/[VRac]/Screen.pm
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revision 125 by dpavlin, Sat Aug 4 15:09:44 2007 UTC revision 183 by dpavlin, Sun Sep 30 19:31:14 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 screen_width screen_height));
21    
22  =head1 NAME  =head1 NAME
23    
24  Screen - simulated 256*256 pixels monochrome screen using SDL  Screen - simulated 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 screen_width
32    
33    Width of emulated screen (256 by default)
34    
35    =head2 screen_height
36    
37    Height of emulated screen (256 by default)
38    
39    =head2 key_down
40    
41      $self->key_down( 'a' );
42    
43    =cut
44    
45    sub key_down {}
46    
47    =head2 key_up
48    
49      $self->key_up( 'a' );
50    
51    =cut
52    
53    sub key_up {}
54    
55    
56    =head1 Architecture independent
57    
58    You don't need to override any of following function in your architecture,
59    but you might want to call them.
60    
61  =head2 open_screen  =head2 open_screen
62    
# Line 42  sub open_screen { Line 76  sub open_screen {
76                  warn "using default unscaled display\n";                  warn "using default unscaled display\n";
77          }          }
78    
79            $self->screen_width( 256 ) unless defined $self->screen_width;
80            $self->screen_height( 256 ) unless defined $self->screen_height;
81    
82          $app = SDL::App->new(          $app = SDL::App->new(
83                  -width  => 256 * $self->scale + ( $self->show_mem ? 256 : 0 ),                  -width  => $self->screen_width * $self->scale + ( $self->show_mem ? 256 : 0 ),
84                  -height => 256 * $self->scale,                  -height => $self->screen_height * $self->scale,
85                  -depth  => 16,                  -depth  => 16,
86                    -flags=>SDL_DOUBLEBUF | SDL_HWSURFACE | SDL_HWACCEL,
87          );          );
88          #$app->grab_input( SDL_GRAB_QUERY );          #$app->grab_input( SDL_GRAB_QUERY );
89          $app->grab_input( SDL_GRAB_OFF );          $app->grab_input( SDL_GRAB_OFF );
90            $app->title( ref($self) );
91    
92          $self->app( $app );          $self->app( $app );
93    
94          my $event = SDL::Event->new();          my $event = SDL::Event->new();
95          $self->event( $event );          $self->event( $event );
96    
97          warn "# created SDL::App\n";          warn "# created SDL::App with screen ", $self->screen_width, "x", $self->screen_height, "\n";
98  }  }
99    
100  our $white      = SDL::Color->new( -r => 0xff, -g => 0xff, -b => 0xff );  our $white      = SDL::Color->new( -r => 0xff, -g => 0xff, -b => 0xff );
# Line 65  my $red                = SDL::Color->new( -r => 0xff, Line 104  my $red                = SDL::Color->new( -r => 0xff,
104  my $green       = SDL::Color->new( -r => 0x00, -g => 0xff, -b => 0x00 );  my $green       = SDL::Color->new( -r => 0x00, -g => 0xff, -b => 0x00 );
105  my $blue        = SDL::Color->new( -r => 0x00, -g => 0x00, -b => 0xff );  my $blue        = SDL::Color->new( -r => 0x00, -g => 0x00, -b => 0xff );
106    
 my $rect_mem = SDL::Rect->new( -x => 256, -y => 0, -width => 256, -height => 256 );  
   
107  =head2 mem_xy  =head2 mem_xy
108    
109  Helper to return x and y coordinates in memory map  Helper to return x and y coordinates in memory map
# Line 79  sub mem_xy { Line 116  sub mem_xy {
116          my $self = shift;          my $self = shift;
117          my $offset = shift;          my $offset = shift;
118          my $x = $offset & 0xff;          my $x = $offset & 0xff;
119          $x += 256 * $self->scale;          $x += $self->screen_width * $self->scale;
120          my $y = $offset >> 8;          my $y = $offset >> 8;
121          return ($x,$y);          return ($x,$y);
122  }  }
# Line 126  sub sync { Line 163  sub sync {
163    
164  Render one frame of video ram  Render one frame of video ram
165    
166    $self->render_vram( @video_memory );    $self->render_vram;
167    
168  =cut  =cut
169    
# Line 155  sub render_frame { Line 192  sub render_frame {
192    
193          my $scale = $self->scale || confess "no scale?";          my $scale = $self->scale || confess "no scale?";
194    
195          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 => $self->screen_width * $scale, -height => $self->screen_height * $scale
196          my $rect_screen = SDL::Rect->new( -x => 0, -y => 0, -width => 256 * $scale, -height => 256 * $scale );          );
197            my $rect_screen = SDL::Rect->new( -x => 0, -y => 0, -width => $self->screen_width * $scale, -height => $self->screen_height * $scale );
198    
199          if ( $scale > 1 ) {          if ( $scale > 1 ) {
200                  use SDL::Tool::Graphic;                  use SDL::Tool::Graphic;
# Line 173  sub render_frame { Line 211  sub render_frame {
211    
212  =head2 render_mem  =head2 render_mem
213    
214    $self->render_mem( @ram );    $self->render_mem( @mem );
215    
216  =cut  =cut
217    
# Line 197  sub render_mem { Line 235  sub render_mem {
235    
236          $vram->display_format;          $vram->display_format;
237    
238          my $rect = SDL::Rect->new( -x => 0, -y => 0, -width => 256, -height => 256 );          my $rect     = SDL::Rect->new( -x => 0, -y => 0, -width => $self->screen_width, -height => $self->screen_height );
239            my $rect_mem = SDL::Rect->new( -x => $self->screen_width * $self->scale, -y => 0, -width => 256, -height => 256 );
240    
241          $vram->blit( $rect, $app, $rect_mem );          $vram->blit( $rect, $app, $rect_mem );
242    
243          $app->sync;          $app->sync;
# Line 217  Check SDL event loop if there are any pe Line 257  Check SDL event loop if there are any pe
257  =cut  =cut
258    
259  my $pending_key;  my $pending_key;
260    my $key_active;
261  my $run_for = 2000;  my $run_for = 2000;
262    
 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};  
 }  
   
263  sub key_pressed {  sub key_pressed {
264          my $self = shift;          my $self = shift;
265    
# Line 236  sub key_pressed { Line 268  sub key_pressed {
268    
269          my $event = $self->event || confess "no event?";          my $event = $self->event || confess "no event?";
270    
271          $event->poll || return $pending_key;          if ( ! $event->poll ) {
272                    return $pending_key unless $self->can('session_event');
273                    if ( my $h = $self->session_event('key_pressed') ) {
274                            my ( $key, $state ) = %$h;
275                            if ( $state ) {
276                                    $pending_key = $key;
277                                    $self->key_down( $key );
278                                    $key_active->{$key} = 1;
279                            } else {
280                                    undef $pending_key;
281                                    $self->key_up( $key );
282                                    $key_active->{$key} = 0;
283                            }
284                    }
285                    return $pending_key;
286            }
287    
288          my $type = $event->type();          my $type = $event->type();
289    
# Line 246  sub key_pressed { Line 293  sub key_pressed {
293    
294          if ($type == SDL_KEYDOWN) {          if ($type == SDL_KEYDOWN) {
295                  $k = $event->key_name();                  $k = $event->key_name();
                 $key_down->{$k}++;  
296                  if ( $k eq 'escape' ) {                  if ( $k eq 'escape' ) {
297                          $run_for = $self->cli;                          $run_for = $self->cli;
298                          warn "will check event loop every $run_for cycles\n";                          warn "will check event loop every $run_for cycles\n";
# Line 254  sub key_pressed { Line 300  sub key_pressed {
300                  } else {                  } else {
301                          warn "SDL_KEYDOWN ($type) = '$k'", $just_checking ? ' fake' : '', "\n";                          warn "SDL_KEYDOWN ($type) = '$k'", $just_checking ? ' fake' : '', "\n";
302                          $pending_key = $k;                          $pending_key = $k;
303                            $self->key_down( $k );
304                            $key_active->{$k} = 1;
305                            $self->record_session('key_pressed', { $k => 1 });
306                  }                  }
307          } elsif ( $type == SDL_KEYUP ) {          } elsif ( $type == SDL_KEYUP ) {
308                  my $up = $event->key_name();                  my $up = $event->key_name();
                 $key_down->{$up} = 0;  
309                  warn "SDL_KEYUP ($type) = '$up'", $just_checking ? ' fake' : '', "\n";                  warn "SDL_KEYUP ($type) = '$up'", $just_checking ? ' fake' : '', "\n";
310                    $self->key_up( $up );
311                    $key_active->{$up} = 0;
312                    $self->record_session('key_pressed', { $up => 0 });
313                  undef $pending_key;                  undef $pending_key;
314          }          }
315    
316          warn "key_pressed = $pending_key\n" if $pending_key;          warn "key_pressed = $pending_key\n" if ( $pending_key );
317    
318          return $pending_key;          return $pending_key;
319  }  }
320    
321    =head2 key_active
322    
323    Is key currently pressed on keyboard or in session?
324    
325      $self->key_active( 'left shift', 'right shift', 'a' );
326    
327    =cut
328    
329    sub key_active {
330            my $self = shift;
331            my @keys = @_;
332            confess "Regexp is no longer supported" if ref($_[0]) eq 'Regexp';
333    
334            my $active = 0;
335            foreach my $key ( @keys ) {
336                    $active++ if $key_active->{$key};
337            }
338    
339            warn "## key_active(",dump(@keys),") = $active\n" if $active;
340            return $active;
341    }
342    
343  =head2 loop  =head2 loop
344    
345  Implement SDL event loop  Implement CPU run for C<$run_run> cycles inside SDL event loop
346    
347      $self->loop( sub {
348            my $run_for = shift;
349            CPU::exec( $run_for );
350            $self->render_vram;
351      } );
352    
353  =cut  =cut
354    
355  sub loop {  sub loop {
356          my $self = shift;          my $self = shift;
357            my $exec = shift;
358    
359            confess "need coderef as argument" unless ref($exec) eq 'CODE';
360          my $event = SDL::Event->new();          my $event = SDL::Event->new();
361    
         MAIN_LOOP:  
362          while ( 1 ) {          while ( 1 ) {
363                  $self->key_pressed( 1 );                  $self->key_pressed( 1 );
364                  M6502::exec($run_for);                  $exec->($run_for);
                 $self->render_vram( @mem[ 0x6000 .. 0x7fff ] );  
365          }          }
366  }  }
367    
368    # helper array to flip bytes for display
369    our @flip;
370    
371    foreach my $i ( 0 .. 255 ) {
372            my $t = 0;
373            $i & 0b00000001 and $t = $t | 0b10000000;
374            $i & 0b00000010 and $t = $t | 0b01000000;
375            $i & 0b00000100 and $t = $t | 0b00100000;
376            $i & 0b00001000 and $t = $t | 0b00010000;
377            $i & 0b00010000 and $t = $t | 0b00001000;
378            $i & 0b00100000 and $t = $t | 0b00000100;
379            $i & 0b01000000 and $t = $t | 0b00000010;
380            $i & 0b10000000 and $t = $t | 0b00000001;
381            #warn "$i = $t\n";
382            $flip[$i] = $t;
383    }
384    
385  =head1 SEE ALSO  =head1 SEE ALSO
386    
387  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 398  This program is free software; you can r
398  under the same terms as Perl itself.  under the same terms as Perl itself.
399    
400  =cut  =cut
401    
402  1;  1;
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