RebootKit/Runtime/Engine/Code/Services/Game/GameService.cs

using System.Threading;
using Cysharp.Threading.Tasks;
using RebootKit.Engine.Foundation;
using UnityEngine.Assertions;

namespace RebootKit.Engine.Services.Game {
    public class GameService : IService {
        static readonly Logger s_logger = new(nameof(GameService));

        [Inject] DIContext m_DIContext;
        GameMode m_GameMode;

        GameModeAsset m_GameModeAsset;
        bool m_isRunning;

        public void Dispose() {
            m_isRunning = false;
            m_GameMode.Dispose();
        }

        public async UniTask Start(GameModeAsset asset, CancellationToken cancellationToken) {
            Assert.IsNotNull(asset);

            m_GameMode = asset.Create(m_DIContext);
            await m_GameMode.Start(cancellationToken);

            Run(cancellationToken).Forget();
        }

        async UniTask Run(CancellationToken cancellationToken) {
            if (m_GameMode == null) {
                s_logger.Error("Trying to run game without game mode");
                return;
            }

            m_isRunning = true;
            while (m_isRunning) {
                await UniTask.Yield(PlayerLoopTiming.Update, cancellationToken);
                m_GameMode.Tick();

                if (cancellationToken.IsCancellationRequested) {
                    return;
                }
            }
        }
    }
}