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| #!/usr/bin/env perl
# 言語: perl
# バージョン: 5.36以上
# 依存: Moo（cpanmでインストール）
use v5.36;
package GameEvent {
use Moo;
use v5.36;
has 'type' => (
is => 'ro',
required => 1,
);
has 'message' => (
is => 'ro',
required => 1,
);
has 'timestamp' => (
is => 'ro',
default => sub { time() },
);
has 'data' => (
is => 'ro',
default => sub { {} },
);
}
package GameEventObserver {
use Moo::Role;
use v5.36;
requires 'update';
}
package LogObserver {
use Moo;
use v5.36;
with 'GameEventObserver';
has 'prefix' => (
is => 'ro',
default => '[LOG]',
);
sub update ($self, $event) {
say $self->prefix . " " . $event->message;
}
}
package AchievementObserver {
use Moo;
use v5.36;
with 'GameEventObserver';
has 'unlocked' => (
is => 'ro',
default => sub { [] },
);
has 'defeated_count' => (
is => 'rw',
default => 0,
);
sub update ($self, $event) {
my $type = $event->type;
if ($type eq 'enemy_defeated') {
my $count = $self->defeated_count + 1;
$self->defeated_count($count);
if ($count == 1) {
$self->_unlock('はじめての勝利');
}
if ($count == 10) {
$self->_unlock('ハンター');
}
}
elsif ($type eq 'level_up') {
my $level = $event->data->{level} // 0;
if ($level == 5) {
$self->_unlock('成長');
}
}
}
sub _unlock ($self, $name) {
push @{$self->unlocked}, $name;
say "[ACHIEVEMENT] 実績解除: $name";
}
}
package SoundObserver {
use Moo;
use v5.36;
with 'GameEventObserver';
has 'sound_map' => (
is => 'ro',
default => sub {{
enemy_defeated => 'victory.wav',
item_acquired => 'pickup.wav',
level_up => 'levelup.wav',
}},
);
sub update ($self, $event) {
my $type = $event->type;
my $sound = $self->sound_map->{$type};
if ($sound) {
say "[SOUND] $sound を再生";
}
}
}
package GameEventEmitter {
use Moo;
use v5.36;
has 'observers' => (
is => 'ro',
default => sub { [] },
);
sub attach ($self, $observer) {
push @{$self->observers}, $observer;
}
sub detach ($self, $observer) {
@{$self->observers} = grep { $_ != $observer } @{$self->observers};
}
sub notify ($self, $event) {
for my $observer (@{$self->observers}) {
$observer->update($event);
}
}
}
package main {
use v5.36;
my $emitter = GameEventEmitter->new();
my $log_observer = LogObserver->new();
my $achievement_observer = AchievementObserver->new();
my $sound_observer = SoundObserver->new();
$emitter->attach($log_observer);
$emitter->attach($achievement_observer);
$emitter->attach($sound_observer);
say "=== ダンジョン探索開始 ===";
say "";
my @events = (
GameEvent->new(
type => 'enemy_defeated',
message => 'スライムを倒した！',
),
GameEvent->new(
type => 'item_acquired',
message => '薬草を手に入れた！',
),
GameEvent->new(
type => 'level_up',
message => 'レベルが5になった！',
data => { level => 5 },
),
);
for my $event (@events) {
$emitter->notify($event);
say "";
}
say "=== 解除した実績 ===";
say "- $_" for @{$achievement_observer->unlocked};
}
|
