Lobbyスクリプト

Lobby.cs

using System.Threading.Tasks;
using System.Threading.Tasks.Dataflow;
using UnityEngine;
using UnityEngine.InputSystem;

public enum CharacterType
{
    Character1,
    Character2,
    Character3,
}

public class PlayerInfo
{
    public InputDevice PairWithDevice { get; private set; } = default;
    public CharacterType SelectedCharacter { get; private set; } = default;

    public PlayerInfo(InputDevice pairWithDevice, CharacterType selectedCharacter)
    {
        PairWithDevice = pairWithDevice;
        SelectedCharacter = selectedCharacter;
    }
}

public class Lobby : MonoBehaviour
{
    public GameObject character1PreviewPrefab, character2PreviewPrefab, character3PreviewPrefab;
    public Transform player1PreviewSpawnPoint, player2PrviewSpawnPoint;
    GameObject player1Preview, player2Preview;

    // どこかで各プレイヤーの情報を配列にしておく
    private PlayerInfo[] playerInfos = new PlayerInfo[2]
    {
        new(null, CharacterType.Character1),
        new(null, CharacterType.Character2),
    };

    void Start()
    {
        UpdatePlayer1Visual();
        UpdatePlayer2Visual();
    }

    /// <summary>
    /// プレイヤー１の「→」ボタンから発火
    /// </summary>
    public void Player1SwitchCharacterNext()
    {
        playerInfos[0] = new(playerInfos[0].PairWithDevice, GetNextCharactertype(playerInfos[0].SelectedCharacter));
        UpdatePlayer1Visual();
    }

    /// <summary>
    /// プレイヤー１の「←」ボタンから発火
    /// </summary>
    public void Player1SwitchCharacterPrevious()
    {
        playerInfos[0] = new(playerInfos[0].PairWithDevice, GetPreviousCharactertype(playerInfos[0].SelectedCharacter));
        UpdatePlayer1Visual();
    }

    /// <summary>
    /// プレイヤー２の「→」ボタンから発火
    /// </summary>
    public void Player2SwitchCharacterNext()
    {
        playerInfos[1] = new(playerInfos[1].PairWithDevice, GetNextCharactertype(playerInfos[1].SelectedCharacter));
        UpdatePlayer2Visual();
    }

    /// <summary>
    /// プレイヤー２の「←」ボタンから発火
    /// </summary>
    public void Player2SwitchCharacterPrevious()
    {
        playerInfos[1] = new(playerInfos[1].PairWithDevice, GetPreviousCharactertype(playerInfos[1].SelectedCharacter));
        UpdatePlayer2Visual();
    }

    public static CharacterType GetNextCharactertype(CharacterType current) => current switch
    {
        CharacterType.Character1 => CharacterType.Character2,
        CharacterType.Character2 => CharacterType.Character3,
        CharacterType.Character3 => CharacterType.Character1,
    };

    public static CharacterType GetPreviousCharactertype(CharacterType current) => current switch
    {
        CharacterType.Character1 => CharacterType.Character3,
        CharacterType.Character2 => CharacterType.Character1,
        CharacterType.Character3 => CharacterType.Character2,
    };

    /// <summary>
    /// ゲームを開始するボタンから発火
    /// </summary>
    public async Task GameStart()
    {
        // シーン遷移し、遷移先のコンポーネントを取得する
        var target = await SceneLoader.Load<InGameHogeScript>("InGameScene");
        // 遷移先のコンポーネントのプロパティにセット
        target.SetInformation(playerInfos);
    }

    private void UpdatePlayer1Visual()
    {
        if (player1Preview)
            Destroy(player1Preview);
        player1Preview = Instantiate(
            GetPreviewPrefabFromCharacterType(playerInfos[0].SelectedCharacter),
            player1PreviewSpawnPoint);
    }

    private void UpdatePlayer2Visual()
    {
        if (player2Preview)
            Destroy(player2Preview);
        player2Preview = Instantiate(
            GetPreviewPrefabFromCharacterType(playerInfos[1].SelectedCharacter),
            player2PreviewSpawnPoint);
    }

    GameObject GetPreviewPrefabFromCharacterType(CharacterType characterType)
    {
        return characterType switch
        {
            CharacterType.Character1 => character1PreviewPrefab,
            CharacterType.Character2 => character2PreviewPrefab,
            CharacterType.Character3 => character3PreviewPrefab,
        };
    }
}