MapImageLayer/Mod.cs at main · Cities2Modding/MapImageLayer · GitHub

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using HarmonyLib;
using System.Reflection;
using System.Linq;
using Colossal.Logging;
using Game.Modding;
using Unity.Entities;
using MapImageLayer.Systems;
using Game;
using Game.SceneFlow;
using System.IO;
using UnityEngine;

namespace MapImageLayer
{
    public class Mod : IMod
    {
        public static string AssemblyPath
        {
            get;
            private set;
        }

        public static readonly string MOD_PATH = Path.Combine( Application.persistentDataPath, "Mods", "LegacyFlavour" );

        private const string HARMONY_ID = "cities2modding_mapimagelayer";
        private static ILog _log = LogManager.GetLogger( "Cities2Modding" ).SetShowsErrorsInUI( false );

        public static Harmony _harmony;
        private World _world;

        public void OnLoad( UpdateSystem updateSystem )
        {
            if ( GameManager.instance.modManager.TryGetExecutableAsset( this, out var asset ) )
            {
                AssemblyPath = Path.GetDirectoryName( asset.path.Replace( '/', Path.DirectorySeparatorChar ) );
            }

            _world = updateSystem.World;

            _harmony = new Harmony( HARMONY_ID );
            _harmony.PatchAll( );

            _world.GetOrCreateSystemManaged<ImageOverlaySystem>( );

            _log.Info( @" __  __            _____                            _
 |  \/  |          |_   _|                          | |
 | \  / | __ _ _ __  | |  _ __ ___   __ _  __ _  ___| |     __ _ _   _  ___ _ __
 | |\/| |/ _` | '_ \ | | | '_ ` _ \ / _` |/ _` |/ _ \ |    / _` | | | |/ _ \ '__|
 | |  | | (_| | |_) || |_| | | | | | (_| | (_| |  __/ |___| (_| | |_| |  __/ |
 |_|  |_|\__,_| .__/_____|_| |_| |_|\__,_|\__, |\___|______\__,_|\__, |\___|_|
              | |                          __/ |                  __/ |
              |_|                         |___/                  |___/           " );
        }


        public void OnDispose( )
        {
            SafelyRemove<ImageOverlaySystem>( );
            _harmony.UnpatchAll( HARMONY_ID );
        }

        private void SafelyRemove<T>( )
            where T : GameSystemBase
        {
            var system = _world.GetExistingSystemManaged<T>( );

            if ( system != null )
                _world.DestroySystemManaged( system );
        }
    }
}