On Mon, 2004-03-29 at 23:33, chromatic wrote:
With the improved object system in place, I've been porting the existing
SDL Parrot bindings.
Here's a quick status update. With helpful suggestions from Jens and
Allison, I've just finished porting the existing files in examples/sdl
to the new libraries. They're a lot nicer.
I've still some documentation to write (as well as a long list of rough
edges to smooth), but I'll fix that up shortly and check in some new
code. To whet your appetites, here's the new version of
examples/sdl/move_parrot_logo.imc.
Suggestions always welcome.
-- c
=head1 TITLE
move_parrot_logo.imc - move a Parrot logo with the SDL Parrot bindings
=head1 SYNOPSIS
To run this file, be in the Parrot directory and run the following command:
$ parrot examples/sdl/move_parrot_logo.imc
$
=cut
.sub _main @MAIN
load_bytecode library/SDL/App.imc
load_bytecode library/SDL/Color.imc
load_bytecode library/SDL/Rect.imc
load_bytecode library/SDL/Image.imc
load_bytecode library/SDL/Sprite.imc
load_bytecode library/SDL/EventHandler.imc
load_bytecode library/SDL/Event.imc
.local pmc app_args
new app_args, .PerlHash
set app_args[ 'width' ], 640
set app_args[ 'height' ], 480
set app_args[ 'bpp'], 0
set app_args[ 'flags' ], 0
.local pmc app
.local int app_type
find_type app_type, 'SDL::App'
app = new app_type
.local pmc main_screen
main_screen = app.'BUILD'( app_args )
.local pmc black
.local int color_type
find_type color_type, 'SDL::Color'
black = new color_type
.local pmc color_args
color_args = new PerlHash
color_args[ 'r' ] = 0
color_args[ 'g' ] = 0
color_args[ 'b' ] = 0
black.'_new'( color_args )
.local pmc image
.local int image_type
find_type image_type, 'SDL::Image'
image = new image_type
image.'_new'( 'examples/sdl/parrot_small.png' )
.local pmc sprite
.local int sprite_type
find_type sprite_type, 'SDL::Sprite'
sprite = new sprite_type
.local pmc sprite_args
sprite_args = new PerlHash
sprite_args[ 'surface' ] = image
sprite_args[ 'source_x' ] = 0
sprite_args[ 'source_y' ] = 0
sprite_args[ 'dest_x' ] = 270
sprite_args[ 'dest_y' ] = 212
sprite_args[ 'width'] = 100
sprite_args[ 'height' ] =56
sprite_args[ 'bgcolor' ] = black
sprite.'_new'( sprite_args )
.local pmc parent_class
.local pmc class_type
getclass parent_class, 'SDL::EventHandler'
subclass class_type, parent_class, 'MoveLogo::EventHandler'
.local pmc event_handler
.local int handler_type
find_type handler_type, 'MoveLogo::EventHandler'
event_handler = new handler_type
.local pmc event
.local int event_type
find_type event_type, 'SDL::Event'
event = new event_type
event.'_new'()
.local pmc handler_args
handler_args = new .PerlHash
handler_args[ 'screen' ] = main_screen
handler_args[ 'sprite' ] = sprite
event_handler.draw_screen( main_screen, sprite )
event.wait_event( event_handler, handler_args )
.end
.namespace [ 'MoveLogo::EventHandler' ]
.sub draw_screen method
.param pmc screen
.param pmc sprite
.local pmc prev_rect
.local pmc rect
(prev_rect, rect) = sprite.draw_undraw( screen )
screen.'update_rects'( prev_rect, rect )
.end
.sub key_down_down method
.param pmc event_args
.local pmc screen
.local pmc sprite
screen = event_args[ 'screen' ]
sprite = event_args[ 'sprite' ]
.local int y
y = sprite.'y'()
if y == 480 goto _draw
inc y
sprite.'y'( y )
_draw:
self.'draw_screen'( screen, sprite )
.end
.sub key_down_up method
.param pmc event_args
.local pmc screen
.local pmc sprite
screen = event_args[ 'screen' ]
sprite = event_args[ 'sprite' ]
.local int y
y = sprite.'y'()
if y == 0 goto _draw
dec y
sprite.'y'( y )
_draw:
self.'draw_screen'( screen, sprite )
.end
.sub key_down_left method
.param pmc event_args
.local pmc screen
.local pmc sprite
screen = event_args[ 'screen' ]
sprite = event_args[ 'sprite' ]
.local int x
x = sprite.'x'()
if x == 0 goto _draw
dec x
sprite.'x'( x )
_draw:
self.'draw_screen'( screen, sprite )
.end
.sub key_down_right method
.param pmc event_args
.local pmc screen
.local pmc sprite
screen = event_args[ 'screen' ]
sprite
