/[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 125 by dpavlin, Sat Aug 4 15:09:44 2007 UTC revision 165 by dpavlin, Mon Aug 6 07:04:40 2007 UTC
# Line 12  use SDL::Constants; Line 12  use SDL::Constants;
12    
13  use Carp qw/confess/;  use Carp qw/confess/;
14  use Data::Dump qw/dump/;  use Data::Dump qw/dump/;
 use M6502 qw'@mem';  
15    
16  use Exporter 'import';  use Exporter 'import';
17  our @EXPORT = qw'$white $black';  our @EXPORT = qw'$white $black @flip';
18    
19  use base qw(Class::Accessor Prefs);  use base qw(Class::Accessor Prefs);
20  __PACKAGE__->mk_accessors(qw(app event));  __PACKAGE__->mk_accessors(qw(app event));
# Line 24  __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 46  sub open_screen { Line 72  sub open_screen {
72                  -width  => 256 * $self->scale + ( $self->show_mem ? 256 : 0 ),                  -width  => 256 * $self->scale + ( $self->show_mem ? 256 : 0 ),
73                  -height => 256 * $self->scale,                  -height => 256 * $self->scale,
74                  -depth  => 16,                  -depth  => 16,
75                    -flags=>SDL_DOUBLEBUF | SDL_HWSURFACE | SDL_HWACCEL,
76          );          );
77          #$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) );
80    
81          $self->app( $app );          $self->app( $app );
82    
# Line 65  my $red                = SDL::Color->new( -r => 0xff, Line 93  my $red                = SDL::Color->new( -r => 0xff,
93  my $green       = SDL::Color->new( -r => 0x00, -g => 0xff, -b => 0x00 );  my $green       = SDL::Color->new( -r => 0x00, -g => 0xff, -b => 0x00 );
94  my $blue        = SDL::Color->new( -r => 0x00, -g => 0x00, -b => 0xff );  my $blue        = SDL::Color->new( -r => 0x00, -g => 0x00, -b => 0xff );
95    
 my $rect_mem = SDL::Rect->new( -x => 256, -y => 0, -width => 256, -height => 256 );  
   
96  =head2 mem_xy  =head2 mem_xy
97    
98  Helper to return x and y coordinates in memory map  Helper to return x and y coordinates in memory map
# Line 126  sub sync { Line 152  sub sync {
152    
153  Render one frame of video ram  Render one frame of video ram
154    
155    $self->render_vram( @video_memory );    $self->render_vram;
156    
157  =cut  =cut
158    
# Line 155  sub render_frame { Line 181  sub render_frame {
181    
182          my $scale = $self->scale || confess "no scale?";          my $scale = $self->scale || confess "no scale?";
183    
184          my $rect                = SDL::Rect->new( -x => 0, -y => 0, -width => 256 * $scale, -height => 256 * $scale );          my $rect        = SDL::Rect->new( -x => 0, -y => 0, -width => 256 * $scale, -height => 256 * $scale );
185          my $rect_screen = SDL::Rect->new( -x => 0, -y => 0, -width => 256 * $scale, -height => 256 * $scale );          my $rect_screen = SDL::Rect->new( -x => 0, -y => 0, -width => 256 * $scale, -height => 256 * $scale );
186    
187          if ( $scale > 1 ) {          if ( $scale > 1 ) {
# Line 173  sub render_frame { Line 199  sub render_frame {
199    
200  =head2 render_mem  =head2 render_mem
201    
202    $self->render_mem( @ram );    $self->render_mem( @mem );
203    
204  =cut  =cut
205    
# Line 197  sub render_mem { Line 223  sub render_mem {
223    
224          $vram->display_format;          $vram->display_format;
225    
226          my $rect = SDL::Rect->new( -x => 0, -y => 0, -width => 256, -height => 256 );          my $rect     = SDL::Rect->new( -x => 0, -y => 0, -width => 256, -height => 256 );
227            my $rect_mem = SDL::Rect->new( -x => 256 * $self->scale, -y => 0, -width => 256, -height => 256 );
228    
229          $vram->blit( $rect, $app, $rect_mem );          $vram->blit( $rect, $app, $rect_mem );
230    
231          $app->sync;          $app->sync;
# Line 219  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 236  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 = $event->type();
274    
# Line 246  sub key_pressed { Line 278  sub key_pressed {
278    
279          if ($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 $run_for cycles\n";
# Line 254  sub key_pressed { Line 285  sub key_pressed {
285                  } else {                  } else {
286                          warn "SDL_KEYDOWN ($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          warn "key_pressed = $pending_key\n" if $pending_key;          warn "key_pressed = $pending_key\n" if ( $pending_key );
300    
301          return $pending_key;          return $pending_key;
302  }  }
303    
304  =head2 loop  =head2 loop
305    
306  Implement SDL event loop  Implement CPU run for C<$run_run> cycles inside SDL event loop
307    
308      $self->loop( sub {
309            my $run_for = shift;
310            CPU::exec( $run_for );
311            $self->render_vram;
312      } );
313    
314  =cut  =cut
315    
316  sub loop {  sub loop {
317          my $self = shift;          my $self = shift;
318            my $exec = shift;
319    
320            confess "need coderef as argument" unless ref($exec) eq 'CODE';
321          my $event = SDL::Event->new();          my $event = SDL::Event->new();
322    
         MAIN_LOOP:  
323          while ( 1 ) {          while ( 1 ) {
324                  $self->key_pressed( 1 );                  $self->key_pressed( 1 );
325                  M6502::exec($run_for);                  $exec->($run_for);
                 $self->render_vram( @mem[ 0x6000 .. 0x7fff ] );  
326          }          }
327  }  }
328    
329    # helper array to flip bytes for display
330    our @flip;
331    
332    foreach my $i ( 0 .. 255 ) {
333            my $t = 0;
334            $i & 0b00000001 and $t = $t | 0b10000000;
335            $i & 0b00000010 and $t = $t | 0b01000000;
336            $i & 0b00000100 and $t = $t | 0b00100000;
337            $i & 0b00001000 and $t = $t | 0b00010000;
338            $i & 0b00010000 and $t = $t | 0b00001000;
339            $i & 0b00100000 and $t = $t | 0b00000100;
340            $i & 0b01000000 and $t = $t | 0b00000010;
341            $i & 0b10000000 and $t = $t | 0b00000001;
342            #warn "$i = $t\n";
343            $flip[$i] = $t;
344    }
345    
346  =head1 SEE ALSO  =head1 SEE ALSO
347    
348  L<Orao> is sample implementation using this module  L<Orao> is sample implementation using this module
# Line 301  This program is free software; you can r Line 359  This program is free software; you can r
359  under the same terms as Perl itself.  under the same terms as Perl itself.
360    
361  =cut  =cut
362    
363  1;  1;
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