build the backend structure and the fe for the Game

app/Http/Controllers/RoomPlayerController.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Http\Requests\JoinRoomRequest;
+use App\Models\Room;
+
+class RoomPlayerController extends Controller
+{
+    public function join(JoinRoomRequest $request)
+    {
+        $validated = $request->validated();
+        $user = $request->user();
+
+        $room = Room::where('join_code', '=', $validated['join_code'])->firstOrFail();
+
+        $player = $room->players()->create([
+            'user_id' => $user?->id,
+            'name' => $validated['player_name'],
+            'is_moderator' => false,
+            'last_seen_at' => now(),
+        ]);
+
+        $request->session()->put(
+            "room_players.{$room->id}",
+            $player->id,
+        );
+
+        return to_route('room.show', $room);
+
+    }
+}