--- Screen.pm 2007/08/05 19:44:20 161 +++ Screen.pm 2009/09/03 10:24:34 216 @@ -14,20 +14,28 @@ use Data::Dump qw/dump/; use Exporter 'import'; -our @EXPORT = qw'$white $black'; +our @EXPORT = qw'$white $black @flip'; use base qw(Class::Accessor Prefs); -__PACKAGE__->mk_accessors(qw(app event)); +__PACKAGE__->mk_accessors(qw(app event screen_width screen_height window_width window_height)); =head1 NAME -Screen - simulated 256*256 pixels monochrome screen using SDL +Screen - simulated monochrome screen using SDL =head1 Architecture dependent You may override following methods if you want to implement keyboard on each keypress event. Alternative is to use hook and trap memory access. +=head2 screen_width + +Width of emulated screen (256 by default) + +=head2 screen_height + +Height of emulated screen (256 by default) + =head2 key_down $self->key_down( 'a' ); @@ -68,14 +76,26 @@ warn "using default unscaled display\n"; } + $self->screen_width( 256 ) unless defined $self->screen_width; + $self->screen_height( 256 ) unless defined $self->screen_height; + + my $w = $self->screen_width * $self->scale + ( $self->show_mem ? 256 : 0 ); + $self->window_width( $w ); + + my $h = $self->screen_height; + # expand screen size to show whole 64k 256*256 memory map + $h = 256 if $self->show_mem && $h < 256; + $h *= $self->scale; + $self->window_height( $h ); + $app = SDL::App->new( - -width => 256 * $self->scale + ( $self->show_mem ? 256 : 0 ), - -height => 256 * $self->scale, + -width => $w, + -height => $h, -depth => 16, - -flags=>SDL_DOUBLEBUF | SDL_HWSURFACE | SDL_HWACCEL, +# -flags=>SDL_DOUBLEBUF | SDL_HWSURFACE | SDL_HWACCEL, ); #$app->grab_input( SDL_GRAB_QUERY ); - $app->grab_input( SDL_GRAB_OFF ); + $app->grab_input( SDL::App::SDL_GRAB_OFF ); $app->title( ref($self) ); $self->app( $app ); @@ -83,7 +103,8 @@ my $event = SDL::Event->new(); $self->event( $event ); - warn "# created SDL::App\n"; + warn "# created SDL::App with screen ", $self->screen_width, "x", $self->screen_height, " in window ", + $self->window_width, "x", $self->window_height, "\n"; } our $white = SDL::Color->new( -r => 0xff, -g => 0xff, -b => 0xff ); @@ -105,7 +126,7 @@ my $self = shift; my $offset = shift; my $x = $offset & 0xff; - $x += 256 * $self->scale; + $x += $self->screen_width * $self->scale; my $y = $offset >> 8; return ($x,$y); } @@ -181,8 +202,8 @@ my $scale = $self->scale || confess "no scale?"; - my $rect = 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 ); + my $rect = SDL::Rect->new( -x => 0, -y => 0, -width => $self->screen_width * $scale, -height => $self->screen_height * $scale ); + my $rect_screen = SDL::Rect->new( -x => 0, -y => 0, -width => $self->screen_width * $scale, -height => $self->screen_height * $scale ); if ( $scale > 1 ) { use SDL::Tool::Graphic; @@ -200,6 +221,7 @@ =head2 render_mem $self->render_mem( @mem ); + $self->render_mem( $memory_bytes ); =cut @@ -208,7 +230,12 @@ return unless $self->show_mem; - my $pixels = pack("C*", @_); + my $pixels; + if ( defined $# ) { + $pixels = pack("C*", @_); + } else { + $pixels = shift; + } my $vram = SDL::Surface->new( -width => 256, @@ -223,8 +250,8 @@ $vram->display_format; - my $rect = SDL::Rect->new( -x => 0, -y => 0, -width => 256, -height => 256 ); - my $rect_mem = SDL::Rect->new( -x => 256 * $self->scale, -y => 0, -width => 256, -height => 256 ); + my $rect = SDL::Rect->new( -x => 0, -y => 0, -width => $self->screen_width, -height => $self->window_height ); + my $rect_mem = SDL::Rect->new( -x => $self->screen_width * $self->scale, -y => 0, -width => 256, -height => 256 ); $vram->blit( $rect, $app, $rect_mem ); @@ -245,6 +272,7 @@ =cut my $pending_key; +my $key_active; my $run_for = 2000; sub key_pressed { @@ -262,9 +290,11 @@ if ( $state ) { $pending_key = $key; $self->key_down( $key ); + $key_active->{$key} = 1; } else { undef $pending_key; $self->key_up( $key ); + $key_active->{$key} = 0; } } return $pending_key; @@ -272,11 +302,11 @@ my $type = $event->type(); - exit if ($type == SDL_QUIT); + exit if ($type == SDL::App::SDL_QUIT); my $k = $pending_key; - if ($type == SDL_KEYDOWN) { + if ($type == SDL::App::SDL_KEYDOWN) { $k = $event->key_name(); if ( $k eq 'escape' ) { $run_for = $self->cli; @@ -286,12 +316,14 @@ warn "SDL_KEYDOWN ($type) = '$k'", $just_checking ? ' fake' : '', "\n"; $pending_key = $k; $self->key_down( $k ); + $key_active->{$k} = 1; $self->record_session('key_pressed', { $k => 1 }); } - } elsif ( $type == SDL_KEYUP ) { + } elsif ( $type == SDL::App::SDL_KEYUP ) { my $up = $event->key_name(); warn "SDL_KEYUP ($type) = '$up'", $just_checking ? ' fake' : '', "\n"; $self->key_up( $up ); + $key_active->{$up} = 0; $self->record_session('key_pressed', { $up => 0 }); undef $pending_key; } @@ -301,6 +333,28 @@ return $pending_key; } +=head2 key_active + +Is key currently pressed on keyboard or in session? + + $self->key_active( 'left shift', 'right shift', 'a' ); + +=cut + +sub key_active { + my $self = shift; + my @keys = @_; + confess "Regexp is no longer supported" if ref($_[0]) eq 'Regexp'; + + my $active = 0; + foreach my $key ( @keys ) { + $active++ if $key_active->{$key}; + } + + warn "## key_active(",dump(@keys),") = $active\n" if $active; + return $active; +} + =head2 loop Implement CPU run for C<$run_run> cycles inside SDL event loop @@ -326,6 +380,30 @@ } } +=head2 @flip + +Exported helper array used to flip bytes (from character roms for example) + + my $flipped = $flip[ $byte ]; + +=cut + +our @flip; + +foreach my $i ( 0 .. 255 ) { + 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; +} + =head1 SEE ALSO L is sample implementation using this module