1 |
dpavlin |
29 |
package Screen; |
2 |
|
|
|
3 |
|
|
# Dobrica Pavlinusic, <dpavlin@rot13.org> 07/30/07 17:58:55 CEST |
4 |
|
|
|
5 |
|
|
use strict; |
6 |
|
|
use warnings; |
7 |
|
|
|
8 |
|
|
use SDL::App; |
9 |
|
|
use SDL::Rect; |
10 |
|
|
use SDL::Color; |
11 |
dpavlin |
75 |
use SDL::Constants; |
12 |
dpavlin |
29 |
|
13 |
dpavlin |
33 |
use Carp qw/confess/; |
14 |
dpavlin |
75 |
use Data::Dump qw/dump/; |
15 |
dpavlin |
33 |
|
16 |
dpavlin |
125 |
use Exporter 'import'; |
17 |
|
|
our @EXPORT = qw'$white $black'; |
18 |
|
|
|
19 |
dpavlin |
56 |
use base qw(Class::Accessor Prefs); |
20 |
dpavlin |
98 |
__PACKAGE__->mk_accessors(qw(app event)); |
21 |
dpavlin |
29 |
|
22 |
dpavlin |
55 |
=head1 NAME |
23 |
|
|
|
24 |
|
|
Screen - simulated 256*256 pixels monochrome screen using SDL |
25 |
|
|
|
26 |
dpavlin |
30 |
=head2 open_screen |
27 |
dpavlin |
29 |
|
28 |
|
|
Open simulated screen |
29 |
|
|
|
30 |
|
|
=cut |
31 |
|
|
|
32 |
|
|
our $app; |
33 |
|
|
|
34 |
dpavlin |
30 |
sub open_screen { |
35 |
dpavlin |
29 |
my $self = shift; |
36 |
dpavlin |
31 |
|
37 |
dpavlin |
56 |
$self->prefs; |
38 |
|
|
|
39 |
dpavlin |
31 |
if ( ! $self->scale ) { |
40 |
|
|
$self->scale( 1 ); |
41 |
|
|
warn "using default unscaled display\n"; |
42 |
|
|
} |
43 |
|
|
|
44 |
dpavlin |
29 |
$app = SDL::App->new( |
45 |
|
|
-width => 256 * $self->scale + ( $self->show_mem ? 256 : 0 ), |
46 |
|
|
-height => 256 * $self->scale, |
47 |
|
|
-depth => 16, |
48 |
dpavlin |
142 |
-flags=>SDL_DOUBLEBUF | SDL_HWSURFACE | SDL_HWACCEL, |
49 |
dpavlin |
29 |
); |
50 |
dpavlin |
75 |
#$app->grab_input( SDL_GRAB_QUERY ); |
51 |
|
|
$app->grab_input( SDL_GRAB_OFF ); |
52 |
dpavlin |
29 |
|
53 |
dpavlin |
98 |
$self->app( $app ); |
54 |
|
|
|
55 |
|
|
my $event = SDL::Event->new(); |
56 |
|
|
$self->event( $event ); |
57 |
|
|
|
58 |
dpavlin |
29 |
warn "# created SDL::App\n"; |
59 |
|
|
} |
60 |
|
|
|
61 |
dpavlin |
125 |
our $white = SDL::Color->new( -r => 0xff, -g => 0xff, -b => 0xff ); |
62 |
|
|
our $black = SDL::Color->new( -r => 0x80, -g => 0x80, -b => 0x80 ); |
63 |
dpavlin |
29 |
|
64 |
|
|
my $red = SDL::Color->new( -r => 0xff, -g => 0x00, -b => 0x00 ); |
65 |
|
|
my $green = SDL::Color->new( -r => 0x00, -g => 0xff, -b => 0x00 ); |
66 |
|
|
my $blue = SDL::Color->new( -r => 0x00, -g => 0x00, -b => 0xff ); |
67 |
|
|
|
68 |
|
|
=head2 mem_xy |
69 |
|
|
|
70 |
|
|
Helper to return x and y coordinates in memory map |
71 |
|
|
|
72 |
|
|
my ( $x,$y ) = $screen->mem_xy( $address ); |
73 |
|
|
|
74 |
|
|
=cut |
75 |
|
|
|
76 |
|
|
sub mem_xy { |
77 |
|
|
my $self = shift; |
78 |
|
|
my $offset = shift; |
79 |
|
|
my $x = $offset & 0xff; |
80 |
|
|
$x += 256 * $self->scale; |
81 |
|
|
my $y = $offset >> 8; |
82 |
|
|
return ($x,$y); |
83 |
|
|
} |
84 |
|
|
|
85 |
dpavlin |
32 |
=head2 mmap_pixel |
86 |
|
|
|
87 |
|
|
Draw pixel in memory map |
88 |
|
|
|
89 |
|
|
$self->mmap_pixel( $addr, $r, $g, $b ); |
90 |
|
|
|
91 |
|
|
=cut |
92 |
|
|
|
93 |
|
|
# keep accesses to memory |
94 |
|
|
my $_mem_stat; |
95 |
|
|
|
96 |
|
|
sub mmap_pixel { |
97 |
|
|
my ( $self, $addr, $r, $g, $b ) = @_; |
98 |
dpavlin |
33 |
return unless $self->show_mem && $self->app; |
99 |
dpavlin |
32 |
|
100 |
dpavlin |
33 |
my ( $x, $y ) = $self->mem_xy( $addr ); |
101 |
dpavlin |
41 |
warn sprintf "## mem %04x %02x %02x %02d*%02d\n", $addr, $r, $g, $x, $y if $self->debug; |
102 |
dpavlin |
32 |
|
103 |
dpavlin |
33 |
my $col = SDL::Color->new( -r => $r, -g => $g, -b => $b ); |
104 |
|
|
$self->app->pixel( $x, $y, $col ); |
105 |
dpavlin |
32 |
|
106 |
|
|
$_mem_stat++; |
107 |
|
|
if ( $_mem_stat % 1000 == 0 ) { |
108 |
dpavlin |
33 |
$self->app->sync; |
109 |
dpavlin |
32 |
} |
110 |
|
|
} |
111 |
|
|
|
112 |
dpavlin |
33 |
|
113 |
|
|
=head2 sync |
114 |
|
|
|
115 |
|
|
$self->sync; |
116 |
|
|
|
117 |
|
|
=cut |
118 |
|
|
|
119 |
|
|
sub sync { |
120 |
|
|
$app->sync; |
121 |
|
|
} |
122 |
|
|
|
123 |
dpavlin |
107 |
=head2 render_vram |
124 |
dpavlin |
73 |
|
125 |
dpavlin |
76 |
Render one frame of video ram |
126 |
|
|
|
127 |
dpavlin |
126 |
$self->render_vram; |
128 |
dpavlin |
73 |
|
129 |
|
|
=cut |
130 |
|
|
|
131 |
dpavlin |
125 |
sub render_vram { |
132 |
|
|
my $self = shift; |
133 |
dpavlin |
107 |
|
134 |
dpavlin |
125 |
confess "please implement $self::render_vram"; |
135 |
dpavlin |
107 |
} |
136 |
|
|
|
137 |
|
|
|
138 |
dpavlin |
125 |
=head2 render_frame |
139 |
dpavlin |
73 |
|
140 |
dpavlin |
125 |
Render one frame of video ram |
141 |
dpavlin |
106 |
|
142 |
dpavlin |
125 |
$self->render_frame( $vram_sdl_surface ); |
143 |
dpavlin |
106 |
|
144 |
dpavlin |
125 |
=cut |
145 |
dpavlin |
107 |
|
146 |
dpavlin |
125 |
sub render_frame { |
147 |
|
|
my $self = shift; |
148 |
|
|
|
149 |
|
|
my $vram = shift; |
150 |
|
|
confess "need SDL::Surface as argument" unless ref($vram) eq 'SDL::Surface'; |
151 |
|
|
|
152 |
dpavlin |
75 |
$vram->display_format; |
153 |
dpavlin |
73 |
|
154 |
dpavlin |
125 |
my $scale = $self->scale || confess "no scale?"; |
155 |
dpavlin |
73 |
|
156 |
dpavlin |
143 |
my $rect = SDL::Rect->new( -x => 0, -y => 0, -width => 256 * $scale, -height => 256 * $scale ); |
157 |
dpavlin |
121 |
my $rect_screen = SDL::Rect->new( -x => 0, -y => 0, -width => 256 * $scale, -height => 256 * $scale ); |
158 |
|
|
|
159 |
|
|
if ( $scale > 1 ) { |
160 |
|
|
use SDL::Tool::Graphic; |
161 |
|
|
# last parametar is anti-alias |
162 |
|
|
my $zoomed = SDL::Tool::Graphic->zoom( $vram, $self->scale, $self->scale, 1 ); |
163 |
|
|
$zoomed->blit( $rect, $app, $rect_screen ); |
164 |
|
|
} else { |
165 |
|
|
$vram->blit( $rect, $app, $rect_screen ); |
166 |
|
|
} |
167 |
|
|
|
168 |
dpavlin |
73 |
$app->sync; |
169 |
|
|
} |
170 |
|
|
|
171 |
dpavlin |
125 |
|
172 |
dpavlin |
76 |
=head2 render_mem |
173 |
|
|
|
174 |
dpavlin |
126 |
$self->render_mem( @mem ); |
175 |
dpavlin |
76 |
|
176 |
|
|
=cut |
177 |
|
|
|
178 |
|
|
sub render_mem { |
179 |
|
|
my $self = shift; |
180 |
|
|
|
181 |
|
|
return unless $self->show_mem; |
182 |
|
|
|
183 |
|
|
my $pixels = pack("C*", @_); |
184 |
|
|
|
185 |
|
|
my $vram = SDL::Surface->new( |
186 |
|
|
-width => 256, |
187 |
|
|
-height => 256, |
188 |
|
|
-depth => 8, # 1 bit per pixel |
189 |
|
|
-pitch => 256, # bytes per line |
190 |
|
|
-from => $pixels, |
191 |
|
|
-Rmask => 0xffff00ff, |
192 |
|
|
-Gmask => 0xffff00ff, |
193 |
|
|
-Bmask => 0xffff00ff, |
194 |
|
|
); |
195 |
|
|
|
196 |
|
|
$vram->display_format; |
197 |
|
|
|
198 |
dpavlin |
143 |
my $rect = SDL::Rect->new( -x => 0, -y => 0, -width => 256, -height => 256 ); |
199 |
|
|
my $rect_mem = SDL::Rect->new( -x => 256 * $self->scale, -y => 0, -width => 256, -height => 256 ); |
200 |
|
|
|
201 |
dpavlin |
76 |
$vram->blit( $rect, $app, $rect_mem ); |
202 |
|
|
|
203 |
|
|
$app->sync; |
204 |
|
|
} |
205 |
|
|
|
206 |
dpavlin |
98 |
=head2 key_pressed |
207 |
|
|
|
208 |
|
|
Check SDL event loop if there are any pending keys |
209 |
|
|
|
210 |
|
|
my $key = $self->key_pressed; |
211 |
|
|
|
212 |
|
|
if ( $self->key_pressed( 1 ) ) { |
213 |
|
|
# just to check other events, don't process |
214 |
|
|
# key |
215 |
|
|
} |
216 |
|
|
|
217 |
|
|
=cut |
218 |
|
|
|
219 |
|
|
my $pending_key; |
220 |
|
|
my $run_for = 2000; |
221 |
|
|
|
222 |
dpavlin |
103 |
my $key_down; |
223 |
|
|
|
224 |
|
|
sub key_down { |
225 |
|
|
my $self = shift; |
226 |
|
|
my $key = shift; |
227 |
|
|
warn "key_down($key) = ",$key_down->{$key}, "\n" if $self->debug; |
228 |
|
|
return $key_down->{$key}; |
229 |
|
|
} |
230 |
|
|
|
231 |
dpavlin |
98 |
sub key_pressed { |
232 |
|
|
my $self = shift; |
233 |
|
|
|
234 |
|
|
# don't take key, just pull event |
235 |
dpavlin |
101 |
my $just_checking = shift || 0; |
236 |
dpavlin |
98 |
|
237 |
|
|
my $event = $self->event || confess "no event?"; |
238 |
|
|
|
239 |
dpavlin |
99 |
$event->poll || return $pending_key; |
240 |
dpavlin |
98 |
|
241 |
|
|
my $type = $event->type(); |
242 |
|
|
|
243 |
|
|
exit if ($type == SDL_QUIT); |
244 |
|
|
|
245 |
dpavlin |
99 |
my $k = $pending_key; |
246 |
dpavlin |
98 |
|
247 |
|
|
if ($type == SDL_KEYDOWN) { |
248 |
|
|
$k = $event->key_name(); |
249 |
dpavlin |
103 |
$key_down->{$k}++; |
250 |
dpavlin |
98 |
if ( $k eq 'escape' ) { |
251 |
|
|
$run_for = $self->cli; |
252 |
|
|
warn "will check event loop every $run_for cycles\n"; |
253 |
dpavlin |
101 |
$pending_key = '~'; |
254 |
dpavlin |
98 |
} else { |
255 |
dpavlin |
101 |
warn "SDL_KEYDOWN ($type) = '$k'", $just_checking ? ' fake' : '', "\n"; |
256 |
|
|
$pending_key = $k; |
257 |
dpavlin |
98 |
} |
258 |
|
|
} elsif ( $type == SDL_KEYUP ) { |
259 |
|
|
my $up = $event->key_name(); |
260 |
dpavlin |
103 |
$key_down->{$up} = 0; |
261 |
dpavlin |
101 |
warn "SDL_KEYUP ($type) = '$up'", $just_checking ? ' fake' : '', "\n"; |
262 |
dpavlin |
99 |
undef $pending_key; |
263 |
dpavlin |
98 |
} |
264 |
|
|
|
265 |
dpavlin |
99 |
warn "key_pressed = $pending_key\n" if $pending_key; |
266 |
|
|
|
267 |
|
|
return $pending_key; |
268 |
dpavlin |
98 |
} |
269 |
|
|
|
270 |
dpavlin |
96 |
=head2 loop |
271 |
|
|
|
272 |
dpavlin |
126 |
Implement CPU run for C<$run_run> cycles inside SDL event loop |
273 |
dpavlin |
96 |
|
274 |
dpavlin |
126 |
$self->loop( sub { |
275 |
|
|
my $run_for = shift; |
276 |
|
|
CPU::exec( $run_for ); |
277 |
|
|
$self->render_vram; |
278 |
|
|
} ); |
279 |
|
|
|
280 |
dpavlin |
96 |
=cut |
281 |
|
|
|
282 |
|
|
sub loop { |
283 |
|
|
my $self = shift; |
284 |
dpavlin |
126 |
my $exec = shift; |
285 |
|
|
|
286 |
|
|
confess "need coderef as argument" unless ref($exec) eq 'CODE'; |
287 |
dpavlin |
96 |
my $event = SDL::Event->new(); |
288 |
|
|
|
289 |
|
|
while ( 1 ) { |
290 |
dpavlin |
98 |
$self->key_pressed( 1 ); |
291 |
dpavlin |
126 |
$exec->($run_for); |
292 |
dpavlin |
96 |
} |
293 |
|
|
} |
294 |
|
|
|
295 |
dpavlin |
55 |
=head1 SEE ALSO |
296 |
|
|
|
297 |
|
|
L<Orao> is sample implementation using this module |
298 |
|
|
|
299 |
|
|
=head1 AUTHOR |
300 |
|
|
|
301 |
|
|
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
302 |
|
|
|
303 |
|
|
=head1 COPYRIGHT & LICENSE |
304 |
|
|
|
305 |
|
|
Copyright 2007 Dobrica Pavlinusic, All Rights Reserved. |
306 |
|
|
|
307 |
|
|
This program is free software; you can redistribute it and/or modify it |
308 |
|
|
under the same terms as Perl itself. |
309 |
|
|
|
310 |
|
|
=cut |
311 |
dpavlin |
32 |
1; |