publisher / dispatcher pattern

src/Event/FightStartingEvent.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Event;
+
+use App\Character\Character;
+
+readonly class FightStartingEvent
+{
+    public function __construct(
+        public Character $player,
+        public Character $ai,
+    ) {
+    }
+}

src/Event/OutputFightStartingSubscriber.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Event;
+
+use Symfony\Component\Console\Input\ArrayInput;
+use Symfony\Component\Console\Output\ConsoleOutput;
+use Symfony\Component\Console\Style\SymfonyStyle;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+class OutputFightStartingSubscriber implements EventSubscriberInterface
+{
+    public static function getSubscribedEvents(): array
+    {
+        return [
+            FightStartingEvent::class => 'onFightStart',
+        ];
+    }
+
+    public function onFightStart(FightStartingEvent $event): void
+    {
+        $io = new SymfonyStyle(new ArrayInput([]), new ConsoleOutput());
+        $io->note('Fight is starting against: ' . $event->ai->getNickname());
+    }
+}

src/Game.php

@@ -13,8 +13,10 @@
 use App\Builder\CharacterBuilderFactory;
 use App\Character\Character;
 use App\Character\CharacterType;
+use App\Event\FightStartingEvent;
 use App\Observer\CanObserverFight;
 use Random\RandomException;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 
 class Game
 {
@@ -23,11 +25,14 @@ class Game
 
     public function __construct(
         private CharacterBuilderFactory $characterBuilderFactory,
+        private EventDispatcherInterface $eventDispatcher,
     ) {
     }
 
     public function play(Character $player, Character $enemy): Fight
     {
+        $this->eventDispatcher->dispatch(new FightStartingEvent($player, $enemy));
+
         $player->rest();
 
         $fight = new Fight();