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┌─────────────────────────────────────────────────┐
│              Prototypeパターンの構造             │
└─────────────────────────────────────────────────┘

                    ┌─────────────┐
                    │  Prototype  │
                    │   (Role)    │
                    │─────────────│
                    │ clone()     │
                    └──────┬──────┘
                           │ requires
            ┌──────────────┼──────────────┐
            │              │              │
   ┌────────▼────────┐  ┌──▼───────┐  ┌───▼──────┐
   │ConcretePrototype│  │ Monster  │  │ Weapon   │
   │     (実装)      │  │ (Slime)  │  │ (Sword)  │
   │─────────────────│  │──────────│  │──────────│
   │ clone() {...}   │  │ clone()  │  │ clone()  │
   └─────────────────┘  └──────────┘  └──────────┘
            ▲
            │ uses
   ┌────────┴────────┐
   │     Client      │
   │  (メインコード)  │
   │─────────────────│
   │ prototype.clone │
   └─────────────────┘

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# ベースオブジェクトを作成
my $base_slime = Monster->new(name => 'スライム', hp => 10, ...);

# clone()で複製
my $red_slime = $base_slime->clone;
$red_slime->color('赤');

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# ファクトリクラスでnew()を呼ぶ
my $factory = SlimeFactory->new;
my $slime = $factory->create_monster;  # 内部でnew()を呼ぶ

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#!/usr/bin/env perl
# 言語: perl
# バージョン: 5.36以上
# 依存: Moo, Storable（Perl標準モジュール）

use v5.36;
use Storable qw(dclone);

# Prototypeロール（clone()を要求）
package Cloneable {
    use Moo::Role;
    requires 'clone';
}

package Weapon {
    use Moo;
    use Storable qw(dclone);
    with 'Cloneable';  # Cloneableロールを適用

    has name  => (is => 'ro', required => 1);
    has power => (is => 'rw', required => 1);

    sub clone ($self) {
        return dclone($self);
    }
}

package Monster {
    use Moo;
    use Storable qw(dclone);
    with 'Cloneable';  # Cloneableロールを適用

    has name    => (is => 'ro', required => 1);
    has hp      => (is => 'rw', required => 1);
    has attack  => (is => 'rw', required => 1);
    has defense => (is => 'rw', required => 1);
    has weapon  => (is => 'rw');

    sub clone ($self) {
        return dclone($self);
    }

    sub show_status ($self) {
        say "【" . $self->name . "】HP:" . $self->hp
            . " 攻撃:" . $self->attack
            . " 防御:" . $self->defense;
    }
}

# 使用例
my $base = Monster->new(name => 'スライム', hp => 10, attack => 3, defense => 2);
my $copy = $base->clone;
$copy->show_status;