-Once in a while .... (set_event_filter) +Quick Game for Toronto Perl Mongers
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-Once in a while
-Things just work!
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-So I have been hacking for a while on SDL::Events::set_event_filter. The code below is an example usage. The magic behind this is here
+So I am preparing a presentation of the new SDL perl for February's Toronto Perl Mongers meeting. What better way to so off SDL perl then with a game?
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-Once in a while
-Things just work!
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Beep ... Boop
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-So I have been hacking for a while on SDL::Events::set_event_filter. The code below is an example usage. The magic behind this is here
+So I am preparing a presentation of the new SDL perl for February's Toronto Perl Mongers meeting. What better way to so off SDL perl then with a game?
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1 #!/usr/bin/perl -w - 2 use strict; - 3 use warnings; - 4 use SDL v2.3; #Require the redesign branch - 5 use SDL::Video; - 6 use SDL::Event; - 7 use SDL::Events; - 8 - 9 SDL::init(SDL_INIT_VIDEO); -10 my $display = SDL::Video::set_video_mode(640,480,32, SDL_SWSURFACE ); -11 my $event = SDL::Event->new(); -12 -13 #This filters out all ActiveEvents -14 my $filter = sub { -15 my ($e, $type) = ($_[0], $_[0]->type); -16 if($type == SDL_ACTIVEEVENT){ return 0 } -17 elsif($type == SDL_MOUSEBUTTONDOWN && $e->button_button == 1){ return 0 } -18 else { return 1; } -19 }; -20 -21 SDL::Events::set_event_filter($filter); -22 -23 while(1) -24 { -25 -26 SDL::Events::pump_events(); -27 if(SDL::Events::poll_event($event)) -28 { -29 -30 if( $event->type == SDL_ACTIVEEVENT) -31 { -32 print "Hello Mouse!!!\n" if ($event->active_gain && ($event->active_state == SDL_APPMOUSEFOCUS) ); -33 print "Bye Mouse!!!\n" if (!$event->active_gain && ($event->active_state == SDL_APPMOUSEFOCUS) ); -34 } -35 if( $event->type == SDL_MOUSEBUTTONDOWN) -36 { -37 my ($x, $y, $but ) = ($event->button_x, $event->button_y, $event->button_button); -38 warn "$but CLICK!!! at $x and $y \n"; -39 } -40 -41 last if($event->type == SDL_QUIT); -42 } -43 } -44 SDL::quit();
Tinker with $filter and look at perldoc lib/SDL/pods/Event.pod.
Have fun,
--yapgh
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