Pink/Assets/Scripts/Environment/GameController.cs

using UnityEngine;
using UnityEngine.SceneManagement;

namespace Pink.Environment
{
    /// <summary>
    /// This class exposes the the game model in the inspector, and ticks the
    /// simulation.
    /// </summary> 
    public class GameController : MonoBehaviour
    {
        public static GameController Instance { get; private set; }

        //This model field is public and can be therefore be modified in the 
        //inspector.
        //The reference actually comes from the InstanceRegister, and is shared
        //through the simulation and events. Unity will deserialize over this
        //shared reference when the scene loads, allowing the model to be
        //conveniently configured inside the inspector.
        public EnvironmentModel model = Simulation.GetModel<EnvironmentModel>();

        void OnEnable()
        {
            Instance = this;
        }

        void OnDisable()
        {
            if (Instance == this) Instance = null;
        }

        void Update()
        {
            if (Instance == this) Simulation.Tick();
        }

        void LoadLevel(string levelName)
        {
            Debug.Log($"Loading level {levelName}");
            SceneManager.LoadScene(levelName);
        }
    }
}