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|
use strict;
use warnings;
use FFI::Platypus 2.00;
use FFI::CheckLib qw( find_lib_or_die );
my $ffi = FFI::Platypus->new(
api => 2,
lib => [find_lib_or_die lib => 'tcod'],
);
package TCOD::ColorRGB {
use overload
'""' => sub { shift->to_string },
"+" => sub { shift->add(@_) },
bool => sub { 1 },
fallback => 1;
use FFI::Platypus::Record;
record_layout_1(
uint8 => 'r',
uint8 => 'g',
uint8 => 'b',
);
$ffi->type('record(TCOD::ColorRGB)' => 'TCOD_color_t');
$ffi->attach( [ TCOD_color_add => 'add' ] => ['TCOD_color_t','TCOD_color_t'] => 'TCOD_color_t');
sub to_string
{
my($self) = @_;
sprintf "[%02x %02x %02x]",
$self->r,
$self->g,
$self->b;
}
}
$ffi->attach( TCOD_color_RGB => [ 'uint8', 'uint8', 'uint8' ] => 'TCOD_color_t' );
my $red = TCOD_color_RGB(255,0,0);
my $blue = TCOD_color_RGB(0,255,0);
my $purple = $red + $blue;
print "$red\n"; # [ff 00 00]
print "$blue\n"; # [00 00 ff]
print "$purple\n"; # [ff 00 ff]
|
