/[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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M6502/Screen.pm revision 98 by dpavlin, Thu Aug 2 16:01:16 2007 UTC Screen.pm revision 161 by dpavlin, Sun Aug 5 19:44:20 2007 UTC
# Line 13  use SDL::Constants; Line 13  use SDL::Constants;
13  use Carp qw/confess/;  use Carp qw/confess/;
14  use Data::Dump qw/dump/;  use Data::Dump qw/dump/;
15    
16    use Exporter 'import';
17    our @EXPORT = qw'$white $black';
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));
21    
# Line 20  __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 42  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 54  sub open_screen { Line 86  sub open_screen {
86          warn "# created SDL::App\n";          warn "# created SDL::App\n";
87  }  }
88    
89  my $white       = SDL::Color->new( -r => 0xff, -g => 0xff, -b => 0xff );  our $white      = SDL::Color->new( -r => 0xff, -g => 0xff, -b => 0xff );
90  my $black       = SDL::Color->new( -r => 0x80, -g => 0x80, -b => 0x80 );  our $black      = SDL::Color->new( -r => 0x80, -g => 0x80, -b => 0x80 );
91    
92  my $red         = SDL::Color->new( -r => 0xff, -g => 0x00, -b => 0x00 );  my $red         = SDL::Color->new( -r => 0xff, -g => 0x00, -b => 0x00 );
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_screen = SDL::Rect->new( -x => 0, -y => 0, -width => 256, -height => 256 );  
 my $rect_mem = SDL::Rect->new( -x => 256, -y => 0, -width => 256, -height => 256 );  
   
 =head2 p  
   
  $screen->p( $x, $y, 1 );  
   
 =cut  
   
 sub p {  
         my $self = shift;  
   
         my ($x,$y,$w) = (@_);  
   
         warn "p($x,$y,$w)\n" if $self->debug;  
   
         my $scale = $self->scale;  
         my $rect = SDL::Rect->new(  
                 -height => $scale,  
                 -width  => $scale,  
                 -x      => $x * $scale,  
                 -y      => $y * $scale,  
         );  
   
         $app->fill( $rect, $w ? $white : $black );  
         $app->update( $rect );  
 }  
   
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 106  sub mem_xy { Line 110  sub mem_xy {
110          return ($x,$y);          return ($x,$y);
111  }  }
112    
 =head2 vram  
   
 Push byte to video memory and draw it  
   
   $screen->vram( $offset, $byte );  
   
 =cut  
   
 my $_vram_counter;  
   
 sub vram {  
         my ( $self, $offset, $byte ) = @_;  
         my $x = ( $offset % 32 ) << 3;  
         my $y = $offset >> 5;  
         my $mask = 1;  
         my $scale = $self->scale;  
   
         printf "## vram %04x %02x*%02x %02x\n", $offset, $x, $y, $byte if $self->trace;  
   
         foreach ( 0 .. 7 ) {  
                 my $on = $byte & $mask;  
                 if ( $scale == 1 ) {  
                         $app->pixel( $x + $_, $y, $on ? $white : $black );  
                 } else {  
                         $self->p($x + $_, $y, $on );  
                 }  
                 $mask = $mask << 1;  
         }  
   
         $app->sync if ( $_vram_counter++ % 10 == 0 );  
 }  
   
113  =head2 mmap_pixel  =head2 mmap_pixel
114    
115  Draw pixel in memory map  Draw pixel in memory map
# Line 176  sub sync { Line 148  sub sync {
148          $app->sync;          $app->sync;
149  }  }
150    
151  =head2 render  =head2 render_vram
152    
153  Render one frame of video ram  Render one frame of video ram
154    
155    $self->render( @video_memory );    $self->render_vram;
156    
157  =cut  =cut
158    
159  sub render {  sub render_vram {
160          my $self = shift;          my $self = shift;
161    
162          die "this function isn't supported if scale isn't 1" unless $self->scale == 1;          confess "please implement $self::render_vram";
163    }
164    
         my $pixels = pack("C*", @_);  
165    
166          my $vram = SDL::Surface->new(  =head2 render_frame
167                  -width => 256,  
168                  -height => 256,  Render one frame of video ram
169                  -depth => 1,    # 1 bit per pixel  
170                  -pitch => 32,   # bytes per line    $self->render_frame( $vram_sdl_surface );
171                  -from => $pixels,  
172          );  =cut
173          $vram->set_colors( 0, $black, $white, $red );  
174    sub render_frame {
175            my $self = shift;
176    
177            my $vram = shift;
178            confess "need SDL::Surface as argument" unless ref($vram) eq 'SDL::Surface';
179    
180          $vram->display_format;          $vram->display_format;
181    
182          my $rect = SDL::Rect->new( -x => 0, -y => 0, -width => 256, -height => 256 );          my $scale = $self->scale || confess "no scale?";
183          $vram->blit( $rect, $app, $rect_screen );  
184            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 );
186    
187            if ( $scale > 1 ) {
188                    use SDL::Tool::Graphic;
189                    # last parametar is anti-alias
190                    my $zoomed = SDL::Tool::Graphic->zoom( $vram, $self->scale, $self->scale, 1 );
191                    $zoomed->blit( $rect, $app, $rect_screen );
192            } else {
193                    $vram->blit( $rect, $app, $rect_screen );
194            }
195    
196          $app->sync;          $app->sync;
197  }  }
198    
199    
200  =head2 render_mem  =head2 render_mem
201    
202    $self->render_mem( @ram );    $self->render_mem( @mem );
203    
204  =cut  =cut
205    
# Line 233  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 259  sub key_pressed { Line 251  sub key_pressed {
251          my $self = shift;          my $self = shift;
252    
253          # don't take key, just pull event          # don't take key, just pull event
254          my $just_checking = shift;          my $just_checking = shift || 0;
   
         if ( defined($pending_key) ) {  
                 my $k = $pending_key;  
                 undef $pending_key unless $just_checking;  
                 return $k;  
         }  
255    
256          my $event = $self->event || confess "no event?";          my $event = $self->event || confess "no event?";
257    
258          $event->poll || return;          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 = $event->type();
274    
275          exit if ($type == SDL_QUIT);          exit if ($type == SDL_QUIT);
276    
277          my $k;          my $k = $pending_key;
278    
279          if ($type == SDL_KEYDOWN) {          if ($type == SDL_KEYDOWN) {
280                  $k = $event->key_name();                  $k = $event->key_name();
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";
284                            $pending_key = '~';
285                  } else {                  } else {
286                          warn "SDL_KEYDOWN ($type) = '$k'\n";                          warn "SDL_KEYDOWN ($type) = '$k'", $just_checking ? ' fake' : '', "\n";
287                          $pending_key = $k if $just_checking;                          $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 = $event->key_name();
293                  warn "SDL_KEYUP ($type) = '$up'\n";                  warn "SDL_KEYUP ($type) = '$up'", $just_checking ? ' fake' : '', "\n";
294                    $self->key_up( $up );
295                    $self->record_session('key_pressed', { $up => 0 });
296                    undef $pending_key;
297          }          }
298    
299          return $k;          warn "key_pressed = $pending_key\n" if ( $pending_key );
300    
301            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 $event = SDL::Event->new();          my $exec = shift;
319    
320            confess "need coderef as argument" unless ref($exec) eq 'CODE';
321            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);
326          }          }
327  }  }
328    
# Line 328  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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