KEY_ENTER_PAD "UP" message

KEY_ENTER_PAD "UP" message

stonecold

August 2006

if its possible to catch KEY_ENTER_PAD "UP" message
thx

Mark Oates

Member #1,146

March 2001

KEY_8_PAD?

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Rampage

Member #3,035

December 2002

Your question is not very clear. I understand that you want to respond to the event of the ENTER key of the numerical PAD being released, like an on_key_up event, is that right?

This is what I usually do in that case:

1 
2static int key_state[KEY_MAX];
3 
4int is_key_released(int key_index) {
5    int released = 0;
6 
7    if (key[key_index]) {
8        // key is pressed, store its state and return 0
9        key_state[key_index] = 1;
10    } else {
11        // key is released, check the stored state,
12        // if it's zero, the key was never pressed,
13        // if it's one, the key was pressed in the previous iteration, so it was just released
14        released = key_state[key_index];
15        // reset the stored state
16        key_state[key_index] = 0;
17    }
18 
19    return released;
20}
21 
22// use it to handle the event:
23if (is_key_released(KEY_PAD_ENTER)) {
24    on_key_pad_enter_released();
25}

-R

Timorg

Member #2,028

March 2002

Have a look at the keyboard call back functions, particularly 'keyboard_lowlevel_callback'

http://www.allegro.cc/manual/api/keyboard-routines/keyboard_lowlevel_callback

or if if you are in your main program loop try something like this

1#include <allegro.h>
2 
3int main(int argc, char **argv)
4{
5  allegro_init();
6  install_keyboard();
7 
8  set_gfx_mode(GFX_AUTODETECT, 640, 480, 0, 0);
9 
10  int key_down = false;
11  int down_count = 0;
12  int up_count = 0;
13 
14  while(!key[KEY_ESC])
15  {
16    if (key[KEY_ENTER_PAD])
17    {
18      if (!key_down)
19      {
20        /* ran once when the key is pressed down */
21        down_count++;
22        key_down = true;
23      }
24    }
25    else
26    {
27      if (key_down)
28      {
29        /* ran once when the key is released */
30        up_count++;
31        key_down = false;
32      }
33    }
34 
35    textprintf_ex(screen, font, 0, 0, makecol(255,255,255), makecol(0,0,0), "Times KEY_ENTER_PAD has been pushed:   %d", down_count);
36    textprintf_ex(screen, font, 0, 8, makecol(255,255,255), makecol(0,0,0), "Times KEY_ENTER_PAD has been released: %d", up_count);
37 
38 
39  }
40 
41}
42END_OF_MAIN()

Edit: doh I was too slow

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