--- Screen.pm 2007/08/05 15:24:22 152 +++ Screen.pm 2007/09/30 20:13:10 190 @@ -14,14 +14,49 @@ 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' ); + +=cut + +sub key_down {} + +=head2 key_up + + $self->key_up( 'a' ); + +=cut + +sub key_up {} + + +=head1 Architecture independent + +You don't need to override any of following function in your architecture, +but you might want to call them. =head2 open_screen @@ -41,22 +76,35 @@ 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 => $h, -depth => 16, -flags=>SDL_DOUBLEBUF | SDL_HWSURFACE | SDL_HWACCEL, ); #$app->grab_input( SDL_GRAB_QUERY ); $app->grab_input( SDL_GRAB_OFF ); - $app->title( ref($self) . ' ' . $self::VERSION ); + $app->title( ref($self) ); $self->app( $app ); 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 ); @@ -78,7 +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); } @@ -154,8 +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; @@ -196,8 +244,8 @@ $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 ); @@ -218,17 +266,9 @@ =cut my $pending_key; +my $key_active; my $run_for = 2000; -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}; -} - sub key_pressed { my $self = shift; @@ -238,14 +278,17 @@ my $event = $self->event || confess "no event?"; if ( ! $event->poll ) { + return $pending_key unless $self->can('session_event'); if ( my $h = $self->session_event('key_pressed') ) { my ( $key, $state ) = %$h; if ( $state ) { $pending_key = $key; - $key_down->{$key}++; + $self->key_down( $key ); + $key_active->{$key} = 1; } else { undef $pending_key; - $key_down->{$key} = 0; + $self->key_up( $key ); + $key_active->{$key} = 0; } } return $pending_key; @@ -259,7 +302,6 @@ if ($type == SDL_KEYDOWN) { $k = $event->key_name(); - $key_down->{$k}++; if ( $k eq 'escape' ) { $run_for = $self->cli; warn "will check event loop every $run_for cycles\n"; @@ -267,13 +309,16 @@ } else { warn "SDL_KEYDOWN ($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 ) { 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 }); - $key_down->{$up} = 0; undef $pending_key; } @@ -282,6 +327,28 @@ 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 @@ -307,6 +374,30 @@ } } +=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