENT_KEY_CHAR and the unichar field to get the unicode character (and use the allegro unicode string api).

]]> no-reply@allegro.cc (Thomas Fjellstrom) Mon, 02 Mar 2015 23:23:08 +0000

This is some 'orrible code that works from an old game of mine,

#SelectExpand
1const char * a5_grab_input(int ytextpos) 2{ 3int happen=0; 4char *edittext=malloc (sizeof (char) * 128); 5int caret = 0; 6int running=1; 7al_flush_event_queue(event_queue); 8 9al_draw_filled_rectangle(disp_data.width/5,ytextpos-20,disp_data.width/5*4,ytextpos+50,al_map_rgb(0,0,0)); 10al_draw_rectangle(disp_data.width/5,ytextpos-20,disp_data.width/5*4,ytextpos+50,al_map_rgb(150,150,150),3); 11al_flip_display(); 12 do 13 { 14 al_init_timeout(&timeout, 0.06); 15 bool get_event = al_wait_for_event_until(event_queue, &ev, &timeout); 16 17 if (get_event && ev.type==ALLEGRO_EVENT_KEY_CHAR){ 18 int newkey = ev.keyboard.unichar; 19 char ASCII = newkey & 0xff; 20 char scancode = ev.keyboard.keycode; 21 22 ///* a character key was pressed; add it to the string */ 23 if(scancode == ALLEGRO_KEY_ENTER) running=0; 24 else 25 if (scancode==ALLEGRO_KEY_SPACE) ; 26 else 27 if(scancode == ALLEGRO_KEY_BACKSPACE ){ 28 if (caret > 0) caret--; 29 happen=1; 30 edittext[caret] = '\0'; 31 } 32 else 33 if(ASCII >= 32 && ASCII <= 126){ 34 if (ASCII>=97 AND ASCII <=122 AND (caret==0 OR edittext[caret-1]==' ')) ASCII-=32; 35 if(caret < 20 - 1){ 36 edittext[caret] = ASCII; 37 caret++; 38 edittext[caret] = '\0'; 39 happen=1; 40 } 41 } 42 } 43 44 if (happen==1){ 45 al_draw_filled_rectangle(disp_data.width/5,ytextpos-20,disp_data.width/5*4,ytextpos+50,al_map_rgb(0,0,0)); 46 al_draw_rectangle(disp_data.width/5,ytextpos-20,disp_data.width/5*4,ytextpos+50,al_map_rgb(150,150,150),3); 47 al_draw_text(font,al_map_rgb(250,250,250),disp_data.width/2, ytextpos,ALLEGRO_ALIGN_CENTER,edittext); 48 al_flip_display(); 49 } 50 happen=0; 51 } 52 while(running==1); 53 54 55 //If no name - 0 characters inputed then return random name 56 if (caret==0){ 57 switch (rand()%3){ 58 case 0: 59 strcpy (edittext, "Vasya Pupkin"); 60 break; 61 case 1: 62 strcpy (edittext, "Joe Bloggs"); 63 break; 64 default: 65 strcpy (edittext, "Luther Blissett"); 66 break; 67 } 68 } 69 70return edittext; 71}

]]> no-reply@allegro.cc (Yodhe23) Tue, 03 Mar 2015 00:43:18 +0000

That really is 'orrible! :o Never share that snippet with anyone ever again! :-X

]]> no-reply@allegro.cc (StevenVI) Tue, 03 Mar 2015 01:13:14 +0000

'Orrible but it works, I guess it's the hacker in me.

]]> no-reply@allegro.cc (Yodhe23) Tue, 03 Mar 2015 02:14:35 +0000

Can anyone recommend a GUI library? I need it to work on Android and IOS also

]]> no-reply@allegro.cc (TeachMeHowToPro) Tue, 03 Mar 2015 15:09:55 +0000

My GUI API Agui is used in the popular game Factorio: http://www.factorio.com/ and I have been using it for years.

I am currently porting my game to ios and in doing so I am adding some touch compatibility. I have obj-c classes to do keyboard support in ios too.

There's also:
GWEN https://github.com/garrynewman/GWEN
TGUI2 http://nooskewl.ca/more/open-source/

]]> no-reply@allegro.cc (jmasterx) Wed, 04 Mar 2015 12:01:29 +0000