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|
#!/usr/bin/env perl
#
# testspite.pl
#
# adapted from SDL-1.2.x/test/testsprite.c
# Usage: testsprite.pl [-bpp N] [-hw] [-flip] [-fast] [-fullscreen] [numsprites]
use strict;
use Getopt::Long;
use Data::Dumper;
use SDL;
use SDL::App;
use SDL::Event;
use SDL::Surface;
use SDL::Color;
use SDL::Rect;
use vars qw/ $app $app_rect $background $event $sprite $sprite_rect $videoflags /;
## User tweakable settings (via cmd-line)
my %settings = (
'numsprites' => 75,
'screen_width' => 640,
'screen_height' => 480,
'video_bpp' => 8,
'fast' => 0,
'hw' => 0,
'flip' => 1,
'fullscreen' => 0,
'bpp' => undef,
);
## Process commandline arguments
sub get_cmd_args
{
GetOptions("width:i" => \$settings{screen_width},
"height:i" => \$settings{screen_height},
"bpp:i" => \$settings{bpp},
"fast!" => \$settings{fast},
"hw!" => \$settings{hw},
"flip!" => \$settings{flip},
"fullscreen!" => \$settings{fullscreen},
"numsprites=i" => \$settings{numsprites},
);
}
## Initialize application options
sub set_app_args
{
$settings{bpp} ||= 8; # default to 8 bits per pix
$videoflags |= SDL_HWACCEL if $settings{hw};
$videoflags |= SDL_DOUBLEBUF if $settings{flip};
$videoflags |= SDL_FULLSCREEN if $settings{fullscreen};
}
## Setup
sub init_game_context
{
$app = new SDL::App (
-width => $settings{screen_width},
-height=> $settings{screen_height},
-title => "testsprite",
-icon => "data/icon.bmp",
-flags => $videoflags,
);
$app_rect= new SDL::Rect(
-height => $settings{screen_height},
-width => $settings{screen_width},
);
$background = $SDL::Color::black;
$sprite = new SDL::Surface(-name =>"data/icon.bmp");
# Set transparent pixel as the pixel at (0,0)
$sprite->display_format();
$sprite->set_color_key(SDL_SRCCOLORKEY,$sprite->pixel(0,0)); # sets the transparent color to that at (0,0)
$sprite_rect = new SDL::Rect(-x => 0,
-y => 0,
-width => $sprite->width,
-height=> $sprite->height,
);
$event = new SDL::Event();
}
## Prints diagnostics
sub instruments
{
if ( ($app->flags & SDL_HWSURFACE) == SDL_HWSURFACE ) {
printf("Screen is in video memory\n");
} else {
printf("Screen is in system memory\n");
}
if ( ($app->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) {
printf("Screen has double-buffering enabled\n");
}
if ( ($sprite->flags & SDL_HWSURFACE) == SDL_HWSURFACE ) {
printf("Sprite is in video memory\n");
} else {
printf("Sprite is in system memory\n");
}
# Run a sample blit to trigger blit (if posssible)
# acceleration before the check just after
put_sprite(0,0);
if ( ($sprite->flags & SDL_HWACCEL) == SDL_HWACCEL ) {
printf("Sprite blit uses hardware acceleration\n");
}
if ( ($sprite->flags & SDL_RLEACCEL) == SDL_RLEACCEL ) {
printf("Sprite blit uses RLE acceleration\n");
}
}
sub put_sprite
{
my ($x,$y) = @_;
my $dest_rect = new SDL::Rect(-x => $x,
-y => $y,
-width => $sprite->width,
-height => $sprite->height,
);
$sprite->blit($sprite_rect, $app, $dest_rect);
}
sub game_loop
{
my $x=0;
my $y=$settings{screen_height}>>1;
my $i=0;
while (1)
{
# process event queue
$event->pump;
$event->poll;
my $etype=$event->type;
# handle user events
last if ($etype eq SDL_QUIT );
last if (SDL::GetKeyState(SDLK_ESCAPE));
#$app->lock() if $app->lockp();
# page flip
# __draw gfx
$app->fill($app_rect, $background);
foreach (1..$settings{numsprites})
{
put_sprite( $_*8, $y + (sin(($i+$_)*0.2)*($settings{screen_height}/3)));
}
$i+=30;
# __graw gfx end
#$app->unlock();
$app->flip if $settings{flip};
}
}
## Main program loop
get_cmd_args();
set_app_args();
init_game_context();
instruments();
game_loop();
exit(0);
|
