/[VRac]/Screen.pm
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 145 by dpavlin, Sun Aug 5 13:27:27 2007 UTC revision 161 by dpavlin, Sun Aug 5 19:44:20 2007 UTC
# Line 23  __PACKAGE__->mk_accessors(qw(app event)) Line 23  __PACKAGE__->mk_accessors(qw(app event))
23    
24  Screen - simulated 256*256 pixels monochrome screen using SDL  Screen - simulated 256*256 pixels monochrome screen using SDL
25    
26    =head1 Architecture dependent
27    
28    You may override following methods if you want to implement keyboard on each
29    keypress event. Alternative is to use <read> hook and trap memory access.
30    
31    =head2 key_down
32    
33      $self->key_down( 'a' );
34    
35    =cut
36    
37    sub key_down {}
38    
39    =head2 key_up
40    
41      $self->key_up( 'a' );
42    
43    =cut
44    
45    sub key_up {}
46    
47    
48    =head1 Architecture independent
49    
50    You don't need to override any of following function in your architecture,
51    but you might want to call them.
52    
53  =head2 open_screen  =head2 open_screen
54    
55  Open simulated screen  Open simulated screen
# Line 49  sub open_screen { Line 76  sub open_screen {
76          );          );
77          #$app->grab_input( SDL_GRAB_QUERY );          #$app->grab_input( SDL_GRAB_QUERY );
78          $app->grab_input( SDL_GRAB_OFF );          $app->grab_input( SDL_GRAB_OFF );
79          $app->title( ref($self) . ' ' . $self::VERSION );          $app->title( ref($self) );
80    
81          $self->app( $app );          $self->app( $app );
82    
# Line 220  Check SDL event loop if there are any pe Line 247  Check SDL event loop if there are any pe
247  my $pending_key;  my $pending_key;
248  my $run_for = 2000;  my $run_for = 2000;
249    
 my $key_down;  
   
 sub key_down {  
         my $self = shift;  
         my $key = shift;  
         warn "key_down($key) = ",$key_down->{$key}, "\n" if $self->debug;  
         return $key_down->{$key};  
 }  
   
250  sub key_pressed {  sub key_pressed {
251          my $self = shift;          my $self = shift;
252    
# Line 237  sub key_pressed { Line 255  sub key_pressed {
255    
256          my $event = $self->event || confess "no event?";          my $event = $self->event || confess "no event?";
257    
258          $event->poll || return $pending_key;          if ( ! $event->poll ) {
259                    return $pending_key unless $self->can('session_event');
260                    if ( my $h = $self->session_event('key_pressed') ) {
261                            my ( $key, $state ) = %$h;
262                            if ( $state ) {
263                                    $pending_key = $key;
264                                    $self->key_down( $key );
265                            } else {
266                                    undef $pending_key;
267                                    $self->key_up( $key );
268                            }
269                    }
270                    return $pending_key;
271            }
272    
273          my $type = $event->type();          my $type = $event->type();
274    
# Line 247  sub key_pressed { Line 278  sub key_pressed {
278    
279          if ($type == SDL_KEYDOWN) {          if ($type == SDL_KEYDOWN) {
280                  $k = $event->key_name();                  $k = $event->key_name();
                 $key_down->{$k}++;  
281                  if ( $k eq 'escape' ) {                  if ( $k eq 'escape' ) {
282                          $run_for = $self->cli;                          $run_for = $self->cli;
283                          warn "will check event loop every $run_for cycles\n";                          warn "will check event loop every $run_for cycles\n";
# Line 255  sub key_pressed { Line 285  sub key_pressed {
285                  } else {                  } else {
286                          warn "SDL_KEYDOWN ($type) = '$k'", $just_checking ? ' fake' : '', "\n";                          warn "SDL_KEYDOWN ($type) = '$k'", $just_checking ? ' fake' : '', "\n";
287                          $pending_key = $k;                          $pending_key = $k;
288                            $self->key_down( $k );
289                            $self->record_session('key_pressed', { $k => 1 });
290                  }                  }
291          } elsif ( $type == SDL_KEYUP ) {          } elsif ( $type == SDL_KEYUP ) {
292                  my $up = $event->key_name();                  my $up = $event->key_name();
                 $key_down->{$up} = 0;  
293                  warn "SDL_KEYUP ($type) = '$up'", $just_checking ? ' fake' : '', "\n";                  warn "SDL_KEYUP ($type) = '$up'", $just_checking ? ' fake' : '', "\n";
294                    $self->key_up( $up );
295                    $self->record_session('key_pressed', { $up => 0 });
296                  undef $pending_key;                  undef $pending_key;
297          }          }
298    
299          if ( $pending_key ) {          warn "key_pressed = $pending_key\n" if ( $pending_key );
                 warn "key_pressed = $pending_key\n";  
                 $self->record_session('key_pressed', $pending_key);  
         }  
300    
301          return $pending_key;          return $pending_key;
302  }  }
# Line 312  This program is free software; you can r Line 342  This program is free software; you can r
342  under the same terms as Perl itself.  under the same terms as Perl itself.
343    
344  =cut  =cut
345    
346  1;  1;
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