/[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 124 by dpavlin, Sat Aug 4 14:13:28 2007 UTC revision 126 by dpavlin, Sat Aug 4 15:43:28 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/;
15  use M6502 qw'@mem';  
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));
# Line 55  sub open_screen { Line 57  sub open_screen {
57          warn "# created SDL::App\n";          warn "# created SDL::App\n";
58  }  }
59    
60  my $white       = SDL::Color->new( -r => 0xff, -g => 0xff, -b => 0xff );  our $white      = SDL::Color->new( -r => 0xff, -g => 0xff, -b => 0xff );
61  my $black       = SDL::Color->new( -r => 0x80, -g => 0x80, -b => 0x80 );  our $black      = SDL::Color->new( -r => 0x80, -g => 0x80, -b => 0x80 );
62    
63  my $red         = SDL::Color->new( -r => 0xff, -g => 0x00, -b => 0x00 );  my $red         = SDL::Color->new( -r => 0xff, -g => 0x00, -b => 0x00 );
64  my $green       = SDL::Color->new( -r => 0x00, -g => 0xff, -b => 0x00 );  my $green       = SDL::Color->new( -r => 0x00, -g => 0xff, -b => 0x00 );
# Line 64  my $blue       = SDL::Color->new( -r => 0x00, Line 66  my $blue       = SDL::Color->new( -r => 0x00,
66    
67  my $rect_mem = SDL::Rect->new( -x => 256, -y => 0, -width => 256, -height => 256 );  my $rect_mem = SDL::Rect->new( -x => 256, -y => 0, -width => 256, -height => 256 );
68    
 =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 );  
 }  
   
69  =head2 mem_xy  =head2 mem_xy
70    
71  Helper to return x and y coordinates in memory map  Helper to return x and y coordinates in memory map
# Line 148  sub sync { Line 125  sub sync {
125    
126  Render one frame of video ram  Render one frame of video ram
127    
128    $self->render_vram( @video_memory );    $self->render_vram;
129    
130  =cut  =cut
131    
132  my @flip;  sub render_vram {
133            my $self = shift;
134    
135  foreach my $i ( 0 .. 255 ) {          confess "please implement $self::render_vram";
         my $t = 0;  
         $i & 0b00000001 and $t = $t | 0b10000000;  
         $i & 0b00000010 and $t = $t | 0b01000000;  
         $i & 0b00000100 and $t = $t | 0b00100000;  
         $i & 0b00001000 and $t = $t | 0b00010000;  
         $i & 0b00010000 and $t = $t | 0b00001000;  
         $i & 0b00100000 and $t = $t | 0b00000100;  
         $i & 0b01000000 and $t = $t | 0b00000010;  
         $i & 0b10000000 and $t = $t | 0b00000001;  
         #warn "$i = $t\n";  
         $flip[$i] = $t;  
136  }  }
137    
138    
139  sub render_vram {  =head2 render_frame
         my $self = shift;  
140    
141          return unless $self->booted;  Render one frame of video ram
142    
143          confess "no data?" unless (@_);    $self->render_frame( $vram_sdl_surface );
         confess "screen size not 256*256/8 but ",($#_+1) unless (($#_+1) == (256*256/8));  
144    
145          my $pixels = pack("C*", map { $flip[$_] } @_);  =cut
146    
147    sub render_frame {
148            my $self = shift;
149    
150            my $vram = shift;
151            confess "need SDL::Surface as argument" unless ref($vram) eq 'SDL::Surface';
152    
         my $vram = SDL::Surface->new(  
                 -width => 256,  
                 -height => 256,  
                 -depth => 1,    # 1 bit per pixel  
                 -pitch => 32,   # bytes per line  
                 -from => $pixels,  
         );  
         $vram->set_colors( 0, $black, $white, $red );  
153          $vram->display_format;          $vram->display_format;
154    
155          my $scale = $self->scale;          my $scale = $self->scale || confess "no scale?";
156    
157          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 );
158          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 );
# Line 206  sub render_vram { Line 169  sub render_vram {
169          $app->sync;          $app->sync;
170  }  }
171    
172    
173  =head2 render_mem  =head2 render_mem
174    
175    $self->render_mem( @ram );    $self->render_mem( @mem );
176    
177  =cut  =cut
178    
# Line 304  sub key_pressed { Line 268  sub key_pressed {
268    
269  =head2 loop  =head2 loop
270    
271  Implement SDL event loop  Implement CPU run for C<$run_run> cycles inside SDL event loop
272    
273      $self->loop( sub {
274            my $run_for = shift;
275            CPU::exec( $run_for );
276            $self->render_vram;
277      } );
278    
279  =cut  =cut
280    
281  sub loop {  sub loop {
282          my $self = shift;          my $self = shift;
283          my $event = SDL::Event->new();          my $exec = shift;
284    
285            confess "need coderef as argument" unless ref($exec) eq 'CODE';
286            my $event = SDL::Event->new();
287    
         MAIN_LOOP:  
288          while ( 1 ) {          while ( 1 ) {
289                  $self->key_pressed( 1 );                  $self->key_pressed( 1 );
290                  M6502::exec($run_for);                  $exec->($run_for);
                 $self->render_vram( @mem[ 0x6000 .. 0x7fff ] );  
291          }          }
292  }  }
293    
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